BOSTON SCIENTIFIC CORPORATION
                                                               Host:  Larry Best
                                                    June 29, 2001/12:30 p.m. CDT
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                          BOSTON SCIENTIFIC CORPORATION

                                  June 29, 2001
                                 12:30 p.m. CDT



Moderator                  Ladies and gentlemen, thank you for standing by.
                           Welcome to the Boston Scientific Corporation
                           conference call. At this time all participants are in
                           a listen-only mode. Later we will conduct a question
                           and answer sessions. Instructions will be given at
                           that time. As a reminder, this conference is being
                           recorded.

                           I would now like to turn the conference over to the
                           Chief Financial Officer of Boston Scientific, Mr.
                           Larry Best. Please go ahead, sir.

L. Best                    Thank you and good afternoon. The purpose of the call
                           today is to address our announcement earlier today of
                           the acquisition or the agreement, definitive
                           agreement that we reached with Cardiac Pathways to
                           acquire Cardiac Pathways. On the call today with me
                           we have Tom Cohen, who is our President of EP
                           Technologies, a division of Boston Scientific; we
                           have Paul Laviolett, who is the Senior Vice President
                           with Boston Scientific




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                           and also President of our Cardiovascular Division and
                           franchise. We're pleased to have Tom Prescott who is
                           the Chief Executive Officer of Cardiac Pathways, who
                           we've worked very closely with over the last several
                           weeks and months to accomplish what we announced
                           today.

                           I will have some brief prepared remarks, I'll turn it
                           over to Tom Cohen to go over strategic rationale.
                           Paul Laviolett will also add his commentary on the
                           strategic direction of our cardiovascular business as
                           it relates to our EP business. Then we'll ask Tom
                           Prescott to talk a little bit about how he sees this
                           combination and the advantages of it.

                           Before I go forward, I'll ask Paul Donovan, our
                           Senior Vice President of Corporate Communications to
                           read the Safe Harbor clause.

P. Donovan                 Thank you, Larry. This conference call contains
                           forward-looking statements within the meaning of the
                           Safe Harbor Provisions of the Private Securities
                           Litigation Reform Act of 1995. Boston Scientific and
                           Cardiac Pathways wish to caution participants that
                           actual results may differ from those discussed in the
                           forward-looking statements and may be adversely
                           effected by, among other things, the inability to
                           obtain or meet conditions opposed for regulatory
                           approvals; the risk that Boston Scientific and



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                                                               Host:  Larry Best
                                                    June 29, 2001/12:30 p.m. CDT
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                           Cardiac Pathways' businesses will not be integrated
                           successfully; risks associated with new product
                           development and commercialization; clinical trials,
                           competitive offerings, each company's overall
                           business strategy and other factors described in each
                           company's filings with the Securities & Exchange
                           Commission.

L. Best                    Thank you, Paul. Let me begin.

                           Boston Scientific and Cardiac Pathways Corporation
                           today announced the signing of a definitive agreement
                           for Boston Scientific to acquire Cardiac Pathways in
                           an all cash transaction for a purchase price of
                           approximately $115 million or $5.27 per share. The
                           transaction, which will be accomplished by a cash
                           tender offer and a follow on merger, is expected to
                           close in the third quarter of 2001. The tender offer
                           for the common shares of Cardiac Pathways is expected
                           to commence in early July and is conditioned upon
                           approval by regulatory authorities and other
                           customary conditions. Management and certain
                           stockholders of Cardiac Pathways, holding the
                           majority of Cardiac Pathways voting securities, have
                           agreed to support the acquisition by tendering their
                           common shares into the tender offer or selling their
                           securities to Boston Scientific. The Cardiac Pathways
                           Board has unanimously voted to recommend the tender
                           offer. Boston




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                           Scientific expects the acquisition to be modestly
                           dilutive to earnings in 2001.

                           This acquisition can be put in the category of
                           another acquisition that is driven by Boston
                           Scientifics' goal of continuing to lead globally the
                           area of interventional medicine, primarily based on
                           catheter-based therapies. We're very proud and
                           excited about the Cardiac Pathways combination into
                           Boston Scientific.

                           Let me give you some perspective on the financial
                           side of this. We're very enthusiastic about the
                           technology platform that the employees of Cardiac
                           Pathways has built over the past several years, both
                           their Chilli Catheter that you'll hear more about and
                           their localization/navigational technology.

                           We think that by combining that business with Boston
                           Scientific and joining the two teams, incremental
                           revenues in 2002 should approach somewhere in the
                           neighborhood of $22 million. In 2003, we hope to see
                           that incremental revenue grow to close to $35 million
                           in incremental revenues. The gross margins on this in
                           the early areas on this incremental business will
                           range in the 50-60% of sales.




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                           We expect in the integration phase in 2001, after
                           closing, that the transaction will have somewhere in
                           the neighborhood of one cent dilution to Boston
                           Scientifics' 2001 EPS. We hope in 2002 that we can
                           neutralize the transaction, but if we do achieve
                           goals of $22 million incremental, it probably will be
                           somewhere between neutral to a penny a share
                           dilutive. And, of course, we're hoping to do better
                           than $22 million, but the $22 million seems like a
                           good estimate at this point.

                           Now, what does that mean to EP Technologies? The
                           combined division of EP Technologies in 2002, our
                           goal is to see sales in excess of $125 million on a
                           combined basis and in 2003 we hope to see that move
                           up handsomely to a sales number of approximately $165
                           million to $170 million, with gross margins in the
                           60% range. The combination of these two companies we
                           think provides a clear leadership position in the
                           therapeutic side of catheter-based ablation.

                           Now, the transaction is a cash transaction. It's $115
                           million in cash. At the time of closing, we expect
                           that Cardiac Pathways in their balance sheet will
                           have somewhere between $15-20 million in cash.
                           There's also $30 million in net operating loss carry
                           forwards that we think are useable. The




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                           net present value of those to Boston Scientific is in
                           the neighborhood of $5 million. So we're looking for
                           net of our cash transaction somewhere in the
                           neighborhood of $15-20 million in cash with $5
                           million net present value of the NOL. That's factored
                           into our valuation model and the decision to move
                           forward.

                           Let me now turn it over to Tom Cohen, President of EP
                           Technologies, who has really led the charge here to
                           embrace this transaction. He'll try to give you his
                           strategic vision for EP today and going forward. Tom?

T. Cohen                   Good morning, good afternoon. We just finished
                           meeting with our folks over at EP Technologies and
                           the organization, it's fair to say, is quite jazzed
                           about the planned acquisition. We're also very
                           excited about the investment that BSC is making in
                           our business and in our future.

                           The strategic rationale, principally, revolves around
                           two key products or technology platforms at Cardiac
                           Pathways. The first one is an ablation technology.
                           The product is called the Chilli. It is a patented,
                           fluid Cooled Ablation System. The value of a fluid
                           Cooled Ablation System is the ability to create
                           larger, deeper lesions, which are particular
                           important in areas such as ventricular tachycardia
                           ablation.




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                           By virtue of their VT approval, Cardiac Pathways now
                           brings a new indication to our portfolio as well as
                           representing a market exclusive today. The Chilli
                           Catheter is the only fluid Cooled Ablation System
                           available in the United States. We expect that that
                           will be the case for some time to come yet. We think
                           that this product has tremendous opportunity for
                           expansion in the future in treating more complex
                           arrhythmias of ventricular tachycardia, of atrial
                           flutter and atrial fibrillation.

                           The second technology is the RPM Realtime Positioning
                           Management System which is a fully integrated
                           recording, mapping system and catheter navigation
                           based on ultrasound technology. The RPM system allows
                           us to navigate catheters in 3D space without the use
                           of fluoroscopy with pinpoint accuracy. The RPM
                           technology is in the initial stages of introduction
                           into the marketplace. Clinicians are quite excited
                           about this. We at EP Technologies have been working
                           toward the integration of a navigational localization
                           technology into our market leader Blazer product for
                           some time, but this really accelerates our time to
                           market significantly as the RPM System is current
                           available and it is on the Chilli Catheter as well.




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                           So those are the two key rationale for moving forward
                           with this. So, really in quick summary fashion, we
                           believe the combination of the two organizations will
                           greatly accelerate our sales and profit picture. They
                           are an exciting new technologies to the clinicians
                           out there. They are aimed at complex arrhythmias,
                           which is really the fastest growing segment of the EP
                           Ablation business today and into the foreseeable
                           future. The combined R&D organizations, as Cardiac
                           Pathways brings in new core capabilities to us, is
                           very complementary. It strengthens our leadership
                           position in the therapeutic market. It provides us,
                           we feel, technological leadership in the two very
                           important areas of large lesion generation as well as
                           3D navigation/localization. And as you look at the
                           combined intellectual property portfolio, it's most
                           impressive at over 300 issued patents.

P. Laviolett               Thanks, Tom. I just want to spend another minute
                           commenting on the broader cardiovascular perspective
                           and what role electrophysiology plays now for Boston
                           Scientific. As you're well aware, we provide products
                           in interventional cardiology, peripheral vascular
                           intervention, interventional neuroradiology and
                           catheter-based electrophysiology. And within that
                           group, electrophysiology is today our fastest growing
                           segment. It maintains a growth rate today in excess
                           of 20% and we certainly anticipate



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                           this combination will add an acceleration to that
                           growth over time, primarily because of the increased
                           reach we'll have in the faster growing segments of
                           catheter-based electrophysiology, the combination of
                           indications that the two companies provide, and the
                           overall acceleration to procedural growth that these
                           technologies ultimately enable.

                           I think this is also a clear statement in our belief
                           in catheter-based interventions for Rhythm
                           Management. We see an increased logic in the pairing
                           of interventional cardiology and electrophysiology as
                           catheter-based therapies become more and more
                           accepted and more and more definitive. That is
                           enabled significantly by the technology available in
                           sophisticated navigation and definitive therapies as
                           provided by ablation procedures from Cardiac Pathways
                           and EPT Technologies.

                           Tom has alluded to some of the synergies and
                           technology leverage available. Clearly, the sales and
                           marketing reach of Boston Scientific's Cardiovascular
                           organization will stimulate growth. We have a
                           combined presence now in the United States that's
                           impressive. But perhaps, more importantly, the
                           international distribution reach made available
                           through these technologies through Boston Scientific
                           Worldwide will clearly be of benefit. We've got now
                           increased combinations in installed capital




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                           equipment base, sales force and clinical specialist
                           capabilities, development capabilities and clearly
                           adding navigation qualities to a large catheter
                           business and perhaps most importantly, a great set of
                           people from Cardiac Pathways joining a great set of
                           people at EPT. So we feel there's a great list of
                           operating synergies, technology, leverage, fueled in
                           part by the inherent growth in EP, the incremental
                           segment growth that we're focused in, and the
                           broadest combination of interventional cardiology and
                           catheter-based electrophysiology available in the
                           industry.

                           Let me turn it over to Tom.

T. Prescott                Thanks, Paul. I guess if you just listened to that,
                           you've heard three different people describe what
                           sounds like a very complementary, strategic fit; one
                           where we're connecting outstanding technologies,
                           especially that we've been able to accelerate over
                           the last couple of years with a refocus on
                           commercializing these technologies that had long been
                           inside the walls of Cardiac Pathway; having the
                           opportunity for this team to connect those
                           technologies with the tremendous resources at Boston
                           Scientific was an overwhelming factor in one of our
                           desires to go forward and certainly played heavily in
                           Boston Scientific's decisions about what this was
                           worth to them.




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                           We're very excited about it. We've looked at them as
                           the team to beat in ablation. They've had the best
                           products, the best support, the best field team out
                           there. And when we've thought about who we had to go
                           head to head with, they were right up there. So, I
                           think there's virtually no product overlaps. This
                           provides an opportunity to accelerate Chilli growth
                           and it provides an opportunity to dramatically
                           accelerate the adoption of RPM.

                           The second thing that seems really compelling here is
                           there's real excitement here with our employees. And
                           many times with acquisitions, there seems to be a
                           winner and a loser. This is clearly a case where we
                           have a company in Boston Scientific that has a strong
                           commitment to the Silicon Valley and to the San
                           Francisco Bay area, both in terms of yielding
                           innovation and new products and new technologies as
                           well as substantial manufacturing network. Many of
                           our employees have either spent time at either Target
                           facilities or at EPT, so Boston Scientific is looked
                           at as an employer of choice. So whether this is a
                           person in operations that is a skilled assembler,
                           whether this is a software engineer, this is clearly
                           not an example where people need to be immediately
                           worrying about their jobs. This provides great
                           opportunities for our employees to grow. And as the



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                           plans play out here and this thing gets finished and
                           the integration gets underway, I believe there's
                           going to be great opportunities for employees and
                           great opportunities for technologies to be
                           accelerated. And at the end of that day what that
                           really yields is better tools for our physicians and
                           better treatments for our ultimate customers, the
                           patients.

                           I guess that takes me to the last thought and that is
                           that Cardiac Pathways has been around since '91 and
                           it's had a very technology-centric focus. The work
                           we've done over the last couple of years to get the
                           company really headed towards commercialization of
                           some of this great technology. The things that we
                           worked so hard at as a small company are the things
                           that Boston Scientific does very, very well. And so I
                           think the overwhelming opportunity here is to connect
                           this great technology with these resources. And in
                           most cases, both in terms of the Chilli platform as
                           well as RPM and some of the things that the market
                           hasn't seen, the sky's the limit, I think, given the
                           commitment, the overall strategic plan for Boston
                           Scientific and the desire to provide great products
                           for other customers, the interventional cardiologists
                           and EP physicians. So I really think that they're
                           just starting to scratch the surface and we're very,
                           very excited at this end to become part of the Boston
                           Scientific family.




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L. Best                    Thank you, Tom. Thank you, Tom and thank you, Paul.
                           Let me turn it over for questions at this point.

Moderator                  Our first question comes from Tim Lee with Merrill
                           Lynch.

T. Lee                     Just a couple of questions. In terms of the revenue
                           projections, can you kind of give us a sense of the
                           mix between the Chilli and the RPM on that front?
                           Second, on the Chilli, even though it's indicated for
                           VT's, it's my understanding that there's quite a bit
                           of off label flutter use. Can you kind of give us a
                           sense of how large the a-flutter market could
                           potentially be?

L. Best                    Obviously we're not going to address off-label use to
                           any great degree, but, Tom, do you want to address
                           that questions first and I'll follow up?

T. Cohen                   Tim, in terms of the mix between RPM and Chilli
                           sales, you can't really think of them as RPM being
                           the instrumentation side and Chilli being the
                           catheter side, there is already a convergence of
                           those technologies. So a Chilli catheter that has the
                           ultrasound transducers placed on them is basically
                           considered a Chilli RPM catheter. So our plan really
                           here is to drive the catheter sales. As you well
                           know, selling instrumentation capital equipment is
                           not the easiest thing in the US market. There are a
                           number




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                           of ways that you can approach that. But the primary
                           focus here will be how can we get RPM installs to
                           help drive the catheter sales. I might ask Tom to
                           elaborate on that a little bit since they've been the
                           architect of that strategy, but specifically we're
                           looking at transitioning from straight Chilli non-RPM
                           sales to Chilli with the RPM navigation capability on
                           it. But the predominant sales will be coming from
                           catheter sales and not from instrumentation sales.

T. Prescott                It's a great set up, Tom. Tim, the specific pattern
                           we're seeing, first of all, almost all of our revenue
                           today is catheters, is disposal streams of catheters.
                           We have very little equipment revenue in our base.
                           What Tom just described is starting to happen in
                           higher volume accounts. And in fact, many times when
                           these doctors get into these cases, they get into a
                           case, it becomes difficult, they start escalating the
                           technology they're using to address that case and
                           they start pulling multiple catheters off the shelf
                           and they're per case cost goes up. And so what we're
                           starting to see is, while there's even a question
                           about a case being more complex or difficult, we have
                           some accounts that are literally putting in a Chilli
                           RPM to start with as the primary ablation tool in the
                           even they decide they need to start to use RPM in the
                           case. ...in the case, the only thing they have to do,
                           the only incremental cost is the less expensive
                           diagnostic catheters




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                           equipped with the RPM technology they then slip in
                           and then they set up the RPM system. So the idea for
                           them, and I think as I've understood the plan, they
                           want to make it as easy as possible for the clinician
                           to scale the level of treatment to the case. I think
                           as ultimately the technology platforms get merged and
                           this technology is available with their tools, the
                           Blazers, the other diagnostic tools, that just
                           becomes easier and easier for the clinician to make
                           happen.

T. Lee                     As a quick follow up. The one on the flutter side,
                           can we anticipate a clinical trial for a-flutter
                           indication? And second, on the RPM front, what's your
                           current install base?

L. Best                    I'll let Tom answer the install base. Let me get back
                           to you here, Tim, on the size of the a-flutter market
                           as we have sized it up on a worldwide basis right
                           now. We estimate that approximately 20% of all the
                           ablations done on a worldwide basis are for atrial
                           flutter and that's growing at about 25% per annum. So
                           it's actually the fastest growing segment of the
                           total ablation market.

                           As far as the off-label use, it's not appropriate, I
                           addressed that; however, we will be looking at plans
                           for whether or not it would make sense for us




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                           to go forward with Chilli in an atrial flutter
                           clinical trial as we currently have a system in
                           clinical trial for atrial flutter as well. So we are
                           hopeful of receiving an indication for atrial
                           flutter. So I'm not trying to dodge your question, we
                           haven't spent a lot of time thinking about that at
                           this stage.

T. Cohen                   The other thing to note is that Tom Prescott and the
                           Cardiac Pathways team achieved just under $7 million
                           in sales in their fiscal 2000 operating year and they
                           most likely will end this fiscal year with over $13
                           million in sales, so almost a doubling of sales in
                           the last 12 months by Tom and his team.

                           We think by just putting this momentum into EPT and a
                           broader sales and marketing force that it certainly
                           is realistic to think we could move $13 million base
                           up $9 million to around $22 million in the next 12
                           months. We'd like to think that's a conservative
                           goal, but there's much to be done here in integrating
                           the two platforms and the two teams.

Moderator                  Our next question is from Mike Weinstein with JP
                           Morgan.




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M. Weinstein               Help us out. I guess it wasn't clear from our
                           standpoint on how there's not a fair amount of
                           overlap on the RF catheter side, given the rather
                           parallel tracks for pursuing AF and flutter over the
                           last couple of years. Maybe you can walk us through
                           that better.

L. Best                    Let me try to tee up that first. First, the majority
                           of Boston Scientific EPT business today is focused on
                           therapeutic as opposed to diagnostics. In the
                           therapeutic market our principle focus has been the
                           SVT market. Second focus has been atrial fibrillation
                           and most of our dollars and cents have been put into
                           the a-fib market.

                           Cardiac Pathways has put a lot of their money and
                           effort into, first, the treatment of VT. Their
                           approval is a VT approval and a different segment
                           than a-fib or a-flutter. So there's multiple growth
                           markets here. Cardiac Pathways first went for an
                           approval on the VT market and Boston Scientific has
                           gone to SVT and then into a-fib. So it really is not
                           much overlap, but far more complementary technology
                           in terms of the platform.

M. Weinstein               I thought, as I understood it, most of the research
                           efforts, and maybe I'm out of date here, at both
                           sides in the last 2-3 years have been on the AF side
                           of the business. Maybe you can just clarify whether
                           work is as well




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                           on pulmonary vein ablation and the efforts of both
                           companies on that front.

L. Best                    Let me clarify again. Cardiac Pathways does not have
                           a clinical trial today that I'm aware of on
                           a-flutter. We have a clinical trial on a-flutter. So
                           the clinical paths are complementary, not
                           overlapping.

                           Now on the pulmonary question, Tom or Tom?

T. Cohen                   On the pulmonary focal a-ablation, we are moving
                           forward with vigor on our development program. We
                           believe that we have a good design, it's a different
                           design, I'm not at liberty to discuss it, and we are
                           hopeful of filing our IDE in the fourth quarter of
                           this year to become a feasibility trial for pulmonary
                           vein ablation for focal AF. So there is no collision
                           there in terms of the development efforts, in terms
                           of technology conflicts with Cardiac Pathways. It's
                           very clean in that respect.

T. Prescott                Maybe just to amplify that, the company went through
                           a huge effort for a very long time with trying to
                           obtain a very, very difficult label to be able to use
                           on the left side and got VT. Certainly, there has
                           been off-label use of the product. It's not something
                           the company's ever promoted. There




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                           has been a number of publications on use of Chilli
                           for flutter and other things.

                           The way we look at it is we, with RPM and Chilli, we
                           have created a set of tools that are useful in a
                           broad number of places. And as a small company, we
                           had to pick our spots. We certainly weren't going to
                           bite off another clinical and I think the opportunity
                           exists for Boston Scientific to understand the best
                           ways to deploy the collective set of technologies,
                           including their franchise, their product line of R&D
                           and clinicals, and these new tools as well as things
                           that we have in our pipeline that others don't know
                           about. So that's one of the great opportunities this
                           combined team's going to have to work through that we
                           hope can bring the right set of tools out with the
                           right kind of label indications to help these docs.

Moderator                  We go to the line of Paul Glazer with Glazer Capital
                           Management.

P. Glazer                  I don't know if you went over this previously, but
                           can you talk about the genesis of the transaction?
                           How did the two companies find each other?

L. Best                    The device world is very small. Boston Scientific has
                           a practice in the markets we serve, which are six
                           major franchise with leadership positions,



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                           of frankly following the market day in and day out
                           and everyone who's emerging in it. Our discussions
                           with Cardiac Pathways management goes back many, many
                           years. We've followed Cardiac Pathway's progress I
                           would say over the last three to five years and have
                           known a lot of the management at Cardiac Pathways.
                           So, our discussions and our dialogue have been
                           long-term. It got more serious in the last two or
                           three or four months as, frankly, we saw the
                           physicians, the electrophysiologists start to be very
                           enamored with the liquid cooled ablation technology,
                           especially for the advanced arrhythmias. We actually
                           were struck by the growing recognition that this is
                           going to be a leadership platform down the road. So
                           it complemented our base so well and our goal is in
                           every market we're in our goal is always the same
                           goal, and that is to be number one globally. The
                           advantage of their technology with Boston Scientific
                           is we have a very fast growing EP business globally,
                           not just in the US. Our growth in Japan, Europe and
                           intercontinental countries is quite impressive. So we
                           can accelerate this technology to market, we can
                           accelerate this technology and the evolution of it
                           with basically deeper resources in the R&D area, and
                           so that's what we hope to do. But the discussions
                           have been over a long period of time.

Moderator                  We now go to the line of Kim Nelson with US Bancorp
                           Piper Jaffray.




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K. Nelson                  Question for Larry. Larry, could you be a little bit
                           more definitive on the 2002 dilution impact? You said
                           $22 million may or may not be dilutive.

L. Best                    On a $22 million incremental base, based on the
                           transaction, we haven't allocated the purchase price,
                           that's frankly one of the two variables. One, we hope
                           we can do better than the $22 million. As I said,
                           they're closing out their fiscal year of June as of
                           today, with around $13 million in revenue. Putting
                           that platform and that portfolio into a larger force,
                           it's not unrealistic to add say $9 million. So we're
                           hoping to do better than $22 million, but on a $22
                           million goal, and just guestimating how the purchase
                           price would be allocated, it shows just about a one
                           cent dilution.

K. Nelson                  What level would it have to reach to be definitively
                           neutral?

L. Best                    Two things. We have to take a harder look at their
                           research and development portfolio. There probably
                           will be a significant R&D assessment and there may be
                           a write-off there which then affects obviously your
                           accounting going forward. We haven't got that deep
                           into the R&D portfolio in terms of assessing and
                           valuing it. So that's a question mark.



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                           But to make it potentially neutral, we probably would
                           have to do closer to $30 million.

K. Nelson                  Then a question for Tom. Can you tell me what the
                           cost is of the capital you have to use both for the
                           Chilli and the RPM System and combined? What does it
                           cost you to place that equipment in an account?

T. Prescott                I'd rather not talk about our cost.

K. Nelson                  Well, price or hardware. You obviously don't sell it
                           outright.

T. Prescott                We kind of capture that in terms of the net growth
                           margins that we wind up reporting, but the practical
                           matter is, we do sell some of these systems. I think
                           there was a question earlier by Tim Lee that I'm not
                           sure I ever got to, I apologize, we have around 50
                           RPM Systems installed worldwide and about 30 of those
                           are in the US. That's consistent with the forecast
                           and guidance we've given before.

                           So, where those are placed, they are placed in high
                           volume accounts where there's a minimum up charge on
                           a catheter placement. The volume and



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                           the up charge is more than sufficient enough to
                           return the capital nicely to the business. For just a
                           Chilli, the dynamic in the EP market for many years
                           has been the placement of generators. I think working
                           with Boston Scientific there are some opportunities
                           to dramatically accelerate this business without
                           necessarily having to accelerate the number of
                           generators you have to put out there to consumer
                           catheters, which makes it more productive for the
                           hospitals, it makes it more productive for the firm.
                           So I'm not going to answer your question as directly
                           as you'd probably like, Kim, but I would probably say
                           our costs on the hardware systems for RPM are very
                           consistent with other firms of our size and other
                           equipment in the same kind of level of complexity.

K. Nelson                  You said 50 RPM accounts have been installed. How
                           many Chilli's?

T. Prescott                We've got 130-140 Chilli accounts active in the US
                           and a number more outside the US.

K. Nelson                  Great. Thanks a lot.

Moderator                  Our next question comes from the line of Kurt Kruger
                           with Banc of America.



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K. Kruger                  Hi, guys. Gee, Larry, you've got the cutting balloon,
                           you've got the new $9 million for this. If you don't
                           watch out, you're going to become a growth company.

L. Best                    Well, we're actually concerned about that.

K. Kruger                  I had a question about Cardiac Pathways help in your
                           principle market I guess for EP, which is AV and RT
                           and WPW, does the new company bring any technology to
                           bear on those indications?

T. Cohen                   The answer is yes, and I think it does a number of
                           things. Although there is a not an SVT indication for
                           the Chilli product, there's a VT indication, the
                           technology is very, very intriguing to the
                           physicians. It gives us an opportunity as we look
                           into the future and anticipate that the US ablation
                           market will in fact segment. It will segment with
                           temperature control ablation and fluid cooled
                           ablation. The preferred embodiment of that fluid
                           cooled ablation is really the Chilli catheter as
                           opposed to irrigated or showerhead designs.



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                           But I think what it does for us, it gives our
                           combined sales organization a whole new level of
                           excitement and reason to speak with the clinician. So
                           it does definitely have some halo pull through effect
                           on our products. It's our expectation that the
                           Blazer, until we can get navigation capability and
                           other some other things, will still be the principle
                           workhorse on our ablation line. We'll continue to
                           build the Chilli position in the marketplace as a
                           premium, unique patented technology.

K. Kruger                  Does reusability still plague the industry at all or
                           does the Chilli not suffer from reusability at all?

T. Cohen                   The reusability is still a bit of an issue in the
                           marketplace; however, there have been strides me from
                           the standpoint that the FDA has issued guidelines. As
                           of now, we're expecting by the middle of August to
                           determine whether or not any of the reprocessors have
                           met the requirements for an original PMA, the
                           ability, therefore, to reprocess therapeutic
                           catheters. I can't really predict what the outcome
                           is, but in the meantime, a lot of accounts in the
                           country have in fact converted from reuse to single
                           use. There's still accounts that are reusing as the
                           reprocessors that have filed PMA's are able, in this
                           grace period, to continue to reprocess ablation and
                           diagnostic catheters.



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L. Best                    Tom, is it fair to say that the Chilli catheter
                           technology is a bit harder to reuse because of
                           the....?

T. Prescott                Yes, what we understand, reuse has been driven by a
                           number of things. Number one, we think the economic
                           hardships in the hospitals themselves, and these are
                           complex products that cost them a lot of money. What
                           we've found is that, number one, a Chilli does not
                           typically get reused. It has multiple lumens in a
                           recirculating path that is saline and it typically
                           does not get reused. And secondly, given the general
                           effectiveness of the product, when they use it to
                           pull it out for a difficult case and they get that
                           case resolved quickly and easily, there's a whole lot
                           less pressure to try to yield more uses out of that
                           product. So I think it's the combination of both the
                           high effectiveness, the clinical effectiveness they
                           see on the front line as well as the fact that if
                           somebody looks at that product and says, "I don't
                           want to try to resterilize this" it's the combination
                           of those two effects.

Moderator                  Our next question is from Glenn Recin with Morgan
                           Stanley.

G. Recin                   Just a couple of clarifications. When you talk about
                           it might be dilutive in 2002, that's assuming
                           goodwill...expense on the income statement?



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L. Best                    Yes.

G. Recin                   Can you comment on the size of the combined EP sales
                           force right now with the addition?

T. Cohen                   Well, we certainly have to go through an integration,
                           a careful and thoughtful integration process of the
                           two field sales organizations. If you were to simply
                           take the additive approach right now, in the United
                           States Cardiac Pathways has approximately 21 people
                           in their field sales organization, which is comprised
                           of about 15 clinical specialists and 5 sales reps and
                           a couple of sales managers. The EPT organization is
                           structured a little differently. We have about 25
                           sales reps, 5 sales managers and we have about 5
                           technical/clinical support individuals.

L. Best                    We do this in every integration, we plot out what the
                           after the acquisition combined framework for sales
                           and marketing should look like and then we basically
                           have everyone interviewed for those positions and
                           combine and integrate the sales and marketing forces
                           with the best and brightest going forward. So there's
                           integration in every combination, but the good news



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                           here is we think there's enough growth opportunity
                           that we'll probably maintain more people than usual
                           in terms of an integration.

T. Prescott                I'm going to add on just a little bit here just to
                           clarify for everybody, the Boston team as well. Until
                           this closes, we're two separate companies and that's
                           especially essential out in the field operations side
                           at the customer interface. There's really nothing
                           going on out there that any transition planning is
                           going to be done with other folks and we're asking
                           our team to go get off to a great first quarter start
                           here, starting Monday, and I think they've got some
                           opportunity to join a terrific team and to make this
                           one-and-one is two, especially out at the customer
                           point.

L. Best                    That's right. Oh, the other thing that is important
                           to note here that we're excited about is the
                           combination of the intellectual property. Cardiac
                           Pathways has been in business for ten years, has
                           planted a lot of intellectual property in the EP
                           area. Likewise, EP technology has been around for
                           almost the same amount of time. Likewise, they have
                           planted a lot of EP/IP. So combined, we're well over
                           300 patents issued and a lot more disclosures. So
                           it's a very rich portfolio for catheter base
                           ablation.

Moderator                  We now go to Andrew Jay with First Union Securities.




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A. Jay                     I'd like to follow up on Kurt Kruger's question a
                           little bit on the reprocessing. That is, first of
                           all, for Larry, are you seeing less reprocessing of
                           catheters given the regulations on device
                           reprocessing? And also, are you aware of anyone who's
                           attempting to file a PMA for reprocessing of the
                           Chilli catheter?

L. Best                    What we're feeling in the numbers in EPT in the US is
                           more and more accounts going to single use, which is
                           great news for our EP business. We think it's
                           absolutely the right direction based on the safety
                           issues.

                           You're probably aware that the FDA has looked closely
                           at this whole reprocessing issue, they've required
                           reprocessors to go through normal PMA route. There
                           has been at least one, maybe there's a number that
                           have gone that route. And what Tom Cohen was
                           referring to is a process at the FDA to now look at
                           these submissions and determine whether they require
                           clinical data or not. It's my understanding that
                           submissions that have been made to date do not have
                           any clinical data supporting their PMA and the
                           question is, will the FDA require them to submit
                           clinical data like everyone else who has achieved a
                           PMA. So, it's a question mark, we don't know which
                           way the FDA is going to go, but despite the




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                           FDA's effort, I think more and more labs are
                           understanding the importance of single use.

P. Laviolett               Larry, just one additional comment. Clearly,
                           reprocessing has been a threat. It's been perhaps
                           more commonly practiced within EP than other markets.
                           We're clearly today not aware of any reprocessor that
                           has made a filing as it relates to Chilli. I think
                           this is an opportunity where the combination of the
                           companies will create additional prospects. Boston
                           Scientific has been a very strong player in trying to
                           drive legislative change, FDA regulatory change.
                           We've been an active participant in defense of all of
                           our businesses against the reprocessing of single use
                           devices and we're a strong player in both the
                           adv...process there as well as the Association of
                           Disposable Device Manufacturers. So to the extent
                           that we can continue to apply pressure broadly as
                           well as specifically within EP, we're going to and
                           we've seen significant growth in our businesses in
                           gastroenterology and electrophysiology as a result of
                           single use conversion. We don't know the outcome from
                           FDA that will be expected later this summer, but
                           we've influenced the business fairly positively so
                           far, we expect that to continue.



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A. Jay                     One follow up question, if I may. Do you see
                           applications for this technology in other businesses,
                           the cooled ablation? Could you see using it elsewhere
                           in the body in your interventional businesses?

P. Laviolett               That's a question that I will say that as of this
                           morning where obviously this announcement is a
                           surprise within Boston Scientific divisions as well
                           as in the marketplace, but as of this morning there
                           already have been conversations between divisions
                           about the potential application of the cooled RF
                           technology. So we don't have any explicit plans yet,
                           but I will tell you that our normal approach within
                           Boston Scientific is to aggressively leverage
                           technologies. We do have a number of other businesses
                           that use radio frequency energy to create
                           ablation-like results in solid tissue. So we will
                           clearly assess this, we'll orchestrate it centrally
                           within our corporate technology group and we will
                           apply it wherever it has potential.

L. Best                    Let me add to Paul's comments. If you take a look at
                           the ultrasound base navigation system and you look at
                           the opportunity to leverage that technology across
                           other divisions, other markets, I think there is
                           ...(break in audio) ... to incorporate that
                           technology into other divisions and treatments.



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P. Laviolett               Let me add one comment that one party who asked a
                           question brought up. It's important to note that this
                           acquisition is driven more by the growth
                           opportunities and not by synergies. This is really
                           not an economic synergy story, it's really our view
                           of a great growth opportunity by combining the two
                           companies. Whereas some of our other combinations
                           from time to time are driven, at least substantively,
                           by economic synergies. This one is not driven by
                           that.

Moderator                  The next question is from Keay Nakae from Webb Bush
                           and Morgan Securities.

K. Nakae                   Just following along that last question, could we
                           expect to see a linear ablation device that utilizes
                           the Chilli liquid cooled technology?

L. Best                    The answer is, I think that is quite possible,
                           although our primary focus right now from a
                           development standpoint is really looking at
                           developing a solution for parenchymal atrial fib
                           which originates primarily out of the pulmonary veins
                           in the left atrium. So a lot of our designs are
                           related to that. But certainly, there are second and
                           third generation possibilities incorporating the
                           Chilli patented technology into those catheters. And


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                           then secondarily, we would be also looking at perhaps
                           redirecting our linear program to also incorporate
                           the fluid cooled technology. So the answer is yes and
                           yes.

                           Let's take two more questions and then we'll end the
                           conference call.

Moderator                  There are no further questions.

L. Best                    It sounds like there's no further questions, so we'd
                           like to thank everyone for their attention today and
                           appreciate you calling in. Good afternoon.

Moderator                  Ladies and gentlemen, this conference will be
                           available for replay after 5:00 p.m. EDT until
                           Friday, July 6th at midnight. You may access the
                           replay service at any time by dialing 1-800-475-6701
                           and entering the access code 593662.

                           That does conclude your conference for today. Thank
                           you for your participation. You may now disconnect.