Exhibit 3.1


                           EIGHTH AMENDED AND RESTATED

                          CERTIFICATE OF INCORPORATION

                                       OF

                               INSULET CORPORATION

         Insulet Corporation, a corporation organized and existing under the
laws of the State of Delaware (the "Corporation"), hereby certifies as follows:

         1.       The name of the Corporation is Insulet Corporation. The
Corporation was originally incorporated under such name. The date of the filing
of its original Certificate of Incorporation with the Secretary of State of the
State of Delaware was July 20, 2000. Amended and Restated Certificates of
Incorporation were filed with the office of the Secretary of State of the State
of Delaware on October 19, 2000, on February 16, 2001 and on June 29, 2001,
respectively. An amendment to the Third Amended and Restated Certificate of
Incorporation was filed with the office of the Secretary of State of the State
of Delaware on December 3, 2001. The Fourth Amended and Restated Certificate of
Incorporation was filed with the office of the Secretary of State of the State
of Delaware on September 10, 2002. The Fifth Amended and Restated Certificate of
Incorporation was filed with the office of the Secretary of State of the State
of Delaware on February 20, 2004. An amendment to the Fifth Amended and Restated
Certificate of Incorporation was filed with the office of the Secretary of State
of the State of Delaware on June 15, 2005. The Sixth Amended and Restated
Certificate of Incorporation was filed with the office of the Secretary of State
of the State of Delaware on February 3, 2006. An amendment to the Sixth Amended
and Restated Certificate of Incorporation was filed with the office of the
Secretary of State of the State of Delaware on December 22, 2006. The Seventh
Amended and Restated Certificate of Incorporation was filed with the office of
the Secretary of State of the State of Delaware on May 10, 2007 (the "Seventh
Amended and Restated Certificate").

         2.       This Eighth Amended and Restated Certificate of Incorporation
(this "Certificate") amends, restates and integrates the provisions of the
Seventh Amended and Restated Certificate, and was duly adopted in accordance
with the provisions of Sections 228, 242 and 245 of the Delaware General
Corporation Law (the "DGCL").

         3.       The text of the Seventh Amended and Restated Certificate is
hereby amended and restated in its entirety to provide as herein set forth in
full.

                                    ARTICLE I

         The name of the Corporation is Insulet Corporation.




                                   ARTICLE II

         The address of the Corporation's registered office in the State of
Delaware is c/o The Corporation Trust Company, 1209 Orange Street in the City of
Wilmington, County of New Castle. The name of its registered agent at such
address is The Corporation Trust Company.


                                   ARTICLE III

         The purpose of the Corporation is to engage in any lawful act or
activity for which corporations may be organized under the DGCL.


                                   ARTICLE IV

                                  CAPITAL STOCK

         The total number of shares of capital stock which the Corporation shall
have authority to issue is one hundred and five million (105,000,000) shares, of
which (i) one hundred million (100,000,000) shares shall be a class designated
as common stock, par value $0.001 per share (the "Common Stock"), and (ii) five
million (5,000,000) shares shall be a class designated as undesignated preferred
stock, par value $0.001 per share (the "Undesignated Preferred Stock").

         The number of authorized shares of the class of Undesignated Preferred
Stock may from time to time be increased or decreased (but not below the number
of shares outstanding) by the affirmative vote of the holders of a majority of
the outstanding shares of Common Stock entitled to vote, without a vote of the
holders of the Undesignated Preferred Stock (except as otherwise provided in any
certificate of designations of any series of Undesignated Preferred Stock).

         The powers, preferences and rights of, and the qualifications,
limitations and restrictions upon, each class or series of stock shall be
determined in accordance with, or as set forth below in, this Article IV.


                                 A. COMMON STOCK

                  Subject to all the rights, powers and preferences of the
Undesignated Preferred Stock and except as provided by law or in this Article IV
(or in any certificate of designations of any series of Undesignated Preferred
Stock):

                           (a)     the holders of the Common Stock shall have
the exclusive right to vote for the election of directors of the Corporation
(the "Directors") and on all other matters requiring stockholder action, each
outstanding share entitling the holder thereof to one vote on each matter
properly submitted to the stockholders of the Corporation for their vote;
provided, however, that, except as otherwise required by law, holders of Common
Stock, as such, shall not be entitled to vote on any amendment to this
Certificate (or on any amendment to a certificate of designations of any series
of Undesignated Preferred Stock) that alters or changes the powers,



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preferences, rights or other terms of one or more outstanding series of
Undesignated Preferred Stock if the holders of such affected series are entitled
to vote, either separately or together with the holders of one or more other
such series, on such amendment pursuant to this Certificate (or pursuant to a
certificate of designations of any series of Undesignated Preferred Stock) or
pursuant to the DGCL;

                           (b)     dividends may be declared and paid or set
apart for payment upon the Common Stock out of any assets or funds of the
Corporation legally available for the payment of dividends, but only when and as
declared by the Board of Directors or any authorized committee thereof; and

                           (c)     upon the voluntary or involuntary
liquidation, dissolution or winding up of the Corporation, the net assets of the
Corporation shall be distributed pro rata to the holders of the Common Stock.

                         B. UNDESIGNATED PREFERRED STOCK

                  The Board of Directors or any authorized committee thereof is
expressly authorized, to the fullest extent permitted by law, to provide for the
issuance of the shares of Undesignated Preferred Stock in one or more series of
such stock, and by filing a certificate pursuant to applicable law of the State
of Delaware, to establish or change from time to time the number of shares of
each such series, and to fix the designations, powers, including voting powers,
full or limited, or no voting powers, preferences and the relative,
participating, optional or other special rights of the shares of each series and
any qualifications, limitations and restrictions thereof.

                                    ARTICLE V

                               STOCKHOLDER ACTION

         1.       Action without Meeting. Except as otherwise provided herein,
any action required or permitted to be taken by the stockholders of the
Corporation at any annual or special meeting of stockholders of the Corporation
must be effected at a duly called annual or special meeting of stockholders and
may not be taken or effected by a written consent of stockholders in lieu
thereof.

         2.       Special Meetings. Except as otherwise required by statute and
subject to the rights, if any, of the holders of any series of Undesignated
Preferred Stock, special meetings of the stockholders of the Corporation may be
called only by the Board of Directors acting pursuant to a resolution approved
by the affirmative vote of a majority of the Directors then in office. Only
those matters set forth in the notice of the special meeting may be considered
or acted upon at a special meeting of stockholders of the Corporation.



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                                   ARTICLE VI

                                    DIRECTORS


         1.       General. The business and affairs of the Corporation shall be
managed by or under the direction of the Board of Directors except as otherwise
provided herein or required by law.

         2.       Election of Directors. Election of Directors need not be by
written ballot unless the By-laws of the Corporation (the "By-laws") shall so
provide.

         3.       Number of Directors; Term of Office. The number of Directors
of the Corporation shall be fixed solely and exclusively by resolution duly
adopted from time to time by the Board of Directors. The Directors, other than
those who may be elected by the holders of any series of Undesignated Preferred
Stock, shall be classified, with respect to the term for which they severally
hold office, into three classes, as nearly equal in number as reasonably
possible. The Directors of the Corporation initially will be assigned to be
Class I Directors, Class II Directors and Class III Directors of the Corporation
in accordance with a resolution or resolutions adopted by the Board of
Directors. The initial Class I Directors shall serve for a term expiring at the
annual meeting of stockholders to be held in 2008, the initial Class II
Directors shall serve for a term expiring at the annual meeting of stockholders
to be held in 2009, and the initial Class III Directors shall serve for a term
expiring at the annual meeting of stockholders to be held in 2010. At each
annual meeting of stockholders, Directors elected to succeed those Directors
whose terms expire shall be elected for a term of office to expire at the third
succeeding annual meeting of stockholders after their election. Notwithstanding
the foregoing, the Directors elected to each class shall hold office until their
successors are duly elected and qualified or until their earlier resignation,
death or removal.

         Notwithstanding the foregoing, whenever, pursuant to the provisions of
Article IV of this Certificate, the holders of any one or more series of
Undesignated Preferred Stock shall have the right, voting separately as a series
or together with holders of other such series, to elect Directors at an annual
or special meeting of stockholders, the election, term of office, filling of
vacancies and other features of such directorships shall be governed by the
terms of this Certificate and any certificate of designations applicable
thereto.

         4.       Vacancies. Subject to the rights, if any, of the holders of
any series of Undesignated Preferred Stock to elect Directors and to fill
vacancies in the Board of Directors relating thereto, any and all vacancies in
the Board of Directors, however occurring, including, without limitation, by
reason of an increase in size of the Board of Directors, or the death,
resignation, disqualification or removal of a Director, shall be filled solely
and exclusively by the affirmative vote of a majority of the remaining Directors
then in office, even if less than a quorum of the Board of Directors, and not by
the stockholders. Any Director appointed in



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accordance with the preceding sentence shall hold office for the remainder of
the full term of the class of Directors in which the new directorship was
created or the vacancy occurred and until such Director's successor shall have
been duly elected and qualified or until his or her earlier resignation, death
or removal. Subject to the rights, if any, of the holders of any series of
Undesignated Preferred Stock to elect Directors, when the number of Directors is
increased or decreased, the Board of Directors shall, subject to Article VI.3
hereof, determine the class or classes to which the increased or decreased
number of Directors shall be apportioned; provided, however, that no decrease in
the number of Directors shall shorten the term of any incumbent Director. In the
event of a vacancy in the Board of Directors, the remaining Directors, except as
otherwise provided by law, shall exercise the powers of the full Board of
Directors until the vacancy is filled.

         5.       Removal. Subject to the rights, if any, of any series of
Undesignated Preferred Stock to elect Directors and to remove any Director whom
the holders of any such stock have the right to elect, any Director (including
persons elected by Directors to fill vacancies in the Board of Directors) may be
removed from office (i) only with cause and (ii) only by the affirmative vote of
the holders of 75% or more of the shares then entitled to vote at an election of
Directors. At least forty-five (45) days prior to any meeting of stockholders at
which it is proposed that any Director be removed from office, written notice of
such proposed removal and the alleged grounds thereof shall be sent to the
Director whose removal will be considered at the meeting.


                                   ARTICLE VII

                             LIMITATION OF LIABILITY

         A Director of the Corporation shall not be personally liable to the
Corporation or its stockholders for monetary damages for breach of fiduciary
duty as a Director, except for liability (a) for any breach of the Director's
duty of loyalty to the Corporation or its stockholders, (b) for acts or
omissions not in good faith or which involve intentional misconduct or a knowing
violation of law, (c) under Section 174 of the DGCL or (d) for any transaction
from which the Director derived an improper personal benefit. If the DGCL is
amended after the effective date of this Certificate to authorize corporate
action further eliminating or limiting the personal liability of Directors, then
the liability of a Director of the Corporation shall be eliminated or limited to
the fullest extent permitted by the DGCL, as so amended.

         Any repeal or modification of this Article VII by either of (i) the
stockholders of the Corporation or (ii) an amendment to the DGCL, shall not
adversely affect any right or protection existing at the time of such repeal or
modification with respect to any acts or omissions occurring before such repeal
or modification of a person serving as a Director at the time of such repeal or
modification.


                                  ARTICLE VIII

                              AMENDMENT OF BY-LAWS




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         1.       Amendment by Directors. Except as otherwise provided by law,
the By-laws of the Corporation may be amended or repealed by the Board of
Directors by the affirmative vote of a majority of the Directors then in office.

         2.       Amendment by Stockholders. The By-laws of the Corporation may
be amended or repealed at any annual meeting of stockholders, or special meeting
of stockholders called for such purpose as provided in the By-laws, by the
affirmative vote of at least 75% of the outstanding shares entitled to vote on
such amendment or repeal, voting together as a single class; provided, however,
that if the Board of Directors recommends that stockholders approve such
amendment or repeal at such meeting of stockholders, such amendment or repeal
shall only require the affirmative vote of the majority of the outstanding
shares entitled to vote on such amendment or repeal, voting together as a single
class.


                                   ARTICLE IX

                    AMENDMENT OF CERTIFICATE OF INCORPORATION

         The Corporation reserves the right to amend or repeal this Certificate
in the manner now or hereafter prescribed by statute and this Certificate, and
all rights conferred upon stockholders herein are granted subject to this
reservation. Whenever any vote of the holders of voting stock is required to
amend or repeal any provision of this Certificate, and in addition to any other
vote of holders of voting stock that is required by this Certificate or by law,
such amendment or repeal shall require the affirmative vote of the majority of
the outstanding shares entitled to vote on such amendment or repeal, and the
affirmative vote of the majority of the outstanding shares of each class
entitled to vote thereon as a class, at a duly constituted meeting of
stockholders called expressly for such purpose; provided, however, that the
affirmative vote of not less than 75% of the outstanding shares entitled to vote
on such amendment or repeal, and the affirmative vote of not less than 75% of
the outstanding shares of each class entitled to vote thereon as a class, shall
be required to amend or repeal any provision of Article V, Article VI, Article
VII, Article VIII or Article IX of this Certificate.

                                  [End of Text]



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         THIS EIGHTH AMENDED AND RESTATED CERTIFICATE OF INCORPORATION is
executed as of this 18th day of May, 2007.


                                           INSULET CORPORATION


                                           By: /s/ Duane DeSisto
                                               -------------------------------
                                               Duane DeSisto
                                               Chief Executive Officer