1 EXHIBIT 21 Boston Scientific Corporation and Subsidiaries Dated March 9, 2001 NAME OF COMPANY JURISDICTION OR INCORPORATION - --------------- ----------------------------- AMS Medinvent S.A. Switzerland BSC FSC, Inc. Barbados BSC Finance Corporation Indiana BSC Finance Trust Massachusetts BSC International Corporation Massachusetts BSC International Holding Limited Ireland BSC International Medical Trading (Shanghai) Co., Ltd. People's Republic of China BSC Medical (Shanghai) Consulting Co. Ltd. People's Republic of China BSC Securities Corporation Massachusetts Boston Scientific (Malaysia) Sdn. Bhd. Malaysia Boston Scientific (South Africa) (Proprietary) Limited South Africa Boston Scientific (Thailand) Ltd. Thailand Boston Scientific (Zurich) GmbH Switzerland Boston Scientific AG Switzerland Boston Scientific Argentina S.A. Argentina Boston Scientific Asia Pacific Pte. Ltd. Singapore Boston Scientific B.V. The Netherlands Boston Scientific Benelux B.V. The Netherlands Boston Scientific Benelux SA Belgium Boston Scientific Ceska Repulika, s.r.o. Czech Republic Boston Scientific Columbia Limitada Columbia Boston Scientific Cork Limited Ireland Boston Scientific Corporation Northwest Technology Washington Center, Inc. Boston Scientific Eastern Europe B.V. The Netherlands Boston Scientific Europe S.P.R.L. Belgium Boston Scientific FSC Corporation Barbados Boston Scientific Far East B.V. The Netherlands Boston Scientific Ges.m.b.H. Austria Boston Scientific Holland B.V. The Netherlands Boston Scientific Hong Kong Limited Hong Kong Boston Scientific Hungary Trading Limited Liability Hungary Company Boston Scientific Iberica, S.A. Spain Boston Scientific International B.V. The Netherlands Boston Scientific International Corporation Virgin Islands Boston Scientific International Distribution Limited Ireland Boston Scientific International Holding B.V. The Netherlands Boston Scientific International S.A. France Boston Scientific Ireland Limited Ireland Boston Scientific Israel Limited Israel Boston Scientific Japan K.K. Japan Boston Scientific Korea Co., Ltd. Korea Boston Scientific Latin America B.V. The Netherlands Boston Scientific Latin America B.V. (Chile) Limitada Chile Boston Scientific Limited England Boston Scientific Limited Ireland Boston Scientific Ltd. Canada Boston Scientific Medizintechnik GmbH Germany Boston Scientific New Zealand Limited New Zealand Boston Scientific Nordic AB Sweden Boston Scientific Puerto Rico, Inc. Puerto Rico Boston Scientific Philippines, Inc. Philippines Boston Scientific Polska Sp. z.o.o. Poland Boston Scientific Pty. Ltd. Australia 2 Boston Scientific S.p.a. Italy Boston Scientific S.a.r.l. Luxembourg Boston Scientific Scimed, Inc. Minnesota Boston Scientific Switzerland S.a.r.l. Switzerland Boston Scientific TIP Gerecleri Limited Sirketi Turkey Boston Scientific Uruguay S.A. Uruguay Boston Scientific de Mexico, S.A. de C.V. Mexico Boston Scientific de Venezuela Venezuela Boston Scientific de Brasil Brazil Boston Scientific, S.A. France Catheter Innovations, Inc. Delaware Corvita Corporation Florida Corvita Europe S.A. Belgium Embolic Protection, Inc. Delaware EP Technologies, Inc. California Forwich Limited Ireland Heart Technology FSC, Inc. Barbados Interventional Therapeutics Corporation California Interventional Therapeutics International California Laboratories Corvita S.A.R.L. France MM Foreign Sales Corporation Virgin Islands Meadox (U.K.) Limited England Meadox Medicals, Inc. New Jersey NAMIC International Inc. Virgin Islands Neopharm (2001) Less Invasive Medical Instruments Ltd. Israel Nilo Holding SA Switzerland Norse Ventures B.V. The Netherlands SCHNEIDER/NAMIC Delaware SCIMED Life Systems Limited England SCIMED Medizentechnik Gmbh i.L. Germany Schneider (Europe) GmbH Switzerland Schneider Belgium N.V. Belgium Schneider Ireland B.V. The Netherlands Schneider Puerto Rico Delaware Scimed Life Systems, Inc. Minnesota Symbiosis Corporation Florida Target Therapeutics International Sales Corporation Barbados Target Therapeutics International, Inc. California Target Therapeutics, Inc. Delaware