(19)

(11)

EP 0 471 663 A1

(12)

(43) Date of publication: 26.02.1992 Bulletin 1992/09 (21) Application number: 89906000.0 (22) Date of filing: 08.05.1989

(51) International Patent Classification (IPC):  A61F 5/ 451( . ) (86) International application number: PCT/US1989/001960 (87) International publication number: WO 1990/013274 (15.11.1990 Gazette 1990/26)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (71) Applicant: TEMPLE, John E Chelsea, MI 48118 (US)	(72) Inventor: TEMPLE, John E Chelsea, MI 48118 (US) (74) Representative: Kooy, Leendert Willem  OCTROOIBUREAU VRIESENDORP & GAADE P.O. Box 266 NL-2501 AW The Hague NL-2501 AW The Hague (NL)