(19)

(11)

EP 0 152 431 A1

(12)

(43) Date of publication: 28.08.1985 Bulletin 1985/35 (21) Application number: 84903019.0 (22) Date of filing: 24.07.1984

(51) International Patent Classification (IPC):  A61F 2/ 08( . ) A61L 27/ 36( . ) (86) International application number: PCT/US1984/001186 (87) International publication number: WO 1985/000511 (14.02.1985 Gazette 1985/04)

(84) Designated Contracting States: AT DE FR GB SE (30) Priority: 25.07.1983 US 19830517020 (71) Applicant: MEDLEN, John C. Tucson, AZ 85718 (US)	(72) Inventor: MEDLEN, John C. Tucson, AZ 85718 (US) (74) Representative: Crawford, Fiona Merle  Elkington and Fife Prospect House 8 Pembroke Road Sevenoaks, Kent TN13 1XR Sevenoaks, Kent TN13 1XR (GB)