(19)

(11)

EP 0 086 773 A1

(12)

(43) Date of publication: 31.08.1983 Bulletin 1983/35 (21) Application number: 81902420.0 (22) Date of filing: 26.08.1981

(51) International Patent Classification (IPC):  A61F 13/ 42( . ) G01N 31/ 22( . ) A61L 15/ 20( . ) A61F 13/ 15( . ) (86) International application number: PCT/US1981/001141 (87) International publication number: WO 1983/000742 (03.03.1983 Gazette 1983/06)

(84) Designated Contracting States: FR (71) Applicant: TOWSEND, Marvin S Towson, MD 21204 (US)	(72) Inventor: TOWSEND, Marvin S Towson, MD 21204 (US)