(19)

(11)

EP 0 054 064 A1

(12)

(43) Date of publication: 23.06.1982 Bulletin 1982/25 (21) Application number: 81901955.0 (22) Date of filing: 16.06.1981

(51) International Patent Classification (IPC):  A61B 18/ 18( . ) A61B 17/ 00( . ) (86) International application number: PCT/US1981/000809 (87) International publication number: WO 1981/003616 (24.12.1981 Gazette 1981/30)

(84) Designated Contracting States: CH FR LI NL SE (30) Priority: 17.06.1980 US 19800160217 (71) Applicants: BICHER, James I. West Bloomfield, MI 48033 (US) SANDHU, Taljit S. Detroit, MI 48202 (US) HETZEL, Fred W. Southfield, MI 48075 (US)	(72) Inventors: BICHER, James I. West Bloomfield, MI 48033 (US) SANDHU, Taljit S. Detroit, MI 48202 (US) HETZEL, Fred W. Southfield, MI 48075 (US)