(19)

(11)

EP 0 449 881 A1

(12)

(43) Date of publication: 09.10.1991 Bulletin 1991/41 (21) Application number: 90900585.0 (22) Date of filing: 20.12.1989

(51) International Patent Classification (IPC):  A61B 5/ 00( . ) A61F 2/ 02( . ) A61F 2/ 36( . ) G01H 13/ 00( . ) A61B 5/ 103( . ) A61F 2/ 30( . ) A61F 2/ 46( . ) (86) International application number: PCT/US1989/005683 (87) International publication number: WO 1990/006720 (28.06.1990 Gazette 1990/15)

(84) Designated Contracting States: AT BE CH DE ES FR GB IT LI LU NL SE (30) Priority: 21.12.1988 US 19880290240 (71) Applicant: ROSENSTEIN, Alexander D. Laguna Beach, CA 92677 (US)	(72) Inventor: ROSENSTEIN, Alexander D. Laguna Beach, CA 92677 (US) (74) Representative: Spall, Christopher John, et al  BARKER, BRETTELL & DUNCAN 138 Hagley Road Edgbaston Birmingham B16 9PW Edgbaston Birmingham B16 9PW (GB)