(19)

(11)

EP 0 527 868 A1

(12)

(43) Date of publication: 24.02.1993 Bulletin 1993/08 (21) Application number: 91909243.0 (22) Date of filing: 29.04.1991

(51) International Patent Classification (IPC):  A61M 5/ 142( . ) A61M 39/ 28( . ) F04B 43/ 08( . ) (86) International application number: PCT/US1991/002930 (87) International publication number: WO 1991/016933 (14.11.1991 Gazette 1991/26)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IT LI LU NL SE (30) Priority: 04.05.1990 US 19900518777 (71) Applicant: BLOCK MEDICAL, INC. Carlsbad, California 92008 (US)	(72) Inventors: SANCOFF, Gregory, E. Leucadia, CA 92024 (US) MC WILLIAMS, Mark San Diego, CA 92126 (US) CORDNER, Edward, D., Jr. Carlsbad, CA 92008 (US) (74) Representative: Spall, Christopher John  BARKER, BRETTELL & DUNCAN 138 Hagley Road Edgbaston Birmingham B16 9PW Edgbaston Birmingham B16 9PW (GB)