(19)

(11)

EP 0 507 894 A1

(12)

(43) Date of publication: 14.10.1992 Bulletin 1992/42 (21) Application number: 91914306.0 (22) Date of filing: 20.08.1991

(51) International Patent Classification (IPC):  A61F 9/ 007( . ) (86) International application number: PCT/BR1991/000017 (87) International publication number: WO 1992/003996 (19.03.1992 Gazette 1992/07)

(84) Designated Contracting States: CH DE FR GB IT LI (30) Priority: 30.08.1990 BR 19900004310 16.05.1991 BR 19910002005 (71) Applicant: ROIZENBLATT, Jaime 04005-Sao Paulo, SP (BR)	(72) Inventor: ROIZENBLATT, Jaime 04005-Sao Paulo, SP (BR) (74) Representative: Gold, Tibor Z.  Stephenson Harwood One, St. Paul's Churchyard London EC4M 8SH London EC4M 8SH (GB)