(19)

(11)

EP 0 549 712 A1

(12)

(43) Date of publication: 07.07.1993 Bulletin 1993/27 (21) Application number: 91918189.0 (22) Date of filing: 10.09.1991

(51) International Patent Classification (IPC):  A61B 17/ 32( . ) A61M 1/ 00( . ) A61B 10/ 02( . ) A61B 17/ 22( . ) A61B 18/ 24( . ) A61B 19/ 00( . ) A61B 18/ 14( . ) A61B 10/ 00( . ) A61B 17/ 00( . ) A61B 17/ 28( . ) A61B 18/ 26( . ) (86) International application number: PCT/US1991/006547 (87) International publication number: WO 1992/004059 (19.03.1992 Gazette 1992/07)

(84) Designated Contracting States: DE FR GB IT SE (30) Priority: 11.09.1990 US 19900580945 22.10.1990 US 19900602359 (71) Applicant: MECTRA LABS, INC. Bloomfield, IN 47424 (US)	(72) Inventors: CLEMENT, Thomas, P. Bloomington, IN 47401 (US) WEBER, David, P. Bloomington, IN 47401 (US) (74) Representative: Pfenning, Meinig & Partner  Kurfürstendamm 170 D-10707 Berlin D-10707 Berlin (DE)