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1. (WO1991007203) A CATHETER DEVICE
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1991/007203 International Application No.: PCT/US1990/006107
Publication Date: 30.05.1991 International Filing Date: 24.10.1990
IPC:
A61M 25/00 (2006.01)
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
M
DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
25
Catheters; Hollow probes
Applicants:
W.L. GORE & ASSOCIATES, INC. [US/US]; 551 Paper Mill Road P.O. Box 9206 Newark, DE 19714, US
Inventors:
MYERS, David, J.; US
Agent:
SAMUELS, Gary, A. ; W.L. Gore & Associates, Inc. 551 Paper Mill Road P.O. Box 9206 Newark, DE 19714, US
Priority Data:
440,57422.11.1989US
Title (EN) A CATHETER DEVICE
(FR) CATHETER
Abstract:
(EN) This invention relates to a catheter device having a tubular portion wherein said tubular portion consists essentially of porous PTFE having a density less than about 1.6 grams per cubic centimeter. A catheter device of such porous PTFE tubing is adequately rigid for use as a catheter while having good flexibility to avoid kinking during bending. It is permeable to gases but hydrophobic and resistant to cellular ingrowth. Other embodiments of this invention include a catheter device wherein the tubular portion has a tip part of either greater or lesser density than that of the remainder of the tubular portion, so that the tip part is, respectively, more rigid or more flexible than the remainder of the tubular portion. One embodiment of the present invention may be used as an infusion cannula device. A process for using the catheter device of the present invention is described.
(FR) Un cathéter comprend une partie tubulaire essentiellement composée de PTFE poreux ayant une densité inférieure à 1,6 g environ par centimètre cube. Un tel cathéter en PTFE poreux est suffisamment rigide pour être utilisable comme cathéter tout en ayant une bonne flexibilité, ce qui empêche la formation de coques lorsqu'il est courbé. Il est perméable aux gaz mais hydrophobe et résistant à des excroissances cellulaires. D'autres modes de réalisation de l'invention comprennent un cathéter dont la partie tubulaire a une pointe ayant une densité supérieure ou inférieure à celle du reste de la partie tubulaire, de sorte que la pointe est, respectivement, plus rigide ou plus flexible que le reste de la partie tubulaire. Un mode de réalisation de l'invention peut être utilisé comme canule à perfusion. L'invention concerne également un procédé d'utilisation de ce cathéter.
Designated States: CA, JP
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, NL, SE)
Publication Language: English (EN)
Filing Language: English (EN)