Collet-type crimping tool

A - Human Necessities – 61 – F

Patent

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Details

A61F 2/06 (2006.01)

Patent

CA 2247227

A sterile tool for crimping a stent onto a balloon catheter is disclosed. The stent crimping tool includes two major components, a cylindrical body havingexternal threads and a rotating collar with internal threads engaging the external threads. The collet and of the cylindrical body split into segmented jaws that are biased to flare outward in an open state. A stent loaded onto a balloon catheter and situated inside the open-segmented jaws can undergo a crimping operation when the collar is rotated and advances toward the flared open-segmented jaws. When the collar engages the segmented jaws, the jaws are forced to converge and close onto the stent-and-catheter assembly, thereby crimping the stent onto the balloon catheter.

La présente invention fait état d'un outil stérile servant à aplatir un extenseur sur un cathéter à ballonnet. L'outil comprend deux pièces principales, un corps cylindrique doté d'un filetage externe et une bague munie de filetage interne s'accouplant avec le filetage externe. La bague et le corps cylindrique se divisent en pinces segmentées, qui sont tendues de manière à s'évaser vers l'extérieur lorsqu'elles sont en position ouverte. Un extenseur placé sur un cathéter à ballonnet et situé à l'intérieur des pinces segmentées ouvertes est aplati lorsque la bague est tournée et avance vers les pinces ouvertes. Lorsque la bague entre en contact avec les pinces, celles-ci sont comprimées de manière à converger et à se refermer sur l'extenseur et le cathéter, ce qui aplatit l'extenseur sur le cathéter.

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