Catheter placement system providing retraction of the sharp...

Details Catheter placement system providing retraction of the sharp... Catheter placement system providing retraction of the sharp...

A - Human Necessities

61

M

A61M 25/06 (2006.01) A61M 5/32 (2006.01)

Patent

CA 2209103

A trocar (26) and catheter (24) assembly for automatically disarming the trocar after placement of the catheter into a patient's blood vessel includes a spring (46) urging retraction of the trocar and a releasable retainer mechanism (30) for maintaining the trocar in an extended position during insertion of the catheter into the blood vessel. The catheter is removably mounted to a handle (22) which defines an internal passage. Disengaging the handle from the catheter after placement of the catheter into the blood vessel actuates the releasable retainer mechanism for allowing the trocar to be drawn into the handle passage under the influence of a spring, to enclose the sharpened end (28) of the trocar after use.

Ensemble trocart (26) et cathéter (24) permettant d'escamoter automatiquement le trocart après la mise en position du cathéter dans un vaisseau sanguin du patient. Cet ensemble comprend un ressort (46) poussant le trocart pour le mettre en position rentrée et un mécanisme de retenue libérable (30) permettant de maintenir le trocart dans une position déployée au cours de l'introduction du cathéter dans le vaisseau sanguin. Le cathéter est monté amovible sur une poignée (22) qui définit un passage interne. La libération de la poignée du cathéter après la mise en position de ce dernier dans le vaisseau sanguin actionne le mécanisme de retenue libérable de sorte que le trocart puisse être rentré dans le passage ménagé dans la poignée sous l'effet du ressort, et que son extrémité aiguisée (28) soit enfermée après l'utilisation.

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