Catheter insertion device with retractable needle

Details Catheter insertion device with retractable needle Catheter insertion device with retractable needle

A - Human Necessities

61

M

A61M 25/06 (2006.01) A61M 5/50 (2006.01) A61M 25/18 (2006.01) A61M 5/32 (2006.01)

Patent

CA 2445902

A catheter insertion device (10) is provided for inserting an over-the-needle catheter (70). The device includes an insertion needle (45) that is retractable into the housing (20) of the device after use to prevent exposure to the contaminated needle. A needle retainer (60) releasably retains the needle in an extended position against the rearward bias of a biasing element (80). The needle retainer (60) engages the hub (72) of the catheter so that when the catheter (70) is removed from the insertion device (10), the needle retainer automatically releases the needle. The biasing element (80) then propels the needle (45) rearwardly into the housing (20) of the device. A method for inserting a catheter is also provided, in which the needle is hooded by the catheter during the insertion procedure.

L'invention concerne un dispositif d'introduction (10) de cathéter qui sert à introduire un cathéter sur aiguille (70). Ce dispositif comprend une aiguille d'introduction (45) qui peut se rétracter dans le boîtier (20) du dispositif après utilisation, pour empêcher toute exposition à l'aiguille contaminée. Un élément de retenue (60) de l'aiguille retient cette dernière de manière libérable en position déployée, contre la force de repli exercée par l'élément de sollicitation élastique (80). L'élément de retenue (60) vient en prise avec la garde (72) du cathéter, pour que, au moment où le cathéter est retiré du dispositif d'introduction (10), l'élément de retenue de l'aiguille libère celle-ci automatiquement. L'élément de sollicitation élastique (80) propulse ensuite l'aiguille vers l'arrière dans le boîtier (20) du dispositif. L'invention concerne enfin un procédé permettant d'introduire un cathéter, dans lequel l'aiguille est coiffée par le cathéter durant la procédure d'introduction.

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