Endoscopic cutting device

Details Endoscopic cutting device Endoscopic cutting device

A - Human Necessities

61

B

A61B 17/04 (2006.01) A61B 17/32 (2006.01)

Patent

CA 2596249

An endoscopic cutting device is disclosed. The device comprises an inner catheter including an inner wall having an opening formed therethrough. The inner wall further has a cutting blade moveably disposed thereon and biasingly extends through the opening. The inner wall has a receiving member disposed thereon and is configured to cooperatively receive the cutting blade. The device further comprises an outer catheter including an outer wall moveably disposed about the inner catheter. The outer wall has an aperture formed therethrough. The aperture is configured to moveably align with the opening of the inner wall for allowing the cutting blade to biasingly extend through the opening and biasingly engage the cutting blade with the receiving member to cut.

L'invention concerne un instrument coupant endoscopique. Cet instrument comprend un cathéter interne comportant une paroi interne à travers laquelle est formée une ouverture. Une lame coupante est disposée de façon mobile sur la paroi interne, cette lame s'étendant sous contrainte à travers l'ouverture. La paroi interne est pourvue d'un élément de réception et elle coopère pour recevoir la lame coupante. L'instrument selon l'invention comprend par ailleurs un cathéter externe comportant une paroi externe disposée de façon mobile autour du cathéter interne. Un orifice est formé dans la paroi externe. Cet orifice est conçu pour s'aligner de façon mobile avec l'ouverture de la paroi interne de sorte que la lame coupante puisse s'étendre sous contrainte à travers l'ouverture et venir en prise sous contrainte avec l'élément de réception en vue d'une opération de découpe.

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