Introducer sheath assembly with hub and method of joining a...

A - Human Necessities – 61 – M

Patent

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Details

A61M 25/01 (2006.01) A61M 25/00 (2006.01) B23P 11/00 (2006.01) B29C 65/56 (2006.01)

Patent

CA 2710551

A tearaway introducer sheath assembly (10) for use in implantation of a catheter into a patient, having an elongated polytetrafluoroethylene sheath tube (12) and a proximal polyethylene hub component (16). The hub comprises two halves (22) insert molded about the sheath tube proximal end and joined to each other by frangible webs (28) enabling manual splitting. At least one pair of opposed holes (42) is formed through the tube proximal end portion 44, and a polyethylene liner (46) is inserted into the tube's proximal end portion. The polyethylene flows into the at least one pair of holes (42) to fuse with the liner, establishing a pair of physical joints (50') integrally joining the liner (46) to a respective hub half (22). Upon manual splitting of the hub halves, the sheath tube easily splits along its length as a result of a property of the polytetrafluoroethylene material.

La présente invention concerne un ensemble gaine d'introduction détachable (10) destiné à être utilisé dans l'implantation d'un cathéter dans un patient, comportant un tube de gaine allongé en polytétrafluoroéthylène (12) et un composant de raccord proximal en polyéthylène (16). Le raccord comprend deux moitiés (22) moulées par insertion autour de l'extrémité proximale du tube de gaine et jointes l'une à l'autre par des bandes cassantes (28) permettant la séparation manuelle. Au moins une paire de trous opposés (42) est formée à travers la partie d'extrémité proximale (44) du tube, et un revêtement en polyéthylène (46) est inséré dans la partie d'extrémité proximale du tube. Le polyéthylène s'écoule dans la ou les paires de trous (42) pour fusionner avec le revêtement, d'où la formation d'une paire de joints physiques (50') joignant intégralement le revêtement (46) à une moitié de raccord respective (22). Lors de la séparation manuelle des moitiés de raccord, le tube de gaine se sépare facilement sur sa longueur en raison d'une propriété du matériau de polytétrafluoroéthylène.

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