Catheter with larger diameter proximal end portion

Details Catheter with larger diameter proximal end portion Catheter with larger diameter proximal end portion

A - Human Necessities

61

M

A61M 25/00 (2006.01) A61M 25/18 (2006.01)

Patent

CA 2600841

Catheter assembly (100) having at least one lumen (150 or 160) and joined to hub (106). While the lumen inner diameter(s) remain constant from distal end (144) of the catheter (140) to proximal end (142), the outer catheter diameter increases proximate the hub (106) providing increased resistance to kinking during connection and disconnection from medical apparatus. The increased proximal catheter diameter preferably is sufficiently large to plug the proximal end of an introducer sheath through which the catheter is inserted during patient placement, to plug the proximal sheath end and minimize blood aspiration therethrough, and later serves to fill the vascular insertion upon complete catheter insertion after removal of the introducer sheath again to minimize blood aspiration through the vascular incision. The catheter may have two lumens (150, 160) or more, joined to respective extension tubes in hub (106).

Ensemble de cathéter (100) ayant au moins une lumière (150 ou 160) et raccordé à un embranchement (106). Alors que le ou les diamètres intérieurs de lumière restent constants depuis l'extrémité distale (144) du cathéter (140) jusqu~à son extrémité proximale (142), le diamètre externe du cathéter augmente à proximité de l~embranchement (106) fournissant une résistance accrue à la coudure pendant les connexion et déconnexion à un appareil médical. Le diamètre proximal augmenté du cathéter est de préférence suffisamment large pour boucher l~extrémité proximale d'une gaine introductrice à travers laquelle le cathéter est inséré pendant sa mise en place sur le patient, afin de boucher l'extrémité proximale de la gaine et de minimiser l'aspiration du sang dans celle-ci, et plus tard il sert encore à remplir l'insertion vasculaire au moment où l'insertion du cathéter est terminée après le retrait de la gaine introductrice afin de minimiser l'aspiration du sang par l'incision vasculaire. Le cathéter peut avoir deux lumières (150, 160) ou plus, raccordées à des tubes d'extension respectifs dans l~embranchement (106).

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