Fluid injection device

A - Human Necessities – 61 – M

Patent

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Details

A61M 25/00 (2006.01) A61M 5/00 (2006.01) A61M 5/142 (2006.01) A61M 5/168 (2006.01) A61M 5/36 (2006.01)

Patent

CA 2431757

A catheter for use in vasculature or other body lumen includes a fluid injection bypass tube (228), leading to a elastically compressible pump bulb (230). Upon compression of the pump bulb, fluid such as contrast solution is injected through a one-way valve (234), into the catheter manifold lumen, and ultimately to the distal end of the catheter lumen, and into the patient vasculature. The one-way valve between the pump bulb and the catheter lumen has a threshold pressure to prevent unintented aspiration of fluid from the pump bulb during aspiration of fluid from the catheter itself.

L'invention concerne un cathéter à utiliser dans un système vasculaire ou une autre lumière corporelle comprenant un tube de pontage d'injection de fluide (228), menant à une pompe à poire (230) élastiquement compressible. Lors de la compression de la pompe à poire, du fluide tel qu'une solution de contraste est injecté par la valve anti-reflux (234), dans la lumière du collecteur du cathéter, et ensuite vers l'extrémité distale de la lumière du cathéter, et jusqu'au système vasculaire du patient. La valve anti-reflux située entre la pompe à poire et la lumière du cathéter présente une pression de seuil permettant d'empêcher une aspiration impromptue de fluide provenant de la pompe à poire lors de l'aspiration de fluide provenant du cathéter lui-même.

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