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US 4,731,055 AGranted
Blood flow conduit
AssigneeBecton, Dickinson and Company
InventorsLev A. Melinyshyn, Jeffrey M. Stupar, Edward M. Goldberg
Life of this patent
Estimating the term…
Abstract
A improved blood flow conduit provided with external inflatable balloons and having rigid end portions for facilitating insertion into blood vessels and means for detecting pulsatile flow in the conduit and excessive pressure in the balloons.
Claims13
A blood flow conduit comprising:
- a resilient tube having a passageway therethrough and at least two end portions provided with external inflatable balloons encircling the tube adjacent to said end portions for retaining the end portions within respective blood vessels;
- rigid means, positioned at one of said end portions, for preventing the collapse of one of said end portions in the event of the application of excessive force directed inwardly toward said one end portion by the over-inflation of said balloon positioned closest to said rigid means;
- and
- an inflation tube joined to said resilient tube between said end portions, said inflation tube having at least two inflation lumens with each of said lumens being in fluid communication with one of said balloons for inflating said balloons.
1 more element
A blood flow conduit comprising:
- a resilient tube having at least two end portions provided with external inflatable balloons encircling the tube adjacent said end portions for retaining the end portions within respective blood vessels;
- and
- pressure sensing means for providing a tactile and visual indication of the pressure applied in inflating said balloon, said pressure sensing means including indicator balloons in communication with said inflatable balloons wherein the resilience of said indicator balloons is such that said indicator balloons begin expanding when the maximum desirable pressure in said inflatable balloons is reached.
Dependencies are inferred from the claim text.