A - Human Necessities – 61 – M
Patent
A - Human Necessities
61
M
128/127.1
A61M 25/00 (2006.01) A61M 25/01 (2006.01) A61M 25/10 (2006.01)
Patent
CA 1122494
ABSTRACT A miniaturized balloon catheter assembly includes a cannula and an inflatable tubular balloon constructed of a silastic tubing detachably mounted on the cannula for performing a surgical procedure in an animal vessel, especially a human vessel in response to pressure therein. In one embodiment, the balloon is detachably mounted with the detachability being responsive to pressure. In another embodiment, a valve, such as a pin-hole in the silastic material for example, is included in the balloon which opens only after the pressure within the balloon exceeds a pre- determined amount. According to a method of the invention, the cannula and the attached balloon are inserted into a small vessel and the balloon is pressurized therethrough. The balloon is partially inflated to allow fluid flow in the vessel to position the balloon at a desired location. Pressure is thereafter increased in the balloon to activate a desired procedure within the vessel. In the first embodiment the desired procedure is to withdraw the cannulla from the affixed balloon as the increased pressure lubricates the connection between the balloon and the cannula. In the second embodiment, the desired procedure is for the increased pressure to open the pin-hole and disperse a fluid into the vessel from the balloon.
301833
Pevsner Paul H.
Barrigar & Moss
Pevsner Paul H.
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