Catheter with shape memory polymer distal tip for deployment of therapeutic devices
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United States of America Patent
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Sep 25, 2001
Grant Date -
N/A
app pub date -
May 22, 1998
filing date -
May 22, 1998
priority date (Note) -
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status (Latency Note)
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Abstract
The occlusion balloon catheter includes an elongated tubular catheter body having a fluid lumen for inflation of an occlusion balloon detachably mounted to the catheter body by a tubular shape memory collar. The occlusion balloon includes a valve for sealing the occlusion balloon when it is inflated, and the collar of shape memory material clamps onto a stem of the valve. The shape memory collar can be heated by a fiber optic pusher member threaded through the catheter body to cause the collar to assume an enlarged configuration disconnecting the occlusion balloon. A method of detaching the occlusion balloon from the occlusion balloon catheter involves the steps of placing the occlusion balloon catheter within a guiding catheter, and placing the guiding catheter within the vasculature so that the distal opening of the guiding catheter extends into an aneurysm or other deformation to be treated. The fiber optic pusher is then used to expel the device into the aneurysm.
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