Process for forming an occlusion in a body cavity
First Claim
1. A process for forming an occlusion in a body cavity in the presence of ionic body fluids, comprising:
- deploying a conductive implant detachably connected to a pusher wire at least partially into a body cavity, said pusher wire being insulated from said implant, said implant forming a return path for current provided to said pusher wire through ionic body fluids, and imposing a current in said pusher wire such that an electrolytically severable joint disposed between said implant and said pusher wire releases said implant from said pusher wire.
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Accused Products
Abstract
This invention is an apparatus for the formation of occlusions in spaces in the human body, occluding such as thrombi in arteries, veins, aneurysms, vascular malformations and arteriovenous fistulas. In particular, it deals with a one piece assembly having an improved electrolytically erodable link to an occlusive member and further having an incorporated return electrode in the assembly. The occlusion-forming member is introduced to and is intended to remain at the desired occlusion site. The invention also relates to the joint itself. The invention further includes a method for introduction and electrolytic separation of the device.
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Citations
20 Claims
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1. A process for forming an occlusion in a body cavity in the presence of ionic body fluids, comprising:
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deploying a conductive implant detachably connected to a pusher wire at least partially into a body cavity, said pusher wire being insulated from said implant, said implant forming a return path for current provided to said pusher wire through ionic body fluids, and imposing a current in said pusher wire such that an electrolytically severable joint disposed between said implant and said pusher wire releases said implant from said pusher wire. - View Dependent Claims (2, 3, 4)
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5. A process for forming an occlusion in a body cavity in the presence of ionic body fluids, comprising:
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deploying an implant at least partially into a body cavity, said implant detachably connected to a composite core wire via an electrolytically erodable junction, said composite core wire having a first conductive member and said implant having a second conductive member in electrical contact with said first conductive member, said junction being electrically insulated from said first conductive member and said second conductive member, said implant forming a return path for current provided to said first conductive member through ionic body fluids, and imposing a current to said junction via said composite core wire such that said junction electrolytically erodes to separate said first conductive member from said second conductive member and release said implant into said body cavity. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13)
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14. A process for forming an occlusion in a body cavity in the presence of body fluids, comprising:
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deploying an implant at least partially into a body cavity, said implant detachably connected to a composite core wire via an electrolytically erodable junction, said composite core wire having first and second electrically conductive members and a first electrically insulating member, said first electrically insulating member configured to directly contact both said first electrically conductive member and said second electrically conductive member, to electrically insulate them from each other, and to electrically insulate said first electrically conductive member from surrounding body fluids, and applying a potential difference between said first electrically conductive member and said second electrically conductive member such that said junction electrolytically erodes to allow complete physical detachment between said implant and said core wire to release said implant into said body cavity. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification