System and method for electrically determining position and detachment of an implantable device
First Claim
1. A method of positioning an implant in a body, comprising:
- providing the implant, a delivery member, a temporary connection, and a catheter, inserting the catheter within a vascular cavity in the body;
attaching the implant to a distal end of the delivery member with the temporary connection;
advancing the delivery member, the temporary connection and the implant through a proximal end of the catheter; and
monitoring an electrical condition related to a position of the temporary connection in the catheter, the electrical condition changing when the temporary connection reaches a predetermined location.
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Accused Products
Abstract
A method and system for positioning a detachment zone and an implant, such as a vaso-occlusive coil or a stent, attached thereto in a body. A catheter is inserted within a vascular cavity in the body. The implant is attached to a distal end of a delivery member using a temporary connection, such as an electrolytic, mechanical, hydraulic, heat-sensitive or Radio Frequency (RF) sensitive connection, with an insulation member between the wire and the implant. The delivery member, temporary connection and implant are advanced through the catheter. An electrical condition, such as current, voltage and impedance, related to the position of the temporary connection in the catheter is monitored with an electrical measurement device or sensor. The electrical condition changes when the temporary connection reaches or exits a predetermined location, for example, the distal end of the catheter and contacts a conductive component of the body, such as blood in an aneurysm.
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Citations
66 Claims
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1. A method of positioning an implant in a body, comprising:
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providing the implant, a delivery member, a temporary connection, and a catheter, inserting the catheter within a vascular cavity in the body;
attaching the implant to a distal end of the delivery member with the temporary connection;
advancing the delivery member, the temporary connection and the implant through a proximal end of the catheter; and
monitoring an electrical condition related to a position of the temporary connection in the catheter, the electrical condition changing when the temporary connection reaches a predetermined location. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A system for positioning an implant in a body, comprising:
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a catheter having a proximal end and a distal end, the catheter being inserted into a vascular cavity in the body;
a delivery member;
a temporary connection joining the implant and a distal end of the delivery member; and
an electrical measurement device, the delivery member, the temporary connection and the implant being advanced through the catheter, the electrical measuring device monitoring an electrical condition related to a position of the temporary connection in the catheter, the electrical condition changing when the temporary connection reaches a predetermined location. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66)
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Specification