Cardiac lead with shape-memory structure
First Claim
1. A cardiac stimulator lead, comprising:
- a lead body having a connector for coupling to a cardiac stimulator and a flexible insulating sleeve having a first outer diameter;
an electrode coupled to the insulating sleeve;
a conductor wire coupled between the connector and the electrode; and
an annular seal coupled to the lead body and being composed of a thermally-sensitive shape-memory polymeric material whereby the seal is deformable in situ from a temporary shape with a second outer diameter to a permanent shape with a third outer diameter that is greater than the second outer diameter.
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Accused Products
Abstract
A cardiac stimulator lead is provided that includes a lead body that has a connector for coupling to a cardiac stimulator and a flexible insulating sleeve that has a first outer diameter. An electrode is coupled to the insulating sleeve. A conductor wire is coupled between the connector and the electrode. An annular seat is coupled to the lead body and is composed of a thermally-sensitive shape-memory polymeric material whereby the seal is deformable in situ from a temporary shape with a second outer diameter to a permanent shape with a third outer diameter that is greater than the second outer diameter. A shape-memory polymeric suture sleeve may be included that can tightly clamp the lead sleeve in situ.
141 Citations
18 Claims
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1. A cardiac stimulator lead, comprising:
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a lead body having a connector for coupling to a cardiac stimulator and a flexible insulating sleeve having a first outer diameter; an electrode coupled to the insulating sleeve; a conductor wire coupled between the connector and the electrode; and an annular seal coupled to the lead body and being composed of a thermally-sensitive shape-memory polymeric material whereby the seal is deformable in situ from a temporary shape with a second outer diameter to a permanent shape with a third outer diameter that is greater than the second outer diameter. - View Dependent Claims (2, 3, 4, 6, 7, 8, 9)
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5. The cardiac stimulator lead of claim comprising a suture sleeve positioned around the insulating sleeve and being composed of a thermally-sensitive shape-memory polymeric material whereby the suture sleeve is deformable in situ from a temporary shape with a first inner diameter to a permanent shape with a second inner diameter that is less than than the first inner diameter and the first outer diameter of the insulating sleeve.
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10. A suture sleeve for a cardiac lead that has an insulating sleeve with a first outer diameter, comprising:
a tubular body having a lumen extending therethrough whereby the tubular body may be slipped over the cardiac lead, the tubular body being composed of a thermally-sensitive shape-memory polymeric material whereby the tubular body is deformable in situ from a temporary shape with a first inner diameter to a permanent shape with a second inner diameter that is less than the first inner diameter and the first outer diameter of the insulating sleeve. - View Dependent Claims (11, 12)
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13. A cardiac stimulator lead, comprising:
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a tubular lead body having a connector for connecting to a cardiac stimulator and an insulating sleeve coupled to the connector and having a first outer diameter; an electrode coupled to the insulating sleeve; a conductor wire coupled between the connector and the electrode; and a suture sleeve having a lumen extending therethrough to receive the insulating sleeve, the suture sleeve being composed of a thermally-sensitive shape-memory polymeric material whereby the suture sleeve is deformable in situ from a temporary shape with a first inner diameter to a permanent shape with a second inner diameter that is less than the first inner diameter and the first outer diameter of the insulating sleeve. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification