Enhanced chronic lead removal
First Claim
Patent Images
1. An implantable medical device, comprising:
- a medical unit; and
a casing at least partially enclosing the medical unit, the casing being formed of a base polymer having surface modifying pendant groups, the surface modifying pendant groups being formed of an acrylamide polymer or an acrylamide copolymer.
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Abstract
An implantable medical device, perhaps a pacemaker lead, has a medical unit and a casing at least partially enclosing the medical unit. The casing is formed of a base polymer having surface modifying pendant groups formed of an acrylamide polymer or an acrylamide copolymer, perhaps polyisopropyl acrylamide. The base polymer may be a polyurethane, polyimide, fluoropolymer or polyolefin, for example.
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Citations
31 Claims
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1. An implantable medical device, comprising:
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a medical unit; and
a casing at least partially enclosing the medical unit, the casing being formed of a base polymer having surface modifying pendant groups, the surface modifying pendant groups being formed of an acrylamide polymer or an acrylamide copolymer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method of implanting a removeable medical device, comprising:
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implanting in a patient a medical unit having a casing formed of a base polymer having surface modifying pendant groups; and
allowing the surface modifying pendant groups to form a hydrogel within the patient. - View Dependent Claims (16, 17, 18)
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19. An implantable medical device, comprising:
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a medical unit; and
a casing at least partially enclosing the medical unit, the casing being formed of a base polymer having surface modifying end groups, the surface modifying end groups being cross-linked. - View Dependent Claims (20)
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21. A method of forming an implantable medical device, comprising:
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forming a medical unit;
forming a casing at least partially enclosing the medical unit, the casing being formed of a base polymer having surface modifying pendant groups; and
after forming the casing, forming a polymeric outer layer on the casing by covalently bonding the polymeric material to the surface modifying pendant groups. - View Dependent Claims (22)
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23. An implantable medical device, comprising:
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a medical unit;
a casing at least partially enclosing the medical unit, the casing being formed of a base polymer having surface modifying pendant groups; and
a thermally active device to change the temperature of the polymer material.
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24. A method of extracting a chronically implanted medical device, comprising:
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changing the temperature of an implanted medical device having a medical unit and a casing at least partially enclosing the medical unit, the casing being formed of a base polymer having surface modifying pendant groups; and
extracting the implanted medical device. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31)
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Specification