Medical lead and method of making and using
First Claim
Patent Images
1. An implantable medical lead comprising:
- a lead subassembly comprising an electrode, a conductor electrically coupled to said electrode, and a connector electrically coupled to a proximal end of said conductor; and
a porous tubular covering extending over at least a portion of said electrode and at least a portion of said conductor, wherein said porous tubular covering has an outer surface pore size such that said porous tubular covering substantially isolates said portion of said electrode and said portion of said conductor from ingrowth of tissue.
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Accused Products
Abstract
A continuous sheath of open-celled porous plastic, preferably ePTFE, is used on the outside of an implantable lead, extending along the lead body and the electrodes, in such a way that the lead is isodiametric along its length, and is very strong in tension as is required for lead removal. Because the plastic is open-celled, when the pores are filled with saline, the lead can deliver defibrillation energy through the pores in the plastic. Pore size is chosen to discourage tissue ingrowth while allowing for defibrillation energy delivery through it.
166 Citations
34 Claims
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1. An implantable medical lead comprising:
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a lead subassembly comprising an electrode, a conductor electrically coupled to said electrode, and a connector electrically coupled to a proximal end of said conductor; and a porous tubular covering extending over at least a portion of said electrode and at least a portion of said conductor, wherein said porous tubular covering has an outer surface pore size such that said porous tubular covering substantially isolates said portion of said electrode and said portion of said conductor from ingrowth of tissue. - 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)
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25. An implantable medical lead comprising:
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a lead body having a proximal end and a distal end and including at least one conductor; an electrode positioned on said lead body and electrically coupled to said conductor; a connector positioned at said proximal end of said lead body and electrically coupled to said conductor; and a porous tubular covering having proximal and distal ends and extending over at least a portion of said electrode and at least a portion of said lead body. - View Dependent Claims (26)
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27. A method of making an implantable medical lead comprising the steps of:
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(a) electrically connecting a conductor to a connector; (b) electrically connecting said conductor to an electrode; and (c) inserting said electrode and conductor into a porous tube having proximal and distal ends. - View Dependent Claims (28, 29, 30, 31, 32)
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33. A method for implanting a lead having a porous tubular covering extending over at least a portion of an electrode and at least a portion of a lead body comprising the steps of:
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(a) applying a wet-out agent to said lead; and (b) positioning said lead within a patient. - View Dependent Claims (34)
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Specification