Porous pacemaker electrode tip using a porous substrate
First Claim
1. An implantable stimulation lead for a cardiac pacemaker having a proximal end adapted to be connected to a pulse generator and a distal tip region having a surface area adapted to physically contact heart tissue for stimulating heart tissue, sensing heart contractions and promoting tissue ingrowth, said distal tip region comprising:
- a first member defining a conductive electrode having a conductive surface area extending substantially radially relative to the lead and forming a first portion of said distal tip surface area to stimulate heart tissue and sense heart contractions; and
a second member, contiquous with said first member, defining a non-conductive porous substrate having a porous surface area extending substantially radially relative to the lead and forming a second portion of said distal tip surface area for promoting tissue ingrowth and attachment of said distal tip to heart tissue in substantially the same radially extending conductive surface area as said first portion.
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Accused Products
Abstract
An implantable sitmulating lead for a cardiac pacemaker has a distal tip having a surface area adapted to physically contact heart tissue for pacing the heart tissue, sensing heart contractions and promoting tissue ingrowth. The distal tip includes a conductive electrode and a porous non-conductive substrate, which together define the surface area of the distal tip. The conductive electrode and porous substrate are provided as first and second members, although the surface area of each is adaptive to present a singular, smooth distal tip region for the electrode lead.
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Citations
18 Claims
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1. An implantable stimulation lead for a cardiac pacemaker having a proximal end adapted to be connected to a pulse generator and a distal tip region having a surface area adapted to physically contact heart tissue for stimulating heart tissue, sensing heart contractions and promoting tissue ingrowth, said distal tip region comprising:
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a first member defining a conductive electrode having a conductive surface area extending substantially radially relative to the lead and forming a first portion of said distal tip surface area to stimulate heart tissue and sense heart contractions; and a second member, contiquous with said first member, defining a non-conductive porous substrate having a porous surface area extending substantially radially relative to the lead and forming a second portion of said distal tip surface area for promoting tissue ingrowth and attachment of said distal tip to heart tissue in substantially the same radially extending conductive surface area as said first portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification