Lead with inflatable fixation mechanism
First Claim
1. A medical electrical lead comprising:
- an elongate lead body having a proximal end, a distal end, an outer surface, and an inner surface, the body being made from an electrically insulative material and dimensioned such that the distal end can be implanted in a coronary sinus or coronary vein;
an inflatable member disposed on the outer surface of the body between the proximal and distal ends, the inflatable member adapted to assume a deflated state and an inflated state in which the inflatable member is adapted to impart a radial force on and frictionally engage a surface of the coronary sinus or coronary vein for fixation of the distal end therein, the inflatable member including a resilient membrane attached to and extending partially circumferentially around a portion of the lead body;
a conductive member extending from at least the proximal end toward the distal end of the body;
an inner insulating layer disposed between the conductive member and the inner surface of the body and extending from the proximal end toward the distal end;
an inflation lumen between the inner insulating layer and the inner surface of the body in fluid communication with the inflatable member; and
an electrode on the body electrically coupled to the conductive member.
1 Assignment
0 Petitions
Accused Products
Abstract
A medical electrical lead configured for use in stimulating the left side of the heart (i.e., the left ventricle). In one embodiment, the lead includes an elongate lead body including an inner surface. An inflatable member is disposed on the outer surface of the body between its proximal and distal ends, the inflatable member being adapted when inflated to impart a radial force on and frictionally engage a surface of the coronary sinus or coronary vein for fixation of the distal end of the lead therein. The lead further includes a conductive member extending from the proximal end toward the distal end, and an inner insulating layer positioned between the conductive member and the inner surface of the body. Separation between the inner insulating layer and the inner surface of the body defines an inflation lumen in fluid communication with the inflatable member.
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Citations
19 Claims
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1. A medical electrical lead comprising:
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an elongate lead body having a proximal end, a distal end, an outer surface, and an inner surface, the body being made from an electrically insulative material and dimensioned such that the distal end can be implanted in a coronary sinus or coronary vein; an inflatable member disposed on the outer surface of the body between the proximal and distal ends, the inflatable member adapted to assume a deflated state and an inflated state in which the inflatable member is adapted to impart a radial force on and frictionally engage a surface of the coronary sinus or coronary vein for fixation of the distal end therein, the inflatable member including a resilient membrane attached to and extending partially circumferentially around a portion of the lead body; a conductive member extending from at least the proximal end toward the distal end of the body; an inner insulating layer disposed between the conductive member and the inner surface of the body and extending from the proximal end toward the distal end; an inflation lumen between the inner insulating layer and the inner surface of the body in fluid communication with the inflatable member; and an electrode on the body electrically coupled to the conductive member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A medical electrical lead comprising:
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an elongate lead body having a proximal end, a distal end, an outer surface, and an inner surface, the body being made from an electrically insulative material and dimensioned such that the distal end can be implanted in a coronary sinus or coronary vein; an inflatable member disposed on the outer surface of the body between the proximal and distal ends, the inflatable member adapted to assume a deflated state and an inflated state in which the inflatable member is adapted to impart a radial force on and frictionally engage a surface of the coronary sinus or coronary vein for fixation of the distal end therein; a conductive member extending from at least the proximal end toward the distal end of the body, the conductive member including an insulative coating, wherein separation between the insulative coating and the inner surface of the body defines an inflation lumen in fluid communication with the inflatable member; and an electrode on the body electrically coupled to the conductive member. - View Dependent Claims (10, 11, 12, 13)
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14. A medical electrical lead comprising:
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an elongate lead body having a proximal end, a distal end, an outer surface, and an inner surface, the body being made from an electrically insulative material and dimensioned such that the distal end can be implanted in a coronary sinus or coronary vein; an inflatable member disposed on the outer surface of the body between the proximal and distal ends, the inflatable member adapted to assume a deflated state and an inflated state in which the inflatable member is adapted to impart a radial force on and frictionally engage a surface of the coronary sinus or coronary vein for fixation of the distal end therein; a conductive member extending from at least the proximal end toward the distal end of the body; a generally tubular, flexible sheath made of an electrically insulative material disposed between the conductive member and the inner surface of the body, wherein separation between the sheath and the inner surface of the body defines an inflation lumen in fluid communication with the inflatable member; and an electrode on the body electrically coupled to the conductive member. - View Dependent Claims (15, 16, 17, 18)
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19. A medical electrical lead comprising:
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an elongate lead body having a proximal end, a distal end, an outer surface, and an inner surface, the body being made from an electrically insulative material and dimensioned such that the distal end can be implanted in a coronary sinus or coronary vein; an inflatable member disposed on the outer surface of the body between the proximal and distal ends, the inflatable member adapted to assume a deflated state and an inflated state in which the inflatable member is adapted to impart a radial force on and frictionally engage a surface of the coronary sinus or coronary vein for fixation of the distal end therein; a conductive member extending from at least the proximal end toward the distal end of the body; an inner insulating layer disposed between the conductive member and the inner surface of the body and extending from the proximal end toward the distal end; an inflation lumen between the inner insulating layer and the inner surface of the body in fluid communication with the inflatable member; a portal extending through the body proximate the proximal end, the portal adapted to facilitate introduction of a fluid into the inflation lumen; a sealing feature coupled to the portal to substantially prevent loss of fluid through the portal; and an electrode on the body electrically coupled to the conductive member.
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Specification