Patent ID: 7127302
Filing Date: 2006-10-24
Classification: A61N

Abstract:
1. An intracardial electrode lead adapted for connection to a cardiac therapy device, comprising: a distal end, a proximal end, and an elongate electrode lead body, which includes a longitudinally extending helical coil having a lumen suitable for containing a guide wire, and a sheath enclosing the helical coil, wherein the distal end of the electrode lead carries an electrode, electrically connected to a connector at the proximal end of the electrode lead for communication with a medical device, wherein the electrode has an internal surface and an external surface, wherein the distal end of the electrode lead comprises a sleeve having a proximal end and a distal end, which is enclosed by a plurality of distal turns of the helical coil at the sleeve proximal end and contacts a lip seal at the sleeve distal end, wherein the lip seal has a peripheral wall which bears in a sealing relationship against the internal surface of the electrode from a distal end of the lip seal to a proximal end of the lip seal, and wherein the lip seal includes a sealing diaphragm with a central opening that elastically closes a distal mouth opening of the lumen and wherein the sealing diaphragm has a thickness that is less than the extent of the lip seal peripheral wall from its distal end to its proximal end, and wherein the sleeve is also electrically connected to the electrode, and wherein the electrode projects distally beyond the lip seal.