Surgery: light – thermal – and electrical application – Light – thermal – and electrical application – Electrical energy applicator
Patent
1991-12-06
1993-11-16
Kamm, William E.
Surgery: light, thermal, and electrical application
Light, thermal, and electrical application
Electrical energy applicator
A61N 105
Patent
active
052614174
ABSTRACT:
A cardiac pacemaker lead wherein the helical fixation element and its pointed tip extend beyond the distal end of the insulating sheath for the conductor during implantation into the heart of a patient. In order to prevent damage to tissue during advancement of the fixation element and its tip through blood vessels and into the heart, the tip and preferably a portion of the adjacent convolution of the fixation element are confined in a deformable jacket in the course of the implanting step. The jacket is thereupon extracted by a length of wire or cord, either along the external surface of the sheath or through the axial passageway of the conductor, when the implanting step is completed. The jacket can be made of flexible sheet material or it can consist of closely adjacent convolutions one of which is of one piece with the wire or cord.
REFERENCES:
patent: 4311153 (1982-01-01), Smits
patent: 4799499 (1989-01-01), Bisping
patent: 4819662 (1989-04-01), Heil, Jr. et al.
patent: 4886065 (1989-12-01), Collins, Jr.
patent: 5002067 (1991-03-01), Berthelsen et al.
Kamm William E.
Kontler Peter K.
Schaetzle Kennedy J.
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