Implantable endocardial lead with fixation device retractable by

Details Implantable endocardial lead with fixation device retractable by Implantable endocardial lead with fixation device retractable by

1989-05-12

1990-05-15

Cohen, Lee S.

Surgery

Truss

Pad

128786, A61N 105

Patent

active

049248812

ABSTRACT:
An implantable endocardial lead with retractable fixation device. The fixation device comprises a sharpened helix which can be repeatedly both retracted within a distal end of the lead and displaced outside the lead. A threaded stylet passes through a lumen from a proximal end of the lead to the distal end of the lead, where the threaded stylet is screwed into a piston supporting the helix. When the helix is in an exposed position, torque can be transmitted from the proximal end of the lead through the distal end to the piston and thence to the helix to screw the helix into the endocardial tissue.

REFERENCES:
patent: 3754555 (1973-08-01), Schmitt
patent: 4280512 (1981-07-01), Karr et al.
patent: 4475560 (1984-10-01), Tarjan et al.
patent: 4624266 (1986-11-01), Kane
patent: 4649938 (1987-03-01), McArthur

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