Implantable endocardial lead with retractable fixation apparatus

Details Implantable endocardial lead with retractable fixation apparatus Implantable endocardial lead with retractable fixation apparatus

1990-12-21

1992-07-14

Kamm, William E.

Surgery

Truss

Pad

128786, A61N 105

Patent

active

051294044

ABSTRACT:
An implantable endocardial lead with retractable sharpened helix. The piston has a central bore for receiving a specialized stylet. The stylet comprises a flexible wire having an enlarged distal end or tip. An elastomeric sliding sleeve fits over the wire. When the proximal end of the stylet is inserted into the bore in the piston, the wire can be withdrawn slightly, pulling the enlarged tip into the tube, and wedging the tube against the walls of the bore. By manipulating the stylet, the helix can be exposed outside of the lead, or retractable into the lead, as desired.

REFERENCES:
patent: 4217913 (1980-08-01), Dutcher
patent: 5003992 (1991-04-01), Holleman et al.

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