Coaxial service kit

Details Coaxial service kit Coaxial service kit

1981-03-30

1983-06-14

Cohen, Lee S.

Surgery

Truss

Pad

128419P, 339177R, A61N 104

Patent

active

043877273

ABSTRACT:
A service kit for splicing body implantable leads having inner and outer coaxially-arranged coil wire conductors insulated from one another. A conductive pin having a distal portion with an outside diameter less than the inside diameter of the inner coil has a barbed tip that is screwed into the inner conductor coil. A shoulder portion of the conductive pin having a larger diameter bears against and retracts the inner coil with respect to the outer coil as the distal portion is screwed into the coil lumen. An insulating sleeve over the shoulder portion assures that the conductive pin does not contact the outer conductor coil. An adaptor housing physically holds the end of the coaxial lead being spliced, the conductive pin and the insulating sleeve. A first set screw through the adapter housing contacts the conductive pin allowing electrical contact thereto. A second set screw through the adapter housing has a sharpened pointed tip by which the outer insulation of the lead is pierced and contact is sustained with the outer conductor coil. The first and second set screws are electrically coupled to coiled wire conductors of the service kit. The entire assembly is fabricated from body compatible materials and suitably sealed against the ingress of body fluids to permit repair of chronically implanted leads.

REFERENCES:
patent: 3416533 (1968-12-01), Fisher et al.
patent: 3437091 (1969-04-01), Jerushalmi et al.
"Technical Information-Electrode Pin Replacement Procedure", copyright 1969 by Medtronic, Inc.

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