Medical electrical lead having temporarily rigid fixation

Details Medical electrical lead having temporarily rigid fixation Medical electrical lead having temporarily rigid fixation

1995-08-23

1998-02-10

Lateef, Marvin M.

Surgery: light, thermal, and electrical application

Light, thermal, and electrical application

Electrical energy applicator

607126, A61N 105

Patent

active

057163910

ABSTRACT:
A medical electrical lead having active fixation which readily flexes within the cardiac tissue through a fixation mechanism which is temporarily rigid. In a preferred embodiment, the medical electrical lead features a fixation helix constructed from an absorbable material, such as mannitol. In an alternate embodiment a medical electrical lead is disclosed which features a fixation mechanism having a multi-layer construction. In that embodiment the fixation mechanism is fashioned of a first, rigid and absorbable, material and a second, readily pliable and nonabsorbable, material. Through such a construction the lead may be fixed in the tissue such that over time the first material is absorbed by the body and the second material is left in position to flexibly fix the lead in place. In one embodiment the second material is conductive and is used to achieve an electrical coupling to the body tissue.

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