Distributed port bone-piercing cathode for electrically stimulat

Details Distributed port bone-piercing cathode for electrically stimulat Distributed port bone-piercing cathode for electrically stimulat

1981-11-10

1984-04-17

Cohen, Lee S.

Surgery

Truss

Pad

128419F, A61N 104

Patent

active

044428464

ABSTRACT:
Disclosed is an improved bone-piercing cathode for providing electrical stimulation of osteogenesis at a plurality of locations. A conventional bone-piercing cathode is modified by adding a number of "ports" extending through the insulative covering to expose the cathode permitting a flow of osteogenesis stimulating current therethrough. In a preferred embodiment, seven ports are spaced three on one side and four on the other of a conventional bone-piercing cathode which is inserted into the fracture site. Sufficient current is supplied to the cathode in order to insure that each port as well as the insulation-bare wire junction can supply 20 microamperes of osteogenesis stimulating current into the body tissues. This permits bone growth stimulation adjacent a plurality of sites on the cathode.

REFERENCES:
patent: 3842841 (1974-10-01), Brighton et al.
patent: 3918440 (1975-11-01), Kraus
Zimmer USA, Literature No. B-2360-1, 1979.
Brighton et al, "Electrically Induced Osteogenesis . . . ", 24th Annual ORS, Dallas, Texas, Feb. 21-23, 1978, p. 30.

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