Bone growth stimulator

Details Bone growth stimulator Bone growth stimulator

1979-07-20

1982-06-08

Cohen, Lee S.

Surgery

Truss

Pad

128784, A61N 118

Patent

active

043334695

ABSTRACT:
There is disclosed an improved implantable bone growth stimulator having a titanium, bullet-shaped case and pre-stretched helical electrode leads. The leads are sheathed, and the circuitry in the case is potted in silicone elastomer. The shape of the case lends itself to long-bone applications. The potting material is ideal for preventing ionic contamination of the circuit, while the metal case offers the requisite mechanical strength. The shape of the case facilitates removal during an explant procedure, and the pre-stretching of the leads prevents tissue damage at this time. The electrical circuit is a stacked assembly of components without a circuit board, which gives rise to the desired bullet shape of the case.

REFERENCES:
patent: 3082292 (1963-03-01), Gore
patent: 3216424 (1965-11-01), Chardeck
patent: 3376378 (1968-04-01), Bullock
patent: 3659615 (1972-05-01), Enger
patent: 3842841 (1974-10-01), Brighton et al.
patent: 3943936 (1976-03-01), Rasor et al.
patent: 4026304 (1977-05-01), Levy
patent: 4041955 (1977-08-01), Kelly et al.
patent: 4075439 (1978-02-01), Smiley
Levy, "Induced Osteogenesis by Electrical Stimulation", vol. 118, No. 9, pp. 1438-1442, Sep. 1971.

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