Method and apparatus for sterilization

Details Method and apparatus for sterilization Method and apparatus for sterilization

1976-04-29

1978-08-01

Michell, Robert W.

Surgery

Truss

Pad

12830318, A61B 1736

Patent

active

041036883

ABSTRACT:
A method and apparatus for sterilization wherein a flexible, non-resilient, filamentar electrode having an exposed cauterizing tip at one end thereof, and having a thin, dielectric, lubricous covering insulating the electrode up to the exposed tip, is inserted into a severed vas deferens. The electrode insertion is continued until the tip has been located a predetermined distance into the vas. This distance is less than the covering length so that the tip is contiguous with the inner vas walls but the remainder of the electrode is completely insulated therefrom. A second electrode is placed in electrical contact with the patient's body. A radio frequency (r.f.) energy source is applied to the other electrode end to cause r.f. energy flow from the tip to the inner vas wall. The tip is then withdrawn at a predetermined rate while applying r.f. energy to the electrode to thereby cauterize the inner walls which join together in permanent sperm-sealing relation.

REFERENCES:
patent: 2102270 (1937-12-01), Hyams
patent: 2110735 (1938-03-01), Marton
patent: 2700975 (1955-02-01), Hopfinger et al.
patent: 3532095 (1970-10-01), Miller
patent: 3645265 (1972-02-01), Majzlin
patent: 3651812 (1972-03-01), Samuels
patent: 3858586 (1975-01-01), Lessen
patent: 4034762 (1977-07-01), Cosens et al.
Decker et al., "An Electrocautery Inst. . . . for Sterilization", Instrument Society of America, pp. 5-10, 1973.
Schmidt et al., "Vas Cautery; Battery Powered Inst. for Vasectomy", Urology, May 1974, vol. 3, No. 5, pp. 604-605.

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