Cryosurgical instrument

Details Cryosurgical instrument Cryosurgical instrument

1976-12-27

1979-03-27

Cohen, Lee S.

Surgery

Truss

Pad

62293, A61B 1736

Patent

active

041460308

ABSTRACT:
An improved defrostable cryosurgical instrument has a unitary in-line valve assembly that permits the assembly to be contained right in the instrument itself without making the instrument unduly large, heavy or upsetting its balance. By a fingertip control right in the instrument itself, the valve assembly can be controlled to route refrigerant through the instrument's tip to operate the instrument in a freeze mode, a defrost mode and to turn the instrument off, while simultaneously depressurizing the tip.

REFERENCES:
patent: 3512531 (1970-05-01), Crump et al.
patent: 3536075 (1970-10-01), Thomas, Jr.
patent: 3548829 (1970-12-01), Reynolds et al.
patent: 3575176 (1971-04-01), Crump et al.
patent: 3696813 (1972-10-01), Wallach
patent: 3913581 (1975-10-01), Ritson et al.
patent: 3993075 (1976-11-01), Lisenbee

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