Cauterizing probes for cryosurgery

Details Cauterizing probes for cryosurgery Cauterizing probes for cryosurgery

1978-01-03

1980-05-13

Cohen, Lee S.

Surgery

Truss

Pad

A61B 1736

Patent

active

042023360

ABSTRACT:
A heating coil close to the freezing tip of a cryosurgical probe operates through a highly heat conductive portion of the probe wall so as to cauterize previously frozen tissues. The liquid nitrogen supply is continued long enough to cool the cauterizing surface to body temperature after the heating winding is switched off, after which the probe is withdrawn. An insulating spacer member on the end of the tip prevents unintended freezing of the bladder wall when the instrument is used for an operation on the prostate gland. The use of general anesthesis in such an operation is avoided by the use of the new probe. A probe for cauterizing only, for use after freezing by a conventional cryosurgical probe has the same kind of heater, temperature sensor and insulating tip but is equipped for circulating cooling water rather than cryogenic flow in the cooling space.

REFERENCES:
patent: 3439680 (1969-04-01), Thomas, Jr.
patent: 3507283 (1970-04-01), Thomas, Jr.
patent: 3651812 (1972-03-01), Samuels
patent: 3685518 (1972-08-01), Beverle et al.
patent: 3736937 (1973-06-01), Basiulis
patent: 3902494 (1975-09-01), Haberlen
patent: 3951152 (1976-04-01), Crandell et al.
patent: 3971383 (1976-07-01), Gerven

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