Surgery – Instruments – Cyrogenic application
Patent
1997-09-25
1999-05-04
Leubecker, John P.
Surgery
Instruments
Cyrogenic application
606 27, 606 29, A61B 1736
Patent
active
058998977
ABSTRACT:
The system includes a mechanism for freezing tissue in a patient. Additionally, the system includes a mechanism for heating other tissue near the tissue being frozen by the freezing mechanism such that essentially only desired region is frozen by the freezing mechanism and heat from the heating mechanism prevents the other tissue from being frozen. The heating mechanism is disposed adjacent to but separate and apart from the freezing mechanism. Alternatively, the mechanism for heating can be used with tissue already frozen by the freezing mechanism. A method for performing cryosurgery on a patient. The method includes the steps of inserting a cryoprobe into a patient. Next, there is the step of placing a cryoheater in contact with the patient adjacent the cryoprobe. Then, there is the step of activating the cryoprobe and the cryoheater so the cryoprobe freezes desired tissue in the patient and the cryoheater heats other tissue around the desired tissue so the other tissue is not frozen by the cryoprobe. Alternatively, there can be the step of activating the cryoheater after the cryoprobe has frozen the desired tissue to thaw the frozen tissue.
REFERENCES:
patent: 3910277 (1975-10-01), Zimmer
patent: 4719919 (1988-01-01), Marchowsky et al.
patent: 4947842 (1990-08-01), Marchowsky et al.
patent: 4989601 (1991-02-01), Marchosky et al.
patent: 5324286 (1994-06-01), Fowle
Julian Thomas Benjamin
Rabin Yoed
Wolmark Norman
Allegheny-Singer Research Institute
Gibson Roy
Leubecker John P.
Schwartz Ansel M.
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