Method and apparatus for cryosurgery
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United States of America Patent
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Sep 7, 2004
Issued Date -
N/A
app pub date -
Mar 16, 2000
filing date -
Jun 24, 1996
priority date (Note) -
Expired
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Abstract
The present invention pertains to an apparatus for cryosurgery. The apparatus comprises a cryoneedle having a diameter less than 3.2 mm. The apparatus is also comprised of a thermal insulation shell disposed about a portion of the cryoneedle for reduction of heat transfer from surrounding tissues or freezing prevention of surrounding tissues during application of the cryoneedle with the shell. The cryoneedle and shell are configured for insertion into a body of a patient. The present invention pertains to a method for freezing tissues. The method comprises the steps of bringing into contact a cryoneedle having a diameter of less than 3.2 mm with a patient's body. Next, there is the step of flowing the cryofluid through the cryoneedle.
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