Modular pulsed pressure device for the transport of liquid cryogen to a cryoprobe
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United States of America Patent
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Apr 23, 2024
Grant Date -
May 7, 2020
app pub date -
Nov 18, 2019
filing date -
Sep 3, 2008
priority date (Note) -
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Abstract
A cryogenic medical device for delivery of subcooled liquid cryogen to various configurations of cryoprobes is designed for the treatment of damaged, diseased, cancerous or other unwanted tissues. The device is a closed or semi-closed system in which the liquid cryogen is contained in both the supply and return stages. The device is capable of generating cryogen to a supercritical state and may be utilized in any rapid cooling systems. As designed, the device comprises a number of parts including a vacuum insulated outer dewar, submersible cryogen pump, baffled linear heat exchanger, multiple pressurization cartridges, a return chamber, and a series of valves to control the flow of the liquid cryogen. The cryogenic medical device promotes the subcooling to any external cryogenic instrument.
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