Medical device for the transport of subcooled cryogenic fluid through a linear heat exchanger
US10182859B2 · kind B2 · utility
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32References
23Claims
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Key dates
| Filing date | Aug 26, 2009 |
| Grant date | Jan 22, 2019 |
| Priority date | — |
| Expiry date | Sep 9, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2018/0287
- WIPO fieldMedical technology
- WIPO sectorInstruments
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 comprises a number of parts including a vacuum insulated outer dewar, submersible cryogen pump, baffled linear heat exchanger, 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 probe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.