Heating and cooling of cryosurgical instrument using a single cryogen
US7938822B1 · kind B1 · utility
46Cited by
221References
15Claims
0Family size
Assignee
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Key dates
| Filing date | May 12, 2010 |
| Grant date | May 10, 2011 |
| Priority date | — |
| Expiry date | May 12, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2018/048
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A cryosurgical system featuring both cooling and heating utilizing a single type of cryogen but from two different sources. The liquid cryogen cools the tip of a cryosurgical instrument in the cryosurgical system, such as a cryoprobe or cryocatheter. The gaseous cryogen is further heated by a heating element, preferably an electrical heating element, supplying the heating needed for the thaw and release parts of the cryo treatment procedure. Thus, the cryosurgical system supports the freeze/thaw cycle of the operation of the cryosurgical instrument.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.