Cryosurgical instrument
US4146030A · kind A · utility
22Cited by
7References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 27, 1976 |
| Grant date | Mar 27, 1979 |
| Priority date | — |
| Expiry date | Dec 27, 1996 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2018/00041
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An improved defrostable cryosurgical instrument has a unitary in-line valve assembly that permits the assembly to be contained right in the instrument itself without making the instrument unduly large, heavy or upsetting its balance. By a fingertip control right in the instrument itself, the valve assembly can be controlled to route refrigerant through the instrument's tip to operate the instrument in a freeze mode, a defrost mode and to turn the instrument off, while simultaneously depressurizing the tip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.