Cryosurgical probe
US3951152A · kind A · utility
58Cited by
4References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 14, 1975 |
| Grant date | Apr 20, 1976 |
| Priority date | — |
| Expiry date | Feb 14, 1995 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B18/02
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A small, self-contained, disposable cryosurgical probe has a pencil-like housing with a refrigerant-containing cartridge in the housing and a hollow tip projecting from the housing. A small diameter capillary tube has one end in the housing opposite the cartridge and its other end extending into the tip with the intervening length of the tube formed into a multi-turn coil. The refrigerant is conducted from the cartridge through the tube to the probe tip and the temperature of the refrigerant is stabilized so as to maintain a substantially uniform mass flow rate of refrigerant through the tube to the tip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.