Bearing coupling for enabling the tip of a cryosurgical instrument to be rotated independently of inlet and exhaust tubes
US4206760A · kind A · utility
21Cited by
4References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 30, 1978 |
| Grant date | Jun 10, 1980 |
| Priority date | — |
| Expiry date | Jun 30, 1998 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B9/02
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A cryosurgical instrument having a tip which is cooled by the Joule-Thomson expansion of a pressurized gas. The gas is conveyed to the tip by an inlet tube and exhausts through an exhaust tube connected to the rear of a fitting. The tip is connected to the forward portion of the fitting. The rear and forward portions of the fitting are rotatably connected by a bearing coupling which enables the tip to be rotated independent of the inlet and exhaust tubes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.