Irrigation system with high flow bypass for use with endoscopic procedure
US5322506A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 29, 1991 |
| Grant date | Jun 21, 1994 |
| Priority date | — |
| Expiry date | Oct 29, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02B2075/025
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An irrigation system for irrigating and pressurizing a body cavity during an endoscopic procedure, such as during arthroscopy, includes a source of irrigation liquid, a pneumatically driven pump for pumping irrigation liquid from the source into the body cavity. The pump develops pulsatile flow and its operation is controlled by a pressure regulator that regulates the pressure of air applied to the pump. The system enables disablement of the pumping function of the pump while permitting gravity flow of irrigation liquid to the body cavity. The pump and associated tubing is inexpensive and adapted for one-time, disposable use. The system includes a pump bypass mode that enables liquid to flow at a high rate as may be needed to maintain pressurization of the body cavity as that which occurs during arthroscopic shaving.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.