Fluid management pump system for surgical procedures
US5810770A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 13, 1996 |
| Grant date | Sep 22, 1998 |
| Priority date | — |
| Expiry date | Dec 13, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/128
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A fluid management pump system (30) for supplying sterile solution to a surgical site. The system includes an inflow tube (42) for supplying sterile solution to the surgical site. The solution is forced through the inflow tube by a pump (40). Fluid is drained from the surgical site in order to maintain the pressure at the site through an outflow tube (44). Both the inflow and outflow tubes are attached to a cassette (52). The cassette is mounted to a control unit (50). Internal to the cassette are pinch valves (54, 56) for controlling fluid flow through, respectively, the inflow and outflow tubes. The open/closed states of the inflow and outflow tubes are controlled by solenoids (58, 60) internal to the control unit that act on the pinch valves. The control unit actuates the solenoids and supplies the energization current to the pump based on operator entered commands and indication that the pressure at the surgical site. A column of air representative of liquid-state fluid pressure at the surgical site is supplied to the control unit through the cassette.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.