Peritoneal dialysis systems and methods employing a liquid distribution and pump cassette with self-contained air isolation and removal
US5628908A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 9, 1995 |
| Grant date | May 13, 1997 |
| Priority date | — |
| Expiry date | Mar 9, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/12
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Systems and methods for peritoneal dialysis establish flow communication between a patient's peritoneal cavity and a drain through a pump chamber having generally vertically spaced upper and lower regions andt a diaphragm. The systems and methods operate the pump chamber, with the upper and lower regions oriented generally vertically, by applying fluid pressure to the diaphragm. The systems and methods direct liquid to the patient's peritoneal cavity only from the lower region of the pump chamber. In this way, the improved systems and methods collect air in the upper region of the vertically oriented pump chamber, while isolating the patient's peritoneal cavity from air in the pump chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.