Alternating pressure pads
US6928681B1 · kind B1 · utility
75Cited by
8References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 22, 1998 |
| Grant date | Aug 16, 2005 |
| Priority date | — |
| Expiry date | May 22, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61G2203/34
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An alternating pressure pad comprises at least two sets of inflatable cells, an air supply line to each set, a pump to circulate pressurized air through a circuit including the sets of cells and to return air from the cells to the pump, valve means for alternately causing inflation and deflation of each set, a sensor pad in the circuit through which pressurized air is passed and detecting means for detecting a reduction in air flow through the sensor pad to a level below a predetermined level and for increasing air pressure in the sets of cells to restore the air flow to a level above the predetermined level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.