Outside-of-thorax type negative pressure artificial respirator
US5101808A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 23, 1990 |
| Grant date | Apr 7, 1992 |
| Priority date | — |
| Expiry date | Aug 23, 2010 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61H31/02
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An artificial respirator includes an atomospheric opening, a corset for enclosing a patient's thorax, an inspiration tube connected at one end thereof to the corset, a suction pump, a switching device for connecting the other end of the inspiration tube to either the suction pump or to the atmospheric opening so as to change the pressure within the corset between a negative and an atmospheric pressure, thereby providing artificial respiration to the patient. The artificial respirator further includes a device for varying the time constant of the change between the negative and atmospheric pressure within the corset so as to provide a smooth change between the pressures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.