Valved resuscitation pump having secretion removal means
US5313938A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 15, 1992 |
| Grant date | May 24, 1994 |
| Priority date | — |
| Expiry date | Sep 15, 2012 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M1/63
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A cardiopulmonary resuscitating pump, comprising, a housing having a top wall (20), a bottom wall (21) and a side wall (22) in the form of a bellows which is capable of contracting and expanding under the application and release of an externally applied pressure to contract and expand the volume of a gas chamber (23) within the housing and having a gas inlet (48) through the bottom wall for drawing gas into the gas chamber and a gas outlet (43) through the bottom wall for discharging gas from the gas chamber to an associated oropharyngeal airway, whereby, in use a patient can be subjected to ventilation and external cardiac massage by appropriate operation of the pump whilst situated on the patient's chest. A waste chamber (29) is also provided attached to the bottom wall and communicating, via a waste inlet (52) through the bottom wall, with the associated oropharyngeal airway whereby to suck secretions from the patient whilst cardiac massage and ventilation is occurring and to expel secretions through a waste outlet (47) through the bottom wall. Biasing springs ( 24 and 33) are provided in both the gas and waste chamber to assist in expanding the volume of the chambers upon relea…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.