Pumping arrangement for supplying a ventilating apparatus with b

Details Pumping arrangement for supplying a ventilating apparatus with b Pumping arrangement for supplying a ventilating apparatus with b

1989-05-16

1990-05-08

Eickholt, Eugene H.

Surgery

Respiratory method or device

Means for quickly connecting or disconnecting apparatus...

417472, 417360, A62B 904

Patent

active

049229001

ABSTRACT:
The invention is directed to a pumping arrangement for supplying a ventilating apparatus with breathing gas. The pumping arrangement includes a piston which runs in a cylinder and the piston is connected via a coupling with a drive unit for generating the pumping strokes. The coupling engages a motion transmitter in the form of a piston rod. Gas connecting ports for the breathing gas to be pumped open into the inner chamber of the cylinder. The pumping arrangement permits the piston-cylinder unit to be simply removed and to be reinstalled with reliable guidance. An automatic latching occurs such that a release and removal of the piston-cylinder unit from the ventilating apparatus and its uncoupling from the drive unit is possible only in a rest condition and not during operation. For exchanging the piston-cylinder unit, the motion actuator in the form of the piston rod moves through a preparatory stroke having an end position in which the coupling as well as the latching of the piston-cylinder unit with respect to the housing can be actuated.

REFERENCES:
patent: 2302707 (1942-11-01), Mejean
patent: 4157092 (1979-06-01), Fare et al.

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