Drainage apparatus with vacuum control

Details Drainage apparatus with vacuum control Drainage apparatus with vacuum control

1982-06-08

1984-06-19

Rosenbaum, C. Fred

Surgery

Means and methods for collecting body fluids or waste material

Aspiration collection container or trap

604321, A61M 100

Patent

active

044551410

ABSTRACT:
A drainage apparatus has a collection chamber connected to the pleural cavity of a patient with a vacuum pump connected through a water seal chamber to the collection chamber. A pressure regulating chamber maintains the negative pressure created by the vacuum pump in the water seal chamber at a desired negative pressure. When there is an increase in negative pressure within the pleural cavity of the patient, atmospheric pressure is transmitted through a liquid at a selected level in an excess negativity chamber to the collection chamber to reduce the negative pressure in the collection chamber and the pleural cavity of the patient connected thereto to a selected maximum above the negative pressure maintained in the collection chamber by the vacuum pump and regulated by the pressure regulating chamber.

REFERENCES:
patent: 3861390 (1975-01-01), Schachet
patent: 4018224 (1977-04-01), Kurtz et al.
patent: 4261362 (1981-04-01), Kurtz et al.
patent: 4289158 (1981-09-01), Nehring
patent: 4324244 (1982-04-01), Kurtz et al.

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