Noise damping system for an automatic blood pressure gauge

Details Noise damping system for an automatic blood pressure gauge Noise damping system for an automatic blood pressure gauge

1992-01-21

1994-02-15

Cohen, Lee S.

Surgery

Truss

Pad

128680, 128681, A61B 500

Patent

active

052857913

ABSTRACT:
A noise damping system for use in connection with an automatic blood pressure measuring device. The system includes a manifold divided into two expansion chambers in fluid communication with one another by way of a chamber port. The pressure waves and acoustic noise generated by a pump and modulated valves are attenuated by expanding in one chamber against a resistance caused by the chamber port and by expansion in the second chamber against a resistance caused by a manifold inlet/outlet port leading to the ambient environment.

REFERENCES:
patent: 4417587 (1983-11-01), Ichinomiya et al.
patent: 4627440 (1986-12-01), Ramsey et al.
patent: 4706684 (1987-11-01), Sorensen et al.
patent: 4938227 (1990-07-01), Niwa et al.
patent: 5092338 (1992-03-01), Ide et al.
patent: 5099851 (1992-03-01), Hata et al.
patent: 5143077 (1992-09-01), Kobayashi

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