Surgery – Truss – Pad
Patent
1987-04-20
1990-05-29
Jaworski, Francis
Surgery
Truss
Pad
A61B 502
Patent
active
049287028
ABSTRACT:
The invention relates to a device for picking off a pressure, particularly of a fluid, and to utilize it either for measuring or for transcodable signals.
It comprises a capsule 1 which is provided with an opening 2 and which is closed by a flexible membrane 4, accessible to the pressure to be picked off, with said capsule 1 containing a non-compressible liquid 5.
It is characterized in that it comprises compressible elastic means, positioned opposite the opening 2 and exerting a calibrated and invariable counter pressure on the non-compressible liquid 5 to assure the automatic and instantaneous returning of the flexible membrane 4 which closes the opening 2.
The elastic compressible means can be formed by an air pocket 7 which may be separated from the opaque non-compressible liquid 5 by a non-compressible transparent liquid 23.
The device is especially adapted to the measuring of arterial blood pressure.
REFERENCES:
patent: 2854968 (1958-10-01), Wright
patent: 3701283 (1972-10-01), Lichfield
patent: 3704708 (1972-12-01), Iberall
patent: 3911902 (1975-10-01), Delpy
patent: 3926179 (1975-12-01), Petzke et al.
patent: 4210029 (1980-07-01), Porter
Taylor, W. B. et al, "A High Resolution Transrectal UTS System", UTS in Med & Biol., vol. 5, 1979, pp. 129-138.
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