Body function detection and medical instruments therefor

Details Body function detection and medical instruments therefor Body function detection and medical instruments therefor

1980-03-26

1982-04-13

Kamm, William E.

Surgery

Truss

Pad

A61B 508

Patent

active

043242596

ABSTRACT:
It is proposed that respiration in neonates, and respiration and contractions in woman in advanced pregnancy and labour, be detected and measured by direct reference to change of curvature of the abdominal wall during expansion and contraction thereof. An apparatus for this purpose, an abdominal spherometer, comprises a detector capsule having one wall defined by a resilient diaphragm for engagement with the abdominal wall, the capsule being pneumatically connected to a variable volume compartment operably connected, in turn, to a volume-responsive transducer. The compartment is suitably of similar form to the capsule with the transducer being a capacitor having electrodes respectively located as or on the compartment diaphragm and opposite thereto.

REFERENCES:
patent: 3500826 (1970-03-01), Haire
patent: 3572322 (1971-03-01), Wade
patent: 4122837 (1978-10-01), Leonard

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