Nose bag applicator with pinhole checker

Details Nose bag applicator with pinhole checker Nose bag applicator with pinhole checker

1996-02-14

1997-03-25

Williams, Hezron E.

Measuring and testing

With fluid pressure

Dimension, shape, or size

73 40, 600115, 12866206, 604165, 604272, A61B 100, A61B 1000, A61M 500

Patent

active

056146604

ABSTRACT:
A nose bag applicator for wrapping a balloon or a bag-like fluid-tight cover casing of elastic membranous material on a nose end of a rod-like insertion type internal examination instrument such as an ultrasound probe or ultrasound endoscope, the nose bag applicator including a pinhole checker for testing fluid tightness of the balloon or cover casing by the use of a pressure detector. The pressure detector is constituted by a pressure gauge adapted to monitor pressure variations in a hermetically closed space which is formed within a hollow cylindrical body of the nose bag applicator between a piston member and the balloon or cover casing hermetically fitted on a fore distal end portion of the cylindrical body. A pointer needle on the pressure gauge is deflected according to a pressure differential between the hermetically closed space and the atmospheric pressure.

REFERENCES:
patent: 4285230 (1981-08-01), Hartness
patent: 4466443 (1984-08-01), Utsugi
patent: 4708014 (1987-11-01), Janitz
patent: 4815470 (1989-03-01), Curtis et al.
patent: 4885930 (1989-12-01), Werner et al.
patent: 5097838 (1992-03-01), Hirooka et al.
patent: 5325846 (1994-07-01), Szabo
patent: 5437644 (1995-08-01), Nobles
patent: 5495748 (1996-03-01), Brede et al.

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