Sheath device for endoscope

Details Sheath device for endoscope Sheath device for endoscope

1990-07-02

1991-02-12

Grieb, William H.

Surgery

Truss

Perineal

A61B 100

Patent

active

049915649

ABSTRACT:
A sheath device for an endoscope comprises a sheath which is inflatable with a gas that is pumped into the inside of the sheath to allow an insert tube of the endoscope to be covered. A sheath cover, formed in the shape of a tube, surrounds the sheath with a space left therebetween to control overinflation of the sheath. A portion of the sheath cover, that surrounds the distal end portion of the sheath, is tapered toward the distal end of the sheath cover. A gas supply passage is provided for supplying a gas into the sheath to inflate it, and a gas pressure control device is provided with a bleeder which communicates with the gas supply passage and opens upwardly to the atmosphere. A ball valve is placed on the bleeder from the upper side thereof to close it.

REFERENCES:
patent: 4646722 (1987-03-01), Silverstein et al.
patent: 4721097 (1988-01-01), D'Amelio
patent: 4741326 (1988-05-01), Sidall et al.
patent: 4771766 (1988-09-01), Aoshiro et al.
patent: 4807593 (1989-02-01), Ito
patent: 4809678 (1989-03-01), Klein
patent: 4815450 (1989-03-01), Patel
patent: 4869238 (1989-09-01), Opie
patent: 4878485 (1989-11-01), Adair

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