Surgery – Truss – Perineal
Patent
1985-10-23
1987-09-22
Grieb, William H.
Surgery
Truss
Perineal
A61B 112
Patent
active
046948210
ABSTRACT:
An air feed control device for an endoscope for feeding air into a body cavity, comprises a regulating valve device including therein separate channels for air inflow and air outflow and a vent opening to the atmosphere. The air channels communicate with each other only via a hole which is disposed in the vicinity of the vent opening to the atmosphere so as to prevent the air resistance of the open vent from forcing air into the outlet air pipe and then into the body cavity.
REFERENCES:
patent: 4261343 (1981-04-01), Ouchi et al.
Fuji Photo Optical Co., Ltd.
Grieb William H.
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