EP0055393A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
An endoscope with an air-liquid suction device
Assignee: Olympus Corp
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Filing: 1981-11-24
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Granted: —
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Expires: 2001-11-24
Abstract
Abstract An endoscope comprises an air-liquid selector valve and a suction control valve attached to a control section of the endoscope, a common tube extending through an insertion section, having one end connected with the suction control valve and the other end opened at the distal end portion of the insertion section of the endoscope, a connecting tube for connecting the suction control valve and the air-liquid selector valve. The air-liquid selector valve has a feed-air port, a feed-liquid port, and a piston-cylinder for selectively connecting the ports with the connecting tube, and the suction control valve has a suction port and a piston-cylinder for selectively connecting the suction port and the connecting tube with the common tube.
Inventors
- 👤 Yasuhiro Ueda
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 20:06
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/00064; A61B1/00066; A61B1/00068; A61B1/12
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
156 words
An endoscope comprising: an insertion section (3) including a proximal end and a distal end;portion; a control section (2) connected with the proximal end of said insertion section (3); and an air-liquid selector valve (8) and a suction control valve (9) attached to said control section, characterized by comprising: a common tube (26) extending through said insertion section, having one end connected with said suction control valve (9) and the other end opened at the distal end portion of said insertion section; and connecting means (18) for connecting said suction control valve (9) and said air-liquid selector valve (8), said air-liquid selector valve (8) having a feed-air port, a feed-liquid port, and selector means (10, 1) for selectively connecting said ports with said connecting means (18), and said suction control valve (9) having a suction port and selector means (19, 20) for selectively connecting said suction port and said connecting means (18) with said common tube.
Claim 2
Dependent Claim
156 words
An endoscope comprising: an insertion section (3) including a proximal end and a distal end;portion; a control section (2) connected with the proximal end of said insertion section (3); and an air-liquid selector valve (8) and a suction control valve (9) attached to said control section, characterized by comprising: a common tube (26) extending through said insertion section, having one end connected with said suction control valve (9) and the other end opened at the distal end portion of said insertion section; and connecting means (18) for connecting said suction control valve (9) and said air-liquid selector valve (8), said air-liquid selector valve (8) having a feed-air port, a feed-liquid port, and selector means (10, 1) for selectively connecting said ports with said connecting means (18), and said suction control valve (9) having a suction port and selector means (19, 20) for selectively connecting said suction port and said connecting means (18) with said common tube.
Claim 3
Dependent Claim
122 words
An endoscope according to claim 1, wherein said air-liquid selector valve (8) includes a first cylinder (10) fixed to said control section (12) and having said feed-air and -liquid ports formed therein, and a first piston (11) slidably inserted in said first cylinder and constituting said selector means, said suction control valve (9) includes a second cylinder (19) fixed to said control section and having said suction port formed therein, and a second piston (20) slidably inserted in said second cylinder and constituting said-selector means, said common tube (26) being connected at one end thereof with said second cylinder, and said connecting means includes a connecting tube (18) with one and the other end connected with said first and second cylinders, respectively.
Claim 4
Dependent Claim
108 words
An endoscope according to claim 2, wherein said first cylinder (10) is a cylinder with one end opened and the other end closed, said feed-air port being located nearer to said other end of said first cylinder than said one end of said connecting tube is, and said feed-liquid port being located nearer to said one end of said first cylinder than said one end of said connecting tube is, and said first piston (11) can slide between an air feed position where said connecting tube is connected with said feed-air port and a liquid feed position where said connecting tube (18) is connected with said feed-liquid port.
Claim 5
Dependent Claim
42 words
An endoscope according to claim 3, wherein said first piston (11) has an air discharge hole (14) connecting the interior of said first cylinder with the open air, and a first communication groove (15) connecting said feed-air port and said connecting tube.
Claim 6
Dependent Claim
26 words
An endoscope according to claim 4, wherein said air-liquid selector valve (8) includes urging means (13) for keeping said first piston in said air feed position.
Claim 7
Dependent Claim
111 words
An endoscope according to claim 2, wherein said second cylinder (19) is a cylinder with one end opened and the other end closed, said other end of said connecting tube being located nearer to said other end of said second cylinder than said one end of said common tube is, and said suction port. being located nearer to said one end of said second cylinder than said one end of said common tube is, and said second piston (20) can slide between an air or liquid feed-position where said common tube is connected with said connecting tube and a suction position where said common tube is connected with said suction port.
Claim 8
Dependent Claim
39 words
An endoscope according to claim 6, wherein said second piston (20) has an air inlet hole (24) connecting said suction port with the open air, and a second communication groove (23) connecting said suction port and said common tube.
Claim 9
Dependent Claim
28 words
An endoscope according to claim 7, wherein said suction control valve (9) includes urging means (22) for keeping said second piston in said air or liquid feed position.
References Cited (Backward Citations)
US3730645A
Cited
US3903877A
Cited
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