JP2012045327A5 - - Google Patents

Description

Similarly, in order to achieve the object, an invention according to claim 13 includes an endoscope main body including an operation portion and a rigid insertion portion connected to a distal end portion of the operation portion, and the inner endoscopic a the observation window cleaning method insertion portion cleaning the insertion portion distal end surface formed observation window of the rigid endoscope having a sheath that is inserted in the body, the fluid tube to supply the wash solution There is provided an observation window cleaning method in which cleaning liquid is sprayed and cleaned so that directions of water flows of the cleaning liquid ejected from a plurality of cleaning liquid spouts connected to a path do not intersect each other on the tip surface.

Claims (14)

In an endoscope main body having an operation portion and a rigid insertion portion connected to a distal end portion of the operation portion, and a rigid endoscope having a sheath into which the insertion portion of the endoscope main body is inserted,
A fluid conduit constituted by a gap between the insertion portion inserted into the sheath and the inner wall of the sheath;
A plurality of cleaning liquid spouts connected to the fluid conduit, receiving a supply of cleaning fluid from the fluid conduit, and ejecting the cleaning fluid onto the distal end surface of the insertion portion distal end;
The direction of the plurality of cleaning liquid jets is arranged so that the direction of the water flow of the cleaning liquid ejected from each of the plurality of cleaning liquid jets does not intersect with each other on the tip surface. Endoscope.   The plurality of cleaning liquid outlets include at least a first outlet and a second outlet, and the first outlet is the first outlet and the second outlet on the tip surface. And an opening for ejecting the cleaning liquid toward the first region divided by a straight line connecting the first and second outlets on the tip surface. 2. The rigid endoscope according to claim 1, further comprising an opening that ejects the cleaning liquid toward a second region different from the first region divided by a straight line connecting the ejection port. 3.   The plurality of cleaning liquid spouts include at least two adjacent cleaning liquid spouts arranged so that the directions of water flow of the cleaning liquid spouted are opposite to each other. The rigid endoscope according to 1.   The plurality of cleaning liquid spouts include at least a cleaning liquid spout that spouts the cleaning liquid toward the observation window formed on the front end surface, and a cleaning liquid that spouts the cleaning liquid toward the illumination window formed on the front end surface. The rigid endoscope according to any one of claims 1 to 3, further comprising a spout.   The fluid pipe is configured to supply the cleaning liquid from a pipe communicating with a water supply tank in which the cleaning liquid is stored and a pipe formed in the insertion portion through an ejection hole opened in a peripheral surface of the insertion portion. The rigid endoscope according to any one of claims 1 to 4, wherein the rigid endoscope is received.   The rigid endoscope according to claim 1, wherein the cleaning liquid ejection port is provided on a distal end side of the sheath.   The rigid endoscope according to claim 1, wherein the cleaning liquid ejection port is provided on a distal end surface of the insertion portion.   The cleaning liquid spout is a plurality of grooves formed on a surface of the flange portion facing the distal end surface of the insertion portion provided to protrude toward the inner diameter side of the distal end portion of the sheath. Item 7. The rigid endoscope according to Item 6.   The cleaning liquid spout is a plurality of grooves formed in an O-ring provided on a side of the flange portion that is provided on the distal end portion of the sheath so as to protrude toward the inner diameter side and that faces the distal end surface of the insertion portion. The rigid endoscope according to claim 6, wherein the rigid endoscope is provided.   The rigid endoscope according to claim 7, wherein the cleaning liquid ejection port is a plurality of grooves formed in a wall-shaped convex portion formed in a peripheral end portion of a distal end surface of the insertion portion.   The cleaning liquid spout is a plurality of O-rings provided at a peripheral end portion of the distal end surface of the insertion portion, facing a flange portion provided to protrude toward the inner diameter side at the distal end portion of the sheath. The rigid endoscope according to claim 7, wherein the rigid endoscope is a groove. The rigid endoscope according to any one of claims 8 to 11, wherein the groove has a smaller cross-sectional area toward the cleaning liquid ejection side. Endoscope body having an operation part and a rigid insertion part connected to the distal end of the operation part, and the insertion of the rigid endoscope having a sheath into which the insertion part of the endoscope body is inserted An observation window cleaning method for cleaning an observation window formed on a tip surface of a part,
Wherein the direction of flow of the cleaning liquid ejected from the cleaning liquid ejection port for connection to a fluid conduit for supplying wash solution is washed with jetted cleaning liquid so as not to cross each other on the front end surface Observation window cleaning method.   The cleaning liquid is sprayed and cleaned such that the flow direction of the cleaning liquid sprayed from the cleaning liquid spout adjacent to the plurality of cleaning liquid spouts is opposite to each other. Observation window cleaning method.