Tip hood member

Abstract

In the present invention, a distal hood component 20 is detachably provided at the distal end 11 of an insertion portion 10 of an endoscope 1. The distal hood component 20 is formed from a soft, elastic soft material. The distal hood component 20 includes a protrusion 21 protruding from the distal end 11 and an endoscope fixation portion 22 into which the distal end 11 is fitted. Convex portions 24 and 24 and concave portions 23 and 23 are provided on the protrusion 21. The shapes of the convex portions 24 and 24 and concave portions 23 and 23 are adjusted in order that the convex portions 24 and 24 of the protrusion 21 are deformed by a force of 0.29 Mpa or less applied from the end of the protrusion 21.

Description

technical field [0001] The present invention relates to a distal end cover member provided at a distal end portion of an insertion portion of an endoscope. Background technique [0002] Conventionally, as an example of an endoscope device used for surgery, an observation optical system, a light guide, an air / water delivery port, and a suction port are provided at the distal end of the insertion portion of the endoscope. In such an endoscope device, light is irradiated from a light guide to a subject such as biological tissue, the subject irradiated by the light is recognized through the objective lens, and air or water or water sent from the air / water delivery port is sucked in through the suction port. other substances. [0003] Furthermore, as an endoscope apparatus, in order to ensure the closest distance between the observation window of the observation optical system and the subject, a cover is provided at the distal end of the insertion portion of the endoscope. [0...

AI Technical Summary

Problems solved by technology

[0006] However, in the endoscope described in Japanese Patent Application Laid-Open No. 2001-224550, the cover is substantially cylindrical and difficult to deform. Therefore, when force is applied from the distal end side of the cover, the force is concentrated on the protruding part of the cover or toward the In order to prevent the damage of the cover caused by such force on the mounting part of the endoscope, the material of the cover must be a highly durable and expensive material

In addition, in order to prevent the cover from deviating or falling off from the mounting portion of the endoscope due to such force, the structure of mounting the cover on the mounting portion of the endoscope is complicated, and it is difficult to place the cover when repairing or maintaining the endoscope. Questions such as removal

[0007] In the technique described in Japanese Patent Application Laid-Open No. 59-93413, a cutout is provided on a part of the cover, and the cover deforms in response to a force applied from the outer peripheral direction of the cover. Deformation due to the force applied to the tip side of the head, the same problem as the technology described in Japanese Patent Laid-Open No. 2001-224550

[0008] In addition, if the strength of the cover is increased, the operator must be careful not to cause discomfort to the patient when inserting it into the body cavity.

However, since the force of deformation of the cover due to the force from the tip side of the cover is not considered at all, there is still a possibility that the patient may feel uncomfortable.

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