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Endoscope

An endoscope and insertion part technology, applied in the field of endoscope, can solve the problem of difficulty in taking a clear image of a subject, and achieve the effect of sufficient cleaning

Active Publication Date: 2021-03-26
HOYA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, if dirt, etc. adhere to the observation optical system, it will be difficult to take a clear image of the subject

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0033] figure 1 It is an external view of the endoscope 10 according to Embodiment 1 of the present invention. The endoscope 10 according to the present embodiment has an insertion unit 14 , an operation unit 20 , a universal cord 25 , and a connector unit 24 . The operation part 20 has a button 201 and a bending knob 21 for receiving user's operation, and a channel inlet 22 provided on a substantially cylindrical housing 205 . A forceps plug 23 having an insertion port for inserting a treatment tool or the like is attached to the channel entrance 22 .

[0034] The insertion unit 14 is inserted into the body of the subject. The insertion portion 14 is elongated and has a front end portion 13 , a curved portion 12 , and a flexible portion 11 sequentially from one end of the front end. The other end of the insertion part 14 is connected to the operation part 20 via the bending stop part 16 . The bending part 12 is bent in response to the operation of the bending knob 21 . T...

Embodiment approach 2

[0063] Figure 7 It is a diagram showing the air supply and water supply nozzle 140 of the endoscope 10 according to Embodiment 2 of the present invention. Figure 7 A is a perspective view showing the appearance of the air and water supply nozzle 140, Figure 7 B is along Figure 7 A cross-sectional view taken along line B-B of A, Figure 7 C is from Figure 7 The figure viewed in the direction of the arrow in B. exist Figure 7 In A, the part inserted into the concave part provided on the front end surface 131 is indicated by a single-dot chain line, and in Figure 7 In B, the front end surface 131 is indicated by a dotted line.

[0064] The air supply and water supply nozzle 140 according to Embodiment 2 of the present invention has five injection ports 141 . Each exit port 141 is disc-shaped. Five outlets 141 are arranged side by side in a row, and the directions of each outlet 141 are different.

[0065] The air and water supply nozzle 140 has a cylindrical porti...

Embodiment approach 3

[0072] Figure 8It is a diagram showing the air supply and water supply nozzle 140B of the endoscope 10 according to Embodiment 3 of the present invention. Figure 8 A is a perspective view showing the appearance of the air and water supply nozzle 140B, Figure 8 B is a side view of the air and water supply nozzle 140B, Figure 8 C is a diagram showing a state in which the air supply and water supply nozzle 140B is attached to the front end portion 13a. exist Figure 8 A and Figure 8 In B, the portion inserted into the concave portion provided on the front end surface 131 is indicated by a dashed-dotted line, and the front end surface 131 is indicated by a dotted line.

[0073] The air and water supply nozzle 140B in the endoscope 10 according to Embodiment 3 of the present invention has a semi-cylindrical portion 146 inserted into a recess provided on the front end surface 131 , and one open end of the semi-cylindrical portion 146 is covered by a cover portion 148 . clo...

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PUM

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Abstract

Provided is an endoscope (10) having a protruding observation-optical system at the end of an insertion part, wherein: the endoscope comprises an air / water blowing nozzle (140) for jetting a washing fluid toward the observation-optical system; and the air / water blowing nozzle (140) includes a plurality of emission ports (141) from which the fluid is emitted in directions which do not mutually cross.

Description

technical field [0001] The present invention relates to an endoscope having a convex observation optical system at the tip of an insertion portion inserted into a body. Background technique [0002] Conventionally, in an endoscope, an observation optical system for imaging a subject is provided at the tip of an insertion portion inserted into the body. The surface of the observation optical system here is prone to dirt such as mucus, blood, and residue. In this way, if dirt or the like adheres to the observation optical system, it will be difficult to take a clear image of the subject. [0003] In contrast, Patent Document 1 discloses an endoscope that sprays a fluid toward an inclined surface around a convex lens from obliquely above to spread the fluid over the entire convex lens. [0004] Patent Document 2 discloses a lens cleaning sheath for an endoscope that cleans the entire lens with a wall surface surrounding the lens, compared to a lens with a larger diameter. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B23/24A61B1/00A61B1/12
CPCA61B1/12G02B23/24A61B1/00091A61B1/05A61B1/125
Inventor 渡边俊贵
Owner HOYA CORP