Endoscopy

Abstract

Provided is an endoscope comprising a raising base operation lever that can be attached and detached easily.　An endoscope according to the present invention comprises a raising base operation lever (31) that causes the raised angle of a treatment tool raising base, which is for raising a treatment tool provided to the tip end of an insertion part, to be displaced, the raising base operation lever (31) having a linking part (31a) linked to a spinning member (42) which spins around the same axis as a spinning shaft (51) of an angle knob, an engagement member (43) being provided to either the spinning member (42) or the linking part (31a), and the raising base operation lever (31) being linked to the spinning member (42) by engaging with an engagement hole provided to the other thereof.

Description

[Technical Field]

[0001] The present invention relates to an endoscope equipped with an easily detachable elevator operating lever. [Background technology]

[0002] Among endoscopes through which a treatment tool can be inserted, there is known one in which a stand provided at the tip of an insertion section is connected to a stand operation lever of an operation section, and the position of the stand is changed by rotating the stand operation lever, thereby changing the protrusion direction of the treatment tool. Conventionally, the stand operation lever or a bending operation member that bends the insertion section has been fixed to the operation section by a method that requires a tool, such as fastening with a screw, as in Patent Document 1, for example. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2015-104424 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in recent years, endoscopes that can be easily attached to the bending operation member attached to the operation section of the endoscope and that are easy to assemble and disassemble have become popular, and there has been a strong demand for a method that allows the erector operation lever to be easily attached and detached.

[0005] SUMMARY OF THE INVENTION An object of the present invention is to provide an endoscope equipped with an easily detachable elevator operating lever. [Means for solving the problem]

[0006] The present invention solves the above-mentioned problems, and the endoscope of the present invention comprises a plurality of angle knobs for bending the insertion portion, a lock lever for locking or unlocking the rotation of one of the plurality of angle knobs that is located on the main body side of the operation portion, and an elevator operating lever for changing the erection angle of a treatment tool elevator for erecting a treatment tool provided at the tip of the insertion portion, the elevator operating lever having a connecting part that is connected to a rotating member that rotates coaxially with the rotation axis of the angle knob, and an engaging member provided on either the rotating member or the connecting part, which engages with an engaging hole provided on the other to connect to the rotating member.

[0007] When the lock lever is attached, the elevator operating lever is supported between the lock lever and the rotating member, and is preferably detachable by removing the lock lever.

[0008] It is preferable that the engaging member is provided on the rotating member and the engaging hole is provided on the connecting portion.

[0009] The lock lever is preferably disposed closer to the main body side of the operation unit than the angle knobs.

[0010] The plurality of angle knobs are up-down angle knobs that bend the insertion portion in the up-down direction and left-right angle knobs that bend the insertion portion in the left-right direction, and it is preferable that the up-down angle knobs are arranged closer to the main body of the operating unit than the left-right angle knobs, and the lock lever is an up-down lock lever that locks or unlocks the rotation of the up-down angle knobs.

[0011] The up / down angle knob, the left / right angle knob, and the up / down lock lever are preferably detachably attached to the operating portion. [Effects of the Invention]

[0012] According to the present invention, an easily detachable standing stand An endoscope having a control lever can be provided. [Brief explanation of the drawings]

[0013] [Figure 1] 1 is an overall view of an endoscope according to the present invention; [Figure 2] FIG. 2 is an enlarged plan view of an operation unit of the endoscope. [Figure 3] FIG. 10 is a perspective view illustrating a rotation range of a treatment tool protruding from a distal end portion. [Figure 4] FIG. 10 is an exploded view illustrating the platform rotation mechanism. [Figure 5] FIG. 2 is an exploded view illustrating an operation member attached to an operation section of the endoscope. [Figure 6] FIG. 10 is a perspective view illustrating a state in which the elevator operating lever is attached. [Figure 7] FIG. 10 is a partial cross-sectional view showing the elevator operating lever attached. DETAILED DESCRIPTION OF THE INVENTION

[0014] 1, an endoscope 10 has a gripping section 11 that is gripped by an operator, an operation section 12 for performing various operations, an insertion section 13 that is inserted into a subject, and a universal cord 14 that is connected to a connection section 15. An illumination device (not shown) that supplies illumination light to the endoscope 10 and a processor device (not shown) that executes various processes in response to operations of the operation section 12 are connected to the endoscope 10 via the universal cord 14. The insertion section 13 is connected in order from the distal end to the proximal end to a distal end section 13a, a bending section 13b, and a flexible section 13c.

[0015] The endoscope 10 is a side-viewing endoscope such as a duodenoscope, and is provided with a treatment tool insertion port 17 for inserting a treatment tool 18 used for medical procedures such as treatment and examination. The inserted treatment tool 18 passes through an insertion path disposed inside the insertion section 13 from the treatment tool insertion port 17 to the distal end portion 13a, and protrudes from the distal end portion 13a, and is used for various medical procedures.

[0016] As shown in Figure 2, the operation unit 12 has, as bending operation members, an up / down angle knob 21 that bends the bending portion 13b in the up / down direction, a left / right angle knob 22 that bends the bending portion 13b in the left / right direction, and an up / down lock lever 23 and a left / right lock knob 24 that are rotated to lock or unlock the rotation of the angle knob. By rotating the up / down and left / right angle knobs, the bending portion 13b is bent and the distal end portion 13a is directed in the desired direction. To maintain the bent state of the bending portion 13b, the up / down lock lever 23 and the left / right lock knob 24 are rotated as appropriate. A plurality of operation buttons 25 are provided on the outer peripheral surface of the main body 41 of the operation unit 12, and by pressing the operation button 25, the endoscope 10 and the processor device cooperate to execute various processes.

[0017] The operation unit 12 is also provided with a stand operation lever 31. The stand operation lever 31 is connected to a treatment tool stand 32 (hereinafter simply referred to as the stand) provided at the distal end 13a shown in Fig. 3 by a traction wire 47 (see Fig. 4) inserted inside the endoscope 10, and by rotating the stand operation lever 31, the stand rotation mechanism 40 described below changes the stand 32 from a lying position to an erect position. When performing various medical procedures, the treatment tool 18 protrudes from the distal end 13a along the guide surface 32a of the stand 32, and the protruding direction changes according to the change in the position of the stand 32.

[0018] FIG. 4 is a schematic diagram illustrating the platform rotation mechanism 40. The platform rotation mechanism 40 includes a rotating member 42 that rotates around a rotation axis 51, a crank member 45 connected to the rotating member 42, and a slider 46 connected to the crank member 45. The slider 46 is connected to the platform rotation lever 33, which rotates the platform 32, by a pulling wire 47. The crank member 45 converts the rotational motion of the rotating member 42 into the linear motion of the slider 46. The platform rotation lever 33 is connected so that the angle of the platform 32 changes as the platform rotation lever 33 rotates. Therefore, when the platform operation lever 31 is connected to the rotating member 42, rotating the platform operation lever 31 pushes and pulls the pulling wire 47 connected to the rotating member 42, and the position of the platform 32 changes in accordance with the rotation of the platform rotation lever 33. 4, when the stand operating lever 31 is rotated counterclockwise, the pulling wire 47 is pulled, and the stand 32 rotates in the standing posture direction. Note that the stand rotating mechanism 40 may omit the stand rotating lever 33 and directly connect the pulling wire 47 and the stand 32.

[0019] As shown in FIG. 5 , the bending operation members and the elevator operation lever 31 are attached to the main body 41 of the operation unit 12 in the following order from the outside: the left-right lock knob 24, the left-right angle knob 22, the up-down angle knob 21, the up-down lock lever 23, and the elevator operation lever 31, stacked on top of each other around the same rotation shaft 51. When attaching, the elevator operation lever 31 is attached first by inserting the attachment portions (not shown) provided at the center of each bending operation member and the elevator operation lever 31 into the rotation shaft 51, followed by the up-down lock lever 23, the up-down angle knob 21, the left-right angle knob 22, and the left-right lock knob 24, in that order. Once attached to the main body 41, these members rotate independently. The rotating member 42 to which the elevator operation lever 31 is attached is provided with a plurality of engaging members 43 for securing the rotating member 42. The annular operating lever connection portion (connection portion of the present invention) 31a of the stand operating lever 31 has an engagement hole 44 that engages with the engagement member 43, and by engaging these, the stand operating lever 31 is attached to the rotating member 42.

[0020] As shown in Fig. 6, the engagement member 43 is provided so as to protrude from the upper surface of the operation lever connecting portion 31a when the elevator operation lever 31 is attached to the rotating member 42. Fig. 7 is a schematic cross-sectional view of the elevator operation lever 31 attached to the rotating member 42. When only the elevator operation lever 31 is attached (see Fig. 6), the elevator operation lever 31 is not fixed in the vertical direction of the rotating member 42 (the direction of the rotation axis 51). However, when each curved operation member is attached, the upper and lower lock levers 23 are positioned outside the elevator operation lever 31, so the elevator operation lever 31 is supported between the rotating member 42 and the upper and lower lock levers 23.

[0021] In this way, when the erector control lever 31 is attached to each curved operation member, it is supported between the upper / lower lock lever 23 and the rotating member 42, enabling rotation of the erector 32. Furthermore, when disassembling or assembling the operation unit 12 or replacing the erector control lever 31, the erector control lever 31 is not fixed by any member that requires a tool such as a screw, so that the erector control lever 31 can be easily attached or detached by removing each curved operation member.

[0022] 5 and 6, the engaging member 43 is provided with a plurality of cylindrical members, but it may be a rectangular columnar member or have another shape. In this case, it is preferable to provide an engaging hole 44 according to the shape of the engaging member 43. There may be a single engaging member 43, and the operating lever connecting portion 31a and the rotating member 42 may be configured to be engaged and connected by the rotating shaft 51 and the single engaging member 43.

[0023] In the above embodiment, the engaging member 43 is provided on the rotating member 42 and the engaging hole 44 is provided on the operating lever connecting portion 31a, but the engaging member 43 and the engaging hole 44 may be reversed. That is, the engaging hole 44 may be provided on the rotating member 42 and the engaging member 43 may be provided on the operating lever connecting portion 31a. [Explanation of symbols]

[0024] 10 Endoscopy 11 Gripping part 12 Control section 13 Insertion section 13a Tip 13b Curved section 13c flexible Department 14 Universal Code 15 Connection 17 Treatment tool insertion port 18 Treatment tools 21 Up and down angle knob 22 Left and right angle knob 23 Upper and lower lock lever 24 Left and right lock knobs 25 Operation buttons 31 Standing platform operation lever 31a Operating lever connection part 32 Treatment equipment stand (stand) 32a Guide surface 33 Standing platform rotation lever 40 Standing platform rotation mechanism 41 Main body 42 Rotating member 43 Engagement member 44 Engagement hole 45 Crank parts 46 Slider 47 Towing Wire 51 Rotating shaft

Claims

1. a plurality of angle knobs for bending the insertion section; a lock lever that locks or unlocks the rotation of the angle knob that is disposed on the main body side of the operation unit among the plurality of angle knobs; a stand operation lever for varying the angle of a treatment tool stand for raising a treatment tool provided at the distal end of the insertion section, the stand operation lever having a connecting part connected to a rotating member that rotates coaxially with the rotation axis of the angle knob, and an engaging member provided on either the rotating member or the connecting part, which engages with an engaging hole provided on the other, thereby connecting the stand operation lever to the rotating member; An endoscope comprising:

2. 2. The endoscope according to claim 1, wherein the elevator operating lever is supported between the lock lever and the rotating member when the lock lever is attached, and becomes detachable by removing the lock lever.

3. 3. The endoscope according to claim 1, wherein the engaging member is provided on the rotating member, and the engaging hole is provided on the connecting portion.

4. The endoscope according to claim 1 , wherein the lock lever is disposed closer to the main body of the operation unit than the angle knobs.

5. the plurality of angle knobs are vertical angle knobs that bend the insertion portion in a vertical direction and horizontal angle knobs that bend the insertion portion in a horizontal direction, the up-down angle knob is disposed closer to the main body of the operation unit than the left-right angle knob, 5. The endoscope according to claim 1, wherein the lock lever is an up-down lock lever that locks or unlocks the rotation of the up-down angle knob.

6. The endoscope according to claim 5, wherein the up / down angle knob, the left / right angle knob, and the up / down lock lever are detachably attached to the operation portion.

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