Endoscope insertion part steering structure

Abstract

The utility model discloses an endoscope insertion part steering structure which comprises a sheath, the sheath wraps the periphery of the near end of an insertion part and comprises a sheath body and a first connecting part arranged on the side, away from the far end of the insertion part, of the sheath body, and the insertion part is arranged in the first connecting part in a penetrating mode; the first connecting part and the sheath body are coaxially arranged, and a steering groove is formed in the first connecting part; and the handle part is rotationally matched with the sheath and comprises a handle shell and a second connecting part arranged on the side, close to the sheath, of the handle shell, and the second connecting part is limited on the first connecting part and rotationally arranged in the steering groove. The turning structure for the insertion part of the endoscope is simple in structure, convenient to operate and low in cost.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of medical equipment, especially relates to a endoscope insertion part steering structure. BACKGROUND

[0002] An endoscope is a commonly used medical instrument, which is usually composed of an operating part, a bendable part, a light source and a set of lenses. The endoscope enters the human body through the natural orifice of the human body or a small incision made by surgery and directly observes the changes of the relevant parts. The tip of the endoscope is provided with a camera and an illuminating device, and is connected to the bendable part, which can be controlled to bend up and down by the handle to adjust the position of the camera, so as to realize the observation and treatment of different lesion sites. In reality, the endoscope can only bend up and down and cannot observe the position in the left and right directions.

[0003] Chinese patent CN 115453741 A2 discloses a steering mechanism, a driving assembly controls the steering of a snake bone assembly through a steering rope, which has a complex structure, a high cost and a large size. UTILITY MODEL CONTENT

[0004] Based on the above problems, the utility model aims to provide an endoscope insertion part steering structure which can steer the endoscope insertion part, has a simple structure and is easy to operate.

[0005] In order to overcome the shortcomings of the prior art, the utility model provides the technical scheme:

[0006] An endoscope insertion part steering structure comprises:

[0007] A sheath is wrapped around the outer periphery of the proximal end of the insertion part and comprises a sheath body and a first connecting part arranged on the side of the sheath body away from the distal end of the insertion part. The insertion part is arranged in the first connecting part, and the first connecting part and the sheath body are coaxially arranged and form a steering groove.

[0008] A handle part is rotationally connected to the sheath and comprises a handle shell and a second connecting part arranged on the side of the handle shell close to the sheath. The second connecting part is limited on the first connecting part and is rotationally arranged in the steering groove.

[0009] In one embodiment, a steering limiting part is arranged in the steering groove along the radial direction of the first connecting part, and one end of the second connecting part facing the steering groove is provided with a steering boss matched with the steering limiting part.

[0010] In one embodiment, the steering boss is arc-shaped, and the circumferential angle of the steering boss is 180 degrees.

[0011] In one of the embodiments, a sealing ring is arranged between the second connecting part and the steering groove.

[0012] In one of the embodiments, a first limiting groove is arranged on the outer wall of the second connecting part and matched with the sealing ring.

[0013] In one of the embodiments, the second connecting part is limited by the snap spring on the outer periphery of the first connecting part.

[0014] In one of the embodiments, a limiting boss is formed on the end of the second connecting part away from the sheath, the snap spring is arranged in a second limiting groove on the outer wall of the first connecting part and abuts against the limiting boss.

[0015] In one of the embodiments, a protection assembly is detachably arranged in the first connecting part, the insertion part is fixedly connected with the protection assembly, and the steel wire passes through the protection assembly and is connected with the insertion part.

[0016] In one of the embodiments, a positioning boss matched with the protection assembly is arranged on the inner wall of the first connecting part, and the protection assembly is fixed in the first connecting part by a plurality of screws.

[0017] In one of the embodiments, the protection assembly comprises an insertion part sleeve and a steel wire sleeve fixed in the insertion part sleeve.

[0018] Compared with the prior art, the utility model has the advantages of:

[0019] 1. The sheath and the handle part are rotationally matched, the first connecting part connected with the sheath is driven to rotate by rotating the sheath, so as to drive the insertion part in the first connecting part to rotate, thereby realizing the steering of the insertion part, and the structure is simple, the operation is convenient, and the cost is low.

[0020] 2. The steering boss and the steering limiting part are matched, so that the steering adjustment of the insertion part by 90 degrees left and right can be realized.

[0021] 3. The sealing ring is arranged between the second connecting part and the steering groove, so as to realize the sealing effect and have the rotation damping effect, so that the insertion part can be automatically locked after steering, and the stability of the structure is improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, and the drawings in the following description are only some embodiments of the utility model, and for the ordinary skilled in the art, other drawings can be obtained according to these drawings without creative labor.

[0023] Figure 1The utility model discloses an endoscope insertion part steering structure embodiment structure schematic diagram for the utility model;

[0024] Figure 2 The utility model discloses a disassembly structure schematic diagram for the utility model embodiment;

[0025] Figure 3 The utility model discloses a sheath structure schematic diagram in the utility model embodiment;

[0026] Figure 4 For Figure 3 A-A cross section schematic diagram of

[0027] Among them:

[0028] 1, sheath, 1-1, sheath body, 1-2, first connecting part, 1-2a, steering groove, 1-2b, steering limiting part, 1-2c, second limiting groove, 1-2d, positioning boss,

[0029] 2, handle part, 2-1, handle shell, 2-2, second connecting part, 2-2a, first limiting groove, 2-2b, steering boss, 2-2c, limiting boss,

[0030] 3, insertion part,

[0031] 4, sealing ring,

[0032] 5, clamping spring,

[0033] 6, insertion part cover,

[0034] 7, steel wire cover,

[0035] 8, adjust steel wire. Specific embodiments

[0036] The above scheme is further described in combination with specific embodiments. It should be understood that these embodiments are used to illustrate the utility model and do not limit the scope of the utility model. The implementation conditions used in the embodiments can be further adjusted according to the specific conditions of the manufacturer. The implementation conditions not mentioned are usually the conditions in the conventional experiment.

[0037] See Figure 1 And Figure 2 The utility model discloses an endoscope insertion part steering structure, including sheath 1 and handle part 2 that are set up relative to sheath 1 rotation.

[0038] The sheath 1 is covered on the outer periphery of the proximal end of the insertion part 3, comprising a sheath body 1-1 and a first connecting part 1-2 arranged on the side of the sheath body 1-1 away from the distal end of the insertion part 3, the insertion part 3 is arranged in the first connecting part 1-2, the first connecting part 1-2 is coaxially arranged with the sheath body 1-1 and is formed with a turning groove 1-2a, one end of the first connecting part 1-2 is fixed in the sheath body 1-1 and the other end extends out of the sheath body 1-1, so as to be connected with the handle part 2. Wherein, the proximal end refers to the end away from the patient during operation, and the distal end refers to the end close to the patient.

[0039] The handle part 2 comprises a handle shell 2-1 and a second connecting part 2-2 arranged on the side of the handle shell 2-1 close to the sheath 1, the second connecting part 2-2 is limited on the first connecting part 1-1 and is arranged in the turning groove 1-2a, one end of the second connecting part 2-2 is fixed in the handle shell 2-1 and the other end extends out of the handle shell 2-1 to extend into the turning groove 1-2a.

[0040] In order to limit the rotation angle between the sheath 1 and the handle part 2, a turning limiting part 1-2b is arranged in the turning groove 1-2a along the radial direction of the first connecting part 1-2, and a turning boss 2-2b is arranged on the end of the second connecting part 2-1 facing the turning groove 1-2a, which cooperates with the turning limiting part 1-2b, the turning boss 2-2b can rotate in the turning groove 1-2a, and when the turning boss 2-2b abuts against the turning limiting part 1-2b, the rotation is stopped, thereby limiting the angle of rotation.

[0041] In the implementation, the insertion part 3 needs to be adjusted in the range of 90 degrees left and right, therefore, the turning boss 2-2b is arranged in an arc shape, and the circumferential angle of the turning boss 2-2b is 180 degrees, in the initial state, the turning boss 2-2b and the turning limiting part 1-2b are arranged on the opposite sides of the radial direction of the turning groove 1-2a respectively, and then the handle part 2 can rotate in the range of 90 degrees left and right along the turning groove 1-2a.

[0042] In order to further optimize the implementation effect of the utility model, a sealing ring 4 is arranged between the second connecting part 2-2 and the turning groove 1-2a, preferably, an O-shaped sealing ring in the prior art can be used, in order to facilitate the installation of the sealing ring 4, a first limiting groove 2-2a is arranged on the outer wall of the second connecting part 2-2 and cooperates with the sealing ring 4, the arrangement of the sealing ring 4 can play a sealing role and has a rotation damping effect, after the sheath 1 rotates relative to the handle part 2, the self-locking can be realized through the compression of the sealing ring 4, and the stability of the structure is improved.

[0043] In the example, the second connecting part 2-2 is limited on the first connecting part 1-2 by the snap spring 5, specifically, a limiting boss 2-2c is arranged at the end of the second connecting part 2-2 away from the sheath 1, and a second limiting groove 1-2c is arranged on the outer wall of the first connecting part 1-2, the snap spring 5 is arranged in the second limiting groove 1-2c and abuts against the limiting boss 2-2c, and the head end of the first connecting part 1-2 is inserted into the second connecting part 2-1 and then the snap spring 5 is clamped into the second limiting groove 1-2c of the first connecting part 1-2 to limit the second connecting part 2-2.

[0044] In order to facilitate the installation of the insertion part 3 and the adjustment of the bending of the insertion part 3, the adjustment wire 8 is arranged in the first connecting part 1-2 in a detachable manner, the insertion part 3 is fixedly connected with the protection assembly, and the adjustment wire 8 is connected with the insertion part 3 after passing through the protection assembly.

[0045] Specifically, the protection assembly comprises an insertion part sleeve 6 and a wire sleeve 7 fixedly arranged in the insertion part sleeve 6, the proximal end of the insertion part 3 is fixedly connected with the insertion part sleeve 6, and the adjustment wire 8 is connected with the insertion part 3 after passing through the wire sleeve 7, wherein the wire sleeve 7 is welded and fixed in the insertion part sleeve 6.

[0046] In order to facilitate the installation of the protection assembly, a positioning boss 1-2d matched with the protection assembly is arranged on the inner wall of the first connecting part 1-2, the protection assembly is fixed on the first connecting part 1-2 by a plurality of screws, and during the installation, the angle and position of the protection assembly in the first connecting part 1-2 are adjusted, and then the screws are screwed into the threaded holes on the first connecting part 1-2 and abut against the insertion part sleeve 6 to realize the positioning of the initial position of the insertion part 3.

[0047] The working principle of the utility model is as follows:

[0048] When the endoscope is used for observation, the adjustment wire 8 can be driven by the handle part 2 to pull the insertion part 3 to bend or release, so that the up-down position of the insertion part 3 is adjusted, the operator rotates the sheath 1 to drive the insertion part 3 to turn left and right by 90 degrees, so that the endoscope can be used for multi-angle and omnidirectional observation, and the working efficiency is improved.

[0049] In summary, the turning structure is simple in structure, convenient to operate and low in cost.

[0050] The above examples are only used to illustrate the technical concept and characteristics of the utility model, and the purpose is to enable those skilled in the art to understand the content of the utility model and implement it, and cannot limit the protection scope of the utility model. Any equivalent transformation or modification according to the spirit and essence of the utility model shall be covered within the protection scope of the utility model.

Claims

1. An endoscope insertion portion turning structure characterized by comprising: The utility model relates to a kind of steel wire adjusting device, including: Sheath, sheath is covered in the outer periphery of the insertion part proximal end, including sheath body and the first connecting part being arranged in the sheath body away from the insertion part distal end side, the insertion part is threaded in the first connecting part, the first connecting part is coaxially arranged with the sheath body and is formed with the steering groove; Handle portion, handle portion is rotationally matched with the sheath, including handle shell and the second connecting part being arranged in the handle shell near the sheath side, the second connecting part is limited on the first connecting part and is rotationally arranged in the steering groove.

2. The endoscope insertion portion turning structure according to claim 1, characterized by: The steering groove is provided with steering limiting portion along the radial direction of the first connecting part, and one end of the second connecting portion facing the steering groove is provided with a steering boss matched with the steering limiting portion.

3. The endoscope insertion portion turning structure according to claim 2, characterized by: The steering boss is arc-shaped, and the circumferential angle of the steering boss is 180 degrees.

4. The endoscope insertion portion turning structure according to claim 1, characterized by: A sealing ring is provided between the second connecting portion and the steering groove.

5. The endoscope insertion portion turning structure according to claim 4, characterized in that: A first limiting groove is provided on the outer wall of the second connecting portion and matched with the sealing ring.

6. The endoscope insertion portion turning structure according to claim 1, characterized in that: The second connecting portion is clamped and limited on the outer periphery of the first connecting portion by a snap spring.

7. The endoscope insertion portion turning structure according to claim 6, characterized in that: The end of the second connecting portion away from the sheath forms a limiting boss, and the snap spring is arranged in the second limiting groove on the outer wall of the first connecting portion and abuts against the limiting boss.

8. The endoscope insertion portion turning structure according to claim 1, characterized in that: Further comprising a protection assembly detachably arranged in the first connecting part, the insertion part is fixedly connected with the protection assembly, and the adjusting steel wire passes through the protection assembly and is connected with the insertion part.

9. The endoscope insertion portion turning structure according to claim 8, characterized in that: The inner wall of the first connecting part is provided with a positioning boss matched with the protection assembly, and the protection assembly is fixed in the first connecting part by a plurality of screws.

10. The endoscope insertion portion turning structure according to claim 9, characterized in that: The protection assembly includes an insertion part sleeve and a steel wire sleeve fixed in the insertion part sleeve.

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