A double curvature serpentine structure, insertion portion and endoscope

Abstract

The utility model relates to medical instrument technical field, concretely relates to a kind of double curvature snake bone structure, insertion part and endoscope.The double curvature snake bone structure includes first snake bone segment, second snake bone knot, third snake bone segment, fourth snake bone knot and fifth snake bone knot, first snake bone segment, second snake bone knot, third snake bone segment are sequentially connected, fifth snake bone knot is connected with the proximal end of first snake bone segment, fourth snake bone knot is connected with the distal end of third snake bone segment;The curvature center point of first snake bone segment is set as R after the double curvature snake bone structure is bent, the curvature center point of third snake bone segment is set as T, the horizontal distance of point R and point T is set as c, the vertical distance of point R and point T is set as d, limit distance c and d, and then limit the whole snake bone structure form, so that the utility model can be applicable to endoscope Large-angle clinical requirement.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a hyperbolic snake bone structure, an insertion part, and an endoscope. Background Technology

[0002] Endoscopes are commonly used medical diagnostic instruments that can visualize lesions that cannot be seen with X-rays. When examining the human kidneys with existing endoscopes, the distal end of the endoscope needs to be bent at a certain angle, usually achieved by a serpentine frame.

[0003] However, the renal pelvis of the human kidney has its own structural characteristics, characterized by a small area, small calyces, and concentrated distribution in the upper calyx region, and a large area, numerous calyces, and dispersed distribution in the lower calyx region. Figure 1 As shown, a large field of view is required for a complete examination, as indicated by the diagram.

[0004] The prior art CN210300919U discloses an electronic endoscope skeletal system, comprising a skeletal anterior segment ring, an anterior skeletal segment, a posterior skeletal segment, and a posterior skeletal ring riveted together in sequence. The anterior skeletal segment includes a set of anterior skeletal segments, and the posterior skeletal segment includes a set of posterior skeletal segments. Two first hinge rings are symmetrically arranged on one side of the anterior skeletal segment, and two second hinge rings are symmetrically arranged on the other side of the anterior skeletal segment. Two third hinge rings are symmetrically arranged on one side of the posterior skeletal segment, and two fourth hinge rings are symmetrically arranged on the other side of the posterior skeletal segment. An angle is formed between the edges of two adjacent anterior skeletal segments in the anterior skeletal segment; an angle is also formed between the edges of two adjacent posterior skeletal segments in the posterior skeletal segment. This results in a smaller upward bending angle and a larger downward bending angle of the skeletal system, adapting to the different requirements of renal pelvis extension and retraction, while also being less prone to damage and extending its service life.

[0005] The aforementioned prior art controls the radius of curvature of the serpentine segment by limiting the reduced edge of the serpentine joint. Prior art CN218651747U discloses a proximal serpentine segment, a serpentine assembly, an insertion part, and an endoscope. Specifically, a proximal serpentine segment includes multiple proximal serpentine units rotatably connected; the proximal serpentine units are connected by a limiting structure in a first radial direction, which is perpendicular to the rotation axis of the proximal serpentine unit; from the distal end to the proximal end of the proximal serpentine segment, the radius of curvature of the proximal serpentine segment gradually decreases due to the limiting structure.

[0006] This existing technology also limits the radius of curvature of the serpentine segment to gradually increase from the distal to the proximal end, adapting to the structural characteristics of the kidney. However, it does not limit the overall curvature of the serpentine segment, which cannot meet some large-angle clinical needs. Utility Model Content

[0007] In order to solve the above-mentioned technical problems existing in the prior art, the present invention provides a hyperbolic snake bone structure, an insertion part and an endoscope.

[0008] To achieve the above objectives, the technical solution of this utility model is as follows: In one aspect, the present invention provides a hyperbolic serpentine structure, comprising a first serpentine segment, a second serpentine segment, a third serpentine segment, a fourth serpentine segment, and a fifth serpentine segment, wherein the first serpentine segment, the second serpentine segment, and the third serpentine segment are connected in sequence, the fifth serpentine segment is connected to the proximal end of the first serpentine segment, and the fourth serpentine segment is connected to the distal end of the third serpentine segment. A coordinate system is established through the axis of the fifth serpentine segment, with the Y-axis of the coordinate system being the axis of the fifth serpentine segment and the X-axis perpendicular to the Y-axis. After the hyperbolic serpentine structure is bent, the center of curvature of the first serpentine segment is set as R, the center of curvature of the third serpentine segment is set as T, the X-axis distance between point R and point T is set as c, and the Y-axis distance between point R and point T is set as d. Then: , , In the above formula, A and B are constants, both taking any number between 0.8 and 1; b is the radius of curvature of the third serpentine segment.

[0009] Furthermore, if the radius of curvature of the first serpentine segment is a, then a = 2b.

[0010] Furthermore, the first snake bone segment includes several first snake bone segments, and adjacent first snake bone segments are connected by riveting.

[0011] Furthermore, a first hinge ring is provided on both sides of the first snake segment, and the two sides of the first snake segment are tapered upward and downward with the first hinge ring as the center.

[0012] Furthermore, the angle of reduction at both sides of the first serpentine segment... The range is 0-10°.

[0013] Furthermore, the third serpentine segment comprises several third serpentine segments, with adjacent third serpentine segments connected by riveting.

[0014] Furthermore, a third hinge ring is provided on both sides of the third serpentine segment, and the edges of both sides of the third serpentine segment are reduced upward and downward with the third hinge ring as the center.

[0015] Furthermore, the angle of reduction at the lateral edges of the third serpentine segment... The range is 0-10°.

[0016] Secondly, the present invention provides an insertion part, the insertion part including an insertion tube and the above-mentioned hyperbola structure, the insertion tube being connected to the fifth segment of the hyperbola structure.

[0017] Thirdly, this utility model provides an endoscope, including a handle portion and the aforementioned insertion portion, wherein the handle portion is capable of controlling the bending of the hyperbolic serpentine structure of the insertion portion.

[0018] Compared with the prior art, the present invention has the following beneficial effects: The hyperbolic snake bone structure provided by this invention defines the morphology of the entire snake bone structure by limiting the relative positions of the curvature centers of the first and third snake bone segments, thereby enabling the snake bone structure to meet the large-angle clinical needs of endoscopy. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the morphology of the snake-bone structure in the renal pelvis in the prior art. Figure 2 This is a schematic diagram of the hyperbolic serpentine structure of this utility model; Figure 3 This is a schematic diagram of the structure of the first serpentine segment; Figure 4 This is a schematic diagram of the structure of the first serpentine segment; Figure 5 This is a schematic diagram of the structure of the third serpentine segment; Figure 6 This is a schematic diagram of the structure of the third serpentine segment; Figure 7 This is a schematic diagram of the bending shape of the present invention when applied to a renal pelvis examination.

[0020] Explanation of reference numerals in the attached figures: 1-First serpentine segment, 11-First serpentine segment, 2-Second serpentine segment, 3-Third serpentine segment, 31-Third serpentine segment, 4-Fourth serpentine segment, 5-Fifth serpentine segment. Detailed Implementation

[0021] The technical solution of this utility model will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are not all embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] It should be noted that, unless otherwise specifically stated, the relative arrangement and numerical expressions of the components and steps described in these embodiments should not be construed as limiting the scope of this utility model.

[0023] The following description of exemplary embodiments is merely illustrative and is not intended to limit the present invention or its application or use in any way. Techniques, methods, and apparatus known to those skilled in the art may not be discussed in detail herein, but where applicable, such techniques, methods, and apparatus should be considered part of this specification.

[0024] Example 1 This embodiment provides a hyperbolic serpentine structure, such as Figure 2 As shown, it includes a first serpentine segment 1, a second serpentine segment 2, a third serpentine segment 3, a fourth serpentine segment 4, and a fifth serpentine segment 5. The first serpentine segment 1, the second serpentine segment 2, and the third serpentine segment 3 are connected in sequence. The fifth serpentine segment 5 is connected to the proximal end of the first serpentine segment 1, and the fourth serpentine segment 4 is connected to the distal end of the third serpentine segment 3. like Figure 3 As shown, the first snake-bone segment 1 includes several first snake-bone segments 11, and adjacent first snake-bone segments 11 are connected by riveting. By controlling the cutting angle of the edges of the first snake-bone segments 11, the first snake-bone segments 11 can be assembled into snake-bone segments with different curvatures. Figure 4 As shown, first hinge rings are provided on both sides of the first snake segment 11. Adjacent first snake segments 11 are riveted together through the first hinge rings, and adjacent first snake segments 11 can rotate relative to each other at a certain angle. Both sides of the first snake segment 11 taper upwards and downwards with the first hinge ring as the center. The taper angle of the two sides of the first snake segment 11 is... The angle is 0-10°. In this embodiment, The angle is 2.5°. In other embodiments, Other angles can also be used.

[0025] The second snake segment 2 is the transition section between the first snake segment 1 and the third snake segment 3. Second hinge rings are provided on both sides of the second snake segment 2 to connect the first snake segment 1 and the third snake segment 3. The edge reduction angle connecting the second snake segment 2 and the first snake segment 1 is the same as that of the first snake segment 11, and the edge reduction angle connecting the second snake segment 2 and the third snake segment 3 is the same as that of the third snake segment 31.

[0026] like Figure 5 As shown, the third snake bone segment 3 includes several third snake bone segments 31, and adjacent third snake bone segments 31 are connected by riveting.

[0027] like Figure 6As shown, the length of the third segment 31 is less than the length of the first segment 11. Third hinge rings are provided on both sides of the third segment 31, and adjacent third segments 31 are riveted together through these third hinge rings. Adjacent third segments 31 can rotate relative to each other at a certain angle. Both sides of the third segment 31 taper upwards and downwards with respect to the third hinge rings. The taper angle of the two sides of the third segment 31 is... The angle is 0-10°. In this embodiment, The angle is 2°, and in other embodiments, Other angles can also be used.

[0028] like Figure 7 As shown, a coordinate system is established through the axis of the fifth serpentine segment, with the Y-axis of the coordinate system being the axis of the fifth serpentine segment and the X-axis perpendicular to the Y-axis. After the hyperbolic serpentine structure is bent, the center of curvature of the first serpentine segment 1 is set as R, the center of curvature of the third serpentine segment 3 is set as T, the X-axis distance between point R and point T is set as c, and the Y-axis distance between point R and point T is set as d. Then: , , In the above formula, A and B are constants, both taking any number between 0.8 and 1; b is the radius of curvature of the third serpentine segment.

[0029] In addition, if the radius of curvature of the first serpentine segment 11 is a, then a = 2b.

[0030] Example 2 This embodiment provides an insertion part for use in an endoscope. The insertion part includes an insertion tube and a hyperbolic serpentine structure provided in Embodiment 1. The insertion tube is connected to the fifth serpentine segment 5 of the hyperbolic serpentine structure.

[0031] Example 3 This embodiment provides an endoscope, including a handle and an insertion part provided in Embodiment 2. The handle can control the bending of the hyperbolic serpentine structure of the insertion part.

[0032] The above specific embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to examples, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A hypercurvature serpentine structure, comprising a first serpentine segment, a second serpentine segment, a third serpentine segment, a fourth serpentine segment, and a fifth serpentine segment, wherein the first, second, and third serpentine segments are sequentially connected, the fifth serpentine segment is connected to the proximal end of the first serpentine segment, and the fourth serpentine segment is connected to the distal end of the third serpentine segment; characterized in that, A coordinate system is established through the axis of the fifth serpentine segment, with the Y-axis of the coordinate system being the axis of the fifth serpentine segment and the X-axis perpendicular to the Y-axis. After the hyperbolic serpentine structure is bent, the center of curvature of the first serpentine segment is set as R, the center of curvature of the third serpentine segment is set as T, the X-axis distance between point R and point T is set as c, and the Y-axis distance between point R and point T is set as d. In the above formula, A and B are constants, both taking any number between 0.8 and 1; b is the radius of curvature of the third serpentine segment.

2. The hypercurvature serpentine structure according to claim 1, characterized in that, If the radius of curvature of the first serpentine segment is a, then a = 2b.

3. The hypercurvature serpentine structure according to claim 1, characterized in that, The first snake bone segment includes several first snake bone segments, and adjacent first snake bone segments are connected by riveting.

4. The hypercurvature serpentine structure according to claim 3, characterized in that, The first serpentine segment has a first hinge ring on both sides, and the edges of both sides of the first serpentine segment are tapered upward and downward with the first hinge ring as the center.

5. The hypercurvature serpentine structure according to claim 4, characterized in that, The angle of reduction on both sides of the first serpentine segment The range is 0-10°.

6. The hypercurvature serpentine structure according to claim 1, characterized in that, The third serpentine segment comprises several third serpentine segments, with adjacent third serpentine segments connected by riveting.

7. The hypercurvature serpentine structure according to claim 6, characterized in that, The third serpentine segment is provided with a third hinge ring on both sides, and the edges of both sides of the third serpentine segment are reduced upward and downward with the third hinge ring as the center.

8. The hypercurvature serpentine structure according to claim 7, characterized in that, The angle of reduction at both sides of the third serpentine segment The range is 0-10°.

9. An insertion part, characterized in that, The insertion part includes an insertion tube and a hyperbola structure as described in any one of claims 1-8, wherein the insertion tube is connected to the fifth segment of the hyperbola structure.

10. An endoscope, characterized in that, It includes a handle portion and an insertion portion as described in claim 9, wherein the handle portion is capable of controlling the bending of the hyperbolic serpentine structure of the insertion portion.

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