Snake bone component and endoscope

Abstract

The present invention is applicable to the technical field of medical devices, and provides a snake bone component, comprising: a plurality of metal sheets, the plurality of metal sheets are parallelly spaced and arranged, the metal sheets have a first rope installation hole along a first radial direction, and a second rope installation hole along a second radial direction; a first rope and a second rope, the first rope and the second rope are respectively inserted into the first rope installation hole and the second rope installation hole, the first rope and the second rope are only fixedly connected to the metal sheet at the front end; a first elastic member and a second elastic member, the first elastic member and the second elastic member are located between adjacent metal sheets, the first elastic member and the second elastic member are respectively sleeved on the first rope and the second rope, the length of the first elastic member is equal to the distance between adjacent metal sheets, and the length of the second elastic member is less than the distance between adjacent metal sheets. The snake bone component of the present invention has a better bending shape.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to a snake bone component and an endoscope. Background Art

[0002] The snake bone is an important component of the endoscope, usually serving as the bending part of the endoscope. The bending and turning of the endoscope head end is achieved by pulling the traction rope placed inside the snake bone.

[0003] Snake bones in the prior art are usually made in two ways: riveted and non-riveted;

[0004] However, for riveted serpentines, the manufacturing and assembly process of rivet riveting is very complicated, requiring high technical skills from workers, and it is very easy to have riveting defects. In addition, the use of rivets will cause the following two problems: first, the rivet structure occupies the valuable space in the inner cavity of the serpentine joint. When the diameter of the insertion part of the endoscope is small, once the inner cavity space of the serpentine joint is occupied by rivets, there will not be enough space left for the clamp tube, light guide, wires and other internal objects; second, the rivet structure will increase the external dimensions of the bending part, and the increase in the external dimensions of the bending part will inevitably affect the insertion performance of the endoscope;

[0005] For the non-riveted snake bone, the snake bone unit is usually formed by cutting the metal tube. The matching surface between the snake bone units is usually complicated, so the cutting process is also complicated.

[0006] At the same time, the snake bone components in the prior art usually do not have a corresponding structure specifically set in the non-bending direction to limit the possible bending in the non-bending direction, thus resulting in an unsatisfactory bending shape; at the same time, no corresponding structure is set in the bending direction to limit the bending amount in the bending direction, which also results in an unsatisfactory bending shape.

[0007] Therefore, the snake bones in the prior art still have the following technical defects: first, the manufacturing process is relatively complicated, and second, the formed bending shape is not ideal. Summary of the invention

[0008] The purpose of the present invention is to provide a snake bone assembly and an endoscope, aiming to solve the technical problems in the prior art that the manufacturing process is relatively complicated and the formed bending shape is not ideal.

[0009] The present invention is implemented in this way: a snake bone component comprises:

[0010] A plurality of metal sheets, the plurality of metal sheets are arranged in parallel and spaced apart from each other, and the metal sheets have a first rope installation hole along a first radial direction and a second rope installation hole along a second radial direction;

[0011] A first rope and a second rope, wherein the first rope and the second rope are respectively inserted into the first rope installation hole and the second rope installation hole, and the first rope and the second rope are only fixedly connected to the metal sheet at the front end;

[0012] a first elastic member and a second elastic member, wherein the first elastic member and the second elastic member are located between adjacent metal sheets, the first elastic member and the second elastic member are respectively sleeved on the first rope and the second rope, the length of the first elastic member is equal to the distance between adjacent metal sheets, and the length of the second elastic member is less than the distance between adjacent metal sheets;

[0013] A rubber covering the outer sides of the plurality of metal sheets;

[0014] The metal sheet is also provided with a metal column mounting hole, and the metal column is inserted into the metal column mounting hole to connect the multiple metal sheets.

[0015] Furthermore, the metal column mounting holes are evenly distributed between the first rope mounting holes and the second rope mounting holes.

[0016] Furthermore, the metal sheet is also provided with a camera module mounting hole and an instrument tube mounting hole.

[0017] Furthermore, the first elastic member and the second elastic member are springs.

[0018] Further, the first radial direction is perpendicular to the second radial direction.

[0019] Furthermore, all the second elastic members are of equal length.

[0020] Furthermore, the first rope and the second rope each have two ropes.

[0021] The present invention also provides an endoscope, which comprises the snake bone assembly as described above.

[0022] The technical effects of the present invention relative to the prior art are:

[0023] 1. In the present invention, the first elastic member limits the possible bending of the snake bone component in the non-bending direction. Therefore, the snake bone component of the present invention has a better bending shape.

[0024] 2. In the present invention, since the manufacture of the metal sheet is very simple, the manufacturing process is simpler and more convenient than the traditional riveting and cutting. At the same time, the mounting holes thereon can be formed by stamping at one time.

[0025] 3. In the present invention, in the bending direction, when the metal sheet contacts the second elastic member, it is the maximum bending degree. Therefore, the lengths of all the second elastic members are set to be equal, so the bending amounts between each snake bone are the same. Therefore, the snake bone assembly further has a better bending shape. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments of the present invention or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 is a cross-sectional view of the snake bone assembly of the present invention along a first radial direction;

[0028] Figure 2 is a cross-sectional view of the snake bone assembly of the present invention along the second radial direction;

[0029] Figure 3 It is a schematic structural diagram of the metal sheet of the present invention. DETAILED DESCRIPTION

[0030] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0031] In the description of the present invention, it should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or indirectly connected to the other element.

[0032] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0034] For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0036] like Figure 1 The cross-sectional view of the snake bone assembly along the first radial direction D1 of the present invention is shown as follows. Figure 2 FIG. 1 is a cross-sectional view of the snake bone assembly of the present invention along the second radial direction D2. Figure 3 The schematic diagram of the metal sheet of the present invention is shown. The snake bone assembly includes: a plurality of metal sheets 10, a first rope W1 and a second rope W2, a first elastic member S1 and a second elastic member S2, and a rubber 30, wherein:

[0037] A plurality of metal sheets 10, wherein the plurality of metal sheets 10 are arranged in parallel and spaced apart from each other, and each metal sheet 10 has a first rope installation hole 11 along a first radial direction D1 and a second rope installation hole 12 along a second radial direction D2;

[0038] A first rope W1 and a second rope W2, wherein the first rope W1 and the second rope W2 are respectively inserted into the first rope installation hole 11 and the second rope installation hole 12, and the first rope W1 and the second rope W2 are only fixedly connected to the metal sheet 10 at the front end;

[0039] A first elastic member S1 and a second elastic member S2, wherein the first elastic member S1 and the second elastic member S2 are located between adjacent metal sheets 10, and the first elastic member S1 and the second elastic member S2 are respectively sleeved on the first rope W1 and the second rope W2, and the length of the first elastic member S1 is equal to the distance between adjacent metal sheets 10, and the length of the second elastic member S2 is less than the distance between adjacent metal sheets 10;

[0040] an eraser 30, wherein the eraser 30 covers the outer sides of the plurality of metal sheets 10;

[0041] The metal sheet 10 also has a metal column mounting hole 13 , and a metal column (not shown) is inserted into the metal column mounting hole 13 to connect the plurality of metal sheets 10 .

[0042] In the present invention, since the length of the second elastic member S2 is less than the distance between the adjacent metal sheets 10, when the second rope W2 is tightened, the frontmost metal sheet 10 is driven to bend, the frontmost metal sheet 10 drives the metal column to bend, and the metal column drives other metal sheets 10 to follow the bending. Since the length of the first elastic member S1 is equal to the distance between the adjacent metal sheets 10, the snake bone assembly will not bend in the direction of the second rope W2, so the snake bone assembly of the present invention has a better bending shape.

[0043] Further, in order to make the snake-bone assembly have a better bending shape, the metal column mounting holes 13 are evenly distributed between the first rope mounting holes 11 and the second rope mounting holes 12. Therefore, the stiffness of the snake-bone assembly in the bending direction is evenly distributed.

[0044] Furthermore, in order to improve assembly efficiency, the metal sheet 10 is also provided with a camera module mounting hole 14 and an instrument tube mounting hole 15. Therefore, it is very convenient to pass the camera module (not shown) and the instrument tube (not shown) through the metal sheet 10. The camera module is used for image acquisition, and the instrument tube is used for operating instruments such as scalpels and forceps to pass through, and is also used for fluid media such as liquid medicine or water to pass through.

[0045] Since the metal sheet 10 is very easy to manufacture, such as by stamping, the manufacturing process is simple and convenient compared to traditional riveting and cutting. At the same time, the camera module mounting hole 14, the instrument tube mounting hole 15, the first rope mounting hole 11, the second rope mounting hole 12, and the metal column mounting hole 13 can all be stamped and formed at one time.

[0046] Furthermore, the first elastic member S1 and the second elastic member S2 are springs.

[0047] In order to further enable the snake bone component to have a better bending shape, the first radial direction D1 is perpendicular to the second radial direction D2.

[0048] Furthermore, all the second elastic members S2 have the same length. In the bending direction, when the metal sheet contacts the second elastic member S2, the bending degree is the maximum. Therefore, if the lengths of all the second elastic members S2 are set to be equal, the bending amounts between the various snake bones are the same, and thus the snake bone assembly further has a better bending shape.

[0049] Furthermore, there are two first ropes W1 and two second ropes W2, so the snake-bone assembly in the present invention can be bent in two directions.

[0050] The present invention also provides an endoscope, which comprises the snake bone assembly as described above.

[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A snake bone component, characterized in that: include: A plurality of metal sheets (10), wherein the plurality of metal sheets (10) are arranged in parallel and spaced apart from each other, and the metal sheets (10) have a first rope installation hole (11) along a first radial direction (D1) and a second rope installation hole (12) along a second radial direction (D2); A first rope (W1) and a second rope (W2), wherein the first rope (W1) and the second rope (W2) are respectively inserted into the first rope installation hole (11) and the second rope installation hole (12), and the first rope (W1) and the second rope (W2) are only fixedly connected to the metal sheet (10) at the front end; A first elastic member (S1) and a second elastic member (S2), wherein the first elastic member (S1) and the second elastic member (S2) are located between adjacent metal sheets (10), the first elastic member (S1) and the second elastic member (S2) are respectively sleeved on the first rope (W1) and the second rope (W2), the length of the first elastic member (S1) is equal to the distance between adjacent metal sheets (10), and the length of the second elastic member (S2) is less than the distance between adjacent metal sheets (10); A rubber (30), the rubber (30) covering the outer sides of the plurality of metal sheets (10); The metal sheet (10) also has a metal column mounting hole (13), and the metal column is inserted into the metal column mounting hole (13) to connect the multiple metal sheets (10).

2. A snake bone assembly as claimed in claim 1, characterized in that: The metal column mounting holes (13) are evenly distributed between the first rope mounting holes (11) and the second rope mounting holes (12).

3. A snake bone assembly as claimed in claim 1, characterized in that: The metal sheet (10) is also provided with a camera module mounting hole (14) and an instrument tube mounting hole (15).

4. A snake bone assembly as claimed in any one of claims 1 to 3, characterized in that: The first elastic member (S1) and the second elastic member (S2) are springs.

5. A snake bone assembly as claimed in any one of claims 1 to 3, characterized in that: The first radial direction (D1) is perpendicular to the second radial direction (D2).

6. A snake bone assembly as claimed in any one of claims 1 to 3, characterized in that: All the second elastic members (S2) have the same length.

7. A snake bone assembly as claimed in any one of claims 1 to 3, characterized in that: The first rope (W1) and the second rope (W2) are both two in number.

8. An endoscope, characterized in that: The invention comprises a snake bone component as claimed in any one of claims 1 to 7.

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