Snake bone component and endoscope

Abstract

The present invention is applicable to the technical field of medical devices, and provides a snake bone assembly, comprising: a plurality of snake bone units, wherein a first pin hole is provided on the snake bone unit in a first diameter direction of the snake bone unit, and a traction rope installation portion is provided on the snake bone unit in a second diameter direction perpendicular to the first diameter direction; a metal rod, wherein the metal rod is provided at the center of the snake bone unit, and a second pin hole coaxial with the first pin hole is provided on the metal rod; a pin, wherein the pin passes through the first pin hole and the second pin hole, and the two ends of the pin are fixedly connected to the snake bone unit; a traction rope, wherein the traction rope is fixedly connected to the traction rope installation portion corresponding to the frontmost snake bone unit; and the metal rod is fixedly connected to the pins corresponding to the frontmost and rearmost snake bone units. In the present invention, all the snake bone units are connected by a pin plus a metal rod, and the manufacturing process is simple.

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 snake bones, the manufacturing and assembly process of rivet riveting connection is very complicated, requiring high technical skills of workers, and it is very easy to have riveting defects. At the same time, this kind of snake bone usually needs to be processed with connecting ears for riveting.

[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] The reason why the riveted and non-riveted manufacturing processes are more complicated is that the snake-bone units need to be provided with corresponding structures for the connection between adjacent snake-bone units, thus increasing the complexity of the processing. Summary of the invention

[0007] The purpose of the present invention is to provide a snake bone assembly and an endoscope, aiming to solve the technical problem of complex manufacturing process in the prior art.

[0008] The present invention is implemented in this way: a snake bone component comprises:

[0009] A plurality of snake bone units, wherein a first pin hole is provided on the snake bone unit in a first diameter direction of the snake bone unit, and a traction rope installation portion is provided on the snake bone unit in a second diameter direction perpendicular to the first diameter direction;

[0010] A metal rod, the metal rod being arranged at the center of the snake-bone unit, and the metal rod being provided with a second pin hole coaxial with the first pin hole;

[0011] A pin, the pin passes through the first pin hole and the second pin hole, and both ends of the pin are fixedly connected to the snake bone unit;

[0012] A traction rope is fixedly connected to a traction rope mounting portion corresponding to the frontmost snake bone unit.

[0013] The metal rod is fixedly connected to the pins corresponding to the snake bone units at the front end and the rear end.

[0014] Furthermore, there is an angle between the opposite end faces of adjacent snake-bone units.

[0015] Furthermore, the two ends of the pin are fixedly connected to the snake bone unit by welding, the metal rod is fixedly connected to the pins corresponding to the front and rear end snake bone units by welding, and the traction rope is fixedly connected to the traction rope mounting part corresponding to the front end snake bone unit by welding.

[0016] Further, the snake bone unit has a maximum width along the axial direction at the circumferential position where the first pin hole is located.

[0017] Furthermore, the snake-bone unit is located at the circumferential position of the traction rope mounting portion, and the snake-bone unit has a minimum width along the axial direction.

[0018] Furthermore, adjacent snake bone units abut against each other in the axial direction.

[0019] Furthermore, the abutting surface between adjacent snake bone units in the axial direction is an arc-shaped surface.

[0020] The present invention also provides an endoscope, which comprises the snake bone assembly as described above.

[0021] The technical effects of the present invention relative to the prior art are:

[0022] 1. In the present invention, it is not necessary to cut out connecting ears or complex connecting structures on the snake bone units. Instead, all the snake bone units are connected by means of pins and metal rods. The processing of the metal rods is very simple, and only the corresponding second pin holes need to be processed. Since the snake bone units do not need to be processed with connecting ears or complex connecting structures, their cutting processing is also simple. After the cutting processing is completed, only the first pin holes need to be processed.

[0023] 2. Since the pins are arranged in the non-bending direction of the snake-bone component, the snake-bone component has greater rigidity in the non-bending direction, and the snake-bone component of the present invention should have a better bending shape. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] 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.

[0025] Figure 1 is a schematic diagram of the snake bone assembly of the present invention;

[0026] Figure 2 is a schematic diagram of a snake bone unit of the present invention;

[0027] Figure 3 It is the matching diagram of metal rods and pins;

[0028] Figure 4 is a front view of the snake bone assembly of the present invention;

[0029] Figure 5 It is a front view of the snake bone unit 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 figure shows a schematic diagram of a snake bone assembly of the present invention, which includes a plurality of snake bone units 10, a metal rod 20, a pin 30, and a traction rope W, wherein:

[0037] like Figure 2 FIG. 1 is a schematic diagram of a snake-bone unit of the present invention. In a first diameter direction D1 of the snake-bone unit 10, a first pin hole 11 is provided on the snake-bone unit 10. In a second diameter direction D2 perpendicular to the first diameter direction D1, a traction rope installation portion 12 is provided on the snake-bone unit 10. That is, the first pin hole 11 and the traction rope installation portion 12 are spaced apart on the snake-bone unit 10. Specifically, the traction rope installation portion WA may be as follows: Figure 2 The mounting seat shown may also be a curved piece formed directly on the snake-bone unit.

[0038] The metal rod 20 is arranged at the center of the snake bone unit 10. Figure 3 The figure shows the matching diagram of the metal rod and the pin, wherein the metal rod 20 is provided with a second pin hole 21 coaxial with the first pin hole 11;

[0039] A pin 30, the pin 30 passes through the first pin hole 11 and the second pin hole 21, and both ends of the pin 30 are fixedly connected to the snake bone unit 10;

[0040] A traction rope W, wherein the traction rope W is fixedly connected to the traction rope installation portion 12 corresponding to the frontmost snake bone unit 10, and the traction rope W is non-fixedly connected to the traction rope installation portion 12 corresponding to the snake bone unit 10 except the frontmost one;

[0041] The metal rod 20 is fixedly connected to the pins 30 corresponding to the frontmost and rearmost snake bone units 10 .

[0042] Therefore, in the present invention, when the viewing angle of the endoscope needs to be adjusted, the traction rope W is tightened, and the traction rope W drives the frontmost snake bone unit 10 to bend, and the frontmost snake bone unit 10 drives the metal rod 20 to bend through the frontmost pin 30, and the other pins 30 bend synchronously following the bending of the metal rod 20, so that the snake bone unit 10 bends synchronously following the corresponding pins 30. Since the pins 30 are arranged in the non-bending direction of the snake bone assembly, the snake bone assembly has greater rigidity in the non-bending direction, and the snake bone assembly of the present invention should have a better bending shape.

[0043] At the same time, the snake bone unit 10 of the present invention does not need to be cut out with connecting ears or complex connecting structures for connecting adjacent snake bone units. Instead, all the snake bone units are connected by means of pins and metal rods. The processing of the metal rods is very simple, and only the corresponding second pin holes need to be processed. Since the snake bone units do not need to be processed with connecting ears or complex connecting structures, their cutting processing is also simple. After the cutting processing is completed, only the first pin holes need to be processed.

[0044] Therefore, compared with the traditional riveting and non-riveting methods, the processing difficulty of the snake bone component of the present invention is greatly reduced and the processing efficiency is improved.

[0045] like Figure 4 The figure shows a front view of the snake bone assembly of the present invention. Furthermore, in order to ensure that adjacent snake bone units do not interfere with each other during the rotation process, an angle θ is formed between the opposite end faces of the adjacent snake bone units 10 .

[0046] Furthermore, in order to simplify the manufacturing process, the two ends of the pin 30 are fixedly connected to the snake bone unit 10 by welding, the metal rod 20 is fixedly connected to the pin 30 corresponding to the front end and the rear end of the snake bone unit 10 by welding, and the traction rope W is fixedly connected to the traction rope mounting part 12 corresponding to the front end of the snake bone unit 10 by welding.

[0047] like Figure 5 The front view of the snake bone unit of the present invention is shown. The snake bone unit 10 is at the circumferential position where the first pin hole 11 is located. The snake bone unit 10 has a maximum width L in the axial direction. MAX .

[0048] The snake bone unit 10 is located at the circumferential position of the traction rope installation portion 12, and the snake bone unit 10 has a minimum width L in the axial direction. MIN .

[0049] Furthermore, the adjacent snake bone units 10 are axially abutted. That is to say, the adjacent snake bone units 10 do not need to overlap in the axial direction like connecting ears or complex connecting structures, and the assembly of the snake bone units 10 is very simple, and there is no need to consider the connection between the adjacent snake bone units 10, which greatly reduces the assembly time.

[0050] Furthermore, in order to ensure smooth rotation of adjacent snake bone units, the abutting surfaces between adjacent snake bone units 10 in the axial direction are arc-shaped surfaces.

[0051] The present invention also provides an endoscope, which comprises the snake bone assembly as described above.

[0052] 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 snake bone units (10), wherein a first pin hole (11) is provided on the snake bone unit (10) in a first diameter direction (D1) of the snake bone unit (10), and a traction rope mounting portion (12) is provided on the snake bone unit (10) in a second diameter direction (D2) perpendicular to the first diameter direction (D1); A metal rod (20), the metal rod (20) being arranged at the center of the snake-bone unit (10), and the metal rod (20) being provided with a second pin hole (21) coaxial with the first pin hole (11); A pin (30), the pin (30) passes through the first pin hole (11) and the second pin hole (21), and both ends of the pin (30) are fixedly connected to the snake bone unit (10); A traction rope (W), wherein the traction rope (W) is fixedly connected to a traction rope mounting portion (12) corresponding to the frontmost snake bone unit (10); The metal rod (20) is fixedly connected to the pins (30) corresponding to the frontmost and rearmost snake bone units (10).

2. A snake bone assembly as claimed in claim 1, characterized in that: An angle (θ) is formed between the opposite end faces of the adjacent snake bone units (10).

3. A snake bone assembly as claimed in claim 1, characterized in that: The two ends of the pin (30) are fixedly connected to the snake bone unit (10) by welding, the metal rod (20) is fixedly connected to the pins (30) corresponding to the front and rear end snake bone units (10) by welding, and the traction rope (W) is fixedly connected to the traction rope mounting portion (12) corresponding to the front end snake bone unit (10) by welding.

4. A snake bone assembly as claimed in claim 1, characterized in that: The snake bone unit (10) is located at a circumferential position where the first pin hole (11) is located, and the snake bone unit (10) has a maximum width along the axial direction.

5. The snake bone assembly according to claim 1, characterized in that: The snake-bone unit (10) is located at a circumferential position where the traction rope mounting portion (12) is located, and the snake-bone unit (10) has a minimum width along the axial direction.

6. A snake bone assembly as claimed in any one of claims 1 to 5, characterized in that: Adjacent snake bone units (10) abut against each other in the axial direction.

7. A snake bone assembly as claimed in any one of claims 1 to 5, characterized in that: The abutting surfaces between adjacent snake bone units (10) in the axial direction are arc-shaped surfaces.

8. An endoscope, characterized in that: It comprises the snake bone assembly as claimed in any one of claims 1 to 7.

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