Snake bone structure and endoscope

Abstract

The utility model relates to the technical field of endoscopes, and discloses a snake bone structure and an endoscope, and the snake bone structure comprises a fixing ring and a flexible bending part connected to the fixing ring; the flexible bending part comprises a snake bone head part, a snake bone middle part connected to the snake bone head part and a snake bone tail part connected to the snake bone middle part, and the snake bone middle part comprises a plurality of snake bone middle sections which are connected end to end; the plurality of anti-pinch mechanisms are respectively connected to the snake bone head part, the snake bone middle section and the snake bone tail part; according to the utility model, the anti-pinch mechanism is additionally arranged on the part, which is possibly damaged by clamping, of each snake joint in the flexible bending part, so that when the adjacent snake joints start to be in contact with each other, the anti-pinch mechanisms are extruded and spread and extend in the contact gap of the two snake joints; the elastic sleeve located in the contact gap of the two adjacent snake joints can be effectively squeezed out of the contact gap, and therefore damage to the elastic sleeve in the operation process is reduced or completely eradicated.

Description

Technical Field

[0001] This utility model relates to the field of endoscope technology, and more specifically, to a snake-bone structure and an endoscope. Background Technology

[0002] The snake-bone structure used in endoscopes is a special structural design for flexible endoscopes or other flexible instruments. Its design is inspired by the skeletal structure of a snake, which is composed of a series of interconnected small bones, each connected by joints, giving the entire snake skeleton flexibility and bendability.

[0003] The endoscopic snake structure uses a similar principle, consisting of a series of interconnected small bones or joints. It is used to insert into internal organs and the operator controls it to bend in a preset direction to adjust the position of the endoscope camera.

[0004] Currently, the flexible bending part in the snake bone structure is made up of several snake bone segments connected together. However, in actual operation, when the bending angle of the snake bone segment structure is large, the adjacent snake bone segments will come into contact with each other, which may cause excessive compression to the elastic sleeve sleeved on the outside of the snake bone, resulting in damage to the elastic sleeve. Utility Model Content

[0005] The purpose of this invention is to provide a snake-bone structure and endoscope in order to solve the above-mentioned problems.

[0006] This utility model provides a snake bone structure, including:

[0007] A retaining ring and a flexible curved portion connected to the retaining ring;

[0008] The flexible bending section includes a snake bone head, a snake bone middle section connected to the snake bone head, and a snake bone tail connected to the snake bone middle section. The snake bone head, snake bone middle section, and snake bone tail are coaxial. The snake bone tail is fixedly connected to a fixing ring. The snake bone middle section includes several snake bone middle segments connected head to tail.

[0009] Several anti-pinch mechanisms are respectively connected to the head, middle segment, and tail of the snake bone. Each anti-pinch mechanism includes a sealing bladder and a limiting member that cooperates with the sealing bladder. When the head of the snake bone rotates by a set angle around the connection point with the middle segment and / or the connection point with the adjacent middle segment and / or the connection point with the tail, the sealing bladder is used to spread along the contact gap between the head and the middle segment and / or the contact gap between two adjacent middle segments and / or the contact gap between the middle segment and the tail.

[0010] As a further optimization of this utility model, the fixing ring is provided with a welding positioning groove and a square groove, wherein the welding positioning groove is located at the port where the fixing ring connects to the snake tail.

[0011] As a further optimization of this utility model, the snake bone head includes a snake bone head segment, a through hole on the snake bone head segment, two arc-shaped arms 1 and 2 integrally formed on one end of the snake bone head segment, and a protrusion 1 integrally formed on the arc-shaped arm 1. The arc-shaped arm 1 and arc-shaped arm 2 integrally formed have the same curvature and are symmetrically arranged. The two arc-shaped arms 1 and the two arc-shaped arms 2 are symmetrically arranged. The snake bone head segment is provided with a square groove 2.

[0012] As a further optimization of this utility model, the snake bone middle part includes a snake bone middle segment, two arc-shaped arms three and four integrally formed at one end of the snake bone middle segment, a protrusion two integrally formed on the arc-shaped arm three, two arc-shaped arms five and four arc-shaped arms six integrally formed at the other end of the snake bone middle segment. The integrally formed arc-shaped arms three and four have the same curvature and are symmetrically arranged. The two arc-shaped arms three and two arc-shaped arms four are symmetrically arranged. The two arc-shaped arms six are symmetrically arranged on both sides of the corresponding arc-shaped arms five and the two arc-shaped arms six have the same curvature. The four arc-shaped arms six are symmetrically arranged. The integrally formed arc-shaped arms three and protrusion two are configured to cooperate with the arc-shaped arms five. The arc-shaped arms six are configured to cooperate with the arc-shaped arms three or four.

[0013] As a further optimization of this utility model, the snake tail includes a snake tail segment, a welding positioning groove 2 located at one end of the snake tail segment, a plurality of cutting grooves equidistantly located in the middle of the snake tail segment, two arc-shaped arms 7 and four arc-shaped arms 8 integrally formed at the other end of the snake tail segment. The two arc-shaped arms 7 are symmetrically arranged, and the arc-shaped arms 7 are configured to cooperate with the integrally formed arc-shaped arms 3 and protrusion 2. The four arc-shaped arms 8 are all symmetrically arranged, and the arc-shaped arms 8 are configured to cooperate with the arc-shaped arms 3 or the arc-shaped arms 4.

[0014] As a further optimization of this utility model, the cutting angle of the cutting groove is 340°, and the cutting angle of two adjacent cutting grooves is deflected by 20°.

[0015] As a further optimization of this utility model, the first segment, middle segment, and tail segment of the snake bone are each provided with several mounting grooves that cooperate with the sealing bladder. The limiting member is used to limit and fix the sealing bladder in the mounting groove, and the limiting member is welded to the first segment, middle segment, or tail segment of the snake bone.

[0016] As a further optimization of this utility model, it also includes several steel wire fixing components, which are respectively disposed on the first segment of the snake bone, several middle segments of the snake bone, and the tail segment of the snake bone.

[0017] As a further optimization of this utility model, the wire fixing assembly includes a groove and a limiting buckle connected to the inner wall of the groove. The groove is opened on the first segment, middle segment, or tail segment of the snake bone.

[0018] An endoscope employing a snake-bone structure as described above.

[0019] The beneficial effects of this utility model are as follows: This utility model adds an anti-pinch mechanism to each snake joint in the flexible bending part where clamping damage may occur. When adjacent snake joints begin to contact each other, the anti-pinch mechanism is squeezed and spreads in the contact gap between the two snake joints. This can effectively push the elastic sleeve located in the contact gap between the two adjacent snake joints to the outside of the contact gap, thereby reducing or eliminating damage to the elastic sleeve during operation. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the fixing ring of this utility model;

[0022] Figure 3 This is a schematic diagram of the snake-bone head of this utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the middle part of the snake bone in this utility model;

[0024] Figure 5 This is a schematic diagram of the snake tail structure of this utility model;

[0025] Figure 6 This is a view showing the interaction between the snake-bone middle section and the anti-pinch mechanism of this utility model;

[0026] Figure 7 This is the utility model Figure 6 A magnified view of point A in the middle.

[0027] In the diagram: 1. Fixing ring; 101. Welding positioning groove one; 2. Flexible bending part; 21. Snake head; 2101. Snake head segment; 2102. Through hole; 2103. Arc arm one; 2104. Arc arm two; 2105. Protrusion one; 22. Snake middle; 2201. Snake middle segment; 2202. Arc arm three; 2203. Arc arm four; 2204. Protrusion two; 2205. Arc arm five; 2206. Arc arm six; 23. Snake tail; 2301. Snake tail segment; 2302. Welding positioning groove two; 2303. Arc arm seven; 2304. Arc arm eight; 2305. Cutting groove; 3. Anti-pinch mechanism; 301. Sealing bladder; 302. Limiting component; 4. Steel wire fixing assembly; 401. Through groove; 402. Limiting buckle. Detailed Implementation

[0028] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed merely to enable those skilled in the art to better understand and implement the subject matter described herein. Furthermore, features described in some examples may be combined in other examples.

[0029] like Figures 1 to 7 As shown, a snake-bone structure includes:

[0030] A fixed ring 1 and a flexible curved part 2 connected to the fixed ring 1;

[0031] The flexible bending part 2 includes a snake bone head 21, a snake bone middle part 22 connected to the snake bone head 21, and a snake bone tail 23 connected to the snake bone middle part 22. The snake bone head 21, snake bone middle part 22 and snake bone tail 23 are coaxial. The snake bone tail 23 is fixedly connected to the fixing ring 1. The snake bone middle part 22 includes a plurality of snake bone middle segments 2201 connected end to end.

[0032] Several anti-pinch mechanisms 3 are respectively connected to the snake head 21, the snake middle segment 2201 and the snake tail 23. The anti-pinch mechanism 3 includes a sealing bladder 301 and a limiting member 302 that cooperates with the sealing bladder 301. When the snake head 21 rotates around the connection with the snake middle segment 2201 and / or the snake middle segment 2201 around the connection with the adjacent snake middle segment 2201 and / or the snake middle segment 2201 around the connection with the snake tail 23 by a set angle, the sealing bladder 301 is used to spread along the contact gap between the snake head 21 and the snake middle segment 2201 and / or the contact gap between two adjacent snake middle segments 2201 and / or the contact gap between the snake middle segment 2201 and the snake tail 23.

[0033] It should be noted that during operation of a conventional snake-bone structure, when the bending between the snake head 21 and the middle segment 2201, between two adjacent middle segments 2201, and between the middle segment 2201 and the tail 23 reaches a set value, bending side contact will occur between these segments, forming a tight contact. During this process, the elastic sleeve located in this area may be damaged. The anti-pinch mechanism 3 prevents damage to the elastic sleeve located in this area. During the bending contact between the snake head 21 and the snake middle segment 2201 and the snake tail 23, the anti-pinch mechanism 3 is first squeezed, causing the anti-pinch mechanism 3 to begin to deform under force. This deformation spreads along the contact gaps between the snake head 21 and the snake middle segment 2201, between two adjacent snake middle segments 2201, and between the snake middle segment 2201 and the snake tail 23. This gradually fills the contact gaps between the snake head 21 and the snake middle segment 2201, between two adjacent snake middle segments 2201, and between the snake middle segment 2201 and the snake tail 23, and applies a thrust away from the clamping area to the elastic sleeve, thereby effectively avoiding or reducing damage to the elastic sleeve.

[0034] In an optional embodiment of this utility model, such as Figure 1 and Figure 2 As shown, the fixing ring 1 is provided with a welding positioning groove 101 and a square groove 1. The welding positioning groove 101 is located at the port where the fixing ring 1 connects to the snake tail 23.

[0035] It should be noted that, as mentioned above, the diameter of the snake tail 23 matches the inner diameter of the fixing ring 1. After the snake tail 23 is inserted into the fixing ring 1 to the set position, the snake tail 23 and the fixing ring 1 can be welded from the welding positioning groove 101, so that the fixing ring 1 and the snake tail 23 form a whole.

[0036] In an optional embodiment of this utility model, such as Figure 1 and Figure 3 As shown, the snake bone head 21 includes a snake bone head segment 2101, a through hole 2102 provided on the snake bone head segment 2101, two arc-shaped arms 1 2103 and arc-shaped arms 2104 integrally formed on one end of the snake bone head segment 2101, and a protrusion 1 2105 integrally formed on the arc-shaped arms 1 2103. The arc-shaped arms 1 2103 and arc-shaped arms 2104 integrally formed have the same curvature and are symmetrically arranged. The two arc-shaped arms 1 2103 and the two arc-shaped arms 2104 are symmetrically arranged. A square groove 2 is provided on the snake bone head segment 2101.

[0037] The snake bone middle section 22 includes a snake bone middle segment 2201, two arc-shaped arms 2202 and 2203 integrally formed at one end of the snake bone middle segment 2201, a protrusion 2204 integrally formed on the arc-shaped arm 2202, and two arc-shaped arms 2205 and four arc-shaped arms 2206 integrally formed at the other end of the snake bone middle segment 2201. The integrally formed arc-shaped arms 2202 and 2203 have the same curvature and are symmetrically arranged. The three 2202 and the two arc-shaped arms four 2203 are symmetrically arranged. The two arc-shaped arms six 2206 are symmetrically arranged on both sides of the corresponding arc-shaped arm five 2205 and the two arc-shaped arms six 2206 have the same curvature. The four arc-shaped arms six 2206 are symmetrically arranged. The integrally formed arc-shaped arm three 2202 and the protrusion two 2204 are matched with the arc-shaped arm five 2205. The arc-shaped arm six 2206 is matched with the arc-shaped arm three 2202 or the arc-shaped arm four 2203.

[0038] The snake tail 23 includes a snake tail segment 2301, a welding positioning groove 2302 located at one end of the snake tail segment 2301, a plurality of cutting grooves 2305 equidistantly located in the middle of the snake tail segment 2301, and two arc-shaped arms 2303 and four arc-shaped arms 2304 integrally formed at the other end of the snake tail segment 2301. The two arc-shaped arms 2303 are symmetrically arranged and are configured to cooperate with the integrally formed arc-shaped arm 2202 and protrusion 2204. The four arc-shaped arms 2304 are all symmetrically arranged and are configured to cooperate with the arc-shaped arm 2202 or the arc-shaped arm 2203.

[0039] It should be noted that, as described above, the assembly process of the flexible bending part 2 is as follows: the protrusion 1 2105 on the first segment 2101 of the snake bone is aligned with the arc-shaped arm 5 2205 on the adjacent middle segment 2201 of the snake bone and inserted. The arc-shaped arm 6 2206 on the middle segment 2201 of the snake bone can surround the outside of the arc-shaped arm 1 2103 and the arc-shaped arm 2104, thereby forming a stable connection. The first segment 2101 of the snake bone can be deflected at a set angle around the mating point of the protrusion 1 2105 and the arc-shaped arm 5 2205. Similarly, the mating between two adjacent middle segments 2201 of the snake bone is achieved by the protrusion 2 2204 and the arc-shaped arm 5 2205. Arc arm 5 2205 engages with arc arm 6 2206, which surrounds the outside of arc arm 3 2202 or arc arm 4 2203. The engagement between the telson 2301 and the adjacent telson 2201 is achieved by arc arm 7 2303 and protrusion 2 2204, with arc arm 8 2304 surrounding the outside of arc arm 3 2202 and arc arm 4 2203, forming a rotatable interlocking structure. This results in a flexible, bidirectionally bendable snake bone structure, the degree of which can be adjusted by the wire operating structure, thereby changing the insertion path of the snake bone structure.

[0040] In an optional embodiment of this utility model, such as Figure 5 As shown, the cutting angle of the cutting groove 2305 is 340°, and the cutting angles of two adjacent cutting grooves 2305 are both deflected by 20°.

[0041] It should be noted that, as mentioned above, the cutting path of the cutting groove 2305 is a spiral path with an angle of 340°, which can ensure that the snake tail section 2301 has a certain bending ability and make the snake tail section 2301 a whole, without the need for splicing multiple pipe structures.

[0042] In an optional embodiment of this utility model, such as Figure 1 , Figures 3 to 7 As shown, the first segment 2101, the middle segment 2201, and the tail segment 2301 of the snake bone are each provided with several mounting grooves that cooperate with the sealing bladder 301. The limiting member 302 is used to limit and fix the sealing bladder 301 in the mounting groove. The limiting member 302 is welded to the first segment 2101, the middle segment 2201, or the tail segment 2301 of the snake bone.

[0043] It should be noted that, as described above, when the snake's head 21 and the middle segment 2201, two adjacent middle segments 2201, and the snake's tail 23 begin to contact, the sealing capsule 301 will be squeezed preferentially. The sealing capsule 301 is filled with a set amount of solution, the solution material of which includes but is not limited to glucose solution. After being squeezed, the sealing capsule 301 begins to deform and moves along the snake's head 21 and the middle segment 2201, and between two adjacent middle segments 2201. The gaps between the snake's head 21 and the snake's middle segment 2201, between two adjacent snake middle segments 2201, and between the snake's middle segment 2201 and the snake's tail 23 are spread and filled, thereby allowing the elastic sleeve located in the gaps between the snake's head 21 and the snake's middle segment 2201, between two adjacent snake middle segments 2201, and between the snake's middle segment 2201 and the snake's tail 23 to be pushed out, thus effectively preventing the elastic sleeve from being clamped and damaged.

[0044] In an optional embodiment of this utility model, such as Figure 1 , Figure 3 and Figure 5 As shown, it also includes several wire fixing components 4, which are respectively disposed on the first segment 2101 of the snake bone, several middle segments 2201 of the snake bone, and the tail segment 2301 of the snake bone.

[0045] The wire fixing assembly 4 includes a through groove 401 and a limiting buckle 402 connected to the inner wall of the through groove 401. The through groove 401 is opened on the first segment 2101, the middle segment 2201, or the tail segment 2301 of the snake bone.

[0046] It should be noted that, as mentioned above, in this utility model, the steel wire fixing assembly 4 is provided with four sets on the snake tail section 2301, two sets on the fourth, eighth and twelfth middle sections 2201 respectively, and two sets on the snake head section 2101, thereby providing an installation path and limiting function for the steel wire.

[0047] This utility model also provides an endoscope with a snake-bone structure disclosed in any of the above optional embodiments. The endoscope also includes a wire operating system and an image acquisition system. The wire operating system and the image acquisition system are existing technologies and will not be described in detail here.

[0048] The above description of this embodiment is not limited to the specific implementation described above. The specific implementation described above is merely illustrative and not restrictive. Those skilled in the art can make many other forms based on the guidance of this embodiment, all of which are within the protection scope of this embodiment.

Claims

1. A snake-bone structure, characterized in that, include: A fixed ring (1) and a flexible curved part (2) connected to the fixed ring (1); The flexible bending part (2) includes a snake bone head (21), a snake bone middle part (22) connected to the snake bone head (21), and a snake bone tail (23) connected to the snake bone middle part (22). The snake bone head (21), snake bone middle part (22) and snake bone tail (23) are coaxial. The snake bone tail (23) is fixedly connected to the fixing ring (1). The snake bone middle part (22) includes a plurality of snake bone middle segments (2201) connected end to end. Several anti-pinch mechanisms (3) are respectively connected to the head (21), middle segment (2201), and tail (23) of the snake bone. Each anti-pinch mechanism (3) includes a sealing sac (301) and a limiting member (302) that cooperates with the sealing sac (301). When the head (21) of the snake bone is connected to the middle segment (2201) and / or the middle segment (2201) of the snake bone is connected to the middle segment (2201), the anti-pinch mechanism (3) is connected to the tail (23) of the snake bone. When the connection between adjacent middle segments (2201) and / or the middle segment (2201) rotates at a set angle around the connection with the tail (23), the sealing capsule (301) is used to spread along the contact gap between the head (21) and the middle segment (2201) and / or the contact gap between two adjacent middle segments (2201) and / or the contact gap between the middle segment (2201) and the tail (23).

2. The snake-bone structure according to claim 1, characterized in that, The fixing ring (1) is provided with a welding positioning groove (101) and a square groove. The welding positioning groove (101) is located at the port where the fixing ring (1) connects to the snake tail (23).

3. The snake-bone structure according to claim 2, characterized in that, The snake bone head (21) includes a snake bone head segment (2101), a through hole (2102) on the snake bone head segment (2101), two arc-shaped arms (2103) and two arc-shaped arms (2104) integrally formed on one end of the snake bone head segment (2101), and a protrusion (2105) integrally formed on the arc-shaped arm (2103). The arc-shaped arms (2103) and the arc-shaped arms (2104) integrally formed have the same curvature and are symmetrically arranged. The two arc-shaped arms (2103) and the two arc-shaped arms (2104) are symmetrically arranged. The snake bone head segment (2101) is provided with a square groove.

4. A snake-bone structure according to claim 3, characterized in that, The snake bone middle section (22) includes a snake bone middle segment (2201), two arc-shaped arms three (2202) and four arc-shaped arms four (2203) integrally formed at one end of the snake bone middle segment (2201), a protrusion two (2204) integrally formed on the arc-shaped arm three (2202), two arc-shaped arms five (2205) integrally formed at the other end of the snake bone middle segment (2201), and four arc-shaped arms six (2206). The integrally formed arc-shaped arms three (2202) and four arc-shaped arms four (2203) have the same curvature and are symmetrically arranged. The two arc-shaped arms three (2202) and the two said arc-shaped arms four (2203) are symmetrically arranged. The two said arc-shaped arms six (2206) are symmetrically arranged on both sides of the corresponding arc-shaped arm five (2205) and the arc of the two arc-shaped arms six (2206) is the same. The four said arc-shaped arms six (2206) are symmetrically arranged. The integrally formed arc-shaped arm three (2202) and protrusion two (2204) are arranged in conjunction with the arc-shaped arm five (2205). The arc-shaped arm six (2206) is arranged in conjunction with the arc-shaped arm three (2202) or the arc-shaped arm four (2203).

5. A snake-bone structure according to claim 4, characterized in that, The snake tail (23) includes a snake tail segment (2301), a welding positioning groove 2 (2302) located at one end of the snake tail segment (2301), a number of cutting grooves (2305) equidistantly located in the middle of the snake tail segment (2301), two arc-shaped arms 7 (2303) and four arc-shaped arms 8 (2304) integrally formed at the other end of the snake tail segment (2301). The two arc-shaped arms 7 (2303) are symmetrically arranged, and the arc-shaped arms 7 (2303) are matched with the integrally formed arc-shaped arms 3 (2202) and protrusion 2 (2204). The four arc-shaped arms 8 (2304) are all symmetrically arranged, and the arc-shaped arms 8 (2304) are matched with the arc-shaped arms 3 (2202) or arc-shaped arms 4 (2203).

6. A snake-bone structure according to claim 5, characterized in that, The cutting angle of the cutting groove (2305) is 340°, and the cutting angle of two adjacent cutting grooves (2305) is deflected by 20°.

7. A snake-bone structure according to claim 6, characterized in that, The first segment (2101), middle segment (2201), and tail segment (2301) of the snake bone are each provided with several mounting grooves that cooperate with the sealing bladder (301). The limiting member (302) is used to limit and fix the sealing bladder (301) in the mounting groove. The limiting member (302) is welded to the first segment (2101), middle segment (2201), or tail segment (2301) of the snake bone.

8. A snake-bone structure according to claim 7, characterized in that, It also includes several wire fixing components (4), which are respectively located on the first segment (2101), several middle segments (2201) and the tail segment (2301) of the snake bone.

9. A snake-bone structure according to claim 8, characterized in that, The wire fixing assembly (4) includes a through groove (401) and a limiting buckle (402) connected to the inner wall of the through groove (401). The through groove (401) is opened on the first segment (2101) of the snake bone, or the middle segment (2201) of the snake bone, or the tail segment (2301) of the snake bone.

10. An endoscope, characterized in that, The snake bone structure described in any one of claims 1-9 is adopted.

Images