Snake bone and endoscope

Abstract

The utility model discloses a snake bone which comprises a snake bone body and a traction rope, the snake bone body comprises a plurality of child snake bones which are connected end to end, the two sides of each child snake bone protrude outwards to form connecting parts, the corresponding connecting parts on every two adjacent child snake bones are rotationally connected through a pin shaft, and the pin shafts are welded to the connecting parts facing the outer side. The traction rope penetrates through the snake bone body and pulls the child snake bones to rotate along the central axis of the pin shaft. The hinge pin has the advantages that a welding mode replaces a traditional connection mode, the whole installation process is simple and easy to operate, the welding mode is firmer, and the hinge pin is not prone to falling off.

Description

Technical Field

[0001] This utility model belongs to the medical field, specifically relating to a snake bone and an endoscope. Background Technology

[0002] The snake bone, as the curved part of the endoscope, plays a guiding and steering role. In the existing technology, adjacent sub-snake bones are hinged by a pin, and an anti-detachment structure is installed at the other end of the pin. However, because the snake bone body has a small diameter, it is extremely inconvenient to install the anti-detachment structure. Utility Model Content

[0003] The purpose of this invention is to provide a snake bone and an endoscope.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A snake skeleton includes a snake skeleton body and a traction rope. The snake skeleton body includes several sub-snake skeletons connected end to end. Each sub-snake skeleton has a connecting part protruding outward on both sides. Corresponding connecting parts on two adjacent sub-snake skeletons are rotatably connected by a pin. The pin is welded to the connecting part facing outward. The traction rope passes through the snake skeleton body and pulls the sub-snake skeleton to rotate along the central axis of the pin.

[0006] Preferably, the sub-snake bone is provided with two opposing arc-shaped plates, which together with the inner wall of the sub-snake bone form a threading hole for the traction rope to pass through.

[0007] Preferably, the arc-shaped plate is formed by a portion of the bone wall of the snake bone being recessed inward.

[0008] Preferably, both connecting portions at one end of the sub-snake bone are offset inward toward the bone wall so as to be misaligned and fitted with the connecting portion at the other end of the other adjacent snake bone body.

[0009] Preferably, the outer side of the connecting portion located on the outer side is recessed inward to form a groove for receiving the end of the pin.

[0010] Preferably, the length direction of the traction rope is the same as the length direction of the snake bone body and perpendicular to the central axis of the pin.

[0011] An endoscope comprising the snake bone described in any of the preceding claims.

[0012] The beneficial effects of this utility model are: by replacing the traditional connection method with welding, the entire installation process is simple and easy to operate, and the welding method is more secure, making it less likely for the pin to fall off. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the structure of the snake bone in Embodiment 1 of this utility model.

[0015] Figure 3 This is a schematic diagram of the structure of two adjacent sub-snake bones in this utility model.

[0016] Figure 4 This is a schematic diagram of the sub-snake bone structure in Embodiment 2 of this utility model.

[0017] The components include: snake bone body 10, sub-snake bone 12, connecting part 14, pin 16, arc plate 18, and groove 20. Detailed Implementation

[0018] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0019] like Figures 1 to 3 As shown, the present invention provides a snake skeleton, including a snake skeleton body 10 and a traction rope. The snake skeleton body 10 includes several sub-snake skeletons 12 connected end to end. Both sides of the sub-snake skeletons 12 have outwardly protruding connecting parts 14. The corresponding connecting parts 14 on two adjacent sub-snake skeletons 12 are rotatably connected by a pin 16. The pin 16 is welded to the connecting parts 14 facing outward. The traction rope passes through the snake skeleton body 10 and pulls the sub-snake skeletons 12 to rotate along the central axis of the pin 16.

[0020] Several sub-snake bones 12 are connected end to end, with connecting parts 14 protruding from the sub-snake bones 12, creating a certain gap between adjacent sub-snake bones 12 to facilitate rotation. Two connecting parts 14 are connected by a pin 16, allowing the two sub-snake bones 12 to rotate along the central axis of the spool. The end of the pin 16 is welded to the connecting part 14, making it difficult for the pin 16 to detach from the connecting part 14. The welded part is located on the outer side of the connecting part 14 for easy welding. The sub-snake bones 12 are rotated along the center line of the pin 16 by the traction of the traction rope. The small rotations of multiple sub-snake bones 12 allow the entire snake bone body 10 to rotate over a large range.

[0021] The sub-snake bone 12 is provided with two opposing arc-shaped plates 18. The arc-shaped plates 18 and the inner wall of the sub-snake bone 12 form a threading hole for the traction rope to pass through. The traction rope is limited by the threading hole. The arc-shaped plates 18 are set inside the snake bone body 10 so that the traction rope is less likely to get tangled with external materials.

[0022] The arc-shaped plate 18 is formed by a portion of the bone wall of the snake bone 12 being recessed inward; it can be made by stamping or integral molding, which is simple to manufacture and makes it easier to thread a traction rope.

[0023] The two connecting parts 14 at one end of the sub-snake bone 12 are offset towards the inner side of the bone wall so as to be misaligned and fitted with the connecting part 14 at the other end of the other adjacent snake bone body 10, so that the sub-snake bones 12 are less likely to interfere with each other during the connection process.

[0024] The length direction of the traction rope is the same as the length direction of the snake bone body 10 and perpendicular to the central axis of the pin 16, so that the force exerted by the traction rope on the snake bone 12 is entirely applied to the turning direction of the snake bone body 10.

[0025] Example 2, as Figure 4 As shown, the difference from Embodiment 1 is that the outer side of the connecting part 14 located on the outside is recessed inward to form a groove 20 for accommodating the end of the pin 16; by accommodating the end of the pin 16 through the groove 20, the outer wall of the entire snake bone body 10 device is smoother and less likely to cause damage to the patient's internal organs and tissues.

[0026] An endoscope comprising any of the aforementioned snake bones.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0028] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A serpentine bone, characterized by: The snake bone body comprises a plurality of first and last jointed sub-snake bones, both sides of the plurality of sub-snake bones are outwardly convex with connecting parts, the corresponding connecting parts on two adjacent sub-snake bones are rotationally connected by a pin shaft, the pin shaft is welded with the outward connecting part, the traction rope penetrates the snake bone body, and the traction rope drives the sub-snake bone to rotate along the central axis of the pin shaft. Two opposite arc-shaped plates are arranged in the sub-snake bone, the arc-shaped plates and the inner wall of the sub-snake bone enclose a threading hole for the traction rope to penetrate; The arc-shaped plate is formed by recessing part of the bone wall of the sub-snake bone inwardly; Both connecting parts at one end of the sub-snake bone are offset to the inner side of the bone wall, so as to be misaligned with the connecting parts at the other end of the other adjacent snake bone body; The outer side of the connecting part on the outer side is recessed inwardly to form a groove for accommodating the end of the pin shaft; The length direction of the traction rope is the same as the length direction of the snake bone body and is perpendicular to the central axis of the pin shaft.

2. An endoscope, characterized by: The snake bone comprises the snake bone as claimed in claim 1.

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