Snake bone bending structure with end anti-falling function

Abstract

The utility model is suitable for the technical field of endoscopic planer tools, and provides a snake bone bending structure with an end head anti-falling function, which comprises a plurality of bone joint units and a cylindrical end head. According to the snake bone bending structure with the end anti-disengaging function, by arranging a limiting ring, a movable ring and a sliding ring, when the end of the device is installed on a connecting cylinder, the connecting cylinder is erected firstly, then the end is erected, and at the moment, the sliding ring in the end moves to the bottommost end under the action of gravity; when the clamping teeth are inserted into the clamping holes, the clamping teeth protrude from the bottom end of the end, the clamping teeth are placed at the top end of the movable ring and then rotate, the movable ring and the movable ring are connected under the action of the internal threads and the external threads, then the end is directly pressed downwards, the clamping teeth are clamped into the clamping holes, and in subsequent use, even if the clamping teeth and the clamping holes break away from each other due to problems, the clamping teeth can be clamped into the clamping holes. And the end head and the connecting cylinder are still connected through the movable ring and the sliding ring, so that the practicability of the structure is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of endoscopic planers, and in particular relates to a snake-bone bending structure with an end anti-falling function. Background Art

[0002] With the widespread development of arthroscopic and endoscopic surgeries, the planing power system has also developed rapidly and been continuously updated. The modern planing power system is a high-performance general surgical tool with the advantages of unobstructed suction, easy cleaning, quick installation and fully waterproof design. The planer is actually composed of two stacked sleeves. Both sleeves have windows. The fixed outer knife tube and the rotating inner core are used to cut at the window at the tip, and the tissue is sucked into the blade edge. The debris is sucked out through the suction device to achieve the cutting purpose. There are many types of planing heads, such as double-sided planers, full-diameter planers, full-diameter toothed planers, round-head grinders or barrel-type grinders.

[0003] The blade structure of a general endoscopic planer is often fixed, but this structure is difficult to operate in some special circumstances, so soft endoscopic planers have also appeared. Soft endoscopic planers can be bent, and can more easily operate inside the patient's body to remove the patient's diseased tissue or other structures. However, the end of the endoscopic planer will be replaced according to the situation during use, which means that the end and the bendable serpentine structure are not integrated, which makes it possible for the end to detach from the serpentine structure and remain inside the patient's body during surgery. Utility Model Content

[0004] The utility model provides a serpentine-bone bending structure with an anti-detachment function for the end, aiming to solve the problem that the end of an endoscopic planer needs to be replaced according to the situation when in use, which means that the end and the bendable serpentine-bone structure are not integrated, which makes it possible for the end to detach from the serpentine-bone structure and remain inside the patient's body during surgery.

[0005] The utility model is realized in this way: a snake bone bending structure with an end head anti-detachment function comprises a plurality of bone joint units and a cylindrical end head;

[0006] A plurality of the joint units are connected end to end to form a snake bone structure, the front end of the most front joint unit is rotatably connected to a connecting tube, and the end head is detachably mounted on the front end of the connecting tube;

[0007] Two limiting rings are fixedly connected to the front end of the connecting tube, a movable ring is movably arranged between the two limiting rings, a plurality of limiting columns are laterally fixedly connected to the front end surface of the limiting ring at the rear end, a plurality of limiting holes are laterally penetrated through the surface of the movable ring and respectively correspond to and match the plurality of limiting columns, an extension tube extending forward is laterally fixedly connected to the inner ring surface of the movable ring, and an external thread is arranged at the front end of the outer surface of the extension tube.

[0008] Preferably, a sliding ring is slidably connected to the rear end of the end head along its length direction, and an inner ring surface of the sliding ring is provided with an internal thread that matches the external thread.

[0009] Preferably, a plurality of latching holes are formed through the front end of the outer surface of the connecting tube, and a plurality of latching teeth respectively corresponding to and adapted to the plurality of latching holes are fixedly connected to the rear end of the end head, and the end head is detachably mounted on the front end of the connecting tube through the plurality of latching teeth.

[0010] Preferably, the structures of the multiple joint units are the same, and one of the joint units includes a device ring, and the front and rear end surfaces of the device ring are laterally fixedly connected with connecting seats, and the multiple joint units are rotatably connected to each other through the connecting seats.

[0011] Preferably, the central axes of the connecting tube and the end head are located in the same straight line.

[0012] Preferably, a protective sleeve is sleeved on the middle part of the outer surface of the connecting tube, and the other end of the protective sleeve extends along the length direction of the snake-bone structure.

[0013] Beneficial Effects

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model is a snake-bone bending structure with an anti-detachment function of the end head. By setting a limit ring, a movable ring and a sliding ring, when the end head of the device is installed on the connecting tube, the connecting tube is first erected, and then the end head is also erected. At this time, the sliding ring inside the end head will move to the bottom position under the action of gravity, and will also protrude from the bottom end of the end head. At this time, it is placed on the top of the movable ring and rotated. The two will be connected under the action of internal and external threads, and then the end head is directly pressed downward so that multiple engaging teeth are inserted into the interior of multiple engaging holes. At this time, the end head is connected. In subsequent use, even if the engaging teeth and the engaging holes have problems and separate from each other, the end head and the connecting tube are still connected by the movable ring and the sliding ring, which can prevent the end head from being retained in the patient's body, thereby improving the practicality of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the cross-sectional structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the overall external structure of the utility model;

[0017] Figure 3 It is a structural schematic diagram of the bone segment unit in the utility model.

[0018] In the figure: 1-device ring, 2-connecting seat, 3-connecting tube, 4-limiting ring, 5-limiting column, 6-movable ring, 7-limiting hole, 8-extension tube, 9-external thread, 10-end, 11-clamping tooth, 12-clamping hole, 13-sliding ring, 14-protective sleeve. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0020] See also Figure 1-3 , the utility model provides a technical solution: a snake bone bending structure with an end head anti-detachment function, comprising a plurality of bone joint units and a cylindrical end head 10;

[0021] A plurality of condyle units are connected end to end to form a snake bone structure, the front end of the most front condyle unit is rotatably connected to a connecting tube 3, and the end head 10 is detachably mounted on the front end of the connecting tube 3;

[0022] Two limit rings 4 are fixedly connected to the front end of the connecting tube 3, a movable ring 6 is movably arranged between the two limit rings 4, a plurality of limit columns 5 are laterally fixedly connected to the front end surface of the limit ring 4 at the rear end, a plurality of limit holes 7 corresponding to and matching the plurality of limit columns 5 are laterally penetrated on the surface of the movable ring 6, an extension tube 8 extending forward is laterally fixedly connected to the inner ring surface of the movable ring 6, and an external thread 9 is arranged on the front end of the outer surface of the extension tube 8.

[0023] A sliding ring 13 is slidably connected to the rear end of the end head 10 along its length direction, and an inner ring surface of the sliding ring 13 is provided with an internal thread that matches the external thread 9 .

[0024] The front end of the outer surface of the connecting tube 3 is provided with a plurality of latching holes 12 , and the rear end of the terminal 10 is fixedly connected with a plurality of latching teeth 11 respectively corresponding to and adapted to the plurality of latching holes 12 . The terminal 10 is detachably mounted on the front end of the connecting tube 3 via the plurality of latching teeth 11 .

[0025] The central axes of the connecting tube 3 and the end head 10 are located on the same straight line.

[0026] In this embodiment, when the end 10 of the device needs to be installed on the connecting tube 3, the connecting tube 3 is first erected, and then the end 10 is also erected. At this time, the sliding ring 13 inside the end 10 will move to the bottom position under the action of gravity, and will also protrude from the bottom end of the end 10. At this time, it is placed on the top of the extension tube 8 and rotated. The two will be connected under the action of the internal thread and the external thread 9. Then the end 10 is pressed downward directly so that the multiple engaging teeth 11 are inserted into the multiple engaging holes 12. At this time, the end 10 is connected. In subsequent use, even if the engaging teeth 11 and the engaging holes 12 have problems and are separated from each other, the end 10 and the connecting tube 4 are still connected by the extension tube 8 and the sliding ring 13, which can prevent the end 10 from remaining in the patient's body, thereby improving the practicality of the structure.

[0027] After the connecting tube 3 is erected, the staff can rotate the movable ring 6 until the multiple limiting holes 7 and the multiple limiting columns 5 are aligned. At this time, the multiple limiting columns 5 are inserted into the multiple limiting holes 7 to limit the movable ring 6, and it cannot rotate. At the same time, the extension tube 8 fixedly connected to it is also fixed. In this state, the sliding ring 13 can be stably connected to the extension tube 8. When the device is in use, the engaging teeth 11 of the end head 10 are disengaged from the engaging hole 12, the staff pulls the device outward, the connecting tube 3 moves backward, and the end head 10 maintains the current position under the action of friction, and the two form a relative movement. At this time, the movable ring 6 will be driven to move to the rear of the front fiber ring 4 and disengage from the multiple limiting columns 5. Even if people rotate the device, the movable ring 6 will only rotate synchronously, which will not affect the connection stability between the internal thread and the external thread 9.

[0028] Furthermore, the structures of the multiple joint units are the same, and one of the joint units includes a device ring 1, and the front and rear end surfaces of the device ring 1 are laterally fixedly connected with a connecting seat 2, and the multiple joint units are rotatably connected to each other through the connecting seat 2.

[0029] A protective sleeve 14 is sleeved on the middle part of the outer surface of the connecting tube 3, and the other end of the protective sleeve 14 extends along the length direction of the snake-bone structure.

[0030] In this embodiment, a plurality of bone segment units are interconnected to form a snake-bone structure that can be bent and twisted, so that the device can be operated more conveniently in the patient's body, and the protective sleeve 14 plays a protective role.

[0031] The working principle and use process of the utility model: After the utility model is installed, when the end head 10 of the device needs to be installed on the connecting tube 3, the connecting tube 3 is first erected, and then the end head 10 is also erected. At this time, the sliding ring 13 inside the end head 10 will move to the bottom position under the action of gravity, and will also protrude from the bottom end of the end head 10. At this time, it is placed on the top of the extension tube 8 and rotated. The two will be connected under the action of the internal thread and the external thread 9. Then the end head 10 is pressed downward directly so that the multiple engaging teeth 11 are inserted into the multiple engaging holes 12. At this time, the end head 10 is connected. In subsequent use, even if the engaging teeth 11 and the engaging holes 12 have problems and are separated from each other, the end head 10 and the connecting tube 4 are still connected by the extension tube 8 and the sliding ring 13, which can prevent the end head 10 from being retained in the patient's body, thereby improving the practicality of the structure.

[0032] 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 bending structure with an end-stopping function, characterized in that: It comprises a plurality of bone joint units and a cylindrical end (10); A plurality of the joint units are connected end to end to form a snake bone structure, the front end of the most front joint unit is rotatably connected to a connecting tube (3), and the end head (10) is detachably mounted on the front end of the connecting tube (3); Two limiting rings (4) are fixedly connected to the front end of the connecting tube (3), a movable ring (6) is movably arranged between the two limiting rings (4), a plurality of limiting columns (5) are transversely fixedly connected to the front end surface of the limiting ring (4) at the rear end, a plurality of limiting holes (7) corresponding to and matching the plurality of limiting columns (5) are transversely penetrated on the surface of the movable ring (6), an extension tube (8) extending forward is transversely fixedly connected to the inner ring surface of the movable ring (6), and an external thread (9) is arranged on the front end of the outer surface of the extension tube (8).

2. A snake-bone bending structure with an end-stopping function as claimed in claim 1, characterized in that: A sliding ring (13) is slidably connected to the rear end of the end head (10) along its length direction, and an inner ring surface of the sliding ring (13) is provided with an internal thread that matches the external thread (9).

3. A snake-bone bending structure with an end-stopping function as claimed in claim 1, characterized in that: The front end of the outer surface of the connecting tube (3) is provided with a plurality of latching holes (12), and the rear end of the end head (10) is fixedly connected with a plurality of latching teeth (11) respectively corresponding to and matching the plurality of latching holes (12), and the end head (10) is detachably mounted on the front end of the connecting tube (3) via the plurality of latching teeth (11).

4. A snake-bone bending structure with an end-piece anti-falling function as claimed in claim 1, characterized in that: The structures of the multiple bone joint units are the same, and one of the bone joint units comprises a device ring (1), and the front and rear end surfaces of the device ring (1) are both laterally fixedly connected with a connecting seat (2), and the multiple bone joint units are rotatably connected to each other through the connecting seat (2).

5. The snake-bone bending structure with end-piece anti-falling function as claimed in claim 1, characterized in that: The central axes of the connecting tube (3) and the end head (10) are located on the same straight line.

6. The snake-bone bending structure with end-piece anti-falling function as claimed in claim 1, characterized in that: A protective sleeve (14) is sleeved on the middle part of the outer surface of the connecting tube (3), and the other end of the protective sleeve (14) extends along the length direction of the snake-bone structure.

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