A distraction device for lumbar UBE surgery
By designing a left and right clamping and dispersing device for lumbar spine UBE surgery, the problem of unsatisfactory visual exposure during lumbar spine UBE surgery was solved, achieving stable traction without the need for an assistant and convenient operation, thus improving surgical safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANG HAI SI YI YI YI YUAN
- Filing Date
- 2025-04-23
- Publication Date
- 2026-06-26
AI Technical Summary
Current lumbar spine UBE surgery requires an assistant to hold a nerve root retractor to provide a surgical field of view, which results in unsatisfactory surgical field exposure and inconvenience in operation.
Design a traction and dispersing device including a left clamp and a right clamp. The left clamp is embedded into the vertebral lamina bone surface through a bone surface insert, and the traction part of the right clamp pulls the nerve root and dural sac. The surgical field is exposed by the dispersing insert and fixed by the clamping component to prevent slippage.
It enables stable and full exposure of the surgical field without the need for an assistant, improving surgical safety and ease of operation.
Smart Images
Figure CN224403697U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device technology, and in particular to a traction and spreading device for lumbar spine UBE surgery. Background Technology
[0002] Unilateral biportal endoscopy (UBE) is a minimally invasive spinal surgery designed specifically for the treatment of lumbar spine diseases. It is characterized by minimal trauma and rapid recovery.
[0003] After exposing the posterior margin of the lamina, the lower margin of the superior lamina, the upper margin of the inferior lamina, and the medial margin of the facet joints need to be burred to expose the nerve root and dura mater. When dealing with herniated discs and nuclei, the nerve root obstructing the view needs to be retracted medially and inferiorly to expose the surgical field. In current techniques, during UBE surgery, an assistant generally needs to hold a nerve root retractor to retract the nerve root to provide a surgical field, which results in unsatisfactory surgical field exposure and inconvenience in operation.
[0004] Therefore, there are still shortcomings and deficiencies in the existing technology. How to provide a traction and dispersing device for lumbar spine UBE surgery that can stably and fully expose the surgical field without the help of an assistant is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content
[0005] The purpose of this invention is to provide a traction and dispersing device for lumbar spine UBE surgery, which solves the technical problem that in the prior art, when performing UBE surgery, an assistant generally needs to hold a nerve root retractor to retract the nerve root to provide a surgical field, which results in an unsatisfactory surgical field exposure and inconvenient operation.
[0006] To achieve the above objectives, this utility model provides a traction and dispersing device for lumbar spine UBE surgery, comprising:
[0007] The left clamp body has an internal insertion part at one end, the internal insertion part is connected to a placement part, and the placement part has a bone surface embedding body;
[0008] The right clamp body is rotatably connected to the left clamp body and can be fixed relative to it. One end of the right clamp body is provided with a traction part, which is used to pull the nerve root and dural sac apart. The traction part is connected to a spreading extension body.
[0009] The bone-surface insert is located on the side of the placement portion away from the right clamp body, and the spreading insert is positioned on the side away from the left clamp body.
[0010] Preferably, it further includes a clamping assembly for relatively fixing the left clamp and the right clamp, the clamping assembly comprising:
[0011] The limiting component has a limiting tooth on one side;
[0012] The retaining member has a retaining part on the side near the limiting member for engaging with the limiting tooth;
[0013] An elastic element is provided on the left clamp body to abut against the clamping element in order to fix the limiting element.
[0014] Preferably, the left clamp body is provided with a first limiting groove and a second limiting groove that are interconnected, the limiting member is provided in the first limiting groove, and the clamping member is provided in the second limiting groove.
[0015] Preferably, the elastic element is a spring sheet.
[0016] Preferably, the length of the internal extension of the left clamp is less than the length of the pulling part of the right clamp.
[0017] Preferably, the pulling part of the right clamp body has a recessed part, the recessed part is located on the side of the pulling part close to the left clamp body, and the cross-section of the recessed part is arc-shaped.
[0018] Preferably, the number of bone-surface inserts is two.
[0019] Preferably, the other end of the left clamp body is provided with a first gripping part, and the other end of the right clamp body is provided with a second gripping part.
[0020] Preferably, the left clamp body and the right clamp body are hinged by a pin.
[0021] Compared to the aforementioned background technology, the traction and dispersing device for lumbar spine UBE surgery provided by this utility model has a left clamp body with a fixing part that is placed on the upper vertebral lamina and the inner bone surface of the facet joint after being drilled. The bone surface insert is embedded in the bone surface to prevent slippage and rotation. The right clamp body with a dispersing extension is inserted into the ventral side of the nerve root. As the left and right clamp bodies rotate, they are dispersing. The traction part of the right clamp body can appropriately pull the nerve root and dural sac apart, expose the intervertebral disc, provide a surgical field, facilitate operation, require no assistant assistance, and improve surgical safety. Attached Figure Description
[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.
[0023] Figure 1This is a schematic diagram of the traction and spreading device for lumbar spine UBE surgery provided in an embodiment of the present invention.
[0024] Figure 2 An exploded view of the traction and dispersing device for lumbar spine UBE surgery provided in an embodiment of this utility model;
[0025] Figure 3 This is a schematic diagram of the placement part in the traction and spreading device for lumbar spine UBE surgery provided in an embodiment of the present invention.
[0026] Figure 4 This is a schematic diagram of the structure of the traction and spreading device for lumbar spine UBE surgery provided in this embodiment of the utility model, which spreads out the inserted body.
[0027] Figures 1 to 4 Chinese reference numerals: 10, left clamp body; 11, internal insertion part; 12, placement part; 13, bone surface embedding body; 14, first limiting groove; 15, second limiting groove; 16, first gripping part; 20, right clamp body; 21, traction part; 211, recessed part; 22, spreading insertion part; 23, second gripping part; 30, clamping assembly; 31, limiting part; 311, limiting tooth; 32, clamping part; 321, clamping part; 33, elastic part; 40, pin. Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0029] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0030] This invention provides a traction and dispersing device for lumbar spine UBE surgery. By dispersing the left clamp body 10 and the right clamp body 20, the degree of traction on the nerve root and dural sac is stabilized, and the degree of traction is adjustable without the need for an assistant.
[0031] Please refer to this as well. Figures 1 to 4 The traction and dispersing device for lumbar spine UBE surgery provided by this utility model includes a left clamp body 10 and a right clamp body 20.
[0032] One end of the left clamp body 10 is provided with an internal insertion part 11, which is connected to a placement part 12. The placement part 12 has a rectangular structure and is provided with a bone surface embedding body 13. In this embodiment, the bone surface embedding body 13 is a cone-shaped fixed tooth. The right clamp body 20 is rotatably connected to the left clamp body 10 and can be fixed relative to it. One end of the right clamp body 20 is provided with a traction part 21. The traction part (21) is used to pull the nerve root and dural sac apart. The traction part 21 is connected to a spreading insertion body 22.
[0033] The bone surface insert 13 is located on the side of the placement part 12 away from the right clamp body 20, and the extended body 22 is positioned towards the side away from the left clamp body 10.
[0034] In use, the placement part 12 of the left clamp 10 is placed on the upper vertebral lamina and the inner bone surface of the facet joint after being drilled. The bone surface embedding part 13 is used to embed into the bone surface to prevent slippage and rotation. The spreading extension part 22 of the right clamp 20 is extended into the ventral side of the nerve root, so that the left clamp 10 and the right clamp 20 rotate and spread apart. The nerve root and dural sac are appropriately pulled apart by the traction part 21 of the right clamp 20 to expose the intervertebral disc, so that the intervertebral disc can be operated.
[0035] With this setup, using the spreading device provided in this embodiment, the surgical field can be fully exposed without the need for an assistant, achieving stable traction of the nerve root, which is convenient to operate and improves surgical safety.
[0036] Furthermore, the internal insertion member 11 is cylindrical, and its size gradually decreases from the end of the internal insertion member 11 furthest from the placement part 12. Similarly, the size of the pulling part 21 gradually decreases from the end of the pulling part 21 furthest from the end of the expanding insertion body 22.
[0037] Please refer to this as well. Figures 1 to 4 The traction and spreading device for lumbar spine UBE surgery provided by this utility model also includes a clamping component 30 for relatively fixing the left clamp body 10 and the right clamp body 20. The clamping component 30 includes a limiting member 31, a clamping member 32 and an elastic member 33.
[0038] The limiting member 31 has an arc-shaped structure. One side of the limiting member 31 is provided with a limiting tooth 311, which is arranged along the arc surface of the limiting member 31. The holding member 32 is provided with a holding part 321 for engaging with the limiting tooth 311 on the side near the limiting member 31. The holding part 321 is a protrusion provided on the holding member 32. The elastic member 33 is provided on the left clamp body 10. The elastic member 33 is used to abut against the holding member 32 to fix the limiting member 31.
[0039] In use, depending on the specific situation, the limiting teeth 311 at different positions on the limiting member 31 engage with the holding part 321 of the holding member 32, and the holding member 32 is fixed by the elastic member 33, thereby fixing the left clamp body 10 and the right clamp body 20.
[0040] By setting the clamping component 30, when the traction part 21 of the right clamp 20 appropriately pulls the nerve root and dural sac apart and exposes the intervertebral disc, the left clamp 10 and the right clamp 20 can be relatively fixed, avoiding slippage between the left clamp 10 and the right clamp 20, improving stability, and ensuring stable exposure of the surgical field.
[0041] Please refer to this as well. Figures 1 to 4 The left clamp body 10 is provided with a first limiting groove 14 and a second limiting groove 15 that are interconnected. The limiting member 31 is provided in the first limiting groove 14, and the clamping member 32 is provided in the second limiting groove 15.
[0042] In this embodiment, the size of the first limiting groove 14 is smaller than the size of the second limiting groove 15. The limiting member 31 is disposed in the first limiting groove 14 and can move within the first limiting groove 14. Thus, depending on the degree of opening of the left clamp body 10 and the right clamp body 20, the limiting teeth 311 at different positions of the limiting member 31 can engage with the holding part 321 of the holding member 32.
[0043] Please refer to this as well. Figures 1 to 4 The elastic element 33 is a spring sheet. Specifically, one end of the spring sheet is fixedly mounted on the left clamp body 10.
[0044] Please refer to this as well. Figures 1 to 4 The length of the internal insertion part 11 of the left clamp body 10 is less than the length of the pulling part 21 of the right clamp body 20. Specifically, the length of the internal insertion part 11 is 15mm shorter than the length of the pulling part 21.
[0045] Please refer to this as well. Figures 1 to 4 The right clamp body 20 has a recessed portion 211 in the traction part 21. The recessed portion 211 is located on the side of the traction part 21 close to the left clamp body 10. The cross-section of the recessed portion 211 is arc-shaped, which facilitates observation of the exposed surgical field.
[0046] Please refer to this as well. Figures 1 to 4 There are two bone surface inserts 13. After the placement part 12 of the left clamp body 10 is placed on the bone surface of the upper vertebral lamina and the inner side of the facet joint after being drilled, it is embedded in the bone surface through the two bone surface inserts 13 to avoid slippage and rotation.
[0047] Please refer to this as well. Figures 1 to 4The left clamp body 10 has a first gripping part 16 at one end, and the right clamp body 20 has a second gripping part 23 at the other end. By providing the first gripping part 16 and the second gripping part 23, it is easy to operate and convenient to drive the left clamp body 10 and the right clamp body 20 to rotate.
[0048] In this embodiment, the first grip portion 16 and the second grip portion 23 are annular to facilitate gripping and applying pressure with the fingers. In other embodiments, the first grip portion 16 and the second grip portion 23 may also be arc-shaped, and there is no specific limitation.
[0049] Please refer to this as well. Figures 1 to 4 The left clamp body 10 and the right clamp body 20 are hinged together by a pin 40. Specifically, the middle part of the left clamp body 10 and the middle part of the right clamp body 20 are connected by a pin 40.
[0050] The specific usage process of the traction and spreading device for lumbar spine UBE surgery provided by this utility model is as follows: The placement part 12 of the left clamp body 10 is placed on the upper vertebral lamina and the inner bone surface of the facet joint after being drilled. The bone surface embedding body 13 is embedded into the bone surface to prevent slippage and rotation. The spreading extension body 22 of the right clamp body 20 is extended into the ventral side of the nerve root. The left clamp body 10 and the right clamp body 20 are spread apart by rotating between the first gripping part 16 and the second gripping part 23. The nerve root and dural sac are appropriately pulled apart by the traction part 21 of the right clamp body 20 to expose the intervertebral disc. The limiting teeth 311 on the limiting member 31 are engaged with the holding part 321 of the holding member 32. The elastic member 33 abuts against the holding member 32 to fix the left clamp body 10 and the right clamp body 20 relatively, to prevent slippage and ensure that the surgical field is stably exposed, so that the intervertebral disc can be operated on.
[0051] The traction and spreading device for lumbar spine UBE surgery provided by this utility model has a simple structure and is easy to use. By spreading the left clamp body 10 and the right clamp body 20, the degree of traction on the nerve root and dural sac is stabilized, and the degree of traction is adjustable. Stable traction of the nerve root can be achieved without the help of an assistant, thus improving the safety of the operation.
[0052] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.
[0053] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of this utility model.
Claims
1. A traction and dispersing device for lumbar spine UBE surgery, characterized in that, include: The left clamp body (10) has an internal insertion part (11) at one end, the internal insertion part (11) is connected to a placement part (12), and the placement part (12) is provided with a bone surface embedding part (13); The right clamp body (20) is rotatably connected to the left clamp body (10) and can be fixed relative to it. One end of the right clamp body (20) is provided with a traction part (21). The traction part (21) is used to pull the nerve root and dural sac apart. The traction part (21) is connected to a spreading insertion body (22). The bone surface insert (13) is located on the side of the placement part (12) away from the right clamp body (20), and the spreading extension body (22) is disposed on the side away from the left clamp body (10).
2. The traction and dispersing device for lumbar spine UBE surgery according to claim 1, characterized in that, It also includes a clamping assembly (30) for relatively fixing the left clamp (10) and the right clamp (20), the clamping assembly (30) comprising: A limiting component (31) is provided on one side, wherein a limiting tooth (311) is provided; The retaining member (32) has a retaining part (321) on the side near the limiting member (31) for engaging with the limiting tooth (311); An elastic element (33) is provided on the left clamp body (10) for abutting against the clamping element (32) to fix the limiting element (31).
3. The traction and dispersing device for lumbar spine UBE surgery according to claim 2, characterized in that, The left clamp body (10) is provided with a first limiting groove (14) and a second limiting groove (15) that are interconnected. The limiting member (31) is provided in the first limiting groove (14), and the holding member (32) is provided in the second limiting groove (15).
4. The traction and dispersing device for lumbar spine UBE surgery according to claim 2, characterized in that, The elastic element (33) is a spring sheet.
5. The traction and dispersing device for lumbar spine UBE surgery according to claim 1, characterized in that, The length of the internal insertion part (11) of the left clamp (10) is less than the length of the pulling part (21) of the right clamp (20).
6. The traction and dispersing device for lumbar spine UBE surgery according to claim 1, characterized in that, The right clamp (20) has a recessed portion (211) in its pulling part (21). The recessed portion (211) is located on the side of the pulling part (21) close to the left clamp (10), and the cross-section of the recessed portion (211) is arc-shaped.
7. The traction and dispersing device for lumbar spine UBE surgery according to claim 1, characterized in that, The number of bone surface inserts (13) is two.
8. The traction and dispersing device for lumbar spine UBE surgery according to claim 1, characterized in that, The left clamp body (10) is provided with a first gripping part (16) at the other end, and the right clamp body (20) is provided with a second gripping part (23) at the other end.
9. The traction and dispersing device for lumbar spine UBE surgery according to claim 1, characterized in that, The left clamp (10) and the right clamp (20) are hinged together by a pin (40).