A lumbar spine expandable under-mirror fusion channel

Abstract

The utility model is suitable for lumbar vertebra operation instrument technical field, provides a kind of lumbar vertebra can be opened under mirror fusion channel, comprising: for placing intervertebral distraction fusion channel of distractor;Channel adjusting assembly for adjusting the width of fusion channel;The bottom of the fusion channel is equipped with nerve protection drag hook, and the nerve protection drag hook is used to form protection to nerve root, the beneficial effects of the utility model lie in that fusion channel can be opened or adjustable effect by channel adjusting assembly, so that fusion channel can be placed into existing any specification, outside normal interbody fusion device;At the same time, through the nerve protection drag hook of fusion channel bottom, nerve root can be pushed away, to form protection to it, can effectively reduce the risk of nerve root injury.

Description

Technical Field

[0001] This utility model belongs to the field of lumbar spine surgical instruments technology, and in particular relates to a lumbar spine expandable endoscopic fusion channel. Background Technology

[0002] In orthopedic spinal treatment, intervertebral fusion has been widely used. During the operation, an intervertebral diffuser is used to open the intervertebral space of the spine and enlarge the intervertebral foramen to reduce compression on the nerve root structures.

[0003] In practical applications, it is necessary to first construct a channel to ensure the insertion channel of the intervertebral spacer. In existing technologies, due to the differences in the size of the intervertebral spacers, the insertion channel is not compatible with the intervertebral spacer, making replacement inconvenient and posing a risk of damaging the nerve root. Utility Model Content

[0004] The purpose of this utility model embodiment is to provide a lumbar vertebral fusion channel that can be opened under endoscopy, aiming to solve the technical problems existing in the prior art mentioned in the background art.

[0005] This utility model embodiment is implemented as follows: a lumbar spine expandable endoscopic fusion channel includes:

[0006] Fusion channel for placing intervertebral spreaders;

[0007] Channel adjustment components used to adjust the width of the fusion channel;

[0008] The bottom of the fusion channel is equipped with a nerve protection hook, which is used to protect the nerve root.

[0009] As a preferred technical solution, the fusion channel includes a first shell and a second shell with the same structure and opposite positions. The first shell and the second shell are provided with through grooves on opposite sides to form a channel for placing an intervertebral spreader. The nerve protection hook is disposed at the bottom of at least one of the first shell and the second shell.

[0010] As a preferred technical solution, the channel adjustment assembly includes a base and a first tubular body and a second tubular body that are fixedly connected to the first outer shell and the second outer shell respectively. The first tubular body and the second tubular body are slidably mounted on the outside of the base. At least one of the first tubular body and the second tubular body is provided with a driving mechanism for driving the first tubular body and / or the second tubular body to move along the base.

[0011] As a preferred technical solution, the driving mechanism includes an adjustment knob, which is mounted on a mounting base provided on the first tubular body and / or the second tubular body. A gear coaxial with the bottom of the adjustment knob is provided, and the gear meshes with teeth provided on the base body for transmission.

[0012] As a preferred technical solution, both the first tubular body and the second tubular body are hinged with a safety lever by a torsion spring, so that the safety lever abuts against the teeth.

[0013] As a preferred technical solution, the fusion channel further includes mating holes disposed on the first housing and the second housing, the mating holes being used to install the channel adjustment assembly.

[0014] As a preferred technical solution, the driving mechanism includes two adjustment knobs, namely a coarse adjustment knob and a fine adjustment knob. The coarse adjustment knob and the fine adjustment knob are mounted on the mounting base provided on the first tubular body and the second tubular body. A gear coaxial with the bottom of the adjustment knob is provided, and the gear meshes with the teeth provided on the base body for transmission.

[0015] The beneficial effects of this utility model are that the fusion channel can be expanded or adjusted through the channel adjustment component, so that the fusion channel can accommodate any existing size of ordinary intervertebral fusion device on the outside. In addition, the fusion channel can also be used as a bone graft channel to place bone graft funnels of various sizes. At the same time, the nerve protection hook at the bottom of the fusion channel can be used to separate the nerve root to form protection for it, which can effectively reduce the risk of nerve root damage. Attached Figure Description

[0016] Figure 1 A schematic diagram of a lumbar vertebral fusion channel that can be opened under endoscopy is provided for an embodiment of this utility model;

[0017] Figure 2 An exploded view of a lumbar fusion channel that can be opened under endoscopy, provided for an embodiment of this utility model;

[0018] Figure 3 A top view of a lumbar fusion channel that can be opened under endoscopy, provided for an embodiment of this utility model.

[0019] In the diagram: 1-Intervertebral spacer, 2-Fusion channel, 201-First outer shell, 202-Second outer shell, 203-Through groove, 204-Nerve protection hook, 205-Matching hole, 3-Channel adjustment assembly, 301-First tubular body, 302-Second tubular body, 303-Adjustment knob, 304-Base, 305-Tooth, 306-Mounting base, 307-Safety lever. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0021] It is understood that the terms “first,” “second,” etc., used in this application may be used herein to describe various elements, but unless otherwise stated, these elements are not limited by these terms. These terms are used only to distinguish one element from another.

[0022] like Figures 1-3 As shown, in one embodiment, a lumbar vertebral expandable endoscopic fusion channel is proposed, comprising:

[0023] Fusion channel 2 for placing intervertebral diffuser 1;

[0024] Channel adjustment component 3 is used to adjust the width of fusion channel 2;

[0025] The bottom of the fusion channel 2 is provided with a nerve protection hook 204, which is used to protect the nerve root.

[0026] In this embodiment of the invention, the intervertebral spacer 1 is used to open the intervertebral space of the spine and enlarge the intervertebral foramen to reduce compression on the nerve root structure. In this embodiment of the invention, the intervertebral spacer 1 can have a multi-level inner core (generally a three-level structure) to ensure the smooth placement of the fusion device while restoring the height of the intervertebral space. Further details are omitted here. The channel adjustment component 3 is used to adjust the width of the fusion channel 2, allowing the fusion channel 2 to accommodate any existing size of conventional lateral intervertebral fusion device. In addition, the fusion channel 2 can also serve as a bone graft channel to place various sizes of bone graft funnels. In this embodiment of the invention, the nerve protection hook 204 is used to protect the nerve root. In practical applications, since this embodiment of the invention is performed endoscopically, the nerve root is visible. Based on this, the nerve protection hook 204 at the bottom of the fusion channel 2 can be used to open the nerve root to protect it, effectively reducing the risk of nerve root injury.

[0027] like Figure 2 As shown, in a preferred embodiment of the present invention, the fusion channel 2 includes a first outer shell 201 and a second outer shell 202 with the same structure and opposite positions. The first outer shell 201 and the second outer shell 202 are provided with through grooves 203 on opposite sides to form a channel for placing the intervertebral spreader 1. The nerve protection hook 204 is disposed at the bottom of at least one of the first outer shell 201 and the second outer shell 202.

[0028] In this embodiment of the present invention, the first outer shell 201 and the second outer shell 202 are L-shaped structures, and the through grooves 203 opened on their opposite sides form a channel for accommodating the intervertebral spreader 1. The channel is a square structure.

[0029] like Figure 2 As shown, in a preferred embodiment of the present invention, the channel adjustment assembly 3 includes a base 304 and a first tubular body 301 and a second tubular body 302 respectively fixedly connected to the first outer shell 201 and the second outer shell 202. The first tubular body 301 and the second tubular body 302 are slidably mounted on the outside of the base 304. At least one of the first tubular body 301 and the second tubular body 302 is provided with a driving mechanism for driving the first tubular body 301 and / or the second tubular body 302 to move along the base 304.

[0030] In this embodiment of the present invention, the first tubular body 301 and the second tubular body 302 are both square tubular structures. In practical applications, they can also be flat tubes, round tubes, or other structures. In order to improve the lightweight effect, the first tubular body 301, the second tubular body 302, and the aforementioned first outer shell 201 and second outer shell 202 can also be hollowed out to improve the convenience of operation. In practical applications, the first tubular body 301 and / or the second tubular body 302 can be moved relative to the base 304 by a driving mechanism.

[0031] like Figure 2 and Figure 3 As shown, in a preferred embodiment of the present invention, the driving mechanism includes an adjustment knob 303, which is mounted on a mounting base 306 provided on the first tubular body 301 and / or the second tubular body 302. The bottom of the adjustment knob 303 is provided with a gear coaxial with it, and the gear meshes with teeth 305 provided on the base 304 for transmission.

[0032] In practical application, rotating the adjustment knob 303 causes the coaxial gear to rotate synchronously. Through the meshing action of the teeth, the first tubular body 301 and / or the second tubular body 302 move relative to the base 304. In this embodiment, the number of adjustment knobs 303 can be one or two, depending on the user's needs.

[0033] like Figure 2 As shown, in a preferred embodiment of the present invention, both the first tubular body 301 and the second tubular body 302 are hinged with a safety lever 307 by a torsion spring, so that the safety lever 307 abuts against the tooth 305.

[0034] In this embodiment of the utility model, the safety lever 307 is a strip-shaped structure. Under normal circumstances, it abuts against the teeth 305 under the action of the torsion spring. When it is necessary to adjust the size of the fusion channel 2, the safety lever 307 can be opened first, and then the adjustment knob 303 can be rotated. After the size of the fusion channel 2 is adjusted, the safety lever 307 is released, and the safety lever 307 automatically resets under the action of the torsion spring.

[0035] like Figure 2 As shown, in a preferred embodiment of the present invention, the fusion channel 2 further includes a mating hole 205 disposed on the first housing 201 and the second housing 202, the mating hole 205 being used to install the channel adjustment component 3.

[0036] like Figure 2 and Figure 3 As shown, in a preferred embodiment of the present invention, the driving mechanism includes two adjustment knobs 303, namely a coarse adjustment knob and a fine adjustment knob. The coarse adjustment knob and the fine adjustment knob are mounted on the mounting base 306 provided on the first tubular body 301 and the second tubular body 302. The bottom of the adjustment knob 303 is provided with a gear coaxial with it, and the gear meshes with the teeth 305 provided on the base 304 for transmission.

[0037] In this embodiment of the present invention, the number of adjustment knobs 303 is limited to two, namely a coarse adjustment knob and a fine adjustment knob. Of course, there are differences in the size and number of teeth between the coarse adjustment knob and the fine adjustment knob. The corresponding teeth 305 on the base 304 also need to be adjusted. Of course, as long as fine adjustment and coarse adjustment can be achieved, this embodiment of the present invention does not impose specific limitations.

[0038] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0039] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

[0040] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A lumbar vertebral fusion channel that can be opened for endoscopic fusion, comprising: Fusion channel (2) for placing intervertebral expander (1); Channel adjustment component (3) for adjusting the width of the fusion channel (2); Its features are: The bottom of the fusion channel (2) is provided with a nerve protection hook (204), which is used to protect the nerve root.

2. The lumbar vertebral fusion channel that can be opened under endoscopy according to claim 1, characterized in that, The fusion channel (2) includes a first shell (201) and a second shell (202) with the same structure and opposite positions. The first shell (201) and the second shell (202) are provided with through grooves (203) on opposite sides to form a channel for placing the intervertebral spreader (1). The nerve protection hook (204) is provided at the bottom of at least one of the first shell (201) and the second shell (202).

3. The lumbar vertebral fusion channel that can be opened under endoscopy according to claim 2, characterized in that, The channel adjustment assembly (3) includes a base (304) and a first tubular body (301) and a second tubular body (302) fixedly connected to the first outer shell (201) and the second outer shell (202) respectively. The first tubular body (301) and the second tubular body (302) are slidably mounted on the outside of the base (304). At least one of the first tubular body (301) and the second tubular body (302) is provided with a driving mechanism for driving the first tubular body (301) and / or the second tubular body (302) to move along the base (304).

4. The lumbar vertebral fusion channel that can be opened under endoscopy according to claim 3, characterized in that, The drive mechanism includes an adjustment knob (303), which is mounted on a mounting base (306) provided on the first tubular body (301) and / or the second tubular body (302). The bottom of the adjustment knob (303) is provided with a gear coaxial with it, which meshes with teeth (305) provided on the base (304) for transmission.

5. The lumbar vertebral fusion channel that can be opened under endoscopy according to claim 4, characterized in that, Both the first tubular body (301) and the second tubular body (302) are fitted with a safety lever (307) by a torsion spring, so that the safety lever (307) abuts against the tooth (305).

6. The lumbar vertebral fusion channel that can be opened under endoscopy according to claim 2, characterized in that, The fusion channel (2) further includes a mating hole (205) disposed on the first housing (201) and the second housing (202), the mating hole (205) being used to install the channel adjustment assembly (3).

7. The lumbar vertebral fusion channel that can be opened under endoscopy according to claim 3, characterized in that, The drive mechanism includes two adjustment knobs (303), namely a coarse adjustment knob and a fine adjustment knob. The coarse adjustment knob and the fine adjustment knob are mounted on the mounting base (306) provided on the first tubular body (301) and the second tubular body (302). The bottom of the adjustment knob (303) is provided with a gear coaxial with it, and the gear meshes with the teeth (305) provided on the base (304) for transmission.

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