Cortical bone track screw matched 3D guide plate for lumbar vertebra

Abstract

The utility model relates to the technical field of medical instruments, in particular to a cortical bone track screw matched 3D guide plate for lumbar vertebra, which comprises a guide plate main body, a connecting rod, a mounting plate and a guide device, the connecting rod is fixedly mounted on the guide plate main body, and the mounting plate is fixedly mounted on the connecting rod and positioned at one end, far away from the guide plate main body, of the connecting rod; the guide device is arranged on the mounting plate, the positioning device comprises a mounting block, a fixing clamp, a clamping rod and an adjusting assembly, the mounting block is fixedly mounted on the guide plate body, the fixing clamp is fixedly mounted on the mounting block, an anti-skid pad is further arranged on the inner side of the fixing clamp, and the clamping rod is mounted on the fixing clamp through the adjusting assembly. The clamping rod is pushed to move downwards through the adjusting assembly, so that the clamping rod fixes the guide plate body to a vertebral plate under the cooperation of the non-slip mat on the fixing clamp, the stability of the guide plate body in the operation process is guaranteed, and position deviation of cortical bone track screws is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical equipment technical field especially relates to a cortex bone trajectory screw is matched with 3D guide plate for lumbar vertebrae. BACKGROUND

[0002] Lumbar laminectomy surgery is a common surgical method for treating lumbar diseases, and cortex bone trajectory screws are needed for fixation during surgery. The existing guide plate has the problems of inaccurate positioning and unstable fixation during surgery, which increases the risk of surgery and reduces the efficiency of surgery.

[0003] The existing patent CN211911720U4 cortex bone trajectory screw fixation guide plate for lumbar laminectomy adopts medical imaging technology, computer technology and 3D printing technology to design a simulation artificial substrate according to different patient conditions and surgical methods, which can match the currently widely used artificial lamina and cortex bone trajectory technology, and can guide the accurate removal of the lamina through the set guide mark channel pipe, while the cortex bone screw is placed by the screw guide channel pipe, effectively ensuring the safe and accurate implantation of the screw into the artificial lamina, improving the efficiency, accuracy and safety of the surgery.

[0004] However, in the process of using the existing patent cortex bone trajectory screw fixation guide plate for lumbar laminectomy, the substrate in the device is not fixed on the lamina, which still has the problems of insufficient positioning accuracy and fixation effect of the guide plate, especially in complex anatomical structures, the stability of the guide plate is poor, which easily leads to deviation of the screw and marker needle position, affecting the surgical effect. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a cortex bone trajectory screw matched with 3D guide plate for lumbar vertebrae, which solves the problem that the substrate in the foregoing device is not fixed on the lamina, resulting in insufficient positioning accuracy and fixation effect of the guide plate, especially in complex anatomical structures, the stability of the guide plate is poor, which easily leads to deviation of the screw and marker needle position, affecting the surgical effect.

[0006] To achieve the above-mentioned purpose, the utility model provides a cortex bone trajectory screw matched with 3D guide plate for lumbar vertebrae, which comprises a guide plate body, a connecting rod, a mounting plate and a guide device, the connecting rod is fixedly installed on the guide plate body, the mounting plate is fixedly installed on the connecting rod and located at one end of the connecting rod away from the guide plate body, the guide device is arranged on the mounting plate, further comprising a positioning device, the positioning device comprises a mounting block, a fixed clamp, a clamping rod and an adjusting assembly, the mounting block is fixedly installed on the guide plate body, the fixed clamp is fixedly installed on the mounting block, the inner side of the fixed clamp is further provided with an antiskid pad, and the clamping rod is installed on the fixed clamp through the adjusting assembly.

[0007] The adjusting assembly comprises a fixing sleeve, an adjusting rod and a rotating member, the fixing sleeve is fixedly installed on the fixing clamp and penetrates the fixing clamp, the adjusting rod is screwed through the fixing sleeve and is fixedly connected with the clamping rod, and the rotating member is arranged on the adjusting rod.

[0008] The rotating member comprises a fixing ring and a rotating side rod, the fixing ring is fixedly installed on the adjusting rod, and the rotating side rod is fixedly installed on the fixing ring.

[0009] The guide plate body is further provided with a positioning protrusion and an anti-skid pattern, the positioning protrusion is fixedly installed at the bottom of the guide plate body, and the anti-skid pattern is arranged on the positioning protrusion.

[0010] The guide device comprises a guide channel and a guide groove, the guide channel is fixedly installed on the mounting plate and penetrates the mounting plate, and the guide groove is arranged in the guide channel.

[0011] The utility model discloses a kind of cortical bone trajectory screw supporting 3D guide plate for lumbar vertebra, when using, the guide plate body is placed on human vertebral plate, the setting of the positioning protrusion and the anti-skid pattern arranged at the bottom of the guide plate body can enhance the stability of the guide plate body on vertebral plate, subsequently rotating the rotating side rod drives the fixing ring to rotate, the fixing ring drives the adjusting rod to rotate, since the adjusting rod is screwed with the fixing sleeve on the fixing clamp, the adjusting rod will be moved down when rotating, the adjusting rod drives the clamping rod to move down, the clamping rod is clamped on vertebral plate under the cooperation of the anti-skid pad, so that guide plate body can be stabilized on vertebral plate, after vertebral plate is removed, artificial vertebral plate is implanted, and by the guiding effect of the guide channel and the guide groove, cortical bone trajectory screw enters along the guide channel, and artificial vertebral plate is fixed, so that the movement adjustment of the clamping rod on the fixing clamp is realized by the adjusting assembly to the clamping rod, and the guide plate body is fixed on vertebral plate under the cooperation of the anti-skid pad, so as to guarantee the stability of the guide plate body in the process of operation, avoid position deviation of cortical bone trajectory screw. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiment or prior art description will be briefly introduced.

[0013] Figure 1 It is the overall structure schematic view of the cortical bone trajectory screw supporting 3D guide plate for lumbar vertebra.

[0014] Figure 2It is the connection schematic view of the fixed clamp and the anti-skid pad of the utility model.

[0015] Figure 3 It is the structure schematic view of the guide channel of the utility model.

[0016] In the drawing: 101-guide plate main body, 102-connecting rod, 103-mounting plate, 104-mounting block, 105-fixed clamp, 106-clamping rod, 107-anti-skid pad, 108-fixed sleeve, 109-adjusting rod, 110-fixed ring, 111-rotating side rod, 112-positioning protrusion, 113-anti-skid line, 114-guide channel, 115-guide groove. DETAILED DESCRIPTION

[0017] The embodiments of the utility model are described in detail below, the examples of the embodiments are shown in the drawings, the embodiments described below are exemplary, and are intended to explain the utility model, and can not be understood as the limitation of the utility model.

[0018] The embodiments of the application are:

[0019] Please refer to Figures 1-3 , Figure 1 It is the overall structure schematic view of the 3D guide plate matched with the cortical bone trajectory screw for lumbar vertebra of the utility model, Figure 2 It is the connection schematic view of the fixed clamp and the anti-skid pad of the utility model, Figure 3 It is the structure schematic view of the guide channel of the utility model.

[0020] The utility model provides a kind of 3D guide plate matched with the cortical bone trajectory screw for lumbar vertebra: including guide plate main body 101, connecting rod 102, mounting plate 103 and guide device, still including positioning device, the positioning device includes mounting block 104, fixed clamp 105, clamping rod 106 and adjusting assembly, the adjusting assembly includes fixed sleeve 108, adjusting rod 109 and rotating member, the rotating member includes fixed ring 110 and rotating side rod 111, the guide plate main body 101 still be equipped with positioning protrusion 112 and anti-skid line 113, the guide device includes guide channel 114 and guide groove 115, the base plate in the device described in the foregoing scheme has not been fixed on lamina, leading to the positioning accuracy and fixed effect of guide plate still exist deficiency, especially under complex anatomical structure, the stability of guide plate is poor, easily leading to screw and marker needle position deviation, affect surgical effect problem, the foregoing scheme can be used in the scene of the cortical bone trajectory screw guide plate for lumbar vertebra.

[0021] In the embodiment, the adjusting assembly pushes the clamping rod 106 down, so that the clamping rod 106 is fixed on the lamina under the cooperation of the anti-skid pad 107 on the fixed clamp 105.

[0022] The mounting block 104 is fixedly installed on the guide plate body 101, the fixed clamp 105 is fixedly installed on the mounting block 104, the inner side of the fixed clamp 105 is further provided with a non-slip pad 107, the guide plate body 101 is made of 3D printing technology, the clamping rod 106 is installed on the fixed clamp 105 through the adjusting assembly, the mounting block 104 is fixed on the side edge of the guide plate body 101 through a screw, the fixed clamp 105 is in a C-shaped structure, the clamping rod 106 is in a conical structure, in use, the clamping rod 106 is pushed downward through the adjusting assembly, so that the clamping rod 106 is fixed on the non-slip pad 107 on the fixed clamp 105, so that the guide plate body 101 is fixed on the lamina, thereby ensuring the stability of the guide plate body 101 during the operation process, and avoiding the position deviation of the cortical bone trajectory screw.

[0023] Secondly, the fixed sleeve 108 is fixedly installed on the fixed clamp 105, and the fixed sleeve 108 penetrates the fixed clamp 105; the adjusting rod 109 is screwed through the fixed sleeve 108 and is fixedly connected with the clamping rod 106; the rotating member is arranged on the adjusting rod 109, the inside of the fixed sleeve 108 is provided with a thread, and the adjusting rod 109 is provided with a thread, in use, the adjusting rod 109 is rotated by the rotating member, and the adjusting rod 109 moves downward during rotation, so that the clamping rod 106 moves downward.

[0024] Thirdly, the fixed ring 110 is fixedly installed on the adjusting rod 109; the rotating side rod 111 is fixedly installed on the fixed ring 110, the fixed ring 110 is welded at the top end of the adjusting rod 109, and the rotating side rod 111 is welded at the outer periphery of the fixed ring 110, the fixed ring 110 is rotated by rotating the rotating side rod 111, so that the adjusting rod 109 is rotated.

[0025] Thirdly, the positioning protrusion 112 is fixedly installed at the bottom of the guide plate body 101; the anti-skid pattern 113 is arranged on the positioning protrusion 112, the positioning protrusion 112 is made of rubber material, and the positioning protrusions 112 are arranged at the bottom of the guide plate body 101 in a spaced manner, so that the placing stability of the guide plate body 101 on the lamina can be ensured through the cooperation of the positioning protrusion 112 and the anti-skid pattern 113.

[0026] Finally, the guide channels 114 are fixedly installed on the mounting plate 103, and the guide channels 114 penetrate through the mounting plate 103; the guide grooves 115 are arranged in the guide channels 114, the number of the guide channels 114 is four groups, and the guide channels 114 are distributed on the mounting plate 103, the guide channels 114 are in a cylindrical structure, the guide channels 114 penetrate through from top to bottom, and the guide grooves 115 are thread grooves; in use, the cortical bone trajectory screws are inserted along the guide channels 114, so that the implanting stability of the cortical bone trajectory screws can be ensured.

[0027] In the embodiment, in use, the guide plate body 101 is placed on the lamina of a human body, the stability of the guide plate body 101 on the lamina can be enhanced by arranging the positioning protrusions 112 and the anti-skid lines 113 arranged on the bottom of the guide plate body 101, then the rotating side rod 111 is rotated to drive the fixing ring 110 to rotate, the fixing ring 110 drives the adjusting rod 109 to rotate, because the adjusting rod 109 is threadedly matched with the fixing sleeve 108 on the fixing clamp 105, the adjusting rod 109 moves downward when rotating, the adjusting rod 109 drives the clamping rod 106 to move downward, the clamping rod 106 is clamped on the lamina under the cooperation of the anti-skid pad 107, so that the guide plate body 101 can be stably arranged on the lamina, after the lamina is removed, the artificial lamina is implanted, and the cortical bone trajectory screws are inserted along the guide channels 114 under the guidance of the guide channels 114 and the guide grooves 115, so that the artificial lamina is fixed, so that the clamping rod 106 moves on the fixing clamp 105 under the movement adjustment of the adjusting assembly on the clamping rod 106, and the guide plate body 101 is fixed on the lamina under the cooperation of the anti-skid pad 107, so that the stability of the guide plate body 101 in the surgical process is ensured, and the position deviation of the cortical bone trajectory screws is avoided.

[0028] The above disclosure is only one or more preferred embodiments of the present application, and cannot be used to limit the scope of the rights of the present application, and those skilled in the art can understand that all or part of the above-mentioned embodiments can be implemented, and equivalent changes made according to the claims of the present application still belong to the scope covered by the present application.

Claims

1. A lumbar vertebra cortical bone trajectory screw matching 3D guide plate, comprising a guide plate body, a connecting rod, a mounting plate and a guide device, the connecting rod is fixedly installed on the guide plate body, the mounting plate is fixedly installed on the connecting rod and located at one end of the connecting rod away from the guide plate body, and the guide device is arranged on the mounting plate, characterized in that, It further comprises a positioning device; The positioning device comprises a mounting block, a fixed clamp, a clamping rod and an adjusting assembly, the mounting block is fixedly installed on the guide plate body, the fixed clamp is fixedly installed on the mounting block, the inner side of the fixed clamp is further provided with an anti-skid pad, and the clamping rod is installed on the fixed clamp through the adjusting assembly.

2. The lumbar vertebra cortical bone trajectory screw matching 3D guide plate according to claim 1, characterized in that, The adjusting assembly comprises a fixed sleeve, an adjusting rod and a rotating member, the fixed sleeve is fixedly installed on the fixed clamp, and the fixed sleeve penetrates the fixed clamp; the adjusting rod is screwed through the fixed sleeve and is fixedly connected with the clamping rod; and the rotating member is arranged on the adjusting rod.

3. The lumbar vertebra cortical bone trajectory screw matching 3D guide plate according to claim 2, characterized in that, The rotating member comprises a fixed ring and a rotating side rod, the fixed ring is fixedly installed on the adjusting rod; and the rotating side rod is fixedly installed on the fixed ring.

4. The lumbar vertebra cortical bone trajectory screw matching 3D guide plate according to claim 1, characterized in that, The guide plate body is further provided with a positioning protrusion and an anti-skid pattern, the positioning protrusion is fixedly installed on the bottom of the guide plate body; and the anti-skid pattern is arranged on the positioning protrusion.

5. The lumbar vertebra cortical bone trajectory screw matching 3D guide plate according to claim 1, characterized in that, The guide device comprises a guide channel and a guide groove, the guide channel is fixedly installed on the mounting plate and penetrates the mounting plate; and the guide groove is arranged in the guide channel.

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