Novel lumbar spondylolysis repairing device

By designing a new lumbar isthmus fissure repairer, using a new retractable spinal rod and pressurization forceps, the complex problems of uncontrollable and adjustment of the pressure amount in the existing technology are solved, and efficient and controllable pressurization of the fracture end of the lumbar isthmus fissure is achieved, and the healing effect is improved.

CN222815850UActive Publication Date: 2025-05-02920TH HOSPITAL OF THE JOINT LOGISTIC SUPPORT FORCE OF THE CHINESE PEOPLES LIBERATION ARMY
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Patent Information

Application Number
CN202421611617.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-07-09
Publication Date
2025-05-02
Estimated Expiration
2034-07-09

AI Technical Summary

Technical Problem

In the prior art, when treating lumbar vertebrae isthmus fissure, the pressure amount at the isthmus fissure end is uncontrollable, and the pressure degree is difficult to adjust, affecting the tight closure of the isthmus fissure end of the patient.

Method used

A new lumbar isthmus fissure repairer is designed, including a new retractable spinal rod and pressurized forceps. The new spinal rod controls the pressure adjustment between the lamina hook and the pedicle screw through the relative sliding and expansion of the sleeve and the slide rod; the pressurized forceps adjust the elongation, decompression and contraction boosting of the sleeve and the slide rod through the articulation structure of the plier.

Benefits of technology

The controllability of the pressure applied to the fracture end of the isthmus lumbar vertebra is achieved, simplifies the regulation process of the pressure applied, reduces the surgical time, reduces the infection risk of patients, and improves the tight closure of the fracture end of the isthmus .

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Abstract

The utility model discloses a novel lumbar spondylolysis repairing device which comprises a pedicle screw, a novel spine rod, a vertebral plate hook and a pair of pressurizing forceps. The novel spine rod comprises a sleeve and a sliding rod. One side of the sleeve is provided with a ball groove movably connected with the vertebral plate hook, the other side of the sleeve is provided with a circular groove movably provided with the sliding rod, the inner wall of the circular groove of the sleeve is symmetrically provided with limiting blocks connected with the sliding rod, the wall of the circular groove of the sleeve is provided with a circular hole, the circular hole is internally provided with an elastic element movably connected with the chuck, and the outer wall of the sleeve is provided with a cylinder movably connected with one end of the pressurizing clamp; clamping holes are formed in the sliding rod in an array mode to be movably connected with clamping heads, sliding grooves are symmetrically formed in the two sides of the sliding rod to be connected with limiting blocks, the front portion of the sliding rod is detachably connected with the upper end of a pedicle screw, and a first cylinder is arranged in the sliding groove, located on the same side as the cylinder on the sleeve, of the sliding rod and movably connected with the other end of the pressurizing clamp. The front portion of the cone plate hook is an L-shaped hook body, and a ball is arranged at the rear end of the hook body and clamped into the ball groove to be movably connected with the sleeve.
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Description

Technical Field

[0001] The utility model relates to the technical field of medical auxiliary equipment, in particular to a novel lumbar spondylolysis repairer. Background Art

[0002] Lumbar spondylolysis is a bone defect and discontinuity in the isthmus between the upper and lower articular processes of the vertebral arch on one or both sides of the lumbar spine, also known as spondylolysis or isthmus nonunion; most patients are adolescents, with a higher incidence in males, and can occur in any segment; spondylolysis often occurs at L4 or L5, or at both L4 and L5, with varying widths of cracks, often occurring 2-9mm below the pedicle, with serrated or rounded ends, and bone bridges may form; the defect is often filled with fibrocartilage tissue; as a common lumbar disease, medical staff usually use laminar hooks combined with pedicle screw internal fixation surgery to treat patients with lumbar spondylolysis during treatment;

[0003] At present, in the process of treating lumbar spondylolysis, a pedicle screw is usually placed at one end and a lamina hook is placed at the other end for auxiliary treatment of lumbar spondylolysis. The lamina hook is responsible for hooking the lower edge of the patient's lamina, and the pedicle screw at the other end is inserted into the vertebral body through the pedicle. The existing technology for pressurizing the broken ends of the spondylolysis is generally that the medical staff holds a pressurizing forceps during the operation to pressurize the pedicle screw and the lamina hook to close the broken ends. This pressurization process is completely based on the operator's operating experience. Although this method does not affect the progress of the operation, it still has major defects:

[0004] 1. At present, the application of pressure to the isthmus fissure ends is completely dependent on the experience of medical staff, and the use of pressure forceps requires high hand strength of the surgeon, and the pressure application is uncontrollable. If there is a misjudgment, the isthmus fissure ends may not close tightly, thus affecting their healing;

[0005] 2. The prior art is to insert pedicle screws, lamina hooks and spinal rods, then tighten the nuts on the pedicle screws and lamina hooks after applying pressure with a pressure clamp. If the pressure on the isthmus fracture end needs to be adjusted, the nuts on the pedicle screws and lamina hooks need to be loosened. This operation method is too complicated, which prolongs the patient's operation time and increases the patient's infection risk.

[0006] Therefore, the utility model provides a novel lumbar spondylolysis repair device, which can quickly and controllably adjust the pressurization pressure. Utility Model Content

[0007] In order to solve the problems in the prior art that the pressure applied to the isthmic spondylolysis ends of the lumbar vertebra isthmic fracture is uncontrollable, the pressure intensity is difficult to adjust, the adjustment process takes a long time and affects the tight closure of the isthmic spondylolysis ends of the patient, the utility model designs a new type of lumbar isthmic spondylolysis repairer.

[0008] The utility model is realized by the following technical scheme: a novel lumbar spondylolysis repairer, comprising: a pedicle screw, a novel spinal rod, a lamina hook, and a pressure clamp;

[0009] The novel spinal rod comprises a sleeve and a slide rod; a ball groove is provided on one side of the sleeve to movably connect with a vertebral plate hook, and a circular groove is provided on the other side to movably install the slide rod; a limit block is symmetrically arranged on the inner wall of the circular groove of the sleeve to connect with the slide rod; a circular hole is provided on the wall of the circular groove of the sleeve, an elastic element is movably connected with a clamp in the circular hole, and a cylinder is movably connected with one end of a pressure clamp on the outer wall of the sleeve; a clamp hole is movably connected with a clamp in an array on the slide rod, and slide grooves are symmetrically provided on both sides of the slide rod to connect with limit blocks; the front part of the slide rod can be detachably connected with the upper end of the pedicle screw, and a cylinder is movably connected with the other end of the pressure clamp in the slide groove on the same side as the cylinder on the slide rod and the sleeve;

[0010] The front part of the lamina hook is an L-shaped hook body, and the rear end of the hook body is provided with a round ball which is inserted into a movable connection sleeve in a ball groove;

[0011] The pressure pliers include a pliers rod 1, a pliers rod 2, a pliers rod 3, and a clamping shaft. The pliers rod 1 and the pliers rod 2 are both square rods, and the front ends of the square rods are provided with clamp sleeves, and the rear ends are provided with grip rings. The clamp sleeve at the front end of the pliers rod 1 is movably connected to the cylinder on the sleeve, and the clamp sleeve at the front end of the pliers rod 2 is movably connected to the cylinder 1 on the slide rod; the pliers rod 1 and the pliers rod 2 are hinged to each other, and a clamping shaft is provided at the hinge; a universal ball is provided at the upper end of the clamping shaft and movably connected to the pliers rod 3; the pliers rod 3 includes a square rod, a universal ball groove is provided on the square rod to connect to the clamping shaft, a slide groove is provided at the front end of the square rod to connect to the telescopic rod, a crescent-shaped annular plate is provided at the front end of the telescopic rod, and movably connected to the clamp head;

[0012] Furthermore, the novel spinal rod comprises a sleeve and a slide rod; the sleeve is a cylindrical rod, a ball groove is provided at one end of the sleeve to connect the lamina hook, a square groove is provided at the lower end of the ball groove for the lamina hook to rotate and hook the lower edge of the lamina, circular holes are symmetrically provided on both sides of the square groove, elastic elements are arranged in the circular holes to connect the lock head, a circular groove is provided at the other end of the sleeve to movably connect the slide rod, limit blocks are symmetrically provided on the inner wall of the circular groove to limit the rotation of the slide rod corresponding to the slide groove on the slide rod, a circular hole is provided on the wall of the circular groove, an elastic element is arranged in the circular hole to movably connect the clamp head, and a cylindrical movably connected clamp sleeve at the front end of the second limit clamp rod is provided on the outer wall of the sleeve;

[0013] Furthermore, a plurality of card holes are arranged in an array on the slide bar to connect the card heads, a slide groove is symmetrically provided on the slide bar wall in a direction perpendicular to the card holes to flexibly connect the limit blocks, a cylinder is arranged in the slide groove on the same side as the cylinder on the sleeve to flexibly connect the clamp rod with the front end of the clamp rod, and the front end of the slide bar can be detachably connected to the pedicle screw;

[0014] Furthermore, the pressure pliers include a pliers rod 1, a pliers rod 2, a pliers rod 3, and a clamping shaft. The pliers rod 1 and the pliers rod 2 are both square rods, and the front ends of the square rods are provided with clamping sleeves, and the rear ends are provided with gripping rings. The clamping sleeve at the front end of the pliers rod 1 is movably connected to the cylinder on the sleeve, and the clamping sleeve at the front end of the pliers rod 2 is movably connected to the cylinder 1 on the slide rod; the pliers rod 1 and the pliers rod 2 are hinged to each other, and a clamping shaft is provided at the hinge; a universal ball is provided at the upper end of the clamping shaft to be movably connected to the pliers rod 3; by clamping the clamping sleeves at the front ends of the pliers rod 1 and the pliers rod 2 on the cylinder and the cylinder 1 respectively, the gripping rings at the rear ends of the pliers rod 1 and the pliers rod 2 are controlled to move closer or farther from each other, and the elongation of the sleeve and the slide rod is controlled to reduce pressure and the contraction to increase pressure;

[0015] Furthermore, the clamp rod three includes a square rod, a universal ball groove is provided on the square rod to connect the clamp shaft, a sliding groove is provided at the front end of the square rod to connect the telescopic rod, a crescent-shaped annular plate is provided at the front end of the telescopic rod, and a movably connected clamp head is provided. By rotating the clamp rod three, the crescent-shaped annular plate at the front end of the clamp rod three is clamped with the clamp head, and the rear end of the clamp rod three is pressed down. The lever principle drives the clamp head to move upward, thereby releasing the clamp head from locking the new spinal rod.

[0016] The beneficial effects of the utility model are:

[0017] The utility model provides a retractable novel spinal rod, which comprises a sleeve and a slide rod, wherein the sleeve and the slide rod are movably connected through a clamp on the sleeve, a ball groove is provided at one end of the sleeve away from the slide rod for movably connecting with a vertebral plate hook; the end of the slide rod away from the sleeve is detachably connected with a pedicle screw; the vertebral plate lower edge of the lumbar vertebra is hooked by the vertebral plate hook, and the pedicle screw is implanted in the vertebral body; the pressure of the isthmus fracture end can be adjusted through the relative sliding and retracting of the slide rod and the sleeve of the novel spinal rod, thereby solving the problem in the prior art that when performing pressure adjustment, the operation is troublesome, and the experience requirement for medical staff is high. If the judgment is wrong, the isthmus fracture end will not be closed tightly, thereby affecting the healing of the fracture end;

[0018] A pressurizing clamp is provided, which consists of a clamp rod 1 and a clamp rod 2 which are hinged to each other. A clamp sleeve movably connecting sleeve and a sliding rod are respectively provided at the front ends of the clamp rod 1 and the clamp rod 2, and a clamp shaft movably connecting clamp rod 3 is provided at the hinge of the clamp rod 1 and the clamp rod 2. The crescent-shaped annular plate at the front end of the clamp rod 3 is clamped on the clamp head, and the rear end of the clamp rod 3 is pressed. Under the action of the lever principle, the clamp head is driven by the clamp rod 3 to move upward, and the sleeve and the sliding rod are unlocked. The sleeve and the sliding rod are driven to move closer to or away from each other by pressing the clamp rod 1 and the clamp rod 2. The pressure provided by the new spinal rod to the lamina hook is adjusted by the pressurizing clamp, so as to solve the problems of the prior art that the pressure on the isthmic fracture end of the lumbar vertebra is uncontrollable, the pressure intensity adjustment is troublesome, the adjustment process takes a long time and affects the tight closure of the isthmic fracture end of the patient. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for describing the embodiments are briefly introduced below.

[0020] Figure 1 It is a schematic diagram of the overall structure of a new type of lumbar spondylolysis repair device;

[0021] Figure 2 It is a schematic diagram of the structure of a new type of spinal rod, pedicle screw and lamina hook connection of a new type of lumbar spondylolysis repair device;

[0022] Figure 3 It is a new type of lumbar spondylolysis repair device with a fixing mechanism Figure 2 A schematic cross-sectional structure diagram of ;

[0023] Figure 4 It is a schematic diagram of the structure of a sleeve of a new type of lumbar spondylolysis repair device;

[0024] Figure 5 It is a schematic diagram of the structure of a new type of compression clamp for lumbar spondylolysis repair;

[0025] Figure 6 It is a structural schematic diagram of the lamina hook of a new type of lumbar spondylolysis repair device;

[0026] Figure 7 The present invention is a structural schematic diagram of a sliding rod of a novel lumbar spondylolysis repair device.

[0027] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0028] 1-pedicle screw, 2-new spinal rod, 201-slide rod, 2011-round hole, 2012-slide groove, 2013-cylinder 1, 202-sleeve, 2021-elastic element, 20221-clamp, 2023-ball groove, 20231-locking head, 2024-cylinder, 3-vertebral plate hook, 4-pressure clamp, 401-clamp rod 1, 402-clamp rod 2, 4021-square rod, 4022-telescopic rod. DETAILED DESCRIPTION

[0029] In order to solve the problems of the prior art new lumbar spondylolysis repairer, the utility model discloses a new lumbar spondylolysis repairer, comprising: a pedicle screw 1, a new spinal rod 2, a lamina hook 3, and a pressure clamp 4;

[0030] The novel spinal rod 2 comprises a sleeve 202 and a slide bar 201; a ball groove 2023 is provided on one side of the sleeve 202 to be movably connected to the lamina hook 3, round holes are symmetrically provided on both sides of the square groove, elastic elements are arranged in the round holes to connect the locks 20231, a round groove is provided on the other side to movably install the slide bar 201, and a limit block is symmetrically provided on the inner wall of the round groove of the sleeve 202 to connect the slide bar 201, a round hole 2011 is provided on the wall of the round groove of the sleeve 202, and an elastic element 221 is arranged in the round hole 211 to movably connect the locks The head 2022, the outer wall of the sleeve 202 is provided with a cylinder 2024 that is movably connected to one end of the pressure clamp 4; the slide bar 201 is provided with a card hole array to movably connect the card head 2022, the two sides of the slide bar 201 are symmetrically provided with slide grooves 2012 to connect the limit blocks, the front part of the slide bar 201 is detachably connected to the upper end of the pedicle screw 1, the slide bar 201 and the cylinder 2024 on the sleeve 202 are located inside the slide groove 2012 on the same side, and the slide groove 2012 is provided with a cylinder 2013 that is movably connected to the other end of the pressure clamp 4;

[0031] The front part of the lamina hook 3 is an L-shaped hook body, and a round ball is arranged at the rear end of the hook body to be inserted into the ball groove 2023 and movably connected to the sleeve 202;

[0032] The pressurized pliers 4 include a pliers rod 1 401, a pliers rod 2 402, a pliers rod 3, and a clamping shaft. The pliers rod 1 401 and the pliers rod 2 402 are both square rods 4021, and the front ends of the square rods 4021 are provided with clamping sleeves, and the rear ends are provided with gripping rings. The clamping sleeve at the front end of the pliers rod 1 401 is movably connected to the cylinder 2024 on the sleeve 202, and the clamping sleeve at the front end of the pliers rod 2 402 is movably connected to the cylinder 1 2013 on the slide bar 201; the pliers rod 1 401 and the pliers rod 2 402 are hinged to each other, and a clamping shaft is provided at the hinge; a universal ball is provided at the upper end of the clamping shaft and movably connected to the pliers rod 3; the pliers rod 3 includes a square rod 4021, a universal ball groove 2023 is provided on the square rod 4021 to connect the clamping shaft, a sliding groove 2012 is provided at the front end of the square rod 4021 to connect the telescopic rod 4022, a crescent-shaped annular plate is provided at the front end of the telescopic rod 4022, and movably connected to the clamp head 2022;

[0033] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0034] Example 1

[0035] refer to Figure 3The utility model is shown as a schematic cross-sectional structure diagram of the connection between the novel spinal rod 2 and the pedicle screw 1 and the lamina hook 3. In this embodiment, a novel spinal rod 2 is provided; the novel spinal rod 2 includes a sleeve 202 and a slide bar 201; a ball groove 2023 is provided on one side of the sleeve 202 to movably connect the lamina hook 3, circular holes are symmetrically provided on both sides of the square groove, and elastic elements are provided in the circular holes to connect the lock head 2023, and a circular groove is provided on the other side to movably install the slide bar 201, and the inner wall of the circular groove of the sleeve 202 is symmetrically provided with a limit block connected to the slide bar 201, and the circular groove wall of the sleeve 202 is provided with a ball groove 2023 to movably connect the lamina hook 3. A circular hole 2011 is provided, and an elastic element 2021 is provided in the circular hole 2011 to be movably connected to a clamp 2022, and a cylinder 2024 is provided on the outer wall of the sleeve 202 to be movably connected to one end of the pressurizing clamp 4; the slide bar 201 is provided with a clamp hole array to be movably connected to the clamp 2022, and the slide bars 201 are symmetrically provided with slide grooves 2012 to connect the limit blocks on both sides of the slide bar 201, and the front part of the slide bar 201 is detachably connected to the upper end of the pedicle screw 1, and a cylinder 2013 is provided inside the slide groove 2012 on the same side of the slide bar 201 and the cylinder 2024 on the sleeve 202 to be movably connected to the other end of the pressurizing clamp 4;

[0036] The front part of the lamina hook is an L-shaped hook body, and a round ball is arranged at the rear end of the hook body to be inserted into the ball groove 2023 and movably connected to the sleeve 202;

[0037] In this embodiment, the novel spinal rod 2 comprises a sleeve 202 and a slide bar 201; the sleeve 202 is a cylindrical rod, a ball groove 2023 is provided at one end of the sleeve 202 to connect the lamina hook 3, a square groove is provided at the lower end of the ball groove 2023 for the lamina hook 3 to rotate and hook the lower edge of the lamina, and the lamina hook 3 is limited by the locking head 20231 by being inserted into the square groove, a circular groove is provided at the other end of the sleeve 202 to movably connect the slide bar 201, and a limit block is symmetrically provided on the inner wall of the circular groove to correspond to the slide groove 2012 on the slide bar 201 to limit the rotation of the slide bar 201, a circular hole 2011 is provided on the wall of the circular groove, an elastic element 2021 is provided in the circular hole 2011 to movably connect the clamping head 2022, and a cylinder 2024 is provided on the outer wall of the sleeve 202 to movably connect the clamping sleeve at the front end of the limit lead 2;

[0038] In this embodiment, a plurality of card holes are arranged in an array on the slide bar 201 to connect the card heads 2022, and a slide groove 2012 is symmetrically provided on the wall of the slide bar 201 in a direction perpendicular to the card holes to movably connect the limit block, and a cylinder 1 2013 is arranged in the slide groove 2012 on the same side as the cylinder 2024 on the sleeve 202 to movably connect the card sleeve of the front end of the clamp rod 2 402, and the front end of the slide bar 201 can be detachably connected to the pedicle screw 1;

[0039] In this embodiment, the pressure between the lamina hook 3 and the pedicle screw 1 is controlled by relative sliding and extension of the slide bar 201 and the sleeve 202 of the novel spinal rod 2, thereby controlling the degree of closure of the isthmus fracture end. This solves the problems of the prior art in that the amount of pressure applied to the isthmus fracture end of the lumbar vertebra is uncontrollable, the pressure intensity is difficult to adjust, the adjustment process takes a long time, and affects the tight closure of the isthmus fracture end of the patient.

[0040] Example 2

[0041] like Figure 5 The figure is a schematic diagram of the structure of the pressure clamp 4 of the utility model. In the utility model, the pressure clamp 4 is set, and the pressure clamp 4 includes: a clamp rod 401, a clamp rod 402, a clamp rod 3, and a clamp shaft. The clamp rod 401 and the clamp rod 402 are both square rods 4021, and the front ends of the square rods 4021 are both provided with a clamp sleeve, and the rear ends are both provided with a grip ring. The clamp sleeve at the front end of the clamp rod 401 is movably connected to the cylinder 2024 on the sleeve 202, and the clamp sleeve at the front end of the clamp rod 402 is movable. The cylinder 1 2013 on the connecting slide bar 201; the clamp rod 1 401 and the clamp rod 2 402 are hinged to each other, and a clamp shaft is set at the hinge; a universal ball is set on the upper end of the clamp shaft to movably connect the clamp rod 3; the clamp rod 3 includes a square rod 4021, a universal ball groove 2023 is set on the square rod 4021 to connect the clamp shaft, a sliding groove 2012 is set at the front end of the square rod 4021 to connect the telescopic rod 4022, and a crescent-shaped annular plate is set at the front end of the telescopic rod 4022, which is movably connected to the clamp head 2022;

[0042] In this embodiment, the pressurizing pliers 4 include a pliers rod 1 401, a pliers rod 2 402, a pliers rod 3, and a clamping shaft. The pliers rod 1 401 and the pliers rod 2 402 are both square rods 4021, and the front ends of the square rods 4021 are both provided with clamping sleeves, and the rear ends are both provided with gripping rings. The clamping sleeve at the front end of the pliers rod 1 401 is movably connected to the cylinder 2024 on the sleeve 202, and the clamping sleeve at the front end of the pliers rod 2 402 is movably connected to the cylinder 1 2013 on the slide bar 201; the pliers rod 1 401 and the pliers rod 2 402 are hinged to each other, and a clamping shaft is provided at the hinge; a universal ball is provided at the upper end of the clamping shaft to be movably connected to the pliers rod 3; by clamping the clamping sleeves at the front ends of the pliers rod 1 401 and the pliers rod 2 402 on the cylinder 2024 and the cylinder 1 2013 respectively, the gripping rings at the rear ends of the pliers rod 1 401 and the pliers rod 2 402 are controlled to move closer or farther from each other, and the elongation of the sleeve 202 and the slide bar 201 is controlled to reduce pressure and contract and increase pressure;

[0043] In this embodiment, the clamp rod three includes a square rod 4021, a universal ball groove 2023 is provided on the square rod 4021 to connect the clamp shaft, a slide groove 2012 is provided at the front end of the square rod 4021 to connect the telescopic rod 4022, a crescent-shaped annular plate is provided at the front end of the telescopic rod 4022, and a movably connected clamp head 2022 is provided. By rotating the clamp rod three, the crescent-shaped annular plate at the front end of the clamp rod three is clamped with the clamp head 2022, and the rear end of the clamp rod three is pressed down. The lever principle drives the clamp head 2022 to move upward, thereby releasing the clamp head 2022 from locking the new spinal rod 2.

[0044] In this embodiment, by pressing the clamp rod 1 401 and the clamp rod 2 402 to drive the sleeve 202 and the sliding rod 201 to move closer to or away from each other, the pressure provided by the new spinal rod 2 to the lamina hook 3 is adjusted by the pressure clamp 4, thereby solving the problems of the prior art of uncontrollable pressure on the isthmic fracture end of the lumbar spine, difficult pressure intensity adjustment, long adjustment time and affecting the tight closure of the isthmic fracture end of the patient.

[0045] In summary, the novel lumbar spondylolysis repairer disclosed in the utility model comprises: a novel spinal rod 2, the novel spinal rod 2 comprises a sleeve 202 and a slide bar 201, the sleeve 202 and the slide bar 201 are movably connected through a clamp 2022 on the sleeve 202, a ball groove 2023 is provided at one end of the sleeve 202 away from the slide bar 201 to be movably connected to a vertebral plate hook 3; one end of the slide bar 201 away from the sleeve 202 is detachably connected to a pedicle screw 1; the vertebral plate hook 3 is hooked to the lower edge of the human vertebral plate, the pedicle screw 1 is implanted in the vertebral body, and the slide bar 201 and the sleeve 202 of the novel spinal rod 2 are relatively slidable and retracted to control the vertebral plate hook 3 to adjust the pressure on the lower edge of the vertebral plate, thereby solving the problems of the prior art that the pressure on the lumbar spondylolysis fracture end is uncontrollable, the pressure adjustment is troublesome, the adjustment process takes a long time, and the fracture end of the spondylolysis of the patient is affected.

[0046] A pressure clamp 4 is provided, and the pressure clamp 4 is composed of a clamp rod 1 401 and a clamp rod 2 402 which are hinged to each other. A clamp sleeve 202 and a slide rod 201 are respectively provided at the front ends of the clamp rod 1 401 and the clamp rod 2 402, and a clamp shaft is provided at the hinge of the clamp rod 1 401 and the clamp rod 2 402 to movably connect the clamp rod 3. The crescent-shaped annular plate at the front end of the clamp rod 3 is clamped on the clamp head 2022, and the rear end of the clamp rod 3 is pressed. Under the action of the lever principle, the clamp rod 3 drives the clamp head 2022 to move upward. The sleeve 202 and the slide bar 201 are unlocked by moving, and the sleeve 202 and the slide bar 201 are driven to move closer to or farther away from each other by pressing the clamp rod 1 401 and the clamp rod 2 402. The pressure between the lamina hook 3 and the pedicle screw 1 is adjusted by the pressure clamp 4 to control the degree of closure of the isthmus fracture end, thereby solving the problems of the prior art that the pressure amount of the lumbar isthmus fracture end is uncontrollable, the pressure amount adjustment is troublesome, the adjustment process takes a long time and affects the tight closure of the patient's isthmus fracture end.

[0047] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the present invention to the specific implementation methods described.

Claims

1. A novel lumbar spondylolysis repair device, characterized in that: include: Pedicle screws, new spinal rods, lamina hooks, and compression forceps; The novel spinal rod comprises a sleeve and a slide rod; a ball groove is provided on one side of the sleeve to movably connect with a vertebral plate hook, and a circular groove is provided on the other side to movably install the slide rod; a limit block is symmetrically arranged on the inner wall of the circular groove of the sleeve to connect with the slide rod; a circular hole is provided on the wall of the circular groove of the sleeve, an elastic element is movably connected with a clamp in the circular hole, and a cylinder is movably connected with one end of a pressure clamp on the outer wall of the sleeve; a clamp hole is movably connected with a clamp in an array on the slide rod, and slide grooves are symmetrically provided on both sides of the slide rod to connect with limit blocks; the front part of the slide rod can be detachably connected with the upper end of the pedicle screw, and a cylinder is movably connected with the other end of the pressure clamp in the slide groove on the same side as the cylinder on the slide rod and the sleeve; The front part of the lamina hook is an L-shaped hook body, and the rear end of the hook body is provided with a round ball which is inserted into a movable connection sleeve in a ball groove; The pressure pliers include a pliers rod 1, a pliers rod 2, a pliers rod 3, and a clamping shaft. The pliers rod 1 and the pliers rod 2 are both square rods, and a clamping sleeve is provided at the front end of the square rod, and a gripping ring is provided at the rear end. The clamping sleeve at the front end of the pliers rod 1 is movably connected to the cylinder on the sleeve, and the clamping sleeve at the front end of the pliers rod 2 is movably connected to the cylinder 1 on the slide rod; the pliers rod 1 and the pliers rod 2 are hinged to each other, and a clamping shaft is provided at the hinge; a universal ball is provided at the upper end of the clamping shaft and is movably connected to the pliers rod 3; the pliers rod 3 includes a square rod, a universal ball groove is provided on the square rod to connect the clamping shaft, a slide groove is provided at the front end of the square rod to connect the telescopic rod, a crescent-shaped annular plate is provided at the front end of the telescopic rod, and it is movably connected to the clamp head.

2. According to claim 1, a novel lumbar spondylolysis repair device is characterized in that: The novel spinal rod comprises a sleeve and a slide rod; the sleeve is a cylindrical rod, a ball groove is provided at one end of the sleeve to connect with the lamina hook, a square groove is provided at the lower end of the ball groove for the lamina hook to rotate and hook the lamina joint, circular holes are symmetrically provided on both sides of the square groove, elastic elements are arranged in the circular holes to connect with the lock head, a circular groove is provided at the other end of the sleeve to movably connect with the slide rod, limit blocks are symmetrically provided on the inner wall of the circular groove to limit the rotation of the slide rod corresponding to the slide groove on the slide rod, a circular hole is provided on the wall of the circular groove, an elastic element is arranged in the circular hole to movably connect with the clamp head, and a cylindrical clamping sleeve which movably connects the front end of the second limit clamp rod is provided on the outer wall of the sleeve.

3. The novel lumbar spondylolysis repair device according to claim 1, characterized in that: The slide rod is arrayed with a plurality of card holes for connecting card heads, a slide groove movably connected to a limit block is symmetrically opened on the slide rod wall in a direction perpendicular to the card holes, a cylinder is movably connected to the front end of the clamp rod in the slide groove on the same side as the cylinder on the sleeve, and a sleeve is arranged, and the front end of the slide rod can be detachably connected to the pedicle screw.

4. The novel lumbar spondylolysis repair device according to claim 1, characterized in that: The pressurizing pliers include a pliers rod 1, a pliers rod 2, a pliers rod 3, and a clamping shaft. The pliers rod 1 and the pliers rod 2 are both square rods, and a clamping sleeve is provided at the front end of the square rods, and a gripping ring is provided at the rear end. The clamping sleeve at the front end of the pliers rod 1 is movably connected to the cylinder on the sleeve, and the clamping sleeve at the front end of the pliers rod 2 is movably connected to the cylinder 1 on the slide rod; the pliers rod 1 and the pliers rod 2 are hinged to each other, and a clamping shaft is provided at the hinge; a universal ball is provided at the upper end of the clamping shaft and is movably connected to the pliers rod 3; by clamping the clamping sleeves at the front ends of the pliers rod 1 and the pliers rod 2 on the cylinder and the cylinder 1 respectively, the gripping rings at the rear ends of the pliers rod 1 and the pliers rod 2 are controlled to approach or move away from each other, and the elongation of the sleeve and the slide rod is controlled to reduce pressure and the contraction to increase pressure.

5. The novel lumbar spondylolysis repair device according to claim 1, characterized in that: The clamp rod three comprises a square rod, a universal ball groove is arranged on the square rod to connect the clamp shaft, a sliding groove is arranged at the front end of the square rod to connect the telescopic rod, a crescent-shaped annular plate is arranged at the front end of the telescopic rod, and a movably connected clamp head is connected. By rotating the clamp rod three, the crescent-shaped annular plate at the front end of the clamp rod three is clamped with the clamp head, and the rear end of the clamp rod three is pressed down. The lever principle drives the clamp head to move upward, thereby releasing the clamp head from locking the new spinal rod.