Implantation device for facet joint

Abstract

The utility model discloses an implanting device for a facet joint. The implanting device comprises a guide mechanism and a magnetic fixing mechanism, the guide mechanism comprises a metal guide plate; a positioning through groove is formed in the metal guide plate, and a first auxiliary fixing groove and a second auxiliary fixing groove are formed in the two sides of the positioning through groove; a first movable plate and a second movable plate are further included, the first movable plate is provided with main part holes in the positions corresponding to the positioning through grooves, and the first movable plate is provided with threaded fixing holes in the positions corresponding to the first auxiliary fixing grooves and the second auxiliary fixing grooves; the magnetic fixing mechanism comprises a metal gasket, a mounting hole formed in the metal gasket and a magnetic main part connected with the metal gasket, the magnetic main part comprises a fixing column connected with the metal gasket and a magnetic core containing hole formed in the fixing column, and a magnetic lock cylinder is arranged in the magnetic core containing hole. The device is simple in structure, can relieve or cure pain symptoms, does not need to sacrifice the motion range of joints, does not need complex joint prostheses, and is easy to operate.

Description

Technical Field

[0001] This utility model relates to the field of orthopedic technology, specifically to an implantation device for small joints. Background Technology

[0002] Arthritis of the hand can be clinically classified into many types, including rheumatoid arthritis, traumatic arthritis, and osteoarthritis. Treatment varies depending on the specific condition. Once hand arthritis develops, patients will experience localized pain, which worsens significantly after exertion, exposure to cold, or joint movement. Slight swelling may also occur, and in severe cases, it can impair joint mobility, significantly impacting a person's work and daily life.

[0003] Currently, the main treatments for arthritis are joint fusion or joint replacement. Joint fusion sacrifices joint mobility for pain relief in the hand, severely impacting hand function. Research on prostheses for small hand joints is not yet mature or widely applicable. Since hand joints are non-weight-bearing, the primary concern for patients with arthritis is pain, mainly caused by friction between the joint surfaces. Therefore, designing an implantable device that reduces joint surface friction is crucial for solving the problem of arthritis. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide an implantation device for small joints that can reduce or cure pain symptoms without sacrificing the range of motion of the joint, without requiring a complex joint prosthesis, and is simple to operate, in order to address the shortcomings of the existing technology.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0006] An implantation device for small joints includes a guiding mechanism and a magnetic fixation mechanism; the guiding mechanism includes a metal guide plate; the metal guide plate is provided with a positioning through groove, and a first auxiliary fixation groove and a second auxiliary fixation groove are symmetrically provided on both sides of the positioning through groove; it also includes a first movable plate and a second movable plate, the first movable plate and the second movable plate have the same structure, the first movable plate and the second movable plate are each provided with a main component hole at the corresponding position of the positioning through groove, and the first movable plate and the second movable plate are each provided with a threaded fixation hole at the corresponding position of the first auxiliary fixation groove and the second auxiliary fixation groove;

[0007] The magnetic fixing mechanism includes a metal gasket, a mounting hole on the metal gasket, and a magnetic main component connected to the metal gasket. The magnetic main component includes a fixing post connected to the metal gasket and a magnetic core placement hole on the fixing post. A magnetic lock core with an inner diameter adapted to the magnetic core placement hole is provided in the magnetic core placement hole. The diameter of the fixing post is adapted to the inner diameter of the hole in the main component.

[0008] As the preferred technical scheme of the above, the width of the first auxiliary fixing groove and the second auxiliary fixing groove is the same, and the diameter of the threaded fixing hole is not greater than the width of the first auxiliary fixing groove.

[0009] As the preferred technical scheme of the above, the diameter of the main piece hole is not greater than the width of the positioning through groove.

[0010] As the preferred technical scheme of the above, the side wall of the positioning through groove is provided with a sliding groove, and the bottom of the first movable plate and the second movable plate is provided with a sliding plate matched with the sliding groove.

[0011] As the preferred technical scheme of the above, the magnetic core placing hole is further provided with a clamping groove, and the magnetic lock core is provided with a clamping block matched with the clamping groove.

[0012] As the improvement of the above technical scheme, the metal gasket is further provided with a plurality of fixed supporting plates, and the fixed supporting plates are provided with at least one reinforcing hole.

[0013] As the preferred technical scheme of the above, the plurality of fixed supporting plates are non-parallel arranged,

[0014] As the improvement of the above technical scheme, one side of the metal guide plate is marked with a scale, the size length of the scale is the same as the length of the first auxiliary fixing groove; the first movable plate and the second movable plate are both provided with a pointer, and the straight line connecting the tip of the pointer with the center of the main piece hole is parallel to the scale line.

[0015] Due to the adoption of the above technical scheme, the beneficial effects of the present application are:

[0016] The utility model provides a kind of implant device for small joint, including guiding mechanism and magnetic fixing mechanism;Guiding mechanism includes metal guide plate;Metal guide plate is provided with positioning through slot, and the both sides of positioning through slot are symmetrically provided with first auxiliary fixing groove and second auxiliary fixing groove;Further including first movable plate and second movable plate, first movable plate and second movable plate are same in structure, and first movable plate is provided with main part hole at the corresponding place of positioning through slot, and first movable plate is provided with threaded fixing hole at the corresponding place of first auxiliary fixing groove and second auxiliary fixing groove;Magnetic fixing mechanism includes metal gasket, mounting hole being provided on metal gasket and magnetic main part being connected with metal gasket, and magnetic main part includes fixed column being connected with metal gasket and magnetic core placing hole being provided on fixed column, magnetic core placing hole is provided with magnetic lock core being adapted to the inner diameter of magnetic core placing hole, and the diameter of fixed column is adapted to the inner diameter of main part hole.The position of magnetic lock core needed to be installed is determined according to the joint surface defect condition of patient, then the distance of the corresponding two main part holes is controlled by the sliding of guiding mechanism first movable plate and second movable plate, and then first movable plate and second movable plate are fixed using fixed screw;When using, guiding mechanism is placed at the injured part of patient, and micro electric drill is used to punch through main part hole on guiding mechanism;Finally, magnetic main part is placed in the punched hole and fixed.The above-mentioned setting can reduce or cure pain symptoms, without sacrificing the activity of joint, without complex joint prosthesis, and simple operation.

[0017] The magnetic core placing hole of the device is further provided with a clamping groove, and the magnetic lock core is provided with a clamping block adapted to the clamping groove.

[0018] The metal gasket of the device is further provided with a plurality of fixed branch plates, and the fixed branch plates are provided with at least one reinforcing hole.

[0019] One side of the metal guide plate of the device is marked with a scale, and the size length of the scale is the same as the length of the first auxiliary fixing groove. BRIEF DESCRIPTION OF DRAWINGS

[0020] The utility model is further described below in combination with drawings and examples.

[0021] Fig. 1 It is the structure schematic view of guiding mechanism.

[0022] Fig. 2 It is the structure schematic view of magnetic fixing mechanism.

[0023] Fig. 3 This is a schematic diagram of the magnetic lock core.

[0024] Fig. 4 This is an installation diagram of the magnetic fixing mechanism;

[0025] In the diagram, 1. Metal guide plate; 2. Positioning through groove; 3. First auxiliary fixing groove; 4. Second auxiliary fixing groove; 5. First movable plate; 6. Second movable plate; 7. Main component hole; 8. Threaded fixing hole; 9. Metal gasket; 10. Mounting hole; 11. Fixing post; 12. Magnetic core placement hole; 13. Magnetic lock core; 14. Slide groove; 15. Slide plate; 16. Slot; 17. Locking block; 18. Fixing support plate; 19. Reinforcing hole; 20. Scale; 21. Pointer; 22. Joint surface; 23. Joint capsule; 24. Joint cavity. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0027] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0028] It should also be noted that when a component is described as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intervening component present. When a component is described as "connected to" another component, it can be directly connected to the other component or there may be an intervening component present.

[0029] Example

[0030] like Figs. 1 to 4 As shown, an implantation device for small joints includes a guiding mechanism and a magnetic fixation mechanism. The guiding mechanism includes a metal guide plate 1. The metal guide plate 1 is provided with a positioning groove 2, and a first auxiliary fixation groove 3 and a second auxiliary fixation groove 4 are symmetrically arranged on both sides of the positioning groove 2. The first auxiliary fixation groove 3 and the second auxiliary fixation groove 4 have the same width. The device also includes a first movable plate 5 and a second movable plate 6. The first movable plate 5 and the second movable plate 6 have the same structure. The first movable plate 5 is provided with a main component hole 7 at the corresponding position of the positioning groove 2. The first movable plate 5 is provided with threaded fixing holes 8 at the corresponding positions of the first auxiliary fixation groove 3 and the second auxiliary fixation groove 4. The diameter of the threaded fixing hole 8 is not greater than the width of the first auxiliary fixation groove 3. The diameter of the main component hole 7 is not greater than the width of the positioning groove 2.

[0031] The magnetic fixing mechanism comprises a metal pad 9, a mounting hole 10 arranged on the metal pad 9, and a magnetic main part connected with the metal pad 9, wherein the magnetic main part comprises a fixing column 11 connected with the metal pad 9 and a magnetic core placing hole 12 arranged on the fixing column 11, and a magnetic lock core 13 with an inner diameter matching that of the magnetic core placing hole 12 is arranged in the magnetic core placing hole 12, and the diameter of the fixing column 11 matches the inner diameter of the main part hole 7.

[0032] Under the guidance of the guiding mechanism, the micro electric drill is used to drill two holes perpendicular to the bone surface at the spongiosa under the injured articular surface, then the magnetic lock cores 13 with corresponding magnetic force are placed in the magnetic core placing holes 12 according to the articular surface defect shown in the preoperative X-ray film, and the two magnetic main parts are respectively placed in the two drilled holes, the metal pad 9 is locked with the bone surface by the metal locking nail through the mounting hole 10, and is buried in the subcutis, under the action of the two magnetic main parts, the joint cavity 24 composed of the joint capsule 23 and the articular surface 22 is expanded, and the joint friction is reduced.

[0033] Specifically, before drilling, the distance between the two magnetic lock cores 13 to be installed is determined according to the articular surface defect shown in the preoperative X-ray film, the distance between the main part holes 7 on the first movable plate 5 and the second movable plate 6 is adjusted by sliding the first movable plate 5 and the second movable plate 6 on the metal guide plate 1, after the distance is determined, the first movable plate 5 and the second movable plate 6 are fixed by respectively passing the fixing screws through the threaded fixing holes 8, the first auxiliary fixing grooves 3, and passing the fixing screws through the threaded fixing holes 8, the second auxiliary fixing grooves 4. After the first movable plate 5 and the second movable plate 6 are fixed, the guiding assembly is placed on the upper part of the patient's hand, and the micro electric drill is used to drill through the main part holes 7 on the first movable plate 5 and the second movable plate 6.

[0034] Further, the side wall of the positioning groove 2 is provided with a sliding groove 14, and the bottom of the first movable plate 5 and the second movable plate 6 is respectively provided with a sliding plate 15 matching the sliding groove 14.

[0035] Further, the magnetic core placing hole 12 is further provided with a clamping groove 16, and the magnetic lock core 13 is provided with a clamping block 17 matching the clamping groove 16; the above arrangement improves the stability of the magnetic lock core 13.

[0036] Further, the metal pad 9 is further provided with a plurality of fixed branch plates 18, and the fixed branch plate 18 is provided with at least one reinforcing hole 19; further, the plurality of fixed branch plates 18 are non-parallel arranged. The arrangement of the plurality of non-parallel fixed branch plates 18 improves the fixing stability of the magnetic main part.

[0037] Further, one side of the metal guide plate 1 is marked with a scale 20, the size length of the scale 20 is same with the length of the first auxiliary fixing groove 3; the first movable plate 5 and the second movable plate 6 are both provided with a pointer 21, the tip of the pointer 21 is connected with a straight line of the center of the main part hole 7, and the straight line is parallel with the scale 20 line. The pointer 21 can be more convenient to determine the distance between the main part holes 7 on the first movable plate 5 and the second movable plate 6, and improve the punching efficiency.

[0038] In addition, it should be understood that, after reading the content of the present application, those skilled in the art can make various changes or modifications to the present application, and these equivalent forms also fall within the scope of the appended claims.

Claims

1. An implant device for a small joint, characterized in that, The utility model relates to a magnetic fixing mechanism and guiding mechanism, and the guiding mechanism comprises a metal guide plate, and a positioning through slot is formed in the metal guide plate, and first and second auxiliary fixing slots are symmetrically arranged on both sides of the positioning through slot, and the first and second auxiliary fixing slots are arranged with first and second movable plates, and the first and second movable plates are identical in structure, and the first and second movable plates are provided with main part holes at positions corresponding to the positioning through slot, and the first and second movable plates are provided with threaded fixing holes at positions corresponding to the first and second auxiliary fixing slots. The magnetic fixing mechanism comprises a metal gasket, a mounting hole arranged on the metal gasket, and a magnetic main part connected with the metal gasket, and the magnetic main part comprises a fixing column connected with the metal gasket and a magnetic core placing hole arranged on the fixing column, and the magnetic core placing hole is provided with a magnetic lock core matched with the inner diameter of the magnetic core placing hole, and the diameter of the fixing column is matched with the inner diameter of the main part hole.

2. An implant device for a small joint according to claim 1, characterized in that The first and second auxiliary fixing slots have the same width, and the diameter of the threaded fixing hole is not greater than the width of the first auxiliary fixing slot.

3. The implant device for a small joint according to claim 1, wherein: The diameter of the main part hole is not greater than the width of the positioning through slot.

4. The implant device for a small joint according to claim 1, wherein: A sliding groove is arranged on the side wall of the positioning through slot, and the bottom of the first and second movable plates is provided with a sliding plate matched with the sliding groove.

5. The implant device for a small joint according to claim 1, wherein: A clamping groove is arranged at the magnetic core placing hole, and the magnetic lock core is provided with a clamping block matched with the clamping groove.

6. The implant device for a small joint according to claim 1, wherein: The metal gasket is further provided with a plurality of fixing support plates, and at least one reinforcing hole is arranged on the fixing support plate.

7. An implant device for a small joint according to claim 6, characterized in that: The plurality of fixing support plates are arranged non-parallelly.

8. The implant device for a small joint according to claim 1, wherein: One side of the metal guide plate is marked with a scale, and the size length of the scale is the same as the length of the first auxiliary fixing slot, and the first and second movable plates are provided with a pointer, and the straight line connecting the tip of the pointer with the center of the main part hole is parallel to the scale line.

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