Knee joint osteotomy locking plate

Abstract

The invention discloses a knee joint osteotomy locking plate which comprises a plate body, the plate body is provided with a head area, a stem area and a wing plate area, the head area, the stem area and the wing plate area are arranged in a triangular structure, a bending long groove is formed between the stem area and the wing plate area, and the wing plate area can be bent, so that the plate body is attached to the bone surface of a patient. The head area, the stem area and the wing plate area form a triangular structure, the fixing effect of the locking plate is enhanced, and the bent long groove is formed between the stem area and the wing plate area, so that medical staff can bend the wing plate area of the plate body according to the bone size of a patient during an operation, and the locking plate is attached to the bone surface of the patient. The head area, the stem area and the wing plate area are integrally fixed, the angulation stability is good, the stabilizing effect is more reliable, the angulation fixing device can adapt to different patients, patients with small bones can be fixed in a better fit mode, and bone healing can be accelerated.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to a knee joint osteotomy locking plate. Background Art

[0002] The knee joint is one of the most important joints for bearing body weight. Its health directly affects the freedom of movement and is therefore related to all activities in daily life. Common symptoms of degenerative arthritis include knee pain and weakness, and stiffness and inflexibility in the popliteal fossa. When the symptoms worsen, pain will appear on the inner side of the knee joint, which will spread upwards to cause back pain, spread downwards to cause calf pain or ankle pain, and make it difficult to squat. The quadriceps muscles gradually atrophy, and the knee joint gradually forms an inward deformation, making it impossible to walk long distances, and the knee will ache when sleeping at night.

[0003] At present, most surgeries for knee joints use high tibial osteotomy, which is to cut off a small piece of bone from the upper inner end of the tibia about five centimeters away from the joint surface to form a filling part, and fill the filling part with a filler, forcing the tibia below the cut to turn outward, so that the mechanical axis returns to the normal position, and then apply a bone plate to fix the osteotomy until the filling part heals, so that the medial and lateral joints can be evenly stressed. The existing knee osteotomy locking plate has a poor fixation effect after surgery, and the bone reduction may not reach anatomical reduction, which is very likely to cause fixation failure, leading to the formation of traumatic arthritis, and then pain, joint stiffness, degeneration, and even disability. The existing knee osteotomy locking plate has a poor fixation effect for osteoporosis patients, and the locking plate is easy to fall off. In addition, the size of the knee osteotomy locking plate in the prior art is mostly designed and produced based on foreign human body parameters, which does not match the human body parameter data of Chinese people, which is also easy to cause the knee joint to be difficult to fully heal after surgery. Summary of the invention

[0004] The purpose of the present invention is to provide a knee joint locking plate to solve the above problems existing in the prior art.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a knee osteotomy locking plate, comprising a plate body, wherein the plate body is provided with a head area, a stem area and a wing plate area, wherein the head area, the stem area and the wing plate area are arranged in a triangular structure, and a long bending groove is provided between the stem area and the wing plate area, and the wing plate area can be bent toward the stem area so that the plate body fits the patient's bone surface.

[0006] As an optional implementation of the above technical solution, the long bent groove includes a first groove body and a second groove body, and the first groove body and the second groove body are arranged on the same straight line with an interval.

[0007] As an optional implementation of the above technical solution, the edges of the wing plate area and the stem area are transitioned through a bevel.

[0008] As an optional implementation of the above technical solution, the head area is provided with a plurality of head locking holes.

[0009] As an optional implementation of the above technical solution, the head area is provided with six head locking holes, three of which are arranged in a row and parallel to the tibial plateau articular surface to fit the tibial plateau articular surface; the other three head locking holes are arranged in a triangle and fixed to the proximal end of the tibia to enhance the anti-rotation ability of the plate.

[0010] As an optional implementation of the above technical solution, the wing panel area is provided with a plurality of wing panel locking holes.

[0011] As an optional implementation of the above technical solution, the wing plate area is provided with four wing plate locking holes, one of which is arranged at one end of the wing plate area and close to the head area to enhance the fixation of the proximal tibia; the other three wing plate locking holes are arranged at the other end of the wing plate area and close to the trunk area.

[0012] As an optional implementation of the above technical solution, the stem area is provided with a combining hole and a stem locking hole, and the stem locking screws in the stem locking hole are cross-fixed with the wing plate locking screws in the wing plate locking hole.

[0013] As an optional implementation of the above technical solution, the stem area is provided with a combining hole and three stem locking holes.

[0014] As an optional implementation of the above technical solution, the head area is provided with two first guide needle holes.

[0015] As an optional implementation of the above technical solution, the dry area is provided with a second needle guide hole, and the second needle guide hole and the two first needle guide holes are arranged in a triangle.

[0016] The beneficial effects of the present invention are:

[0017] 1. The present invention forms a triangular structure through the head area, the stem area and the wing plate area to enhance the fixing effect of the locking plate, and a long bending groove is provided between the stem area and the wing plate area, which is convenient for medical staff to bend the wing plate area of ​​the plate body according to the size of the patient's bones during surgery, so that the locking plate fits the patient's bone surface. In the present invention, the head area, the stem area and the wing plate area form an integral fixation, the angular stability is good, the stabilization effect is more reliable, and it can adapt to different patients. It can be more closely fixed for patients with smaller bones, which is conducive to accelerating bone healing.

[0018] 2. The head area is designed with six head locking holes, three of which are arranged in a row, parallel to the tibial plateau articular surface, effectively fitting the tibial plateau articular surface, and the other three head locking holes are arranged in a triangle to fix the proximal tibia, enhance the anti-rotation ability of the locking plate, and provide stronger support.

[0019] 3. The design of the wing plate area is increased. Four wing plate locking holes are set in the wing plate area, one of which is set at one end of the wing plate area and close to the head area, which is separated from the other three wing plate locking holes to enhance the fixation of the proximal tibia; the other three wing plate locking holes are set at the other end of the wing plate area and close to the stem area. The wing plate locking holes can enhance the locking plate and bear the stress before the osteotomy gap heals during tibial osteotomy surgery; the three wing plate locking holes enhance the fixation of the tibial shaft, and a triangular structure is formed by the stem area of ​​the locking plate, the wing plate area and the bone. The stem locking screw in the stem locking hole is cross-fixed with the wing plate locking screw in the wing plate locking hole to enhance the fixation effect of the locking plate.

[0020] 4. The long bending groove design between the stem area and the wing plate area enables the wing plate area to be bent, so that the locking plate can be fixed more closely for patients with smaller bones. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of an implementation mode of the present invention.

[0022] In the figure: 1-head area; 2-trunk area; 3-wing plate area; 4-first slot body; 5-second slot body; 6-head locking hole; 7-wing plate locking hole; 8-combination hole; 9-trunk locking hole; 10-first guide pin hole; 11-second guide pin hole. DETAILED DESCRIPTION

[0023] like Figure 1 As shown, this embodiment provides a knee osteotomy locking plate, including a plate body, which is fixed to the bone by locking screws, and the plate body is provided with a head area 1, a stem area 2 and a wing plate area 3, the head area 1, the stem area 2 and the wing plate area 3 are arranged in a triangular structure, and the edges of the wing plate area 3 and the stem area 2 are transitioned by an inclined surface. A long bending groove is provided between the stem area 2 and the wing plate area 3, and the wing plate area 3 can be bent toward the stem area 2, so that the plate body fits the patient's bone surface.

[0024] The present invention forms a triangular structure through the head area 1, the stem area 2 and the wing plate area 3 to enhance the fixing effect of the locking plate, and a long bending groove is provided between the stem area 2 and the wing plate area 3, which is convenient for medical staff to bend the wing plate area 3 of the plate body according to the size of the patient's bones during surgery, so that the locking plate fits the patient's bone surface. In the present invention, the head area 1, the stem area 2 and the wing plate area 3 form an integral fixation, the angle stability is good, the stabilization effect is more reliable, and it can adapt to different patients. It can be more closely fixed for patients with smaller bones, which is conducive to accelerating bone healing.

[0025] like Figure 1 As shown, in one embodiment, the bending long groove includes a first groove body 4 and a second groove body 5, and the first groove body 4 and the second groove body 5 are arranged on the same straight line at intervals. On the basis of ensuring the strength of the locking plate, the wing plate area 3 can be conveniently bent.

[0026] like Figure 1 As shown, in this embodiment, the head region 1 is provided with a plurality of head locking holes 6. Specifically, the head region 1 is provided with six head locking holes 6, of which three head locking holes 6 are arranged in a row and are parallel to the tibial plateau articular surface to fit the tibial plateau articular surface; the other three head locking holes 6 are arranged in a triangular shape and are fixed to the proximal end of the tibia to enhance the anti-rotation capability of the plate.

[0027] In this embodiment, the wing plate area 3 is provided with a plurality of wing plate locking holes 7. Specifically, the wing plate area 3 is provided with four wing plate locking holes 7, one of which is arranged at one end of the wing plate area 3 and close to the head area 1 to enhance the fixation of the proximal tibia; the other three wing plate locking holes 7 are arranged at the other end of the wing plate area 3 and close to the trunk area 2.

[0028] In this embodiment, the stem area 2 is provided with a combination hole 8 and a stem locking hole 9, and the stem locking screws in the stem locking hole 9 are cross-fixed with the wing plate locking screws in the wing plate locking hole 7. Specifically, the stem area 2 is provided with a combination hole 8 and three stem locking holes 9. The locking plate as a whole is provided with multiple locking holes, which can also form effective fixation for osteoporosis patients.

[0029] In this embodiment, the head area 1 is provided with two first guide pin holes 10, the stem area 2 is provided with a second guide pin hole 11, and the second guide pin hole 11 and the two first guide pin holes 10 are arranged in a triangle. The first guide pin hole 10 and the second guide pin hole 11 are used for temporary fixation of the locking plate to prevent the locking plate from shifting when the locking screw is implanted.

[0030] The knee osteotomy locking plate of the present invention adopts an anatomical design in structure, which can effectively support and reduce the proximal tibial osteotomy and proximal tibial fracture. The head area 1 is provided with six head locking holes 6 to effectively fix the tibial plateau and the proximal end. The stem area 2 is provided with a combination hole 8 and three stem locking holes 9 for fixing the locking plate on the bone. In addition, three guide pin holes are provided, two first guide pin holes 10 are provided in the head area 1, and one second guide pin hole 11 is provided in the stem area 2. The three guide pin holes are arranged in a triangular shape for temporary fixation of the locking plate to prevent the locking plate from shifting when the locking screw is implanted. In addition, the locking plate has a wing plate area 3, and four wing plate locking holes 7 are provided in the wing plate area 3 to strengthen the fixation to prevent the displacement of the locking plate after the fracture or osteotomy patient. Through the triangular structure arrangement of the head area 1, the stem area 2 and the wing plate area 3, and the cross-fixation arrangement of the stem locking screw in the stem locking hole 9 and the wing plate locking screw in the wing plate locking hole 7, the fixing effect of the locking plate is enhanced. Since a long bending groove is provided between the trunk area 2 and the wing plate area 3, it is convenient for medical personnel to bend the plate body according to the bone size of the patient during the operation, so that the locking plate can be adapted to different patients.

[0031] This solution is designed based on the anatomical data of Chinese people, adjusting the size of the head area 1 and adding the wing plate area 3 to better match the patient's proximal tibia features and fit the bone morphology better during surgery. The head area 1 uses multiple head locking holes 6, with a total of six head locking holes 6 in the head area 1. The six head locking holes 6 are more conducive to the internal fixation of the proximal tibia; the stem area 2 is provided with a combination hole 8 and three stem locking holes 9; the wing plate area 3 is provided with four wing plate locking holes 7; the head area 1 is provided with two first guide pin holes 10, the stem area 2 is provided with a second guide pin hole 11, and a first slot 4 and a second slot 5 are provided between the stem area 2 and the wing plate area 3.

[0032] Compared with the prior art, the present invention has the following advantages:

[0033] 1. The head area 1 is designed with six head locking holes 6, three of which are arranged in a row and are parallel to the tibial plateau articular surface, effectively fitting the tibial plateau articular surface, and the other three head locking holes 6 are arranged in a triangle to fix the proximal tibia, enhance the anti-rotation ability of the locking plate, and provide stronger support.

[0034] 2. Add a design of the wing plate area 3. The wing plate area 3 is provided with four wing plate locking holes 7, one of which is provided at one end of the wing plate area 3 and close to the head area 1, and is separated from the other three wing plate locking holes 7 to enhance the fixation of the proximal tibia; the other three wing plate locking holes 7 are provided at the other end of the wing plate area 3 and close to the stem area 2. The wing plate locking holes 7 can enhance the locking plate and bear the stress before the osteotomy gap heals during the tibial osteotomy operation; the three wing plate locking holes 7 enhance the fixation of the tibial shaft, and a triangular structure is formed by the stem area 2 of the locking plate, the wing plate area 3 and the bone, and the stem locking screw in the stem locking hole 9 is cross-fixed with the wing plate locking screw in the wing plate locking hole 7 to enhance the fixing effect of the locking plate.

[0035] 3. The long bending groove design between the trunk area 2 and the wing plate area 3 enables the wing plate area 3 to be bent, so that the locking plate can be fixed more closely for patients with smaller bones.

[0036] In the description of the present invention, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, and may be fixedly connected, detachably connected, or integrated; may be mechanically connected or electrically connected; may be directly connected or indirectly connected through an intermediate medium, may be the internal connection of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood. In addition, the specific features, structures, etc. described in the embodiments are included in at least one embodiment. Under the condition that there is no contradiction, those skilled in the art may combine the features of different embodiments. The protection scope of the present invention is not limited to the above-mentioned specific embodiments. According to the basic technical concept of the present invention, the embodiments that can be associated with by ordinary technicians in this field without creative work all belong to the protection scope of the present invention.

Claims

1. A knee osteotomy locking plate, characterized in that: The invention comprises a plate body, wherein the plate body is provided with a head area (1), a stem area (2) and a wing plate area (3), wherein the head area (1), the stem area (2) and the wing plate area (3) are arranged in a triangular structure, and a long bending groove is provided between the stem area (2) and the wing plate area (3), and the wing plate area (3) can be bent toward the stem area (2), so that the plate body fits the bone surface of the patient.

2. The knee joint osteotomy locking plate according to claim 1, characterized in that: The bent long groove comprises a first groove body (4) and a second groove body (5), and the first groove body (4) and the second groove body (5) are arranged on the same straight line with an interval.

3. The knee joint osteotomy locking plate according to claim 1, characterized in that: The edges of the wing plate area (3) and the stem area (2) are transitioned through a bevel.

4. The knee joint osteotomy locking plate according to claim 1, characterized in that: The head area (1) is provided with a plurality of head locking holes (6).

5. The knee joint osteotomy locking plate according to claim 4, characterized in that: The head area (1) is provided with six head locking holes (6), of which three head locking holes (6) are arranged in a row and are parallel to the tibial plateau articular surface to fit the tibial plateau articular surface; the other three head locking holes (6) are arranged in a triangular shape and are fixed to the proximal end of the tibia to enhance the anti-rotation capability of the plate.

6. The knee joint osteotomy locking plate according to claim 1, characterized in that: The wing plate area (3) is provided with a plurality of wing plate locking holes (7).

7. The knee joint osteotomy locking plate according to claim 6, characterized in that: The wing plate area (3) is provided with four wing plate locking holes (7), one of which is arranged at one end of the wing plate area (3) and close to the head area (1) to enhance the fixation of the proximal tibia; the other three wing plate locking holes (7) are arranged at the other end of the wing plate area (3) and close to the trunk area (2).

8. The knee joint osteotomy locking plate according to claim 7, characterized in that: The stem area (2) is provided with a combining hole (8) and a stem locking hole (9), and the stem locking screw in the stem locking hole (9) is cross-fixed with the wing plate locking screw in the wing plate locking hole (7).

9. The knee joint osteotomy locking plate according to claim 8, characterized in that: The stem area (2) is provided with a combining hole (8) and three stem locking holes (9).

10. The knee joint osteotomy locking plate according to claim 1, characterized in that: The head area (1) is provided with two first needle guide holes (10); the stem area (2) is provided with a second needle guide hole (11), and the second needle guide hole (11) and the two first needle guide holes (10) are arranged in a triangle.

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