Personalized tarsometatarsal joint fixing plate based on 3D printing

Abstract

The invention discloses a personalized tarsometatarsal joint fixing plate based on 3D printing, which comprises a first fitting plate, a second fitting plate and a third fitting plate which are sequentially connected end to end to form a triangular structure, a first fixing part is arranged at the joint of the first attaching plate and the third attaching plate in an outward protruding mode. A second fixing part is arranged at the joint of the first attaching plate and the second attaching plate in an outward protruding mode. A third fixing part is arranged at the joint of the second attaching plate and the third attaching plate in an outward protruding mode. The first attaching plate and the third attaching plate are integrally arranged in an arc shape, and the second attaching plate is arranged in a linear shape. The first attaching plate, the second attaching plate, the third attaching plate, the first fixing part, the second fixing part and the third fixing part are integrally formed, the fixing plates can fix and support the inner cuneiform bone, the middle cuneiform bone and the second metatarsal bone, near-tarsometatarsal joint injury is treated, the problem that the implanting difficulty of a hollow screw is too high is solved, and the fixing effect is good. The operation time can be shortened, and the operation risk and cost are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of orthopedic surgical instruments and the like, and in particular to a personalized tarsometatarsal joint fixation plate based on 3D printing. Background Art

[0002] Tarsometatarsal joint injury is an important type of injury in foot and ankle trauma, with a high rate of misdiagnosis and missed diagnosis, great difficulty in treatment, and poor long-term efficacy. At present, there are still certain limitations in the diagnosis and treatment of this type of injury. First, the existing classification system is not systematic and comprehensive, and cannot guide treatment and indicate prognosis, and has limited clinical significance; second, there is still a lack of internal fixation systems for different classifications, especially ignoring the importance of "intra-column" and "inter-column" stability, which cannot meet the needs of individualized precision treatment.

[0003] In tarsometatarsal joint reduction and fixation surgery, the stability of the intercuneiform joint is the basis of tarsometatarsal joint stability, because the cuneiform joint is the template for tarsometatarsal joint reduction. If there is displacement or instability in the intercuneiform joint, it will inevitably affect the stability of the entire Lisfranc complex. Current studies believe that occult Lisfranc injury (or subtle Lisfranc injury) is not a simple injury or rupture of the Lisfranc ligament, nor is it a simple widening of the medial space. It may be combined with injury or instability of the medial and middle intercuneiform joints. Therefore, they often need to be treated simultaneously during surgery.

[0004] In the prior art, hollow screws are often used to fix the tarsometatarsal joint, that is, one intercuneiform screw and one Lisfranc screw are used for fixation. However, screw fixation may have the risk of damaging the joint surface, and has high requirements for the direction of screw placement. Once the hollow screw breaks, it is difficult to remove it, which puts the patient at a high risk of surgery.

[0005] There is also a fixation method using two fixation plates in the prior art, that is, using two fixation plates to fix the medial-intermediate cuneiform and the medial cuneiform-second metatarsal base respectively. The advantage of using this solution is that the implantation operation requirements are reduced and the risk of joint surface injury is reduced. However, the two fixation plates significantly increase the patient's surgical costs, and standardized fixation plates are difficult to meet personalized precision treatment.

[0006] Therefore, those skilled in the art are committed to developing a personalized tarsometatarsal joint fixation plate based on 3D printing to solve the technical problems existing in the prior art. Summary of the invention

[0007] In view of this, in order to solve the above problems, the object of the present invention is to provide a personalized tarsometatarsal joint fixation plate based on 3D printing, which includes:

[0008] A first laminating plate, a second laminating plate, and a third laminating plate;

[0009] The first bonding plate, the second bonding plate and the third bonding plate are connected end to end in sequence to form a triangular structure;

[0010] A first fixing portion is protruding outwardly from the connection between the first bonding plate and the third bonding plate;

[0011] A second fixing portion is protruding outwardly from the connection between the first bonding plate and the second bonding plate;

[0012] A third fixing portion is protruding outwardly from the connection between the second bonding plate and the third bonding plate;

[0013] The first bonding plate and the third bonding plate are arranged in an arc shape as a whole, and the second bonding plate is arranged in a straight line shape.

[0014] In the above-mentioned personalized tarsometatarsal joint fixation plate based on 3D printing, the first fixing portion, the second fixing portion and the third fixing portion are each provided with a first threaded hole.

[0015] In the above-mentioned personalized tarsometatarsal joint fixation plate based on 3D printing, the first fixing portion, the second fixing portion and the third fixing portion are all arranged in an arc shape.

[0016] In the above-mentioned personalized tarsometatarsal joint fixation plate based on 3D printing, the first bonding plate, the second bonding plate and the third bonding plate are respectively provided with a plurality of second threaded holes.

[0017] In the above-mentioned personalized tarsometatarsal joint fixation plate based on 3D printing, one end of the first laminating plate close to the first fixing portion is arranged in an arc shape, and one end of the first laminating plate close to the second fixing portion is arranged in a straight line shape.

[0018] In the above-mentioned personalized tarsometatarsal joint fixation plate based on 3D printing, one end of the third laminating plate close to the first fixing portion is arranged in an arc shape, and one end of the third laminating plate close to the third fixing portion is arranged in a straight line shape.

[0019] In the above-mentioned personalized tarsometatarsal joint fixation plate based on 3D printing, the first bonding plate, the second bonding plate and the third bonding plate are integrally formed.

[0020] Compared with the prior art, the above technical solution has the following positive effects:

[0021] 1. The present application adopts an integrated design of a first bonding plate, a second bonding plate, a third bonding plate, a first fixing part, a second fixing part and a third fixing part to achieve fixation and support of the medial cuneiform, the middle cuneiform and the second metatarsal by the fixing plate, so as to achieve the treatment of tarsometatarsal joint injuries, which not only avoids the problem of excessive difficulty in hollow screw implantation, but also shortens the operation time and reduces the surgical risks and costs.

[0022] 2. This application uses artificial intelligence technology to make decisions and designs based on personalized medical images of patients, and uses 3D printing technology to form an integrated device, which fits the patient's bone surface precisely, is not likely to cause soft tissue irritation, and is not likely to cause damage to the joint surface, and the overall fixation effect is more reliable. This is a new application of artificial intelligence technology and precision medical technology in the field of foot and ankle orthopedics. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The present invention is a schematic diagram of a personalized tarsometatarsal joint fixation plate based on 3D printing.

[0024] Figure 2 The present invention is a stereoscopic diagram of a personalized tarsometatarsal joint fixation plate based on 3D printing.

[0025] Figure 3 The figure is a side view of a personalized tarsometatarsal joint fixation plate based on 3D printing according to the present invention.

[0026] 1. First fixing part; 2. First bonding plate; 3. Second fixing part; 4. Second bonding plate; 5. Third fixing part; 6. Third bonding plate; 7. First threaded hole; 8. Second threaded hole. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with the accompanying drawings and specific implementations, but they are not intended to limit the present invention.

[0028] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical contents disclosed by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical contents.

[0029] like Figures 1 to 3As shown, a preferred embodiment of a personalized tarsometatarsal joint fixation plate based on 3D printing is shown, which includes: a first bonding plate 2, a second bonding plate 4, and a third bonding plate 6.

[0030] The first bonding plate 2, the second bonding plate 4 and the third bonding plate 6 are connected end to end in sequence to form a triangular structure; the connection between the first bonding plate 2 and the third bonding plate 6 is provided with a first fixing portion 1 protruding outward; the connection between the first bonding plate 2 and the second bonding plate 4 is provided with a second fixing portion 3 protruding outward; the connection between the second bonding plate 4 and the third bonding plate 6 is provided with a third fixing portion 5 protruding outward; the first bonding plate 2 and the third bonding plate 6 are arranged in an arc shape as a whole, and the second bonding plate 4 is arranged in a straight line.

[0031] In actual use, the first bonding plate 2, the second bonding plate 4, the third bonding plate 6, the first fixing part 1, the second fixing part 3 and the third fixing part 5 of the triangular structure are used to fix and support the medial cuneiform, the middle cuneiform and the second metatarsal bone to achieve the treatment of tarsometatarsal joint injuries, which not only avoids the problem of high difficulty in hollow screw implantation, but also shortens the operation time and reduces the surgical risks and costs.

[0032] The present invention also has the following implementation modes based on the above:

[0033] Furthermore, a personalized tarsometatarsal joint fixation plate based on 3D printing is provided, wherein the first fixing portion 1, the second fixing portion 3 and the third fixing portion 5 are each provided with a first threaded hole 7. Specifically, after the first bonding plate 2, the second bonding plate 4 and the third bonding plate 6 are placed at the desired positions, the fixing plates are fixed by screws passing through the first fixing portion 1, the second fixing portion 3 and the third fixing portion 5.

[0034] Further, a personalized tarsometatarsal joint fixation plate based on 3D printing, wherein the first fixing portion 1, the second fixing portion 3 and the third fixing portion 5 are all arranged in an arc shape. Specifically, the protruding positions of the first fixing portion 1, the second fixing portion 3 and the third fixing portion 5 are all arranged in an arc shape.

[0035] Furthermore, a personalized tarsometatarsal joint fixation plate based on 3D printing is provided, wherein the first bonding plate 2, the second bonding plate 4 and the third bonding plate 6 are respectively provided with a plurality of second threaded holes 8. Specifically, the number and position of the second threaded holes 8 can be adjusted on the first bonding plate 2, the second bonding plate 4 and the third bonding plate 6 according to actual needs.

[0036] In this embodiment, the second threaded hole 8 on the first bonding plate 2 is arranged close to the first fixing portion 1 , and two second threaded holes 8 are arranged on the second bonding plate 4 , which are respectively close to the second fixing portion 3 and the third fixing portion 5 .

[0037] In another embodiment, the second threaded hole 8 on the third bonding portion 6 is close to the first fixing portion 1 , and two second threaded holes 8 are provided on the second bonding plate 4 , and the two second threaded holes 8 are respectively close to the second fixing portion 3 and the third fixing portion 5 .

[0038] Furthermore, a personalized tarsometatarsal joint fixation plate based on 3D printing is provided, wherein one end of the first laminating plate 2 close to the first fixing portion 1 is arranged in an arc shape, and one end of the first laminating plate 2 close to the second fixing portion 3 is arranged in a straight line shape.

[0039] Furthermore, a personalized tarsometatarsal joint fixation plate based on 3D printing is provided, wherein one end of the third laminating plate 6 close to the first fixing portion 1 is arranged in an arc shape, and one end of the third laminating plate 6 close to the third fixing portion 5 is arranged in a straight line shape.

[0040] Furthermore, a personalized tarsometatarsal joint fixation plate based on 3D printing is provided, wherein the first laminating plate 2, the second laminating plate 4 and the third laminating plate 6 are integrally formed.

[0041] In a preferred embodiment, the second bonding plate 4 is linear, while the first bonding plate 2 and the third bonding plate 6 are arc-shaped. One end of the first bonding plate 2 is connected to the first fixing portion 1, and the portion of the first bonding plate 2 close to the first fixing portion 1 is in contact with the surface of the medial cuneiform, so the portion is arc-shaped; the other end of the first bonding plate 2 is connected to the second fixing portion 3, and the portion of the first bonding plate 2 close to the second fixing portion 3 is in contact with the surface of the second metatarsal, so the portion is linear. One end of the third bonding plate 6 is connected to the first fixing portion 1, and the portion of the third bonding plate 6 close to the first fixing portion 1 is in contact with the surface of the medial cuneiform, so the portion is arc-shaped; the other end of the third bonding plate 6 is connected to the third fixing portion 5, and the portion of the third bonding plate 6 close to the third fixing portion 5 is in contact with the surface of the intermediate cuneiform, so the portion is linear.

[0042] In addition, the first laminating plate 2, the second laminating plate 4, the third laminating plate 6, the first fixing part 1, the second fixing part 3 and the third fixing part 5 are integrally formed, and the automatic design software based on artificial intelligence technology automatically diagnoses and designs the medical images of the relevant parts of the patient's foot, and generates a digital model of the fixing plate. Through a 3D printer, a fixing plate that matches the patient's individuality is printed once, and the laminating plate can accurately fit the patient's tarsometatarsal joint. Therefore, the fixing plate of this embodiment will not cause soft tissue irritation and avoid damage to the joint surface. This embodiment is a brand-new application of artificial intelligence technology and personalized precision medical technology in the field of foot and ankle orthopedics.

[0043] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A personalized tarsometatarsal joint fixation plate based on 3D printing, characterized in that: include: A first laminating plate, a second laminating plate, and a third laminating plate; The first bonding plate, the second bonding plate and the third bonding plate are connected end to end in sequence to form a triangular structure; A first fixing portion is protruding outwardly from the connection between the first bonding plate and the third bonding plate; A second fixing portion is protruding outwardly from the connection between the first bonding plate and the second bonding plate; A third fixing portion is protruding outwardly from the connection between the second bonding plate and the third bonding plate; The first bonding plate and the third bonding plate are arranged in an arc shape as a whole, and the second bonding plate is arranged in a straight line shape.

2. The personalized tarsometatarsal joint fixation plate based on 3D printing according to claim 1, characterized in that: The first fixing portion, the second fixing portion and the third fixing portion are each provided with a first threaded hole.

3. The personalized tarsometatarsal joint fixation plate based on 3D printing according to claim 1, characterized in that: The first fixing portion, the second fixing portion and the third fixing portion are all arranged in an arc shape.

4. The personalized tarsometatarsal joint fixation plate based on 3D printing according to claim 1, characterized in that: The first bonding plate, the second bonding plate and the third bonding plate are respectively provided with a plurality of second threaded holes.

5. The personalized tarsometatarsal joint fixation plate based on 3D printing according to claim 1, characterized in that: One end of the first bonding plate close to the first fixing portion is arranged in an arc shape, and one end of the first bonding plate close to the second fixing portion is arranged in a straight line shape.

6. The personalized tarsometatarsal joint fixation plate based on 3D printing according to claim 1, characterized in that: One end of the third bonding plate close to the first fixing portion is arranged in an arc shape, and one end of the third bonding plate close to the third fixing portion is arranged in a straight line shape.

7. The personalized tarsometatarsal joint fixation plate based on 3D printing according to claim 1, characterized in that: The first bonding plate, the second bonding plate and the third bonding plate are integrally formed.

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