A minimally invasive intramedullary nail-plate orthosis for treating hallux valgus

Abstract

This utility model discloses a minimally invasive intramedullary nail-plate orthosis for treating hallux valgus, comprising an intramedullary nail-plate divided into a distal end and a proximal end. The intramedullary nail-plate has positioning holes through which screws pass. The proximal end is designed as a cylindrical structure, while the distal end is designed as a flat structure. The distal end may be offset laterally, medially, or not offset at all. The surface of the proximal end has grooves. Three positioning holes are provided, namely positioning hole A, positioning hole B, and positioning hole C. Positioning holes A and C are respectively fitted with corresponding screws I and II. This fixation structure is ingeniously designed. The hallux valgus intramedullary nail-plate orthosis allows for different orthotic models to be used depending on the severity of the hallux valgus and the design of the outward offset distance. Implantation of the hallux valgus intramedullary nail-plate orthosis can significantly reduce the recurrence rate of hallux valgus. It also features convenient operation, fewer intraoperative fluoroscopy sessions, minimal interference with fracture ends, and promotes rapid fracture healing.

Description

Technical Field

[0001] This utility model relates to the field of intramedullary nail plate orthotics for hallux valgus, specifically a minimally invasive intramedullary nail plate orthotics for treating hallux valgus. Background Technology

[0002] In the treatment of hallux valgus surgery, cannulated screws and Kirschner wires are often used for fixation. The existing method of fixing hallux valgus with cannulated screws and Kirschner wires involves implanting the screws or Kirschner wires into the corrected metatarsal bone. This method has the following drawbacks: First, it is not easy to control the rotation of a single cannulated screw, and the fixation strength is relatively weak. The number of intraoperative fluoroscopy sessions is relatively high, and there is a risk of the cannulated screw breaking under external force. Kirschner wire fixation needs to be left outside the body, causing inconvenience to the patient's life and requiring multiple fluoroscopy sessions. Second, if the metatarsal fracture ends are not fully healed, the patient may start walking too early. At this time, there is a risk of displacement of the cannulated screws and Kirschner wires. In clinical practice, there is a risk of surgical failure due to loosening and breakage of cannulated screws and Kirschner wires, requiring reoperation and causing pain to the patient. In order to address the above problems, a minimally invasive intramedullary nail-plate orthosis for the treatment of hallux valgus is proposed. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a minimally invasive intramedullary nail plate orthosis for treating hallux valgus. The fixation structure is ingeniously designed, and different models of orthosis can be applied according to the severity of hallux valgus by adjusting the degree of outward tilt. It is convenient to operate, safe and effective, reduces the number of intraoperative fluoroscopy sessions, and is widely applicable to hallux valgus surgery, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a minimally invasive intramedullary nail plate orthotist for treating hallux valgus, comprising an intramedullary nail plate, the intramedullary nail plate being divided into a distal end and a proximal end, the intramedullary nail plate being provided with a positioning hole, a screw passing through the positioning hole, the proximal end being configured as a columnar structure, the distal end being configured as a flat structure, the distal end being offset outward, inward or not offset, and the surface of the proximal end being provided with a groove.

[0005] Furthermore, three positioning holes are provided, namely positioning hole A, positioning hole B and positioning hole C, and corresponding screw I and screw II are provided in positioning hole A and positioning hole C respectively.

[0006] Furthermore, the distal end is offset inward by 2mm, 4mm, or 6mm.

[0007] Furthermore, the distal end does not deviate, and the distal end and the proximal end are in a straight line.

[0008] Furthermore, the distal end is offset outward by 2mm or 4mm.

[0009] Furthermore, the intramedullary nail plate is supported by stainless steel or titanium alloy.

[0010] Furthermore, the diameter of the proximal end gradually decreases, and the end is set into an arc-shaped structure.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This fixation structure is ingeniously designed, using an intramedullary nail-plate orthosis for hallux valgus. The outward offset distance is designed according to the severity of hallux valgus, and different models of orthotics can be used individually. By implanting the intramedullary nail-plate orthosis for hallux valgus, the recurrence rate of hallux valgus can be significantly reduced. It has the characteristics of convenient operation, safety and effectiveness, fewer intraoperative fluoroscopy times, good corrective effect, small surgical incision, minimal interference with fracture ends and promotion of rapid fracture healing. It can be widely used in minimally invasive hallux valgus surgery to improve the success rate of minimally invasive hallux valgus surgery.

[0013] The cylindrical structure at the proximal end facilitates insertion into the medullary canal of the proximal metatarsal, while the flattened structure at the distal end facilitates fixation and connection to the lateral distal metatarsal, providing convenience for surgery, preventing rotation, and making the fixation structure more robust. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the fixed position structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the distal end offset inward structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the present invention, showing whether the distal end is offset to the outside or not.

[0018] In the diagram: 1 Intramedullary nail plate, 2 Distal end, 3 Proximal end, 4 Positioning hole A, 5 Positioning hole B, 6 Positioning hole C, 7 Screw I, 8 Screw II. Detailed Implementation

[0019] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] Please see Figure 1-4This utility model provides a technical solution: a minimally invasive intramedullary nail-plate orthodontic device for treating hallux valgus, comprising an intramedullary nail plate 1, the intramedullary nail plate 1 being divided into a distal end 2 and a proximal end 3, as shown in the attached figure. Figure 2 As shown, during use, the proximal end 3 penetrates the proximal medullary canal of the metatarsal, and the distal end 2 is fixed to the distal cortex of the metatarsal. The intramedullary nail plate 1 is provided with positioning holes, through which screws are inserted. The intramedullary nail plate 1 is fixedly connected to the metatarsal by the screws. The proximal end 3 is designed as a columnar structure, and the distal end 2 is designed as a flat structure. The columnar structure of the proximal end 3 facilitates penetration into the proximal medullary canal of the metatarsal, and the flat structure of the distal end 2 facilitates fixation to the lateral aspect of the distal metatarsal, providing convenience for surgery, preventing rotation, and making the fixation structure more secure. The distal end 2 can be offset laterally, medially, or not offset. This offset structure is beneficial for cooperation with hallux valgus, facilitating the implementation of minimally invasive hallux valgus surgery. The surface of the proximal end 3 is provided with grooves. The added groove structure helps to increase the friction with the proximal medullary canal, making the structure more stable.

[0021] There are three positioning holes, namely positioning hole A4, positioning hole B5 and positioning hole C6. Positioning hole A4 and positioning hole C6 are respectively equipped with corresponding screw I7 and screw II8, which are used to fix the intramedullary nail plate 1.

[0022] The distal end 2 is offset inward by 2mm, 4mm or 6mm, the distal end 2 is not offset, the distal end 2 and the proximal end 3 are in a straight line, and the distal end 2 is offset outward by 2mm or 4mm.

[0023] The intramedullary nail plate 1 is supported by stainless steel or titanium alloy, and can also be made of any orthopedic implant material that can be used in the human body.

[0024] The diameter of the proximal end 3 gradually decreases, and the end is set in an arc-shaped structure to facilitate the insertion of the proximal end 3 into the medullary cavity of the metatarsal bone.

[0025] In use: the proximal end 3 of the intramedullary nail plate 1 is in the medullary canal of the proximal metatarsal, and the offset distal end 2 is outside the medial cortex of the distal metatarsal osteotomy. The proximal metatarsal and the proximal end 3 of the intramedullary nail plate 1 are nailed together by screw II8. Screw I7 fixes the distal end 2 of the intramedullary nail plate 1 to the external cortex of the distal metatarsal. Screw II8 is first locked into the proximal end 3 through positioning holes A4 and B5.

[0026] The foregoing has shown and described the basic principles, main features and advantages of this utility model. Various changes and modifications may be made to this utility model without departing from the spirit and scope thereof, and all such changes and modifications fall within the scope of this utility model as claimed.

Claims

1. A minimally invasive treatment hallux valgus intramedullary nail plate orthosis, comprising an intramedullary nail plate (1), characterized in that: The intramedullary nail plate (1) is divided into a distal end (2) and a proximal end (3). The intramedullary nail plate (1) is provided with positioning holes, and screws are inserted in the positioning holes. The proximal end (3) is set as a columnar structure, and the distal end (2) is set as a flat structure. The distal end (2) is offset to the outside, inside or not offset. The surface of the proximal end (3) is provided with grooves.

2. The minimally invasive treatment hallux valgus intramedullary nail plate orthosis according to claim 1, characterized in that: There are three positioning holes, namely positioning hole A (4), positioning hole B (5) and positioning hole C (6). Screw I (7) and screw II (8) are respectively installed in positioning hole A (4) and positioning hole C (6).

3. The minimally invasive treatment hallux valgus intramedullary nail plate orthosis according to claim 1, characterized in that: The distal end (2) is offset inward by 2mm, 4mm or 6mm.

4. The minimally invasive treatment hallux valgus intramedullary nail plate orthosis according to claim 1, characterized in that: The distal end (2) is not offset, and the distal end (2) and the proximal end (3) are in a straight line.

5. The minimally invasive treatment hallux valgus intramedullary nail plate orthosis according to claim 1, characterized in that: The distal end (2) is offset outward by 2mm or 4mm.

6. The minimally invasive treatment hallux valgus intramedullary nail plate orthosis according to claim 1, characterized in that: Intramedullary nail plate (1) is supported by stainless steel or titanium alloy.

7. The minimally invasive intramedullary nail-plate orthosis for treating hallux valgus according to claim 1, characterized in that: The diameter of the near end (3) gradually decreases, and the end is set into an arc-shaped structure.

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