Absorbable osteoporotic fracture fixing device

Abstract

The utility model discloses an absorbable osteoporotic fracture fixing device which comprises a fixing plate, suture anchor knots and suture lines, the fixing plate is made of absorbable materials, the fixing plate and the suture anchor knots are located on the two sides of a fracture part respectively, and the fixing plate is located on the side close to a wound; the suture line is arranged on the fixing plate and the suture anchor knot in a penetrating mode and used for connecting the fixing plate and the suture anchor knot, and the suture line is tensioned so as to drive the fixing plate and the suture anchor knot to conduct compression fixation on the fracture part. The absorbable fixing plate and the suture anchor knots are arranged on the two sides of the fracture position to pressurize and fix the fracture position, the fixing plate can be absorbed, the step of opening a wound to take out the fixing plate in the later period is avoided, and the operation is more convenient.

Description

Technical Field

[0001] This application relates to the field of medical device technology, specifically to an absorbable osteoporotic fracture fixation device. Background Technology

[0002] For patients with osteoporotic fractures, such as fractures of the greater tuberosity of the humerus and fractures of the greater trochanter of the femur, there are currently two main fixation methods.

[0003] One method involves using screws to fix the fracture site. This method often requires drilling through the cortical bone on the opposite side to achieve a certain holding force. However, because osteoporosis patients have decreased bone quality and sparse trabeculae, this method of fixation is not secure and often results in fixation failure, screw extrusion, or penetration of the bone, leading to surgical failure.

[0004] Another method is to use a combination of steel plates and screws for fixation. However, this method also has many drawbacks, such as extensive exposure of the surgical area, extensive dissection, and insufficient holding force when the steel plates and screws enter the osteoporotic structure. If complications such as implant reaction occur later, a second surgery is required to remove the implant.

[0005] The inventors disclosed a fixation device for osteoporotic fractures in patent application number 202420655173.6, which uses an X-shaped steel plate and a straight steel plate to clamp and fix the fracture site on both sides. However, on the one hand, the initial insertion of the straight steel plate is relatively complicated; on the other hand, the X-shaped steel plate and the straight steel plate need to be surgically removed later, which is quite troublesome. Utility Model Content

[0006] Therefore, this application provides an absorbable osteoporotic fracture fixation device to solve the problems of unstable fixation, insufficient holding force, and cumbersome operation of existing fracture fixation methods.

[0007] To achieve the above objectives, this application provides the following technical solution:

[0008] An absorbable osteoporotic fracture fixation device includes a fixation plate, suture anchor knots, and sutures. The fixation plate is made of absorbable material, and the fixation plate and suture anchor knots are located on opposite sides of the fracture site, with the fixation plate positioned closer to the wound. The sutures are threaded through the fixation plate and suture anchor knots to connect them, and the sutures are tightened to compress and fix the fracture site with pressure from the fixation plate and suture anchor knots.

[0009] Optionally, the main body of the suture is connected to a suture anchor knot, and both ends of the suture pass through a fixation plate and extend to the side of the fixation plate facing the wound.

[0010] Optionally, the fixation plate is bent to form an arc-shaped structure adapted to the fracture location.

[0011] Optionally, the fixing plate is a butterfly-shaped or X-shaped structure.

[0012] Optionally, the fixing plate is provided with at least 3 thread holes, through which the suture thread can pass.

[0013] Optionally, the threading holes are located near the edge of the fixing plate and are evenly distributed in the circumferential direction.

[0014] Optionally, the surface of the fixation plate is provided with spikes facing the side of the fracture site.

[0015] Optionally, the protrusion is located outside the thread hole.

[0016] Compared with the prior art, this application has at least the following beneficial effects:

[0017] 1. The fixation plate is made of absorbable material, which is gradually absorbed as the wound heals, eliminating the need for removal later and improving convenience. Furthermore, the suture anchor knots are small, making placement at the fracture site simpler and less invasive.

[0018] 2. Using sutures to tighten the fixation plate and suture anchor knots, pressure is applied to both sides of the fracture site for fixation, which facilitates reduction and better meets mechanical requirements.

[0019] 3. Multiple suture holes are provided to facilitate the application of pressure to different positions of the fixation plate by the sutures, thereby improving the fixation effect on the fracture site.

[0020] 4. The protrusions can penetrate the bone, making it easier to reinforce the position of the fixation plate, preventing displacement of the fixation plate and ensuring the healing effect. Attached Figure Description

[0021] To more intuitively illustrate the prior art and this application, exemplary drawings are provided below. It should be understood that the specific shapes and structures shown in the drawings should not generally be regarded as limiting conditions for implementing this application; for example, based on the technical concept disclosed in this application and the exemplary drawings, those skilled in the art are able to easily make conventional adjustments or further optimizations to the addition / reduction / classification, specific shapes, positional relationships, connection methods, size ratios, etc. of certain units (components).

[0022] Figure 1 A schematic diagram of the structure of an absorbable osteoporotic fracture fixation device provided in an embodiment of this application;

[0023] Figure 2 This is a schematic diagram illustrating the usage of an absorbable osteoporotic fracture fixation device according to an embodiment of this application.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Fixing plate; 2. Thread anchor knot; 3. Suture thread; 4. Thread hole; 5. Protrusion. Detailed Implementation

[0026] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] In the description of this application: unless otherwise stated, "multiple" means two or more. Expressions such as "including," "comprising," and "having" also mean "not limited to" (certain units, components, materials, steps, etc.).

[0028] The terms used in this application, such as "upper," "lower," "left," "right," and "middle," are generally used to indicate the general relative positional relationship for the purpose of intuitive understanding by referring to the accompanying drawings, and are not absolute limitations on the positional relationship in the actual product.

[0029] An absorbable osteoporotic fracture fixation device, as described above. Figure 1 and Figure 2 The device includes a fixing plate 1, a suture anchor knot 2, and a suture 3, the suture 3 being made of ultra-high molecular weight polyethylene. The suture anchor knot 2 is existing technology in the medical field, therefore its specific structure will not be described in detail in this patent.

[0030] Fixation plate 1 and suture anchor knot 2 are located on both sides of the fracture site, with fixation plate 1 on the side closer to the wound. Suture 3 is threaded through fixation plate 1 and suture anchor knot 2 to connect the two, and suture 3 is tightened to compress and fix the fracture site with pressure from fixation plate 1 and suture anchor knot 2.

[0031] During the surgery, a perforation is made at the fracture site beforehand. An anchor with suture 3 inserted is then inserted through a tool and placed behind the fracture site. The suture 3 is then tightened, causing the anchor to expand into a knot that holds against the bone without passing through the perforation.

[0032] To facilitate the knotting and fixing of the suture 3, the main body of the suture 3 is connected to the anchor for fixation, and the two ends of the suture 3 pass through the fixation plate 1 and extend to the side of the fixation plate 1 facing the wound, so as to facilitate the pulling of the ends of the suture 3 for knotting and cutting.

[0033] In this application, to facilitate fracture surgery, the fixation plate 1 is made of absorbable materials such as polylactic acid (PLA), polyglycolic acid (PGA), trimethylene carbonate (TMC), and hydroxyapatite (HA). As the wound heals, the fixation plate 1 is gradually absorbed by the body, and the patient does not need to go to the hospital to remove the fixation plate 1 after healing.

[0034] To improve the fit between the fixation plate 1 and the bone, the fixation plate 1 is manufactured as a curved plate structure to adapt to the bone anatomy of the specific application site and to match the fracture location. Specifically, the fixation plate 1 has a butterfly-shaped or X-shaped structure.

[0035] At least three thread-passing holes 4 are provided on the fixing plate 1, through which the suture 3 can pass. In order to improve the pressure effect of the suture 3 on the fixing plate 1, the thread-passing holes 4 are located near the edge of the fixing plate 1 and are evenly distributed in the circumferential direction.

[0036] In this application, four threading holes 4 are provided and are respectively arranged on the four protruding parts of the fixation plate 1. The threading holes allow surrounding soft tissues, such as ligaments and rotator cuff tissues, to pass through and be fixed with the sutures. Two sutures 3 are provided correspondingly, with their ends passing through the four threading holes 4 respectively, so as to tighten and fix the fixation plate 1 at different positions.

[0037] The surface of the fixation plate 1 is provided with a plurality of protrusions 5, the protrusions 5 facing the fracture site for inserting into the bone. In this application, the number of protrusions 5 is the same as the number of suture holes 4, with 4 protrusions, and each protrusion is located on the outside of the corresponding suture hole 4.

[0038] The implementation principle of this application embodiment is as follows: by passing the main body of the suture 3 through the anchor, and then passing the anchor through the perforation at the fracture site, the suture 3 is tightened, and the anchor part expands into a knot, blocking one side of the perforation.

[0039] The end of the suture 3 is passed through the four suture holes 4 on the fixation plate 1, the fixation plate 1 is attached to the fracture site, and the protrusion 5 is inserted into the bone. Finally, the suture 3 is tightened and knotted for fixation.

[0040] The technical features of the above embodiments can be combined in any way (as long as there is no contradiction in the combination of these technical features). For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described, including the supporting tools when the device is used and the improvements made to the supporting tools; these embodiments not explicitly written should also be considered to be within the scope of this specification.

Claims

1. An absorbable osteoporotic fracture fixation device, characterized by: The application relates to a fixing plate (1), a suture anchor (2) and a suture (3), wherein the fixing plate (1) is made of absorbable material, the fixing plate (1) and the suture anchor (2) are respectively arranged on the two sides of a fracture position, and the fixing plate (1) is arranged on the side close to a wound; the suture (3) is arranged on the fixing plate (1) and the suture anchor (2) to connect the two, and the suture (3) is pulled tight to drive the fixing plate (1) and the suture anchor (2) to press and fix the fracture position.

2. The absorbable osteoporotic fracture fixation device of claim 1, wherein: The main body of the suture (3) is connected to the suture anchor (2), and the two ends of the suture (3) pass through the fixing plate (1) and extend to the side of the fixing plate (1) close to the wound.

3. The absorbable osteoporotic fracture fixation device of claim 1, wherein: The fixing plate (1) is curved to form an arc structure matched with the fracture position.

4. The absorbable osteoporotic fracture fixation device of claim 3, wherein: The fixing plate (1) is in a butterfly shape or X shape.

5. The absorbable osteoporotic fracture fixation device of claim 4, wherein: At least three threading holes (4) are arranged on the fixing plate (1), and the suture (3) can pass through the threading holes (4).

6. The absorbable osteoporotic fracture fixation device of claim 5, wherein: The threading holes (4) are arranged close to the edges of the fixing plate (1) and are uniformly distributed in the circumferential direction.

7. The absorbable osteoporotic fracture fixation device of claim 5, wherein: Spikes (5) are arranged on the surface of the fixing plate (1), and the spikes (5) are arranged on the side close to the fracture position.

8. The absorbable osteoporotic fracture fixation device of claim 7, wherein: The spikes (5) are arranged outside the threading holes (4).

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