Clavicle far-end bone setting device made of memory alloy material

Abstract

The utility model relates to the technical field of medical instruments, in particular to a far-end clavicle setting device made of memory alloy materials, which comprises a fixing part, a bent acromion fixing part is arranged at one end of the fixing part, a far-end crimping part is arranged at the end of the fixing part, and the far-end crimping part is arranged on the upper portion of one side of the acromion fixing part. And the far-end crimping part is arranged to fix the comminuted distal clavicle fracture, and the fixing effect is safe and reliable. And the far-end crimping part is arranged to fix the comminuted distal clavicle fracture, and the fixing effect is safe and reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a clavicle distal end bone setting device made of memory alloy. Background Art

[0002] Distal clavicle fractures account for about 10-30% of clavicle fractures. Because the distal clavicle is relatively superficial, most of them are comminuted fractures, and conservative treatment often has a poor prognosis. Currently, open reduction and internal fixation are generally used in clinical practice for various distal clavicle fractures to achieve anatomical reduction and strengthen internal fixation for early mobilization. In order to achieve postoperative stability of the fracture end, hook-shaped titanium alloy steel plates are often used as internal fixation devices for comminuted distal clavicle fractures, but they often have the following disadvantages:

[0003] (1) The distal end of the hook-shaped titanium alloy plate often does not match the distal end of the clavicle well and cannot fully wrap the distal end, making it difficult to achieve strong and effective fixation;

[0004] (2) Therefore, some clinical workers often choose hollow screws to assist in fracture fixation. However, when hollow screws are used to fix smaller fracture fragments, there is a risk of bone fragment bursting or affecting the function of the acromioclavicular joint. Therefore, usually only one screw can be used for fixation, but it cannot prevent bone fragment rotation. Figure 1 As shown, bone fixation is difficult or inadequate, and the risk of postoperative fracture fragment displacement increases.

[0005] Therefore, it is particularly important to develop an effective and reliable internal fixation. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide a clavicle distal fracture fixation device made of a memory alloy in view of the above-mentioned technical deficiencies. The distal crimping part is set to achieve fixation of comminuted clavicle distal fractures, thereby solving the problem that the existing fixation devices are difficult to achieve strong and effective fixation.

[0007] In order to solve the above technical problems, the technical solution adopted by the utility model is: a distal clavicle bone fixation device made of memory alloy, including a fixing part, one end of which is provided with a bent acromion fixing part, and the end of the fixing part is provided with a distal crimping part, which is arranged on an upper part of one side of the acromion fixing part.

[0008] To further optimize the technical solution, a hook portion is provided at one end of the distal crimping portion away from the fixing portion.

[0009] To further optimize the technical solution, three hook portions are radially provided at one end of the distal crimping portion away from the fixing portion, and the three hook portions form a three-claw structure.

[0010] To further optimize the technical solution, the distal crimping portion is a plate-like structure, and at least two groups of nail holes are provided at one end of the distal crimping portion away from the fixing portion.

[0011] To further optimize the technical solution, a plurality of groups of fixing holes are provided in the fixing portion.

[0012] To further optimize the technical solution, the entirety of the distal clavicle osteosynthesis device is made of a memory alloy.

[0013] Compared with the prior art, the utility model has the following advantages:

[0014] 1. The distal crimping part is set to fix the comminuted distal clavicle fracture, and the fixation effect is safe and reliable;

[0015] 2. The distal bone block is fixed by the provided hook, which effectively reduces the risk of bone block bursting and is safe and reliable;

[0016] 3. The three-claw structure can further reliably grasp the bone to prevent it from loosening;

[0017] 4. The whole bone setting device is made of memory alloy material, and the material properties of the memory alloy are used to achieve better adhesion of the bone setting device to the bone block and better stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of a conventional bone setting device in the background art when in use;

[0019] Figure 2 A top view of a first embodiment of a distal clavicle bone fixation device made of a memory alloy;

[0020] Figure 3 This is a side view of the first embodiment before use;

[0021] Figure 4 It is a side view of the distal crimping portion after use of the first embodiment;

[0022] Figure 5 A schematic structural diagram of a second embodiment of a distal clavicle bone fixation device made of a memory alloy;

[0023] Figure 6 This is a side view of the second embodiment when in use.

[0024] In the figure: 1, fixing part; 11, fixing hole; 2, acromion fixing part; 3, distal crimping part; 31, hook part. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in conjunction with the reference drawings of specific embodiments. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0026] It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. used in this application document to indicate positions or positional relationships are based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present disclosure. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. Embodiment 1:

[0027] Combination Figures 2 to 4 As shown, a clavicle distal bone fixation device made of memory alloy material, the entire clavicle distal bone fixation device is made of memory alloy material of nickel-titanium alloy, including a fixing part 1 and an acromion fixing part 2, and a plurality of fixing holes 11 are provided in the fixing part 1. The bent acromion fixing part 2 is arranged at one end of the fixing part 1, and a distal crimping part 3 is also arranged at the end of the fixing part 1, and the distal crimping part 3 is arranged at an upper part of one side of the acromion fixing part 2. A hook part 31 is provided at one end of the distal crimping part 3 away from the fixing part 1, and three hook parts 31 are radially provided at one end of the distal crimping part 3 away from the fixing part 1, and the three hook parts 31 form a three-claw structure.

[0028] Since nickel-titanium alloy is an existing shape memory alloy, when used, the shape memory alloy can automatically restore its own plastic deformation to its original shape at a certain temperature. It has good plasticity. The specific steps are:

[0029] a. After fracture reduction and temporary fixation, the device is pre-bent according to the distal shape of the clavicle;

[0030] b. Place the metal plate in an ice-water mixture for secondary bending to facilitate the placement of internal fixation devices;

[0031] c. Select the distal nail hole for drilling, depth measurement, and insertion of corresponding screws to fix the steel plate to the bone;

[0032] d. Use warm water at about 40 degrees to rinse the memory alloy plate to restore it to the shape of the first pre-bending. The memory alloy plate and the distal end of the clavicle can be basically attached and wrapped. During this process, instruments can also be used to make it more attached. Embodiment 2:

[0033] Combination Figures 5 to 6 As shown, a clavicle distal bone fixing device made of memory alloy is different from the first embodiment in that the distal crimping portion 3 is a plate-like structure, and at least two groups of nail holes 32 are provided at one end of the distal crimping portion 3 away from the fixing portion 1.

[0034] When in use, the plate-like structure achieves preliminary fixation of the distal bone block through the inherent properties of the memory alloy, and further fixation of the bone block can be achieved by inserting two locking screws into the two groups of nail holes 32, thereby further ensuring reliability and safety.

[0035] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation on the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the claims attached to the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the attached claims, or within the equivalent forms of such scope and boundaries.

Claims

1. A clavicle distal fixation device made of memory alloy, comprising a fixing portion (1), one end of the fixing portion (1) being provided with a bent acromion fixing portion (2), characterized in that: A distal crimping portion (3) is provided at the end of the fixing portion (1), and the distal crimping portion (3) is arranged on an upper part of one side of the acromion fixing portion (2).

2. The clavicle distal bone fixation device made of memory alloy according to claim 1, characterized in that: A hook portion (31) is provided at one end of the distal crimping portion (3) away from the fixing portion (1).

3. The clavicle distal bone fixation device made of memory alloy according to claim 2, characterized in that: The distal crimping portion (3) is provided with three curved hook portions (31) at one end away from the fixing portion (1) in a radial pattern, and the three curved hook portions (31) form a three-claw structure.

4. The clavicle distal bone fixation device made of memory alloy according to claim 1, characterized in that: The distal crimping portion (3) is a plate-shaped structure, and at least two groups of nail holes (32) are provided at one end of the distal crimping portion (3) away from the fixing portion (1).

5. The clavicle distal bone fixation device made of memory alloy according to claim 1, characterized in that: The fixing portion (1) is provided with a plurality of groups of fixing holes (11).

6. A clavicle distal bone fixation device made of memory alloy according to any one of claims 1 to 5, characterized in that: The entirety of the distal clavicle osteosynthesis device is made of memory alloy.

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