Modularized carbon fiber composite material bone fracture plate system for distal humerus

Abstract

The utility model discloses a humerus far-end modularized carbon fiber composite material bone fracture plate system which comprises an outer side basic bone fracture plate and / or an inner side basic bone fracture plate, and the tail end of the outer side basic bone fracture plate and the tail end of the inner side basic bone fracture plate are detachably connected with bone fracture plate extension modules in the length direction. The head end of the outer side basic bone fracture plate is detachably connected with an outer side wing module extending towards the side portion, the outer side basic bone fracture plate, the inner side basic bone fracture plate and the bone fracture plate extension module are all made of carbon fiber composite materials, and a plurality of screw holes are formed in the outer side basic bone fracture plate, the inner side basic bone fracture plate and the bone fracture plate extension module in the length direction of the outer side basic bone fracture plate, the inner side basic bone fracture plate and the bone fracture plate extension module. The outer side basic bone fracture plate and the inner side basic bone fracture plate are arranged as basic plates and are flexibly matched with the bone fracture plate extension module and the outer side wing module for use, and a proper use mode can be selected according to different elbow joint distal humerus fracture degrees to face different clinical application scenes.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field, concretely is a humerus distal end modularization carbon fiber composite material bone fracture plate system. BACKGROUND

[0002] Humerus distal end fracture is the fracture that occurs in the section from the upper humeral condyle to the distal articular surface, and the most common cause of humerus distal end fracture is high-energy injury, nearly 43% of the injuries are caused by traffic accidents, and are often combined with skin, soft tissue, blood vessels, nerves (especially median nerve), muscles, ligaments or systemic injuries. Due to the involvement of articular surface, instability of fracture end and associated blood vessel and nerve injury, especially associated with severe intra-elbow fracture, the fracture end is not easy to be fixed firmly, and is prone to Wolkmann ischemic contracture in the early postoperative period, and is prone to nonunion, malunion of elbow joint, elbow joint stiffness, ossifying myositis and other complications in the late period, which is a difficult point in orthopedic treatment.

[0003] At present, surgical treatment is the main treatment method for humerus distal end fracture, among which single steel plate has reliable effect on simple fracture, but has certain requirements for bone quality, and is single-plane fixed, easy to loosen and rotate, and prone to displacement of fracture surface; double steel plate fixation helps to reconstruct and maintain the stability of humerus distal end double column, and has definite effect in the treatment of comminuted humerus distal end fracture, but how to place it is not yet unified. In addition, due to the inherent stress shielding effect of metal bone fracture plate, the use of steel plate fixation is easy to cause delayed union, nonunion, severe osteoporosis of fixed segment, and re-fracture after removal of internal fixation and other complications after treatment; the corrosion and dissolution of metal ions in steel plate internal fixation have cytotoxicity; the steel plate metal artifact is not conducive to the positioning operation of the surgeon during operation and the follow-up diagnosis after operation; the existing metal bone fracture plate structure is fixed, and cannot be used when the fracture line is long or comminuted, so that the type of bone fracture plate is required more, increasing the production cost.

[0004] Carbon fiber composite material is a kind of carbon-based material with carbon fiber and its fabric as reinforcing body, which has the characteristics of light weight, strong designability, no artifact and the like compared with other materials, and the biocompatibility, chemical stability and mechanical properties are improved to a certain extent. Polyether ether ketone (PEEK) is a kind of fully aromatic semi-crystalline polymer, which has a variety of excellent properties: oxidation resistance, toughness and rigidity, high strength, creep resistance, good fatigue resistance and easy molding. The carbon fiber reinforced PEEK (CF-PEEK) based composite material can overcome stress shielding and meet the mechanical requirements of fracture repair when applied in orthopedics, in addition, the material also has the characteristics of X-ray transparency, which does not form metal artifact in the process of clinical operation and postoperative follow-up.

[0005] Therefore, it is appropriate to use CF-PEEK as the main material of the bone plate. For example, patent CN106620895B discloses a carbon fiber and polyether ether ketone composite bone plate and a preparation method thereof; patent CN110585491B discloses a carbon fiber composite bone plate composed of a continuous carbon fiber woven fabric composite layer and a carbon fiber non-woven fabric composite layer; patent CN214907945U discloses a distal humerus dorsal bone plate to solve the problem of poor universality of existing bone plates; and patent CN211484854U discloses a distal humerus external posterior anatomical fixation plate, which includes a head portion and a side wing that can be broken on one side of the head portion, to solve the problem that the distal humerus fixation plate in the prior art can only be applied to one part. However, in actual application, patent CN106620895B and patent CN110585491B disclose a carbon fiber composite bone plate and a preparation method thereof, but the carbon fiber composite material is made by a thermoplastic process. Once the bone plate is formed, it cannot be easily bent in actual clinical application, and it cannot accurately match the actual clinical needs of different patients. Therefore, the current application and promotion of carbon fiber composite materials still have great limitations. Patents CN214907945U and CN211484854U disclose the design of a modular assembled bone plate to solve the problem that existing bone plates can only be used for specific patients. However, there is no modular bone plate used for internal fixation of elbow joint fractures, especially for internal fixation of distal humerus fractures. Practical new type content

[0006] The utility model provides a kind of distal humerus modularization carbon fiber composite material bone plate system, can solve the stress shielding, cytotoxicity, image interference of distal humerus fracture bone plate in actual clinical application, and the problem of single function of bone plate, relatively limited application range, overhigh production cost.

[0007] To achieve the above object, the utility model provides the following technical scheme: a kind of distal humerus modularization carbon fiber composite material bone plate system, including outer side base bone plate and / or inner side base bone plate, the tail end of the outer side base bone plate and inner side base bone plate is detachably connected with bone plate extension module along length direction, the head end of the outer side base bone plate is detachably connected with the outer side wing module extending to side portion, the outer side base bone plate, inner side base bone plate and bone plate extension module are made of carbon fiber composite material and multiple screw holes are set on it along its length direction, by setting outer side base bone plate and inner side base bone plate as base plate, with bone plate extension module and outer side wing module are flexibly cooperated and used, can select appropriate use mode according to different elbow joint distal humerus fracture degree, face different clinical application scene.

[0008] As preferred, the outer side basic bone plate, the inner side basic bone plate and the bone plate extension module are further provided with a plurality of transverse waist-shaped holes along the length direction, which can not only save materials, but also make the bone plate and each module stronger and lighter.

[0009] As preferred, the carbon fiber composite material adopts carbon fiber reinforced polyether ether ketone, has a plurality of excellent performances, and has the characteristics of X-ray transmission, so that no metal artifact is formed in the clinical operation and postoperative follow-up process.

[0010] As preferred, the head end of the outer side basic bone plate is curved, so that the outer side wing module can be more close to the actual structure of the distal humerus and be conveniently installed and fixed.

[0011] As preferred, the outer side wing module is made of metal material and comprises a mounting connecting part and a bone surface connecting part, the mounting connecting part and the bone surface connecting part are arranged at an angle, the mounting connecting part is provided with a mounting hole, and the bone surface connecting part is provided with a screw hole, so that the outer side wing module can be conveniently bent, matched with the bone surface and stably and firmly connected during operation.

[0012] As preferred, the outer side wing module and the head end of the outer side basic bone plate form a T-shaped structure, which is beneficial to fixing the distal humerus by the outer side wing module.

[0013] As preferred, the bone plate extension module comprises a base plate and a plug-in connecting part arranged at one end of the base plate, the plug-in connecting part is provided with a plug-in slot for inserting the tail end of the outer side basic bone plate or the inner side basic bone plate along the length direction of the plug-in connecting part, and the plug-in connecting part is further provided with a positioning connecting hole corresponding to the screw hole, so that the tail end of the outer side basic bone plate or the inner side basic bone plate can be inserted into the plug-in slot and then positioned and connected through the positioning connecting hole, which is very convenient.

[0014] As preferred, the outer side basic bone plate, the inner side basic bone plate, the bone plate extension module and the outer side wing module are all provided with a positioning Kirschner wire hole, which is convenient for temporary fixation during operation.

[0015] As preferred, the number of screw holes on the bone plate extension module is 4 or 6 or 8, so that bone plate extension modules with different lengths can be selected according to different numbers of screw holes, and the use is flexible.

[0016] Compared with the prior art, the utility model has the beneficial effects that:

[0017] By setting the lateral basic bone plate and the medial basic bone plate as basic plates, the lateral basic bone plate and the medial basic bone plate can be used alone or flexibly used in cooperation with the bone plate extension module and the lateral wing module, the appropriate use mode can be selected according to different elbow joint humeral distal fracture degrees, different clinical application scenes are faced, the universality of the elbow joint humeral distal bone plate system is improved, and the production cost is reduced; meanwhile, the lateral basic bone plate, the medial basic bone plate and the bone plate extension module are all made of carbon fiber composite materials, so that the problems of stress shielding, cytotoxicity and image interference existing in actual clinical application are reduced. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a first perspective stereogram of the lateral basic bone plate of the utility model;

[0019] Figure 2 It is a second perspective stereogram of the lateral basic bone plate of the utility model;

[0020] Figure 3 It is a stereogram of the lateral wing module of the utility model;

[0021] Figure 4 It is a schematic diagram of cooperation of the lateral basic bone plate and the lateral wing module of the utility model;

[0022] Figure 5 It is a schematic diagram of cooperation of the lateral basic bone plate, the lateral wing module and the bone plate extension module of the utility model;

[0023] Figure 6 It is a first perspective stereogram of the medial basic bone plate of the utility model;

[0024] Figure 7 It is a second perspective stereogram of the medial basic bone plate of the utility model;

[0025] Figure 8 It is a first perspective schematic diagram of cooperation of the medial basic bone plate and the bone plate extension module of the utility model;

[0026] Figure 9 It is a second perspective schematic diagram of cooperation of the medial basic bone plate and the bone plate extension module of the utility model;

[0027] Figure 10 It is a first structure schematic diagram of the bone plate extension module of the utility model;

[0028] Figure 11 It is a second structure schematic diagram of the bone plate extension module of the utility model;

[0029] Figure 12The third structure diagram of the bone plate extension module of the utility model.

[0030] Reference signs:

[0031] 1, outer side basic bone plate, 11, head end, 12, transverse waist-shaped hole, 13, positioning Kirschner needle hole, 14, screw hole, 15, tail end, 2, outer side wing module, 21, bone surface connecting part, 22, mounting connecting part, 23, mounting hole, 3, bone plate extension module, 31, base plate, 32, plug-in connecting part, 33, plug-in slot, 34, positioning connecting hole, 4, inner side basic bone plate. DETAILED DESCRIPTION

[0032] The technical scheme in the utility model embodiment will be clearly and completely described below with reference to the drawings in the utility model embodiments.

[0033] The utility model discloses solve the stress shielding, cell toxicity, image interference, and the single function of bone plate, the relatively limited application range, the problem of overhigh production cost of humeral distal fracture bone plate in actual clinical application. Figures 1-12 As shown in the figure, the following technical scheme is provided: a humeral distal modular carbon fiber composite bone plate system, comprising an outer side basic bone plate 1 and / or an inner side basic bone plate 4, the tail end 15 of the outer side basic bone plate 1 and the inner side basic bone plate 4 is detachably connected with a bone plate extension module 3 along the length direction, the head end 11 of the outer side basic bone plate 1 is detachably connected with an outer side wing module 2 extending to the side, the outer side basic bone plate 1, the inner side basic bone plate 4 and the bone plate extension module 3 are all made of carbon fiber composite material and a plurality of screw holes 14 are arranged thereon along the length direction, by arranging the outer side basic bone plate 1 and the inner side basic bone plate 4 as the basic plate, the bone plate extension module 3 and the outer side wing module 2 are flexibly used, the appropriate use mode can be selected according to different elbow joint humeral distal fracture degree, and different clinical application scenarios are faced.

[0034] Specifically, the outer side basic bone plate 1 and the inner side basic bone plate 4 can be used alone or simultaneously, and the specific shape of the outer side basic bone plate 1 and the inner side basic bone plate 4 is the anatomical design of the elbow joint humeral distal end, as shown in the figure, the outer side basic bone plate 1 is a relatively straight strip, and as shown in the figure, the inner side basic bone plate 4 is S-shaped, which is used for realizing anatomical fixation and avoiding nerve damage. Figures 1-2 Figures 6-7 In addition, the outer side basic bone plate 1 and the inner side basic bone plate 4 are respectively provided with left and right patterns, which are the same in structure and different in structure orientation, and marks can be arranged thereon during use, so that they are convenient to distinguish.

[0035] ​The head end 11 of the outer side basic bone plate 1 is curved, which can be more close to the actual structure of the distal humerus, and facilitate the installation and fixation of the outer side wing module 2.

[0036] The bone plate extension module 3 can lengthen the outer side basic bone plate 1 and the inner side basic bone plate 4, and provide strong fixation for the proximal humerus segment fracture extending to the diaphysis region. The bone plate extension module 3, the outer side basic bone plate 1 and the inner side basic bone plate 4 are fixed to the bone surface by the screw holes 14 and corresponding screws.

[0037] In the embodiment, as shown in the figure, Figures 1-12 The outer side basic bone plate 1, the inner side basic bone plate 4 and the bone plate extension module 3 are also provided with a plurality of transverse waist-shaped holes 12 along the length direction. The transverse waist-shaped holes 12 can not only save materials, but also make the strength of the bone plate and each module greater and more lightweight. The transverse waist-shaped holes 12 can be arranged between adjacent screw holes 14, or can be arranged continuously, and can be arranged flexibly according to the position of the screw hole 14.

[0038] In the embodiment, the carbon fiber composite material is carbon fiber reinforced polyether ether ketone, which has a plurality of excellent properties and X-ray transparent characteristics, and does not form metal artifacts during clinical operation and postoperative follow-up. The carbon fiber reinforced polyether ether ketone is CF-PEEK, which is a mature carbon fiber composite material.

[0039] In the embodiment, as a specific structure of the outer side wing module 2, as shown in the figure, Figure 3 The outer side wing module 2 is made of metal material and includes a mounting connecting part 22 and a bone surface connecting part 21. The mounting connecting part 22 and the bone surface connecting part 21 are arranged at an angle. The mounting connecting part 22 is provided with a mounting hole 23, and the bone surface connecting part 21 is provided with a screw hole 14. The outer side wing module 2 is convenient to bend during operation, and is stable and firm in connection. The bone surface connecting part 21 can be provided with a plurality of screw holes 14 to improve the connection strength. The outer side wing module 2 and the head end 11 of the outer side basic bone plate 1 form a T-shaped structure, which is beneficial to fix the distal humerus by the outer side wing module 2.

[0040] In the embodiment, as a specific structure of the bone plate extension module 3, as shown in the figure, Figures 10-12As shown, the bone plate extension module 3 comprises a base plate 31 and a plug-in connection part 32 arranged at one end of the base plate 31, the plug-in connection part 32 is provided with a plug-in slot 33 for inserting the tail end 15 of the outer basic bone plate 1 or the inner basic bone plate 4 along the length direction of the plug-in connection part 32, and the plug-in connection part 32 is also provided with a positioning connection hole 34 corresponding to the screw hole 14, which is very convenient to use only by inserting the tail end 15 of the outer basic bone plate 1 or the inner basic bone plate 4 into the plug-in slot 33 and then positioning and connecting through the positioning connection hole 34. The number of screw holes 14 on the bone plate extension module 3 is 4 or 6 or 8, and bone plate extension modules 3 with different lengths can be selected according to the number of screw holes 14, and the use is flexible.

[0041] In addition, as shown in Figs. Figures 1-2 In addition, as shown in Figs.

[0042] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications will also change accordingly.

[0043] In addition, the description of "first level", "second level" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first level" and "second level" can be explicitly or implicitly included at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0044] In the present application, unless otherwise specifically defined and limited, the terms "connection", "fixing" and the like should be understood in a broad sense, for example, "fixing" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0045] In addition, the technical solutions of various embodiments of the utility model can be combined with each other, but must be based on that a person having ordinary skill in the art can realize, when the combination of technical solutions appears mutual contradiction or cannot be realized, it should be considered that the combination of such technical solutions does not exist, also not within the protection scope required by the utility model.

Claims

1. A modular carbon fiber composite material distal humeral plate system, characterized in that: The application relates to a lateral basic bone plate (1) and / or a medial basic bone plate (4), wherein the tail end (15) of the lateral basic bone plate (1) and the medial basic bone plate (4) is detachably connected with a bone plate extension module (3) along the length direction, the head end (11) of the lateral basic bone plate (1) is detachably connected with a lateral wing module (2) extending to the side, the lateral basic bone plate (1), the medial basic bone plate (4) and the bone plate extension module (3) are all made of carbon fiber composite material and are provided with a plurality of screw holes (14) along the length direction. The lateral basic bone plate (1), the medial basic bone plate (4) and the bone plate extension module (3) are further provided with a plurality of transverse waist-shaped holes (12) along the length direction.

2. The modular distal humerus carbon fiber composite bone plating system as described in claim 1, wherein: The carbon fiber composite material is carbon fiber reinforced polyether ether ketone.

3. The modular distal humerus carbon fiber composite bone plating system as claimed in claim 1, wherein: The head end (11) of the lateral basic bone plate (1) is curved.

4. The distal humerus modular carbon fiber composite bone plating system as claimed in claim 1, wherein: The lateral wing module (2) is made of metal material and comprises a mounting connecting part (22) and a bone surface connecting part (21), the mounting connecting part (22) and the bone surface connecting part (21) are arranged at an angle, the mounting connecting part (22) is provided with a mounting hole (23), and the bone surface connecting part (21) is provided with a screw hole (14).

5. The distal humerus modular carbon fiber composite bone plating system as claimed in claim 1, wherein: The lateral wing module (2) and the head end (11) of the lateral basic bone plate (1) form a T-shaped structure.

6. The modular distal humerus carbon fiber composite bone plating system as claimed in any one of claims 1 or 5, wherein: The bone plate extension module (3) comprises a base plate (31) and a plug-in connecting part (32) arranged at one end of the base plate (31), the plug-in connecting part (32) is provided with a plug-in groove (33) for inserting the tail end (15) of the lateral basic bone plate (1) or the medial basic bone plate (4) along the length direction, and the plug-in connecting part (32) is further provided with a positioning connecting hole (34) corresponding to the screw hole (14).

7. The distal humerus modular carbon fiber composite bone plating system as claimed in claim 1, wherein: The lateral basic bone plate (1), the medial basic bone plate (4), the bone plate extension module (3) and the lateral wing module (2) are all provided with a positioning Kirschner wire hole (13).

8. The distal humerus modular carbon fiber composite bone plating system as claimed in claim 1, wherein: The number of the screw holes (14) on the bone plate extension module (3) is 4 or 6 or 8.

9. The distal humerus modular carbon fiber composite bone plating system as claimed in claim 1, wherein: ​

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