External fixing device for olecranal fracture at near ulna end

Abstract

The utility model discloses an external fixing device for olecranal fracture at the near end of ulna. The external fixing device comprises a main fork plate, a hook body, a fixing nail, a bone threaded nail and a pressurizing rod, a long groove port of the main fork plate is fixedly connected with the hook body used for pressing the olecranon fracture position of the ulna, the fixing nail and the bone threaded nail are arranged in parallel, the root portions of the fixing nail and the bone threaded nail are fixedly connected to the ulna, and the screw rod ends of the upper portions of the fixing nail and the bone threaded nail are connected into the long groove in a penetrating mode and locked on the upper end face and the lower end face of the main fork plate through nuts. The pressurizing rod is in threaded connection with the interior of a threaded hole in one end of the main fork plate, the inner end of the pressurizing rod abuts against the outer wall of the bone threaded nail, and the outer end of the pressurizing rod is fixedly connected with a handle used for rotating. The external fixing device for the near-end olecranal fracture of the ulna is designed in a split and combined mode, extra tools are not needed, installation operation is facilitated, and a surgeon can control the pressurization force conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of orthopedic instruments, in particular to an external fixation device for proximal ulna olecranon fractures. Background Art

[0002] Proximal ulna and olecranon fractures are common elbow fractures, often causing elbow dysfunction. Because olecranon fractures are intra-articular, treatment requires accurate reduction, reliable fixation, and early elbow functional training to achieve effective results. Currently, there are numerous treatment options for proximal ulna and olecranon fractures, commonly classified into two main categories: external fixation and internal fixation. Traditional external fixation, such as plaster or splint immobilization, is a conservative approach. This method is only suitable for non-displaced olecranon fractures. Because the elbow is immobilized in a flexed position for a long time, it can easily lead to elbow stiffness and loss of function, and is no longer considered the preferred treatment for olecranon fractures. Internal fixation involves surgical open reduction and internal fixation. Common procedures include tension band fixation, plate fixation, and intramedullary nailing. Its advantages include secure fixation, the ability to initiate early elbow functional training, and excellent therapeutic outcomes, making it a commonly used treatment option. However, internal fixation also presents unresolved challenges. For example, internal fixation surgery requires incisions through the skin, muscles, fascia, and periosteum to expose the fracture site before the fixator can be installed. This soft tissue damage significantly increases the chance of wound infection, making it a common complication of internal fixation and a source of concern for practitioners. Furthermore, the surgery can lead to nonunion, myositis ossificans, a foreign body sensation within the tissue, and the need for a secondary surgery to remove the fixator.

[0003] To this end, medical practitioners are exploring new treatment methods. Among them, minimally invasive external fixation is a preferred method, gradually gaining recognition among orthopedic surgeons. Several existing external reduction and fixation devices for olecranon fractures, while generally sufficient for reduction, are often overly simple in structure and exhibit poor adjustability. Patent publication number CN103300914A discloses an external reduction and fixation device for olecranon fractures. The device comprises a strip-shaped hook plate and a bone screw. The strip-shaped hook plate has a curved hook section and a straight section. A long slot is provided in the strip-shaped hook plate. The upper half of the bone screw is tapped with a nut thread, while the lower half is tapped with a wood thread. The bone screw passes through the long slot in the straight section of the strip-shaped hook plate and is secured in the slot by a nut. A threaded through-hole is formed at the rear end of the straight section of the strip-shaped hook plate, communicating with the long slot. A pressure screw is inserted into the threaded through-hole. The head of the pressure screw presses against the bone screw fixed in the long slot, and the rear end of the pressure screw has a rotary handle. The in vitro reduction and fixation device for olecranon fractures in this patented technical solution has a very simple structure, is easy to produce and use, is low in cost, causes little damage to soft tissue during use, and provides accurate reduction.

[0004] However, this patented technical solution uses a pressure screw to adjust the pressing force of the strip hook plate on the broken olecranon. Controlling the amount of applied pressure is the technical key to ensuring a good fixation effect during surgery. If an additional wrench is required, it will not be conducive to the surgeon's feeling of the pressure strength, and additional tools will need to be found during the operation.

[0005] Therefore, it is necessary to develop an external fixation device for proximal ulnar olecranon fractures to address the above defects. Utility Model Content

[0006] The utility model aims to provide an external fixation device for proximal ulna olecranon fractures, which does not require the aid of additional tools and is convenient for surgeons to control the pressure intensity.

[0007] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0008] The utility model discloses an external fixation device for proximal ulnar olecranon fracture, comprising a main fork plate, a hook body, a fixing nail, a bone thread nail and a pressure rod; the long slot end of the main fork plate is fixedly connected to the hook body for pressing the ulnar olecranon fracture, the fixing nail and the bone thread nail are arranged in parallel and the roots are fixedly connected to the ulna, the upper screw ends of the fixing nail and the bone thread nail are passed through the long slot and locked on the upper and lower end surfaces of the main fork plate by nuts; the pressure rod is threadedly connected to the threaded hole at one end of the main fork plate, the inner end of the pressure rod pushes against the outer wall of the fixing nail, and the outer end of the pressure rod is fixedly connected to a handle for rotation.

[0009] Furthermore, the inner end of the pressure rod is rotatably connected to a top block, and an end of the top block facing the bone screw is provided with a top connection groove, and the width of the top block is consistent with the width of the long slot.

[0010] Furthermore, a light hole is provided on the back of the top block, a through retaining spring installation slot is provided on the side wall of the top block, the inner end of the pressure rod is a light rod section and is provided with a retaining spring slot, the light rod section is loosely fitted into the light hole and is axially locked by the retaining spring at the retaining spring installation slot position.

[0011] Furthermore, a bolt head is coaxially provided at the outer end of the pressure rod behind the handle. The bolt head is in the shape of a hexagonal prism and can be rotated using a hexagonal socket wrench.

[0012] Furthermore, the main fork plate and the hook body are detachably fixedly connected, and the root of the hook body is connected to the sliding groove of the outer wall of the main fork plate through a convex slider structure and is fastened using a first buckle.

[0013] Furthermore, the hook body is an angle hook type, and a hook tip is provided at the bottom of the hook body, and the hook tip is bent inward to form; there are multiple hook bodies with different sizes and specifications, which can be replaced and used as needed, and all the hook bodies are consistent with the installation size of the main fork plate.

[0014] Furthermore, the bottom of the nut locked on the top surface of the main fork plate is set to a conical shape, and the top surface of the main fork plate is provided with continuous conical grooves on both sides of the long groove.

[0015] Furthermore, it also includes a second buckle, which is clamped on the main fork plate and prevents the two fork arms from splitting and separating.

[0016] Furthermore, the second clip includes a C-shaped clip and a top screw. The C-shaped clip is connected to the main fork plate, the top screw is threadedly connected to the threaded hole on the side wing plate of the C-shaped clip, and the inner end of the top screw abuts against the outer wall of the main fork plate.

[0017] Furthermore, a top screw limiting groove is opened on the outer wall of the main fork plate along the length direction, and the inner end of the top screw abuts against the bottom surface of the top screw limiting groove.

[0018] Compared with the prior art, the beneficial technical effects of the present invention are:

[0019] The practical external fixation device for proximal ulna olecranon fracture has a straight rod-shaped handle directly welded to the outer end of the pressure rod, which is convenient for the surgeon to grasp, feel the pressure strength, and control the reduction force of the fracture site.

[0020] Furthermore, a pivotable push-up block at the inner end of the pressure rod prevents the inner end of the pressure rod from directly drilling and pushing against the outer wall of the bone screw. The connecting groove increases the pushing area, reduces contact pressure, and minimizes damage to the upper threads of the bone screw. A retaining spring, fitted within the retaining spring mounting notch, axially limits the bare rod section, enabling both pushing and retracting. The improved hook body, with its angled design, offers a compact structure, minimal space requirements, minimal soft tissue compression, and no obstruction to elbow extension movement after fixation. The hook tip, positioned at a near-vertical angle, compresses the fracture site, achieving precise reduction. The separate structure of the hook body and main fork plate facilitates installation and operation during fracture treatment and allows for separate deep disinfection of the hook body that contacts human tissue. Multiple interchangeable hooks of varying sizes reduce space requirements and accommodate patients of varying ages. The addition of a second buckle secures the two fork arms across the width of the main fork plate, preventing them from splitting outward under the pressure of the nut, further strengthening fracture fixation. By providing a top screw limiting groove along the length direction on the outer wall of the main fork plate, the inner end of the top screw abuts against the top screw limiting groove, which can prevent the second buckle from loosening and becoming ineffective after being skewed. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the accompanying drawings.

[0022] Figure 1 This is a schematic diagram of the three-dimensional structure of the external fixation device for proximal ulna olecranon fracture of the present invention;

[0023] Figure 2 This is a schematic diagram of the main structure of the external fixation device for proximal ulna olecranon fracture of the present invention;

[0024] Figure 3 This is a schematic diagram of the main cross-sectional structure of the external fixation device for proximal ulna olecranon fracture of the present invention;

[0025] Figure 4 This is a schematic diagram of the three-dimensional structure of the main fork plate in the utility model;

[0026] Figure 5 It is a schematic diagram of the three-dimensional structure of the top block in the utility model.

[0027] Explanation of the accompanying drawings: 1. Main fork plate; 101. Long groove; 102. Threaded hole; 103. Top screw limit groove; 104. Insertion guide groove; 105. Positioning pit; 2. Fixing nail; 3. Bone thread nail; 4. Hook body; 401. Hook tip; 5. First clip; 6. Pressure rod; 601. Handle; 602. Bolt head; 7. Top block; 701. Light hole; 702. Retaining spring mounting notch; 703. Top connection groove; 8. Second clip. DETAILED DESCRIPTION

[0028] The core of the utility model is to provide an external fixation device for proximal ulnar olecranon fractures. The fracture external fixation device is designed as a split and combined structure, which is easy to use and simple to install. It does not require the aid of additional tools, making it easy for the surgeon to control the pressure intensity.

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0031] With reference to the accompanying drawings, Figure 1 This is a schematic diagram of the three-dimensional structure of the external fixation device for proximal ulna olecranon fracture of the present invention; Figure 2 This is a schematic diagram of the main structure of the external fixation device for proximal ulna olecranon fracture of the present invention; Figure 3 This is a schematic diagram of the main cross-sectional structure of the external fixation device for proximal ulna olecranon fracture of the present invention; Figure 4 This is a schematic diagram of the three-dimensional structure of the main fork plate in the utility model; Figure 5 This is a schematic diagram of the three-dimensional structure of the top block in this utility model

[0032] In one embodiment, Figures 1 to 5 As shown, the present invention's external fixation device for proximal olecranon fractures comprises a main fork plate 1, a hook 4, a fixation pin 2, a bone screw 3, and a pressure rod 6. The main fork plate 1 is a long, straight plate with a slot 101. The slot 101 of the main fork plate 1 is fixedly connected to the hook 4, which is used to compress the fractured segment of the olecranon. The fixation pin 2 and the bone screw 3 are arranged parallel to each other, with their bases fixed to the ulna. The upper screw ends of the fixation pin 2 and the bone screw 3 pass through the slot 101 and are locked to the upper and lower end surfaces of the main fork plate 1 via nuts 9. The pressure rod 6 is threaded into a threaded hole 102 at one end of the main fork plate 1. The inner end of the pressure rod 6 presses against the outer wall of the bone screw 3. A handle 601 is fixedly attached to the outer end of the pressure rod 6 for rotation. The handle 601 is a straight rod shaped perpendicular to the pressure rod 6 and welded to the outer end. The handle 601 is convenient for single-handed grasping.

[0033] By directly welding a straight rod-shaped handle 601 on the outer end of the pressure rod 6, the surgeon can grasp it easily, feel the pressure strength, and control the reduction force of the fracture site.

[0034] In a specific embodiment of the present invention, Figure 1 、 Figure 3 and Figure 5 The inner end of the pressure rod 6 is rotatably connected to a top block 7, and one end of the top block 7 facing the bone screw 3 is provided with a top groove 703, which contacts the outer wall of the bone screw 3. The width of the top block 7 is consistent with the width of the long slot 101.

[0035] Specifically, a light hole 701 is provided on the back of the top block 7, and a through retaining spring mounting slot 702 is provided on the side wall of the top block 7. The inner end of the pressure rod 6 is a coaxially arranged light rod section and is provided with a retaining spring slot. The light rod section is loosely fitted into the light hole 701 and is axially locked by the retaining spring at the position of the retaining spring mounting slot 702.

[0036] By rotatably connecting the push block 7 at the inner end of the pressure rod 6, the inner end of the pressure rod 6 is prevented from directly drilling and pushing on the outer wall of the bone screw 3, and the top connection groove 703 increases the pushing area and reduces the contact pressure, thereby reducing the damage to the upper thread of the bone screw 3; the circlip is installed in the circlip installation groove 702 to axially limit the rod section, which can realize the pushing and pulling back actions.

[0037] In a specific embodiment of the present invention, Figures 1 to 3 As shown, the outer end of the pressure rod 6 is coaxially provided with a bolt head 602 behind the handle 601. The bolt head 602 is in the shape of a hexagonal prism and can be rotated using a hexagonal socket wrench. In this way, a special T-shaped socket wrench can be used for rotation. Of course, power tools can also be used for quick disassembly.

[0038] In a specific embodiment of the present invention, Figures 1 to 4 As shown, the main fork plate 1 and the hook body 4 are detachably fixedly connected, and the root of the hook body 4 is connected to the slide groove of the outer wall of the main fork plate 1 through a convex slider structure and fastened using a first buckle 5. Figure 4 As shown, the sliding groove here is specifically a plug-in guide groove 104. Specifically, the first buckle 5 includes a C-shaped buckle and a top screw. The C-shaped buckle is arranged on the outer end of the fork arm of the main fork plate 1, and the top screw is threadedly connected to the C-shaped buckle wing plate and the inner end simultaneously presses the fork arm and the plug-in end of the hook body 4.

[0039] Specifically, if Figures 1 to 3 As shown, the hook body 4 is an angle hook type, which is different from the arc-shaped hook body in the prior art. This angle hook type hook body takes up less space and has greater structural strength. The angle between the angle hook bevel and the horizontal main fork plate 1 is set to 60 to 70 degrees. The bottom of the hook body 4 is provided with a hook tip 401, which is bent inward to form a shape so that the hook tip 401 contacts the fracture site. The angle between the hook tip 401 and the angle hook bevel is 45 to 60 degrees. There are multiple hook bodies 4 with different sizes and specifications, which can be replaced as needed. All hook bodies 4 are installed to the same size as the main fork plate 1.

[0040] Specifically, the hook body 4 also has a double hook structure, and the two hooks are fixedly connected together by two crossbeams. The gap between the two hooks is convenient for inserting a Kirschner wire for fixation.

[0041] The improved hook body 4 is shaped like an angled hook, resulting in a compact structure, minimal space occupation, minimal soft tissue compression, and no obstruction to elbow extension. The hook tip 401, positioned at a near-vertical angle, compresses the fracture site, achieving precise reduction. The separate structure of the hook body 4 and the main fork plate 1 facilitates separate deep disinfection of the hook body 4 that comes into contact with human tissue. By providing multiple hook bodies 4 of varying sizes for interchangeable use, space usage is reduced and the requirements of patients of different ages can be met.

[0042] In a specific embodiment of the present invention, Figure 1 、 Figure 3 and Figure 4 As shown, the bottom of the nut 9 locked on the top surface of the main fork plate 1 is configured as a downwardly protruding conical shape. The top surface of the main fork plate 1 is provided with continuous conical grooves on both sides of the long groove 101. The bottom of the nut 9 is screwed tightly into the conical groove to prevent it from loosening.

[0043] Specifically, if Figures 1 to 3 As shown, the nut 9 can also be a butterfly nut, which can be tightened and removed without the help of tools.

[0044] In a specific embodiment of the present invention, Figures 1 to 3 As shown, the external fixation device for proximal olecranon fractures of the present invention further includes a second clip 8, which is mounted on the main fork plate 1 and prevents the two fork arms from splitting and separating. Two or more second clips 8 are mounted on the main fork plate 1 without interfering with the installation of the fixation screw 2 and the bone screw 3. The second clips 8 are arranged along the width of the main fork plate 1 to tighten the two fork arms in this direction.

[0045] Specifically, if Figures 1 to 4 As shown, the second clip 8 includes a C-shaped clip and a top screw. The C-shaped clip is connected to the main fork plate 1. The top screw is threadedly connected to the threaded hole on the side plate of the C-shaped clip. The inner end of the top screw abuts against the outer wall of the main fork plate 1.

[0046] Specifically, if Figure 1 、 Figure 2 and Figure 4 As shown, a top screw limiting groove 103 is opened on the outer wall of the main fork plate 1 along the length direction, and the inner end of the top screw abuts against the bottom surface of the top screw limiting groove 103.

[0047] By adding a second clip 8, the two fork arms can be tightened in the width direction of the main fork plate 1 to prevent the two fork arms from splitting outward and separating under the pressure of the nut 9; by providing a top screw limiting groove 103 along the length direction on the outer wall of the main fork plate 1, the inner end of the top screw abuts against the top screw limiting groove 103, which can prevent the second clip 8 from loosening and becoming ineffective after being skewed.

[0048] The following is a procedure for using the external fixation device for proximal ulnar olecranon fractures: A small incision is made in the skin on the dorsal side of the proximal ulna, and a bone screw 3 with a nut 9 is screwed in. The main fork plate 1 and hook body 4 are assembled using the first clip 5, and the long slot 101 is inserted into the screw of the bone screw 3 and placed on the nut 9, so that the two hook tips 401 of the hook plate contact the broken ulnar olecranon. The nut 9 on the top surface is installed and pre-tightened. This is the initial fixation position of the main fork plate 1. It should be noted that the conical heads of the two nuts 9 on the bone screw 3 face outward, that is, the flat ends of the nuts 9 contact the upper and lower surfaces of the main fork plate 1. After checking that the fracture reduction is correct, rotate the handle 601 at the end of the pressure rod 6 to apply pressure to fix the fracture. Grasp the handle 601 to feel the pressure and control the reduction force of the fracture site to the appropriate degree. Tighten the nuts 9 on the bone screw 3 to achieve initial fixation. Use a suitable bone drill bit to drill a hole through the middle of the long slot 101 and insert another fixation screw 2. The fixation screw 2 is located on the side of the bone screw 3 near the olecranon. Similarly, the fixation screw 2 is also equipped with two nuts 9. Note that the conical head of the nut 9 on the upper part of the fixation screw 2 should face the conical groove. Rotate the nut 9 on the upper part of the fixation screw 2 and press it into the corresponding conical groove to complete the auxiliary fixation treatment of the fixation screw 2.

[0049] In summary, the present practical external fixation device for proximal ulnar olecranon fractures, by directly welding a straight rod-shaped handle 601 on the outer end of the pressure rod 6, is convenient for the surgeon to grasp, feel the pressure, and control the reduction force of the fracture site. In addition, by rotatably connecting the top block 7 at the inner end of the pressure rod 6, the inner end of the pressure rod 6 is prevented from directly drilling and pushing on the outer wall of the bone screw 3, and the top groove 703 increases the pushing area and reduces the contact pressure, thereby reducing the damage to the upper thread of the bone screw 3; the circlip is installed in the circlip installation groove 702 to axially limit the rod section, so that the pushing and pulling actions can be achieved. By improving the shape of the hook body 4 to an angle hook type, the structure is compact, the space occupied is small, the pressure on the soft tissue is small, and the movement of the elbow joint extension position will not be hindered after fixation. By setting the hook tip 401, the fracture site is pressed at an approximately vertical angle, which can achieve precise reduction. By setting up a separate structure of the hook body 4 and the main fork plate 1, it is convenient to install, operate and perform a separate deep disinfection treatment on the hook body 4 that contacts human tissue during treatment. By setting up a plurality of hook bodies 4 of different sizes for replacement, the space occupied is reduced and the use requirements of patients of different ages can be met. By adding a second buckle 8, the two fork arms can be tightened in the width direction of the main fork plate 1 to prevent the two fork arms from splitting outward and separating under the pressure of the nut 9; by providing a top screw limit groove 103 along the length direction on the outer wall of the main fork plate 1, the inner end of the top screw abuts against the top screw limit groove 103, which can prevent the second buckle 8 from loosening and failing after being skewed.

[0050] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Reference can be made to the common and similar parts between the various embodiments. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the method description.

[0051] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements to the technical solutions of the present invention made by ordinary technicians in this field should fall within the scope of protection determined by the claims of the present invention.

Claims

1. An external fixation device for proximal ulnar olecranon fracture, characterized in that: The invention comprises a main fork plate (1), a hook body (4), a fixing nail (2), a bone screw nail (3) and a pressure rod (6); the long slot (101) end of the main fork plate (1) is fixedly connected to the hook body (4) for pressing the olecranon fracture, the fixing nail (2) and the bone screw nail (3) are arranged in parallel and the roots are fixedly connected to the ulna, the upper screw ends of the fixing nail (2) and the bone screw nail (3) are connected to the long slot (101) and locked on the upper and lower end surfaces of the main fork plate (1) by nuts (9); the pressure rod (6) is threadedly connected to the threaded hole (102) at one end of the main fork plate (1), the inner end of the pressure rod (6) pushes against the outer wall of the bone screw nail (3), and the outer end of the pressure rod (6) is fixedly connected to a handle (601) for rotation.

2. The external fixation device for proximal olecranon fracture of the ulna according to claim 1, characterized in that: The inner end of the pressure rod (6) is rotatably connected to a top block (7), and one end of the top block (7) facing the bone screw (3) is provided with a top connection groove (703), and the width of the top block (7) is consistent with the width of the long groove (101).

3. The external fixation device for proximal olecranon fracture of the ulna according to claim 2, characterized in that: The back of the top block (7) is provided with a light hole (701), the side wall of the top block (7) is provided with a through-going retaining spring mounting notch (702), the inner end of the pressure rod (6) is a light rod section and is provided with a retaining spring groove, the light rod section is inserted into the light hole (701) with clearance fit and is axially locked by the retaining spring at the position of the retaining spring mounting notch (702).

4. The external fixation device for proximal olecranon fracture of the ulna according to claim 1, characterized in that: The outer end of the pressure rod (6) is coaxially provided with a bolt head (602) behind the handle (601). The bolt head (602) is in the shape of a hexagonal prism and can be rotated using a hexagonal socket wrench.

5. The external fixation device for proximal olecranon fracture of the ulna according to claim 1, characterized in that: The main fork plate (1) and the hook body (4) are detachably fixedly connected, and the root of the hook body (4) is connected to the sliding groove of the outer wall of the main fork plate (1) through a convex slider structure and is fastened using a first buckle (5).

6. The external fixation device for proximal olecranon fracture of the ulna according to claim 5, characterized in that: The hook body (4) is an angle hook type, and a hook tip (401) is provided at the bottom of the hook body (4), and the hook tip (401) is bent inwardly; the number of the hook bodies (4) is multiple and the sizes are different, and they can be replaced and used as needed, and all the hook bodies (4) have the same installation size as the main fork plate (1).

7. The external fixation device for proximal olecranon fracture of the ulna according to claim 1, characterized in that: The bottom of the nut (9) locked on the top surface of the main fork plate (1) is set to a conical shape, and the top surface of the main fork plate (1) is provided with continuous conical surface grooves on both sides of the long groove (101).

8. The external fixation device for proximal olecranon fracture of the ulna according to claim 7, characterized in that: It also includes a second buckle (8), which is mounted on the main fork plate (1) and prevents the two fork arms from splitting and separating.

9. The external fixation device for proximal olecranon fracture of claim 8, characterized in that: The second clip (8) includes a C-shaped clip and a top screw, the C-shaped clip is connected to the main fork plate (1), the top screw is threadedly connected to the threaded hole on the side wing plate of the C-shaped clip, and the inner end of the top screw abuts against the outer wall of the main fork plate (1).

10. The external fixation device for proximal olecranon fracture of claim 9, characterized in that: A top screw limiting groove (103) is provided on the outer wall of the main fork plate (1) along the length direction, and the inner end of the top screw abuts against the bottom surface of the top screw limiting groove (103).

Images