Clavicular hooking bone plate
Patent Information
- Application Number
- CN202520138460.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-21
- Publication Date
- 2026-08-21
- Estimated Expiration
- 2035-01-21
AI Technical Summary
[0003]钩接骨板一般用于锁骨远端骨折或者肩锁关节脱位的手术治疗，现有技术中，钩接骨板在治疗锁骨远端骨折时，通过螺钉穿过钩接骨板上的锁定孔打入骨骼中，通过螺钉的螺帽压接在接骨板上进行固定，为了使骨骼方便愈合，部分钩接骨板在锁定孔上设置斜坡，当旋紧螺钉时，借助螺钉帽之坡度在钉孔远心端斜坡上滑移，以推动骨折段向中心滑动，达到轴向加压的目的，但是这种加压方式为强制加压，容易使骨骼在轴向上受力过大，一些细碎的骨骼凸起可能因此而崩裂
[0012] This invention replaces the ramp with an elastic part. When the screw is driven in, the elastic part applies a lateral thrust to the nut. This lateral thrust acts on the bone through the screw, causing axial pressure on the bone, which facilitates contact at the fracture site. The thrust of the elastic part has an upper limit, which will not generate a large axial thrust that would cause bone fragments to break apart. This makes the contact pressure at the fracture site moderate, which is conducive to healing.
Smart Images
Figure CN224655402U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of orthopedic bone plates, specifically relating to a clavicle hook bone plate. Background Technology
[0002] The clavicle hook plate has a transverse hook on one side, facing outwards, to hook onto the acromion; the medial plate has screw holes for fixing the lateral aspect of the clavicle. During surgery, the plate is placed above the distal end of the clavicle, with the hook tip inserted into the back of the acromion, forming a lever-like structure. This design utilizes the lever principle to push the plate downwards while simultaneously generating a continuous and stable upward pushing force from the distal hook, thereby fixing the dislocated acromioclavicular joint and providing a stable environment for ligament and joint capsule healing.
[0003] Hook plates are generally used for the surgical treatment of distal clavicle fractures or acromioclavicular joint dislocations. In current technology, when treating distal clavicle fractures, hook plates are inserted into the bone by screws through locking holes in the hook plate. The screw caps are then pressed against the plate for fixation. To facilitate bone healing, some hook plates have ramps on the locking holes. When the screw is tightened, the ramp on the distal end of the screw hole is used to slide the fractured bone segment towards the center, thus achieving axial compression. However, this compression method is forced compression, which can easily cause excessive axial force on the bone, and some small bone fragments may break as a result. Utility Model Content
[0004] The purpose of this invention is to provide a clavicle hook bone plate to solve the above-mentioned problems.
[0005] This utility model achieves the above objectives through the following technical solutions:
[0006] A clavicle hook bone plate includes a bone plate body, screws, a plurality of first locking holes formed on the bone plate body, and a hook plate disposed at one end of the bone plate body. The surface of the bone plate body is also provided with at least one second locking hole. The second locking hole includes a second through hole and a second pressure plate disposed inside the second through hole and having a notch, which is used to contact and press the bone plate body with the nut on the screw. An elastic part is provided on the surface of the second through hole corresponding to the notch of the second pressure plate.
[0007] As a further optimization of this utility model, the first locking hole includes a first through hole that penetrates the bone plate body and a first pressure plate disposed inside the first through hole. The first pressure plate has a continuous annular structure. The first locking hole is existing technology. By driving the screw into the bone, the nut is pressed on the first pressure plate to fix the bone plate body.
[0008] As a further optimization of this utility model, the second pressure platform is viewed from above as a U-shaped structure. This solution further sets the second pressure platform with a notch as a U-shaped structure to facilitate the setting of an elastic part at the notch.
[0009] As a further optimization of this utility model, the elastic part is a V-shaped elastic plate, one end of which is embedded inside the bone plate body, and the other end extends into the second through hole at an angle. The elastic part replaces the ramp to push the screw, forming a thrust along the bone axis. The thrust of the elastic part is relatively gentle, and it has the maximum thrust according to the degree of deformation, without forcibly pushing the screw to apply excessive axial force to the bone.
[0010] As a further optimization of this utility model, the lower surface of the nut is provided with an angle to facilitate contact and force application with the elastic part.
[0011] The beneficial effects of this utility model are as follows:
[0012] This invention replaces the ramp with an elastic part. When the screw is driven in, the elastic part applies a lateral thrust to the nut. This lateral thrust acts on the bone through the screw, causing axial pressure on the bone, which facilitates contact at the fracture site. The thrust of the elastic part has an upper limit, which will not generate a large axial thrust that would cause bone fragments to break apart. This makes the contact pressure at the fracture site moderate, which is conducive to healing. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0014] Figure 2 This is the utility model Figure 1 Enlarged view of the structure of part A in the middle.
[0015] Figure 3 This is the bone plate body of this utility model. Figure 2 BB view.
[0016] Figure 4 This is the utility model Figure 3 A schematic diagram of the screw-in process.
[0017] Figure 5 This is the utility model Figure 3 A schematic diagram after the screw is driven in.
[0018] In the figure: 1. Bone plate body; 2. Hook plate; 3. First locking hole; 31. First through hole; 32. First pressure plate; 4. Second locking hole; 41. Second through hole; 42. Second pressure plate; 43. Elastic part; 5. Screw; 51. Nut; 52. Nail body; 53. Angled. Detailed Implementation
[0019] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.
[0020] Example 1
[0021] like Figure 1-5 As shown, a clavicle hook bone plate includes a bone plate body 1, screws 5, a plurality of first locking holes 3 formed on the bone plate body 1, and a hook plate 2 disposed at one end of the bone plate body 1. The screws 5 include a nut 51 and a nail body 52. The nail body 52 is configured as a threaded conical structure. The surface of the bone plate body 1 is also provided with at least one second locking hole 4. The second locking hole 4 includes a second through hole 41 and a second pressure plate 42 disposed inside the second through hole 41 and having a notch. The pressure plate 42 is used to contact and press the bone plate body 1 with the nut 51 on the screws 5. The surface of the second through hole 41 is further recessed inward at the notch of the second pressure plate 42 to form a groove. An elastic part 43 is disposed in the groove and extends into the second through hole 41.
[0022] This solution replaces the ramp with an elastic part 43. When the screw 5 is driven in, the elastic part 43 applies a lateral thrust to the nut 51. This lateral thrust acts on the bone through the screw 5, causing axial pressure on the bone, which facilitates contact at the fracture site. The thrust of the elastic part 43 has an upper limit, which will not generate a large axial thrust that will cause the bone fragments to break apart, so that the contact pressure at the fracture site is moderate and conducive to healing.
[0023] The first locking hole 3 includes a first through hole 31 that is opened through the bone plate body 1 and a first pressing platform 32 disposed inside the first through hole 31. The first pressing platform 32 is a continuous annular structure. The first locking hole 3 is the prior art. By driving the screw 5 into the bone, the nut 51 is pressed on the first pressing platform 32 to fix the bone plate body 1.
[0024] Furthermore, the second pressure plate 42 is viewed from above as a U-shaped structure to facilitate the setting of an elastic part at the notch. When the screw 5 is driven in, the second pressure plate 42 of the U-shaped structure can contact the nut 51, and when the screw 5 is pushed axially toward the bone by the elastic part 43, the screw 5 can slide laterally along the second pressure plate 42 of the U-shaped structure. During the tightening process of the screw 5, the nut 51 can still be pressed against the second pressure plate 42.
[0025] The elastic part 43 is a V-shaped elastic plate. One end of it is embedded inside the bone plate body 1, and the other end extends into the second through hole 41 at an angle. The elastic part 43 pushes the screw 1 instead of the ramp, forming a thrust along the bone axis. The thrust of the elastic part 43 is relatively gentle. It has the maximum thrust according to the degree of deformation and will not force the screw 4 to apply excessive axial force to the bone.
[0026] The lower surface of the nut 51 is provided with an angled corner 53 to facilitate contact and force application with the elastic part 43.
[0027] The specific implementation method is as follows: when driving in screw 5, if... Figure 1 As shown, using the fracture site as the dividing line, screw 5 is first driven into the first locking hole 3 at the proximal end of the clavicle, i.e. Figure 1 The portion of the bone plate body 1 near the left side is driven in. After the screw 5 is driven into the second locking hole 4, the screw body 52 first enters the bone. Then, the bevel 53 of the nut 51 contacts the elastic part 43. Under the push of the elastic part 43, the thread 5 presses the distal clavicle (right segment) towards the fracture site, while the elastic part 43 deforms. When the pressure at the fracture site reaches a certain level, the elastic part 43 is fully compressed and hidden in the groove. Finally, the remaining first locking holes 3 at the distal end of the clavicle are all driven into the screw 5, thus completing the implantation of the bone plate body 1.
[0028] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.
Claims
1. A clavicle hook plate, comprising a plate body (1), screws (5), a plurality of first locking holes (3) formed on the plate body (1), and a hook plate (2) disposed at one end of the plate body (1), characterized in that: The surface of the bone plate body (1) is also provided with at least one second locking hole (4). The second locking hole (4) includes a second through hole (41) and a second pressure plate (42) with a notch located inside the second through hole (41). The pressure plate is used to contact and press the bone plate body (1) with the nut (51) on the screw (5). An elastic part (43) is provided on the surface of the second through hole (41) corresponding to the notch of the second pressure plate (42).
2. The clavicle hook bone plate according to claim 1, characterized in that: The first locking hole (3) includes a first through hole (31) that is opened through the bone plate body (1) and a first pressure plate (32) disposed inside the first through hole (31). The first pressure plate (32) is a continuous annular structure.
3. The clavicle hook bone plate according to claim 1, characterized in that: The second pressure platform (42) is viewed from above as a U-shaped structure.
4. The clavicle hook bone plate according to claim 1, characterized in that: The elastic part (43) is a V-shaped elastic plate, one end of which is embedded inside the bone plate body (1), and the other end extends into the second through hole (41) at an incline.
5. The clavicle hook bone plate according to claim 1, characterized in that: The lower circumferential surface of the nut (51) is provided with an angle (53).