An adjustable punch plate fixation clamp for long bone fractures

Abstract

This utility model relates to the field of orthopedic medical device technology, specifically to an adjustable drilled plate integrated fixation clamp for long bone fractures. It includes a first clamp body and a second clamp body, which are cross-hinged. The top of the first clamp body has a first clamping part, and the inner surface of the first clamping part has several short pins. The top of the second clamp body has a second clamping part, which includes a fixing plate and a clamping block. The clamping block is slidably connected to the inner side of the fixing plate, and the fixing plate has several through holes. This utility model not only provides stable clamping but also features fracture reduction and fixation, adaptive clamping of multiple types of plates, and drilled screw implantation.

Description

Technical Field

[0001] This utility model relates to the field of orthopedic medical device technology, specifically to an adjustable punched steel plate integrated fixation clamp for long bone fractures. Background Technology

[0002] Current fracture fixation clamps are limited in function, only capable of holding bone fragments, and cannot be adapted to different sizes of plates or direct drilling operations during surgery. In clinical practice, it is often necessary to use additional plate holders, drilling machines, and screw guns, resulting in frequent instrument switching, prolonged operation time, and a high risk of reduction displacement.

[0003] Although some integrated instruments attempt to combine clamping and drilling functions, they have shortcomings such as poor versatility of clamping mechanisms that are only compatible with specific steel plates, low drilling positioning accuracy, lack of linkage control with clamping status, manual operation required for screw implantation, and insufficient stability. They also do not provide a good solution for cases where long bone fractures require more stable fixation with steel plates. Utility Model Content

[0004] To address the aforementioned issues, this utility model provides an adjustable punching plate integrated fixation clamp for long bone fractures that offers stable clamping, fracture reduction and fixation, adaptive clamping of multiple types of steel plates, and drilling screw implantation functions.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows: an adjustable punched steel plate integrated fixation clamp for long bone fractures, comprising a first clamp body and a second clamp body, the first clamp body and the second clamp body being cross-hinged, the top of the first clamp body being provided with a first clamping part, the inner surface of the first clamping part being provided with a plurality of short needles, the top of the second clamp body being provided with a second clamping part, the second clamping part comprising a fixing plate and a clamping block, the clamping block being slidably connected to the inner side of the fixing plate, and the fixing plate being provided with a plurality of through holes.

[0006] As a further embodiment of this utility model: the first clamping part has an arc-shaped structure.

[0007] As a further embodiment of this utility model: the fixing plate includes a straight plate and an arc plate, the arc plate being fixedly connected to the bottom of the straight plate, forming an L-shaped structure with the straight plate.

[0008] As a further embodiment of this utility model: the clamping block includes a first positioning block and a second positioning block, a guide rail is provided on the outer side of the straight plate, a limiting block is provided at the end of the guide rail, the first positioning block is fixedly connected to the inner side of the straight plate, and the second positioning block is slidably connected to the guide rail.

[0009] As a further improvement of this utility model: a compression spring is sleeved on the guide rail, one end of the compression spring is connected to the straight plate, and the other end is connected to the second positioning block.

[0010] As a further improvement of this utility model, the fixing plate is also provided with a number of short pins, which play an auxiliary stabilizing role.

[0011] As a further improvement of this utility model, the inner sides of both the first clamping part and the second clamping part are provided with a number of strip-shaped protrusions at intervals.

[0012] As a further embodiment of this utility model: the bottom of the first clamp body is provided with a first hand-held part, and the bottom of the second clamp body is provided with a second hand-held part.

[0013] As a further embodiment of this utility model: a locking strip is fixedly connected to the second hand-held part, the locking strip has a groove, and a nut is screwed onto the first hand-held part, the nut being fitted into the groove.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. This utility model, by setting a telescopic clamping block, can be compatible with various steel plates, eliminating the need to replace special clamps, reducing the number of instruments, improving surgical efficiency, and better stabilizing steel plates and screws during surgery;

[0016] 2. This utility model has a through hole on the second clamping part, which serves as a drilling guide, eliminating the need for additional positioning tools, reducing the number of intraoperative fluoroscopy sessions, lowering the risk of radiation exposure, and ensuring the accuracy of screw implantation. This facilitates the insertion of screws or Kirschner wires during surgery to fix the fracture fragments.

[0017] 3. This utility model adopts the mechanical anchoring of short needles + friction locking of strip protrusions + rigid fixation of locking components to form a three-dimensional clamping system of "three points and one surface", which is more stable than the traditional single lateral clamping and is especially suitable for the reduction and fixation of comminuted fractures.

[0018] 4. This utility model integrates fracture reduction and fixation, adaptive clamping of multiple types of steel plates, and drilling screw implantation functions, and is suitable for internal fixation surgery of long bone fractures, especially for complex cases that require steel plate combined with screw fixation. Attached Figure Description

[0019] Figure 1 This is a structural diagram of the adjustable perforated steel plate integrated fixation clamp for long bone fractures of this utility model.

[0020] Figure 2 This is a schematic diagram of the outer side of the second clamping part of the adjustable perforated steel plate integrated fixation clamp for long bone fractures of this utility model.

[0021] Figure 3 This is a schematic diagram of the inner side of the second clamping part of the adjustable perforated steel plate fixation clamp for long bone fractures of this utility model.

[0022] In the diagram: 1. First clamp body; 2. Second clamp body; 3. First clamping part; 4. Short needle; 5. Second clamping part; 6. Fixing plate; 7. Clamping block; 8. Through hole; 9. Straight plate; 10. Arc plate; 11. First positioning block; 12. Second positioning block; 13. Guide rail; 14. Limiting block; 15. Compression spring; 16. Strip protrusion; 17. First hand grip; 18. Second hand grip; 19. Locking strip; 20. Groove; 21. Nut. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] refer to Figures 1 to 3 An adjustable punched steel plate fixation clamp for long bone fractures includes a first clamp body 1 and a second clamp body 2, which are cross-hinged. The top of the first clamp body 1 is provided with a first clamping part 3, and the inner surface of the first clamping part 3 is provided with a plurality of short needles 4. The top of the second clamp body 2 is provided with a second clamping part 5, which includes a fixing plate 6 and a clamping block 7. The clamping block 7 is slidably connected to the inner side of the fixing plate 6, and the fixing plate 6 is provided with a plurality of through holes 8.

[0025] The first clamping part 3 has an arc-shaped structure.

[0026] The fixing plate 6 includes a straight plate 9 and an arc plate 10. The arc plate 10 is fixedly connected to the bottom of the straight plate 9, forming an L-shaped structure with the straight plate 9.

[0027] The clamping block 7 includes a first positioning block 11 and a second positioning block 12. A guide rail 13 is provided on the outer side of the straight plate 9. A limiting block 14 is provided at the end of the guide rail 13. The first positioning block 11 is fixedly connected to the inner side of the straight plate 9, and the second positioning block 12 is slidably connected to the guide rail 13.

[0028] A compression spring 15 is fitted on the guide rail 13. One end of the compression spring 15 is connected to the straight plate 9, and the other end is connected to the second positioning block 12.

[0029] The fixing plate 6 is also equipped with several short pins 4, which play an auxiliary stabilizing role.

[0030] The inner sides of both the first clamping part 3 and the second clamping part 5 are provided with a number of strip-shaped protrusions 16 at intervals.

[0031] The bottom of the first clamp body 1 is provided with a first hand-held part 17, and the bottom of the second clamp body 2 is provided with a second hand-held part 18.

[0032] A locking strip 19 is also fixedly connected to the second hand part 18. The locking strip 19 has a groove 20. A nut 21 is screwed onto the first hand part 17. The nut 21 is fitted into the groove 20.

[0033] The working process of using this fixing clamp:

[0034] S1. Preoperative preparation: The fracture site is pre-treated. First, the fracture area is debrided, and surgical instruments are used to remove blood clots, bone fragments and other old foreign objects from the fracture ends to avoid infection or affecting fracture healing due to foreign object residue. Under the surgical microscope or direct vision, the articular surfaces of long bones are carefully pieced together to restore their anatomical structure as much as possible and provide a stable foundation for subsequent fixation.

[0035] S2. Fixing clamp adjustment: Perform initial adjustment of the fixing clamp by rotating the nut 21 on the first clamp body 1 to release the locking state of the clamp jaws. Manually open or close the first clamp body 1 and the second clamp body 2, and adjust the opening degree of the clamp jaws according to the diameter of the long bones (such as the difference in thickness of different long bones such as femur and humerus).

[0036] S3. Clamp and fix the long bone. Gently place the spliced ​​long bone between the first clamping part 3 and the second clamping part 5. The fixing plate 6 fits against the surface of the long bone to restrict its lateral displacement. The arc-shaped first clamping part 3 fits against the other side of the long bone. The short needles 4 on the inner surface of the first clamping part 3 are vertically inserted into the surface bone of the long bone (to a depth of about 23mm) to form a mechanical anchor and prevent longitudinal slippage. The short needles 4 on the inner surface of the second clamping part 5 simultaneously press lightly on the cortex of the opposite side of the long bone to assist in stabilization.

[0037] S4. Locking and friction enhancement: After confirming that the long bone is in the correct position, push the second hand part 18 closer to the first hand part 17 until the jaws tightly clamp the long bone, and rotate the nut 21 to lock it. At this time, the strip-shaped protrusions 16 on the inner side of the first clamping part 3 and the second clamping part 5 are embedded in the tiny depressions on the surface of the long bone. By increasing the roughness of the contact surface, greater friction is generated, which further resists the torsional force during the clamping process.

[0038] S5. Steel plate fixation and drilling: Select a steel plate (such as a straight plate or locking plate) according to the fracture type, and place the steel plate in the telescopic and adjustable clamping block 7.

[0039] Through the through hole 8 on the surface of the second clamping part 5, the long bone is drilled vertically with an orthopedic electric drill to prepare the nail channel. The position of the through hole 8 corresponds one-to-one with the screw hole of the steel plate (selective correspondence is possible) to ensure that the drilling direction is consistent with the fixing direction of the steel plate and avoid fixation failure caused by angular deviation.

[0040] Screws or Kirschner wires are implanted to securely connect the steel plate, long bone, and fixation clamp to the plate via threads or barbs. Locking screws can form a rigid lock with the steel plate and are suitable for patients with osteoporosis, while Kirschner wires are used for temporary fixation or small fracture fragments.

[0041] S6. Instrument removal and postoperative care: Release the lock and separate the clamp body. Rotate nut 20 to loosen it, so that the first clamp body 1 and the second clamp body 2 can be opened and closed freely. Gently open the first clamp body 1 and the second clamp body 2 to both sides. Use the smooth surface of the short needle 4 (barbless design) to separate it from the bone, avoiding the removal of bone fragments or damage to the surrounding soft tissue.

[0042] After removing the fixation clamps, check the position of the plate and the effectiveness of the screw fixation. If necessary, use a C-arm fluoroscopy machine to confirm the fracture reduction and the position of the internal fixation device. Complete the remaining surgical steps (such as rinsing the wound, suturing the muscles and skin, etc.). Postoperatively, have regular X-ray follow-ups to assess the fracture healing.

[0043] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An adjustable punched plate fixation clamp for long bone fractures, comprising a first clamp body (1) and a second clamp body (2), wherein the first clamp body (1) and the second clamp body (2) are cross-hinged, characterized in that: The first clamp body (1) has a first clamping part (3) at the top, and the inner surface of the first clamping part (3) is provided with a number of short needles (4). The second clamp body (2) has a second clamping part (5) at the top. The second clamping part (5) includes a fixing plate (6) and a clamping block (7). The clamping block (7) is slidably connected to the inner side of the fixing plate (6). The fixing plate (6) has a number of through holes (8).

2. The adjustable hole punch and plate integrated fixation forceps for long bone fracture according to claim 1, wherein: The first clamping part (3) has an arc-shaped structure.

3. The adjustable hole punch and plate integrated fixation forceps for long bone fracture according to claim 2, characterized in that: The fixing plate (6) includes a straight plate (9) and an arc plate (10). The arc plate (10) is fixedly connected to the bottom of the straight plate (9) and forms an L-shaped structure with the straight plate (9).

4. The adjustable hole punch and plate integrated fixation forceps for long bone fracture according to claim 3, characterized in that: The clamping block (7) includes a first positioning block (11) and a second positioning block (12). The outer side of the straight plate (9) is provided with a guide rail (13), and the end of the guide rail (13) is provided with a limiting block (14). The first positioning block (11) is fixedly connected to the inner side of the straight plate (9), and the second positioning block (12) is slidably connected to the guide rail (13).

5. The adjustable hole punch and plate integrated fixation forceps for long bone fracture according to claim 4, wherein: A compression spring (15) is fitted on the guide rail (13). One end of the compression spring (15) is connected to the straight plate (9), and the other end is connected to the second positioning block (12).

6. The adjustable hole punch and plate integrated fixation forceps for long bone fracture according to claim 5, wherein: The fixing plate (6) is also provided with several short pins (4) to assist in stabilization.

7. The adjustable hole punch and plate integrated fixation forceps for long bone fracture according to claim 6, wherein: The inner sides of the first clamping part (3) and the second clamping part (5) are provided with a number of strip-shaped protrusions (16) spaced apart.

8. The adjustable hole punch and plate integrated fixation forceps for long bone fracture according to claim 7, wherein: The first clamp body (1) has a first hand grip (17) at the bottom, and the second clamp body (2) has a second hand grip (18) at the bottom.

9. The adjustable hole punch and plate integrated fixation forceps for long bone fracture according to claim 8, wherein: A locking strip (19) is fixedly connected to the second hand-held part (18). A groove (20) is provided on the locking strip (19). A nut (21) is screwed onto the first hand-held part (17). The nut (21) is fitted into the groove (20).

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