Fracture reduction fixator
By designing a fracture reduction and fixation device, and utilizing the combination of a clamp-like structure and a locking component, the problem of fracture reduction and fixation was solved, achieving stable reduction and temporary fixation of the fracture ends, thus improving surgical efficiency and safety.
Patent Information
- Application Number
- CN202422641862.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-30
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2034-10-30
AI Technical Summary
Existing technologies cannot accurately locate fracture reduction and fixation devices, and cannot effectively solve fracture reduction and fixation, especially transverse fractures of long bones in the limbs. During surgery, it is difficult to maintain the reduction of the fracture ends, and the placement of plates is inconvenient, which affects healing.
A fracture reduction and fixation device was designed, including a left handle, a right handle, and a locking assembly. The device is connected by a hinge to form a clamp-like structure. The pins are inserted into the bone holes reserved at the fracture ends for fixation. Combined with the locking assembly and reduction spring plate, the device ensures the reduction of the fracture ends and provides temporary fixation, and can be adjusted to different angles.
It effectively maintains the reduction of fracture ends, avoids misalignment, improves surgical efficiency and safety, and facilitates subsequent plate fixation.
Smart Images
Figure CN223759871U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device technology, and in particular to a fracture reduction and fixation device. Background Technology
[0002] Many fractures require fixation with Kirschner wires or cannulated screws after reduction. Clinically, reduction forceps and bone holders are commonly used to clamp the fracture ends for reduction, and then the angle and direction of the Kirschner wires are repositioned for insertion. When tension band fixation is required, the surrounding tissues may be further stripped, causing considerable damage to the blood supply to the fracture ends. Furthermore, the angle and direction of insertion cannot be accurately positioned, and cross-fixation with Kirschner wires is also difficult, often requiring repeated punctures. This is especially true for transverse fractures of long bones in the limbs, where intraoperative reduction of the fracture ends is easy but difficult to maintain, and the placement of plates is also very inconvenient, which has an adverse effect on fracture healing.
[0003] Therefore, there is an urgent need to develop a fracture reduction and fixation device that can effectively reduce the fracture ends and provide temporary fixation, ensuring that the fracture ends do not shift during surgery, making subsequent plate placement and fixation more convenient, greatly improving the work efficiency of medical staff, and enhancing the safety of surgery. Utility Model Content
[0004] In view of this, the purpose of this utility model is to provide a fracture reduction and fixation device that can effectively reduce the fracture ends and provide temporary fixation, ensuring that the fracture ends will not be displaced during the operation, making the subsequent placement and fixation of the plate more convenient, greatly improving the work efficiency of medical staff, and improving the safety of the operation.
[0005] The fracture reduction and fixation device of this utility model includes a left handle, a right handle and a locking component. The left handle and the right handle are connected by a hinge to form a clamp-like structure. The clamp-like structure has a working part and a control part. The working part is provided with pins on the working surface of the left handle and the right handle respectively on the side that is close to the fracture end. After the fracture end is reduced, the pins are inserted into the bone holes reserved on the fracture end and fix the fracture end.
[0006] The locking component is located in the control unit and is used to lock the left and right handles and maintain the fixation of the fractured bone ends.
[0007] Furthermore, the needles are arranged perpendicularly to the working surface on the working part, and the needles extend outward from the working surface with the diameter of the needles gradually decreasing to the minimum diameter.
[0008] Furthermore, the locking assembly includes a locking lever and a connecting post disposed at the tail of the left handle. The locking lever is provided with a rotating part, which is used to rotatably connect with the connecting post.
[0009] Furthermore, the locking lever is provided with multiple ratchet teeth, and the tail of the right handle forms a locking tooth 9 that matches the ratchet teeth.
[0010] Furthermore, the connecting column is a cylindrical structure with a cuboid mounting groove in the middle along the diameter direction. The mounting groove is used to rotatably connect the rotating part of the locking rod.
[0011] Furthermore, a return spring plate I and a return spring plate II are provided between the gripping parts of the left and right handles. The bottom of the return spring plate I is fixed to the inside of the left handle, and the bottom of the return spring plate II is fixed to the inside of the right handle. The ends of the return spring plate I and the return spring plate II are engaged.
[0012] Furthermore, the reset spring plate I extends toward the connecting post on the left handle and forms an extension that passes through the mounting groove. When the locking lever is in the initial position, the extension is attached to the rotating part of the locking lever.
[0013] Furthermore, the extension applies a preload force to the locking lever, which causes the locking lever to tend to return to its initial position.
[0014] The beneficial effects of this utility model are as follows: The fracture reduction and fixation device of this utility model can effectively reduce the fracture ends and provide temporary fixation, ensuring that the fracture ends will not be displaced during the operation, making the subsequent placement and fixation of the steel plate more convenient, greatly improving the work efficiency of medical staff, and improving the safety of the operation. Attached Figure Description
[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments:
[0016] Figure 1 This is a schematic diagram of the structure of this utility model;
[0017] Figure 2 This is a side view of the present invention;
[0018] Figure 3 This is a schematic diagram of the fractured bone ends of this utility model;
[0019] Figure 4 This is a schematic diagram of the connecting column structure of this utility model;
[0020] Figure 5 for Figure 1 Enlarged view of part A in the middle. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0022] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0023] Figure 1 This is a schematic diagram of the structure of this utility model. Figure 2 This is a side view of the present invention. Figure 3 This is a schematic diagram of the fracture ends of this utility model. Figure 4 This is a schematic diagram of the connecting column structure of this utility model. Figure 5 for Figure 1 The enlarged view of part A is shown in the figure: The fracture reduction and fixation device of this embodiment includes a left handle 1, a right handle 2, and a locking assembly. The left handle 1 and the right handle 2 are hinged together to form a clamp-like structure. The clamp-like structure has a working part and a control part. The working part has corresponding pins on the working surface near the side of the left handle 1 and the right handle 2 that is in contact with the fracture end 11. After the fracture end 11 is reduced, the pins are inserted into the bone holes reserved on the fracture end 11 and fix the fracture end 11. The left handle 1 and the right handle 2 are hinged together to form a clamp-like structure, as shown in the figure. Figure 1 As shown, the left handle 1 and the right handle 2 can be hinged together by hinge screw 3, or other mechanical connection methods can be used, which will not be described in detail here.
[0024] Fracture ends 11 refer to the two broken ends of the bone after a fracture occurs. Fractures are usually caused by external force, overuse, or certain diseases that disrupt the integrity or continuity of the bone. Fracture ends 11 may be displaced, which can be angulated, lateral, shortened, separated, or rotated. Fracture healing requires first reducing and temporarily fixing the fracture ends 11. After stabilization, a plate 13 is installed to fix the fracture ends 11.
[0025] Bone holes typically refer to holes drilled into the bone at or near the fracture site. In this protocol, for example... Figure 3As shown, after the fracture ends 11 are well reduced, the plate 13 is placed on the bone surface of the fracture ends 11. At the same time, the bone holes are drilled at a distance of about 1.5 cm between the two ends of the fracture line 12. The drilling direction of the bone holes is perpendicular to the length direction of the fracture ends 11. The planes of the two bone holes are basically parallel to the bone surface, which can ensure that after the pins 16 are inserted into the bone holes, the bone surface can be located directly above the reduced fracture ends 11, making the placement of the plate 13 more convenient.
[0026] In this embodiment, the locking component is located in the control unit and is used to lock the left handle 1 and the right handle 2 and maintain the fixation of the fractured end 11. Since the left handle 1 and the right handle 2 are connected by a hinge to form a clamp-like structure, during use, when the pin on the working part is inserted into the bone hole reserved on the fractured end 11, if the left handle 1 and the right handle 2 are not locked, the left handle 1 and the right handle 2 may slip out, and the fractured end 11 cannot be fixed after repositioning. Therefore, it is necessary to set a locking component to lock the left handle 1 and the right handle 2 and maintain the fixation of the fractured end 11.
[0027] In this embodiment, the needle is set perpendicular to the working surface on the working part, and the needle extends outward from the working surface with the diameter of the needle 16 gradually decreasing to the minimum diameter. Since the bone hole is drilled at a distance of about 1.5 cm between the two ends of the fracture line 12, it is inevitable to adjust the opening angle of the left handle 1 and the right handle 2. The needle 16 is set perpendicular to the working surface on the working part. At any opening angle, the needle 16 can always remain perpendicular to the length direction of the fracture end 11, ensuring that the needle 16 can be inserted into the corresponding bone hole at any opening angle, thus making it more versatile.
[0028] In this embodiment, the locking assembly includes a locking lever 8 and a connecting post 10 disposed at the tail of the left handle 1. The locking lever 8 is provided with a rotating part 14, which is used to rotatably connect with the connecting post 10. The locking lever 8 is provided with a plurality of ratchet teeth 4, and the tail of the right handle 2 forms a locking tooth 9 that mates with the ratchet teeth 4. Figure 1 As shown, the ratchet 4 on the locking lever 8 engages with the locking tooth 9 formed at the tail of the right handle 2, which can lock the left handle 1 and the right handle 2 and maintain the fixation of the fractured end 11. The ratchet 4 is in the shape of an oblique tooth with the oblique side facing the right handle 2.
[0029] In this embodiment, the connecting column 10 is a cylindrical structure with a cuboid mounting groove 15 formed along the diameter in the middle of the cylinder. The mounting groove 15 is used to rotatably connect the rotating part 14 of the locking rod 8. Through bolt holes can be formed on the groove walls on both sides of the mounting groove 15. The bolt holes are used to rotatably connect the rotating part 14 of the locking rod 8 with bolts, so that the rotating part 14 of the locking rod 8 can rotate within the mounting groove 15.
[0030] In this embodiment, a return spring plate I5 and a return spring plate II6 are provided between the gripping portions of the left handle 1 and the right handle 2. The bottom of the return spring plate I5 is fixed to the inner side of the left handle 1, and the bottom of the return spring plate II6 is fixed to the inner side of the right handle 2. The ends of the return spring plate I5 and the return spring plate II6 are engaged. Figure 1 As shown, when adjusting the opening angle of the left handle 1 and the right handle 2 until the needle can be inserted into the bone hole, the left handle 1 and the right handle 2 are locked by the ratchet 4 on the locking rod 8 and the locking tooth 9 formed at the tail of the right handle 2. At this time, the return spring plate I5 deforms under the action of the left handle 1 and the return spring plate II6 deforms under the action of the right handle 2. When the external force that adjusted the opening angle of the left handle 1 and the right handle 2 is removed, the return spring plate I5 and the return spring plate II6 will tend to return to their original state, thereby generating an elastic force opposite to the direction of deformation. The elastic force generated by the return spring plate II6 will cause the locking tooth 9 formed at the tail of the right handle 2 to tend to press against the straight side of the ratchet 4. The elastic force generated by the return spring plate I5 is transmitted through the connecting post 10 on the left handle 1, so that the straight side of the ratchet 4 tends to press against the locking tooth 9 formed at the tail of the right handle 2, making the locking of the left handle 1 and the right handle 2 more stable.
[0031] In this embodiment, the reset spring plate I5 extends towards the connecting post 10 on the left handle 1 and forms an extension 7 that passes through the mounting groove 15. When the locking rod 8 is in the initial position, the extension 7 is in contact with the rotating part 14 of the locking rod 8; the extension 7 applies a preload force to the locking rod 8, and the preload force causes the locking rod 8 to tend to return to the initial position; Figure 5 As shown, when adjusting the opening angle of the left handle 1 and the right handle 2, the locking rod 8 needs to be lifted upwards so that the locking teeth 9 formed at the tail of the right handle 2 engage with the ratchet 4 on the locking rod 8. During the lifting of the locking rod 8, the rotating part 14 of the locking rod 8 acts on the extension 7 of the return spring plate I 5 and causes it to deform. When the external force of adjusting the locking rod 8 is removed, the extension 7 of the return spring plate I 5 tends to return to its original state. At the same time, since the extension 7 is attached to the rotating part 14 of the locking rod 8, the locking rod 8 tends to return to its initial position and the locking rod 8 rotates downwards around the rotating part 14. With the use of the return spring plate I 5 and the return spring plate II 6, the ratchet 4 and the locking teeth 9 can be locked more firmly, locking the left handle 1 and the right handle 2 and maintaining the fixation of the fractured bone ends 11.
[0032] In this embodiment, after the pin 16 is inserted into the bone hole reserved on the fracture end and the fracture end is fixed, the steel plate 13 can be placed on the bone surface and fixed. After the fixation is completed, the pin 16 can be withdrawn from the bone hole to complete the reduction and fixation of the fracture end.
[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. A fracture reduction fixator, characterized by: The device comprises a left handle, a right handle and a locking assembly, the left handle and the right handle are connected by a hinge to form a pincer structure, the pincer structure has a working part and a control part, the working part is provided with a needle foot on a working surface near the fracture end on the side of the left handle and the right handle respectively, the needle foot is inserted into a bone hole reserved on the fracture end after the fracture end is reset and the fracture end is fixed; The locking assembly is located in the control part, and is used for locking and maintaining the fixation of the fracture end.
2. The bone fracture reduction stabilizer of claim 1, wherein: The needle foot is arranged on the working part perpendicularly to the working surface, the needle foot extends outward from the working surface, and the diameter of the needle foot gradually decreases to a minimum diameter.
3. The bone fracture reduction stabilizer of claim 1, wherein: The locking assembly comprises a locking rod and a connecting column arranged at the tail of the left handle, the locking rod is provided with a rotating part, and the rotating part is used for rotating connection with the connecting column.
4. The fracture reduction stabilizer of claim 3, wherein: A plurality of ratchet teeth are arranged on the locking rod, and the tail of the right handle forms a tooth (9) matched with the ratchet teeth.
5. The bone fracture reduction stabilizer of claim 3, wherein: The connecting column is a cylindrical structure, a rectangular cuboid-shaped mounting groove is arranged in the middle of the cylinder along the diameter direction, and the mounting groove is used for rotating connection of the rotating part of the locking rod.
6. The bone fracture reduction stabilizer of claim 5, wherein: Reset spring sheets I and II are arranged between the holding parts of the left handle and the right handle, the bottom of the reset spring sheet I is fixed to the inner side of the left handle, the bottom of the reset spring sheet II is fixed to the inner side of the right handle, and the end parts of the reset spring sheet I and the reset spring sheet II are clamped.
7. The fracture reduction stabilizer of claim 6, wherein: The reset spring sheet I extends to the connecting column on the left handle and forms an extension part arranged in the mounting groove, when the locking rod is located at the initial position, the extension part is matched with the rotating part of the locking rod.
8. The fracture reduction stabilizer of claim 7, wherein: The extension part applies a pre-tightening force to the locking rod, and the pre-tightening force makes the locking rod have a tendency to return to the initial position.