A bone fracture repositioning device

Abstract

The utility model relates to medical instrument technical field especially relates to a broken bone reset ware, include: two slide bars, a plurality of semicircle plate slide rails and a plurality of lifting rods of slidingly setting in the slide bar on, wherein, the semicircle plate slide rail includes: main body, the two sliding parts of fixedly setting in the main body end, and the needle seat of slidingly setting in the outer surface of main body, wherein, two the sliding part is opened with first through -hole along the thickness direction of sliding part, and two sliding parts are slidingly set on two slide bars through first through -hole, the main body is opened with annular slide groove along the circumference end surface axis direction of main body, the inside fixedly set in arc gear rack of annular slide groove, arc gear rack is engaged with rolling gear, the utility model greatly improves the operation efficiency and reset accuracy, reduces the operation risk, and brings better therapeutic effect for the fracture patient.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a bone reduction device. Background Technology

[0002] Femoral shaft fractures are a common and serious clinical trauma, usually caused by high-energy injuries such as traffic accidents and falls. These fractures not only severely impact a patient's quality of life but can also lead to long-term functional impairment. Therefore, choosing the appropriate treatment method is crucial for restoring normal function.

[0003] Currently, there is a lack of a bone reduction device on the market that can fully meet clinical needs. Developing a new type of bone reduction device to improve the accuracy and stability of fracture reduction has become an urgent problem to be solved. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a bone reduction device.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] This utility model provides a bone reduction device, comprising: two slide rods, several semi-circular plate slide rails, and several lifting rods slidably disposed on the slide rods;

[0007] The semi-circular plate slide rail includes: a main body, two sliding parts fixedly disposed at the end of the main body, and a pin seat slidably sleeved on the outer surface of the main body;

[0008] The two sliding parts are provided with first through holes along the thickness direction of the sliding parts. The two sliding parts are slidably disposed on the two sliding rods through the first through holes. The main body is provided with an annular groove along the circumferential end face of the main body. An arc-shaped rack is fixedly disposed inside the annular groove. The arc-shaped rack meshes with a rolling gear.

[0009] The needle holder has a motor fixedly mounted on one side, the output shaft of the motor passing through the side wall of the needle holder and fixedly connected to the rolling gear, and a first clamping part fixedly mounted on one side of the needle holder, in which a fixed needle is clamped.

[0010] Furthermore, it also includes: a plurality of first threaded holes equidistantly opened along the axial direction of the slide bar, a second threaded hole opened on the sliding part, and a fixing screw passing through the first threaded hole and the second threaded hole;

[0011] The first threaded hole and the second threaded hole are arranged with their axes coincident and their thread specifications matched.

[0012] Furthermore, the first clamping part includes: two symmetrically arranged arc-shaped claws fixedly disposed on one side of the needle seat, two connecting ear plates respectively fixedly disposed at the ends of the two arc-shaped claws, and an adjusting screw passing through the two connecting ear plates;

[0013] The inner arc surface of the arc-shaped gripper is provided with anti-slip texture, and the adjusting screw passes through the two connecting ear plates in sequence to limit the size of the cavity formed by the two arc-shaped grippers, thereby relatively fixing the fixing pin and the first clamping part.

[0014] Furthermore, the fixing screw is an internal hexagon screw, and the head end face of the internal hexagon screw is provided with anti-slip texture.

[0015] Furthermore, the motor is a servo motor.

[0016] Furthermore, the outer surface of the main body is provided with scale markings.

[0017] Furthermore, one side of the slide rod is provided with a "V"-shaped guide groove extending along the axial direction, and the side of the sliding part that is close to the slide rod is fixedly provided with a guide protrusion that cooperates with the "V"-shaped guide groove.

[0018] The present invention adopts the above technical solution and has the following technical effects compared with the prior art:

[0019] In terms of structural design, the "V"-shaped guide groove of the slide rod cooperates with the guide protrusion of the sliding part to ensure smooth sliding and precise positioning of the semi-circular plate slide rail. The design of threaded holes and fixing screws securely locks the slide rail position. The annular groove of the semi-circular plate slide rail is embedded with an arc-shaped rack, which, combined with a servo motor-driven rolling gear, can precisely control the movement of the needle holder along the circumferential direction, accurately correcting bone fragment rotation and displacement. Regarding operational convenience, the scale markings on the outer surface of the main body provide the surgeon with real-time position reference, reducing operational blindness. The anti-slip texture on the inner arc surface of the arc-shaped gripper and the adjusting screw firmly clamp the fixing needle, ensuring stability during the reduction process, greatly improving surgical efficiency and reduction accuracy, reducing surgical risks, and bringing better treatment results to fracture patients. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the axial side structure of this utility model;

[0021] Figure 2 This is a front view structural diagram of the present invention;

[0022] Figure 3 This is a side view of the structure of this utility model.

[0023] The reference numerals in the drawings of this utility model are as follows:

[0024] 1. Slide rod; 2. Semicircular plate slide rail; 4. Lifting rod; 21. Main body; 22. Sliding part; 23. Pin seat; 211. Annular slide groove; 212. Arc rack; 24. Motor; 231. First clamping part; 5. Fixing pin; 6. Fixing screw; 232. Arc gripper; 233. Connecting ear plate. Detailed Implementation

[0025] The specific embodiments of this utility model will be described in detail below.

[0026] Unless otherwise defined, the technical or scientific terms used in the claims and description shall have the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.

[0027] The word "comprising" or similar terms used in this utility model patent application specification and claims mean that the objects preceding "comprising" include the objects listed after "comprising" or their equivalents, and do not exclude other objects.

[0028] The numerical values ​​mentioned in this invention include all values ​​increasing one unit at a time from low to high, assuming that there is at least a two-unit interval between any lower and higher value. For example, if a component quantity or a physical quantity is said to be better from 1 to 100, 10 to 90, and 20 to 80, it means that values ​​such as 5 to 95, 14 to 76, 23 to 67, 32 to 58, and 41 to 49 are clearly listed in this specification; for values ​​less than 1, 0.0001, 0.001, 0.01, or 0.1 are considered suitable units. The foregoing examples are for illustrative purposes only; in practice, all combinations of values ​​between the lowest and highest listed values ​​are considered to be clearly listed in this specification in a similar manner.

[0029] Example

[0030] This embodiment provides a bone reduction device, including: two slide rods 1, several semi-circular slide rails 2, and several lifting rods 4 slidably disposed on the slide rods 1;

[0031] The semi-circular slide rail 2 includes: a main body 21, two sliding parts 22 fixedly disposed at the end of the main body 21, and a pin seat 23 slidably sleeved on the outer surface of the main body 21;

[0032] Among them, the two sliding parts 22 are provided with first through holes along the thickness direction of the sliding parts 22, and the two sliding parts 22 are slidably disposed on the two sliding rods 1 through the first through holes respectively. The main body 21 is provided with an annular groove 211 along the circumferential end face of the main body 21. The annular groove 211 is fixedly disposed inside the annular groove 212, and the annular groove 211 of the semi-circular plate slide rail 2 is embedded with the annular groove 212. The rolling gear is driven by the servo motor 24 to mesh, which can control the needle seat 23 to move in the circumferential direction.

[0033] The slide rod 1 has a V-shaped guide groove extending axially on one side, and the sliding part 22 has a guide protrusion that cooperates with the V-shaped guide groove on the side close to the slide rod 1.

[0034] The needle holder 23 is fixedly provided with a motor 24 on one side. The output shaft of the motor 24 passes through the side wall of the needle holder 23 and is fixedly connected to the rolling gear. The needle holder 23 is fixedly provided with a first clamping part 231 on one side, and the first clamping part 231 holds the fixed needle 5.

[0035] It also includes: a plurality of first threaded holes equidistantly opened along the axial direction of the slide bar 1, a second threaded hole opened on the sliding part 22, and a fixing screw 6 passing through the first threaded hole and the second threaded hole;

[0036] The first threaded hole and the second threaded hole are arranged with their axes coincident and their thread specifications matched.

[0037] The first clamping part 231 includes: two symmetrically arranged arc-shaped grippers 232 fixedly disposed on one side of the needle seat 23, two connecting ear plates 233 respectively fixedly disposed at the ends of the two arc-shaped grippers 232, and an adjusting screw passing through the two connecting ear plates 233.

[0038] The inner arc surface of the arc-shaped gripper 232 is provided with anti-slip texture. The adjusting screw passes through the two connecting ear plates 233 in sequence to limit the size of the cavity formed by the two arc-shaped grippers 232, thereby fixing the fixing pin 5 and the first clamping part 231 relatively.

[0039] The fixing screw 6 is an internal hexagon screw, and the head end face of the internal hexagon screw is provided with anti-slip texture.

[0040] Among them, motor 24 is a servo motor.

[0041] The outer surface of the main body 21 is provided with scale markings, which provide the surgeon with real-time position reference and reduce the blindness of operation.

[0042] As a preferred implementation, the servo motor 24 and the lifting rod 4 can be connected to a numerical control system to achieve automated path planning in conjunction with preoperative CT data.

[0043] In use, first, place the semi-circular slide rail 2 above the affected area, and simultaneously install the lifting rod 4 in a suitable position on the operating table. Adjust the height of the lifting rod 4 according to the height of the patient's fracture site. Then, use locking bolts to temporarily fix the position of the lifting rod 4 on the slide rod 1 to ensure that the overall height of the device is adapted to the patient's condition. Align the guide protrusions of the sliding parts 22 at both ends of the semi-circular slide rail 2 with the "V" of the slide rod 1. The guide groove is slid along the slide rod 1 to the preset area. After reaching the preset area, the second threaded hole of the sliding part 22 is carefully aligned with the first threaded hole of the slide rod 1. The fixing screw 6 is inserted and tightened with a hex wrench to lock the semi-circular plate slide rail 2 on the slide rod 1, ensuring the stability of the slide rail position. At least two sets of semi-circular plate slide rails 2 and fixing pins 5 are installed at the proximal and distal ends of the fracture, respectively. The end of the fixing pin 5 is fixed to the fracture site. According to the fracture reduction requirements, the position of the fixing pin 5 is adjusted up and down. The lifting action of the fixing pin 5 is used to make the displaced bone fragments anatomically aligned, achieving the initial fracture reduction position adjustment. Then the fixing pin 5 is inserted into the first clamping part 23. Between the two arc-shaped grippers 232, ensure that the body of the fixation needle 5 is in full contact with the anti-slip texture of the inner arc surface of the arc-shaped grippers 232. By rotating the adjusting screw, make the two connecting ear plates 233 move closer to each other, thereby clamping the fixation needle 5 until the body of the fixation needle 5 no longer wobble, ensuring that the fixation needle 5 is stable. Start the motor 24 on one side of the needle seat 23. The motor 24 drives the rolling gear fixedly connected to its output shaft. Since the rolling gear meshes with the arc-shaped rack 212, it drives the needle seat 23 to move circumferentially along the semi-circular plate slide rail 2. At the same time, the needle seat 23 drives the body of the fixation needle 5 to rotate circumferentially along the needle seat 23, thereby correcting the rotational displacement of the bone fragment and completing the final fracture reduction operation.

[0044] In summary, the structural design of this invention features a V-shaped guide groove on the slide rod that works in conjunction with the guide protrusion on the sliding part to ensure smooth sliding and precise positioning of the semicircular plate slide rail. The addition of threaded holes and fixing screws securely locks the slide rail in place. The annular groove of the semicircular plate slide rail incorporates an arc-shaped rack, which, combined with a servo motor-driven rolling gear, precisely controls the movement of the needle holder along the circumferential direction, accurately correcting bone fragment rotation and displacement. Regarding ease of operation, the scale markings on the outer surface of the main body provide the surgeon with real-time positional references, reducing blind operation. The anti-slip texture on the inner arc surface of the arc-shaped gripper and the adjusting screw firmly clamp the fixing needle, ensuring stability during the reduction process. This significantly improves surgical efficiency and reduction accuracy, reduces surgical risks, and brings better treatment outcomes for fracture patients.

[0045] The above description is only a preferred embodiment of the present utility model and does not limit the implementation method and protection scope of the present utility model. Those skilled in the art should realize that all solutions obtained by equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A bone reduction device, characterized in that, include: Two sliding rods (1), several semi-circular plate slide rails (2), and several lifting rods (4) slidably disposed on the sliding rods (1); The semi-circular plate slide rail (2) includes: a main body (21), two sliding parts (22) fixedly disposed at the end of the main body (21), and a pin seat (23) slidably sleeved on the outer surface of the main body (21). Among them, the two sliding parts (22) are provided with first through holes along the thickness direction of the sliding parts (22), and the two sliding parts (22) are slidably disposed on the two sliding rods (1) through the first through holes respectively. The main body (21) is provided with an annular groove (211) along the circumferential end face of the main body (21). The annular groove (211) is fixedly disposed inside the arc-shaped rack (212), and the arc-shaped rack (212) meshes with the rolling gear. Among them, a motor (24) is fixedly provided on one side of the needle holder (23), the output shaft of the motor (24) passes through the side wall of the needle holder (23) and is fixedly connected to the rolling gear, and a first clamping part (231) is fixedly provided on one side of the needle holder (23), in which a fixed needle (5) is clamped.

2. The bone reduction device according to claim 1, characterized in that, Also includes: A plurality of first threaded holes are equidistantly opened along the axial direction of the slide bar (1), a second threaded hole is opened on the sliding part (22), and a fixing screw (6) passes through the first threaded hole and the second threaded hole. The first threaded hole and the second threaded hole are arranged with their axes coincident and their thread specifications matched.

3. The bone reduction device according to claim 1, characterized in that, The first clamping part (231) includes: two symmetrically arranged arc-shaped claws (232) fixedly disposed on one side of the needle seat (23), two connecting ear plates (233) fixedly disposed at the ends of the two arc-shaped claws (232), and an adjusting screw passing through the two connecting ear plates (233); The inner arc surface of the arc-shaped gripper (232) is provided with anti-slip texture, and the adjusting screw passes through the two connecting ear plates (233) in sequence to limit the size of the cavity formed by the two arc-shaped grippers (232), thereby fixing the fixing pin (5) and the first clamping part (231) relatively.

4. A bone reduction device according to claim 2, characterized in that, The fixing screw (6) is an internal hexagon screw, and the head end face of the internal hexagon screw is provided with anti-slip texture.

5. A bone reduction device according to claim 1, characterized in that, The motor (24) is a servo motor.

6. A bone reduction device according to claim 1, characterized in that, The outer surface of the main body (21) is provided with scale markings.

7. A bone reduction device according to claim 1, characterized in that, The slide bar (1) has a V-shaped guide groove extending axially on one side, and the sliding part (22) has a guide protrusion that cooperates with the V-shaped guide groove on the side close to the slide bar (1).

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