A bone joint fixation device

Abstract

The utility model relates to medical instrument technical field, concretely relates to a bone joint fixing device, including first supporting plate and second supporting plate, still include adjusting assembly, adjusting assembly includes first inner lining, second inner lining, worm wheel, mounting seat and worm, when needing to adjust joint angle, through the rotation knob drive worm rotation, further make worm drive worm wheel rotation, worm wheel drive second supporting plate and inner lining rotate to drive patient's limbs rotation, when adjusting in place, through the self -locking nature between worm wheel and worm, lock the angle after adjusting, do not need to carry out additional locking operation, simultaneously because of the position change between patient's forearm and second supporting plate during second supporting plate angle adjusting process, through the sliding of second inner lining, can automatically adjust the support position of patient's forearm on second supporting plate.

Description

Technical Field

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

[0002] When bones and joints are damaged or the bones of bones and joints are injured, timely treatment is necessary. Fractures and joint dysfunction are among the most common diseases of bones and joints. In the treatment of these diseases, fixing the bones and restricting their movement before healing are important measures to maximize the recovery of the injured limb. Traditional bone and joint fixation devices cannot change the angle of the fixation mechanism according to the actual angle of the patient's limb, so the fixation mechanism cannot fit the limb well.

[0003] Prior art CN219700239U discloses a joint fixation device, including a first fixation bracket and a second fixation bracket, which are connected by an elastic pad. A first connecting rod is hinged to both sides of the first fixation bracket, and a second connecting rod is hinged to both sides of the second fixation bracket. A common fixing bolt passes through both the first and second connecting rods, and a threaded cap is threaded onto the fixing bolt. Under the combined action of the connecting rods, the second connecting rods, the fixing bolt, and the threaded cap, loosening the threaded cap allows adjustment of the angle between the first and second fixation brackets. Once a suitable angle is reached, tightening the threaded cap fixes the adjusted angle and allows the first, second, and third fixation brackets to better conform to the limb, resulting in better fixation of the limb.

[0004] The aforementioned device can adjust the angle between the first fixed support and the second fixed support, thereby facilitating the fit to the limb. However, during adjustment, since the patient's limb cannot bend independently, medical staff are required to assist in the adjustment. Furthermore, after the adjustment is completed, the threaded cap needs to be tightened for fixation. This operation is cumbersome and inconvenient for angle adjustment. Utility Model Content

[0005] The purpose of this invention is to provide a bone and joint fixation device that solves the problem that existing bone and joint fixation devices require medical staff to assist in adjustment, and after adjustment, the threaded cap needs to be tightened for fixation. This operation is cumbersome and inconvenient for angle adjustment.

[0006] To achieve the above objectives, this utility model provides a joint fixation device, including a first support plate and a second support plate, which are rotatably connected. It also includes an adjustment assembly. The adjustment assembly includes a first inner liner, a second inner liner, a worm gear, a mounting base, and a worm. The first inner liner is fixedly connected to the first support plate and disposed on the first support plate. The second inner liner is slidably connected to the second support plate and disposed on the second support plate. The worm gear is fixedly connected to the second support plate and disposed on the second support plate. The mounting base is fixedly connected to the first support plate and located on the side of the first support plate away from the first inner liner. The worm gear is rotatably connected to the mounting base and meshes with the worm gear.

[0007] The second liner includes a slider, a placement seat, and a fixing strap. The slider is slidably connected to the second tray and is located inside the second tray. The placement seat is fixedly connected to the slider and is disposed on the slider. The fixing strap is disposed on the placement seat.

[0008] The first liner also includes a sponge pad, which is connected to the placement seat and located inside the placement seat.

[0009] The fixing strap includes a strap, a hook and loop fastener, and a hook and loop fastener. The strap is connected to the placement seat and is located on one side of the placement seat. The hook and loop fastener is connected to the strap and is located on one side of the strap. The hook and loop fastener is connected to the placement seat and is disposed on the placement seat.

[0010] The adjustment assembly further includes a support pad, the two sides of which are connected to the placement seat and the first inner liner, respectively, and the support pad is disposed on the placement seat.

[0011] This utility model discloses a joint fixation device. In use, the patient's upper arm and forearm are fixed to the first inner liner and the second inner liner, respectively. The self-locking mechanism between the worm gear and the worm prevents the second inner liner from rotating freely, thus fixing the patient's joint. When joint angle adjustment is needed, rotating the knob drives the worm to rotate, which in turn drives the worm gear to rotate. The worm gear then drives the second support plate and the second inner liner to rotate, thereby rotating the patient's limb. Once the adjustment is complete, the self-locking mechanism between the worm gear and the worm locks the adjusted angle without requiring additional locking. Simultaneously, because the position of the patient's forearm changes during the second support plate angle adjustment, the sliding of the second inner liner automatically adjusts the support position of the patient's forearm on the second support plate, ensuring that the forearm always receives uniform and stable support. This avoids discomfort or pressure concentration points during angle adjustment, thus facilitating convenient adjustment of the angle between the first and second support plates. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0013] Figure 1 This is a schematic diagram of the overall structure of the bone and joint fixation device of this utility model.

[0014] Figure 2 This is a schematic diagram of the worm gear installation structure of this utility model.

[0015] Figure 3 This is a schematic diagram of the installation structure of the strap of this utility model.

[0016] In the diagram: 101-First support plate, 102-Second support plate, 103-Adjusting component, 104-First inner liner, 105-Second inner liner, 106-Worm gear, 107-Mounting base, 108-Worm, 109-Slider, 110-Placement base, 111-Fixing strap, 112-Sponge pad, 113-Strap, 114-Hook and loop fastener, 115-Hook and loop fastener, 116-Support pad. Detailed Implementation

[0017] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0018] Please see Figures 1 to 3 ,in Figure 1This is a schematic diagram of the overall structure of the bone and joint fixation device. Figure 2 This is a schematic diagram of the worm gear installation structure. Figure 3 This is a schematic diagram of the installation structure of the straps.

[0019] This utility model provides a joint fixation device, including a first support plate 101, a second support plate 102, and an adjustment component 103. The adjustment component 103 includes a first inner liner 104, a second inner liner 105, a worm gear 106, a mounting base 107, a worm 108, and a support pad 116. The first inner liner 104 includes a slider 109, a placement base 110, a fixing strap 111, and a sponge pad 112. The fixing strap 111 includes a strap 113, a Velcro closure 114, and a Velcro closure closure 115. The worm gear 106 is driven to rotate by the worm 108, which in turn drives the second support plate 102 and the second inner liner 105 to rotate, so that the second inner liner 105 can adjust the angle of the patient's limb. It is understood that the above solution can be used to facilitate the adjustment of the angle of the first support plate 101 and the second support plate 102.

[0020] In this specific embodiment, the first support plate 101 and the second support plate 102 are rotatably connected. The first inner liner 104 and the second inner liner 105 have the same structure, except that the second inner liner 105 can slide on the second support plate 102. A knob is also installed at one end of the worm gear 108, which facilitates the rotation of the worm gear 108.

[0021] The first inner liner 104 is fixedly connected to the first support plate 101 and is disposed on the first support plate 101. The second inner liner 105 is slidably connected to the second support plate 102 and is disposed on the second support plate 102. The worm gear 106 is fixedly connected to the second support plate 102 and is disposed on the second support plate 102. The mounting base 107 is fixedly connected to the first support plate 101 and is located on the side of the first support plate 101 away from the first inner liner 104. The worm 108 is rotatably connected to the mounting base 107 and meshes with the worm gear 106. In use, the patient's upper arm and forearm are fixed to the first inner liner 104 and the second inner liner 105 respectively. Through the self-locking property between the worm gear 106 and the worm 108, the second inner liner 105 cannot rotate freely, thereby fixing the patient's joints. When it is necessary to adjust the joint angle... During adjustment, rotating the knob drives the worm gear 108 to rotate, which in turn drives the worm wheel 106 to rotate. The worm wheel 106 then drives the second support plate 102 and the second inner liner 105 to rotate, thereby rotating the patient's limb. Once the adjustment is complete, the self-locking property between the worm wheel 106 and the worm gear 108 locks the adjusted angle without requiring additional locking. Simultaneously, since the position between the patient's forearm and the second support plate 102 changes during angle adjustment, the sliding of the second inner liner 105 automatically adjusts the support position of the patient's forearm on the second support plate 102, ensuring that the forearm always receives uniform and stable support. This avoids discomfort or pressure concentration points during angle adjustment, thus facilitating the adjustment of the angle between the first support plate 101 and the second support plate 102.

[0022] Secondly, the slider 109 is slidably connected to the second support plate 102 and is located inside the second support plate 102; the placement seat 110 is fixedly connected to the slider 109 and is disposed on the slider 109; the fixing strap 111 is disposed on the placement seat 110; by sliding the slider 109 and the second support plate 102, the placement seat 110 can slide on the second support plate 102. The inner side of the placement seat 110 is arc-shaped, which can better fit the shape of the patient's limb and improve the patient's comfort during use. Multiple fixing straps 111 are provided to fix the patient's limb to the placement seat 110.

[0023] Meanwhile, the sponge pad 112 is connected to the placement seat 110 and located inside the placement seat 110; the sponge pad 112 comes into contact with the patient's limbs, further improving the patient's comfort during use.

[0024] Additionally, the strap 113 is connected to the placement seat 110 and located on one side of the placement seat 110; the Velcro tab 114 is connected to the strap 113 and located on one side of the strap 113; the Velcro tab 115 is connected to the placement seat 110 and is disposed on the placement seat 110; the Velcro tab 114 and the Velcro tab 115 can be attached to each other, one end of the strap 113 is fixedly connected to the placement seat 110, and the Velcro tab 114 is disposed at the end of the strap 113 away from the placement seat 110; in use, the strap 113 is wrapped around the patient's limb, and the Velcro tab 114 is attached to the Velcro tab 115, thereby fixing the patient's limb to the placement seat 110.

[0025] Finally, the two sides of the support pad 116 are respectively connected to the placement seat 110 and the first inner liner 104, and the support pad 116 is disposed on the placement seat 110; the support pad 116 is made of flexible material, and the support pad 116 supports the patient's elbow, avoiding the patient's elbow from contacting the first support plate 101 or the second support plate 102, and reducing the pressure and discomfort that may be caused by long-term fixation.

[0026] When using the bone and joint fixation device of this utility model, the patient's forearm is fixed to the placement seat 110 by the fixing strap 111, and the patient's upper arm is similarly fixed to the first inner liner 104. When it is necessary to adjust the angle between the first support plate 101 and the second support plate 102, the worm gear 108 is rotated to drive the worm wheel 106 to rotate, thereby causing the worm wheel 106 to drive the first support plate 101 to rotate, thus adjusting the angle between the first support plate 101 and the second support plate 102. At the same time, the self-locking property between the worm wheel 106 and the worm gear 108 avoids the need for additional locking operations. When adjusting the angle between the first support plate 101 and the second support plate 102, the position of the patient's forearm can be adaptively adjusted by sliding the placement seat 110, thereby achieving convenient adjustment of the angle between the first support plate 101 and the second support plate 102 and facilitating use.

[0027] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A joint fixation device, comprising a first support plate and a second support plate, wherein the first support plate and the second support plate are rotatably connected, characterized in that, It also includes adjustment components; The adjusting assembly includes a first inner liner, a second inner liner, a worm gear, a mounting base, and a worm. The first inner liner is fixedly connected to the first support plate and is disposed on the first support plate. The second inner liner is slidably connected to the second support plate and is disposed on the second support plate. The worm gear is fixedly connected to the second support plate and is disposed on the second support plate. The mounting base is fixedly connected to the first support plate and is located on the side of the first support plate away from the first inner liner. The worm is rotatably connected to the mounting base and meshes with the worm gear.

2. The bone and joint fixation device as described in claim 1, characterized in that, The second liner includes a slider, a placement seat, and a fixing strap. The slider is slidably connected to the second tray and is located inside the second tray. The placement seat is fixedly connected to the slider and is disposed on the slider. The fixing strap is disposed on the placement seat.

3. The joint fixation device as described in claim 2, characterized in that, The first liner also includes a sponge pad, which is connected to the placement seat and located inside the placement seat.

4. The joint fixation device as described in claim 2, characterized in that, The fixing strap includes a strap, a hook and loop fastener, and a hook and loop fastener. The strap is connected to the placement base and is located on one side of the placement base; the hook and loop fastener is connected to the strap and is located on one side of the strap; the hook and loop fastener is connected to the placement base and is disposed on the placement base.

5. The joint fixation device as described in claim 2, characterized in that, The adjustment assembly also includes a support pad, the two sides of which are connected to the placement seat and the first inner liner, respectively, and the support pad is disposed on the placement seat.

Images