A bone traction device

Abstract

The utility model discloses a kind of bone traction devices, it is related to medical instrument technical field, it solves the technical problem that existing device is inconvenient to install and take out steelyard, leading to steelyard easy to drop.The utility model includes base, side rod and adjusting assembly, the adjusting assembly includes adjusting rod, the both ends of the adjusting rod are respectively equipped with first thread and second thread of opposite rotation, the first thread and the second thread are all thread-connected with the side rod, and the side rod is slidably connected with the base, the adjusting rod is rotationally arranged in the base interior, the adjusting rod at least one end penetrates the sidewall of the base and extends outward, the utility model has the advantages of convenient to use, good limiting effect etc..

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, specifically relating to a bone traction device. Background Technology

[0002] Bone traction is a commonly used orthopedic treatment method that mainly uses traction force and counter-traction force to act on the fracture site in order to achieve reduction, fixation and relief of related symptoms. In the currently common bone traction devices, the bone traction weight basket is an essential part, used to place and adjust the traction weights to control the magnitude of the traction force. When in use, it is suspended on the traction rope and the direction of the traction force is changed by a fixed pulley, so that the traction force is applied to the pulled part. However, the existing weight basket is prone to falling off after the weight is placed.

[0003] The document CN210991002U discloses a weight storage device, including a base with a cushioning pad and a post. The base has four protective rods on top, one end of each rod has a first mounting thread and the other end has a second mounting thread. The post is located on the top of the base, and the weight is placed on the post. A male thread is provided on one side wall of the post. In this device, the weight is surrounded by a protective railing to prevent it from falling.

[0004] However, in the above-mentioned device, the protective rod is fixed first to fix the top cover and the base, and then the weight is inserted through the gap of the protective rod and inserted into the plug. This makes the process of inserting and removing the weight extremely inconvenient and inefficient. Furthermore, the weight is prone to falling out during the process of inserting it through the gap between the two protective rods.

[0005] In view of the aforementioned problems with existing patents, it is necessary to study a bone traction device that facilitates the installation and removal of the weight. Utility Model Content

[0006] This utility model provides a bone traction device, which aims to solve the technical problem that existing devices are inconvenient to install and remove the weight, causing the weight to easily fall off.

[0007] To solve the aforementioned technical problems, the present invention adopts the following technical solution: A bone traction device includes a base, side bars, and an adjustment assembly. The adjustment assembly includes an adjustment rod, with a first thread and a second thread with opposite directions of rotation at both ends of the adjustment rod. The side rod is threadedly connected to both the first thread and the second thread, and the side rod is slidably connected to the base. The adjustment rod is rotatably disposed inside the base, and at least one end of the adjustment rod passes through the side wall of the base and extends outward.

[0008] In this invention, a screw-slider structure is used to enable the first slider to drive the side rod to move linearly. Specifically, the side rod can be regarded as a slider, and the adjusting rod passes through the side rod and is threadedly connected. Since the side rod is in sliding fit with the base plate, this sliding fit will restrict the movement of the side rod. When the adjusting rod is rotated, the adjusting rod will drive the side rod to move linearly. In addition, in order to speed up the adjustment, the two ends of the adjusting rod are provided with threads with opposite directions. When the adjusting rod is rotated, the two side rods will move relative to each other or in opposite directions, thereby realizing the rapid adjustment of the side rod and making it easier to install weights. Furthermore, in this invention, the weights are set on the base, and several weights can be stacked according to the traction needs. The weights are located between the two side rods. After the weights are placed, the side rods are limited by rotating the adjusting rod to prevent the weights from shifting or falling during the traction process, thus preventing safety issues caused by the weights shifting or falling.

[0009] Preferably, both ends of the adjusting rod penetrate the side wall of the base and extend outward, and both ends can rotate the adjusting rod, making it more convenient to use.

[0010] Preferably, the base is symmetrically provided with at least one set of guide grooves, each set of guide grooves includes two first sliding grooves, the adjusting rod passes through the two symmetrically arranged first sliding grooves, and a first slider is threadedly connected to both the first thread and the second thread. The first slider slides in cooperation with the first sliding groove, and the side rod is provided on the first slider.

[0011] After adopting this technical solution, it should be noted that the two first sliding grooves are arranged radially along the base. The length of the first sliding groove determines the adjustment range of the side rod. When the two first sliders are located at the two ends of the corresponding first sliding groove that are far apart from each other, the distance between the two side rods is the largest. Preferably, at this position, the distance between the two side rods is greater than the diameter of commonly used weights, which makes it more convenient to install or remove weights and prevents them from being blocked by the side rods, reducing the chance of weights colliding with the side rods and falling off.

[0012] Preferably, the base has four first sliding grooves, which form two sets of guide grooves. The four first sliding grooves are evenly distributed on the base at 90° intervals between each other. There are two adjusting rods, each passing through one of the two symmetrical first sliding grooves, and the two adjusting rods are staggered vertically.

[0013] After adopting this technical solution, it should be noted that in order to better limit the weight, four first sliding grooves are set, and corresponding first sliders and side rods are set, so that the weight is limited from all sides, and the weight will not fall when tilted, thus improving safety. In addition, the two adjusting rods control the movement of the first slider in the two sets of symmetrical guide grooves respectively. The two sets of guide grooves are perpendicular to each other, so the two adjusting rods are staggered in the vertical direction to avoid interference. This vertical direction refers to the direction perpendicular to the base.

[0014] Preferably, limiting plates are provided on both sides of the first chute, and the side rod passes through the space between the two limiting plates.

[0015] After adopting this technical solution, it should be noted that the limiting plate limits the first slider to prevent the first slider from moving in the vertical direction; In this utility model, the limiting plate can be set at the top of the first slide groove and flush with the upper surface of the base. With this method, the first slider will be located below the limiting plate, and the limiting plate restricts the upward movement of the first slider. Alternatively, the limiting plate can be set in the middle of the side wall of the first slide groove. By opening a through groove on the side wall of the first slider, the limiting plate cooperates with the through groove to achieve the limiting.

[0016] Furthermore, the base sidewall is provided with a first through hole and a second through hole, the first through hole and the second through hole are arranged along the direction corresponding to the first sliding groove, and the adjusting rod is rotatably arranged in the first through hole and the second through hole respectively.

[0017] After adopting this technical solution, it should be noted that the first through hole and the second through hole are set along the direction of the two sets of guide grooves, and both ends of the second adjusting rod pass through the corresponding through hole and extend outward to facilitate operation.

[0018] Preferably, the side rod includes a first stop and a second stop, both of which are L-shaped. One end of the first stop and the second stop are connected to two symmetrical first sliders, and the other ends of the first stop and the second stop are sleeved on each other.

[0019] After adopting this technical solution, it should be noted that the first stop and the second stop can be divided into two parts: a vertical part and a horizontal part, thus forming an L-shape. The vertical part is connected to the first slider. This connection can be a fixed connection or a detachable connection. A threaded connection is preferred for a detachable connection. The horizontal parts of the first stop and the second stop are interlocked. When the distance between the symmetrical first stop and the second stop is at its maximum, the horizontal parts are still in the interlocked state. This interlocking method improves the stability and rigidity of the top of the stop. In this invention, the upper ends of the first and second stops corresponding to one set of guide grooves are vertically offset from the upper ends of the first and second stops corresponding to another set of guide grooves. Specifically, the vertical heights of the stops corresponding to the two sets of guide grooves are different, while the heights of the stops corresponding to the same set of guide grooves are consistent, thereby offsetting the overall height of the stops and preventing interference during contraction.

[0020] Preferably, the base has a first fixing hole at its center, and a vertical fixing rod is threaded into the first fixing hole. The first stop and the second stop both pass through the fixing rod, and the fixing rod is provided with a hook.

[0021] After adopting this technical solution, it should be noted that the fixing rod is used for preliminary positioning of the weight. The fixing rod cooperates with the notch of the weight to achieve preliminary positioning, ensuring that the weight is located in the center of the base to improve stability. The diameter of the fixing rod is larger than the diameter of the first stop and the second stop so that the stop can pass through.

[0022] Preferably, in one embodiment of this application, such as Figure 8 , Figure 9 As shown, the first stop bar and the second stop bar are U-shaped bars. With this setting, the size of the base can be reduced, preventing the base diameter from being too large and being blocked by the bed edge, thus increasing safety and traction stability.

[0023] Preferably, the first stop and the second stop are vertical rods, and the first stop and the second stop are provided with a top plate. The lower end of the top plate is provided with a second slide groove corresponding to the first slide groove. The first stop and the second stop are provided with a second slider, and the second slider is slidably engaged with the second slide groove.

[0024] After adopting this technical solution, it should be noted that when the adjusting rod is rotated, the first slider and the corresponding second slider will move synchronously to change the diameter of the circle formed by the four stops. In this solution, the first and second stops only have vertical parts and are at the same height. In addition, the second slide is also equipped with a limiting plate that is the same as that of the first slide; its setting method and structure will not be described in detail here.

[0025] Preferably, the top plate has a second fixing hole at its center, and the upper end of the fixing rod extends upward through the second fixing hole and is threadedly connected to the second fixing hole.

[0026] After adopting this technical solution, it should be noted that, in order to further increase the stability of the device and the limiting stability of the weight, a top plate is set up, and the base and the top plate are fixed simultaneously by a fixing rod to achieve the fixation of the entire device; Furthermore, it should be noted that in this design, since the lateral part of the stop bar is eliminated, the through hole for the stop bar to pass through is no longer provided on the fixing rod to increase the overall rigidity. In this design, both ends of the fixing rod are provided with the same type of thread, which are threaded to the base and the top plate respectively.

[0027] Furthermore, each end of the adjusting rod is provided with a limiting ring, and the inner walls of both ends of the first through hole and the second through hole are provided with annular limiting grooves, and the limiting rings are rotatably engaged with the limiting grooves.

[0028] After adopting this scheme, it should be noted that the limiting ring and the limiting groove cooperate to restrict the movement of the adjusting rod along the direction of the first sliding groove, and the adjusting rod can only rotate.

[0029] Preferably, the base is also provided with an anti-slip component to prevent the weight from sliding and to provide shock absorption. This anti-slip component can be made of rubber.

[0030] The steps for using this utility model are as follows: Rotate the adjusting rod, relying on the screw-slider principle to move the corresponding first and second stops in opposite directions until the gap between the first and second stops is large enough to allow the weight to be placed. After aligning the notch of the weight with the fixed rod, place it in the center of the base. At this point, you can rotate the adjusting rod in the opposite direction to move the corresponding first and second stops towards each other until they are close to or in contact with the weight. In normal use, you can keep one adjusting rod stationary and rotate the other adjusting rod when installing or removing the weight. Adjust both adjusting rods when the size of the weight changes. After installation, the weight will be suspended by hooks for pulling. The process of removing the weight is the reverse of the above process and will not be described in detail here.

[0031] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are: 1. The bone traction device provided by this utility model utilizes a screw-slider structure to enable the first slider to drive the side rod to move linearly. Furthermore, by setting threads with opposite directions at both ends of the adjusting rod, when the adjusting rod is rotated, the two first sliders will move relative to or away from each other, thereby achieving rapid adjustment of the side rod and making it easier to install weights.

[0032] 2. The bone traction device provided by this utility model, by setting four first sliding grooves and correspondingly setting first sliders and side rods, limits the weight from all sides, so that the weight will not fall off when tilted, thus improving safety.

[0033] 3. The bone traction device provided by this utility model further increases the stability of the device and the limiting stability of the weight by setting a top plate. Attached Figure Description

[0034] This utility model will be described by way of example and with reference to the accompanying drawings, wherein: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the base structure of this utility model; Figure 3 This utility model Figure 2 Sectional view along line AA; Figure 4 This is a schematic diagram of the adjustment component structure of this utility model; Figure 5 This is a schematic diagram of the adjusting rod structure of this utility model; Figure 6 This is a schematic diagram of the first slider structure of this utility model; Figure 7 This is a schematic diagram of one embodiment of the present invention; Figure 8 This is a schematic diagram of one embodiment of the present invention; Figure 9 This utility model Figure 8 Schematic diagram of the middle section; Figure 10 This is a schematic diagram of one embodiment of the present invention.

[0035] Figure label: 1-Base, 101-First sliding groove, 102-First fixing hole, 2-Side rod, 201-First stop rod, 202-Second stop rod, 3-Top plate, 4-Fixing rod, 5-Hook, 6-Adjusting rod, 601-First thread, 602-Second thread, 603-Limiting ring, 7-First through hole, 8-Second through hole, 9-Anti-slip component, 10-Limiting plate, 11-Limiting groove, 12-First slider, 1201-Threaded hole, 1202-Connecting hole, 13-Second slider. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the embodiments and accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. The components of the embodiments of this application described and marked in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0037] In the description of the embodiments of this application, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility product is in use. They are only for the convenience of describing this application 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 application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0038] The following is combined with Figures 1-10 This utility model will be described in detail. Example 1

[0039] A bone traction device, such as Figures 1-6 As shown, it includes a base 1, a side rod 2, and an adjustment assembly. The adjustment assembly includes an adjustment rod 6. The two ends of the adjustment rod 6 are respectively provided with a first thread 601 and a second thread 602 with opposite directions of rotation. The side rod 2 is threadedly connected to both the first thread 601 and the second thread 602. The side rod 2 is slidably connected to the base 1. The adjustment rod 6 is rotatably disposed inside the base 1. At least one end of the adjustment rod 6 passes through the side wall of the base 1 and extends outward.

[0040] Both ends of the adjusting rod 6 penetrate the side wall of the base 1 and extend outward, and both ends can rotate the adjusting rod 6, making it more convenient to use.

[0041] At least one set of guide grooves are symmetrically provided on the base 1. Each set of guide grooves includes two first slide grooves 101. The adjusting rod 6 passes through the two first slide grooves 101 that are symmetrically arranged. A first slider 12 is threadedly connected to both the first thread 601 and the second thread 602. The first slider 12 slides in cooperation with the first slide groove 101, and the side rod 2 is provided on the first slider 12.

[0042] Limiting plates 10 are provided on both sides of the first slide groove 101, and the side rod 2 passes through the two limiting plates 10.

[0043] The base 1 has a first through hole 7 through its side wall. The first through hole 7 is arranged along the direction corresponding to the first slide groove 101. The adjusting rod 6 is rotatably arranged in the first through hole 7.

[0044] The side rod 2 includes a first stop rod 201 and a second stop rod 202. Both the first stop rod 201 and the second stop rod 202 are L-shaped. One end of the first stop rod 201 and the second stop rod 202 is connected to two symmetrical first sliders 12, and the other ends of the first stop rod 201 and the second stop rod 202 are sleeved on each other.

[0045] Both ends of the adjusting rod 6 are provided with limiting rings 603, and both ends of the first through hole 7 are provided with annular limiting grooves 11. The limiting rings 603 and the limiting grooves 11 are rotatably engaged.

[0046] In this embodiment, a lead screw and slider structure is used to enable the first slider 12 to drive the side rod 2 to move linearly. In order to speed up the adjustment, the two ends of the adjusting rod 6 are provided with threads of opposite directions. When the adjusting rod 6 is rotated, the two first sliders 12 will move relative to each other or in opposite directions, thereby realizing the rapid adjustment of the side rod 2 and making it easier to install the weight. After the weight is placed, the side rod 2 is limited by rotating the adjusting rod 6 to prevent the weight from shifting or falling during the traction process and causing safety problems. Example 2

[0047] The difference between this embodiment and Embodiment 1 is that, as Figures 1-6 As shown, the base 1 has four first sliding grooves 101, which form two sets of guide grooves. The four first sliding grooves 101 are evenly distributed on the base 1 at 90° intervals. Two adjusting rods 6 are provided, each of which passes through two symmetrical first sliding grooves 101, and the two adjusting rods 6 are staggered in the vertical direction.

[0048] The base 1 is also provided with a second through hole 8 through its side wall. The second through hole 8 is arranged in the direction corresponding to the first sliding groove 101. The adjusting rod 6 is rotatably arranged in the second through hole 8.

[0049] In this embodiment, in order to better limit the weight, four first sliding grooves 101 are set, and corresponding first sliders 12 and side rods 2 are set, so that the weight is limited from all sides, and the weight will not fall when tilted, thus improving safety. In addition, the two adjusting rods 6 control the movement of the first slider 12 in the two sets of symmetrical guide grooves respectively. The two sets of guide grooves are perpendicular to each other. Therefore, the two adjusting rods 6 are staggered in the vertical direction to avoid interference. This vertical direction refers to the direction perpendicular to the base 1. Example 3

[0050] The difference between this embodiment and Embodiment 2 is that, as Figures 1-3As shown, the base 1 has a first fixing hole 102 at its center, and a vertical fixing rod 4 is threaded into the first fixing hole 102. The first stop rod 201 and the second stop rod 202 both pass through the fixing rod 4, and a hook 5 is provided on the fixing rod 4.

[0051] In this embodiment, the fixing rod 4 is used to initially position the weight. The fixing rod 4 cooperates with the notch of the weight to achieve initial positioning, ensuring that the weight is located in the center of the base 1 to improve stability. Example 4

[0052] The difference between this embodiment and embodiment 3 is that, as Figure 7 As shown, the first stop bar 201 and the second stop bar 202 are vertical bars. The first stop bar 201 and the second stop bar 202 are provided with a top plate 3. The lower end of the top plate 3 is provided with a second sliding groove corresponding to the first sliding groove 101. The first stop bar 201 and the second stop bar 202 are provided with a second slider 13, which slides in cooperation with the second sliding groove.

[0053] The top plate 3 has a second fixing hole at its center, and the upper end of the fixing rod 4 extends upward through the second fixing hole and is threadedly connected to the second fixing hole.

[0054] The inner walls at both ends of the second through hole 8 are provided with annular limiting grooves 11, and the limiting ring 603 is rotatably engaged with the limiting grooves 11.

[0055] In this embodiment, in order to further increase the stability of the device and the limiting stability of the weight, a top plate 3 is provided, and the base 1 and the top plate 3 are fixed simultaneously by a fixing rod 4 to achieve the fixation of the entire device. Example 5

[0056] The difference between this embodiment and embodiment 4 is that, as Figure 8 , Figure 9 As shown, the first stop bar 201 and the second stop bar 202 are U-shaped bars. With this setting, the size of the base 1 can be reduced, preventing the base 1 from being too large in diameter and being blocked by the bed edge, thus increasing safety and traction stability.

[0057] The steps for using this utility model are as follows: Rotate the adjusting rod 6, and relying on the screw-slider principle, move the corresponding first stop 201 and second stop 202 in opposite directions until the gap between the first stop 201 and second stop 202 is large enough to allow the weight to be inserted between the two stops. The weight's notch is then aligned with the fixed rod 4 and placed in the center of the base 1. At this point, rotate the adjusting rod 6 in the opposite direction to move the corresponding first stop 201 and second stop 202 towards each other until they approach or contact the weight. In normal use, one adjusting rod 6 can be kept stationary, and the other adjusting rod 6 can be rotated to install or remove the weight. Adjust both adjusting rods 6 when the weight size changes. After installation, the weight will be suspended by the hook 5 for pulling. The process of removing the weight is the reverse of the above process and will not be described further here. Example 6

[0058] The difference between this embodiment and embodiment 5 is that, as Figure 10 As shown, the hook 5 is a spring-loaded, press-to-open hook, which has better strength and stability.

[0059] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A bone traction device, characterized in that, Includes a base (1), side rods (2), and adjustment components. The adjustment assembly includes an adjustment rod (6), with a first thread (601) and a second thread (602) with opposite directions of rotation at both ends of the adjustment rod (6). The side rod (2) is threaded onto both the first thread (601) and the second thread (602), and the side rod (2) is slidably connected to the base (1). The adjustment rod (6) is rotatably disposed inside the base (1), and at least one end of the adjustment rod (6) penetrates the side wall of the base (1) and extends outward.

2. The bone traction device according to claim 1, characterized in that, At least one set of guide grooves are symmetrically provided on the base (1). Each set of guide grooves includes two first slide grooves (101). The adjusting rod (6) passes through the two first slide grooves (101) that are symmetrically arranged. A first slider (12) is threadedly connected to both the first thread (601) and the second thread (602). The first slider (12) slides with the first slide groove (101). The side rod (2) is provided on the first slider (12).

3. The bone traction device according to claim 2, characterized in that, The base (1) has four first sliding grooves (101), which form two sets of guide grooves. The four first sliding grooves (101) are evenly distributed on the base (1) at 90° intervals. There are two adjusting rods (6), which pass through the two first sliding grooves (101) that are symmetrical to each other, and the two adjusting rods (6) are staggered in the vertical direction.

4. A bone traction device according to claim 2, characterized in that, The base (1) has a first through hole (7) and a second through hole (8) through its side wall. The first through hole (7) and the second through hole (8) are arranged in the direction corresponding to the first slide groove (101). The adjusting rod (6) is rotatably arranged in the first through hole (7) and the second through hole (8).

5. A bone traction device according to claim 2, characterized in that, The side rod (2) includes a first stop (201) and a second stop (202). Both the first stop (201) and the second stop (202) are L-shaped. One end of the first stop (201) and the second stop (202) is connected to two symmetrical first sliders (12), and the other ends of the first stop (201) and the second stop (202) are sleeved on each other.

6. A bone traction device according to claim 5, characterized in that, The base (1) has a first fixing hole (102) at its center. A vertical fixing rod (4) is threaded into the first fixing hole (102). The first stop (201) and the second stop (202) both pass through the fixing rod (4). A hook (5) is provided on the fixing rod (4).

7. A bone traction device according to claim 6, characterized in that, The first stop (201) and the second stop (202) are vertical rods. The first stop (201) and the second stop (202) are provided with a top plate (3). The lower end of the top plate (3) is provided with a second slide groove corresponding to the first slide groove (101). The first stop (201) and the second stop (202) are provided with a second slider (13). The second slider (13) slides in cooperation with the second slide groove.

8. A bone traction device according to claim 7, characterized in that, The top plate (3) has a second fixing hole at its center, and the upper end of the fixing rod (4) extends upward through the second fixing hole and is threadedly connected to the second fixing hole.

9. A bone traction device according to claim 4, characterized in that, The adjusting rod (6) is provided with limiting rings (603) at both ends, and the inner walls of the first through hole (7) and the second through hole (8) are provided with annular limiting grooves (11). The limiting rings (603) and the limiting grooves (11) are rotatably engaged.

10. A bone traction device according to any one of claims 1-9, characterized in that, The base (1) is also provided with anti-slip parts (9).

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