Leg fracture treatment traction device

Abstract

The application provides a leg fracture treatment traction device, which comprises a supporting cylinder and a supporting rod, the supporting rod is provided with a first pulley and a mounting cylinder, the mounting cylinder is provided with a rotatable second pulley, the mounting cylinder is provided with a mounting rod which is slidable and rotatable along the axis of the mounting cylinder, the mounting rod is provided with a third pulley at one end, the first pulley and the third pulley are overlapped with a traction rope, one end of the traction rope is fixedly connected with the second pulley, and the other end of the traction rope is provided with a traction frame. The mounting cylinder is provided with a winding assembly which is connected with the second pulley, so as to drive the second pulley to rotate and wind the traction rope. The mounting cylinder is also provided with a locking assembly which is connected with the mounting rod, so as to lock or unlock the position of the mounting rod after sliding. The traction device can quickly adjust the position and height of the traction frame, and the adjustment of the position and height of the traction frame only needs to operate the mounting rod, without complicated operation procedures, so that the efficiency of leg fracture treatment traction is improved.

Description

Technical Field

[0001] This invention specifically relates to a traction device for treating leg fractures. Background Technology

[0002] Bone traction can generally be used in the transitional stage before fracture surgery, and can also be used for postoperative continuous fixation of hip dislocation. In addition, it can be used to treat fractures of the hip joint. The traction time for treating fractures is 6-8 weeks, while the traction time for transitional treatment is about one week. Special traction devices are required for the use of leg bones during traction.

[0003] For example, Chinese invention patent number 201610060172.7 provides an automatic traction and rotational reduction device for leg fractures. This device can be used for leg traction and provides real-time feedback on the traction force, avoiding potentially serious consequences from over-traction. The traction force data during the traction process can serve as a reference for subsequent similar surgeries. However, in use, the height of the telescopic sleeve can be adjusted to move the fixed footplate up and down, thus adjusting the traction height. The traction position can also be adjusted by controlling the lateral movement of the fixed footplate via a first servo motor.

[0004] Therefore, it can be seen that the existing traction device is not convenient for quick and precise adjustment of the traction position and traction height, which makes the traction of the patient's leg more cumbersome during use and reduces its effectiveness. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the present invention proposes a traction device for treating leg fractures, which solves the technical problem mentioned in the background art that the existing traction devices are inconvenient to quickly and accurately adjust the traction position and traction height, resulting in cumbersome traction of the patient's leg during use and reducing their effectiveness.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a traction device for treating leg fractures, comprising:

[0007] A support cylinder, on which a support rod is provided, a first pulley and a mounting cylinder are provided on the support rod, and a rotatable second pulley is provided on the mounting cylinder;

[0008] The mounting rod is slidably and rotatably inserted into the mounting cylinder along its axis, and a third pulley is provided at one end of it;

[0009] The traction rope is attached to the first pulley and the third pulley, with one end fixedly connected to the second pulley and the other end provided with a traction frame;

[0010] A winding assembly, disposed on the mounting cylinder and connected to the second pulley, drives the second pulley to rotate and wind up the traction rope; and

[0011] A locking component is disposed on the mounting cylinder and connected to the mounting rod to lock or unlock the position of the slidable mounting rod.

[0012] In a preferred embodiment, the winding assembly includes:

[0013] A worm sleeve is rotatably disposed inside the mounting cylinder along its axis. A first rack extending along its axis is disposed inside the worm sleeve. A mounting groove extending along its axis is provided on the mounting rod. The first rack is slidably engaged in the mounting groove.

[0014] A worm gear, rotatably mounted on the mounting cylinder along its axis, and penetrating the mounting cylinder to mesh with the worm sleeve; the second pulley is coaxially connected to the worm gear; and

[0015] A handle is provided at one end of the mounting rod.

[0016] In a preferred embodiment, the locking component includes:

[0017] The second rack is vertically and retractably disposed in the mounting slot, and the second rack meshes with the first rack;

[0018] A first elastic element is disposed between the second rack and the bottom surface of the mounting groove; and

[0019] A control column is located at one end of the second rack and is vertically movable along its axis on the handle and extends outward.

[0020] In a preferred embodiment, the bottom of the support cylinder is provided with a crossbar that can slide along its axis, the two ends of the mounting rod are rotatably mounted on the crossbar, and the third pulley is provided at one end of the crossbar.

[0021] In a preferred embodiment, a first connecting frame is fixedly provided on the support rod, and a second connecting frame is provided on the mounting cylinder. The first connecting frame and the second connecting frame are rotatably connected, and a first fixing component is also provided on the first connecting frame to connect with the second connecting frame.

[0022] In a preferred embodiment, the first fixing component includes:

[0023] A fixed column is slidably mounted on the first connecting frame along its axis. The second connecting frame has a fixing hole, and one end of the fixed column passes through the fixing hole.

[0024] A mounting bracket is disposed at one end of the fixed post; and

[0025] A threaded knob, one end of which is rotatably mounted on the second connecting bracket along its axis, passes through the mounting bracket and is screwed to it.

[0026] In a preferred embodiment, the support rod is vertically movable inside the support cylinder, and a second fixing component for fixing the position of the support rod is provided at the bottom of the support rod.

[0027] In a preferred embodiment, the second fixing component includes a mounting post, a through hole at the bottom of the support rod, the mounting post being slidably disposed within the through hole along its axis, a baffle and a locking post at each end of the mounting post, a pull ring at one end of the locking post, a sliding groove extending along its axis on the support cylinder, a connecting locking hole at each end of the sliding groove, the locking post being slidably engaged within the locking hole, and a second elastic element sleeved on the mounting post, the two ends of the second elastic element being connected to the baffle and the through hole respectively.

[0028] In a preferred embodiment, the diameter of the locking post is greater than the diameter of the mounting post, and the width of the groove is greater than the diameter of the mounting post but less than the diameter of the locking post.

[0029] In a preferred embodiment, the support cylinder has a through groove extending along its axis, one end of which is an opening connecting to the outside.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] 1. In use, the support cylinder is fixed in the area of ​​use, and the patient's leg is secured to the traction frame. Traction is applied to the patient's leg via a traction rope. When adjustment of the traction position is required before traction, the position of the third pulley can be adjusted by controlling the sliding of the mounting rod along the axis of the mounting cylinder. The position of the mounting rod is then fixed in place by a locking assembly to prevent displacement. When the height of the traction frame needs adjustment, the second pulley can be rotated via a winding assembly to wind up the traction rope. Adjusting the position and height of the traction frame only requires operating the mounting rod, eliminating cumbersome procedures and improving the efficiency of traction treatment for leg fractures.

[0032] 2. After use, the traction device can be retracted by pulling the pull ring to slide the mounting post along its axis within the through hole, causing the locking post to disengage from the locking hole. The mounting post moves into the sliding groove, allowing it to be moved along the groove direction to retract the support rod into the support cylinder. After complete retraction, releasing the pull ring allows the locking post to re-engage into another set of locking holes under the action of the second elastic element, completing the retraction of the support rod. Then, rotating the threaded knob moves the mounting bracket along its axis, causing the fixing post to disengage from the fixing hole, thereby releasing the fixed connection between the first and second connecting brackets. The second connecting bracket can then be rotated along its connection point with the first connecting bracket to retract the mounting rod, thus completing the retraction of the traction device and reducing its space occupation when not in use. Attached Figure Description

[0033] To more clearly illustrate the specific embodiments of the present invention, the accompanying drawings used in the specific embodiments will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to scale.

[0034] Figure 1 A three-dimensional structural schematic diagram of a traction device for treating leg fractures provided by the present invention;

[0035] Figure 2 This is a schematic diagram of the disassembled structure of the support cylinder and its upper parts in a traction device for treating leg fractures according to the present invention.

[0036] Figure 3 This is a schematic diagram of the structure of the support rod and its upper parts after assembly in a traction device for treating leg fractures according to the present invention;

[0037] Figure 4 This is a schematic diagram of the structure of the first connecting frame in a leg fracture treatment traction device of the present invention;

[0038] Figure 5 This is a schematic diagram of the disassembled structure of the mounting cylinder and its upper parts in a traction device for treating leg fractures according to the present invention.

[0039] Figure 6 This is a schematic diagram of the disassembled structure of the mounting rod and its upper parts in a traction device for treating leg fractures according to the present invention.

[0040] Figure 7 This is a cross-sectional view of the worm gear sleeve in a traction device for treating leg fractures according to the present invention.

[0041] Figure label:

[0042] 101. Support cylinder; 102. Slide groove; 103. Locking hole; 104. Through groove;

[0043] 201. Support rod; 202. Through hole; 203. Mounting post; 204. Baffle; 205. Locking post; 206. Pull ring; 207. Second elastic element; 208. First pulley;

[0044] 301. First connecting bracket; 302. Fixing post; 303. Mounting bracket; 304. Threaded knob;

[0045] 401. Mounting cylinder; 402. Second connecting bracket; 403. Fixing hole; 404. Worm gear; 405. Second pulley;

[0046] 501. Worm sleeve; 502. First rack;

[0047] 601. Mounting rod; 602. Handle; 603. Mounting slot; 604. Second rack; 605. Control column; 606. First elastic element; 607. Crossbar; 608. Third pulley;

[0048] 701. Towing rope; 702. Towing frame. Detailed Implementation

[0049] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0050] Example:

[0051] like Figure 1 , 3 As shown, the present invention provides a traction device for treating leg fractures, including a support cylinder 101, a support rod 201 on the support cylinder 101, a first pulley 208 and a mounting cylinder 401 on the support rod 201, a rotatable second pulley 405 on the mounting cylinder 401, a mounting rod 601 that is slidable and rotatable along its axis passing through the mounting cylinder 401, a third pulley 608 on one end of the mounting rod 601, a traction rope 701 overlapping the first pulley 208 and the third pulley 608, one end of the traction rope 701 being fixedly connected to the second pulley 405, and the other end being provided with a traction frame 702.

[0052] When using this traction device, the support cylinder 101 is fixed in the traction area. The fixing method can be bolt fixing, clamp fixing or suction cup fixing. After the support cylinder 101 is fixed, the patient's foot is fixed on the traction frame 702, and the patient's leg is pulled by the traction rope 701 to assist the rehabilitation and surgical treatment of patients with leg fractures.

[0053] like Figure 3 , 5As shown in Figures 7 and 8, in this embodiment, a winding assembly connected to the second pulley 405 is provided on the mounting cylinder 401. The second pulley 405 is driven to rotate by the winding assembly to wind up the traction rope 701. The winding assembly includes a worm sleeve 501 whose axis is rotatable and is provided inside the mounting cylinder 401. A first rack 502 extending along its axis is provided inside the worm sleeve 501. A mounting groove 603 extending along its axis is provided on the mounting rod 601. The first rack 502 is slidably engaged in the mounting groove 603. A worm wheel 404 rotatable along its axis is provided on the mounting cylinder 401. The worm wheel 404 passes through the mounting cylinder 401 and meshes with the worm sleeve 501. The second pulley 405 is coaxially connected to the worm wheel 404. A handle 602 is provided at one end of the mounting rod 601.

[0054] The mounting rod 601 can be rotated by turning the handle 602. During rotation, the mounting rod 601 drives the worm gear sleeve 501 to rotate through the engagement of the first rack 502 and the mounting groove 603. This, in turn, drives the worm gear 404 to rotate and self-lock through the engagement of the worm gear sleeve 501 and the worm wheel 404. The rotation of the worm wheel 404 drives the second pulley 405, which is coaxially mounted thereon, to rotate. The second pulley 405 then winds up the traction rope 701, allowing for height adjustment of the traction frame 702 to suit different patients. This adjustment is convenient and quick, requiring no complicated operations and not using electronic control, resulting in more precise height control of the traction frame 702.

[0055] like Figure 1 , 3 As shown in Figures 6 and 7, in this embodiment, a locking assembly connected to the mounting rod 601 is provided on the mounting cylinder 401. The locking assembly locks or unlocks the position of the sliding mounting rod 601. The locking assembly includes a second rack 604 that is vertically movable and disposed in the mounting groove 603. The second rack 604 meshes with the first rack 502. A first elastic element 606 is disposed between the second rack 604 and the bottom surface of the mounting groove 603. A control post 605 is disposed at one end of the second rack 604. The control post 605 is vertically movable along its axis and is disposed on the handle 602 and extends outward. A crossbar 607 that can slide along its axis is provided at the bottom of the support cylinder 101. Both ends of the mounting rod 601 are rotatably disposed on the crossbar 607. A third pulley 608 is disposed at one end of the crossbar 607.

[0056] By holding the handle 602 and pressing the control column 605, the second rack 604 can be moved downwards. During the movement of the second rack 604, the first elastic element 606 is compressed and disengaged from the first rack 502. At this time, the mounting rod 601 can be moved laterally by moving the handle 602 to slide along its axis within the worm gear sleeve 501. During the sliding process, the movement of the mounting rod 601 is positioned by the cooperation between the first rack 502 and the mounting groove 603. During the movement of the mounting rod 601, the crossbar 607 slides along its axis. However, the mounting rod 601 does not rotate the crossbar 607 during rotation, thus causing the third pulley 608 to only move in translation and not rotate along the axis of the mounting rod 601. By controlling the sliding of the mounting rod 601, the position of the third pulley 608 can be adjusted, thereby adjusting the position of the traction frame 702 to accommodate patients of different heights.

[0057] like Figure 3 , 4 As shown in Figure 5, in this embodiment, a first connecting frame 301 is fixedly mounted on the support rod 201, and a second connecting frame 402 is mounted on the mounting cylinder 401. The first connecting frame 301 and the second connecting frame 402 are rotatably connected. The first connecting frame 301 is also provided with a first fixing component that connects to the second connecting frame 402. The first fixing component includes a fixing post 302 that is slidably mounted on the first connecting frame 301 along its axis. The second connecting frame 402 has a fixing hole 403. One end of the fixing post 302 passes through the fixing hole 403, and a mounting bracket 303 is provided at one end of the fixing post 302. A threaded knob 304 that is rotatable along its axis is provided on the second connecting frame 402. The threaded knob 304 passes through the mounting bracket 303 and is screwed to it.

[0058] In use, the traction device fixes the positions of the first connecting frame 301 and the second connecting frame 402 by engaging the fixing post 302 with the fixing hole 403. After use, the mounting frame 303 can be slid along the axis of the threaded knob 304 by rotating the threaded knob 304, thereby causing the fixing post 302 to move away from the fixing hole 403, thus releasing the fixed connection between the first connecting frame 301 and the second connecting frame 402. The second connecting frame 402 can then be rotated along its connection point with the first connecting frame 301 to retract the mounting rod 601, thus allowing for easy storage of the mounting rod 601.

[0059] like Figure 1 , 2As shown in Figure 3, in this embodiment, the support rod 201 is vertically and flexibly disposed within the support cylinder 101. A second fixing component for fixing the position of the support rod 201 is provided at the bottom of the support rod 201. The second fixing component includes a mounting post 203. A through hole 202 is provided at the bottom of the support rod 201. The mounting post 203 is slidably disposed within the through hole 202 along its axis. A baffle 204 and a locking post 205 are respectively provided at both ends of the mounting post 203. A pull ring 206 is provided at one end of the locking post 205. A sliding groove 102 extending along its axis is provided on the support cylinder 101. A connecting locking hole 103 is provided at both ends of the sliding groove 102. The locking post 205 is slidably engaged within the locking hole 103. A second elastic element 207 is sleeved on the mounting post 203. The two ends of the second elastic element 207 are respectively connected to the baffle 204 and the through hole 202.

[0060] Furthermore, the diameter of the locking pin 205 is larger than the diameter of the mounting pin 203, and the width of the sliding groove 102 is larger than the diameter of the mounting pin 203 but smaller than the diameter of the locking pin 205. A through groove 104 extending along its axis is provided on the support cylinder 101, and one end of the through groove 104 is an opening that connects to the outside.

[0061] When in use, the locking pin 205 is engaged in a set of locking holes 103 at the top of the traction device. Because the locking pin 205 cannot slide within the slide groove 102, the position of the support rod 201 is fixed. After use, the mounting pin 203 can be slid along its axis within the through hole 202 by pulling the pull ring 206. During this sliding process, the mounting pin 203 compresses the second elastic element 207 through the cooperation of the baffle 204 and the through hole 202, causing the mounting pin 203 to move to a position aligned with the slide groove 102. The mounting pin 203 can then slide along the slide groove 102, causing the support rod 201 to rise and fall within the support cylinder 101. During this rising and falling process, the first connecting frame 301 slides within the through groove 104, further folding the traction device and reducing its space occupation when not in use.

[0062] Specific usage and beneficial effects of the present invention:

[0063] When using this traction device, the support cylinder 101 is fixed in the area of ​​use, the patient's leg is fixed on the traction frame 702, and the patient's leg is pulled by the traction rope 701. When it is necessary to adjust the traction position before traction, the second rack 604 is disengaged from the first rack 502 by pressing the control column 605, and the mounting rod 601 is slid along the axis of the mounting cylinder 401 to adjust the position of the third pulley 608. After the adjustment is completed, the control column 605 is released, and the second rack 604 is locked back onto the first rack 502 under the action of the first elastic frame, fixing the position of the mounting rod 601 so that the position of the traction frame 702 can be adjusted according to the patient's height.

[0064] After the position of the traction frame 702 is adjusted, the mounting rod 601 can be rotated by turning the handle 602. During the rotation, the mounting rod 601 drives the worm sleeve 501 to rotate through the cooperation of the first rack 502 and the mounting groove 603. In turn, the worm sleeve 501 drives the second pulley 405 to rotate through the meshing of the worm wheel 404, so as to wind up the traction rope 701. The position and height of the traction frame 702 can be adjusted by simply operating the mounting rod 601, without the need for complicated operating procedures, thus improving the efficiency of traction in the treatment of leg fractures.

[0065] After use, the traction device can also be used to pull the pull ring 206 to drive the mounting post 203 to slide along its axis in the through hole 202, so that the locking post 205 disengages from the locking hole 103. The mounting post 203 moves into the slide groove 102, and can then be moved along the slide groove 102 to retract the support rod 201 into the support cylinder 101. After it is fully retracted, the pull ring 206 is released, and under the action of the second elastic element 207, the locking post 205 is once again locked into another set of locking holes 103, completing the retraction of the support rod 201. Then, rotate the threaded knob 304 to drive the mounting bracket 303 to move along the axis of the threaded knob 304, so that the fixing post 302 disengages from the fixing hole 403, thereby releasing the fixed connection between the first connecting bracket 301 and the second connecting bracket 402. Then, the second connecting bracket 402 can be rotated along its connection point with the first connecting bracket 301 to retract the mounting rod 601, thus completing the storage of the traction device and reducing the space occupied by the traction device when not in use.

[0066] The foregoing has shown and described the basic principles and main features of the present invention and its advantages. It will be apparent to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments.

Claims

1. A traction device for treating leg fractures, characterized in that, Including: A support cylinder (101) is provided with a support rod (201), a first pulley (208) and a mounting cylinder (401) are provided on the support rod (201), and a rotatable second pulley (405) is provided on the mounting cylinder (401). The mounting rod (601) is slidably and rotatably inserted into the mounting cylinder (401) along its axis, and a third pulley (608) is provided at one end of it. The traction rope (701) is attached to the first pulley (208) and the third pulley (608), with one end fixedly connected to the second pulley (405) and the other end provided with a traction frame (702). A winding assembly is disposed on the mounting cylinder (401) and connected to the second pulley (405) to drive the second pulley (405) to rotate and wind up the traction rope (701); and A locking assembly is disposed on the mounting cylinder (401) and connected to the mounting rod (601) to lock or unlock the position of the sliding mounting rod (601); The winding assembly includes: A worm sleeve (501) is rotatably disposed in the mounting cylinder (401) along its axis. A first rack (502) extending along its axis is disposed in the worm sleeve (501). A mounting groove (603) extending along its axis is provided on the mounting rod (601). The first rack (502) is slidably engaged in the mounting groove (603). A worm gear (404) is rotatably mounted on the mounting cylinder (401) along its axis and penetrates the mounting cylinder (401) to mesh with the worm sleeve (501). A second pulley (405) is coaxially connected to the worm gear (404). A handle (602) is provided at one end of the mounting rod (601); The locking component includes: The second rack (604) is vertically and vertically disposed in the mounting groove (603), and the second rack (604) meshes with the first rack (502); The first elastic element (606) is disposed between the second rack (604) and the bottom surface of the mounting groove (603); and A control column (605) is disposed at one end of the second rack (604) and is vertically and vertically mounted on the handle (602) and extends outward along its axis; The bottom of the support cylinder (101) is provided with a crossbar (607) that can slide along its axis. The two ends of the mounting rod (601) are rotatably mounted on the crossbar (607), and the third pulley (608) is located at one end of the crossbar (607).

2. The traction device for treating leg fractures according to claim 1, characterized in that: A first connecting frame (301) is fixedly installed on the support rod (201), and a second connecting frame (402) is installed on the mounting cylinder (401). The first connecting frame (301) and the second connecting frame (402) are rotatably connected. The first connecting frame (301) is also provided with a first fixing component that is connected to the second connecting frame (402).

3. A traction device for treating leg fractures according to claim 2, characterized in that, The first fixing component includes: A fixing post (302) is slidably mounted on the first connecting frame (301) along its axis. A fixing hole (403) is provided on the second connecting frame (402), and one end of the fixing post (302) is inserted into the fixing hole (403). Mounting bracket (303) is disposed at one end of the fixing post (302); and A threaded knob (304) is rotatably mounted on the second connecting bracket (402) at one end along its axis. The threaded knob (304) passes through the mounting bracket (303) and is screwed to it.

4. The traction device for treating leg fractures according to claim 1, characterized in that: The support rod (201) is vertically and vertically disposed inside the support cylinder (101), and a second fixing component is provided at the bottom of the support rod (201) for fixing the position of the support rod (201).

5. A traction device for treating leg fractures according to claim 4, characterized in that: The second fixing component includes a mounting post (203), a through hole (202) at the bottom of the support rod (201), the mounting post (203) being slidably disposed in the through hole (202) along its axis, a baffle (204) and a locking post (205) being respectively disposed at both ends of the mounting post (203), a pull ring (206) being disposed at one end of the locking post (205), a sliding groove (102) extending along its axis being provided on the support cylinder (101), a connecting locking hole (103) being provided at both ends of the sliding groove (102), the locking post (205) being slidably locked in the locking hole (103), and a second elastic element (207) being sleeved on the mounting post (203), the two ends of the second elastic element (207) being connected to the baffle (204) and the through hole (202) respectively.

6. A traction device for treating leg fractures according to claim 5, characterized in that: The diameter of the locking post (205) is greater than the diameter of the mounting post (203), and the width of the groove (102) is greater than the diameter of the mounting post (203) and less than the diameter of the locking post (205).

7. A traction device for treating leg fractures according to claim 5, characterized in that: The support cylinder (101) has a through groove (104) extending along its axis, and one end of the through groove (104) is an opening that connects to the outside.

Images