Adjustable fixing device for traumatic orthopedics department

Abstract

The invention provides an adjustable fixing device for traumatic orthopedics. The adjustable fixing device comprises a base unit, a bearing unit, a supporting unit, an adjusting unit and a traction unit. The base unit is fixed to the nursing bed through the hoop, and the slewing bearing drives the bearing plate to rotate and align. The supporting unit is of a flexible supporting cloth and vertical plate structure, and the legs of a patient are clamped in a self-adaptive mode under the gravity effect. The adjusting unit realizes multi-dimensional adjustment of the height, the inclination angle and the width through a worm and gear mechanism and an angle adjusting screw rod; the traction unit controls the traction angle and force through the gear hole and the balancing weight. The device has the advantages of flexible fixation, accurate adjustment, stability, reliability and the like, and is suitable for orthopedic postoperative fixation and traction treatment.

Description

Technical Field

[0001] The invention relates to the technical field of medical appliances, in particular to an adjustable fixing device for trauma orthopedics. Background Art

[0002] In trauma orthopedic treatment, postoperative limb fixation and traction are key links to restore bone alignment and prevent secondary injuries. Currently, commonly used fixation devices in clinical practice mainly include rigid brackets, plaster supports, elastic bandages, etc., but these technologies have the following significant defects: 1. Inconvenient adjustment: Traditional devices are difficult to flexibly adjust the support height, inclination angle and width, and cannot adapt to the needs of different patient sizes or different treatment stages. 2. Poor comfort: The patient's legs are easily compressed when fixed for a long time, and direct contact between the support components and the skin may cause friction damage. 3. Insufficient fixation stability: The device is easily displaced due to patient movement or external force collision, affecting the traction treatment effect. 4. Hygiene hazards: Parts that directly contact the skin, such as support cloth, are difficult to disassemble and replace, and are prone to breeding bacteria. Summary of the invention

[0003] In view of the above-mentioned technical deficiencies, the purpose of the present invention is to provide an adjustable fixation device for trauma orthopedics to improve the comfort, stability and safety of orthopedic fixation and traction.

[0004] To achieve the above object, the present invention adopts the following technical solution: An adjustable fixation device for trauma orthopedics, placed on a nursing bed, comprising: A base unit, placed on and connected to the nursing bed; The bearing unit is rotatably mounted on the base unit and serves as the main bearing component of the device; A support unit, mounted on the carrying unit, for supporting the thigh and calf of the patient; An adjusting unit, the bottom of which is arranged on the bearing unit and the upper part of which is connected to the supporting unit, and is used to adjust the height and tilt angle of the supporting unit; The traction unit is installed on the base unit, one end of which is connected to the steel nails on the patient's legs and is used to apply traction to the patient's legs.

[0005] Preferably, the base unit includes a base plate, a first pull rod, a first sleeve, a bent rod and a clamp; one end of the first pull rod is hinged on the base plate, and the other end can be slidably inserted in the first sleeve; one end of the bent rod is fixedly connected to the first sleeve, and the other end is fixed on the clamp; a first locking screw is installed on the first sleeve, and the front end of the first locking screw abuts against the first pull rod; the clamp is used to be sleeved and fixed on the fence of the nursing bed.

[0006] Preferably, the bearing unit includes a bearing plate, a column and a slewing bearing; the bearing plate is arranged in parallel and spaced relation on the upper part of the base plate; the column and the slewing bearing are placed between the bearing plate and the base plate; the slewing bearing is installed on the upper end surface of the base plate, the lower end of the column is installed on the slewing bearing, and the upper end is fixed to the bottom of the bearing plate.

[0007] Preferably, the support unit comprises a thigh support assembly and a calf support assembly; The calf support assembly comprises a first guide rod, a second guide rod, a first support cloth and two symmetrically arranged first support frames; the first guide rod and the second guide rod are arranged in parallel and spaced apart; the first support frame comprises a first support rod, a first vertical plate, two first sliding sleeves and two first rings; the first support rod is placed between the first guide rod and the second guide rod; one of the first sliding sleeves can be slidably sleeved on the first guide rod, and the other first sliding sleeve can be slidably sleeved on the second guide rod; the two first rings are symmetrically fixed at both ends of the first support rod, and the first rings can be rotatably sleeved on the first sliding sleeve; the first vertical plate is fixed on the first support rod; the two ends of the first support cloth are respectively fixed on the two first vertical plates; The thigh support assembly includes a third guide rod, a second support cloth and two symmetrically arranged second support frames; the third guide rod is arranged parallel to the second guide rod and is fixed on the bearing unit; the second support frame includes a second support rod, a second vertical plate, a second sliding sleeve and two second rings; the second support rod is placed between the second guide rod and the third guide rod; the second sliding sleeve is slidably mounted on the third guide rod; the two second rings are symmetrically fixed at both ends of the second support rod, one of the second rings is rotatably mounted on the second sliding sleeve, and the other second ring is rotatably mounted on the first sliding sleeve; the second vertical plate is fixed on the second support rod; the two ends of the second support cloth are respectively fixed on the two second vertical plates.

[0008] Preferably, the adjustment unit comprises a linear motion platform, a rotating shaft, two symmetrically arranged angle adjustment components and two symmetrically arranged width adjustment components; the linear motion platform is mounted on the bearing unit; the rotating shaft is arranged in parallel and spaced apart below the first support rod; The angle adjustment assembly comprises a bearing seat, an angle adjustment screw, an angle adjustment nut and an angle adjustment sleeve; the rotating shaft is rotatably mounted on the bearing seat; the lower end of the angle adjustment sleeve is hingedly mounted on the linear motion platform; one end of the angle adjustment screw is hingedly mounted on the bearing seat, and the other end is inserted into the angle adjustment sleeve; the angle adjustment nut is sleeved and mounted on the angle adjustment screw, and the angle adjustment nut is threadedly matched with the angle adjustment screw; one end of the angle adjustment nut abuts against the angle adjustment sleeve; The width adjustment assembly includes a connecting seat, a worm sleeve, a worm wheel, a width adjustment screw, two threaded sleeves and two transmission plates; one end of the rotating shaft is rotatably mounted on the connecting seat; the width adjustment screw is rotatably mounted on the connecting seat; the width adjustment screw is arranged in parallel and spaced apart from the second guide rod; threads of opposite rotation directions are arranged at both ends of the width adjustment screw; the worm sleeve is fixed on the rotating shaft, and the worm wheel is fixed on the width adjustment screw and meshes with the worm sleeve for transmission; the first guide rod and the second guide rod are respectively fixed on the two connecting seats; the two threaded sleeves are symmetrically sleeved on the two ends of the width adjustment screw and cooperate with the threads of the width adjustment screw; the two transmission plates are symmetrically arranged on both sides of the connecting seat; the lower end of the transmission plate is fixed on the threaded sleeve; a circular hole is arranged on the upper part of the transmission plate; the first guide rod and the second guide rod respectively penetrate the circular holes of the transmission plates of the two width adjustment assemblies, and the diameter of the circular hole is larger than the diameter of the first guide rod and the second guide rod; one side of the transmission plate is fixedly connected to the first sliding sleeve.

[0009] Preferably, the linear motion platform includes an adjusting guide rod, an adjusting slide, and a second locking screw; the adjusting guide rod is fixed on the bearing unit; the axis extension line of the adjusting guide rod is perpendicular to the axis extension line of the third guide rod in space; the adjusting slide is slidably mounted on the adjusting guide rod; the second locking screw is mounted on the adjusting slide, and the front end of the second locking screw abuts against the adjusting guide rod; the lower end of the angle adjustment sleeve is hingedly mounted on the adjusting slide.

[0010] Preferably, the traction unit includes a hook, a traction line, a cross bar, a first roller, a second roller, a counterweight and two symmetrically arranged adjustment frames; the adjustment frame is vertically fixed to the base plate; the hook is fixed to one end of the traction line; the counterweight is installed at the other end of the traction line; a plurality of gear holes are evenly spaced from top to bottom on the adjustment frame; the two ends of the cross bar are inserted into the corresponding gear holes on the two adjustment frames; the first roller is installed on the cross bar; the second roller is installed on the bent rod; the middle section of the traction line is overlapped on the first roller and the second roller.

[0011] Preferably, a rocker is fixedly provided on one end of the rotating shaft away from the third guide rod.

[0012] Preferably, a first elongated hole is provided on the first vertical plate; one end of the first supporting cloth is inserted into the first elongated hole; a plug strip is clamped in the first elongated hole to fix the end of the first supporting cloth in the first elongated hole.

[0013] Preferably, a second elongated hole is provided on the second vertical plate; one end of the second supporting cloth is inserted into the second elongated hole; a plug strip is clamped in the second elongated hole to fix the end of the second supporting cloth in the second elongated hole.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. Multi-parameter linkage adjustment function: By driving the worm gear mechanism with a single rocker, the spacing (width) of the support frames on both sides can be adjusted synchronously, avoiding the cumbersome operation of independent adjustment of both sides required by traditional devices.

[0015] The angle adjustment screw and nut cooperate to lock the position after adjusting the tilt angle to prevent angle deviation due to force during traction.

[0016] The slewing bearing enables the load-bearing unit to rotate as a whole, directly adapting to the initial positioning angle of the patient's legs and reducing the secondary traction on the injured limb caused by forced positioning.

[0017] 2. Flexible fixation of adaptive leg shape: After the patient's legs are placed on the support cloth, the vertical panels on both sides automatically converge toward the center under the action of gravity, forming a wrap-type fixation to avoid local pressure on the skin caused by the hard support.

[0018] The sliding fit between the sleeve and the guide rod allows the support frame to float slightly with leg swelling or changes in body position, reducing the risk of pressure sores caused by fixed size of traditional rigid supports.

[0019] 3. Improved device stability: The clamp bridges the edge of the nursing bed through a bent rod to form multi-point rigid fixation, significantly reducing the risk of device displacement.

[0020] The self-locking feature of the worm gear drive automatically maintains the width parameter after adjustment, without the need for additional locking parts.

[0021] The clearance between the circular hole of the transmission plate and the guide rod limits the rotation of the sliding sleeve, ensuring that the support frame moves only in a predetermined direction.

[0022] 4. Convenience of hygienic maintenance: The support cloth is fixed by plug strips and can be quickly disassembled and replaced without tools, making it easy to clean and disinfect regularly.

[0023] The split design allows the thigh or calf support cloth to be replaced separately, reducing maintenance costs.

[0024] 5. Visual adjustment of traction direction: The crossbar is inserted into the gear holes at different heights to directly observe the traction angle, avoiding traction direction deviation caused by visual errors.

[0025] The roller guides the direction of the traction line and reduces the loss of traction caused by friction between the rope and the device.

[0026] 6. Operational efficiency optimization: The support width can be adjusted by operating the joystick with one hand, simplifying the adjustment process of traditional tools.

[0027] The sliding design of the linear motion platform makes height adjustment smoother and reduces the physical exertion of medical staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the use of the present invention; Figure 2 It is a structural schematic diagram of the present invention; Figure 3 It is a three-dimensional structural diagram of the present invention; Figure 4 It is a schematic diagram of the structural relationship in the present invention; Figure 5 for Figure 4 A partial enlarged view of the middle A; Figure 6 It is a structural schematic diagram of the connecting socket in the present invention.

[0029] in: 1. Base unit; 10. First pull rod; 11. Bottom plate; 12. Hoop; 13. Bend rod; 14. First sleeve; 15. First locking screw; 2. Nursing bed; 3. Load-bearing unit; 31. Load-bearing plate; 32. Slewing bearing; 4. Traction unit; 41. Adjustment frame; 42. Shift hole; 43. Counterweight; 44. Traction line; 45. Second roller; 46. First roller; 47. Crossbar; 48. Hook; 5. Adjustment unit; 51. Angle adjustment assembly; 511. Angle adjustment sleeve; 512. Angle adjustment nut; 513. Angle adjustment screw; 514. Bearing seat; 52. Width adjustment assembly; 521. Connecting seat ; 522, worm gear sleeve; 523, transmission plate; 524, screw sleeve; 525, width adjustment screw; 526, second sleeve; 527, first sleeve; 528, first sleeve; 529, first support rod; 5210, first vertical plate; 5211, first support cloth; 5212, worm gear; 5213, plug strip; 53, rotating shaft; 6, support unit; 61, calf support assembly; 611, second guide rod; 612, first guide rod; 62, thigh support assembly; 621, third guide rod; 622, second vertical plate; 623, second support rod; 624, second support cloth; 63, adjusting slide plate; 64, adjusting guide rod. DETAILED DESCRIPTION

[0030] The present invention will be further described below in conjunction with the accompanying drawings.

[0031] like Figures 1 to 6 As shown, an adjustable fixation device for trauma orthopedics is placed on a nursing bed and comprises: The base unit 1 is placed on the nursing bed 2 and connected to the nursing bed 2. Through the connection between the base unit 1 and the nursing bed 2, the device is stably placed on the nursing bed 2 to prevent the device from being accidentally touched and shifted during use; The bearing unit 3 is rotatably mounted on the base unit 1 and serves as the main bearing component of the device; A support unit 6, mounted on the carrying unit 3, for supporting the thigh and calf of the patient; An adjusting unit 5, the bottom of which is arranged on the carrying unit 3 and the upper part of which is connected to the supporting unit 6, and is used to adjust the height and the tilt angle of the supporting unit 6; The traction unit 4 is installed on the base unit 1, one end of which is connected to the steel nails on the patient's legs, and is used to apply traction to the patient's legs.

[0032] Place the device on the side of the nursing bed 2 corresponding to the patient's injured leg, and fix the base unit 1 to the nursing bed 2; rotate the load-bearing unit 3 to make the device more suitable for the patient's leg position; adjust the height and tilt angle of the support unit 6 through the adjustment unit 5, so that the support unit 6 can support and fix the patient's leg in a more suitable state; connect the steel nails on the patient's leg through the traction unit 4 to traction and fix the patient's short limb.

[0033] In this embodiment, the base unit 1 includes a base plate 11, a first pull rod 10, a first sleeve 14, a bent rod 13 and a clamp 12; one end of the first pull rod is hinged on the base plate 11, and the other end is slidably inserted in the first sleeve 14; one end of the bent rod 13 is fixedly connected to the first sleeve 14, and the other end is fixed to the clamp 12; a first locking screw 15 is installed on the first sleeve 14, and the front end of the first locking screw 15 abuts on the first pull rod; the clamp 12 is used to be sleeved and fixed on the fence of the nursing bed 2. The bent rod 13 is used to cross the edge baffle of the nursing bed 2 so that the clamp 12 can be fastened and fixed on the fence of the nursing bed 2; loosen the first locking screw 15 to adjust the length of the first pull rod extending out of the first sleeve 14, so as to adjust the distance between the base plate 11 and the patient without affecting the connection between the clamp 12 and the fence.

[0034] In this embodiment, the bearing unit 3 includes a bearing plate 31, a column and a slewing bearing 32; the bearing plate 31 is arranged in parallel and spaced apart on the upper part of the bottom plate 11; the column and the slewing bearing 32 are placed between the bearing plate 31 and the bottom plate 11; the slewing bearing 32 is installed on the upper end surface of the bottom plate 11, the lower end of the column is installed on the slewing bearing 32, and the upper end is fixed to the bottom of the bearing plate 31. The cooperation between the slewing bearing 32 and the column enables the bearing plate 31 to rotate within a certain angle, so that the support unit 6 and the adjustment unit 5 arranged on the bearing plate 31 face the patient at a more suitable angle.

[0035] In this embodiment, the support unit 6 includes a thigh support component 62 and a calf support component 61; the thigh support component 62 is used to support the patient's thigh, and the calf support component 61 is used to support the patient's calf; The calf support assembly 61 includes a first guide rod 612, a second guide rod 611, a first support cloth 5211 and two symmetrically arranged first support frames; the first guide rod 612 and the second guide rod 611 are arranged in parallel and spaced apart; the first support frame includes a first support rod 529, a first vertical plate 5210, two first sliding sleeves 527 and two first rings 528; the first support rod 529 is placed between the first guide rod 612 and the second guide rod 611; one of the first sliding sleeves 527 is slidably mounted on the first guide rod 612, and the other first sliding sleeve 527 is slidably mounted on the second guide rod 611; the two first rings 528 are symmetrically fixed at both ends of the first support rod 529, and the first rings 528 are rotatably mounted on the first guide rod 612. Installed on the first sliding sleeve 527; the first vertical plate 5210 is fixed on the first support rod 529; the two ends of the first support cloth 5211 are respectively fixed on the two first vertical plates 5210; the patient's calf is placed on the top of the first support cloth 5211; the setting of the first vertical plate 5210 makes the first support cloth 5211 higher than the first guide rod 612 and the second guide rod 611 in the vertical direction, preventing the lower part of the patient's calf from resting on the first guide rod 612 and the second guide rod 611 and causing discomfort; after the patient's calf is placed on the first support cloth 5211, the first support cloth 5211 is pressed downward under the action of gravity, so that the first vertical plates 5210 on both sides are close to each other, and the first vertical plates 5210 are clamped on both sides of the patient's calf to support and fix the calf; The thigh support assembly 62 includes a third guide rod 621, a second support cloth 624 and two symmetrically arranged second support frames; the third guide rod 621 is arranged parallel to the second guide rod 611 and is fixed on the load-bearing unit 3; the second support frame includes a second support rod 623, a second vertical plate 622, a second sliding sleeve and two second rings 526; the second support rod 623 is placed between the second guide rod 611 and the third guide rod 621; the second sliding sleeve is slidably mounted on the third guide rod 621; the two second rings 526 are symmetrically fixed at both ends of the second support rod 623, one of the second rings 526 is rotatably mounted on the second sliding sleeve, and the other second ring 526 is rotatably mounted on the first sliding sleeve 527; the second vertical plate 622 is fixed on the second support rod 623; the two ends of the second support cloth 624 are respectively fixed on the two second vertical plates 622. The second supporting cloth 624 is fitted to the patient's thigh in an oblique state. The second vertical plate 622 is arranged so that the second supporting cloth 624 is higher than the second guide rod 611 and the third guide rod 621 in the vertical direction, so as to prevent the lower part of the patient's calf from resting on the second guide rod 611 and the third guide rod 621 and causing discomfort. After the patient's calf is placed on the second supporting cloth 624, the second supporting cloth 624 is pressed downward by gravity, so that the second vertical plates 622 on both sides are close to each other, and the second vertical plates 622 are clamped on both sides of the patient's calf to support and fix the calf.

[0036] In this embodiment, the adjustment unit 5 includes a linear motion platform, a rotating shaft 53, two symmetrically arranged angle adjustment components 51 and two symmetrically arranged width adjustment components 52; the linear motion platform is mounted on the bearing unit 3; the rotating shaft 53 is arranged in parallel and spaced apart below the first support rod 529; The angle adjustment assembly 51 includes a bearing seat 514, an angle adjustment screw 513, an angle adjustment nut 512, and an angle adjustment sleeve 511; the rotating shaft 53 is rotatably mounted on the bearing seat 514; the lower end of the angle adjustment sleeve 511 is hingedly mounted on the linear motion platform; one end of the angle adjustment screw 513 is hingedly mounted on the bearing seat 514, and the other end is inserted into the angle adjustment sleeve 511; the angle adjustment nut 512 is sleeved and mounted on the angle adjustment screw 513, and the angle adjustment nut 512 and the angle adjustment screw 513 are threadedly matched; one end of the angle adjustment nut 512 abuts against the angle adjustment sleeve 511; The calf support assembly 61 is pushed toward the thigh support assembly 62 through the linear motion platform, so that the height of the second guide rod 611 rises, and the angle adjustment screw 513 of the angle adjustment assembly 51 corresponding to the second guide rod 611 below is pulled out of the angle adjustment sleeve 511 for a section, and the angle adjustment nut 512 is rotated to abut against the angle adjustment sleeve 511 to fix the length of the angle adjustment screw 513 extending out of the angle adjustment sleeve 511, and fix the state of the linear motion platform and the inclination state of the first support cloth 5211 and the second support cloth 624; similarly, by rotating the angle adjustment nut 512 to adjust the length of the angle adjustment screw 513 extending out of the angle adjustment sleeve 511, the inclination angle of the calf support assembly 61, the inclination angle of the thigh support assembly 62, and the position state of the linear motion platform can be adjusted; and adjusting the two angle adjustment assemblies 51 at the same time can make the height of the first support cloth 5211 in a horizontal state.

[0037] The width adjustment assembly 52 includes a connecting seat 521, a worm sleeve 522, a worm wheel 5212, a width adjustment screw 525, two threaded sleeves and two transmission plates 523; one end of the rotating shaft 53 is rotatably mounted on the connecting seat 521; the width adjustment screw 525 is rotatably mounted on the connecting seat 521; the width adjustment screw 525 is arranged parallel to and spaced from the second guide rod 611; both ends of the width adjustment screw 525 are provided with threads of opposite rotation directions; the worm sleeve 522 is fixed on the rotating shaft 53, and the worm wheel 5212 is fixed on the width adjustment screw 525 and meshes with the worm sleeve 522 for transmission; the first guide rod 612, the second guide rod 611, the second guide rod 612 ... The guide rods 611 are respectively fixed on the two connecting seats 521; the two threaded sleeves are symmetrically sleeved on the two ends of the width adjustment screw 525 and threadedly matched with the width adjustment screw 525; the two transmission plates 523 are symmetrically arranged on both sides of the connecting seat 521; the lower end of the transmission plate 523 is fixed on the threaded sleeve; the upper part of the transmission plate 523 is provided with a round hole; the first guide rod 612 and the second guide rod 611 are respectively penetrated through the round holes of the transmission plates 523 of the two width adjustment components 52, and the diameter of the round hole is larger than the diameter of the first guide rod 612 and the second guide rod 611; one side of the transmission plate 523 is fixedly connected to the first sliding sleeve 527. When the rotating shaft 53 is rotated, the width adjustment screw 525 is driven to rotate through the cooperation of the worm sleeve 522 and the worm wheel 5212. When the width adjustment screw 525 rotates, the threads at both ends of the width adjustment screw 525 rotate in opposite directions, which can drive the two screw sleeves 524 to move in opposite directions, so that the two transmission plates 523 are close to or away from each other. When the two transmission plates 523 are close to each other, they drive the first sliding sleeve 527 to be close to each other, and the second sliding sleeve to be close to each other, so that the two first vertical plates 5210 are close to each other, and the two second vertical plates 622 are close to each other, so as to adjust the width of the calf support component 61 to the thigh support component 62, and adjust the tension state of the first support cloth 5211 and the second support cloth 624. When used in conjunction with the angle adjustment component 51, it can meet the different leg support postures of the patient, so that traction is more convenient and comfortable.

[0038] In this embodiment, the linear motion platform includes an adjustment guide rod 64, an adjustment slide 63, and a second locking screw; the adjustment guide rod 64 is fixed on the bearing unit 3; the axis extension line of the adjustment guide rod 64 is perpendicular to the axis extension line of the third guide rod 621 in space; the adjustment slide 63 is slidably mounted on the adjustment guide rod 64; the second locking screw is mounted on the adjustment slide 63, and the front end of the second locking screw abuts against the adjustment guide rod 64; the lower end of the angle adjustment sleeve 511 is hingedly mounted on the adjustment slide 63. Two adjustment guide rods 64 are configured, symmetrically arranged on both sides of the adjustment slide 63; the position of the adjustment slide 63 on the adjustment guide rod 64 can be adjusted by loosening the second locking screw, and then tightening and fixing it.

[0039] In this embodiment, the traction unit 4 includes a hook 48, a traction line 44, a cross bar 47, a first roller 46, a second roller 45, a counterweight 43 and two symmetrically arranged adjustment frames 41; the adjustment frame 41 is vertically fixed on the bottom plate 11; the hook 48 is fixed to one end of the traction line 44; the counterweight 43 is installed at the other end of the traction line 44; a plurality of gear holes 42 are evenly spaced from top to bottom on the adjustment frame 41; the two ends of the cross bar 47 are inserted into the corresponding gear holes 42 on the two adjustment frames 41; the first roller 46 is installed on the cross bar 47; the second roller 45 is installed on the curved rod 13; the middle section of the traction line 44 is overlapped on the first roller 46 and the second roller 45. The hook 48 is used to hook the two ends of the steel needle on the patient's leg; the cross bar 47 is inserted into the gear holes 42 at different heights to adjust the angle between the traction line 44 and the steel needle, so that the traction angle is more suitable for the patient.

[0040] In this embodiment, a rocker is fixedly provided on one end of the rotating shaft 53 away from the third guide rod 621 to facilitate the rotation of the rotating shaft 53 .

[0041] In this embodiment, a first elongated hole is provided on the first vertical plate 5210; one end of the first supporting cloth 5211 is inserted into the first elongated hole; a plugging strip 5213 is provided in the first elongated hole to fix the end of the first supporting cloth 5211 in the first elongated hole. The plugging strip 5213 can be pulled out from the first elongated hole to remove the first supporting cloth 5211 and replace it with a new one to prevent bacteria from growing on the first supporting cloth 5211.

[0042] In this embodiment, a second elongated hole is provided on the second vertical plate 622; one end of the second supporting cloth 624 is inserted into the second elongated hole; a plugging strip 5213 is provided in the second elongated hole to fix the end of the second supporting cloth 624 in the second elongated hole. The plugging strip 5213 can be pulled out from the second elongated hole to remove the second supporting cloth 624 and replace it with a new one to prevent bacteria from growing on the second supporting cloth 624.

[0043] How it works The device achieves adjustable fixation and traction of the patient's legs by: Base fixing: The clamp 12 clamps the fence of the nursing bed 2, and the first pull rod and the bent rod 13 adjust the position of the bottom plate 11 to ensure that the device is stable and does not deviate.

[0044] Load adjustment: The slewing bearing 32 drives the carrying plate 31 to rotate, so as to adjust the initial alignment angle between the supporting unit 6 and the patient's leg.

[0045] Support and angle adjustment: Height and tilt angle adjustment: The linear motion platform pushes the calf support assembly 61, and cooperates with the angle adjustment screw 513 and the nut to control the tilt angle of the support cloth; rotating the angle adjustment nut 512 can lock the extension length of the screw and fix the support state.

[0046] Width adjustment: The rocker drives the worm gear 5212 worm mechanism, which drives the width adjustment screw 525 to move in both directions, so that the sliding sleeves on both sides are synchronously moved closer or farther away, and the width of the support cloth is adjusted to adapt to the patient's leg size.

[0047] Flexible support: The patient's legs are placed on the first support cloth 5211 (calf) and the second support cloth 624 (thigh). The support cloth is pressed down by gravity, and the vertical plates on both sides automatically clamp the legs to achieve flexible fixation.

[0048] Traction Control: The hook 48 is connected to the leg steel nail, and the counterweight 43 applies traction through the traction line 44; the cross bar 47 is inserted into different gear holes 42 to adjust the traction angle.

[0049] Hygiene maintenance: The supporting cloth is fixed to the plug strip 5213 through the long holes and can be quickly disassembled and replaced to avoid bacterial growth.

Claims

1. An adjustable fixation device for trauma orthopedics, placed on a nursing bed, characterized in that: include: A base unit (1) is placed on the nursing bed (2) and connected to the nursing bed (2); A bearing unit (3) is rotatably mounted on the base unit (1) and serves as a main bearing component of the device; A support unit (6), mounted on the carrying unit (3), and used for supporting the thigh and calf of the patient; An adjustment unit (5), the bottom of which is arranged on the bearing unit (3) and the top of which is connected to the support unit (6), and is used to adjust the height and tilt angle of the support unit (6); The traction unit (4) is mounted on the base unit (1), one end of which is connected to the steel nail on the patient's leg and is used to apply traction force to the patient's leg.

2. An adjustable fixation device for trauma orthopedics as claimed in claim 1, characterized in that: The base unit (1) comprises a base plate (11), a first pull rod, a first sleeve (14), a bent rod (13) and a clamp (12); one end of the first pull rod is hinged on the base plate (11), and the other end is slidably inserted into the first sleeve (14); one end of the bent rod (13) is fixedly connected to the first sleeve (14), and the other end is fixed to the clamp (12); a first locking screw (15) is installed on the first sleeve (14), and the front end of the first locking screw (15) abuts against the first pull rod; the clamp (12) is used to be sleeved and fixed on the fence of the nursing bed (2).

3. An adjustable fixation device for trauma orthopedics as claimed in claim 2, characterized in that: The bearing unit (3) comprises a bearing plate (31), a column and a slewing bearing (32); the bearing plate (31) is arranged in parallel and spaced relation on the upper part of the base plate (11); the column and the slewing bearing (32) are arranged between the bearing plate (31) and the base plate (11); the slewing bearing (32) is mounted on the upper end surface of the base plate (11); the lower end of the column is mounted on the slewing bearing (32) and the upper end is fixed to the bottom of the bearing plate (31).

4. The adjustable fixation device for trauma orthopedics as claimed in claim 1, characterized in that: The support unit (6) comprises a thigh support component (62) and a calf support component (61); The calf support assembly (61) comprises a first guide rod (612), a second guide rod (611), a first support cloth (5211) and two symmetrically arranged first support frames; the first guide rod (612) and the second guide rod (611) are arranged in parallel and spaced apart; the first support frame comprises a first support rod (529), a first vertical plate (5210), two first sliding sleeves (527) and two first sleeve rings (528); the first support rod (529) is placed between the first guide rod (612) and the second guide rod (611); one of the first support rods (529) is provided between the first guide rod (612) and the second guide rod (611); A first sliding sleeve (527) is slidably mounted on the first guide rod (612), and another first sliding sleeve (527) is slidably mounted on the second guide rod (611); two first rings (528) are symmetrically fixed at two ends of the first support rod (529), and the first rings (528) are rotatably mounted on the first sliding sleeve (527); the first vertical plate (5210) is fixed on the first support rod (529); and the two ends of the first supporting cloth (5211) are respectively fixed on the two first vertical plates (5210); The thigh support assembly (62) comprises a third guide rod (621), a second support cloth (624) and two symmetrically arranged second support frames; the third guide rod (621) is arranged in parallel and spaced apart from the second guide rod (611) and is fixed on the bearing unit (3); the second support frame comprises a second support rod (623), a second vertical plate (622), a second sliding sleeve and two second rings (526); the second support rod (623) is placed between the second guide rod (611) and the third guide rod (621). The second slide sleeve is slidably mounted on the third guide rod (621); two second rings (526) are symmetrically fixed at both ends of the second support rod (623), one of the second rings (526) is rotatably mounted on the second slide sleeve, and the other second ring (526) is rotatably mounted on the first slide sleeve (527); the second vertical plate (622) is fixed on the second support rod (623); and the two ends of the second support cloth (624) are respectively fixed on the two second vertical plates (622).

5. The adjustable fixation device for trauma orthopedics as claimed in claim 4, characterized in that: The adjustment unit (5) comprises a linear motion platform, a rotating shaft (53), two symmetrically arranged angle adjustment components (51) and two symmetrically arranged width adjustment components (52); the linear motion platform is mounted on the bearing unit (3); the rotating shaft (53) is arranged in parallel and at intervals below the first support rod (529); The angle adjustment component (51) comprises a bearing seat (514), an angle adjustment screw (513), an angle adjustment nut (512), and an angle adjustment sleeve (511); the rotating shaft (53) is rotatably mounted on the bearing seat (514); the lower end of the angle adjustment sleeve (511) is hingedly mounted on the linear motion platform; one end of the angle adjustment screw (513) is hingedly mounted on the bearing seat (514), and the other end is inserted into the angle adjustment sleeve (511); the angle adjustment nut (512) is sleeved and mounted on the angle adjustment screw (513), and the angle adjustment nut (512) and the angle adjustment screw (513) are threadedly matched; one end of the angle adjustment nut (512) abuts against the angle adjustment sleeve (511); The width adjustment assembly (52) comprises a connecting seat (521), a worm sleeve (522), a worm wheel (5212), a width adjustment screw (525), two threaded sleeves and two transmission plates (523); one end of the rotating shaft (53) is rotatably mounted on the connecting seat (521); the width adjustment screw (525) is rotatably mounted on the connecting seat (521); the width adjustment screw (525) is arranged in parallel and spaced apart from the second guide rod (611); threads of opposite rotation directions are arranged at both ends of the width adjustment screw (525); the worm sleeve (522) is fixed on the rotating shaft (53); the worm wheel (5212) is fixed on the width adjustment screw (525) and meshes with the worm sleeve (522) for transmission; the first guide rod (611) 2) The second guide rod (611) is fixed on the two connecting seats (521) respectively; the two threaded sleeves are symmetrically sleeved on the two ends of the width adjustment screw (525) and threadedly matched with the width adjustment screw (525); the two transmission plates (523) are symmetrically arranged on both sides of the connecting seat (521); the lower end of the transmission plate (523) is fixed on the threaded sleeve; the upper part of the transmission plate (523) is provided with a circular hole; the first guide rod (612) and the second guide rod (611) are respectively penetrated through the circular holes of the transmission plates (523) of the two width adjustment components (52), and the diameter of the circular hole is larger than the diameter of the first guide rod (612) and the second guide rod (611); one side of the transmission plate (523) is fixedly connected to the first sliding sleeve (527).

6. The adjustable fixation device for trauma orthopedics as claimed in claim 5, characterized in that: The linear motion platform comprises an adjusting guide rod (64), an adjusting slide plate (63), and a second locking screw; the adjusting guide rod (64) is fixed on the bearing unit (3); the extended axis of the adjusting guide rod (64) is perpendicular to the extended axis of the third guide rod (621) in space; the adjusting slide plate (63) is slidably mounted on the adjusting guide rod (64); the second locking screw is mounted on the adjusting slide plate (63), and the front end of the second locking screw abuts against the adjusting guide rod (64); the lower end of the angle adjusting sleeve (511) is hingedly mounted on the adjusting slide plate (63).

7. The adjustable fixation device for trauma orthopedics as claimed in claim 2, characterized in that: The traction unit (4) comprises a hook (48), a traction line (44), a cross bar (47), a first roller (46), a second roller (45), a counterweight (43) and two symmetrically arranged adjustment frames (41); the adjustment frame (41) is vertically fixed on the base plate (11); the hook (48) is fixed on one end of the traction line (44); the counterweight (43) is installed on the other end of the traction line (44); a plurality of gear holes (42) are evenly spaced from top to bottom on the adjustment frame (41); the two ends of the cross bar (47) are inserted into the corresponding gear holes (42) on the two adjustment frames (41); the first roller (46) is installed on the cross bar (47); the second roller (45) is installed on the bent rod (13); and the middle section of the traction line (44) is overlapped on the first roller (46) and the second roller (45).

8. The adjustable fixation device for trauma orthopedics as claimed in claim 5, characterized in that: A rocker is fixedly provided on one end of the rotating shaft (53) away from the third guide rod (621).

9. The adjustable fixation device for trauma orthopedics as claimed in claim 4, characterized in that: The first vertical plate (5210) is provided with a first elongated hole; one end of the first supporting cloth (5211) is inserted into the first elongated hole; a plug strip (5213) is clamped in the first elongated hole to fix the end of the first supporting cloth (5211) in the first elongated hole.

10. The adjustable fixation device for trauma orthopedics as claimed in claim 4, characterized in that: The second vertical plate (622) is provided with a second elongated hole; one end of the second supporting cloth (624) is inserted into the second elongated hole; a plug strip (5213) is clamped in the second elongated hole to fix the end of the second supporting cloth (624) in the second elongated hole.

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