Anti-falling fixing device used after hip replacement

Abstract

The utility model relates to the technical field of medical auxiliary devices, in particular to a hip replacement postoperative anti-falling fixing device which comprises a waist strap, a limiting mechanism and a tightening mechanism, the limiting mechanism comprises limiting boxes, a winding shaft, a ratchet wheel, a clockwork spring and a fixing assembly, the limiting boxes are fixedly installed on the two sides of the waist strap, and the winding shaft is fixedly installed on the limiting boxes; the rolling shaft is rotationally connected to the interior of the limiting box, the ratchet wheel is arranged on the rolling shaft in a sleeving mode, and the clockwork spring is arranged between the inner wall of the limiting box and the rolling shaft; by arranging the limiting mechanism, the angles and positions between the hips and the legs of patients with different bodies are adjusted, the hip bending angle of the patient can be limited under pulling of the fixing belt, the dislocation phenomenon caused by large hip movement can be effectively restrained, the distance between the two legs of the patient is adjusted by arranging the supporting assembly, and therefore the hip bending angle of the patient can be adjusted. The angles of the two legs are adjusted and fixed, so that the hip joint is adjusted to an angle suitable for rehabilitation.

Description

Technical Field

[0001] This application relates to the field of medical assistive device technology, and in particular to a fixation device for preventing dislodgement after hip replacement surgery. Background Technology

[0002] After hip replacement surgery, patients should not flex their hips more than 90° when getting up and moving around, otherwise it can easily lead to hip dislocation. Subconscious squatting movements after surgery are also potential factors that can cause hip dislocation. Once hip dislocation occurs, it will cause secondary harm to the patient's physical and mental health, leading to prolonged hospitalization and increased medical expenses, thus increasing the patient's financial burden.

[0003] However, most existing hip joint anti-dislocation fixation devices are generic. Nowadays, most patients undergoing hip replacement surgery are elderly, who generally have low levels of education or are even illiterate. They also have low compliance with medical advice. Some elderly people suffer from diseases such as Alzheimer's disease and lack awareness of their daily activities, making it difficult for them to follow medical staff's instructions and keep their hip flexion angle within 90°, which can lead to hip dislocation. Therefore, we have designed an anti-dislocation fixation device for hip replacement surgery. Utility Model Content

[0004] The hip replacement surgery anti-dislocation fixation device provided in this application can solve the technical problem that the elderly generally have low levels of education, or are even illiterate, have low compliance with medical advice, lack awareness of their own daily activities, and find it difficult to follow the medical staff's instructions to keep the hip flexion angle within 90°, which leads to hip dislocation.

[0005] This application provides a postoperative anti-dislocation fixation device for hip replacement surgery, comprising a lumbar support belt, a limiting mechanism, and a tightening mechanism. The limiting mechanism includes a limiting box, a winding shaft, a ratchet, a spring, and a fixing component. The limiting box is fixedly installed on both sides of the lumbar support belt. The winding shaft is rotatably connected inside the limiting box. The ratchet is sleeved on the winding shaft and fixedly connected to it. The spring is disposed between the inner wall of the limiting box and the winding shaft, with one end fixedly connected to the rear inner wall of the limiting box and the other end fixedly connected to the outer periphery of the winding shaft. The tightening mechanism is used to fix the patient's hip joint and leg, and the fixing component is used to fix the ratchet.

[0006] The technical solutions described in this application embodiment have at least the following technical effects:

[0007] 1. This application uses a winding shaft, ratchet, pawl, spring, compression spring, and fixing belt to adjust the angle and position between the hip and leg of patients with different body types. At the same time, the fixing belt limits the hip flexion angle to within 90°, thereby effectively inhibiting dislocation caused by excessive hip movement and accelerating the patient's recovery to a certain extent.

[0008] 2. This application uses a ball joint, adjusting ring, and connecting rod to adjust the distance between the patient's legs, and to adjust and fix the angle of the legs, thereby adjusting the hip joint to a suitable angle for rehabilitation, making it easier for the patient to recover. The rotatable rotating parts and the ventilation holes on the waist belt make the patient more comfortable during the rehabilitation process and prevent bedsores from easily forming on the patient's hip. It is also fixed in three positions: waist belt, thigh belt, and calf belt, with good fixation effect and no falling off.

[0009] In some embodiments, the fixing component includes a pawl and a compression spring. A through hole is provided on the right side wall of the limiting box. The pawl is rotatably connected in the through hole, and one end of the pawl abuts against the ratchet. The compression spring is fixedly connected between the bottom wall of the limiting box and the pawl.

[0010] In some embodiments, the fixing component further includes a fixing strap, the bottom of the limiting box has a connecting hole, one end of the fixing strap is wound on the winding shaft and fixed to the winding shaft, and the other end of the fixing strap passes through the connecting hole and is fixedly connected to the tightening mechanism.

[0011] In some embodiments, the tightening mechanism includes a thigh strap, a calf strap, a rotating member, and a support assembly. The thigh strap is fixedly connected to the fixing strap near the top. The rotating member is rotatably connected to the bottom of the thigh strap. The calf strap is rotatably connected to the thigh strap via the rotating member.

[0012] In some embodiments, the support assembly includes a ball joint and a connecting rod. The ball joint is fixedly connected to the surface of the rotating member, the connecting rod is disposed between the thigh straps, and both ends of the connecting rod are hinged to the ball joint. An adjustment ring is also provided on the connecting rod.

[0013] In some embodiments, protective pads are fixedly connected to the inner walls of the thigh strap and the calf strap, and a polypropylene strip is provided at the opening connection between the thigh strap and the calf strap.

[0014] In some embodiments, the waist belt is further provided with a plurality of ventilation holes, and one end of the opening connection of the waist belt is provided with a Velcro female side, and the other end of the opening connection of the waist belt is provided with a Velcro female side. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of a postoperative anti-dislocation fixation device for hip replacement surgery provided in an embodiment of this application;

[0017] Figure 2 This is a schematic diagram of another perspective of a hip replacement surgery anti-dislocation fixation device provided in an embodiment of this application;

[0018] Figure 3 This is a schematic diagram of the internal structure of the limiting box of a hip replacement surgery anti-dislocation fixation device provided in an embodiment of this application.

[0019] The reference numerals in the figures are as follows: 1. Waist belt; 2. Limiting mechanism; 21. Limiting box; 22. Rewinding shaft; 23. Ratchet; 24. Spring; 25. Fixing assembly; 251. Pawl; 252. Compression spring; 26. Fixing strap; 3. Tightening mechanism; 31. Thigh belt; 32. Calf belt; 33. Rotating component; 34. Support assembly; 341. Ball joint; 342. Connecting rod; 4. Through hole; 5. Adjusting ring; 6. Protective pad; 7. Polypropylene belt; 8. Ventilation hole; 9. Hook and loop fastener female side; 10. Hook and loop fastener female side; 11. Connecting hole. Detailed Implementation

[0020] Based on this, in order to improve the high compliance of elderly people with medical advice in related technologies, some elderly people suffer from diseases such as Alzheimer's disease, lack awareness of their daily activities, and find it difficult to follow the medical advice of medical staff to keep the hip flexion angle within 90°, which leads to hip dislocation, the embodiments of this application provide the following solutions.

[0021] Please see Figures 1 to 3 A postoperative anti-dislocation fixation device for hip replacement surgery includes a waist belt 1, a limiting mechanism 2, and a tightening mechanism 3. The waist belt 1 is used to fix the patient's waist, the limiting mechanism 2 is used to limit the patient's hip flexion angle, and the tightening mechanism 3 is used to fix the patient's hip joint and leg.

[0022] Please see Figures 1 to 2The tightening mechanism 3 includes a thigh strap 31, a calf strap 32, a rotating component 33, and a support assembly 34. The thigh strap 31 is fixedly connected to the fixing strap 26 near the top. The rotating component 33 is rotatably connected to the bottom of the thigh strap 31. The calf strap 32 is rotatably connected to the thigh strap 31 through the rotating component 33.

[0023] The support assembly 34 includes a ball joint 341 and a connecting rod 342. The ball joint 341 is fixedly connected to the surface of the rotating member 33. The connecting rod 342 is disposed between the thigh straps 31, and both ends of the connecting rod 342 are hinged to the ball joint 341. An adjusting ring 5 is also provided on the connecting rod 342. Protective pads 6 are fixedly connected to the inner walls of the thigh straps 31 and the calf straps 32, and a polypropylene strap 7 is provided at the opening connection between the thigh straps 31 and the calf straps 32.

[0024] With this setup, during the process of protecting and fixing the patient's hip joint, the polypropylene straps 7 at the openings of the thigh strap 31 and calf strap 32 of the device are first untied. Then, the patient's thigh and calf are placed into the thigh strap 31 and calf strap 32 respectively, and then fixed to the patient's leg by the polypropylene straps 7. After the patient's leg is fixed, the length of the connecting rod 342 and the angle between its two ends and the ball joint 341 are adjusted to a comfortable angle and length by the adjusting ring 5 on the connecting rod 342. At this time, the connecting rod 342 is fixed by the adjusting ring 5, thus completing the fixation of the patient's leg by the device.

[0025] The effect of this setup is that the ball joint 341, adjusting ring 5, and connecting rod 342 work together to adjust the distance between the patient's legs, adjust and fix the angle of the legs, thereby adjusting the hip joint to a suitable angle for rehabilitation, making it easier for the patient to recover. The rotatable rotating part 33 makes the patient more comfortable during the rehabilitation process. It is also fixed in two positions by the thigh strap 31 and the calf strap 32, which has a good fixation effect and will not fall off.

[0026] Please see Figures 1 to 3 The limiting mechanism 2 includes a limiting box 21, a take-up shaft 22, a ratchet 23, a spring 24, and a fixing assembly 25. The limiting box 21 is fixedly installed on both sides of the waist belt 1. The take-up shaft 22 is rotatably connected inside the limiting box 21. The ratchet 23 is sleeved on the take-up shaft 22 and is fixedly connected to the take-up shaft 22. The spring 24 is disposed between the inner wall of the limiting box 21 and the take-up shaft 22. One end of the spring 24 is fixedly connected to the rear inner wall of the limiting box 21, and the other end is fixedly connected to the outer periphery of the take-up shaft 22.

[0027] The fixing component 25 includes a pawl 251 and a compression spring 252. A through hole 4 is provided on the right side wall of the limiting box 21. The pawl 251 is rotatably connected in the through hole 4, and one end of the pawl 251 abuts against the ratchet 23. The compression spring 252 is fixedly connected between the bottom wall of the limiting box 21 and the pawl 251. The fixing component 25 also includes a fixing strap 26. A connecting hole 11 is provided at the bottom of the limiting box 21. One end of the fixing strap 26 is wound on the winding shaft 22, and one end of the fixing strap 26 is fixed to the winding shaft 22. The other end of the fixing strap 26 passes through the connecting hole 11 and is fixedly connected to the tightening mechanism 3. A plurality of ventilation holes 8 are also provided on the waist belt 1. A Velcro female side 9 is provided at one end of the opening connection of the waist belt 1, and a Velcro female side 10 is provided at the other end of the opening connection of the waist belt 1.

[0028] With this setup, after the patient's legs are secured, the waist belt 1 is placed around the patient's waist and secured with Velcro. The length of the securing strap 26 is then adjusted according to the patient's height. During adjustment, the pawl 251 is first moved to one side, dislocating it from the ratchet 23. Then, the securing strap 26 is pulled, causing it to slowly release from the winding shaft 22 as the shaft rotates. Once the strap 26 is adjusted to the appropriate length, the pawl 251 is moved back to its original position. Under the action of the compression spring 252, the pawl 251 engages with the ratchet 23, securing it. With the securing and limiting effect of the strap 26, when the patient's hip flexion exceeds a certain angle, the strap 26 will pull the patient's leg, preventing easy hip flexion and alerting the patient, thus limiting the patient's hip flexion angle.

[0029] The effect of this setup is that, through the cooperation of the winding shaft 22, ratchet 23, pawl 251, spring 24, compression spring 252, and fixing belt 26, the angle and corresponding position between the hip and leg of patients with different body shapes can be appropriately adjusted. At the same time, under the pulling of the fixing belt 26, the patient's hip flexion angle will be limited to within 90°, thereby effectively inhibiting dislocation caused by excessive hip movement, and thus accelerating the patient's recovery speed to a certain extent. The ventilation holes 8 on the waist belt 1 will prevent bedsores from easily forming on the patient's hip.

[0030] As can be seen from the above, the working principle of this application is as follows:

[0031] During the process of protecting and fixing the patient's hip joint, firstly, the polypropylene straps 7 at the openings of the thigh strap 31 and calf strap 32 of the device are untied. Then, the patient's thigh and calf are placed into the thigh strap 31 and calf strap 32 respectively, and then fixed to the patient's leg by the polypropylene straps 7. After the patient's leg is fixed, the length of the connecting rod 342 and the angle between its two ends and the ball joint 341 are adjusted to a comfortable angle and length by adjusting the adjusting ring 5 on the connecting rod 342. At this time, the connecting rod 342 is fixed by adjusting the adjusting ring 5, thus completing the fixation of the patient's leg by the device.

[0032] After the patient's legs are secured, the waist belt 1 is placed around the patient's waist and secured with Velcro. The length of the securing strap 26 is then adjusted according to the patient's height. During adjustment, the pawl 251 is first moved to one side, dislocating it from the ratchet 23. Then, the securing strap 26 is pulled, causing it to slowly release from the winding shaft 22 as the shaft rotates. Once the securing strap 26 is adjusted to the appropriate length, the pawl 251 is moved back to its original position. Under the action of the compression spring 252, the pawl 251 abuts against the ratchet 23, securing it. With the securing strap 26 in place and limiting the movement, if the patient's hip flexion exceeds a certain angle, the strap 26 will pull the patient's leg, preventing easy hip flexion and alerting the patient, thus limiting the patient's hip flexion angle.

[0033] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A postoperative anti-dislocation fixation device for hip replacement, characterized in that: The invention comprises a waist belt (1), a limiting mechanism (2) and a tightening mechanism (3); the limiting mechanism (2) comprises a limiting box (21), a winding shaft (22), a ratchet (23), a spring spring (24) and a fixing assembly (25); the limiting box (21) is fixedly mounted on both sides of the waist belt (1); the winding shaft (22) is rotatably connected to the inside of the limiting box (21); the ratchet (23) is sleeved on the winding shaft (22); and the fixing assembly (25) is fixedly mounted on the winding shaft (22). The ratchet (23) is fixedly connected to the winding shaft (22); the winding spring (24) is arranged between the inner wall of the limit box (21) and the winding shaft (22); one end of the winding spring (24) is fixedly connected to the rear inner wall of the limit box (21), and the other end is fixedly connected to the outer periphery of the winding shaft (22); the tightening mechanism (3) is used to fix the patient's hip joint and leg; and the fixing assembly (25) is used to fix the ratchet (23).

2. The postoperative anti-dislocation fixation device for hip replacement according to claim 1, characterized in that: The fixing assembly (25) comprises a pawl (251) and a compression spring (252); a through hole (4) is provided on the right side wall of the limit box (21); the pawl (251) is rotatably connected in the through hole (4); one end of the pawl (251) abuts against the ratchet wheel (23); and the compression spring (252) is fixedly connected between the inner bottom wall of the limit box (21) and the pawl (251).

3. The post-operative anti-dislocation fixation device for hip replacement according to claim 2, characterized in that: The fixing assembly (25) further comprises a fixing belt (26); a connecting hole (11) is provided at the bottom of the limit box (21); one end of the fixing belt (26) is rolled up on the winding shaft (22), and one end of the fixing belt (26) is fixed to the winding shaft (22); the other end of the fixing belt (26) passes through the connecting hole (11) and is fixedly connected to the tightening mechanism (3).

4. The postoperative anti-dislocation fixation device for hip replacement according to claim 3, characterized in that: The tightening mechanism (3) comprises a thigh strap (31), a calf strap (32), a rotating member (33) and a supporting assembly (34); the thigh strap (31) is fixedly connected to the fixing belt (26) at a position close to the top; the rotating member (33) is rotatably connected to the bottom of the thigh strap (31); and the calf strap (32) is rotatably connected to the thigh strap (31) via the rotating member (33).

5. The post-operative anti-dislocation fixation device for hip replacement according to claim 4, characterized in that: The support assembly (34) comprises a spherical joint (341) and a connecting rod (342); the spherical joint (341) is fixedly connected to the surface of the rotating member (33); the connecting rod (342) is arranged between the thigh straps (31), and both ends of the connecting rod (342) are hinged to the spherical joint (341); and an adjustment ring (5) is also arranged on the connecting rod (342).

6. The post-operative anti-dislocation fixation device for hip replacement according to claim 5, characterized in that: A protective pad (6) is fixedly connected to the inner walls of the thigh strap (31) and the calf strap (32), and a polypropylene belt (7) is provided at the opening connecting the thigh strap (31) and the calf strap (32).

7. The post-operative anti-dislocation fixation device for hip replacement according to claim 1, characterized in that: The waist belt (1) is also provided with a plurality of ventilation holes (8), and a Velcro mother surface (9) is provided at one end of the opening connection of the waist belt (1), and a Velcro sub-surface (10) is provided at the other end of the opening connection of the waist belt (1).

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