An assistive device for applying a herringbone cast to the hip.

Abstract

This invention patent belongs to the technical field of surgical auxiliary equipment, specifically disclosing an auxiliary device for applying a herringbone cast to the hip. The device includes a bed frame with a horizontal conveyor belt at the upper end, extending along the length of the bed frame to form a bed board for supporting the patient; a pair of clamping devices for securing the patient's feet; a driving device including a mounting base, a driving mechanism for moving the mounting base along the length of the bed frame, and a pair of first lifting mechanisms for raising and lowering the clamping devices. The mounting base is connected to a second lifting mechanism for raising and lowering the first lifting mechanisms; and a leg posture adjustment device for adjusting the distance between the pair of clamping devices. This device can quickly adjust the patient's posture to the optimal position, improving the efficiency of applying a herringbone cast to the hip, and requires no multiple people to work together, avoiding the need for excessive manpower.

Description

Technical Field

[0001] This invention relates to the technical field of surgical aids, and in particular to an aid for applying a herringbone cast to the hip. Background Technology

[0002] Patients with hip fractures, whether treated surgically or conservatively, often require external fixation with a plaster cast. This is achieved by applying a "hip chiasm cast" to the hip. During the entire process of applying the hip chiasm cast, it is necessary to support the patient's torso and buttocks to maintain the optimal position, which will allow the doctor to perform the procedure in the shortest possible time.

[0003] Currently, most methods involve placing the patient on a table and having multiple people assist by holding the patient's legs and torso to adjust their posture and maintain the optimal position. However, this method has the following drawbacks:

[0004] 1) It requires medical staff to hold the patient's legs in one position for a long time, which increases the burden on medical staff;

[0005] 2) Multiple medical staff members are required to have extensive clinical experience;

[0006] 3) It requires multiple medical staff to work together and adjust the patient's posture repeatedly, which is time-consuming and results in low efficiency of applying a hip wing cast and a large amount of manpower. Summary of the Invention

[0007] In view of the problems in the prior art, the purpose of this invention is to provide an auxiliary device for applying a herringbone cast to the hip, which can quickly adjust the patient's posture to the optimal position, improve the efficiency of applying a herringbone cast to the hip, and avoid the need for multiple people to cooperate, thus avoiding the occupation of a large amount of manpower.

[0008] To achieve the above objectives, the technical solution of the present invention is as follows:

[0009] Design an assistive device for applying a herringbone cast to the hip, including:

[0010] The bed body includes a bed frame, the upper end of which is provided with a horizontal conveyor belt that extends along the length of the bed frame to form a bed board for supporting the patient;

[0011] A pair of clamping devices are used to secure the patient's feet separately;

[0012] A driving device includes a mounting base, a driving mechanism for driving the mounting base to move along the length of the bed frame, and a pair of first lifting mechanisms for driving the clamping device to rise and fall. The mounting base is connected to a second lifting mechanism for driving the first lifting mechanism to rise and fall. The first lifting mechanism includes a linear motion module. The second lifting mechanism includes a base connected to the mounting base, a first guide rod extending horizontally along the length of the bed frame, and a first electric push rod extending and retracting axially along the first guide rod. One end of the first guide rod is connected to the base, and the other end is hinged to the side wall of the guide sleeve and has a first hinge point. The guide sleeve rotates about the first hinge point in a first direction. The first electric push rod is connected to the base, and the telescopic end of the first electric push rod is hinged to the lower end of a slide rod inserted in the guide sleeve and has a second hinge point. The slide rod rotates about the second hinge point in a second direction. The upper end of the slide rod is hinged to the linear motion module and has a third hinge point. The linear motion module rotates about the third hinge point in a third direction. The first direction, the second direction, and the third direction are all located in the same vertical plane.

[0013] And a leg posture adjustment device for adjusting the distance between the pair of clamping devices.

[0014] Furthermore, it also includes a hip support device, which includes a pad located at the foot of the bed. The lower end of the pad is connected to a base via a third lifting mechanism. The base is connected to one end of a second guide rod extending horizontally along the length of the bed frame. The other end of the second guide rod is inserted into a first sliding sleeve located on the bed frame. The second guide rod slides along its own axis. The pad is located in the middle of the end of the conveyor belt, and the side of the pad closest to the end of the conveyor belt is designed to contact the end of the conveyor belt. The side of the pad away from the conveyor belt is provided with a stop bar for contacting the patient's pubic area.

[0015] Furthermore, a limiting nut is provided at the end of the second guide rod away from the base, and a first return spring is sleeved on that end. The two ends of the first return spring abut against the first sliding sleeve and the limiting nut, respectively, and the limiting nut and the second guide rod are threadedly connected.

[0016] Furthermore, the clamping device includes a pedal and a first limiting mechanism, the first limiting mechanism being used to limit the patient's foot during operation, so that it is bound to the pedal.

[0017] Furthermore, the first limiting mechanism includes a pair of straps, the fixed ends of which are connected to the pedal, and the free ends of which are connected by Velcro. The pedal is connected to the slide of the linear motion module via a bracket, and the bracket is provided with a support roller for supporting the patient's lower leg. The rear end of the pedal is provided with a limiting plate for contacting the heel.

[0018] Furthermore, the bracket includes a support rod parallel to the linear motion module, with the upper end of the support rod hinged to the roller and the lower end connected to a pedal.

[0019] Furthermore, the idler roller is a nylon idler roller, and the nylon idler roller has an arc-shaped annular groove coaxially provided in the middle.

[0020] Furthermore, the driving device includes a first lead screw, a third guide rod, and a first driving part for driving the first lead screw to rotate. The first lead screw and the third guide rod both extend along the length direction of the bed. The first threaded sleeve on the first lead screw and the sliding sleeve on the third guide rod are both connected to the mounting base.

[0021] Furthermore, the leg posture adjustment device includes a second lead screw extending along the width direction of the bed and a second drive unit that drives the second lead screw to rotate. The threads at both ends of the second lead screw have opposite directions, and each end of the second lead screw is provided with a second threaded sleeve. The second threaded sleeve is hinged to a second sliding sleeve and has a fourth hinge point. The second sliding sleeve rotates around the fourth hinge point in a fourth direction. The first guide rod is inserted into the second sliding sleeve. The base and the mounting base are hinged and have a fifth hinge point. The base rotates around the fifth hinge point in a fifth direction. Both the fourth and fifth directions are located in the horizontal plane.

[0022] Furthermore, it also includes a third drive unit that drives the linear motion module to rotate around the third hinge point, the third drive unit including a motor.

[0023] Furthermore, the inner side of the annular belt of the horizontal conveyor belt is provided with a support plate connected to the bed frame. The support plate is horizontally arranged, and the inner side of the upper part of the annular belt is in contact with the upper side of the support plate.

[0024] Compared with existing technologies, the auxiliary equipment and measurement method for applying a herringbone cast to the hip provided by this invention are unique and easy to operate. It uses a horizontal conveyor belt instead of a traditional bed board to facilitate the adjustment of the patient's position on the bed, allowing the lower body to be suspended in the air without the need for manual lifting of the patient's body. Furthermore, the first lifting mechanism, the second lifting mechanism, and the leg posture adjustment device support and adjust the patient's leg posture to the optimal position for applying the herringbone cast, replacing the need for repeated manual adjustment of the patient's leg posture. It also eliminates the need for manual holding of the patient's legs in one position for extended periods, greatly reducing the workload of medical staff and eliminating the need for strict requirements on the clinical experience of medical staff. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, 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 the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Appendix Figure 1 This is a frontal full sectional view of an auxiliary device for applying a herringbone cast to the hip.

[0027] Appendix Figure 2 For the appendix Figure 1 Top view.

[0028] Appendix Figure 3 For the appendix Figure 1 Sectional view of AA.

[0029] In the diagram: 1. Clamping device, 101. Pedal, 102. Strap, 103. Support rod, 104. Idler roller, 2. Linear motion module, 201. Slide, 3. Third hinge point, 4. Third drive unit, 5. Hip support device, 501. Stop bar, 502. Pad, 503. Third lifting mechanism, 504. Base, 505. First sliding sleeve, 506. Second guide rod, 507. Return spring, 6. Conveyor belt, 601. Belt 7. Support plate, 8. First drive unit, 9. First lead screw, 10. First threaded sleeve, 11. Mounting seat, 12. Fifth hinge point, 13. Base, 14. Electric push rod, 15. First guide rod, 16. Second sliding sleeve, 17. Second threaded sleeve, 18. Second lead screw, 19. Bearing seat, 20. Second hinge point, 21. Sliding rod, 22. Guide sleeve, 23. First hinge point, 24. Bed frame, 25. Sliding sleeve, 26. Third guide rod. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0031] like Figures 1 to 3As shown, an auxiliary device for applying a herringbone cast to the hip, as a preferred embodiment of the present invention, includes a bed frame 24. A horizontal conveyor belt 6 is provided at the upper end of the bed frame 24, extending along its length to form a bed board for supporting the patient. Specifically, the conveyor belt 6 includes a driving wheel and a driven wheel rotatably connected to the head and foot of the bed frame, respectively. The driving wheel is connected to the driven wheel via a ring belt, and a motor is connected to the driving wheel to drive its rotation. Thus, after the patient is placed on the conveyor belt 6, the patient... By controlling the forward and reverse rotation of the conveyor belt 6, the patient can be moved towards the foot or head of the bed, thereby adjusting the patient's position on the bed so that the patient's buttocks and legs extend out of the bed, facilitating the application of plaster casts to the hips and legs. The inner side of the annular belt 601 of the horizontal conveyor belt is provided with a support plate 7 connected to the bed frame 24. The support plate 7 is horizontally arranged, and the inner side of the upper part of the annular belt 601 contacts the upper side of the support plate 7 to support the patient lying on the conveyor belt 6, prevent the conveyor belt 6 from collapsing under pressure, and ensure the stability of the patient during movement.

[0032] A pair of clamping devices 1 are used to fix the patient's two feet respectively. Each foot of the patient is equipped with a clamping device 1, which limits the position of the patient's two feet respectively.

[0033] The driving device includes a mounting base 11, a first driving mechanism for driving the mounting base 11 to move along the length of the bed frame 24, and a pair of first lifting mechanisms for driving the clamping device 1 to rise and fall. The mounting base 11 is connected to a second lifting mechanism for driving the first lifting mechanisms to rise and fall. The second lifting mechanism is connected to the mounting base 11. That is, through the cooperation of the first and second lifting mechanisms, a two-stage adjustment of the patient's leg height is achieved, thereby replacing manual support and lifting the patient's legs to facilitate medical staff in applying casts to patients whose legs and hips are suspended. The first lifting mechanism includes a linear motion module 2 (the linear motion module 2 is...). (The specific structure and principle of the existing technology will not be described in detail here). The second lifting mechanism includes a vertically arranged base 13 connected to the mounting seat, a first guide rod 15 extending horizontally along the length direction of the bed frame 24, and a first electric push rod 14 extending and retracting axially along the first guide rod 15. The first guide rod 15 and the first electric push rod 14 are parallel, and the first guide rod 15 is located above the first electric push rod 14. The two are arranged vertically in sequence. One end of the first guide rod 15 is connected to the base 13 (which can be welded), and the other end is hinged to the side wall of the guide sleeve 22 and has a first hinge point 23. The guide sleeve 22 is wound around the first guide rod 13. A hinge point 23 rotates along a first direction. The first electric push rod 14 and the base 13 are fixedly connected. The telescopic end of the first electric push rod 14 is hinged to the lower end of the slide rod 21 inserted in the guide sleeve 22 and has a second hinge point 20. The slide rod 21 rotates around the second hinge point 20 along a second direction. The upper end of the slide rod 21 is hinged to the linear motion module 2 and has a third hinge point 3. The linear motion module 2 rotates around the third hinge point 3 along a third direction. The first direction, the second direction, and the third direction are all located in the same vertical plane. Therefore, the first electric push rod 14 can be extended to cooperate with the first guide rod 15 to drive the first electric push rod 14. The slide bar 21 swings in the vertical plane and changes the length of the upper end of the slide bar 21 extending out of the guide sleeve 22. Due to the connection between the lower leg and the thigh, by raising the lower leg, the patient's thigh is raised, and the patient's lower leg is brought closer to the thigh to perform a knee flexion movement. At the same time, the clamping device 1 can be driven to rise through the linear motion module 2 to further raise the patient's leg and adjust the range of knee flexion, thereby adjusting the patient's leg posture to adapt to the application of a hip spica cast. The leg posture adjustment device is used to adjust the distance between the pair of clamping devices 1, thereby spreading the patient's legs apart to adjust the distance between the patient's legs.

[0034] It should be noted that in actual use, the patient is placed on the conveyor belt 6, and the patient's feet are adjusted to extend so that they can be fixed in the clamping device 1. Then, the conveyor belt 6 and the drive mechanism move synchronously to suspend the patient's legs and hips outside the bed. Next, the second lifting mechanism is adjusted first, followed by the first lifting mechanism. Then, the leg posture adjustment device is used to adjust the degree of splay of the patient's bed legs. The three work together to adjust the patient's leg posture to the optimal position. The principle is as follows: due to the support of the thigh, the lower leg is tilted, which naturally drives the linear motion module 2 to rotate around the third hinge point 3 to form a matching tilt posture. Then, the first drive mechanism drives the patient's feet to rise, thereby raising the entire leg. The first drive mechanism moves the foot closer to the thigh, adjusting the degree of knee flexion. Additionally, since the linear motion module is tilted, it drives the patient's foot to tilt and rise, raising or lowering it to further adjust the patient's leg posture. The adjustment range is wider. After the cast is applied to the patient's leg or hip, the clamping device 1 releases the foot, and the conveyor belt 6, first drive mechanism, and second drive mechanism are reset, moving the patient to the bed. This completes the hip cast application surgery. Furthermore, adjusting the patient's leg posture is common medical practice, and the surgical plan is determined based on the patient's hip condition.

[0035] When using the auxiliary device for applying a herringbone cast to the hip provided by this invention, a horizontal conveyor belt 6 is used instead of a traditional bed board to facilitate adjusting the patient's position on the bed so that their lower body is suspended in the air, eliminating the need for manual lifting of the patient's body. Furthermore, the first lifting mechanism, the second lifting mechanism, and the leg posture adjustment device support and adjust the patient's leg posture to the optimal position for applying the herringbone cast, replacing the need for repeated manual adjustments of the patient's leg posture. It also eliminates the need for manual holding of the patient's legs in one position for extended periods, greatly reducing the workload of medical staff and eliminating the need for strict requirements on the clinical experience of medical staff.

[0036] It should be noted that this device is not only used for applying hip casts, but also for applying casts to other injured areas of the leg, such as the knee, ankle, calf, or thigh. It has a wide range of applications and is multifunctional.

[0037] Based on the above embodiments, a hip support device 5 is also included. The hip support device 5 is used to support the patient's suspended hips, reduce the gripping force on the patient's feet, and thus improve the patient's comfort. The hip support device 5 can be removed when applying a cast to the hip, allowing the hip support device 5 to detach from the patient's hips and free up space for the cast application. Specifically, the hip support device 5 includes a pad 502 located at the foot of the bed. The upper end of the pad 502 is used to support the patient's hips, and the lower end of the pad 502 is connected to a base 504 via a third lifting mechanism 503. The base 504 is connected to one end of a pair of second guide rods 506 extending horizontally along the length of the bed frame 24. The other end of the second guide rods 506 is inserted into a first sliding sleeve 505 located on the bed frame 24. The second guide rods 506 slide along their own axis. The pad 502 is located in the middle of the end of the conveyor belt 6, and the pad 502 is close to the conveyor belt. One side of the conveyor belt 6 is designed to contact the end of the conveyor belt 6. The side of the pad 502 away from the conveyor belt 6 is provided with a stop bar 501 for contacting the patient's pubic area. During operation, the conveyor belt 6 moves the patient toward the foot of the bed. The third lifting mechanism 503 can be pre-controlled to drive the pad 502 to descend below the upper end of the conveyor belt 6, so that the patient's buttocks can land on or be above the pad 502 during the movement of the conveyor belt 6. Subsequently, the third lifting mechanism 503 can be controlled to rise and lift the pad 502, thereby supporting the patient's buttocks. Since the second guide rod 506 and the first sliding sleeve 505 slide together, the pad 502 moves synchronously after the patient contacts the pad 502 and the stop bar. During the subsequent plastering process, the third lifting mechanism 503 can be controlled to move the pad 502 to contact or detach from the patient's buttocks as needed. Specifically, the third lifting mechanism is a vertically arranged second electric push rod.

[0038] For better technical results, based on the above embodiment, the second guide rod 506 is provided with a limiting nut at one end away from the base 504 and a first return spring 507 is sleeved on that end. The two ends of the first return spring 507 abut against the first sliding sleeve 505 and the limiting nut, respectively. The limiting nut and the second guide rod 506 are threadedly connected. Thus, the limiting nut can prevent the second guide rod 506 from disengaging from the first sliding sleeve 505, and the first return spring 507 can drive the pad 502 to return to the foot of the bed after the support plate is disengaged from the patient's buttocks.

[0039] Based on the above embodiments, the clamping device 1 includes a pedal 101 and a first limiting mechanism. The first limiting mechanism is used to limit the patient's foot during operation, binding it to the pedal 101. Then, by moving the clamping device 1, the patient's foot can be moved. Specifically, the first limiting mechanism includes a pair of straps 102. The fixed ends of the pair of straps 102 are connected to the pedal 101, and the free ends of the pair of straps 102 are connected by Velcro for easy connection and disconnection. The pedal 101 is connected to the slide 201 of the linear motion module 2 through a bracket. The bracket is provided with a support roller 104 for supporting the patient's lower leg. The support roller 104 supports the lower leg, distributes the force on the patient's foot, and limits the posture of the lower leg to avoid ankle strain. In addition, the rotation of the support roller 104 can improve the smoothness of the lower leg movement. The rear end of the pedal 101 is provided with a limiting plate for contacting the heel, which, together with the straps 102, fixes the foot and prevents it from falling off the pedal 101.

[0040] Based on the above embodiment, the bracket includes a support rod 103 parallel to the linear motion module 2. The upper end of the support rod 103 is hinged to the roller 104, and the lower end is connected to the pedal 101, thereby exposing the side of the leg away from the support rod 103 to avoid interference with the application of plaster to the leg.

[0041] Based on the above embodiment, the roller 104 is a nylon roller 104. The nylon roller 104 has an arc-shaped annular groove coaxially provided in the middle. The annular groove is designed to accommodate the rear end of the patient's lower leg, which serves as a limit to prevent the leg from sliding left and right along the roller 104, thus maintaining the stability of the leg and facilitating the application of a cast.

[0042] Based on the above embodiments, the first driving mechanism includes a first lead screw 9, a third guide rod 26, and a first driving part 8 that drives the first lead screw 9 to rotate. The first lead screw 9 and the third guide rod 26 both extend along the length of the bed, and the two ends of the first lead screw 9 are rotatably connected to the side plates on both sides below the bed. Similarly, the two ends of the third guide rod 26 are connected to the side plates on both sides below the bed. The first lead screw 9 and the third guide rod 26 are both horizontal. The first threaded sleeve 10 on the first lead screw 9 and the sliding sleeve 25 on the third guide rod 26 are both connected to the mounting base 11. By controlling the action of the first driving part 8, the first lead screw 9 can be driven to rotate, thereby driving the mounting base 11 to move back and forth, and then driving the mounting base 11 to push the first lifting mechanism and the second lifting mechanism to translate, so as to cooperate with the conveyor belt 6 to lift the patient's legs off the bed until they are suspended in the air. Specifically, the first driving part 8 includes a motor and a reducer. The motor is connected to the first lead screw through the reducer, thereby driving the first lead screw to rotate.

[0043] Based on the above embodiment, the leg posture adjustment device includes a second lead screw 18 extending along the width direction of the bed and a second drive unit that drives the second lead screw 18 to rotate. The threads at both ends of the second lead screw 18 have opposite directions, and each end of the second lead screw 18 is provided with a second threaded sleeve 17. The second threaded sleeve 17 is hinged to a second sliding sleeve 16 and has a fourth hinge point. The second sliding sleeve 16 rotates around the fourth hinge point in a fourth direction. A first guide rod 15 is inserted into the second sliding sleeve 16. The base 13 and the mounting base 11 are hinged and have a fifth guide rod 15. The base 13 rotates around the fifth hinge point 12 in the fifth direction. The fourth and fifth directions are both located in the horizontal plane. That is, by controlling the second drive unit to drive the second lead screw 18 to rotate forward or backward, the second telescopic mechanism can be driven to move closer or further away from each other, thereby driving the clamping device 1 to move closer or further away, so as to adjust the patient's leg spread posture. Specifically, the second drive unit is a motor fixed to the bed frame. The motor is connected to the second lead screw 18 through a coupling, and the two ends of the second lead screw 18 are connected to the bed frame 24 through bearing seats 19.

[0044] For better technical results, based on the above embodiments, a third drive unit 4 is also included to drive the linear motion module 2 to rotate around the third hinge point 3. The third drive unit 4 includes a motor fixed to the housing of the linear motion module 2. Specifically, the linear motion module is fixed with a bushing, and the slide rod and the pin inserted in the bushing are fixedly connected to achieve hinge. The motor is connected to the pin through a gear transmission mechanism. The tilting posture of the patient's lower leg can be directly adjusted using the second drive mechanism. In addition, when the linear motion module 2 is close to the foot of the bed, the linear motion module 2 at the foot of the bed is rotated upward around the third hinge point 3, so that the upper end of the linear motion module 2 is close to the foot of the bed. This allows the patient's leg to slide onto the roller 104 when the human leg moves synchronously with the conveyor belt 6. Under the guidance of the roller 104, the patient's foot enters the pedal 101 without the need for manual adjustment of the patient's leg position to enter the pedal 101, which is convenient and quick.

[0045] Preferably, it also includes a control handle and a controller electrically connected to the control handle. The controller is electrically connected to the first drive unit, the second drive unit, the third drive unit, the first electric push rod, the second electric push rod, and the conveyor belt, respectively, so as to facilitate control by medical staff. Alternatively, an adjustment program can be preset in the controller so that after the patient is placed on the bed, the controller can send instructions to each part to automatically adjust the patient to the optimal position, thereby improving efficiency.

[0046] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0047] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0048] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An auxiliary device for applying a herringbone cast to the hip, characterized in that, include: The bed body includes a bed frame, the upper end of which is provided with a horizontal conveyor belt that extends along the length of the bed frame to form a bed board for supporting the patient; A pair of clamping devices are used to secure the patient's feet separately; A driving device includes a mounting base, a driving mechanism for driving the mounting base to move along the length of the bed frame, and a pair of first lifting mechanisms for driving the clamping device to rise and fall. The mounting base is connected to a second lifting mechanism for driving the first lifting mechanism to rise and fall. The first lifting mechanism includes a linear motion module. The second lifting mechanism includes a base connected to the mounting base, a first guide rod extending horizontally along the length of the bed frame, and an electric push rod that extends and retracts axially along the first guide rod. One end of the first guide rod is connected to the base, and the other end is hinged to the side wall of the guide sleeve and has a first hinge point. The guide sleeve rotates about the first hinge point in a first direction. The electric push rod is connected to the base, and the telescopic end of the electric push rod is hinged to the lower end of a slide rod inserted in the guide sleeve and has a second hinge point. The slide rod rotates about the second hinge point in a second direction. The upper end of the slide rod is hinged to the linear motion module and has a third hinge point. The linear motion module rotates about the third hinge point in a third direction. The first direction, the second direction, and the third direction are all located in the same vertical plane. And a leg posture adjustment device for adjusting the distance between the pair of clamping devices; It also includes a hip support device, which includes a pad located at the foot of the bed. The lower end of the pad is connected to a base via a third lifting mechanism. The base is connected to one end of a second guide rod that extends horizontally along the length of the bed frame. The other end of the second guide rod is inserted into a first sliding sleeve located on the bed frame. The second guide rod slides along its own axis. The pad is located in the middle of the end of the conveyor belt, and the side of the pad closest to the end of the conveyor belt is designed to contact the end of the conveyor belt. The side of the pad away from the conveyor belt is provided with a stop bar for contacting the patient's pubic area. The drive device includes a first lead screw, a third guide rod, and a first drive unit that drives the first lead screw to rotate. The first lead screw and the third guide rod both extend along the length of the bed. The first threaded sleeve on the first lead screw and the sliding sleeve on the third guide rod are both connected to the mounting base. The leg posture adjustment device includes a second lead screw extending along the width direction of the bed and a second drive unit that drives the second lead screw to rotate. The threads at both ends of the second lead screw have opposite directions, and each end of the second lead screw is provided with a second threaded sleeve. The second threaded sleeve is hinged to a second sliding sleeve and has a fourth hinge point. The second sliding sleeve rotates around the fourth hinge point in a fourth direction. The first guide rod is inserted into the second sliding sleeve. The base and the mounting base are hinged and have a fifth hinge point. The base rotates around the fifth hinge point in a fifth direction. Both the fourth and fifth directions are located in the horizontal plane.

2. The auxiliary device for applying a herringbone cast to the hip according to claim 1, characterized in that, The second guide rod has a limiting nut at one end away from the base and a first return spring is fitted at that end. The two ends of the first return spring abut against the first sliding sleeve and the limiting nut, respectively, and the limiting nut and the second guide rod are threaded together.

3. The auxiliary device for applying a herringbone cast to the hip according to claim 1, characterized in that, The clamping device includes a pedal and a first limiting mechanism, which is used to limit the patient's foot during operation, so that it is bound to the pedal.

4. The auxiliary device for applying a herringbone cast to the hip according to claim 3, characterized in that, The first limiting mechanism includes a pair of straps, the fixed ends of which are connected to the pedal, and the free ends of which are connected by Velcro. The pedal is connected to the slide of the linear motion module through a bracket, and the bracket is provided with a support roller for supporting the patient's lower leg. The rear end of the pedal is provided with a limiting plate for contacting the heel.

5. The auxiliary device for applying a herringbone cast to the hip according to claim 4, characterized in that, The bracket includes a support rod parallel to the linear motion module, with the upper end of the support rod hinged to the roller and the lower end connected to a pedal.

6. The auxiliary device for applying a herringbone cast to the hip according to claim 5, characterized in that, The idler roller is a nylon idler roller, and the nylon idler roller has an arc-shaped annular groove coaxially arranged in the middle.

7. The auxiliary device for applying a herringbone cast to the hip according to claim 1, characterized in that, It also includes a third drive unit that drives the linear motion module to rotate around the third hinge point, the third drive unit including a motor.

8. The auxiliary device for applying a herringbone cast to the hip according to any one of claims 1 to 7, characterized in that, The inner side of the annular belt of the horizontal conveyor belt is provided with a support plate connected to the bed frame. The support plate is horizontally arranged, and the inner side of the upper part of the annular belt is in contact with the upper side of the support plate.

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