Auxiliary restraining tool

Abstract

The invention relates to the technical field of restraint straps, in particular to an auxiliary restraint appliance which comprises a supporting plate, one end of the supporting plate is rotationally connected with a rotating shaft, one end of the rotating shaft is fixedly connected with a first reel, the periphery of the first reel is sleeved with a middle connecting rope, and one end of the middle connecting rope is provided with a fixing rope. And one end of the supporting plate is rotationally connected with a second reel, the periphery of the second reel is sleeved with a traction rope, and the bottom of the traction rope is fixedly connected with a lifting plate. When the emotion of a patient is stable through a bipolar limiting assembly, a reset spring pushes a lifting plate to move downwards, 45-degree meshing transmission of a first bevel gear and a second bevel gear is matched, a middle connecting rope and a fixing rope are synchronously retracted and released along with slight movement of limbs, and a reasonable movement space is reserved; when the patient feels manic and the rotating speed of the abutting roller exceeds the threshold value, the electric push rod drives the abutting frame to limit winding of the traction rope at the moment, so that negative emotions generated due to limited activities when the patient feels quiet are effectively reduced, and the nursing difficulty is reduced.

Description

Technical Field

[0001] This invention relates to the field of restraint belt technology, specifically an auxiliary restraint device. Background Technology

[0002] In neurosurgical clinical nursing, some patients are prone to emotional fluctuations due to their condition, accompanied by abnormal limb movements. During treatment and recovery, these patients require proper control of limb movement using specialized restraint devices to prevent self-harm or contact with treatment equipment caused by unconscious or emotionally driven movements. This ensures the safety and stability of the treatment process, creates a relatively suitable recovery environment for the patient, and facilitates the orderly conduct of clinical nursing work.

[0003] Currently, most traditional limb restraint devices used in clinical practice use straps, buckles, or other structures to fix the patient's limbs to the bed or supporting structure, directly restricting the range of limb movement to reduce the possibility of self-injury or injury to others. These devices are relatively simple in structure, mainly relying on physical limitation to achieve restraint, and the restraint strength and range are mostly fixed. In clinical applications, they can meet basic safety protection needs and are a common type of assistive tool in current neurosurgical nursing.

[0004] However, traditional restraint devices often excessively restrict patients' limb movements. Even when patients are calm and can control their movements, they still cannot provide them with a reasonable space to move around. This can easily lead to negative emotions such as irritability and anxiety due to limited mobility, which may exacerbate emotional fluctuations and increase the difficulty of care. Summary of the Invention

[0005] The purpose of this invention is to provide an auxiliary restraint device to solve the problems mentioned in the background art.

[0006] The objective of this invention can be achieved through the following technical solutions: A preferred auxiliary restraint device includes a support plate, one end of which is rotatably connected to a rotating shaft, one end of which is fixedly connected to a first reel, a central connecting rope is sleeved on the outer periphery of the first reel, one end of which is provided with a fixing rope, one end of which is rotatably connected to a second reel, a traction rope is sleeved on the outer periphery of the second reel, and a lifting plate is fixedly connected to the bottom of the traction rope. One end of the support plate is provided with a bipolar limiting component, which includes a monitoring unit for monitoring the winding and unwinding speed of the traction rope and an adjustment unit for limiting the winding length of the traction rope. The monitoring unit includes a monitoring frame, a contact roller, and a photoelectric sensor, and the adjustment unit includes an electric push rod and a contact frame. The monitoring unit uses an abutment roller to follow the rotation of the traction rope and a photoelectric sensor to monitor the rotation speed of the abutment roller, thereby determining the patient's limb activity status. Based on the judgment result of the monitoring unit, the adjustment unit drives the abutment frame through an electric actuator to limit the winding length of the traction rope, thereby dynamically controlling the extendable state of the intermediate rope to adapt to the limb activity needs of the patient under different emotional states.

[0007] Preferably, the bipolar limiting component includes guide grooves symmetrically formed at one end of the support plate, guide sliders slidably connected inside the guide grooves, equipment mounting plates fixedly connected to one end of the two guide sliders, a pair of slide rods symmetrically fixedly connected to one side of the equipment mounting plate, a lifting plate slidably connected to the slide rods, and a return spring sleeved on the outer periphery of the slide rods, with the two ends of the return springs abutting against the equipment mounting plate and the lifting plate respectively.

[0008] Preferably, the bipolar limiting assembly further includes an electric actuator fixedly connected to one end of the equipment mounting plate. The electric actuator is horizontally arranged along the length direction of the equipment mounting plate. An abutment frame is fixedly connected to the output end of the electric actuator. The abutment frame is sleeved on the outer periphery of the traction rope. The electric actuator can drive the abutment frame to move along the length direction of the equipment mounting plate to limit the winding length of the traction rope.

[0009] Preferably, the bipolar limiting assembly further includes a monitoring frame fixedly connected to one end of the equipment mounting plate. The monitoring frame is symmetrically rotatably connected to an abutment roller. An elastic rubber sleeve is fitted around the outer periphery of the abutment roller. The traction rope passes between the two abutment rollers and forms elastic abutment with the elastic rubber sleeve. A photoelectric sensor is symmetrically arranged at one end of the monitoring frame. The shaft end of the contact roller passes through the monitoring frame and is fixedly connected to the detection end of the photoelectric sensor. A hazard signal indicator is symmetrically fixedly connected to the top of the support plate. The photoelectric sensor is electrically connected to the electric push rod and the hazard signal indicator. When the photoelectric sensor detects that the rotation speed of the contact roller exceeds the preset threshold, its output signal controls the electric push rod to drive the contact frame to move down and controls the danger signal indicator to light up red. When the rotation speed is lower than the preset threshold, the danger signal indicator lights up green.

[0010] Preferably, the bipolar limiting assembly further includes a first bevel gear fixedly connected to the end of the rotating shaft, and a second bevel gear fixedly connected to the end of the traction rope. The first bevel gear is set at 45° relative to the second bevel gear, and the first bevel gear meshes with the second bevel gear. The meshing of the first bevel gear and the second bevel gear enables the synchronous winding and unwinding of the first reel and the second reel, ensuring the consistency of the movement of the intermediate rope and the traction rope.

[0011] Preferably, one end of the support plate is provided with a lifting slide groove, a lifting slider is slidably connected inside the lifting slide groove, the lifting slider is fixedly connected to the equipment mounting plate, and a lifting screw is rotatably connected inside the lifting slide groove, the lifting screw is threadedly connected to the lifting slider. Rotating the lifting screw can drive the lifting slider to slide along the lifting groove, thereby adjusting the position of the equipment mounting plate to suit the usage needs of patients with different limb lengths.

[0012] Preferably, a third bevel gear is fixedly connected to the bottom of the lifting screw, and a fourth bevel gear that meshes with the third bevel gear is rotatably connected inside the support plate. One end of the support plate is provided with an installation groove, and the shaft end of the fourth bevel gear extends into the interior of the installation groove and is fixedly connected with a knob. Rotating the knob drives the fourth bevel gear to rotate, which in turn drives the lifting screw to rotate via the third bevel gear, thus enabling convenient adjustment of the equipment mounting plate position.

[0013] Preferably, the top of the support plate is rotatably connected to an anti-wear roller, which rolls and fits against the center rope to reduce wear during the winding and unwinding process of the center rope. One end of the center rope is fixedly connected to a buckle, and the end of the fixing rope facing the center rope is fixedly connected to a medical magnetic lock that matches the buckle. The medical magnetic lock and the buckle are engaged by magnetic attraction, realizing a detachable connection between the center rope and the fixing rope.

[0014] Preferably, a Velcro wristband is fixedly connected to the end of the fixing rope away from the center rope. A Velcro hook is fixedly connected to the outer periphery of the Velcro wristband. A Velcro fleece is adhered to the outer periphery of the Velcro hook. A heat patch is fixedly connected to the outer periphery of the Velcro fleece, for providing warmth to the patient's wrist in a low-temperature environment.

[0015] Preferably, the top of the support plate is fixedly connected with an inverted L-shaped hook, which is used to hang the auxiliary restraint device on the bed rail. One end of the support plate is symmetrically threaded with a locking screw. One end of the locking screw passes through the support plate and extends into the interior of the inverted L-shaped hook. Tightening the locking screw can enhance the connection stability between the inverted L-shaped hook and the bed rail.

[0016] The beneficial effects of this invention are: 1. This invention utilizes a bipolar limiting component. When the patient is in a stable emotional state, the reset spring pushes the lifting plate downwards, and in conjunction with the 45° meshing transmission of the first and second bevel gears, the connecting rope and the fixing rope are synchronously retracted and extended with slight limb movements, preserving reasonable range of motion. However, when the patient is agitated, the rotation speed of the abutment roller exceeds the threshold. At this time, the electric actuator drives the abutment frame to limit the winding of the traction rope, thereby effectively reducing the negative emotions caused by limited movement when the patient is calm and reducing the difficulty of nursing care.

[0017] 2. This invention utilizes the combined use of a monitoring unit and an adjustment unit. As the contact roller within the monitoring frame rotates with the traction rope, a photoelectric sensor monitors the rotation speed in real time to determine the patient's condition. A low rotation speed indicates that the patient is emotionally stable, at which point the danger signal indicator light illuminates green, and restraint is not initiated. Conversely, a high rotation speed indicates that the patient is agitated, immediately triggering the electric actuator to restrict the traction rope from winding up, and simultaneously illuminating a red light to warn medical personnel. This facilitates a rapid restraint response based on the patient's emotional state, thereby improving restraint safety.

[0018] 3. This invention, through the combined use of lifting slides, lifting screws, and knobs, allows for adjustment of the device mounting plate height to accommodate patients with different limb lengths. The 45° angle between the first and second bevel gears ensures that the rope naturally faces the bedridden patient's limbs, avoiding discomfort caused by improper angles. Furthermore, the inverted L-shaped hook and locking screw facilitate the device's fixation to different bed rails, while the medical magnetic lock and buckle enable quick disassembly and replacement of the fixing rope, enhancing its flexibility of use. Attached Figure Description

[0019] 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, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 This is a schematic diagram of the overall structure of the auxiliary restraint device in this invention; Figure 2 This is a side view of the auxiliary restraint device in this invention; Figure 3 This is a schematic diagram of the front structure of the device mounting plate in this invention; Figure 4 This is a schematic diagram of the back structure of the device mounting plate in this invention; Figure 5 This is a schematic diagram of the internal structure of the monitoring frame in this invention; Figure 6 This is a schematic diagram of the back structure of the support plate in this invention; Figure 7 This is a schematic diagram showing the connection relationship between the intermediate rope and the fixed rope in this invention; Figure 8 This is a three-dimensional structural diagram of the Velcro wristband in this invention; The attached diagram is labeled as follows: 1. Support plate; 3. First reel; 4. Center rope; 5. Fixing rope; 6. Second reel; 7. Traction rope; 8. Lifting plate; 9. Guide chute; 10. Guide slider; 11. Equipment mounting plate; 12. Slide rod; 13. Return spring; 14. Electric push rod; 15. Contact frame; 16. Monitoring frame; 17. Contact roller; 18. Photoelectric sensor; 19. Danger signal indicator; 20. First bevel gear; 21. Second bevel gear; 22. Lifting chute; 23. Lifting slider; 24. Lifting screw; 25. Third bevel gear; 26. Fourth bevel gear; 27. Mounting slot; 28. Knob; 29. ​​Anti-wear roller; 30. Buckle; 31. Medical magnetic lock; 32. Velcro wristband; 33. Velcro hook side; 34. Velcro fleece side; 35. Heat patch; 36. Inverted L-shaped hook; 37. Locking screw. Detailed Implementation

[0020] 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. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] An auxiliary restraint device, such as Figures 1-5 As shown, it includes a support plate 1, one end of which is rotatably connected to a rotating shaft 2, one end of which is fixedly connected to a first reel 3, a central connecting rope 4 is sleeved on the outer periphery of the first reel 3, one end of the central connecting rope 4 is provided with a fixing rope 5, one end of the support plate 1 is rotatably connected to a second reel 6, the outer periphery of the second reel 6 is sleeved with a traction rope 7, and the bottom of the traction rope 7 is fixedly connected to a lifting plate 8; One end of the support plate 1 is provided with a bipolar limiting component. The bipolar limiting component includes a monitoring unit for monitoring the winding and unwinding speed of the traction rope 7, and an adjustment unit for limiting the winding length of the traction rope 7. The monitoring unit includes a monitoring frame 16, an abutment roller 17, and a photoelectric sensor 18. The adjustment unit includes an electric push rod 14 and an abutment frame 15. The monitoring unit uses the contact roller 17 to follow the rotation of the traction rope 7 and the photoelectric sensor 18 to monitor the rotation speed of the contact roller 17 to determine the patient's limb activity status. Based on the judgment result of the monitoring unit, the adjustment unit drives the contact frame 15 through the electric push rod 14 to limit the winding length of the traction rope 7, thereby dynamically controlling the extendable state of the connecting rope 4 to adapt to the limb activity needs of the patient under different emotional states. The bipolar limiting component includes guide grooves 9 symmetrically opened at one end of the support plate 1. Guide sliders 10 are slidably connected inside the guide grooves 9. Equipment mounting plate 11 is fixedly connected to one end of the two guide sliders 10. A pair of slide rods 12 are symmetrically fixedly connected to one side of the equipment mounting plate 11. Lifting plate 8 is slidably connected to slide rods 12. Return springs 13 are sleeved on the outer periphery of slide rods 12. The two ends of return springs 13 abut against the equipment mounting plate 11 and lifting plate 8 respectively. Furthermore, the bipolar limiting assembly also includes an electric push rod 14 fixedly connected to one end of the equipment mounting plate 11. The electric push rod 14 is horizontally arranged along the length direction of the equipment mounting plate 11. The output end of the electric push rod 14 is fixedly connected to an abutment frame 15. The abutment frame 15 is sleeved on the outer periphery of the traction rope 7. The electric push rod 14 can drive the abutment frame 15 to move along the length direction of the equipment mounting plate 11 to limit the winding length of the traction rope 7. Furthermore, the bipolar limiting assembly also includes a monitoring frame 16 fixedly connected to one end of the equipment mounting plate 11. The monitoring frame 16 is symmetrically rotatably connected to an abutment roller 17. An elastic rubber sleeve is fitted around the outer periphery of the abutment roller 17. The traction rope 7 passes between the two abutment rollers 17 and forms elastic abutment with the elastic rubber sleeve. A photoelectric sensor 18 is symmetrically arranged at one end of the monitoring frame 16. The shaft end of the contact roller 17 passes through the monitoring frame 16 and is fixedly connected to the detection end of the photoelectric sensor 18. A hazard signal indicator light 19 is symmetrically fixedly connected to the top of the support plate 1. The photoelectric sensor 18 is electrically connected to the electric push rod 14 and the hazard signal indicator light 19. When the photoelectric sensor 18 detects that the rotation speed of the contact roller 17 exceeds the preset threshold, its output signal controls the electric push rod 14 to drive the contact frame 15 to move down and controls the danger signal indicator 19 to light up red. When the rotation speed is lower than the preset threshold, the danger signal indicator 19 lights up green. Furthermore, the bipolar limiting assembly also includes a first bevel gear 20 fixedly connected to the shaft end of the rotating shaft 2, and a second bevel gear 21 fixedly connected to the shaft end of the traction rope 7. The first bevel gear 20 is set at 45° relative to the second bevel gear 21, and the first bevel gear 20 meshes with the second bevel gear 21. The meshing of the first bevel gear 20 and the second bevel gear 21 enables the synchronous winding and unwinding of the first reel 3 and the second reel 6, ensuring the consistency of the movement of the intermediate rope 4 and the traction rope 7.

[0022] When in use, when the patient is calm and the range of limb movement is small, the return spring 13 will push the lifting plate 8 to move downward along the length of the slide bar 12 by its own elasticity. At this time, the slight movement of the patient's limb will pull the fixed rope 5 and the connecting rope 4, causing the first reel 3 to rotate. The first reel 3 transmits power to the second bevel gear 21 at a transmission angle of 45° through the first bevel gear 20 on the rotating shaft 2, which simultaneously drives the second reel 6 to rotate, so that the second reel 6 can realize the winding and unwinding of the traction rope 7. At the same time, the winding of the traction rope 7 will pull the lifting plate 8 to move upward along the slide bar 12, compress the return spring 13 to shrink and deform, and when the traction rope 7 passes between the two abutment rollers 17, it will drive the abutment rollers 17 to rotate slowly. The photoelectric sensor 18 detects that the rotation speed of the abutment rollers 17 is low, and controls the danger signal indicator 19 to light up green, indicating that the patient's condition is stable, and at this time the patient's limbs maintain a certain range of motion, which can reduce the generation of agitation. When the patient's mood turns manic, the range of motion of the limbs increases, which will quickly pull the fixed rope 5 and the intermediate rope 4, causing the first reel 3 and the second reel 6 to rotate faster. The winding and unwinding speed of the traction rope 7 will increase accordingly, driving the contact roller 17 to rotate rapidly. At this time, the photoelectric sensor 18 detects that the rotation speed of the contact roller 17 exceeds the preset threshold and will immediately output a signal to control the electric push rod 14 to start, driving the contact frame 15 to move down along the length of the equipment mounting plate 11. The contact frame 15 forms a block on the lifting plate 8, limiting the winding length of the traction rope 7. At the same time, the danger signal indicator 19 lights up red to remind medical staff that the patient's condition is abnormal. During this process, the meshing of the first bevel gear 20 and the second bevel gear 21 always ensures that the first reel 3 and the second reel 6 move synchronously, ensuring that the extendable state of the connecting rope 4 can be adjusted in time according to the restriction of the traction rope 7, avoiding self-injury or injury to others caused by the patient's uncontrolled limb movement. In addition, since the first bevel gear 20 and the second bevel gear 21 mesh at 45°, the connecting rope 4 and the fixing rope 5 are naturally at 45° towards the patient's limb when lying down, so that there will be no vertical friction with the patient's skin, and the patient's limb will not be forced to deviate due to improper rope angle.

[0023] like Figures 1-4 and Figure 6 As shown, a lifting slide groove 22 is provided at one end of the support plate 1. A lifting slider 23 is slidably connected inside the lifting slide groove 22. The lifting slider 23 is fixedly connected to the equipment mounting plate 11. A lifting screw 24 is rotatably connected inside the lifting slide groove 22. The lifting screw 24 is threadedly connected to the lifting slider 23. By rotating the lifting screw 24, the lifting slider 23 can be driven to slide along the lifting slide groove 22, thereby adjusting the position of the equipment mounting plate 11 to suit the usage needs of patients with different limb lengths. Among them, the bottom of the lifting screw 24 is fixedly connected to the third bevel gear 25, and the inside of the support plate 1 is rotatably connected to the fourth bevel gear 26 that meshes with the third bevel gear 25. One end of the support plate 1 is provided with an installation groove 27, and the shaft end of the fourth bevel gear 26 extends into the inside of the installation groove 27 and is fixedly connected to the knob 28. Rotating the knob 28 can drive the fourth bevel gear 26 to rotate, which in turn drives the lifting screw 24 to rotate via the third bevel gear 25, thus enabling convenient adjustment of the position of the equipment mounting plate 11.

[0024] When using the device, when dealing with patients with different limb lengths, the height of the device mounting plate 11 needs to be adjusted to match the traction range of the intermediate rope 4 and the fixed rope 5. At this time, medical staff can put their hands into the mounting groove 27 and turn the knob 28. The knob 28 drives the fourth bevel gear 26 to rotate. Since the fourth bevel gear 26 meshes with the third bevel gear 25, the third bevel gear 25 will rotate along with it and drive the lifting screw 24 fixedly connected to it to rotate in the lifting slide 22. When the lifting screw 24 rotates, the lifting slider 23, which is threadedly connected to the lifting screw 24, slides up and down along the length of the lifting groove 22. The lifting slider 23 is fixedly connected to the equipment mounting plate 11, so the equipment mounting plate 11 moves synchronously with the lifting slider 23. After adjusting the equipment mounting plate 11 to a suitable height according to the length of the patient's limb, the knob 28 is stopped. At this time, the intermediate rope 4 and the fixed rope 5 are in a 45° orientation, which can just fit the position of the patient's wrist or hand. The restraint will not fail due to the rope being too long, nor will the patient's limb be too tight due to the rope being too short. In addition, the positions of the slide bar 12, lifting plate 8, electric push rod 14 and other components on the equipment mounting plate 11 are adjusted synchronously to ensure that the winding and unwinding of the traction rope 7 can match the range of motion of the patient's limb.

[0025] like Figure 1 , Figure 2 and Figures 6-8 As shown, the top of the support plate 1 is rotatably connected to an anti-wear roller 29, which rolls and fits against the middle connecting rope 4 to reduce wear during the winding and unwinding process of the middle connecting rope 4. One end of the middle connecting rope 4 is fixedly connected to a buckle 30, and the end of the fixing rope 5 facing the middle connecting rope 4 is fixedly connected to a medical magnetic lock buckle 31 that is compatible with the buckle 30. The medical magnetic lock buckle 31 and the buckle 30 are fastened by magnetic attraction, realizing the detachable connection between the middle connecting rope 4 and the fixing rope 5. Among them, the end of the fixing rope 5 away from the middle connecting rope 4 is fixedly connected to the Velcro wrist sleeve 32, the outer periphery of the Velcro wrist sleeve 32 is fixedly connected to the Velcro hook surface 33, the outer periphery of the Velcro hook surface 33 is attached to the Velcro fleece surface 34, and the outer periphery of the Velcro fleece surface 34 is fixedly connected to the heat patch 35, which is used to provide warmth for the patient's wrist in a low temperature environment. Furthermore, an inverted L-shaped hook 36 is fixedly connected to the top of the support plate 1. The inverted L-shaped hook 36 is used to hang the auxiliary restraint device on the bed rail. A locking screw 37 is symmetrically threaded to one end of the support plate 1. One end of the locking screw 37 passes through the support plate 1 and extends into the interior of the inverted L-shaped hook 36. Tightening the locking screw 37 can enhance the connection stability between the inverted L-shaped hook 36 and the bed rail.

[0026] When using it, first hang the entire auxiliary restraint device on the bed railing using the inverted L-shaped hook 36, then tighten the locking screw 37 at one end of the support plate 1 so that one end of the locking screw 37 presses against the railing. Then, put the patient's wrist into the Velcro wristband 32, ensuring that the wristband fits snugly but is not tight. If the ambient temperature is low, the warm patch 35 on the outer periphery of the Velcro fleece 34 can be used to keep the patient's wrist warm and reduce the discomfort caused by low temperature. If it is necessary to replace the fixing rope 5 or the Velcro wristband 32, the medical magnetic lock 31 at one end of the fixing rope 5 can be pulled directly to separate the magnetic lock from the buckle 30 at one end of the connecting rope 4, and the fixing rope 5 can be removed from the device. When replacing the new fixing rope 5, simply align the medical magnetic lock 31 of the new fixing rope 5 with the buckle 30, and the magnetic force will complete the fastening. During the winding and unwinding process of the intermediate connecting rope 4, the anti-wear roller 29 on the top of the support plate 1 rolls and adheres to the intermediate connecting rope 4. When the intermediate connecting rope 4 moves, it will drive the anti-wear roller 29 to rotate, which will convert the sliding friction between the intermediate connecting rope 4 and the support plate 1 into rolling friction, effectively reducing the wear on the surface of the intermediate connecting rope 4 and extending the service life of the intermediate connecting rope 4. When the entire auxiliary restraint device needs to be moved, first loosen the locking screw 37 to separate the locking screw 37 from the bed rail, then remove the inverted L-shaped hook 36 from the rail, and you can move the device to the required position. When reinstalling, simply hang the inverted L-shaped hook 36 and tighten the locking screw 37 to meet the usage needs of different beds or treatment scenarios.

[0027] The working principle of the auxiliary restraint device provided by this invention is as follows: First, the equipment is hung on the bed railing by the inverted L-shaped hook 36 on the top of the support plate 1. The locking screw 37 is tightened to make the hook and the railing stably connected. Then, according to the length of the patient's limb, the knob 28 in the mounting groove 27 is turned to drive the fourth bevel gear 26 to rotate. Through the meshing with the third bevel gear 25, the lifting screw 24 is driven to rotate, so that the lifting slider 23 slides along the lifting groove 22, thereby adjusting the height of the equipment mounting plate 11. This ensures that the connecting rope 4 and the fixing rope 5 can be oriented at 45° towards the patient's limb under the action of the first bevel gear 20 and the second bevel gear 21 meshing at 45°, which is suitable for the position of the patient's limb when lying down. Then, the patient's wrist is placed in the Velcro wristband 32. In low temperature environment, the warming patch 35 keeps the wrist warm. When the patient is calm and has a small range of limb movement, the return spring 13 pushes the lifting plate 8 down along the slide bar 12 with its elasticity. When the patient moves slightly, the traction fixing rope 5 and the middle connecting rope 4 drive the first reel 3 to rotate. The first reel 3 transmits power to the second bevel gear 21 at a 45° transmission angle through the first bevel gear 20 on the rotating shaft 2, which simultaneously drives the second reel 6 to rotate, thereby realizing the winding and unwinding of the traction rope 7. When the traction rope 7 is wound up, it pulls the lifting plate 8 to move upward, squeezing the reset spring 13 to contract and deform. At the same time, the traction rope 7 drives the contact roller 17 in the monitoring frame 16 to rotate slowly. The photoelectric sensor 18 detects that the rotation speed is lower than the preset threshold, controls the danger signal indicator 19 to turn green, and does not trigger the electric push rod 14 to move, thus preserving the patient's limb movement space and avoiding emotional agitation. When a patient loses control of their emotions, their limb movements increase, which quickly pulls the fixed rope 5 and the intermediate rope 4, causing the first reel 3 and the second reel 6 to rotate faster. The winding and unwinding speed of the traction rope 7 increases sharply, driving the contact roller 17 to rotate rapidly. When the photoelectric sensor 18 detects that the rotation speed exceeds the preset threshold, it immediately outputs a signal to control the electric push rod 14 to start, driving the contact frame 15 to move down along the equipment mounting plate 11 and the blocking lifting plate 8 to move up, limiting the winding length of the traction rope 7. At the same time, it controls the danger signal indicator 19 to light up red to warn medical staff. During this process, the 45° meshing of the first bevel gear 20 and the second bevel gear 21 always ensures that the two reels move synchronously. The extendable state of the middle connecting rope 4 is adjusted synchronously with the restraint of the traction rope 7 to avoid excessive movement of the patient's limbs causing self-injury or injury to others. At the same time, the 45° oriented rope buffers the impact force on the limbs and reduces skin friction damage. Furthermore, when the intermediate connecting rope 4 is wound up or unwound, the anti-wear roller 29 on the top of the support plate 1 rolls and fits against the intermediate connecting rope 4, converting sliding friction into rolling friction and reducing rope wear. At the same time, the intermediate connecting rope 4 and the fixed rope 5 are detachably connected to the medical magnetic lock 31 through the buckle 30, which facilitates replacement and maintenance.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. An auxiliary restraint device, characterized by: The utility model provides a kind of lifting device for patient, including support plate (1), one end of support plate (1) is rotatably connected with rotating shaft (2), one end of rotating shaft (2) is fixedly connected with first reel (3), the outer periphery of first reel (3) is equipped with middle rope (4), one end of middle rope (4) is provided with fixed rope (5), one end of support plate (1) is rotatably connected with second reel (6), the outer periphery of second reel (6) is equipped with traction rope (7), the bottom of traction rope (7) is fixedly connected with lifting plate (8); One end of the support plate (1) is provided with a bipolar limiting assembly, which comprises a monitoring unit for monitoring the winding and unwinding speed of the traction rope (7), and an adjusting unit for limiting the winding length of the traction rope (7), the monitoring unit comprises a monitoring frame (16), a contact roller (17) and a photoelectric sensor (18), and the adjusting unit comprises an electric push rod (14) and a contact frame (15); The monitoring unit rotates with the traction rope (7) through the contact roller (17), and the photoelectric sensor (18) monitors the rotating speed of the contact roller (17) to determine the activity state of the patient's limbs. According to the determination result of the monitoring unit, the adjusting unit drives the contact frame (15) to limit the winding length of the traction rope (7) through the electric push rod (14), thereby dynamically controlling the extendable state of the middle rope (4) and adapting to the limb activity demand of the patient under different emotions.

2. A secondary restraint appliance according to claim 1, wherein: The bipolar limiting assembly comprises a guide sliding groove (9) symmetrically opened at one end of the support plate (1), a guide sliding block (10) slidably connected inside the guide sliding groove (9), an equipment mounting plate (11) fixedly connected at one end of the two guide sliding blocks (10), a pair of slide rods (12) symmetrically fixedly connected on one side of the equipment mounting plate (11), the lifting plate (8) and the slide rods (12) are slidably connected, a return spring (13) is sleeved on the outer periphery of the slide rod (12), and the two ends of the return spring (13) are in contact with the equipment mounting plate (11) and the lifting plate (8) respectively.

3. A secondary restraint appliance according to claim 1, wherein: The bipolar limiting assembly further comprises an electric push rod (14) fixedly connected at one end of the equipment mounting plate (11), which is horizontally arranged along the length direction of the equipment mounting plate (11), and the output end of the electric push rod (14) is fixedly connected with a contact frame (15) sleeved on the outer periphery of the traction rope (7). The electric push rod (14) can drive the contact frame (15) to move along the length direction of the equipment mounting plate (11) to limit the winding length of the traction rope (7).

4. The secondary restraint appliance of claim 1, wherein: The bipolar limiting assembly further comprises a monitoring frame (16) fixedly connected at one end of the equipment mounting plate (11), and the monitoring frame (16) is symmetrically rotatably connected with a contact roller (17) inside. The outer periphery of the contact roller (17) is sleeved with an elastic rubber sleeve, the traction rope (7) passes between the two contact rollers (17), and forms elastic contact with the elastic rubber sleeve. One end of the monitoring frame (16) is symmetrically provided with a photoelectric sensor (18), the shaft end of the rubbing roller (17) passes through the monitoring frame (16) and is fixedly connected with the detection end of the photoelectric sensor (18), the top of the support plate (1) is fixedly connected with a danger signal indicator light (19) in symmetry, and the photoelectric sensor (18) is electrically connected with the electric push rod (14) and the danger signal indicator light (19).

5. The secondary restraint appliance of claim 1, wherein: The double-pole limiting assembly further comprises a first bevel gear (20) fixedly connected to the shaft end of the rotating shaft (2), and a second bevel gear (21) fixedly connected to the shaft end of the traction rope (7), wherein the first bevel gear (20) is arranged at an angle of 45° with respect to the second bevel gear (21), and the first bevel gear (20) is engaged with the second bevel gear (21).

6. A secondary restraint appliance according to claim 1, wherein: One end of the support plate (1) is provided with a lifting sliding groove (22), and a lifting sliding block (23) is slidably connected in the lifting sliding groove (22). The lifting sliding block (23) is fixedly connected with the equipment mounting plate (11). A lifting screw (24) is rotatably connected in the lifting sliding groove (22), and the lifting screw (24) is threadedly connected with the lifting sliding block (23).

7. A secondary restraint appliance according to claim 6, wherein: The bottom of the lifting screw (24) is fixedly connected with a third bevel gear (25), and the inside of the support plate (1) is rotatably connected with a fourth bevel gear (26) engaged with the third bevel gear (25). One end of the support plate (1) is provided with a mounting groove (27), and the shaft end of the fourth bevel gear (26) extends into the inside of the mounting groove (27) and is fixedly connected with a knob (28).

8. The supplemental restraint apparatus of claim 1 wherein: The top of the support plate (1) is rotatably connected with an anti-abrasion roller (29), and the anti-abrasion roller (29) is in rolling contact with the middle connecting rope (4). One end of the middle connecting rope (4) is fixedly connected with a clasp (30), and one end of the fixed rope (5) facing the middle connecting rope (4) is fixedly connected with a medical magnetic lock (31) matched with the clasp (30).

9. A secondary restraint appliance according to claim 8, wherein: One end of the fixed rope (5) away from the middle connecting rope (4) is fixedly connected with a magic tape wrist sleeve (32), and the outer periphery of the magic tape wrist sleeve (32) is fixedly connected with a magic tape hook face (33). The outer periphery of the magic tape hook face (33) is adhered with a magic tape fleece face (34), and the outer periphery of the magic tape fleece face (34) is fixedly connected with a warm tape (35) for providing warmth to the patient's wrist in a low-temperature environment.

10. The secondary restraint appliance of claim 1, wherein: The top of the support plate (1) is fixedly connected with an inverted L-shaped hook (36), and one end of the support plate (1) is symmetrically screw-connected with a locking screw (37). One end of the locking screw (37) passes through the support plate (1) and extends into the inside of the inverted L-shaped hook (36).

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