CN213697398U

CN213697398U - Multifunctional lower limb lifting device

Info

Publication number: CN213697398U
Application number: CN202021599329.1U
Authority: CN
Inventors: 葛新宝; 王晓天; 徐江
Original assignee: Anhui Provincial Hospital
Current assignee: Anhui Provincial Hospital First Affiliated Hospital Of Ustc
Priority date: 2020-08-05
Filing date: 2020-08-05
Publication date: 2021-07-16
Anticipated expiration: 2030-08-05

Abstract

The utility model relates to a device is raised to multi-functional low limbs, including raising the unit, raise the unit and include the chassis and set up the supporting pad that just is used for supporting low limbs on the chassis, the supporting pad rotates with the chassis to be connected, raises the unit and still including setting up the adjustment mechanism who is used for adjusting the relative chassis turned angle of supporting pad between chassis and supporting pad. The utility model discloses an adjustment mechanism's setting is adjusted the turned angle of the relative chassis of supporting pad to highly adjusting raising of supporting pad to low limbs, not only can realize carrying out effectual processing of raising to patient's low limbs, can also be according to the change of the condition of hurting by the patient, at any time to the height that patient's low limbs raised carry out quick effectual regulation, the better treatment of carrying on of supplementary doctor helps the better recovering of patient.

Description

Multifunctional lower limb lifting device

Technical Field

The utility model belongs to the field of medical equipment, concretely relates to multi-functional low limbs lifts device.

Background

In the treatment process of limb swelling caused by a plurality of diseases such as vein and lymphatic diseases of lower limb or trauma, the lower limb of a patient needs to be lifted for treatment, so as to facilitate venous return of the patient and relieve swelling. And to the recovery in-process of low limbs postoperative, along with the constantly changing of patient's injury, need timely effectual height to raising to adjust. And after a plurality of lower limb operations, the patient can walk off the bed after being bedridden for a long time due to long recovery time, and during the period, the patient can not carry out effective rehabilitation training on the affected limb, so that the postoperative recovery time is prolonged, and the normal physiological life later can be seriously influenced.

In the prior art, a bone traction assembly is developed, which is disclosed in chinese patent CN209091587U and includes a bone traction bow, a kirschner wire, a traction rope, a pulley frame, a traction pulley, a weight, a trapezoidal brown bracket, an L-shaped functional pad and a U-shaped bracket, wherein the brown bracket is located on a bed surface, and the upper surface of the brown bracket is an inclined surface; the functional cushion is positioned above the Brown bracket and comprises a lower supporting cushion for supporting the legs of the patient and an upper supporting cushion for supporting the sole of the foot of the patient; the U-shaped support is positioned on the bed surface and fixed with the bed base, the lower limbs, the bone traction bow, the Kirschner wire, the Brown support and the functional pad of the patient are positioned in the U-shaped support, and the U-shaped support is connected with the protective cover. Although this bone traction assembly can play the effect of raising to the low limbs, to the patient that some postoperative need recover for a long time, along with the constantly changing of injury, can not in time effectual height to raising adjust, the demand that height was raised to quick effectual regulation. And after a plurality of lower limb operations, because the recovery time of the patient is very long, the padded lower limb is influenced by the material and the structure of the lower limb lifting pad for a long time, and unpredictable damage can be caused to the lower limb of the patient.

On the other hand, although the bone traction assembly also has a traction function, the weight of the weight is often fixed, the traction tension cannot be adjusted according to different patients or different patient conditions, and medical care personnel or patients cannot be reminded whether traction is overtime or overweight, so that the effect of rehabilitation training is affected.

Disclosure of Invention

The utility model aims to solve the technical problem that to prior art not enough, provide a device is raised to multi-functional low limbs of modified.

For solving the technical problem, the utility model discloses a following technical scheme:

the utility model provides a device is raised to low limbs, is including raising the unit, it includes the chassis and sets up to raise the unit just is used for supporting the supporting pad of low limbs on the chassis, the supporting pad with the chassis rotates to be connected, it still includes the setting to raise the unit and is in being used for adjusting between chassis and the supporting pad is relative chassis turned angle's adjustment mechanism, adjustment mechanism include a tip with the supporting pad rotates the support piece of connecting, sets up regulating plate and slip setting on the chassis are in slider on the regulating plate, another tip of support piece with the slider rotates to be connected, through the slider is in slip on the regulating plate is in order to adjust the supporting pad is relative the turned angle of chassis, adjustment mechanism still including being used for with slider and regulating plate relatively fixed's locking Assembly.

According to some implementation aspects of the present invention, a lateral portion of the support pad and the bottom frame are rotatably connected, and the rotation axis line of the two extends along the horizontal direction.

According to some embodiments of the utility model, the lateral part of chassis with the supporting pad rotates to be connected, the length direction of regulating plate with the chassis a lateral part to the direction that another lateral part of chassis extends is unanimous, the slider is followed the length direction of regulating plate slides the setting.

Further, adjustment mechanism is still including setting up on the chassis and being located the limiting plate of the relative both sides of regulating plate, each side the limiting plate is followed the length direction of regulating plate extends the setting, the slider slides and sets up two sides between the limiting plate.

According to some aspects of the present disclosure, the locking assembly includes a plurality of grooves disposed on the adjusting plate in sequence and protrusions disposed on the slider and capable of engaging with or disengaging from the grooves, the plurality of grooves are disposed on the adjusting plate in sequence along a sliding direction of the slider, when the protrusions engage with the grooves, the slider and the adjusting plate are fixed relative to each other to fix the supporting pad and the bottom frame relative to each other, and the protrusions and different grooves engage corresponding to different rotation angles of the supporting pad relative to the bottom frame; when the protruding part is separated from the groove, the sliding block can slide relative to the adjusting plate.

According to some implementation aspects of the present disclosure, the adjusting mechanism is provided with 2, 2 the adjusting mechanism is respectively provided on two opposite sides of the raising unit.

According to some embodiment aspects of the utility model, adjustment mechanism is still including fixed the setting U template on the supporting pad, support piece one end with the U template rotates to be connected, the both sides wall of U template is inwards sunken formation depressed part respectively along its length direction to reinforcing atress intensity.

According to some implementation aspects of the utility model, the supporting pad is in including the pad body and the setting that are used for supporting low limbs the pad body below just is used for supporting the backup pad body's backup pad, a lateral part of backup pad with the chassis rotates to be connected, it still establishes including the cover to raise the unit the outer cloth cover of supporting pad and chassis, the cloth cover still be used for with pad body and backup pad relatively fixed, adjustment mechanism sets up between backup pad and the chassis.

According to some embodiments of the utility model, the material of cloth cover is lycra, the material of filling up the body is the memory cotton.

According to some implementation aspects of the utility model, it is in still including setting up to raise the device baffle on the chassis and setting traction unit on the baffle, traction unit is including setting up pulley yoke, setting on the baffle are in fixed pulley, haulage rope and one or more balancing weight on the pulley yoke, a tip of haulage rope is used for linking to each other with low limbs, another tip is walked around behind the fixed pulley with balancing weight detachably connects.

According to some embodiments of the utility model, a lateral part of supporting pad with the chassis rotates to be connected, the baffle is close to another lateral part setting of supporting pad.

According to some embodiments of the invention, the traction unit further comprises an alarm mechanism provided on the traction rope and having an overtime alarm and an overweight alarm function.

Furthermore, the alarm mechanism comprises a tension sensor connected to the traction rope and used for measuring the stress change of the traction rope to obtain real-time tension, a controller connected with the tension sensor through a lead, a timing starting module connected with the controller through a lead, an alarm connected with the controller through a lead and a display module connected with the controller in a wired or wireless manner.

Furthermore, the display module comprises a time display screen, a tension display screen, a starting key for starting the timing starting module to start timing, a first plus-minus key for presetting time and a second plus-minus key for presetting tension, wherein the time display screen is used for displaying the preset time, and the tension display screen is used for displaying the preset tension and the real-time tension detected by the tension sensor.

Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages:

the utility model discloses a device is raised to low limbs's the unit of raising passes through adjustment mechanism's setting, adjusts the turned angle of the relative chassis of supporting pad to highly adjusting raising of low limbs to the supporting pad, not only can realize carrying out effectual processing of raising to patient's low limbs, do benefit to patient's venous blood backward flow, alleviate the swelling, can also carry out quick effectual regulation according to the change of patient's wounded situation to the height of raising patient's low limbs at any time, assist the better treatment of carrying on of doctor.

Drawings

Fig. 1 is a schematic structural view of a multifunctional lower limb lifting device according to an embodiment of the present invention (not shown in the cloth cover).

Fig. 2 is a schematic structural view of a lifting unit of the multifunctional lower limb lifting device according to an embodiment of the present invention.

Fig. 3 is a schematic structural view (showing an internal structure) of the raising unit of the multifunctional lower limb raising device according to an embodiment of the present invention.

Fig. 4 is a schematic perspective view of an adjusting mechanism of the multifunctional lower limb lifting device according to an embodiment of the present invention.

Fig. 5 is a schematic front view of an adjusting mechanism of the multifunctional lower limb lifting device according to an embodiment of the present invention.

Fig. 6 is a schematic structural view of an alarm mechanism of the multifunctional lower limb lifting device according to an embodiment of the present invention;

fig. 7 is a schematic structural view of a display module of the multifunctional lower limb lifting device according to an embodiment of the present invention;

fig. 8 is a schematic front view of a weight member of the multifunctional lower limb lifting device according to an embodiment of the present invention.

Fig. 9 to 10 are schematic perspective views of the weight member of the multifunctional lower limb lifting device according to an embodiment of the present invention at different angles.

Fig. 11 is a schematic view of a state of use of the multifunctional lower limb lifting device according to an embodiment of the present invention.

In the figure: 1. a raising unit;

11. cloth sheathing; 12. a chassis; 13. a support pad; 131. a pad body; 132. a support plate; 14. an adjustment mechanism; 141. a U-shaped plate; 142. a support member; 143. a slider; 144. an adjusting plate; 145. a limiting plate; 146. a groove; 147. a boss portion; 15. a baffle plate;

2. a traction unit;

21. an alarm mechanism; 211. a tension sensor; 212. a controller; 213. an alarm; 214. a display module; 214a, a time display screen; 214b, a pressure display screen; 214c, start key; 214d, a first add-subtract key; 214e and a second add-subtract key; 215. a timing starting module; 22. a hauling rope; 23. a pulley yoke; 24. a fixed pulley; 25. and a balancing weight.

Detailed Description

The invention is further described below with reference to the drawings in the specification:

the multifunctional lower limb lifting device shown in fig. 1-11 comprises a lifting unit 1 and a traction unit 2 arranged on the lifting unit 1.

Referring to fig. 2 to 3, the raising unit 1 includes a base frame 12, a support pad 13 disposed on the base frame 12 and used for supporting the lower limbs, and a cloth cover 11 sleeved outside the support pad 13 and the base frame 12, wherein a side portion of the support pad 13 is rotatably connected to the base frame 12, the support pad 13 includes a pad body 131 used for supporting the lower limbs and a support plate 132 disposed below the pad body 131 and used for supporting the pad body 131, specifically, a side portion of the support plate 132 is rotatably connected to the base frame 12, and the cloth cover 11 is further used for relatively fixing the pad body 131 and the support plate 132.

In this example, one side of the support plate 132 is pivotally connected to one side of the base frame 12, and the pivot axes of the two extend in the horizontal direction. If the support plate 132 is shaped as a quadrilateral, one of the four sides of the support plate 132 is pivotally connected to the base frame 12, such as by a hinge.

In order to fit the lower limbs of the patient, the upper surface of the pad body 131 is arc-shaped, the leg curve of human engineering is referred, the material is selected from memory cotton, the pad has proper softness, and the pad further has the advantages of air permeability and the like, so that the patient is guaranteed not to feel uncomfortable in the long-time use process. The cloth cover 11 is made of lycra, is white, can be very easily stretched, can be tightly attached to the outer surfaces of the pad body 131 and the bottom frame 12 after being recovered, has small binding force on the supporting pad 13, and can meet the rotation angle of the supporting pad 13 relative to the bottom frame 12 of 0-90 degrees.

The elevation unit 1 further comprises an adjustment mechanism 14 provided between the base frame 12 and the support plate 132 for adjusting the rotation angle of the support plate 132 with respect to the base frame 12. The number of the adjusting mechanisms 14 is 2, and the 2 adjusting mechanisms 14 are respectively arranged at the left and right opposite sides of the lifting unit 1.

Referring to fig. 4 to 5, the adjusting mechanism 14 includes a U-shaped plate 141 fixedly disposed on the supporting plate 132, a supporting member 142 having one end rotatably connected to the U-shaped plate 141, an adjusting plate 144 disposed on the base frame 12, and a sliding block 143 slidably disposed on the adjusting plate 144, wherein the other end of the supporting member 142 is rotatably connected to the sliding block 143, and the sliding block 143 slides on the adjusting plate 144 to adjust the rotation angle of the supporting plate 132 relative to the base frame 12. The length direction of the adjustment plate 144 coincides with the direction in which the side portion of the base frame 12 connected to the rotation of the support plate 132 extends toward the other side portion of the base frame 12, and the slider 143 is slidably disposed along the length direction of the adjustment plate 144.

The adjusting mechanism 14 further comprises a locking assembly for relatively fixing the sliding block 143 and the adjusting plate 144, the locking assembly comprises a plurality of grooves 146 sequentially distributed on the adjusting plate 144 along the length direction of the adjusting plate 144 and a protrusion 147 arranged on the sliding block 143 and capable of being matched with or separated from the grooves 146, when the protrusion 147 is matched with the grooves 146, the sliding block 143 and the adjusting plate 144 are relatively fixed to relatively fix the supporting pad 13 with the bottom frame 12, and the protrusion 147 is matched with different grooves 146 to correspond to different rotation angles of the supporting pad 13 with respect to the bottom frame 12; when the protrusion 147 is separated from the groove 146, the slider 143 can slide relative to the adjustment plate 144. Specifically, the boss 147 is provided on the lower surface of the slider 143.

The adjusting mechanism 14 further includes limiting plates 145 fixedly disposed on the base frame 12 and located at opposite sides of the adjusting plate 144, each of the limiting plates 145 extends along a length direction of the adjusting plate 144, and the sliding block 143 is slidably disposed between the two limiting plates 145.

In some embodiments, the two side walls of the U-shaped plate 141 are recessed inward along the length direction thereof to form a recessed portion to increase the stress strength, and the material is stainless steel; the supporting member 142 is a stainless steel plate; the material of the limiting plate 145 and the adjusting plate 144 is stainless steel, and the limiting plate 145 and the adjusting plate 144 may be integrally formed.

This raise unit 1 through the slip of slider 143 on regulating plate 144 to realize the turned angle of supporting pad 13 relative chassis 12, and then realize supporting pad 13 to the regulation of the height of raising of the low limbs of placing on supporting pad 13, as shown in fig. 11, supporting pad 13 is in the lowest position, when needing to raise supporting pad 13 height, only need to lift the other end of supporting pad 13 upwards with the hand, slider 143 slides on regulating plate 144, when slider 143 slides into recess 146, slider 143 is fixed relative to regulating plate 144, supporting pad 13 is fixed at a height, and when slider 143 slides into different recesses 146, the height is raised to the difference that corresponds supporting pad 13, in order to satisfy the demand of different heights that the patient needs, and when slider 143 was located recess 146, the atress of supporting pad 13 reached 20kg, be enough to support adult man's leg weight. When the support pad 13 needs to be adjusted from the high position to the low position, the protrusion 147 is separated from the groove 146 only by pressing the protrusion 147 with a hand, and then the other end of the support pad 13 is pressed downwards with a hand to slide the slider 143, so as to adjust the height of the support pad 13, or the other end of the support pad 13 is pressed with a hand with a force at least greater than 20kg, so that the protrusion 147 slides out of the groove 146.

Referring to fig. 1, the raising device further includes a baffle plate 15 fixedly disposed on the base frame 12 and disposed near the other end of the supporting pad 13, the traction unit 2 includes a pulley frame 23 disposed on the baffle plate 15, a fixed pulley 24 disposed on the pulley frame 23, a traction rope 22 and one or more counterweights 25, one end of the traction rope 22 is used for connecting with the lower limb, and the other end is detachably connected with the counterweights 25 after passing around the fixed pulley 24. The introduction of the fixed pulley 24 can realize the function of non-invasive traction and help the patient to relieve the tension and retraction of soft tissues at the fracture and dislocation.

In this example, referring to fig. 8 to 10, the opposite two sides of each weight block 25 are respectively provided with a connecting hole having an internal thread and a connecting column having an external thread and capable of being in threaded fit with the connecting hole, and the material of each weight block 25 is 304 stainless steel. The plurality of weight blocks 25 may be used cumulatively as needed.

In this example, the baffle 15 is a 304 steel plate, and is welded with the bottom frame 12 by argon arc welding through laser cutting, the bottom frame 12 is formed by welding a plurality of stainless steel square steels, an avoiding space is formed between adjacent square steels, the limiting plate 145 and the adjusting plate 144 of the adjusting mechanism 14 are arranged in the avoiding space, and when the supporting pad 13 of the lifting unit 1 is adjusted to the lowest position, the side wall of the U-shaped plate 141 of the adjusting mechanism 14 is also positioned in the avoiding space.

The traction unit 2 further comprises an alarm mechanism 21 which is arranged on the traction rope 22 and has overtime alarm and overweight alarm functions, and the alarm mechanism 21 is arranged between one end of the traction rope 22, which is used for being connected with the lower limb, and the fixed pulley 24.

Referring to fig. 6, the alarm mechanism 21 includes a tension sensor 211 connected to the traction rope 22 for detecting a change in the force applied to the traction rope 22, a controller 212 connected to the tension sensor 211 through a wire, a timing start module 215 connected to the controller 212 through a wire, an alarm 213 connected to the controller 212 through a wire, and a display module 214 connected to the controller 212 through a wire or wirelessly.

In this example, the tension sensor 211 is also called a resistance strain gauge sensor, and includes two tension transmitting portions, and the connection manner on the pulling rope 22 can be various, for example, the pulling rope 22 is divided into two sections, one section is used for connecting the lower limb to be pulled and one tension transmitting portion of the tension sensor 211, and the other section is used for connecting the other tension transmitting portion of the tension sensor 211 and the counterweight 25 after passing around the fixed pulley 24. After the pulling rope 22 is stressed, the tension sensor 211 converts the detected tension change into a digital signal, transmits the digital signal to the controller 212 for processing, and then displays the data on the display module 214 in real time through the display circuit design.

In this example, referring to fig. 7, the display module 214 includes a time display screen 214a, a tension display screen 214b, a start key 214c, a first add-subtract key 214d for presetting time, and a second add-subtract key 214e for presetting tension, the time display screen 214a can display preset time in minutes, and the tension display screen 214b can display real-time tension detected by the tension sensor 211 and can also display preset tension in kg.

In this example, the controller 212 is a single chip microcomputer, an overweight and overtime alarm program preset by a programmer is arranged in the controller, the overweight and overtime alarm program can be used for comparing the real-time tension on the traction rope 22 transmitted by the tension sensor 211 with a preset tension, if the detected real-time tension is greater than the preset tension, the controller 212 sends an instruction to the alarm 213, the alarm 213 works to alarm to remind a patient and medical personnel of adjusting the balance weight, and if the detected real-time tension is less than or equal to the preset tension, the alarm 213 does not work; the program can also be used to compare the single traction timing time transmitted by the timing starting module 215 with the preset time, if the single traction timing time is greater than the preset time, the controller 212 sends an instruction to the alarm 213, the alarm 213 works to give an alarm to remind the patient and the medical staff that the single traction is finished, and if the single traction timing time is less than or equal to the preset time, the alarm 213 does not work. The overtime alarm and the overweight alarm can adopt the same or different alarm modes, for example, the overweight alarm can emit a photoelectric alarm, and the overtime alarm is an acoustic alarm.

The specific working process of the traction unit 2 of this example: through the second add and subtract button 214e input and preset the pulling force, force sensor 211 carries out real-time pulling force sampling and demonstration to the balancing weight that hangs, and sampling interval time is 100ms, and the real-time pulling force of controller 212 to force sensor 211 conveying contrasts with presetting the pulling force, if the real-time pulling force that detects is greater than presetting the pulling force, controller 212 sends the instruction to alarm 213, and alarm 213 work is reported to the police, and medical personnel in time adjust the counter weight, do not report to the police until alarm 213. The preset time of single traction treatment is input through first plus-minus button 214d, then start key 214c is pressed, trigger timing start module 215 and begin single traction treatment timing, controller 212 compares the single traction timing time that timing start module 215 conveys with preset time, if it is greater than preset time to detect single traction timing time, then controller 212 sends the instruction to alarm 213, alarm 213 works and reports to the police, remind patient and medical personnel single traction treatment to end, so that medical personnel in time handle, help the safer rehabilitation training that carries out of patient.

This device is raised to multi-functional low limbs raises unit 1 through the rotation of supporting pad 13 and adjustment mechanism 14's setting, makes things convenient for the angle that patient's low limbs were placed, helps the patient with better posture rest and carry out the rehabilitation training. Meanwhile, the traction unit 2 is provided with an alarm mechanism 21 with overweight and overtime functions, and the tension borne by the traction rope 22 is adjusted by combining the quantity adjustment of the balancing weight 25, so that the single traction ending time can be timely known, and the patient can be helped to carry out rehabilitation training more safely.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, so as not to limit the protection scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. The utility model provides a device is raised to low limbs, is including raising the unit, it includes the chassis and sets up to raise the unit just is used for supporting the supporting pad of low limbs on the chassis, its characterized in that: the supporting pad with the chassis rotates to be connected, it is in still including setting up to raise the unit be used for adjusting between chassis and the supporting pad is relative chassis turned angle's adjustment mechanism, adjustment mechanism include one end with supporting piece, the setting that the supporting pad rotates to be connected are in regulating plate and slip setting on the chassis are in slider on the regulating plate, another end of supporting piece with the slider rotates to be connected, through the slider is in slip on the regulating plate is in order to adjust the supporting pad is relative the turned angle of chassis, adjustment mechanism still including be used for with slider and regulating plate relatively fixed's locking subassembly.

2. The lower extremity elevation device of claim 1, wherein: one side part of the supporting pad is rotatably connected with the bottom frame, and the rotating axes of the supporting pad and the bottom frame extend along the horizontal direction.

3. The lower extremity elevation device of claim 2, wherein: one lateral part of chassis with the supporting pad rotates to be connected, the length direction of regulating plate with the lateral part of chassis to the direction that another lateral part of chassis extends is unanimous, the slider is followed the length direction slip setting of regulating plate.

4. The lower extremity elevation device of claim 1, wherein: the locking assembly comprises a plurality of grooves which are sequentially distributed on the adjusting plate and a plurality of protrusions which are arranged on the sliding block and can be matched with or separated from the grooves, the grooves are sequentially distributed on the adjusting plate along the sliding direction of the sliding block, when the protrusions are matched with the grooves, the sliding block and the adjusting plate are relatively fixed to relatively fix the supporting pad and the bottom frame, and the protrusions are matched with different grooves to correspond to different rotating angles of the supporting pad relative to the bottom frame; when the protruding part is separated from the groove, the sliding block can slide relative to the adjusting plate.

5. The lower extremity elevation device of claim 1, wherein: the adjusting mechanism is provided with 2, and the 2 adjusting mechanisms are respectively arranged at two opposite sides of the lifting unit.

6. The lower extremity elevation device of claim 1, wherein: the supporting pad is in including the pad body and the setting that are used for supporting low limbs the pad body below just is used for supporting the backup pad body's backup pad, a lateral part of backup pad with the chassis rotates to be connected, it still establishes including the cover to raise the unit the outer cloth cover of supporting pad and chassis, the cloth cover still be used for with pad body and backup pad relatively fixed, adjustment mechanism sets up between backup pad and the chassis.

7. The lower limb elevation device of claim 6 wherein: the cloth cover is made of Lycra, and the pad body is made of memory cotton.

8. The lower limb lifting device according to any one of claims 1 to 7, wherein: raise the device and still including setting up baffle and setting on the chassis are in traction unit on the baffle, traction unit is including setting up pulley yoke on the baffle, setting are in fixed pulley, haulage rope and one or more balancing weight on the pulley yoke, a tip of haulage rope is used for linking to each other with low limbs, another tip is walked around behind the fixed pulley with balancing weight detachably connects.

9. The lower limb elevation device of claim 8 wherein: the baffle is close to another lateral part setting of supporting pad.

10. The lower limb elevation device of claim 8 wherein: the traction unit also comprises an alarm mechanism which is arranged on the traction rope and has overtime alarm and overweight alarm functions.

11. The lower extremity elevation device of claim 10, wherein: the alarm mechanism comprises a tension sensor connected to the traction rope and used for measuring stress changes of the traction rope to obtain real-time tension, a controller connected with the tension sensor through a wire, a timing starting module connected with the controller through a wire, an alarm connected with the controller through a wire and a display module connected with the controller in a wired or wireless mode.

12. The lower extremity elevation device of claim 11, wherein: the display module comprises a time display screen, a tension display screen, a starting key for starting the timing starting module to start timing, a first plus-minus key for presetting time and a second plus-minus key for presetting tension, wherein the time display screen is used for displaying the preset time, and the tension display screen is used for displaying the preset tension and the real-time tension detected by the tension sensor.