CN217090749U - Device for simulating load of lower limbs - Google Patents

Abstract

The utility model relates to a device for low limbs simulation is born a burden, including elevating system and supporting mechanism, the forced induction mechanism and the control circuit system of electricity connection. The lifting mechanism includes a housing assembly, a power assembly, and a rail assembly. The guide rail assembly is driven by the power assembly to do reciprocating linear motion along the horizontal direction, and the supporting mechanism can move along with the motion of the guide rail assembly. The pressure sensing mechanism comprises a pressure sensor and a feedback module, and the control circuit system comprises a display and a processor which are electrically connected. The processor is electrically connected with the feedback module and the display, processes the pressure data transmitted by the feedback module and transmits the pressure data to the display for displaying. The device for simulating the load of the lower limbs of the utility model is durable, simple and convenient in use and suitable for patients with different body types; can preset the threshold according to patient's weight of difference, give the controllable different pressures of patient's lower limbs to can feed back pressure data often in the inspection process.

Description

Device for simulating load of lower limbs

Technical Field

The utility model relates to a medical treatment appurtenance field specifically is a device that is used for low limbs simulation heavy burden.

Background

The CT scanning can clearly display the skeletons and tissue structures of the lower limbs and the feet, and can assist doctors to further clearly and perfectly diagnose and effectively guide treatment. However, in the clinical routine CT examination of the lower limbs and the ankles, the patient is examined in the lying position, the body is in a relaxed state, the lower limbs and the ankles are not stressed, and the actual state of the lower limbs and the ankles under standing and load bearing stress cannot be objectively displayed. The patient can carry out CT examination under the condition that the lower limb bears the load, and the change of the bone, the tissue structure and the force line of the lower limb and the ankle part under the load can be objectively reflected. The CT examination result of lower limb load bearing can provide detailed and accurate three-dimensional image data for the auxiliary design of a total ankle replacement operation plan, evaluation of the patellofemoral joint alignment condition after knee joint inner collateral ligament reconstruction, bone structure analysis after flat foot orthopedic surgery and subtalar joint fusion surgery and the like. The CT examination technology under the lower limb loading state realizes the real functional examination, can directly observe the expression of the lower limbs and the ankles of the feet in the standing state and the subtle change of the corresponding relation of the bone joints, and has important significance for the selection and prognosis of treatment schemes.

In order to make the patient receive the CT inspection in the clinostatism, the lower limbs can simulate the heavy burden state when standing, Chinese utility model patent CN 213155962U discloses a CT inspection lower limbs heavy burden tractor, include: a fixing band, an elastic member, a pulling member and a stepping member; wherein, the both ends of fixed band set up adapting unit, surround the fixed band around the back of connecting together the both ends of fixed band through adapting unit behind personnel's waist to make the fixed band tie up at the waist. The elastic components and the traction components are respectively arranged in two groups and are distributed on two sides of the fixing band, wherein one end of each elastic component is fixed on the fixing band, the other end of each elastic component is fixed with the traction component, and the traction component is fixed with the treading component. The traction part is a rope, and the treading part is made of a plastic plate or a wood plate. In the CT examination process, certain requirements are made on materials of substances in a scanning range, metal artifacts can be caused by metal materials, and judgment of doctors can be influenced. Meanwhile, the CT examination lower limb load tractor disclosed in CN 213155962U adopts a wearable structure, needs a patient to wear the tractor according to the guidance of a professional before examination, and is complicated in process. Clinically, the same CT examination machine needs to examine a plurality of patients with different body types, and medical workers need to frequently adjust the lower limb load tractor, so that the working strength is increased. And the lower limb pressure required by patients with different weights can not be accurately controlled, and can not be displayed in time for the reference of medical care personnel.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a durable uses simple and convenient a device that is used for low limbs simulation heavy burden, can be applicable to the patient of different sizes to can give the controllable different pressure of patient's low limbs, can feed back pressure data often in the inspection process.

The technical scheme adopted by the utility model for solving the technical problems is that the device for simulating the load of the lower limbs comprises a lifting mechanism and a supporting mechanism, wherein the lifting mechanism comprises a shell component, a cover plate, a side plate and a bottom plate, wherein the cover plate is provided with an opening, and the cover plate and the bottom plate are fixedly arranged at two ends of the side plate to form an accommodating space; the power assembly is fixed inside the shell assembly; and one end of the guide rail component is movably connected with the power component, and the guide rail component is driven by the power component to do reciprocating linear motion along the horizontal direction.

The supporting mechanism is provided with a flat plate part which is perpendicular to the motion track straight line of the guide rail assembly, is fixedly arranged at the other end of the guide rail assembly and can move along with the motion of the guide rail assembly.

The utility model discloses a casing subassembly fixed mounting that is used for the heavy burden device of low limbs simulation places the one end of patient's low limbs at CT inspection bed, should set up the region outside CT scanning range. The guide rail component of the lifting mechanism is not extended out, and the sole of the patient is attached to the supporting mechanism. The guide rail assembly can drive the supporting mechanism to extend or retract under the control of power. The pressure applied to the lower limb of the patient is varied by varying the travel of the rail assembly. When the device of the utility model is used, a patient only needs to lie on the CT examining table normally, the sole contacts with the supporting mechanism of the device, and the operation of binding and adjusting is not needed. Is suitable for patients with different sizes and weights.

According to the utility model discloses an aspect, the utility model discloses a forced induction mechanism and control circuit system that is used for the device of low limbs simulation heavy burden still includes the electricity to be connected. The pressure sensing mechanism comprises a pressure sensor which is arranged on the flat plate part of the supporting mechanism; the feedback module is electrically connected with the pressure sensor; the control circuit system comprises a display and a processor which are electrically connected, and the processor is fixedly arranged in the shell assembly. The processor is electrically connected with the feedback module and the display, processes the pressure data transmitted by the feedback module and transmits the pressure data to the display for displaying.

Adopt power elevating system, the control circuit system that reunites makes the utility model discloses a device for low limbs simulation is born a burden can electric automatization ground adjusting pressure numerical value, guarantees that the patient keeps suitable, stable heavy burden state in the inspection process. Doctors can also give the patients the required loading threshold pressure in a targeted manner according to the patients with different diseases and weights. The supporting mechanism is provided with a pressure sensor, after a patient lies on the scanning bed, the guide rail assembly of the lifting mechanism extends out to apply pressure to the lower limbs of the patient, and when the stress reaches a preset threshold value, the position of the guide rail assembly is kept unchanged. After the CT scan is finished, the guide rail assembly retracts. The whole device shares a set of control circuit system, and can receive signals from a pressure sensor on the supporting mechanism to control the start and stop of the whole system.

According to one aspect of the present invention, the power assembly includes a motor fixedly disposed on an inner wall of the housing assembly; and the output gear is sleeved and fixed on a shaft head of an output shaft of the motor.

The guide rail assembly comprises a fixed slide rail block which is fixedly arranged on the inner wall of the shell assembly and is provided with a linear slide rail; the bottom of the rack is slidably matched and connected with the slide way; and one end of the guide rail shaft is fixedly connected with one end of the rack close to the cover plate of the shell assembly, and the other end of the guide rail shaft extends out of the opening of the cover plate and is fixedly connected with the supporting mechanism.

The utility model discloses elevating system gives power by the motor, through the meshing of the output gear and the rack that set up on the motor output shaft, turns into the linear reciprocating motion of rack with the rotary motion of output gear, and the motion output is accurate controllable. The slide way plays a guiding role in linear motion of the rack.

The utility model discloses in, elevating system can not be limited to the mechanism that motor, gear and rack constitute, also can be pneumatic cylinder, gear pump and cylinder driven mechanism.

According to one aspect of the invention, the housing assembly and the rail assembly are made of metal. Because the device of the utility model is fixedly arranged in the region outside the CT scanning range, the metal can not influence the inspection result. The utility model discloses a device for low limbs simulation heavy burden, because of the essential element is made by the metal, so durable, long service life.

According to an aspect of the utility model, control circuit system include with the digital displacement sensor that the treater electricity is connected, digital displacement sensor is used for detecting the flexible displacement volume of guide rail set spare and converts the flexible displacement volume into the signal of telecommunication feedback to the treater. The digital displacement sensor has the advantages of high detection precision, strong anti-interference capability, convenient use and long service life.

According to an aspect of the utility model, the control circuit system include with last stroke protection limit switch and lower stroke protection limit switch that the treater electricity is connected, last stroke protection limit switch is used for triggering and repayment electric signal for the treater when the guide rail assembly stretches out to reach operation extreme position, lower stroke protection limit switch is used for triggering and repayment electric signal for the treater when the guide rail assembly returns to contract and reaches operation extreme position. The limiting function can effectively protect the power assembly and the displacement sensor.

According to the utility model discloses an aspect, control circuit system still includes the remote controller, the remote controller includes the casing and is located the control circuit board of casing, be equipped with switch on the casing, go forward the button and retreat the button, last power module and the control module of being equipped with of control circuit board, the treater with electricity is connected between the remote controller. By arranging the controller, the extension and retraction of the guide rail assembly can be controlled more conveniently and rapidly.

According to an aspect of the utility model, including a set of power component and one set of pressure sensing mechanism, supporting mechanism have one with guide rail axle motion track vertically flat plate portion, set up pressure sensor symmetrically on the intermediate position of flat plate portion. The plurality of pressure sensors symmetrically distributed on the flat plate part can obtain a plurality of data, and the processor can obtain an average value to more accurately obtain pressure data. And the equipment manufacturing cost is low.

According to an aspect of the utility model, including two sets ofly power component and two sets of the guide rail subassembly, supporting mechanism have with two perpendicular platic plate portions of guide rail axle motion trail, two respectively set up one set of forced induction mechanism on the platic plate portion. The left and right independent lifting mechanisms can respectively control the lower limbs of the patient on one side, and are suitable for patients with different lengths of the lower limbs caused by diseases or accidents, or patients only needing examination on the lower limbs on one side.

According to an aspect of the utility model, the utility model discloses a device for low limbs simulation heavy burden still includes rigid backing plate, sets up keeping away from of flat plate portion one side of guide rail axle is made by wooden or rigid plastic.

When the focus position is near the foot, in order to avoid the influence of metal materials on CT scanning to cause metal artifacts, a base plate can be arranged between the sole and the flat plate part, the base plate is made of non-metal materials and has certain hardness, and the pressure sensor can be ensured to work stably. After the base plate is used, when the position of the foot focus is scanned, the support mechanism is not in the CT scanning range area.

The utility model discloses a device for low limbs simulation heavy burden has following advantage and beneficial effect: firstly, the main parts are made of metal and are durable; the use process is simple and convenient, and the device is suitable for patients with different body types; and thirdly, due to the control circuit system, threshold values can be preset according to the weights of different patients, different controllable pressures can be given to the lower limbs of the patients, and pressure data can be fed back at any time in the checking process.

Drawings

FIG. 1 is a three-dimensional schematic view of an embodiment of the device for simulating loads in the lower limbs of the present invention;

FIG. 2 is a schematic structural view of another embodiment of the device for simulating lower limb loads according to the present invention;

fig. 3 is a schematic view of the device for simulating a load of lower limbs according to the present invention.

The reference numbers: 1-a lifting mechanism; 11-a housing assembly; 12-a power assembly; 13-a guide rail assembly; 2-a support mechanism; 21-a flat plate portion; 3-a pressure sensing mechanism; 31-a pressure sensor; 4-control circuitry; 41-a display; 42-a processor; 5-backing plate;

Detailed Description

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments, which are not repeated herein, but the embodiments of the present invention are not limited thereto.

Fig. 1 is a schematic view of an embodiment of the device for simulating a load of a lower limb according to the present invention. The device for simulating the load of the lower limbs shown in fig. 1 comprises a lifting mechanism 1 and a supporting mechanism 2, wherein the lifting mechanism 1 comprises a shell assembly 11, a supporting mechanism and a lifting mechanism, wherein the shell assembly 11 is provided with a cover plate, a side plate and a bottom plate, the cover plate and the bottom plate are provided with openings, and the cover plate and the bottom plate are fixedly arranged at two ends of the side plate to form an accommodating space; the power assembly 12 is fixed inside the shell assembly 11; and a guide rail assembly 13, one end of which is movably connected with the power assembly 12, and the guide rail assembly 13 is driven by the power assembly 12 to do reciprocating linear motion along the horizontal direction.

And the supporting mechanism 2 is provided with a flat plate part 21 perpendicular to the motion track straight line of the guide rail assembly 13, and the supporting mechanism 2 is fixedly arranged at the other end of the guide rail assembly 13 and can move along with the motion of the guide rail assembly 13.

The utility model discloses a device for low limbs simulation heavy burden of embodiment, the region of integral erection outside the scanning range of CT inspection instrument, casing subassembly 11 fixed mounting is at the end of CT inspection bed. In use, the sole of the foot of the patient may be attached to the flat plate portion 21 of the support mechanism 2. The movement direction of the guide rail assembly 13 is the horizontal direction, in particular, the horizontal direction, and the reciprocating linear movement is vertical to the lower limb of the patient. The guide rail assembly 13 can drive the support mechanism 2 to extend or retract under the control of the power assembly 12. When the guide rail assembly 13 extends towards the patient, the flat plate part 21 of the supporting mechanism 2 moves towards the patient, so that mutual acting force is generated between the sole of the patient and the flat plate part 21, the acting force is increased according to the increase of the extending displacement of the guide rail assembly 13, and the pressure applied to the lower limb of the patient is changed by changing the displacement of the guide rail assembly 13. When the device of the embodiment is used, a patient only needs to lie on the CT examining table normally, the sole of the foot is in contact with the supporting mechanism 2 of the device, and the operations of binding and adjusting are not needed. For patients with different body types and weights, the proper self position is selected to make the sole part contact with the flat plate part 21 well before examination, and then the patient lies down.

Specifically, the power assembly 12 includes a motor fixedly disposed on the inner wall of the housing assembly 11, and an output gear is fixedly mounted on a shaft head of an output shaft of the motor; the guide rail assembly 13 comprises a fixed slide rail block, one side of the fixed slide rail block is fixedly arranged on the inner wall of the shell assembly 11, and the surface of the other side of the fixed slide rail block is provided with a linear slide rail; the bottom of the rack is slidably matched and connected with the slide way; that is, the cross-sectional shape of the linear slideway is matched with the cross-sectional shape of the bottom of the rack, for example, the linear slideway is T-shaped; the rack-type shell assembly is characterized by further comprising a guide rail shaft, one end of the guide rail shaft is fixedly connected with one end, close to the cover plate of the shell assembly 11, of the rack, an opening for the guide rail shaft to reciprocate is formed in the cover plate of the shell assembly 11, and the other end of the guide rail shaft extends out of the opening of the cover plate and is fixedly connected with the supporting mechanism 2.

The utility model discloses an elevating system 1 of embodiment gives power by the motor, through the meshing of the output gear and the rack that set up on the motor output shaft, turns into the linear reciprocating motion of rack with the rotary motion of output gear, and the motion output is accurate controllable. The slide rail plays a guiding role in linear motion of the rack, and uniform distribution of pressure action is guaranteed.

Furthermore, the device for simulating the load of the lower limbs of the embodiment of the utility model also comprises a pressure sensing mechanism 3 and a control circuit system 4 which are electrically connected; the pressure sensing mechanism 3 includes a pressure sensor 31 disposed on the flat plate portion 21 of the support mechanism 2; and a feedback module electrically connected to the pressure sensor 31; the control circuit system 4 comprises a display 41 and a processor 42 which are electrically connected, and the processor 42 is fixedly arranged in the shell assembly 11; the processor 42 is electrically connected to the feedback module and the display 41, processes the pressure data transmitted by the feedback module, and transmits the processed pressure data to the display 41 for displaying.

The utility model discloses a device for low limbs simulation is born a burden of an embodiment adopts elevating system 1 and control circuit system 4's integration, can realize pressure value is adjusted to electric automatization ground, guarantees that patient's low limbs are suitable, stable heavy burden state in the inspection process. The physician may also provide the weight bearing threshold required by the patient for different conditions and weights of the patient. The supporting mechanism 2 is provided with a pressure sensor 31, the guide rail assembly 13 of the lifting mechanism 1 extends out to exert pressure on the lower limb of the patient, and when the pressure reaches a preset threshold value, the position of the guide rail assembly 13 is kept unchanged. The patient begins a loaded CT examination, and after a period of time, the examination is completed, and the control system controls the retraction of the rail assembly 13. The whole device shares a set of control circuit system 4, and can receive signals from a pressure sensor 31 on the supporting mechanism 2 to control the start and stop of the whole system.

According to the utility model discloses an embodiment, control circuit system 4 includes the digital displacement sensor who is connected with treater 42 electricity, and digital displacement sensor is used for detecting the flexible displacement volume of guide rail set spare 13 and converts the flexible displacement volume to the signal of telecommunication and feeds back to treater 42. The digital displacement sensor has the advantages of high detection precision, strong anti-interference capability, convenient use and long service life.

Preferably, according to the utility model discloses an embodiment, control circuitry 4 still includes the upstroke protection limit switch and the downstroke protection limit switch that are connected with processor 42 electricity, and upstroke protection limit switch is used for triggering and repayment electric signal for processor 42 when guide rail assembly 13 stretches out to reach the operation extreme position, and downstroke protection limit switch is used for triggering and repayment electric signal for processor 42 when guide rail assembly 13 retracts and reaches the operation extreme position. The limiting function can effectively protect the power assembly 12 and the displacement sensor.

Preferably, according to the utility model discloses an embodiment, control circuit system 4 still includes the remote controller, and the remote controller includes the casing and is located the control circuit board of casing, is equipped with switch, the button of advancing and retreats the button on the casing, is equipped with power module and control module on the control circuit board, is connected electrically between treater 42 and the remote controller. By providing a controller, the extension and retraction of the rail assembly 13 can be controlled more conveniently and quickly. The operation of medical personnel is convenient, and the overall time of load CT examination is shortened.

As shown in fig. 1, the device for simulating lower limb loads according to an embodiment of the present invention includes a left and a right two sets of power assemblies 12, a supporting mechanism 2 has two flat plate portions 21 perpendicular to the motion track of the guide rail shaft, and each of the two flat plate portions 21 is provided with a set of pressure sensing mechanism 3. The left and right independent lifting mechanisms 1 are arranged, so that the lower limbs of the patient can be controlled respectively, and the lower limb control device is suitable for patients with different lengths of the lower limbs caused by diseases or accidents, or patients needing only one-side examination. The two sets of lifting mechanisms 1 which are independent from left to right are arranged, so that different pressures can be applied to the left and right lower limbs of a patient, specific numerical values are monitored and displayed on the display 41, and the condition that the judgment of a CT result is influenced due to the fact that the lower limb on one side is stressed and the lower limb on the other side is not stressed is prevented. As shown in fig. 2, the device for simulating lower limb weight according to another embodiment of the present invention includes a set of power assemblies 12 and a set of pressure sensing mechanism, the supporting mechanism 2 has a flat plate portion 21 perpendicular to the motion track of the guide rail shaft, and the pressure sensors 31 are symmetrically disposed at the middle position of the flat plate portion 21. The plurality of pressure sensors 31 symmetrically distributed on the flat plate portion 21 can acquire a plurality of data, and the processor 42 can acquire an average value to accurately acquire pressure data. And the equipment manufacturing cost is low.

According to another embodiment of the utility model, a device for low limbs simulation is born a burden still includes backing plate 5, sets up in one side of keeping away from the guide rail axle of flat plate portion 21, is made by wooden or rigid plastic. When examining the pathological changes of the ankle or the foot bone of a patient, the pad 5 is fixedly mounted on the flat plate portion 21, and the lower side surface of the pad 5 is in contact with the flat plate portion 21.

When the focus position is near the foot, in order to avoid the metal material from influencing the CT scanning to generate metal artifacts, a backing plate 5 can be arranged between the sole and the two flat plate parts 21, the backing plate 5 is made of non-metal material and has certain rigidity, so that the pressure sensor 31 can be ensured to work stably. The use of the backing plate 5 is satisfactory in that the support mechanism 2 is not located in the CT scanning range when scanning the lesion site.

In an embodiment of the present invention, the housing assembly 11 and the rail assembly 13 are made of metal. Because of the utility model discloses a device fixed mounting is in the region outside the CT scanning range, so the metal can not cause the influence to the CT inspection result. The metal shell assembly 11 and the guide rail assembly 13 are durable and have long service life.

The utility model discloses an elevating system 1 of another kind of embodiment is gear pump driven structure. The remaining component and part arrangement is the same as for one embodiment.

The foregoing is merely exemplary of embodiments of the present invention and reference should be made to the apparatus and structures herein not described in detail as it is known in the art to practice the same in general equipment and general methods.

The above description is only an example of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A device for simulating a load in a lower limb, comprising: comprises a lifting mechanism (1) and a supporting mechanism (2), wherein the lifting mechanism (1) comprises,

the shell assembly (11) is provided with a cover plate with an opening, a side plate and a bottom plate, and the cover plate and the bottom plate are fixedly arranged at two ends of the side plate to form an accommodating space;

a power assembly (12) fixed inside the housing assembly (11); and

one end of the guide rail component (13) is movably connected with the power component (12), and the guide rail component (13) is driven by the power component (12) to do reciprocating linear motion along the horizontal direction;

the supporting mechanism (2) is provided with a flat plate part (21) which is perpendicular to the motion track straight line of the guide rail assembly (13), and the supporting mechanism (2) is fixedly arranged at the other end of the guide rail assembly (13) and can move along with the motion of the guide rail assembly (13).

2. The apparatus for lower extremity simulated weight bearing of claim 1, wherein: the pressure sensing device also comprises a pressure sensing mechanism (3) and a control circuit system (4) which are electrically connected;

the pressure sensing mechanism (3) comprises a pressure sensing mechanism,

a pressure sensor (31) arranged on the flat plate part (21) of the supporting mechanism (2), wherein the upper surface of the pressure sensor (31) is higher than the upper surface of the flat plate part (21); and

a feedback module electrically connected with the pressure sensor (31);

the control circuit system (4) comprises a display (41) and a processor (42) which are electrically connected, and the processor (42) is fixedly arranged in the shell assembly (11); the processor (42) is electrically connected with the feedback module and the display (41), processes the pressure data transmitted by the feedback module and transmits the pressure data to the display (41) for displaying.

3. The apparatus for lower extremity simulated weight bearing of claim 2, wherein: the power assembly (12) comprises a motor and is fixedly arranged on the inner wall of the shell assembly (11);

the output gear is sleeved and fixed on a shaft head of an output shaft of the motor;

the guide rail assembly (13) comprises a fixed slide rail block, is fixedly arranged on the inner wall of the shell assembly (11) and is provided with a linear slide rail;

the bottom of the rack is slidably matched and connected with the slide way; and

and one end of the guide rail shaft is fixedly connected with one end of the rack close to the cover plate of the shell component (11), and the other end of the guide rail shaft extends out of the opening of the cover plate and is fixedly connected with the supporting mechanism (2).

4. The apparatus for lower extremity simulated weight bearing of claim 3, wherein: the housing assembly (11) and the rail assembly (13) are made of metal.

5. The apparatus for lower extremity simulated weight bearing of claim 4, wherein: the control circuit system (4) comprises a digital displacement sensor electrically connected with the processor (42), and the digital displacement sensor is used for detecting the stretching displacement of the guide rail assembly (13) and converting the stretching displacement into an electric signal to be fed back to the processor (42).

6. The apparatus for lower extremity simulated weight bearing of claim 5, wherein: the control circuit system (4) comprises an upper stroke protection limit switch and a lower stroke protection limit switch which are electrically connected with the processor (42), the upper stroke protection limit switch is used for triggering and feeding back an electric signal to the processor (42) when the guide rail assembly (13) extends to reach the operation limit position, and the lower stroke protection limit switch is used for triggering and feeding back an electric signal to the processor (42) when the guide rail assembly (13) retracts to reach the operation limit position.

7. The apparatus for lower extremity simulated weight bearing of claim 6, wherein: the control circuit system (4) further comprises a remote controller, the remote controller comprises a shell and a control circuit board located in the shell, a power switch, a forward button and a backward button are arranged on the shell, a power module and a control module are arranged on the control circuit board, and the processor (42) is electrically connected with the remote controller.

8. The apparatus for lower extremity simulated weight bearing of claim 7, wherein: the rail guide rail device is characterized by comprising a group of power components (12) and a set of pressure sensing mechanism (3), wherein the supporting mechanism (2) is provided with a flat plate part (21) perpendicular to a motion track of the guide rail shaft, and pressure sensors (31) are symmetrically arranged in the middle of the flat plate part (21).

9. The apparatus for lower extremity simulated weight bearing of claim 7, wherein: the device comprises two groups of power assemblies (12) and two groups of guide rail assemblies (13), a supporting mechanism (2) is provided with two flat plate parts (21) which are perpendicular to the motion trail of a guide rail shaft, and two flat plate parts (21) are respectively provided with a set of pressure sensing mechanism (3).

10. The device for lower limb simulated weight bearing according to claim 8 or 9, wherein: the device also comprises a backing plate (5) which is arranged on the side surface of the flat plate part (21) far away from the guide rail shaft and is made of wood or hard plastics.

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