CN114795844A

CN114795844A - Leg moving device for lower limb arteriosclerosis obliterans

Info

Publication number: CN114795844A
Application number: CN202210516052.9A
Authority: CN
Inventors: 巴南南; 贾艳青; 刘玉峰; 吴言歌; 关文博
Original assignee: First Affiliated Hospital of Zhengzhou University
Current assignee: First Affiliated Hospital of Zhengzhou University
Priority date: 2022-05-12
Filing date: 2022-05-12
Publication date: 2022-07-29

Abstract

The invention discloses a leg moving device for lower limb arteriosclerosis obliterans, which comprises a driving mechanism, a knee joint moving mechanism, a shank muscle group extrusion mechanism and an ankle joint moving mechanism, wherein the knee joint moving mechanism is placed at a knee nest of a patient and used for bending action training of the knee joint of the patient and reciprocates in the direction vertical to the knee position through the driving mechanism, a shank muscle group extrusion module is used for extruding the back shank group and the outside shank group of the patient, and the ankle joint moving mechanism is attached to the foot of the patient and reciprocates in the direction parallel to the shank achilles tendon of the patient through the driving mechanism. Can carry out periodic extrusion to the muscle of crowd behind patient's shank and the lateral group, make positions such as patient's shank muscle, knee joint and ankle joint obtain passive exercise, promote its low limbs venous circulation, alleviate the edema, can alleviate and relieve patient's painful sense through the massage simultaneously, prevent that the patient from appearing the condition of sports injury, be favorable to patient's recovery.

Description

Leg moving device for lower limb arteriosclerosis obliterans

Technical Field

The invention relates to the field of rehabilitation instruments, in particular to a leg moving device for lower limb arteriosclerosis obliterans.

Background

The lower limb arteriosclerosis obliterans is a chronic progressive disease with clinical manifestations of lower limb intermittent claudication, rest pain, ulcer or necrosis and the like caused by the thickening, the narrow or the obliteration of lower limb blood supply artery intima, the lumen or the obliteration of diseased limb blood supply, insufficient blood supply of the diseased limb, and is the third major atherosclerotic disease next to coronary heart disease and cerebral apoplexy, and has the characteristics of high morbidity, high amputation rate and high fatality rate. In China, with the increase of the incidence of diseases such as diabetes, hypertension and the like, the incidence of lower limb arteriosclerosis obliterans tends to increase year by year.

Exercise can well protect immune system, nervous system, motor system, endocrine system and circulatory system. The long-term moderate aerobic exercise has important regulation and control functions on diseases such as myocardial infarction, atherosclerosis, hypertension, obesity, diabetes, fatty liver and the like. The risk factors related to the incidence of lower limb arteriosclerosis obliterans include smoking, hypertension, diabetes, hyperlipidemia, hyperhomocysteinemia, chronic renal insufficiency, high inflammation indexes and the like. Therefore, moderate regular aerobic exercise has a positive effect on improving ischemic symptoms and quality of life of patients. The vascular surgery group of the Chinese medical society has also further emphasized the importance of exercise therapy for lower extremity atherosclerotic occlusion. The regular and proper aerobic exercise can increase the walking distance and improve the life quality, and the effect is more obvious under the supervision of related personnel. For the elderly patients, the appropriate regular aerobic exercise can increase walking distance, and also can reduce systolic pressure and blood lipid concentration. Regular aerobic exercise patterns include walking, ankle extending and knee bending. Such as walking exercises, resistance exercises, buerger exercises, etc.

For patients in early stage of lower limb arteriosclerosis obliterans, a mode of combining medication therapy with exercise-assisted therapy is generally adopted, but at present, a leg exercise device special for patients with lower limb arteriosclerosis obliterans is not available, most patients are trained by the aid of an existing rehabilitation training device under the guidance of doctors, the treatment effect is poor, in the training process, due to the lack of professional guidance, the patients are prone to pain and mobility injury, the expected treatment effect cannot be achieved, and the condition of the patients can be aggravated. To this end, we propose a leg mobilization device for lower extremity arteriosclerotic occlusion.

Disclosure of Invention

The main object of the present invention is to provide a leg exercising apparatus for arteriosclerosis obliterans of lower limbs which can effectively solve the problems of the background art.

In order to achieve the purpose, the invention adopts the technical scheme that:

a leg moving device for lower limb arteriosclerosis obliterans comprises a driving mechanism, a knee joint moving mechanism, a shank muscle group extrusion mechanism and an ankle joint moving mechanism, wherein the knee joint moving mechanism is placed at a knee fossa of a patient and used for bending action training of the knee joint of the patient and reciprocates in the direction perpendicular to the knee position through the driving mechanism, a shank muscle group extrusion module is used for extruding a shank back group and a shank muscle of the patient, and the ankle joint moving mechanism is attached to the foot of the patient and reciprocates in the direction parallel to the shank achilles tendon of the patient through the driving mechanism.

Muscle crowd extrusion mechanism includes that the chamber is placed to the shank, gastrocnemius rubs board and extensor muscle stripper plate, gastrocnemius rubs the board and installs in the inside central point department that the chamber was placed to the shank, and its a side end face with patient's gastrocnemius contact has evenly seted up a plurality of groups squeeze roll, extensor muscle stripper plate is not connected with the installation axle with a side end face central point of patient's muscle contact, and installation axle symmetry installs in the inside that the chamber was placed to the shank, the friction block with the same quantity of extensor muscle stripper plate is installed to gastrocnemius rubs board both sides terminal surface, and gastrocnemius rubs the board and passes through friction block and extensor muscle stripper plate sliding connection.

Further, actuating mechanism includes the motor, drive gear, driven gear, the camshaft, the cam, from the active cell, the reciprocating shaft, reset spring and joint spare, camshaft middle part and tip all through the key respectively with driven gear and cam rigid connection, and driven gear meshes with drive gear mutually, cam outside sliding connection has two sets of slave cells, and be located the tip and the reciprocating shaft one end rigid connection of placing the slave cell of chamber one side near the leg, reset spring and joint spare are all installed in the reciprocating shaft outside, and the reciprocating shaft runs through the leg and places chamber and gastrocnemius rubbing board, and rub the board block through joint spare and gastrocnemius rubbing board.

Furthermore, knee joint moving mechanism includes casing, guide, expansion plate, bracket, connecting piece and stopper, and the guide symmetry is installed in the casing up end, and the expansion plate is installed inside the guide, and with guide sliding connection, expansion plate one end is connected with the follower that is located the cam upside, and the other end passes through the axle to be connected with the bracket rotation, and the connecting piece is installed in casing a side end face, and is connected with the casing through the stopper.

Further, ankle joint moving mechanism includes the slide, the footboard, the sole, hydraulic shock absorber, the guiding axle, the fixer, buffer spring and spacing handle, the inside spout that is equipped with of slide, the footboard is installed in the spout of slide, the sole is installed in the footboard upside, and it is articulated with the footboard, hydraulic shock absorber tip rotates with footboard and sole respectively and is connected, buffer spring installs inside the spout of slide, and its tip is connected with footboard and slide respectively, the quantity of guiding axle is three, and be located the guiding axle one end and the footboard rigid connection of intermediate position, the other end stretches into inside the reciprocating shaft, and through fixer and reciprocating shaft fixed connection, the chamber rigid connection is placed with the shank to the guiding axle one end that is located both sides position, the other end stretches into inside the slide, and through spacing handle and slide fixed connection.

Compared with the prior art, the invention has the following beneficial effects:

(1) through the shank muscle group extrusion mechanism, the muscles of the back shank group and the outside shank group of a patient can be periodically extruded, so that the shank muscle of the patient is passively exercised, the venous circulation of the lower limb of the patient is promoted, the edema is reduced, the situations of oxygen-free metabolism of muscle tissues and unsmooth blood caused by muscle tension due to the long-time contraction of the muscle during exercise can be avoided, and the pain of the patient can be relieved and relieved through massage;

(2) the knee joint moving mechanism and the ankle joint moving mechanism are arranged, so that the knee joint of a patient can do passive reciprocating bending motion, and meanwhile, the knee joint moving mechanism and the ankle joint moving mechanism are linked under the driving of the driving mechanism, so that the knee joint and the ankle joint of the patient are synchronously trained in the motion process, and the situation of mobility injury of the patient is prevented;

(3) the device has the advantages that parameters such as initial positions of key action positions such as the gastrocnemius kneading plate, the extensor squeezing plate and the pedal can be adjusted according to leg shapes of different users, the installation and the adjustment of the integral installation angle of the device are facilitated, the device is suitable for patients with different leg shapes, and the device is convenient for patients with lower limb arteriosclerosis obliterans to use.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the installation structure of the reciprocating shaft of the present invention;

FIG. 3 is a schematic view of the mounting structure of the connector of the present invention;

FIG. 4 is a schematic view of the installation structure of the gastrocnemius kneading plate of the present invention;

FIG. 5 is a schematic view of the mounting structure of the friction block of the present invention.

In the figure: 11. a motor; 12. a drive gear; 13. a driven gear; 14. a camshaft; 15. a cam; 16. a slave mover; 17. a reciprocating shaft; 18. a return spring; 19. a clamping piece; 21. a housing; 22. a guide member; 23. a retractable plate; 24. a bracket; 25. a connecting member; 26. a stopper; 31. a leg placement cavity; 32. a gastrocnemius rubbing plate; 33. an extensor compression plate; 34. a squeeze roll; 35. installing a shaft; 36. a friction block; 41. a slide base; 42. a pedal; 43. a foot plate; 44. a hydraulic shock absorber; 45. a guide shaft; 46. a holder; 47. a buffer spring; 48. a limiting handle.

Detailed Description

The present invention will be further described with reference to the following detailed description, wherein the drawings are for illustrative purposes only and are not intended to be limiting, and certain features of the drawings are omitted, enlarged or reduced in size, and are not intended to represent the actual product size.

Example 1

As shown in fig. 1 to 5, a leg moving device for lower limb arteriosclerosis obliterans comprises a driving mechanism, a knee joint moving mechanism, a calf muscle group extruding mechanism and an ankle joint moving mechanism, wherein the knee joint moving mechanism is placed at a knee fossa of a patient and used for bending action training of the knee joint of the patient and reciprocates in a direction vertical to the knee position through the driving mechanism, the calf muscle group extruding module is used for extruding muscles of a rear group and an outer side group of the calf of the patient, and the ankle joint moving mechanism is attached to the foot of the patient and reciprocates in a direction parallel to the calf achilles tendon of the patient through the driving mechanism.

Muscle crowd extrusion mechanism includes that the chamber 31 is placed to the shank, gastrocnemius rubs board 32 and extensor muscle stripper plate 33, gastrocnemius rubs board 32 and installs in the inside central point department that the chamber 31 was placed to the shank, and its a plurality of groups of squeeze roll 34 have evenly been seted up with a side end face of patient's gastrocnemius contact, extensor muscle stripper plate 33 is not connected with installation axle 35 with a side end face central point of patient's muscle contact, and installation axle 35 symmetry is installed in the inside that the chamber 31 was placed to the shank, the friction block 36 with the same quantity of extensor muscle stripper plate 33 is installed to gastrocnemius rubs board 32 both sides terminal surface, and gastrocnemius rubs board 32 passes through friction block 36 and extensor muscle stripper plate 33 sliding connection.

Actuating mechanism includes motor 11, drive gear 12, driven gear 13, camshaft 14, cam 15, from active cell 16, reciprocating shaft 17, reset spring 18 and joint spare 19, camshaft 14 middle part and tip all through the key respectively with driven gear 13 and cam 15 rigid connection, and driven gear 13 meshes with drive gear 12 mutually, cam 15 outside sliding connection has two sets of driven active cells 16, and be located and place the tip and the reciprocating shaft 17 one end rigid connection of driven active cell 16 of chamber 31 one side near the shank, reset spring 18 and joint spare 19 are all installed in the reciprocating shaft 17 outside, and reciprocating shaft 17 runs through the shank and places chamber 31 and gastrocnemius rubbing board 32, and through joint spare 19 and gastrocnemius rubbing board 32 looks block.

The knee joint moving mechanism comprises a shell 21, a guide part 22, an expansion plate 23, a bracket 24, a connecting part 25 and a limiter 26, wherein the guide part 22 is symmetrically installed on the upper end surface of the shell 21, the expansion plate 23 is installed inside the guide part 22 and is in sliding connection with the guide part 22, one end of the expansion plate 23 is connected with a driven part 16 located on the upper side of a cam 15, the other end of the expansion plate is rotatably connected with the bracket 24 through a shaft, and the connecting part 25 is installed on one side end surface of the shell 21 and is connected with the shell 21 through the limiter 26.

The ankle joint moving mechanism comprises a sliding seat 41, a pedal 42, a foot plate 43, a hydraulic shock absorber 44, a guide shaft 45, a fixer 46, a buffer spring 47 and a limit handle 48, wherein the sliding seat 41 is internally provided with a sliding groove, the pedal 42 is arranged in the sliding groove of the sliding seat 41, the foot plate 43 is arranged at the upper side of the pedal 42, and is hinged with the pedal 42, the end of the hydraulic shock absorber 44 is respectively connected with the pedal 42 and the foot plate 43 in a rotating way, the buffer spring 47 is arranged in the sliding groove of the sliding seat 41, and the ends thereof are connected with the pedal 42 and the slide 41, respectively, the number of the guide shafts 45 is three, and one end of the guide shaft 45 positioned at the middle position is rigidly connected with the pedal 42, the other end extends into the reciprocating shaft 17, and is fixedly connected with the reciprocating shaft 17 through a fixer 46, one end of a guide shaft 45 positioned at two sides is rigidly connected with the leg placing cavity 31, and the other end extends into the sliding seat 41 and is fixedly connected with the sliding seat 41 through a limit handle 48.

By adopting the technical scheme: through the rotation of the motor 11, the cam 15 is driven to rotate periodically through the gear transmission system, the cam 15 pushes the two sets of the passive rotors 16 to do reciprocating linear motion, the passive rotor 16 at the upper side drives the expansion plate 23 to slide in the guide 22, the pushing bracket 24 to do reciprocating linear motion, so as to drive the knee joint of the patient to do passive periodic bending motion, the passive rotor 16 at one side drives the reciprocating shaft 17 to do reciprocating linear motion, the reciprocating shaft 17 simultaneously drives the guide shaft 45 to do reciprocating linear motion, so that the pedal 42 does reciprocating linear motion, the pedal 42 drives the foot plate 43 to move, when the knee of the corresponding side limb moves to the maximum stroke, the pedal 42 moves to the maximum distance in the direction close to the shell 21, when the knee of the corresponding side limb falls back from the maximum stroke, the pedal 42 gradually moves to the direction far away from the shell 21 until the lower limb is in the initial state, the reciprocating shaft 17 drives the gastrocnemius kneading plate 32 to slide in the leg placing cavity 31 in a reciprocating manner through the clamping piece 19, the extensor squeezing plate 33 and the friction block 36 are in a real-time contact state, the extensor squeezing plate 33 gradually contacts with the most protruding position of the friction block 36 while the gastrocnemius kneading plate 32 moves away from the shell 21, so that the extensor squeezing plates 33 on the two sides do rotary motion around the mounting shaft 35 to squeeze the muscle groups on the two sides of the lower leg of the patient, meanwhile, the gastrocnemius kneading plate 32 squeezes and kneads the gastrocnemius muscle group on the rear side of the patient, the lower leg squeezing motion can improve the blood circulation of the lower limbs by passively exercising the lower leg muscles, and massage the rear group and the outer group of the lower limbs such as the gastrocnemius and the outer extensor group and the like, thereby promoting the venous circulation of the lower limbs, reduce edema, and avoid the generation of anaerobic metabolism of muscle tissue and unsmooth blood caused by muscle tension due to long-time contraction of muscle during exercise.

Example 2

As shown in fig. 1 to 5, a leg moving device for arteriosclerosis obliterans of lower limbs comprises a driving mechanism, a knee joint moving mechanism, a calf muscle group pressing mechanism and an ankle joint moving mechanism, wherein the knee joint moving mechanism is placed at a knee fossa of a patient and used for bending action training of the knee joint of the patient and reciprocates in a direction perpendicular to the knee position through the driving mechanism, the calf muscle group pressing module is used for pressing the calf posterior group and the outside group muscles of the patient, the ankle joint moving mechanism is attached to the foot of the patient and presses the calf posterior group and the outside group muscles of the patient through the driving mechanism, and the calf achilles tendon reciprocates in a direction parallel to the calf achilles tendon in the using process.

By adopting the technical scheme: can be to the patient through the shank muscle crowd extrusion mechanism who sets up, because different patients 'leg type differs, in order to guarantee to have best massage extrusion effect, need adjust the initial position of gastrocnemius rubbing board 32 and extensor stripper plate 33 according to user's leg type before the use, specific regulation mode is: for the adjustment of the position of the gastrocnemius kneading plate 32, the clamping and the position of the clamping piece 19 and the gastrocnemius kneading plate 32 can be adjusted, so that the initial position of the gastrocnemius kneading plate 32 can be changed, and the optimal state is that the gastrocnemius kneading plate 32 is attached to the end of the gastrocnemius close to the fossa of the knee of the patient, so that the contact with the achilles tendon of the patient in the motion process of the gastrocnemius kneading plate 32 can be avoided, and the extrusion of the achilles tendon can be avoided; for the adjustment of the extensor squeezing plate 33, the extensor squeezing plate 33 at the corresponding position can be slid, the extensor squeezing plate 33 can be slid to the optimal position along the mounting shaft 35, the extensor squeezing plate 33 in contact with the muscle group outside the patient can squeeze one end of the soleus muscle, the longus peroneus muscle, the extensor digitorum longus muscle and the brachial peroneus muscle close to the knee fossa, the extensor squeezing plate 33 in contact with the muscle group inside the patient can squeeze one side of the gastrocnemius muscle inside the calf of the patient, it should be noted that the optimal position of the extensor squeezing plate 33 at the farthest end from the shell 21 should be on the upper side of the terminal of the gastrocnemius muscle, so as to avoid squeezing the tibia and the peroneus of the patient in motion.

Example 3

By adopting the technical scheme: through the ankle joint moving mechanism who sets up, can make patient's ankle joint carry out passive bending, stretch, thereby promote the blood pressure circulation of patient's low limbs, when using, because different patient's leg type differs, there is the best motion effect in order to guarantee, simultaneously in order to prevent that the patient from producing the extrusion in passive training in-process knee joint department, need adjust the initial position of sole 43 according to user's leg type before the use, the optimal state makes for the patient places the shank naturally, knee joint and ankle joint should have certain initial bending angle, the regulation method is: by rotating the limit handle 48 and the fixer 46, the sliding seat 41 can freely slide along the guide shafts 45 at the two sides, meanwhile, the guide shaft 45 at the middle position can freely extend and retract or extend out of the reciprocating shaft 17, after the sliding seat 41 is pulled to the optimal position according to the leg shape of a patient, the limit handle 48 and the fixer 46 are screwed, and in the using process, the hydraulic shock absorber 44 can absorb the shock generated when the pedal 42 and the foot plate 43 rotate relatively, so that the ankle joint of the patient is protected to a certain extent.

Example 4

By adopting the technical scheme: through the knee joint moving mechanism who sets up, can make patient's knee joint be passive reciprocating bending motion, in the use, can adjust patient's knee joint's maximum motion stroke through the length of adjusting expansion plate 23, make the device be applicable to the patient of different leg types, simultaneously because be connected for rotating between bracket 24 and the expansion plate 23, in the periodic motion process, can not produce the friction between the skin surface of bracket 24 and patient's knee nest, thereby can play certain guard action to patient's skin, and through the connecting piece 25 that sets up, can make the device install in positions such as sick bed or seat department, and is convenient for use, can satisfy different patient's user demand.

It should be noted that the invention is a leg moving device for lower limb arteriosclerosis obliterans, when in use, the whole device is arranged at the edge of a sickbed through a connecting piece 25, the initial angle of the device is adjusted, after the device is fixed by screwing a limiter 26, a bracket 24 is attached to the fossa of a patient, one side of the calf gastrocnemius muscle group of the patient is connected with a gastrocnemius kneading plate 32, the sole is attached to the inner end surface of a foot plate 43, the sole of the patient is fixed with the foot plate 43 through an elastic bandage, after the adjustment is finished, a power supply is switched on, a motor 11 is electrified to operate, a cam 15 is driven to rotate periodically through a gear transmission system, the cam 15 drives two sets of slave rotors 16 to do reciprocating linear motion, the slave rotors 16 on the upper side drive a telescopic plate 23 to slide in a guide piece 22, the bracket 24 is driven to do reciprocating linear motion, so as to drive the knee joint of the patient to do periodic bending motion, the follower 16 at one side drives the reciprocating shaft 17 to do reciprocating linear motion, the reciprocating shaft 17 drives the gastrocnemius kneading board 32 to slide in the leg placing cavity 31 in a reciprocating manner through the clamping piece 19, the extensor squeezing board 33 and the friction block 36 are in a real-time contact state, when the gastrocnemius kneading board 32 moves in a direction away from the shell 21, the extensor squeezing board 33 gradually contacts with the most protruded position of the friction block 36, so that the extensor squeezing boards 33 at two sides rotate around the mounting shaft 35 to squeeze the muscle groups at two sides of the lower leg of the patient, meanwhile, the gastrocnemius kneading board 32 squeezes and kneads the gastrocnemius muscle group at the rear side of the patient, in addition, the reciprocating shaft 17 simultaneously drives the guide shaft 45 to do reciprocating linear motion, so that the pedal 42 makes reciprocating linear motion, the pedal 42 drives the pedal 43 to move, when the knee corresponding to the side limb moves to the maximum stroke, the pedal 42 moves toward the housing 21 to the maximum distance, and when the knee corresponding to the side limb falls back by the maximum stroke, the pedal 42 gradually moves away from the housing 21 to the initial state of the lower limb, and the process is repeated.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A leg moving device for lower limb arteriosclerosis obliterans comprises a driving mechanism, a knee joint moving mechanism, a calf muscle group extrusion mechanism and an ankle joint moving mechanism, and is characterized in that: the knee joint moving mechanism is placed at the knee fossa of a patient, is used for knee joint bending action training of the patient and reciprocates in the direction vertical to the knee position through the driving mechanism, the calf muscle group extrusion module is used for extruding the rear group and the outside group muscles of the calf of the patient, and the ankle joint moving mechanism is attached to the foot of the patient and reciprocates in the direction parallel to the calf achilles tendon of the patient through the driving mechanism;

muscle crowd extrusion mechanism includes that the leg places chamber (31), gastrocnemius rubs board (32) and extensor expression board (33), gastrocnemius rubs board (32) and installs in the inside central point department that the chamber (31) was placed to the leg, and its side end face with patient's gastrocnemius contact has evenly seted up a plurality of groups squeeze roll (34), extensor expression board (33) do not be connected with installation axle (35) with a side end face central point of patient's muscle contact, and install axle (35) symmetry in the inside that the chamber (31) was placed to the leg, the friction block (36) with extensor expression board (33) the same quantity are installed to gastrocnemius rubs board (32) both sides terminal surface, and gastrocnemius rubs board (32) through friction block (36) and extensor expression board (33) sliding connection.

2. The leg mobilization device for lower extremity arteriosclerotic occlusion of claim 1, further comprising: the driving mechanism comprises a motor (11), a driving gear (12), a driven gear (13), a cam shaft (14), a cam (15), a driven gear (16), a reciprocating shaft (17), a return spring (18) and a clamping piece (19), the middle part and the end part of the cam shaft (14) are respectively and rigidly connected with the driven gear (13) and the cam (15) through keys, the driven gear (13) is meshed with the driving gear (12), two groups of driven rotors (16) are connected with the outer side of the cam (15) in a sliding way, the end part of the driven rotor (16) which is positioned at one side close to the leg placing cavity (31) is rigidly connected with one end of the reciprocating shaft (17), the return spring (18) and the clamping piece (19) are both arranged at the outer side of the reciprocating shaft (17), and the reciprocating shaft (17) penetrates through the leg placing cavity (31) and the gastrocnemius kneading plate (32) and is clamped with the gastrocnemius kneading plate (32) through a clamping piece (19).

3. The leg mobilization device for lower extremity arteriosclerotic occlusion of claim 1, further comprising: knee joint moving mechanism includes casing (21), guide (22), expansion plate (23), bracket (24), connecting piece (25) and stopper (26), guide (22) symmetry is installed in casing (21) up end, expansion plate (23) are installed inside guide (22), and with guide (22) sliding connection, expansion plate (23) one end is connected with follow runner (16) that is located cam (15) upside, the other end passes through the axle and is connected with bracket (24) rotation, connecting piece (25) are installed in casing (21) a side end face, and are connected with casing (21) through stopper (26).

4. The leg mobilization device for arteriosclerosis obliterans of the lower extremities of claim 1, wherein the device comprises: the ankle joint moving mechanism comprises a sliding seat (41), pedals (42), foot plates (43), hydraulic shock absorbers (44), guide shafts (45), a fixer (46), buffer springs (47) and a limiting handle (48), sliding grooves are formed in the sliding seat (41), the pedals (42) are installed in the sliding grooves of the sliding seat (41), the foot plates (43) are installed on the upper side of the pedals (42) and hinged to the pedals (42), the end portions of the hydraulic shock absorbers (44) are respectively and rotatably connected with the pedals (42) and the foot plates (43), the buffer springs (47) are installed in the sliding grooves of the sliding seat (41), the end portions of the buffer springs are respectively connected with the pedals (42) and the sliding seat (41), the number of the guide shafts (45) is three, one end of each guide shaft (45) located in the middle position is rigidly connected with the corresponding pedal (42), the other end of each guide shaft extends into the corresponding reciprocating shaft (17) and is fixedly connected with the corresponding reciprocating shaft (17) through the fixer (46), one end of a guide shaft (45) positioned at the two sides is rigidly connected with the leg placing cavity (31), and the other end extends into the sliding seat (41) and is fixedly connected with the sliding seat (41) through a limiting handle (48).