CN110051514B

CN110051514B - Motion instrument for preventing lower limb deep vein thrombosis

Info

Publication number: CN110051514B
Application number: CN201910285392.3A
Authority: CN
Inventors: 黄伟; 夏喜刚; 胡彪
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-04-10
Filing date: 2019-04-10
Publication date: 2021-03-16
Anticipated expiration: 2039-04-10
Also published as: CN110051514A

Abstract

The invention discloses a motion instrument for preventing deep venous thrombosis of lower limbs, which comprises a shell, wherein the upper end of the shell is provided with two sliding grooves corresponding to each other in position, a first device cavity and a sliding plug cavity are respectively arranged in the side walls of the shell, the side wall of the shell is fixedly connected with a driving motor, one end of an output shaft of the driving motor, which is positioned in the first device cavity, is fixedly connected with a first bevel gear, the inner wall of the first device cavity is rotatably connected with a driving wheel, the side wall of the driving wheel is coaxially and fixedly connected with a second bevel gear meshed with the first bevel gear, the upper end of the shell is provided with a first groove communicated with the first device cavity, and the inner walls of the two sliding grooves are rotatably connected with first reciprocating lead screws which are arranged in parallel. The invention can massage the sole and the instep to stimulate the nerve function of the limbs, prevent the stiff deformation of the ankle joint, effectively prevent the foot drop and promote the recovery of the patient.

Description

Motion instrument for preventing lower limb deep vein thrombosis

Technical Field

The invention relates to the technical field of medical instruments, in particular to a sports instrument for preventing deep venous thrombosis of lower limbs.

Background

Deep vein thrombosis refers to abnormal coagulation of blood in deep veins, and belongs to the disease of venous reflux disorder of lower limbs. Thrombosis occurs mostly in the braked state. The etiological factors include slow blood flow, vein wall damage and high coagulation state. After thrombosis, most of the thrombus can be spread to the trunk of the deep vein of the whole limb except for a few parts which can be ablated or limited to the occurrence positions, and if the thrombus cannot be diagnosed and treated in time, most of the thrombus can be evolved into thrombosis sequelae, so that the life quality of a patient is influenced for a long time.

Deep vein thrombosis is a clinically common difficult and serious illness and is one of the most common venous diseases. The published reported data indicates: approximately 3-6 million patients develop disease annually in developing countries, and 60 million venous thromboembolic diseases occur annually in the united states as a statistic by people in the united states. The clinical manifestations are as follows: the patients with the symptoms of stasis and swelling of the lower limbs and the serious limb ischemic necrosis can not be cured for a long time, the patients lose partial or all labor capacity, and partial patients can have thrombus and fall off to cause pulmonary embolism so as to endanger the life of the patients. The anticoagulant and thrombolytic therapy is carried out through the medicine, and 7 percent of thrombus recurs in half a year after the first attack; about 20-50% of DVT develops post-thrombotic syndrome within 1-2 years; the occurrence rate of PTS reaches 50 to 82 percent within 5 years; among them, 5-10% of patients have severe symptoms such as pain and swelling of affected limbs, leg ulcer, and difficulty in walking.

In the market at present, for patients who lie in bed for a long time and can not get out of bed for activity, the motor sports apparatus for preventing the deep venous thrombosis of the lower limbs is basically an intermittent inflation device. The main defects are that the volume of the therapeutic apparatus is large, all the inflatable sleeves are made of textiles and are not disposable, the defects of difficult cleaning and disinfection exist, some inflatable sleeves are heavy and wrap the feet, the foot size can not be adjusted, the pressurizing effect is influenced, and the comprehensive continuous operation is difficult.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides a sports instrument for preventing deep venous thrombosis of lower limbs.

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

a motion instrument for preventing deep venous thrombosis of lower limbs comprises a shell, wherein the upper end of the shell is provided with two sliding grooves corresponding to each other in position, a first device cavity and a sliding plug cavity are respectively arranged in a quantitative side wall of the shell, a driving motor is fixedly connected to a side wall of the shell, a first bevel gear is fixedly connected to one end, located in the first device cavity, of an output shaft of the driving motor, a driving wheel is rotatably connected to the inner wall of the first device cavity, a second bevel gear meshed with the first bevel gear is coaxially and fixedly connected to the side wall of the driving wheel, a first groove communicated with the first device cavity is formed in the upper end of the shell, first reciprocating lead screws arranged in parallel are rotatably connected to the inner walls of the two sliding grooves, one of the first reciprocating lead screws penetrates through the inner wall of the sliding grooves and extends into the first groove, and a driven wheel is fixedly connected to one end, located in the first groove, the driving wheel is connected with the driven wheel through a synchronous belt in a transmission way, a supporting column is in threaded connection with the first reciprocating screw rod, a mounting seat is mounted on the supporting column through a height adjusting device, a pressing plate is rotatably connected on the mounting seat and elastically connected with the mounting seat through a spring, an instep massage device is mounted on the lower end face of the pressing plate, a water storage tank is fixedly connected to the outer side wall of the shell, a rotating shaft is arranged in the shell along the horizontal direction, one end of the rotating shaft penetrates through the inner wall of the shell and extends into the first device cavity, a third bevel gear meshed with the second bevel gear is fixedly connected to one end of the rotating shaft in the first device cavity, a plurality of pressing cones are arranged at the upper end of the shell in a penetrating way, a resisting block is welded to one end of the pressing cones in the shell, and, the utility model discloses a water storage tank, including casing, pressing awl, smooth stopper intracavity, press the awl and radially seted up the hole for water spraying along it, the lateral wall of pressing the awl sets up the water inlet that communicates with the hole for water spraying, the circulation chamber that communicates with smooth stopper chamber is seted up to the up end of casing, the lateral wall of circulation chamber seted up with water inlet complex delivery port, the other end of pivot runs through the inner wall of casing and extends to smooth stopper intracavity, the pressurized-water device that is used for advancing the water pressure in the storage water tank into the circulation intracavity is installed to the one end that the pivot is located smooth stopper intracavity, two equal coaxial rotation in same end of first reciprocal lead screw is connected with the synchronizing.

Preferably, height adjusting device is including seting up the second device chamber in the support column lateral wall, the lateral wall of support column runs through to be equipped with and rotates the worm of connecting at second device intracavity wall, the inner wall in second device chamber rotates and is connected with the worm wheel, the circular slot with second device chamber intercommunication is seted up to the upper end of support column, be equipped with the drum in the circular slot, drum female connection has the threaded rod, the upper end fixed connection of threaded rod is at the lower extreme of mount pad.

Preferably, instep massage device is including seting up the second recess at clamp plate lower extreme terminal surface, the inner wall of second recess rotates and is connected with the roller, the lateral wall circumference equipartition of roller has the movable groove, the movable groove is equipped with flexible gasbag, be equipped with the pressing pin with flexible gasbag intercommunication in the movable groove, it is equipped with the gas pocket to run through on the pressing pin, adjacent two circular pressing head and trapezoidal pressing head have been welded respectively on the pressing pin.

Preferably, the pressurized-water device includes that fixed connection is located the reciprocal lead screw of second of sliding plug intracavity in the pivot, install screw nut on the reciprocal lead screw of second, the last movable sleeve that installs of screw nut, the one end welding that screw nut was kept away from to movable sleeve has the sliding plug with the sealed sliding connection in sliding plug chamber, install the first check valve that only allows water to turn left flow from the right side on the sliding plug, the aqueduct with sliding plug chamber intercommunication is installed to the lower extreme of storage water tank, and the intercommunication department installs the second check valve that only allows water to flow to the sliding plug intracavity from the storage water tank.

Preferably, the guide way has been seted up to the lateral wall of circular slot, sliding connection has the guide block in the guide way, guide block fixed connection is on the lateral wall of threaded rod.

Preferably, one end of the worm, which is located outside the cavity of the second device, is fixedly connected with a rotating wheel, a rubber pad is glued on the rotating wheel, and anti-skid grains are arranged on the surface of the rubber pad.

Preferably, the lower extreme welding of casing has the support base, just the lower extreme veneer of support base has anti-skidding callus on the sole.

Preferably, the initial state of the spring is a compressed state.

The invention has the following beneficial effects:

1. the worm is driven to rotate by the rotation of the rotating wheel, the worm drives the worm wheel meshed with the worm to rotate, the worm wheel drives the cylinder to rotate, the cylinder drives the threaded rod in threaded connection with the cylinder to move up and down by the rotation of the cylinder, the position of the pressing plate is further adjusted, the pressing plate is preferably adjusted to be attached to the instep, and the adjustment can be carried out according to the size of the foot of a patient, so that the applicability of the motion instrument is increased;

2. the first bevel gear drives the second bevel gear to rotate, the second bevel gear drives the first reciprocating lead screw to rotate through the driving wheel, the driving belt and the driven wheel, the first reciprocating lead screw drives the supporting column to move, and the supporting column moves to enable the circular pressing head and the trapezoidal pressing head to reciprocate to massage the instep of the foot, so that the flow of blood on the instep of the patient can be promoted;

3. the pivot rotates the drive and promotes to support the board through the cam and shifts up, and then make and press the awl and massage the sole, when the pivot pivoted, drive the reciprocal lead screw rotation of second, the reciprocal lead screw rotation of second drives lead screw nut and removes, lead screw nut removes and drives sliding plug reciprocating motion, sliding plug removes the water pressure that advances the circulation intracavity with in the storage water tank, along with the removal of water inlet, align with the delivery port when the water inlet, the water under high pressure in the circulation intracavity passes through the hole for water spraying blowout in the twinkling of an eye this moment, and then massage the sole, in order to reach amazing limb nerve function, prevention ankle joint rigidity warp, effectively prevent drop of foot, promote the patient to recover.

Drawings

FIG. 1 is a schematic structural diagram of a motion apparatus for preventing deep venous thrombosis of lower limbs according to the present invention;

FIG. 2 is a schematic cross-sectional view taken along line A-A in FIG. 1;

FIG. 3 is an enlarged view of the structure at B in FIG. 1;

FIG. 4 is an enlarged view of the structure at C in FIG. 1;

fig. 5 is an enlarged schematic view of the structure at D in fig. 1.

In the figure: the device comprises a shell 1, a support block 2, a cam 3, a mounting seat 4, a first device cavity 5, a driving wheel 6, a first bevel gear 7, a second bevel gear 8, a driving motor 9, a first reciprocating lead screw 10, a rotating wheel 11, a supporting column 12, a roller 13, a driven wheel 14, a water spray hole 15, a pressing cone 16, a pressing plate 17, a spring 18, a water storage tank 19, a rotating shaft 21, a synchronous belt 22, a synchronous wheel 23, a circulating cavity 24, a water outlet 25, a water inlet 26, a lead screw nut 27, a second reciprocating lead screw 28, a first check valve 29, a sliding plug 30, a guide groove 31, a guide block 32, a cylinder 33, a worm wheel 34, a worm gear 35 worm, a threaded rod 36, a circular groove 37, a movable groove 38, a circular pressing head 39, an air hole 40, a trapezoidal pressing head 41, a telescopic air bag.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed as broadly as the present invention is capable of modification in various respects, all without departing from the spirit and scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1-5, a motion apparatus for preventing deep venous thrombosis of lower limbs comprises a casing 1, a support base welded at the lower end of the casing 1, an anti-skid foot pad glued at the lower end of the support base, two sliding chutes with corresponding positions formed at the upper end of the casing 1, a first device cavity 5 and a sliding plug cavity 43 respectively formed in the side walls of the casing 1, a driving motor 9 fixedly connected to the side walls of the casing 1, a first bevel gear 7 fixedly connected to one end of an output shaft of the driving motor 9 positioned in the first device cavity 5, a driving wheel 6 rotatably connected to the inner wall of the first device cavity 5, a second bevel gear 8 engaged with the first bevel gear 7 and coaxially and fixedly connected to the side walls of the driving wheel 6, a first groove communicated with the first device cavity formed at the upper end of the casing 1, first reciprocating lead screws 10 arranged in parallel and rotatably connected to the inner walls of the two sliding chutes, wherein one first reciprocating lead screw 10 penetrates through the inner walls of the sliding chutes, the coaxial fixedly connected with of one end that first reciprocal lead screw 10 is located first recess follows driving wheel 14, and action wheel 6 passes through synchronous belt drive with following driving wheel 14 and is connected, and threaded connection has support column 12 on the first reciprocal lead screw 10.

Install mount pad 4 through height adjusting device on support column 12, height adjusting device is including seting up the second device chamber in support column 12 lateral wall, the lateral wall of support column 12 runs through to be equipped with and rotates the worm 35 of connection at second device intracavity wall, the inner wall in second device chamber rotates and is connected with worm wheel 34, circular slot 37 with second device chamber intercommunication is seted up to the upper end of support column 12, be equipped with drum 33 in the circular slot 37, drum 33 female connection has threaded rod 36, the upper end fixed connection of threaded rod 36 is at the lower extreme of mount pad 4.

The side wall of circular slot 37 has seted up guide way 31, and sliding connection has guide block 32 in guide way 31, and guide block 32 fixed connection is on the side wall of threaded rod 36.

One end of the worm 35, which is located outside the cavity of the second device, is fixedly connected with a rotating wheel 11, a rubber pad is glued on the rotating wheel 11, and anti-skid grains are arranged on the surface of the rubber pad.

Rotate on the mount pad 4 and be connected with clamp plate 17, clamp plate 17 passes through

spring

18 and 4 elastic connection of mount pad, instep massage device is installed to the lower terminal surface of clamp plate 17, instep massage device is including seting up the second recess at clamp plate 17 lower terminal surface, the inner wall of second recess rotates and is connected with roller 13, the lateral wall circumference equipartition of roller 13 has movable groove 38, be equipped with flexible gasbag 42 in the movable groove 38, be equipped with the pressing pin with flexible gasbag 42 intercommunication in the movable groove 38, it is equipped with gas pocket 40 to run through on the pressing pin, it has circular pressing head 39 and trapezoidal pressing head 41 to weld respectively on two adjacent pressing pins.

The lateral wall fixedly connected with storage water tank 19 of casing 1, be equipped with pivot 21 along the horizontal direction in the casing 1, the one end of pivot 21 runs through the inner wall of casing 1 and extends to first device intracavity 5, the one end fixedly connected with of pivot 21 in being located first device intracavity 5 and the third bevel gear of second bevel gear 8 meshing, the upper end of casing 1 runs through and is equipped with a plurality of pressing awl 16, the one end welding that pressing awl 16 is located casing 1 has support piece 2, fixedly connected with and support the corresponding cam 3 in piece 2 position on the pivot 21, pressing awl 16 has seted up hole for water spraying 15 along its radial, pressing the lateral wall of awl 16 and seted up the water inlet 26 with hole for water spraying 15 intercommunication, circulation chamber 24 with smooth plug chamber 43 intercommunication is seted up to the up on the up end of casing 1, delivery port 25 with water inlet 26 complex is seted up to the lateral wall of circulation chamber 24, the other end of pivot 21 runs through the inner wall of casing 1 and extends to.

The water pressing device is arranged at one end, located in the sliding plug cavity 43, of the rotating shaft 21 and used for pressing water in the water storage tank 19 into the circulating cavity 24, the water pressing device comprises a second reciprocating lead screw 28 fixedly connected to the rotating shaft 21 and located in the sliding plug cavity 43, a lead screw nut 27 is arranged on the second reciprocating lead screw 28, a movable sleeve 44 is arranged on the lead screw nut 27, a sliding plug 30 in sealing sliding connection with the sliding plug cavity 43 is welded at one end, far away from the lead screw nut 27, of the movable sleeve 44, a first one-way valve 29 allowing water to flow from the right side to the left side is arranged on the sliding plug 30, a water guide pipe 20 communicated with the sliding plug cavity 43 is arranged at the lower end of the water storage tank 19, and a second one-way valve allowing water to flow from the water storage tank 19 into the sliding.

The same ends of the two first reciprocating screw rods 10 are coaxially and rotatably connected with synchronizing wheels 23, and the two synchronizing wheels 23 are in transmission connection through a synchronizing belt 22.

In the invention, when the sports apparatus is used, an operator firstly places feet to be massaged on the shell 1, then the rotating wheel 11 is rotated, the rotating wheel 11 rotates to drive the worm 35 to rotate, the worm 35 rotates to drive the worm wheel 34 engaged with the worm to rotate, the worm wheel 34 rotates to drive the cylinder 33 to rotate, the cylinder 33 rotates to drive the threaded rod 36 connected with the cylinder to move up and down, further adjusting the position of the pressing plate 17, preferably adjusting the pressing plate 17 to be attached to the instep, turning on a switch of the driving motor 9, driving the second bevel gear 8 to rotate through the first bevel gear 7 when the driving motor 9 rotates, driving the first reciprocating lead screw 10 to rotate through the driving wheel 6, the driving belt and the driven wheel 14 when the second bevel gear 8 rotates, driving the supporting column 12 to move through the rotation of the first reciprocating lead screw 10, and enabling the circular pressing head 39 and the trapezoidal pressing head 41 to massage the instep in a reciprocating manner when the supporting column 12 moves;

the second bevel gear 8 rotates to drive the rotating shaft 21 to rotate by driving the third bevel gear, the rotating shaft 21 rotates to drive the supporting plate 2 to move upwards through the cam 3, and further the pressing cone 16 is enabled to massage the sole of a foot, the rotating shaft 21 rotates and simultaneously drives the second reciprocating lead screw 28 to rotate, the second reciprocating lead screw 28 rotates and drives the lead screw nut 27 to move, the lead screw nut 27 moves and drives the sliding plug 30 to move in a reciprocating mode, the sliding plug 30 moves to enable water pressure in the water storage tank 19 to enter the circulation cavity 24, along with the movement of the water inlet 26, when the water inlet 26 is aligned with the water outlet 25, high-pressure water in the circulation cavity 24 is sprayed out through the water spraying hole 15 instantly at the moment, and then the sole of the foot is massaged, so that the function of stimulating limb nerves is achieved, the ankle joint stiffness.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The sports instrument for preventing the deep venous thrombosis of the lower limbs comprises a shell (1) and is characterized in that two sliding grooves corresponding to each other in position are formed in the upper end of the shell (1), a first device cavity (5) and a sliding plug cavity (43) are respectively formed in two side walls of the shell (1), a driving motor (9) is fixedly connected to the side wall of the shell (1), a first bevel gear (7) is fixedly connected to one end, located in the first device cavity (5), of an output shaft of the driving motor (9), a driving wheel (6) is rotatably connected to the inner wall of the first device cavity (5), a second bevel gear (8) meshed with the first bevel gear (7) is coaxially and fixedly connected to the side wall of the driving wheel (6), a first groove communicated with the first device cavity is formed in the upper end of the shell (1), and first reciprocating lead screws (10) arranged in parallel are rotatably connected to the inner walls of the two sliding grooves, one of the reciprocating lead screw (10) runs through the inner wall of the chute and extends into a first groove, one end of the first reciprocating lead screw (10) which is positioned in the first groove is coaxially and fixedly connected with a driven wheel (14), the driving wheel (6) is connected with the driven wheel (14) through synchronous belt transmission, a supporting column (12) is connected onto the first reciprocating lead screw (10) in a threaded manner, a mounting seat (4) is mounted on the supporting column (12) through a height adjusting device, a pressing plate (17) is rotatably connected onto the mounting seat (4), the pressing plate (17) is elastically connected with the mounting seat (4) through a spring (18), a instep massage device is mounted on the lower end face of the pressing plate (17), a water storage tank (19) is fixedly connected onto the outer side wall of the shell (1), a rotating shaft (21) is arranged in the shell (1) along the horizontal direction, one end of the rotating shaft (21) runs through the inner wall of the shell (1) and extends into a first device cavity, one end of the rotating shaft (21) positioned in the first device cavity (5) is fixedly connected with a third bevel gear meshed with the second bevel gear (8), the upper end of the shell (1) is provided with a plurality of pressing cones (16) in a penetrating manner, one end of each pressing cone (16) positioned in the shell (1) is welded with the abutting block (2), the rotating shaft (21) is fixedly connected with a cam (3) corresponding to the abutting block (2), the pressing cones (16) are provided with water spray holes (15) along the radial direction of the pressing cones, the side wall of each pressing cone (16) is provided with a water inlet (26) communicated with the water spray holes (15), the upper end face of the shell (1) is provided with a circulation cavity (24) communicated with the sliding plug cavity (43), the side wall of the circulation cavity (24) is provided with a water outlet (25) matched with the water inlet (26), and the other end of the rotating shaft (21) penetrates through the inner wall of the shell (1) and extends into the sliding, the one end that pivot (21) are located sliding plug chamber (43) is installed and is used for advancing the water pressure of water storage tank (19) in the pressurized-water device in circulation chamber (24), two equal coaxial rotation in same end of first reciprocal lead screw (10) is connected with synchronizing wheel (23), two connect through hold-in range (22) transmission between synchronizing wheel (23).

2. The exercise apparatus for preventing deep venous thrombosis of lower limbs according to claim 1, wherein the height adjusting device comprises a second device cavity formed in the side wall of the supporting column (12), a worm (35) rotatably connected to the inner wall of the second device cavity penetrates through the side wall of the supporting column (12), a worm wheel (34) is rotatably connected to the inner wall of the second device cavity, a circular groove (37) communicated with the second device cavity is formed in the upper end of the supporting column (12), a cylinder (33) is arranged in the circular groove (37), a threaded rod (36) is connected to the inner thread of the cylinder (33), and the upper end of the threaded rod (36) is fixedly connected to the lower end of the mounting seat (4).

3. The exercise apparatus for preventing deep venous thrombosis of lower limbs according to claim 1, wherein the instep massage device comprises a second groove formed in a lower end face of the pressing plate (17), a roller (13) is rotatably connected to an inner wall of the second groove, movable grooves (38) are circumferentially and uniformly formed in a side wall of the roller (13), telescopic air bags (42) are arranged in the movable grooves (38), pressing needles communicated with the telescopic air bags (42) are arranged in the movable grooves (38), air holes (40) are formed in the pressing needles in a penetrating mode, and a circular pressing head (39) and a trapezoidal pressing head (41) are welded to every two adjacent pressing needles respectively.

4. The exercise apparatus for preventing deep venous thrombosis of lower limbs according to claim 1, the water pressing device comprises a second reciprocating screw rod (28) fixedly connected with the rotating shaft (21) and positioned in the sliding plug cavity (43), a screw nut (27) is arranged on the second reciprocating screw (28), a movable sleeve (44) is arranged on the screw nut (27), one end of the movable sleeve (44) far away from the screw nut (27) is welded with a sliding plug (30) which is in sealed sliding connection with the sliding plug cavity (43), a first one-way valve (29) which only allows water to flow from the right to the left is arranged on the sliding plug (30), the lower end of the water storage tank (19) is provided with a water guide pipe (20) communicated with the sliding plug cavity (43), and a second one-way valve is arranged at the communication part and only allows water to flow from the water storage tank (19) to the sliding plug cavity (43).

5. The exercise apparatus for preventing deep venous thrombosis of lower limbs according to claim 2, wherein the side wall of the circular groove (37) is provided with a guide groove (31), a guide block (32) is slidably connected in the guide groove (31), and the guide block (32) is fixedly connected to the side wall of the threaded rod (36).

6. The exercise apparatus for preventing deep venous thrombosis of lower limbs according to claim 2, wherein a rotating wheel (11) is fixedly connected to one end of the worm (35) located outside the cavity of the second device, a rubber pad is glued on the rotating wheel (11), and anti-skid grains are arranged on the surface of the rubber pad.

7. The exercise apparatus for preventing deep venous thrombosis of lower limbs according to claim 1, wherein a support base is welded to the lower end of the casing (1), and an anti-skid foot pad is glued to the lower end of the support base.

8. An exercise apparatus for the prevention of deep vein thrombosis of the lower extremities as claimed in claim 1 wherein said spring (18) is initially in a compressed state.