CN202198800U - Ankle joint bending and stretching exerciser - Google Patents

Abstract

The utility model relates to an ankle joint flexion and extension exerciser, the structure of which comprises a foot plate, a deceleration motor, a motor base, a bottom plate, a base, two rocker arm frames, two L-shaped rocker arms, an eccentric wheel, a rocker shaft, a foot plate shaft, Screw hole lifting block, lifting screw rod, guide hole lifting block, lifting guide rod and adjusting knob. When in use, the deceleration motor drives the L-shaped rocker arm to make an arc-shaped reciprocating motion around the rotating shaft through the eccentric wheel, and the front end of the L-shaped rocker arm bends the arm to drive the foot plate to make an arc-shaped reciprocating motion, and then forces the heel to rotate around the ankle joint to drive the muscles of the lower limbs. Do flexion and extension exercises to promote the return of blood from the lower limbs to the heart, which can effectively prevent the formation of deep vein thrombosis of the lower limbs in surgical patients who have been bedridden for a long time. Due to the reasonable design, the range of flexion and extension can be adjusted. The range of flexion and extension can be adjusted coarsely and finely. The low-voltage DC planetary gear motor is selected, which is safe and reliable. Adjusting the motor speed can also adjust the frequency of flexion and extension. It is especially suitable for helping bedridden patients to perform ankle joint activities.

Description

Ankle flexion and extension exerciser

technical field

The utility model relates to a sports apparatus, in particular to an apparatus capable of simulating the ankle joint movement of a surgical patient during normal walking, helping the muscles of the lower limbs to contract and preventing stagnation of blood flow, and belongs to the medical and health care apparatus for passive exercise.

Background technique

Under normal human conditions, the muscles of the lower limbs flex and extend the ankle when walking, and the contraction of the muscles of the lower limbs will compress the veins of the lower limbs, helping to squeeze the blood of the lower limbs back to the heart, especially the calf muscles. Clinically, most surgical patients stay in bed for a long time, which leads to immobility of lower limb muscles, slows down blood flow, and easily coagulates to form thrombus in blood vessels. Orthopedic joint surgery patients have a very high chance of deep vein thrombosis of the lower extremities. Once a large thrombus falls off the blood vessel, it will embolize the blood vessels of the lungs, and the probability of death is very high. Therefore, it is of great clinical significance to maintain the ankle joint activity of bedridden patients.

Contents of the invention

The purpose of this utility model is to help surgical patients squeeze the lower limb blood back to the heart, provide a reasonable structure design, simple and convenient use, adjustable flexion and extension range, drive lower limb muscle movement, promote lower limb blood backflow to the heart, and prevent thrombus formation Ankle flexion and extension exerciser.

The ankle joint flexion and extension exerciser of the present utility model includes a foot plate, a deceleration motor and a motor seat, and also includes a base plate, a base, 2 rocker frames, 2 L-shaped rocker arms, an eccentric wheel, a rocker shaft, a foot plate shaft, and a screw hole Lifting block, lifting screw, guide hole lifting block, lifting guide rod and adjustment knob. The L-shaped rocker arm is composed of a longitudinal arm and a curved arm. The lower end of the arm is connected with the bending arm and has a rocker hole, and the front end of the bending arm is provided with a square foot plate hole, in which the base is installed on the bottom plate, and the lower part of the two rocker arms is clamped at both ends of the base and fixedly connected with the bottom plate. There is a rotating shaft at the upper end of the rocker arm frame, and the upper ends of the two L-shaped rocker arms are respectively hoisted on the two rotating shafts through the rotating holes, and the two ends of the rocker arm shaft are fixed on the rocking shaft holes at the lower ends of the two L-shaped rocker arms , and an arc-shaped swing hole corresponding to the swing curve of the rocker shaft is provided at the lower part of the rocker arm frame. On the shaft, the deceleration motor is installed on the motor base, and the output shaft of the deceleration motor extends out of the motor base and is fixedly connected with the center hole of the eccentric wheel. The eccentric shaft on the eccentric wheel is installed in the longitudinal groove of the L-shaped rocker arm. The hole lifting block is fixed on both sides of the motor base in parallel, the lifting guide rod is inserted into the lifting guide hole of the guide hole lifting block and installed on the rocker frame, and the lifting screw is screwed into the lifting screw hole of the screw hole lifting block and installed On the rocker arm frame, one end of the lifting screw is connected with the adjusting knob extending out of the rocker arm frame.

In order to expand the range of flexion and extension of the ankle joint and make the range of flexion and extension continuously adjustable within a reasonable range, the angle β between the line between the rotation hole of the L-shaped rocker arm and the hole of the square foot plate and the longitudinal arm is 40 to 50 °, the length of the longitudinal arm is 110-130 mm, and the length of the longitudinal slot is 60-70 mm. The eccentric wheel is provided with 4 eccentric holes, and the distances between the 4 eccentric holes and the central hole are respectively selected as 9mm, 11mm, 13mm and 15mm.

In order to prevent the soles of the feet from leaving the feet, a lacing hole can be provided on the feet, so that the feet and the feet can be tied together with a tie. For aesthetics and safety, a cover plate can be installed outside the rocker frame.

The ankle joint flexion and extension exerciser of the utility model, when in use, the deceleration motor drives the L-shaped rocker arm to make arc-shaped reciprocating motions around the rotating shaft through the eccentric wheel, and the front end of the L-shaped rocker arm drives the foot plate to make arc-shaped reciprocating motions, thereby forcing The heel rotates around the ankle joint to drive the muscles of the lower limbs to perform flexion and extension exercises, which promotes the return of blood from the lower limbs to the heart, and can effectively prevent the formation of deep vein thrombosis of the lower limbs in surgical patients who have been bedridden for a long time. Due to the reasonable design, the range of flexion and extension can be adjusted. The range of flexion and extension can be adjusted coarsely and finely. The low-voltage DC planetary gear motor is selected, which is safe and reliable. Adjusting the motor speed can also adjust the frequency of flexion and extension. It is especially suitable for helping bedridden patients to perform ankle joint activities.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram in the utility model:

Fig. 2 is a schematic diagram of the structure on the right side of accompanying drawing 1;

Fig. 3 is a schematic diagram of the L-shaped rocker arm structure in the utility model;

Fig. 4 is the structural representation of the eccentric wheel in the utility model;

Fig. 5 is a structural schematic diagram of the motor seat in the utility model.

Detailed ways

Referring to accompanying drawings 1 to 5, 1 among the figures is the rotating shaft on the rocker arm frame on the left side, 2 is the adjusting knob, 3 is the foot plate, 4 is the tie hole, and 5 is the rotating shaft and the rocking arm frame on the right side. Rotation hole on the arm, 6 is the longitudinal arm of the L-shaped rocking arm, 7 is the longitudinal groove, and 8 is the eccentric shaft. 9 is the foot plate shaft, 10 is the square foot plate hole, 11 is the bottom plate, 12 is the bent arm of the L-shaped rocker arm, 13 is the rocker arm shaft and the rocker shaft hole, 14 is the eccentric wheel, 15 is the arc swing hole, and 16 is the motor seat 17 is a screw hole lifting block, 18 is a lifting screw, 19 is a rocking arm frame on the right side, 20 is a base, 21 is a guide hole lifting block, 22 is a lifting guide rod, 23 is a lifting guide hole, and 24 is a lifting screw. The ankle joint flexion and extension exerciser of the present utility model, its structure is as shown in Figure 1 and Figure 2, mainly comprises foot plate 3, deceleration motor (installed in the base 20, not drawn in the figure) and motor base 16, also includes base plate 11 , Base 20, 2 rocker arms 19, 2 L-shaped rocker arms, eccentric wheel 14, rocker shaft 13, foot plate shaft 9, screw hole lifting block 17, 18 lifting screw, guide hole lifting block 21, lifting guide rod 22 and adjustment knob 2. The L-shaped rocker arm is composed of a longitudinal arm 6 and a curved arm 12, the upper end of the longitudinal arm is provided with a rotating hole 5, the middle and lower part of the longitudinal arm is provided with a longitudinal groove 7, and the lower end of the longitudinal arm 6 is connected with the curved arm 12 and is provided with a rocking shaft hole 13. The front end of the curved arm 12 is provided with a square foot plate hole 10, wherein the base 20 is installed on the base plate 11, and the lower parts of the two rocker brackets 19 are clamped on both ends of the base 20 and are fixedly connected with the base plate 11. The upper ends of the two rocker brackets are A rotating shaft 1 and 5 are provided respectively, and the upper ends of the two L-shaped rocker arms are hoisted on the two rotating shafts 1 and 5 through the rotating holes respectively, and the two ends of the rocker arm shaft 13 are fixed on the lower ends of the two L-shaped rocker arms. On the shaft hole, an arc-shaped swing hole 15 corresponding to the swing curve of the rocker shaft is provided at the bottom of the rocker frame. The lower part of the foot plate 3 is fixedly installed on the foot plate shaft 9, the geared motor is installed on the motor seat 16, the output shaft of the geared motor extends out of the motor seat 16 and is fixedly connected with the center hole 14-5 of the eccentric wheel 14, and the eccentric shaft 8 on the eccentric wheel 14 is installed In the longitudinal groove 7 of the L-shaped rocker arm, the screw hole lifting block 17 and the guide hole lifting block 21 are fixed on both sides of the motor base 16 in parallel. Referring to Figure 5, the lifting guide rod 22 is inserted into the lifting guide of the guide hole lifting block 21. In the hole 23 and installed on the rocker frame 19, the lifting screw rod 18 is screwed in the lifting screw hole 24 of the screw hole lifting block 17 and installed on the rocker frame 19, and one end of the lifting screw rod 18 is connected with the end of the rocker frame Adjustment Knob 2 is connected. Rotating the lifting screw rod 18 can make the screw hole lifting block 17 drive the motor and the eccentric wheel to rise or fall, and the flexion and extension range can be fine-tuned precisely. The motor adopts a low-voltage DC planetary gear reducer motor, and the flexion and extension frequency can also be adjusted by adjusting the motor speed.

In order to expand the range of flexion and extension of the ankle joint and make the range of flexion and extension continuously adjustable within a reasonable range, the angle β between the line between the rotation hole 5 of the L-shaped rocker arm and the square foot plate hole 10 and the longitudinal arm 6 is: 40-50°, as shown in Figure 3, and the length L of the longitudinal arm 6 is selected as 110-130 mm, and the length L1 of the longitudinal groove 7 is 60-70 mm. On described eccentric wheel 14, be provided with 4 eccentric holes 14-1, 14-2, 14-3, 14-4, 4 eccentric holes are respectively 9mm, 11mm, 13mm and 15mm apart from the central hole, as shown in Figure 4 As shown, the eccentric shaft is pre-installed on different eccentric holes, and the range of flexion and extension can be roughly adjusted in a large range.

In order to prevent the sole of the foot from leaving the foot plate, a lace hole 4 can be provided on the foot plate 3, so that the pin and the foot plate can be tied together with a lace.

Claims (4)

1. an ankle joint flexion and extension device comprises sole, reducing motor and motor cabinet, it is characterized in that also comprising base plate, base, 2 rocker stands, 2 L shaped rocking arms, eccentric, rocker arm shaft, sole axle, screw elevator, lifting screw, guide hole elevator, lifting guide pillar and adjusting knobs; Said L shaped rocking arm is made up of vertical arm and bend arm, and vertically the arm upper end is provided with rotation hole, and vertically the arm middle and lower part is provided with cannelure; Vertically the arm lower end is connected with bend arm and is provided with the rocker hole; The bend arm front end is provided with square sole hole, and wherein, base is installed on the base plate; 2 rocker stand bottoms are installed in the base two ends and are fixedly connected with base plate; 2 rocker stand upper ends are respectively equipped with a turning cylinder, and 2 L shaped rocking arm upper ends are lifted on 2 turning cylinders through rotation hole respectively, and the rocker arm shaft two ends are packed on the rocker hole of 2 L shaped rocking arm lower ends; And be provided with the corresponding arc of rocker arm shaft swing curve in the rocker stand bottom and wave the hole; Sole axle two ends are fixedly connected with the square sole hole of the bend arm front end that stretches out rocker stand, and the sole bottom is fixedly mounted on the sole axle, and reducing motor is contained on the motor cabinet; The reducing motor output shaft stretches out motor cabinet and is fixedly connected with the eccentric centre bore; Eccentric shaft on the eccentric is installed in the cannelure of L shaped rocking arm, the parallel motor cabinet both sides that are packed in of screw elevator with the guide hole elevator, and lifting guide pillar is inserted in the up-down guide hole of guide hole elevator and is installed on the rocker stand; The lifting screw spinning is in the up-down screw of screw elevator and be installed on the rocker stand, and an end of lifting screw is connected with the adjusting knob that stretches out rocker stand.

2. ankle joint flexion and extension device as claimed in claim 1; It is characterized in that the rotation hole of said L shaped rocking arm and the angle between the line between the square sole hole and the vertical arm are 40～50 °; Vertically the length of arm is 110～130 mm, and the length of cannelure is 60～70 mm.

3. according to claim 1 or claim 2 ankle joint flexion and extension device is characterized in that said eccentric is provided with 4 eccentric orfices, and the distance of 4 eccentric orfices and centre bore is elected 9mm, 11mm, 13mm and 15mm respectively as.

4. ankle joint flexion and extension device as claimed in claim 3 is characterized in that said sole is provided with the frenulum hole, and cover plate is equipped with in the rocker stand outside.

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