KR20110017047A - Apparatus for evaluation hamstring tightness or flexibility and method thereof - Google Patents

Abstract

PURPOSE: An apparatus and a method for evaluating the tightness or flexibility of hamstring are provided to quantitatively measure the tightness and flexibility by electrically sensing the movement of pelvis. CONSTITUTION: An apparatus for evaluating the tightness or flexibility includes a base unit(100), a pelvis sliding unit(200), a knee angle measuring unit(400), and a controller(500). The base unit forms a frame by connecting a plurality of horizontal members and vertical members. The pelvis sliding unit is formed on the base unit. The pelvis of the user slides forward and backward on the pelvis sliding unit according to the extension of the hamstring. The knee angle measuring unit measures the angle of the knee. An AC motor(350) and an encoder(310) are installed on the knee angle measuring unit. A roller limit switch(330) is electrically connected to the AC motor through the controller.

Description

Apparatus and method for evaluating thigh muscle tension and flexibility {APPARATUS FOR EVALUATION HAMSTRING TIGHTNESS OR FLEXIBILITY AND METHOD THEREOF}

The present invention relates to an apparatus and method for evaluating thigh muscle tension and flexibility, and more particularly, inducing the extension to the user's knee joint at a constant angular velocity using an AC motor while the user is sitting on a chair, and thus the pelvis. The present invention relates to an apparatus and method for evaluating thigh muscle tension and flexibility that can quantitatively evaluate the thigh muscle flexibility and flexibility of the thigh muscle simply and efficiently by sensing the movement of the thigh.

In general, the posterior thigh muscles form the back boundary of the knee, which is the tendon of the medial semimembranosus and semitendinosus and the lateral biceps femoris.

All three of these muscles originate in the sciatic nodules and are inserted into the tibia and fibula, so that the hip and knee joints are located between these muscles, thus categorizing them into two joint muscles. Muscles spanning the two joints are easily tensioned, shortened, or built up by improper posture, and as the build up progresses, the pelvis is inclined posteriorly, leading to scoliosis, abnormal sitting position, and walking abnormalities.

Wheelchair-disabled people are affected by pressure distribution at the bottom of the chair due to the inclination of the pelvis, causing pressure sores. The thigh hind muscle strain in the elderly causes knee joint and hip flexion buildup, making it impossible to walk Have a great walk.

Muscle build-up is a growth barrier in growing children. In recent years, the number of lower limbs, including thigh hind muscle strain, is increasing in adolescent patients, and in infants, thigh hind muscle tension is measured and used to diagnose cerebral palsy. As it leads to sports injuries, the evaluation of the tension and flexibility of the thigh muscles is very important in terms of rehabilitation and sports medicine.

On the other hand, in order to evaluate the tension and flexibility of the conventional clinical thigh hind muscles, the thigh hind muscle tension and flexibility was evaluated by facilitating moving the lower leg with the hands of the clinician to lie down on the bed.

This is very cumbersome and inconvenient, making it difficult to evaluate efficiently, and repetitive work has not been done consistently. In addition, quantitative evaluation was not possible due to the diagnosis by subjective judgment of the clinician, and there was a problem that the analysis of the measurement results under various conditions was not performed because the measurement values were very limited.

It is an object of the present invention to provide an apparatus and method for evaluating thigh back muscle tension and flexibility that can quantitatively evaluate the tension and flexibility of the thigh muscles simply and efficiently.

Another technical problem to be achieved by the present invention is to allow the user to induce the extension of the user's knee joint at a constant angular velocity by using a motor in a sitting position on the chair, thereby detecting the movement of the pelvis electrically and electronically It is to provide a device and method for evaluating thigh back muscle tension and flexibility that can easily and quantitatively evaluate the tension and flexibility of the thigh.

Another technical problem to be achieved by the present invention is to provide an apparatus and method for evaluating thigh back muscle tension and flexibility that can be easily analyzed for a measurement result under various conditions without limiting the measurement value.

The present invention according to one aspect for achieving the above object, a plurality of horizontal member and the vertical member is connected to each other the base portion to form a frame (frame); A pelvis sliding part installed on the base part, the pelvis of the user sliding back and forth according to the height of the thigh muscle of the user; A knee angle measurement unit connected to both sides of the upper end of the base part and configured to measure an angle of a knee according to the user's knee extension or flexion; A lower body support part which pivots up and down in association with the rotation axis of the knee angle measuring part and supports the lower body of the user; And it provides a thigh hind muscle tension and flexibility evaluation device comprising a controller (controller) for controlling the operation of the knee angle measuring unit.

In addition, the thigh back muscle tension and flexibility evaluation device made of a chair shape of the present invention, the footrest to put the foot; A connection member for connecting between the footrest and the thigh seat (chair butt support); A motor for rotating the connection member; And an angle measuring unit measuring a degree of rotation of the connection member.

In addition, the thigh hind muscle tension and flexibility evaluation device made of a chair shape of the present invention, the thigh seat when the sacrum is attached to the support plate 150 of the chair back; A lower body support having a footrest for placing a leg when the sacrum is attached to the support plate 150 of a chair back and a connection member positioned between the footrest and the thigh seat; It characterized in that it comprises a; motor to rotate the lower support body to extend in the state where the hip joint is bent at 90 degrees.

The thigh hind muscle tension and flexibility evaluation device made of a chair type of the present invention further includes an angle measuring unit for measuring the degree of rotation of the lower body support.

The femoral seating part includes two pelvic sliding parts configured to slide back and forth.

The angle measuring unit is formed of an encoder.

The thigh hind muscle tension and flexibility evaluation device made of the chair type of the present invention further includes a limit switch for detecting the sliding of the pelvis sliding portion.

The thigh hind muscle tension and flexibility evaluation device made of a chair type of the present invention, when a signal indicating that the pelvis sliding portion is sliding from the limit switch is input, receives a value measuring the degree of rotation of the lower body support from the angle measuring unit It is further provided with a control unit for calculating and outputting.

According to the present invention, the tension and flexibility of the thigh muscles of the thigh through the constant repetitive operation in the user sitting comfortably without the inconvenience or hassle to evaluate the thigh muscle tension and flexibility by facilitating lying on the bed Efficient quantitative evaluation

In addition, since the measurement value is not limited, the analysis of the measurement result under various conditions may be easily performed.

That is, the system for evaluating the tension and flexibility of the thigh muscles of the present invention extends the knee joint using an AC motor in a sitting position of a chair, and is provided with a linear motion system to induce the movement of the pelvis. In order to detect this movement, a mini limit switch is installed, and when the knee angle exceeds a certain angle, it is detected by the switch to stop the knee extension by the motor and measure the knee angle at that time to show the result value. The clinically simple and quantitative data is different from that of lying on the bed and moving the lower leg with the doctor's hand to evaluate thigh hindmuscular tension and flexibility by palpation.

The principle of the thigh muscle flexibility and flexibility evaluation system of the present invention is that when the user sits close to the back of the sacrum, the hip joint is bent at 90 degrees, and when one knee joint is slowly extended, the thigh As the back muscles stretch, the pelvis slides forward when it is no longer stretched. Detecting this moment and measuring the knee joint angle can provide information to evaluate the tension and flexibility of the thigh muscles of the thigh.

Hereinafter, the configuration and operation of the thigh hind muscle tension and flexibility evaluation apparatus according to an embodiment of the present invention will be described in detail with the accompanying drawings.

1 is a perspective view showing the thigh back muscle tension and flexibility evaluation device according to an embodiment of the present invention, Figure 2 is a partially separated perspective view of the thigh back muscle tension and flexibility evaluation device according to the present invention, Figure 3 is It is the separated perspective view and partial enlarged view which show the pelvis sliding part in thigh hind muscle tension and flexibility evaluation apparatus which concern on this invention.

4 is a sectional view taken along the line A-A of FIG. 3, and FIGS. 5 and 6 are plan views showing the operating state of the limit switch in the thigh hind muscle tension and flexibility evaluation device according to the present invention.

7 and 8 are separated perspective views showing the scaffold member in the thigh back muscle tension and flexibility evaluation device according to the present invention, Figure 9 is a thigh back muscle tension and flexibility evaluation device according to the present invention In Figure 10 is a perspective view showing a detachable member for tying the leg under the user's knee, Figure 10 and Figure 11 is a side view showing the state of use of the thigh back muscle tension and flexibility evaluation device according to the present invention.

1 to 3, the thigh hind muscle tension and flexibility evaluation apparatus according to an embodiment of the present invention, the base portion 100, the pelvis sliding portion 200 is installed on the base portion, and the base portion The knee angle measuring unit 300 connected to both sides of the upper end of the 100, the lower body support 400 to rotate up and down in conjunction with the pivot shaft 320 of the knee angle measuring unit 300, and the knee angle measurement It includes a controller (500) for controlling the operation of the unit (300).

As shown in FIGS. 1 and 2, the base part 100 has a plurality of horizontal members 110 and vertical members 120 having a rectangular cross section connected to each other to form a chair-shaped frame as a whole. ). The base part 100 may have a fixed structure to be in close contact with the bottom surface, or, if necessary, when the casters 130 are installed at each corner of the lower part, the base part 100 may be moved to a desired place.

In addition, the back support means for supporting the back of the user is installed on the upper rear of the base portion 100, the back support means is a bracket having a substantially 'Z' shaped cross-section on both sides of the upper rear of the base portion 100 A bracket 140 is fixedly installed, and a support plate 150 made of a transparent material is vertically attached to the base part 100 between the brackets.

On the other hand, on the horizontal member 110 provided on the upper left and right sides of the base portion 100, the housing member 160 of a predetermined length with both ends open is fixedly attached, and one end of the connection member 170 having a rectangular cross section is Penetrating through the housing member 160, the other end of the connection member 170 is connected to the lower end of the bracket 140, while the two members 160, 170 are in contact with each other the lock / release handle ( 180 is connected through the lock / release handle 180 according to the user's body, and maintains the connection state of the two members 160 and 170, or by releasing the connecting member 170 in the front and rear direction By sliding, it is possible to adjust the length of the thigh of the upper end of the base portion 100 where the user sits.

1 to 4, the pelvis sliding portion 200 is a support plate 210 having a rectangular shape is disposed on the horizontal member 110, a plurality of rails ( 220 is fixedly installed at equal intervals along the width direction on the support member 210, and raceway grooves 230 are formed on both sides of the rail 220, respectively.

In addition, a slider 250 moves along the rail 220 via a ball 240 in rolling contact with the track groove 230, and the user moves on the slider 250. A thigh seating member 260 in the form of a seat is attached as it is separated from side to side.

1 and 2, the knee angle measuring unit 300, the AC motor for generating power 350 is fixed to each side of the vertical member 120 of the base portion 100, The power generated by the AC motor 350 is transmitted to the rotating shaft 320 via the speed reducer 340, and a roller type limit switch 330 is provided through the controller 500. It is electrically connected to the AC motor 350.

In addition, an encoder 310 is provided between the speed reducer 340 and the AC motor 350 to function as an angle sensor for measuring the knee angle of the user in association with the operation stop of the AC motor. have.

1, 2, 7, and 8, the lower supporter 400 has a large connecting member 412 having a hollow rectangular cross section in a direction perpendicular to the pivot shaft 320. The small connecting member 414 is fixedly connected and has the same cross section as the large connecting member 412 is inserted into the large connecting member 412 to form a multi-stage structure. The connecting members 412 and 414 are connected to the length of the user's leg by maintaining the connection state through the lock / release handle 416 or by adjusting the length of the connecting members 412 and 414 through release. It is possible.

On the other hand, the scaffold member 420 is connected to the lower end of the small connecting member 414 in the vertical direction, the scaffold member 420 as shown in Figs. A pair of front and rear slits 422a and 422b having an elliptic shape is provided, and a pair of locking and unlocking pairs of support members 424 supporting the user's heel on the rear side slit 422b. It is connected through the handle 426, a pair of detachable members 428 in the form of a band for supporting the user's toes and instep on the front side slit 422a is connected, the detachable member is a known Velcro Hermaid means of tape (velcro tape, also known as magic tape) are provided.

Accordingly, the footrest member 420 also supports the heel of the support member 424 at a desired position along the longitudinal direction of the rear side slit 422b according to the physical condition (foot length) of the user, and the foot length of the user. By covering the detachable member 428 on the circumference of the foot at the desired position along the longitudinal direction of the front slit 422a, and by connecting the male means, the length of the variable in the process of using the scaffold member 420 It is possible.

On the other hand, as shown in Figure 9, on the upper side of the small (small) connecting member 414, the leg under the knee of the user according to the use of the thigh back muscle tension and flexibility evaluation device according to the present invention ( Small) A detachable member 428-1 is further provided to bind and fix the connecting member 414.

As shown in FIG. 1, the controller 500 controlling the operation of the knee angle measuring unit includes a power lamp 510, an emergency button 520, and an on / off switch. 530, left and right AC motor speed control switches 540 and 542, left and right leg angle display lamps 550 and 552, and left and right leg up and down buttons 560 and 562, respectively.

On the other hand, the thigh hind muscle tension and flexibility evaluation method according to an embodiment of the present invention is performed by the above-described device, this will be described with reference to FIGS. 5, 6, 10 and 11.

First, in a state in which the user sits comfortably on the back plate 150 on the thigh seating member 260 to fit the body size of the user, that is, the footrest member 420, the lower body support 400, and the base. The length of the top of the portion 100 is varied.

Then, when the user sits closely to the sacrum on the support plate 150, both hip joints are bent at 90 °, and the knee joint is also bent at 90 °.

With the user's sitting position fixed as much as possible, the on / off switch 530 of the controller 500 is turned on, and then the corresponding AC motor speed control switch 540 and 542 corresponding to the desired leg, that is, the left or right leg, is turned on. Enter the desired angular velocity, and using the leg up and down buttons (560,562) to start the knee extension / flexion.

At this time, the rotation shaft 320 is rotated at a constant speed by the AC motor 350, thereby gradually extending the hind muscles of the thigh by extending the left / right knee joint to be evaluated.

As described above, the pelvis is slid forward at the moment when it is no longer stretched as the hind muscles are stretched to the maximum. The pelvic back muscle tension and flexibility using the pelvic movement or pelvic tilting Evaluate.

That is, when the pelvis slides forward, the slider 250 moves on the rails 220 through the ball 240, and at the same time, the femoral seating member 260 on which the user sits also moves forward and then switches. The sliding moment of the femoral seating member 260 is detected by the limit switch 330 while pushing the roller 332 serving as a contact function.

The controller 500 receiving the signal of the limit switch 330 stops the movement of the AC motor 350 and measures the knee angle at this time through the encoder 310 and then measures the knee angle and angular velocity. Results are displayed via the leg angle indicator lamps (550, 552) for easy viewing by the user, and based on the knee angle and angular velocity results thus obtained, useful information can be used to evaluate the tension and flexibility of the thigh muscles of the user. Can be.

In the above process, it is possible to measure the knee angle and angular velocity through a much simpler and quantitatively constant repetitive operation than the conventional evaluation method in a state where the user is sitting comfortably on the base portion 100 having a chair shape unlike the conventional process. Based on this, the femoral back muscle tension and flexibility can be assessed.

In addition, since the objective evaluation measurement and evaluation work is performed by the digitized mechanism, not subjective judgment by the clinician's promotion, the measurement value is not limited, and thus the analysis of the measurement result under various conditions can be easily performed. Can be.

The present invention is not limited to the above described and illustrated in the drawings, and of course, more modifications and variations are possible to those skilled in the art within the scope of the following claims.

1 is a perspective view showing the thigh muscle tension and flexibility evaluation device according to an embodiment of the present invention.

Figure 2 is a partially separated perspective view of the thigh hind muscle tension and flexibility evaluation device according to the present invention.

Figure 3 is an exploded perspective view and a partial enlarged view showing the pelvic sliding portion in the thigh hind muscle tension and flexibility evaluation device according to the present invention.

4 is a cross-sectional view taken along the line A-A of FIG.

5 and 6 are plan views showing the operating state of the limit switch in the thigh hind muscle tension and flexibility evaluation device according to the present invention.

7 and 8 are separated perspective views showing the scaffold member in the thigh hind muscle tension and flexibility evaluation device according to the present invention.

Figure 9 is a perspective view showing a removable member for tying the leg under the user's knee in the thigh hind muscle tension and flexibility evaluation device according to the present invention.

10 and 11 are side views showing the use state of the thigh hind muscle tension and flexibility evaluation device according to the present invention.

Description of the Related Art

100: base 110: horizontal member

120: vertical member 130: caster

140: bracket 150,210: support plate

200: pelvis sliding portion 220: rail

230: track groove 240: ball

250: slider 260: thigh seat member

300: knee angle measurement unit 310: encoder

320: rotating shaft 330: limit switch

332: roller 340: reducer

350: AC motor 400: lower body support

412: large connecting member 414: small connecting member

420: scaffold member 500: controller

Claims (19)

In the chair-shaped thigh back muscle tension and flexibility evaluation device, Footrest to put the foot; A connection member for connecting between the footrest and the thigh seat (chair butt support); A motor for rotating the connection member; An angle measuring unit measuring a degree of rotation of the connection member; Thigh hind muscle tension and flexibility evaluation device comprising a. In the chair-shaped thigh back muscle tension and flexibility evaluation device, Femoral seating part that reaches the thigh when the seat is attached to the support plate 150 of the chair back; A lower body support having a footrest for placing a leg when the sacrum is attached to the support plate 150 of a chair back and a connection member positioned between the footrest and the thigh seat; A motor for rotating the lower body support to extend in the state where the hip joint is bent at 90 degrees; Thigh hind muscle tension and flexibility evaluation device comprising a. The method of claim 2, Thigh hind muscle tension and flexibility evaluation device further comprising an angle measuring unit for measuring the degree of rotation of the lower body support. The method according to any one of claims 1 to 3, The thigh back muscle tension and flexibility evaluation device, characterized in that it comprises two pelvic sliding portion configured to slide back and forth. The method of claim 4, wherein The angle measuring part is the thigh hind muscle tension and flexibility evaluation device, characterized in that consisting of the encoder. The method of claim 4, wherein Thigh hind muscle tension and flexibility evaluation device further comprising a limit switch for detecting the sliding of the pelvis sliding portion. The method of claim 6, When the signal indicating that the pelvis sliding unit is sliding from the limit switch is input, the rear thigh muscles further comprising a control unit for receiving a value measured by the degree of rotation of the lower body support from the angle measuring unit and calculating and outputting Tension and flexibility evaluation device. A base portion in which a plurality of horizontal members and vertical members are connected to each other to form a chair frame; A pelvis sliding part installed on the base part, the pelvis of the user sliding back and forth according to the height of the thigh muscle of the user; A knee angle measurement unit connected to both sides of the upper end of the base unit and measuring a knee angle according to the user's knee extension or flexion; A lower body support part which pivots up and down in association with the rotation axis of the knee angle measuring part and supports the lower body of the user; And Controller for controlling the operation of the knee angle measuring unit Thigh hind muscle tension and flexibility evaluation device comprising a. The method of claim 8, The base portion, An apparatus for evaluating thigh back muscle tension and flexibility having a fixed structure in close contact with the floor. The method of claim 8, The base portion, Thigh back muscle tension and flexibility evaluation device movable through the caster provided at the bottom. The method of claim 8, The pelvis sliding portion, A plurality of rails provided on the horizontal member; Raceway grooves formed on both sides of the rail; A ball in cloud contact with the track groove; A slider moving along the rail via the ball; Thigh hind muscle tension and flexibility evaluation device comprising a; thigh seat member is installed on the slider user sitting. The method of claim 11, The pelvis sliding portion, Thigh hind muscle tension and flexibility evaluation device having left and right structure. The method of claim 8, The knee angle measuring unit, An alternating current (AC) motor for generating power; A rotation shaft axially coupled to the AC motor; A limit switch for detecting the slip of the pelvis according to the elongation of the thigh muscles of the user and stopping the operation of the AC motor; Thigh hind muscle tension and flexibility evaluation device comprising; an encoder for measuring the user's knee angle in conjunction with the operation stop of the AC motor. The method according to any one of claims 8 to 13, The lower body support, A large and small connecting member having a multi-stage structure connected in a direction perpendicular to the pivot shaft; An apparatus for evaluating thigh back muscle tension and flexibility including a scaffold member connected in a vertical direction from a lower end of the small connecting member. 15. The method of claim 14, The scaffold member, A pair of front and rear slits are provided along both longitudinal sides of the inner surface, and a support member supporting the user's heel on the rear slit is connected through a pair of locking / release handles, and the user's toes on the front slit. And thigh back muscle tension and flexibility evaluation device is connected to a pair of detachable members for supporting the instep. 15. The method of claim 14, The connection member, the scaffold member and the thigh portion of the base portion on which the user sits, the thigh back muscle tension and flexibility evaluation device that can be changed in length according to the user's physical condition. 15. The method of claim 14, The removable member, Apparatus for evaluating thigh back muscle tension and flexibility with hermetic means of velcro tape. The method of claim 8, Thigh hind muscle tension and flexibility evaluation device further comprising a back support means for supporting the back of the user is installed on the upper rear of the base portion. The method of claim 18, The back support means. Brackets fixed to both sides of the upper rear of the base unit; Thigh back muscle tension and flexibility evaluation device that is a support plate of a transparent material attached between the brackets.

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