JPH0322181B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is a method for orthostatic training that is used to prevent various problems that occur in long-term bedridden patients (e.g., decreased sense of standing, bedsores, flexion contracture, equinus, etc.) and to restore function. Regarding tilt tables.

With conventional tilt tables, it was possible to set the table angle while measuring the angle of the table. There was no way to automatically stop the tilting movement of the table when the table reached the tip.

Corrective training for the feet is performed by appropriately setting the load applied to the feet and the longitudinal or horizontal inclination angle of the footrest, but with conventional tilt tables, the load applied to the feet is controlled by the table. It was estimated based on the angle of inclination and was inaccurate.

SUMMARY OF THE INVENTION The present invention has been made with the object of solving the above-mentioned drawbacks and providing a load setting type tilt table that can accurately and easily apply a load to the foot.

That is, in the present invention, a horizontal shaft 4 is provided at one end of the upper surface of a tilting drive unit 5 installed upright on the underframe 1, and a telescopic actuating unit 6 is provided protruding from the center of the tilting drive unit 5, so that a human body is placed on the base. A pivot support 55 provided on the back surface of the table 2 on which the mounting portion 34 is mounted on a support member 33 is pivoted on the horizontal shaft 4, and a pivot support 56 on the back surface of the table 2 is pivotably supported on the telescopic actuating portion 6. A pressure sensor 38 is provided between the table 33 and the mounting portion 34, an upper plate 37 is placed on the lower plate 36 at one end of the table 2, and a pressure sensor 30 is provided between the lower plate 36 and the upper plate 37. The footrest 10 is erected, and the footrest 1
Signal detected by pressure sensor 30 of 0 and table 2
The table 2 is tilted by the control unit 35 which obtains a signal detected by the pressure sensor 38 or the pressure sensor 57 provided at the grounding part of the underframe 1 and a setting application signal and provides an operating signal to the tilting drive unit 5. This is a load setting type tilt table.

The control unit 35 also controls the pressure sensor 3 of the footrest 10.
The load value of the signal detected at 0 was calculated by multiplying the value of the signal indicating the weight detected from the pressure sensor 38 of the table 2 or the pressure sensor 57 provided at the ground contact part of the underframe 1 by an arbitrarily set percentage. An actuation signal is applied to the tilting drive section 5 until the load value is reached.

Further, the control section 35 applies an activation signal to the tilting drive section 5 until the value of the signal detected by the pressure sensor 30 of the footrest section 10 reaches the signal value of the set load value.

Embodiments of the present invention as described above are illustrated in the accompanying drawings, and the configuration of the illustrated embodiments will be described in detail below.

Reference numeral 1 denotes an underframe, which can be moved to any desired location using wheels 32, and can be installed at a required location using a stationary fixture 3. A pressure sensor 57 is provided.

Reference numeral 2 denotes a table, and a pivot support 55 provided at a longitudinally intermediate portion is pivotally supported by a horizontal shaft 4 to a tilting drive unit 5 erected from the underframe 1 so as to be swingable in a seesaw shape. The telescopic actuating part 6 of the tilting drive part 5 is pivotally supported on a pivot part 56 provided on the back surface of the table 2, and by the operation of the telescopic actuating part 6, the table 2 can be tilted at any angle within the range from a horizontal position to an upright position. It is configured so that the angle can be changed and it can be fixed at any changed position.

Further, the table 2 is composed of a platform 33 and a mounting section 34 that is attached to the platform 33 so as to be able to move in parallel in the vertical direction.
A pressure sensor 38 that measures the weight of the patient held on the above-mentioned section 34 is interposed between the body and the body, and the measured value can be fed back to the control section 35 that controls the operation of the tilting drive section 5. It is configured as follows.

Another embodiment of the weight measurement described above is the stationary fixture 3
A cylindrical holder 59 is attached to the lower surface of the adjuster 58 screwed onto the underframe 1, and the legs 6 are inserted into the holder 59.
0 and the upper end of the leg 60 and the adjusting body 58.
The pressure sensor 57 is held between the lower end of the adjusting body 58 and
A knob 61 is attached to the upper end of the holder.

A brace 7 for keeping the patient fixed and a handle 8 are installed on the table 33, and a foot rest support 9 is installed on the lower side end of the table 2 when it is tilted. The footrests 10, which are configured to be left and right separately and independently, are attached and installed in parallel to the footrest support 9.

The footrest 10 has a box-shaped base 11 that is open at the top.
, a footrest 12 that is attached to the base 11 and positioned so as to cover the opening of the base 11;
The main components include a left-right tilt adjustment mechanism A, a front-back tilt adjustment mechanism B, and the like housed in the vehicle 1, and more specifically, it is constructed as follows.

The box-shaped base 11 has a support shaft 13 projecting from the footrest support 9 at the center of the rear side wall in the width direction.
The sector 14 is rotatably attached to the base body 11 and fitted onto the support shaft 13 inside the base body 11, so that it can be tilted in the left and right directions about the support shaft 13.

A worm 16 that is rotated by an actuating part 15 is engaged with the sector 14, and the actuating part 15 extends forward from the actuating part 15 and has one end connected to the base body 15.
It is operated by an operating shaft 17 projected from the front, and a knob 18 is attached to the end of the operating shaft 17 projecting outside the base 11, and a dial on the front surface of the knob 18 is capable of displaying the tilt angle. A gauge 19 is installed.

In other words, by arbitrarily rotating the knob 18 with the dial gauge 19, the operating shaft 17, the actuating part 15,
A left-right tilt adjustment mechanism A is constructed by operating the sector 14 via the worm 16 to tilt the base body 11 left and right.

The footrest 12 is attached to the base 11 with a hinge 20 on the rear end side.
The footrest plate 12 is fixed to the lower plate 36 and is provided so that the front part can swing vertically.
and an upper plate 37 which is attached to the lower plate 36 so as to be movable vertically in parallel using appropriate support means 21 such as using a slide bearing.

A pivot portion 22 is installed on the lower surface of the lower plate 36, and one end of a link 23 is pivotally connected to the pivot portion 22.

The other end of the link 23 is pivotally connected to a female threaded body 24, and the female threaded body 24 is screwed onto a threaded shaft 25 so as to be movable in the axial direction of the threaded shaft 25 as the threaded shaft 25 rotates.

The screw shaft 25 is attached to the support part 2 installed on the base body 11.
6 and 27, and is provided so as to rotate while maintaining a fixed position. Screw shaft 25
The front end of the base body 11 is similar to the operating shaft 17.
A knob 29 is protruded from the front and has a dial gauge 28 for displaying a tilting angle at its protruding end.
is installed.

That is, by arbitrarily rotating the knob 29, the screw shaft 25 is rotated, and the link 23 is actuated by the movement of the female screw body 24 screwed thereto, so that the footrest plate 1 is rotated.
2 is tilted back and forth to constitute a longitudinal direction adjustment mechanism B.

In addition, the lower plate 36 and the upper plate 3 of the footrest plate 12 mentioned above.
7, there is a pressure sensor 3 which is made of, for example, a strain gauge and can measure the load applied to the foot.
0 is set. The measured value by this pressure sensor 30 is configured to be fed back to the control unit 35 of the tilting drive unit 5 in relation to the feedback signal from the pressure sensor 38 of the table 2 described above, and the control unit 35 outputs “plantar pressure”. /body weight", the table 2 is automatically tilted until the plantar pressure reaches the set value, and then stopped.

In addition, the control unit 35 is configured not only to be able to set the plantar pressure as a percentage value compared to the measured weight value, but also to arbitrarily set the plantar pressure as an absolute value. The table 2 automatically tilts and stops until the set value is reached.

The state of the sole pressure on the footrest 12 is as follows:
It is also displayed on a display section 31 linked to the control section 35, and this display section 31 is placed in a position where the patient can see it so as to increase the patient's motivation for training.

Next, the electrical configuration of the control section 35 will be described in detail.

The output of a pressure sensor 30 such as a strain gauge provided on the footrest 10 is connected to an operational amplifier 39 that converts impedance changes into voltage changes of a predetermined unit. One output of the operational amplifier 39 is connected to a foot load display 40 that displays the foot load, and the other output is connected to one input end of a comparator 41 that compares the levels of two inputs. The other input terminal of the comparator 41 is connected to an output from an absolute value load setter 42 that presets the load applied to the foot.

The output of the pressure sensor 38 provided on the table 2 or the pressure sensor 57 provided on the stationary fixture 3 is connected as a weight sensor 62 to an operational amplifier 43, and the output of the operational amplifier 43 is output when a human body is placed on the table 2 in a horizontal state. It is connected to a voltage holder 44 that holds the input level initially obtained. One output of the voltage holder 44 is connected to a weight indicator 45 for displaying body weight, and the other output of the voltage holder 44 is connected to a percentage load setter 46 which is a voltage dividing means such as a resistor. The output of the percentage load setter 46 is connected to one input of a comparator 47, and the other input of the comparator 47 is connected to the output of the operational amplifier 39.

When the table 2 is in a horizontal state, it is assumed that the load on the foot is zero, and the output of the zero-load voltage generator 48, which generates a signal indicating that the table 2 is in a horizontal state, is connected to one input of the comparator 49. , the comparator 49
The output of the operational amplifier 39 is connected to the other input.

The output of the comparator 41 is connected to one input of a mode switch 50 consisting of a changeover switch, and the output of the comparator 47 is connected to the other input of the mode switch 50. The output of the mode switch 50 is a forward rotation driver 51 that moves the telescoping operating section 6 of the tilting drive section 5 to extend.
The output of the comparator 49 is connected to the control terminal of a reversing driver 52 that causes the telescopic actuator 6 to retract.

One output of the controller 53 that controls power application is connected to the input terminal of the forward rotation driver 51, and the other output of the controller 53 is connected to the input terminal of the reverse rotation driver 52.

The output of the forward rotation driver 51 and the output of the reverse rotation driver 52 are both connected to a motor 54 that serves as a drive source for the telescopic actuator 6.

Next, the operation of the apparatus configured as described above will be explained.

When performing training, the patient is supported in a lying position on the upper surface of the platform 34 of the table 2, which is maintained in a horizontal state, and the patient's body is fixed by the brace 7.

Thus, the pressure sensor 38 of the table 2 or the pressure sensor 57 of the stationary fixture 3 is activated, and the weight value measured by the pressure sensor 38 is input to the control unit 35 and displayed. This can be known from the display in section 31.

The control unit 3 controls the control unit 3 to obtain the desired plantar pressure based on the percentage value of the body weight value that can be known in this way.
5 and then start operating the tilt drive unit 5, the table 2 supporting the patient lying down is gradually tilted from a horizontal position to an upright position. Along with this tilting, the degree of weight applied to the patient's feet increases, and the value measured by the pressure sensor 30 interposed in the footrest 12 reaches the value preset in the control unit 35. When this happens, the table 2 stops tilting, and is maintained and fixed in the state where the set foot pressure is applied.

Therefore, by determining and setting the optimal plantar pressure in advance, the state of the plantar pressure can be automatically changed to the appropriate state, making it easy to perform recovery training while applying the appropriate load to the foot. can be implemented. Note that the sole pressure may be set not based on the body weight ratio value but based on the absolute value of the load applied to the foot.

The plantar pressure and the patient's weight during the recovery training are displayed on the display unit 31 and informed to the patient, so that the patient becomes more motivated to perform the training by checking this.

Furthermore, if it is necessary to change the direction of load application to the patient's feet, especially the ankles, with a desired plantar pressure applied, that is, with the table 2 tilted, the knob 18 can be turned as desired. This causes the left-right tilt adjustment mechanism A to operate, and the footrest 12 can steplessly change the tilt angle within a predetermined range of angles in the medial and medial directions of the patient's foot. Further, by turning the knob 29, the anteroposterior inclination adjustment mechanism B is actuated, and the inclination angle of the footrest 12 can be changed steplessly within a predetermined range in the anteroposterior direction of the patient's foot. These inclination conditions are displayed by dial gauges 19 and 28 built into the respective knobs 18 and 29, so by operating the knobs 18 and 29 while checking the dial gauges 19 and 28, you can accurately determine the inclination. It can be adjusted and training guidance can be conducted properly and easily.

Moreover, no matter how the footrest plate 12 is tilted back and forth, left or right, the load received from the feet causes the upper plate 37 to move parallel to the lower plate 36, ensuring that the pressure sensor 30 operates properly without bias. Therefore, regardless of the inclination of the footrest 12, the sole pressure is accurately measured and fed back to the control unit 35.

Next, the operation of the electrical configuration of the control section 35 will be described.

When the controller 53 is operated to instruct the horizontal table 2 to move to the upright position, the voltage from the controller 53 is applied to the motor 54 via the forward rotation driver 51.
, the motor 54 rotates forward and the telescopic actuator 6
is activated, and the table 2 moves to the upright position.

Note that the forward rotation of the motor 54 causes the telescopic actuator 6 to
is operated to extend, and the telescopic operating section 6 is operated to contract due to the reverse rotation of the motor 54.

When the mode switch 50 is set to the percentage load setting side, the pressure sensor 30 of the footrest 10 detects the load applied to the human foot, and the detected value and the pressure sensor 38 of the table 2 or the fixed fixture 3 are used to detect the load applied to the human foot. A comparator 47 compares the body weight with a value obtained by multiplying the detected value by a predetermined rate. When the value from the operational amplifier 39 reaches the value from the percentage load setter 46, a predetermined signal is output from the comparator 47, which causes the forward rotation driver 51 to be cut off, the motor 54 to stop, and the table 2
The table 2 is fixed at the stopped position.

When the controller is operated to instruct the table to shift from the horizontal state to the upright state and the mode switch 50 is turned on to the absolute value load setting side, the value from the operational amplifier 39 and the value from the absolute value load setter 42 are A comparator 41 performs a comparison. When the value from the operational amplifier 39 reaches the value from the absolute value load setter 42, a predetermined signal is output from the comparator 41, and as described above, a predetermined signal is outputted from the table 2.
The table 2 is fixed at the stopped position.

When the controller 53 is operated to instruct the table 2, which is in an upright or tilted state, to shift to a horizontal state, the voltage from the controller 53 is applied to the reversing driver 5.
2 to the motor 54.
is reversed, the telescopic actuator 6 is retracted, and the table 2 is moved to a prone state.

When the value from the operational amplifier 39 drops to the value from the zero-load voltage generator 48, a predetermined signal is output from the comparator 49, the reversing driver 52 is cut off, the motor 54 is stopped, and the prone movement of the table 2 is stopped. 2 is fixed in a horizontal state.

The foot load display 40 of the display unit 31 digitally displays the load applied to the foot, and the weight display 45 displays the weight of the patient placed on the table 2 when the table 2 is in a horizontal state until the end of the training. be done.

The effects of this device having the above configuration and operation will be described below.

The signal from the pressure sensor on the foot rest and the signal from the pressure sensor on the table or the pressure sensor provided on the fixed fixture are sent to the control unit, and the signal from the pressure sensor on the foot rest sets the plantar pressure load. Since the table is configured to operate and stand up until the table reaches the height of 100 degrees, load can be easily and accurately applied to the feet, greatly enhancing the effect of correcting standing up, and further increasing the work efficiency of standing up training treatment. I was able to do that.

In addition, the device for setting the load applied to the foot is equipped with a device that sets the load to a value multiplied by a percentage of the body weight and a device that sets it as an absolute value, and the functions of both devices can be selected using a mode switch. Since it is configured so that it can be selected, the above-mentioned load can be set at will according to the individual's training movements, which is very advantageous in use and allows for effective standing training treatment.

Further, by operating the left-right tilt adjustment mechanism and the front-rear tilt adjustment mechanism, the footrest can be adjusted steplessly left and right and front and back within a predetermined range of angles. In addition, the tilt adjustment can be easily performed even under the load caused by the patient's feet, so it is possible to change the slope to a gentler one that causes pain to the patient during training, or to increase the slope to strengthen the training. It can be easily used and used conveniently.

In addition, the forward, backward, left, and right inclination of the footrest is always accurately displayed on the dial gauge as you operate it, so you can easily and accurately set the inclination angle of the footrest while checking this. The anti-slope training status can also be accurately grasped.

Furthermore, even though the footrest tilts back and forth and left and right, the upper plate always moves parallel to the lower plate to activate the pressure sensor, so even if the patient's weight is unevenly applied to the footrest, it will not be affected. The load status is accurately measured,
This has the advantage of being able to set the plantar pressure state without error, increasing the training effect.

[Brief explanation of the drawing]

Fig. 1 is an overall perspective view of the tilt table according to the present invention, Fig. 2 is an enlarged perspective view of a part thereof, and Fig. 3 is an enlarged view of one of the footrests in Fig. 2. A partially sectional plan view, Fig. 4 is a sectional side view thereof, Fig. 5 is a sectional front view of the one in Fig. 3, and Fig. 6
7 shows a sectional side view of the table, FIG. 7 shows a block diagram of the electric circuit, and FIG. 8 shows a sectional view of the stationary fixture. DESCRIPTION OF SYMBOLS 1...Underframe, 2...Table, 4...Horizontal axis, 5...Tilt drive part, 6...Extension/contraction operation part, 10...Footrest part, 30...
Pressure sensor, 33... Base part, 34... Mounting part, 35... Control part, 36... Lower plate, 37... Upper plate, 38... Pressure sensor, 55... Axial support, 56... Pivotal support, 57... Pressure sensor.

Claims (1)

[Scope of Claims] 1. A horizontal shaft 4 is provided at one end of the upper surface of the tilting drive unit 5 installed upright on the underframe 1, and a telescopic actuating unit 6 is provided protruding from the center of the tilting drive unit 5, on which a human body is placed. A pivot support 55 provided on the back side of the table 2, which has the rest 34 mounted on the table 33, is pivoted on the horizontal shaft 4, and a pivot support 56 on the back side of the table 2 is pivoted on the telescopic actuator 6. A pressure sensor 38 is provided between the platform 33 and the platform 34,
At one end of the table 2, a footrest 10 is provided, in which an upper plate 37 is placed on a lower plate 36 and a pressure sensor 30 is provided between the lower plate 36 and the upper plate 37. 30, a signal detected by the pressure sensor 38 of the table 2 or the pressure sensor 57 provided on the grounding part of the underframe 1, and a setting application signal, and a control unit 35 that provides an activation signal to the tilting drive unit 5. A load setting type tilt table configured so that the table 2 is tilted by a signal from. 2 The control unit 35 changes the load value of the signal detected by the pressure sensor 30 of the footrest 10 to the value of the signal indicating the weight detected by the pressure sensor 38 of the table 2 or the pressure sensor 57 provided at the ground contact part of the underframe 1. 2. The load setting type tilt table according to claim 1, wherein the actuation signal is applied to the tilt drive unit 5 until the load value calculated by multiplying the value by an arbitrarily set percentage is applied. 3. Claims characterized in that the control unit 35 applies an activation signal to the tilting drive unit 5 until the value of the signal detected by the pressure sensor 30 of the footrest 10 reaches the signal value of the set load value. The load setting type tilt table described in item 1.