JPH0256096B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a spasticity measuring device incorporating a force transducer and a velocity or acceleration transducer.

[Conventional technology]

A spasticity measurement method is known in which the degree of spastic rigidity (hereinafter referred to as spasticity) of a subject is measured by forcibly moving the subject's limb to be measured and measuring the resistance force generated at that time. In the conventional method of measuring spasticity, the examiner places his/her hand on the test subject's upper or lower limb, rotates it around the joint, and subjectively measures the rotational resistance received from the test subject's limb. Since the degree of spasticity is determined by judgment, the rotation speed of the limb to be measured varies, resulting in inconveniences such as only subjective data being obtained.

On the other hand, in order to improve the objectivity of spasticity measurement,
A spasticity measuring device 1 shown in FIG. 9 has been proposed.
A conventional spasticity measuring device 1 shown in the figure includes a rotating arm 4 connected to a torque shaft 3 of a dynamometer 2.
The measuring limbs are connected in parallel through an attachment 6 with a strain sensor 5, and the rotating arm 4 is forcibly rotated at a constant speed by mechanical force, and the measuring limb detected by the strain sensor 5 at that time is spasticity was measured based on rotational resistance.

[Problem that the invention seeks to solve]

In general, spasticity is closely related to the psychological state of the subject, so it is known that simply having the subject sit or lie down in a certain place can have a subtle effect on spasticity measurements, and equipment, equipment, etc. When performing measurements with subjects touching their bodies, it is necessary to devise ways to eliminate psychological effects on the subject as much as possible. However, the conventional spasticity measuring device 1 described above is large and easily enters the field of view of the subject, so it tends to arouse anxiety in the subject, making it difficult to obtain accurate data. Ta. In addition, the above conventional spasticity measurement device 1
Because the device is large, it is usually fixed in a fixed location, but in the case of a bedridden patient, it is necessary to move the patient to the measurement location, either on a bed or on a stretcher. There were some problems, such as it being difficult.

[Means for solving problems]

This invention solves the above problems, and includes an attachment screwed onto a piston rod, a linear slide bearing that supports the piston rod, a piston fixed to the piston rod, and a cylinder in which the piston is fitted. and a sensor consisting of a pressure detector and a speed detector connected to the oil chamber in the cylinder, and having a fixing band and having a size that fits in the palm of the examiner's hand;
It is provided with an instruction means that is provided separately from this sensor and instructs the output of the sensor, and the force applied by the subject through the attachment is transmitted to the pressure detector and the speed detector through the oil chamber. The gist of the present invention is to measure the measured value and display the measured value using the above-mentioned indicating means.

[Effect]

In this invention, a sensor is attached to the examinee's palm, and when the examinee's palm is applied to the testee's limb to be measured and the examinee performs opposing movements, the force and speed are detected, and the Accurately measure the spasticity of the test subject's limb through velocity pattern movements.

〔Example〕

Embodiments of the present invention will be described below with reference to FIGS. 1 to 8. Figures 1 to 3
The figures are a schematic configuration diagram, a perspective view of essential parts, and a longitudinal sectional view, respectively, showing an embodiment of the spasticity measuring device of the present invention.

In FIGS. 1 to 3, the spasticity measuring device 11 is
The attachment 12, which can be changed depending on the shape of the measurement site, is screwed onto the piston rod 13, and the linear slide bearing 14 and piston 15 that support the piston rod 13 are fitted into a cylinder 16 that can fit in the palm of the hand. Furthermore, the force and speed sensor 18 is configured by connecting a pressure detector 18a for verifying the oil pressure to the oil pressure 17 in the cylinder 16, and embedding a speed detector 18b for detecting the speed of the cylinder 16 itself in the cylinder wall. ing. This force and speed sensor 18 is used by applying the attachment 12 to the measurement site of the test subject's limb and aligning the end surface opposite to the attachment 12 with the palm of the test subject. The output of the speed detector 18b is supplied to the indicator recorder 20 via the amplifier device 19. 21 is a band for fixing the force and speed sensor 18 to the palm.

When measuring the spasticity of a test subject's forearm, a band 21 is passed through the force and velocity sensor 18 and wrapped around the test subject's palm, as shown in FIG. and,
The attachment 12 is brought into contact with the wrist of a subject who is lying on his back with his upper arm fixed.

When preparations for measurement are completed in this way, the test subject is made to relax as much as possible, and the tester rotates the test subject's forearm while watching the speed indication value of the instruction recorder 20 so that the rotation speed of the test subject's forearm follows the desired speed pattern. At this time, if the subject has spasticity,
A resistance force is generated in the opposite direction to the rotation direction and is detected by the force detector 18a.

By repeating this rotational movement of the forearm several times, data regarding the subject's spasticity is recorded on the instruction recorder 20. In this case, the subject has
By keeping the amplifier device 19 and the indicator recorder 20 out of sight, the psychological tension of the subject is alleviated and true data regarding spasticity can be obtained. Also,
It is the experimenter's hand that gives the subject rotation, and if there is an abnormality in the subject, the measurement work can be stopped immediately, so it is much safer than pure mechanical measurement, and the experimenter can use his/her own hands. Spasticity can be ascertained through the sensations received from the patient, and a comprehensive evaluation can be made by comparing it with the data indicated by the instruction recorder 20. Furthermore, in this invention,
Since the linear slide bearing 14 using balls is used as the bearing that supports the piston rod 13, it has low friction, and even if an eccentric force is applied to the axis of the attachment 12, there will be no error in the measured value. Since there is no occurrence of lateral component forces that would cause turbulence, highly accurate measurements are possible.

In the above embodiment, as shown in FIG. By supplying the information to the indicator recorder 20, it is also possible to read the correlation between the degree of spasticity and the joint angle.

In this way, the spasticity measuring device 11 detects force and speed when the test subject performs opposing movements by attaching the force and speed sensor 18 to the test subject's palm and applying the attachment 12 to the measurement limb of the test subject. However, since the structure was designed to measure the spasticity of the subject's limb to be measured through movement according to a predetermined speed pattern based on the examiner's will, a large-scale device was required to rotate the limb to be measured by mechanical force. Even without this type of device, quantitative spasticity measurement without relying on empirical intuition is possible through the examiner's eyes and sensor output.

In addition, the spasticity measuring device 11 can faithfully reproduce true spasticity observed in daily general movements without imposing unnecessary psychological tension on the subject, and can obtain accurate data. All of the data can be corroborated through the sensations experienced by the experimenter, which can be of great help to doctors in their diagnosis and treatment.

Further, in the above embodiment, the force and speed sensor is not limited to a hydraulic type that uses oil pressure for pressure transmission; for example, a diaphragm 25 is used in place of the piston 15, as in the force and speed sensor 24 shown in FIG. The pressure detector 18a may be configured to detect the displacement of the diaphragm 25, which expands and contracts due to the subject's spasticity. Furthermore, the force applied to the attachment 12 may be detected by a strain type or piezoelectric effect type load detector 28, such as a force and speed sensor 27 shown in FIG.

Further, the force and speed sensors 18, 24, 27
Alternatively, as shown in FIGS. 7 and 8, holders 29 and 30 may be assembled, and the examiner may hold the holders 29 and 30 and apply the attachment 12 to the measurement site.

The spasticity measurement device 11 can be used as a muscle strength measurement device that measures the muscle strength of a subject by moving the measurement limb of the subject's own will and measuring the resistance when the tester tries to stop it. is also available.

〔Effect of the invention〕

As explained above, according to the present invention, a sensor is attached to the palm of the examiner's hand, and force and velocity or acceleration are detected when the examinee's palm is placed on the measuring limb of the examinee and performs opposing movements. However, since the structure was designed to measure the spasticity of the subject's limb to be measured through movement according to a predetermined speed pattern based on the examiner's will, a large-scale device was required to rotate the limb to be measured by mechanical force. Even without this type of device, it is possible to quantitatively measure spasticity through the examiner's eyes and sensor output without relying on empirical intuition, and it also does not impose unnecessary psychological tension on the subject. It is possible to obtain accurate data by faithfully reproducing the true spasticity seen in everyday general movements without causing any discomfort, and all data can be corroborated through the sensations experienced by the examiner's hands. , it has excellent effects such as being of great help to doctors in medical treatment and treatment.

[Brief explanation of drawings]

1 to 3 are a schematic configuration diagram, a perspective view and a vertical sectional view of essential parts, respectively, showing an embodiment of the spasticity measuring device of the present invention, and FIG. 4 is a modification of the spasticity measuring device of the present invention. Schematic configuration diagram showing an example, 5th and 6th
7 and 8 are a vertical sectional view and a schematic perspective view showing other embodiments of the sensor shown in FIG. 3, respectively, and FIG. 9 is a schematic perspective view showing an example of a conventional spasticity measuring device. be. 11... Spasticity measuring device, 18, 24, 27...
Force and speed sensor, 18a...pressure detector, 18
b...Speed detector, 20...Indication recorder.

Claims (1)

[Claims] 1. An attachment screwed onto the piston rod, a linear slide bearing that supports the piston rod, a piston fixed to the piston rod, a cylinder in which the piston is fitted, and a pressure connected to the oil chamber in the cylinder. A sensor consisting of a detector and a speed detector, and having a fixed band and having a size that fits in the palm of the examiner's hand;
It is provided with an instruction means that is provided separately from this sensor and instructs the output of the sensor, and the force applied by the subject through the attachment is transmitted to the pressure detector and the speed detector through the oil chamber. What is claimed is: 1. A spasticity measuring device, characterized in that the spasticity measuring device measures the spasticity and displays the measured value by the above-mentioned indicating means.