JPH0246321Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a portable human body pressure measuring device for measuring muscle strength, pressure pain load, and skin hardness.

Prior Art As a prior art, there is Japanese Patent Application Laid-Open No. 58-120141. The technology disclosed in this publication includes a force-responsive actuator means that extends to the outside of a housing that can be held with one hand, and a force-responsive actuator means that is connected to the actuator means and is housed within the housing, and that electrically transmits the force applied to the actuator means. a means of measuring
The manual muscle strength testing device includes an indicator connected to the measuring means and housed in the housing, and displaying the force measured by the measuring means.

Problems to be solved by the invention In JP-A-58-120141 presented as a conventional technique, the actuator is fixed to a cantilever beam.
The actuator cannot be easily replaced. Therefore, the utility of this device was low since it was used only for testing muscle strength.

In addition, since the actuator distorts the cantilever beam while fixed to the free end of the cantilever beam, the forces applied to the actuator are the force applied in the axial direction of the stem and the force applied in a direction different from the axial direction of the stem. The resultant force is applied to the cantilever beam. A force applied in a direction different from the axial direction of the stem is included as an error in the displayed measurement value, resulting in a disadvantage that the accuracy of the manual muscle strength test device is reduced.

In addition, since the case is rectangular, the examiner has to hold the case again depending on the position where it contacts the patient, and it may be difficult to hold the case.

In addition, since the actuator is fixed to the cantilever beam, the direction of the pressing force applied to the actuator changes with the fan-shaped curvature of the cantilever beam, resulting in a decrease in accuracy in measurement.

Means for Solving the Problems The present invention solves the above problems, and is an easy-to-use and highly accurate portable pressure measuring device for the human body that can not only measure muscle strength but also measure pressure pain loads and skin hardness. is intended to provide.

That is, in the present invention, the grip 1 and the housing 17 are connected to the code 8.
A frame part 2 having a built-in pressure sensor part 34 is housed and fixed inside the grip 1 of the muscle strength measuring instrument connected to the grip 1. Conductive rod 3 that conducts pressing force
is provided in the frame 2, and a contact piece 35 that comes into contact with the measurement site of the human body is detachably attached to the tip of the conduction rod 3,
The housing 17 houses an electric circuit unit 23 that electrically processes the signal from the pressure sensor unit 34, and the housing 1
This is a portable human body pressure measuring device which is provided with a display 18 on the front side of the device 7 for displaying the output signal of the electric circuit section 23.

Moreover, the grip 1 is formed into a spherical shape.

In addition, the frame part 2 has a presser tube 11 screwed onto the upper end of the base tube 10, and a conductive rod 3, which is longer than the presser tube 11, is in contact with the presser tube 11 so that it can rotate and slide freely. It is inserted.

Further, the pressure sensor section 34 has a stepped portion 36 formed at the innermost part of the screw hole portion 12 formed at the upper end of the base tube 10, and is fixed to the step portion 36 at right angles to the axial direction of the base tube 10. The strain gauge 15 is made up of a strain plate 13 that is shaped like a strain plate 13, and a strain gauge 15 that is attached to a substantially central portion of the back surface of the strain plate 13.

Further, the pressure sensor section 34 is arranged between a rack body 37 that is slidably inserted into the upper end of the base cylinder 10, and a rack body 37 that has elasticity in the direction of the conduction rod 3 and the bottom surface 38 of the base cylinder 10. A spring 39 that is fitted and supports the rack body 37, and a rack portion 40 of the rack body 37.
and a variable resistor 42 to which a shaft 41 is engaged.

The pressure sensor section 34 also includes a base cylinder 10 that stores liquid therein, a piston 43 that is slidably inserted into the upper end of the base cylinder 10 while maintaining airtightness, and a piston 43 that is slidably inserted into the upper end of the base cylinder 10.
The oil pressure sensor 44 is attached to the side of the base cylinder 10 in communication with the inside of the base cylinder 10.

Further, the base end of the conduction rod 3 is formed into a hemispherical shape, and a ball plunger 48 is provided on the insertion convex portion 4 at the tip of the conduction rod 3, and the abutment piece 35 fitted into the insertion convex portion 4 is inserted. A groove 49 into which a ball plunger 48 is engaged is cut at an appropriate location inside the recess 6.

Further, the contact pieces 35 include the contact piece 5 for measuring muscle strength, the contact piece 29 for measuring tender load, and the contact piece 3 for measuring skin hardness.
0 and the type of contact piece 31 for measuring the muscle strength of the big toe,
These contact pieces 35 are each detachably attached to the conduction rod 3.

Example The structure of the present invention will be explained in detail based on the attached drawings.

A conduction rod 3 is protruded from a suitable position of the grip 1 shown in FIG.
In the center of the back of each contact piece 35 such as the contact piece 5 for muscle strength measurement, there is a groove 4 in which a ball plunger 48 is locked at an appropriate location inside.
It has an insertion recess 6 with a cutout 9, and the insertion recess 6 can be attached to and removed from the insertion protrusion 4 with a single touch. Further, a receptacle 7 is provided at an appropriate position on the grip 1, and a plug 9 to which a cord 8 is connected is connected to the receptacle 7. One end 2a of the frame 2 is exposed to the outside of the grip 1, and the other end 2b of the frame 2 is fixed inside the grip 1 with a screw 47. The frame portion 2 is formed by screwing a presser tube 11 onto the upper end of a rigid cylindrical base tube 10.

The first pressure sensor section 34 inside the frame section 2
The embodiment consists of a strain plate 13 and a strain gauge 15.

That is, the strain plate 13 is inserted into the stepped portion 36 formed at the innermost part of the screw hole 12 formed at the upper end of the base cylinder 10 in a plane perpendicular to the axial direction of the base cylinder 10.
A substantially central portion of the surface of the strain plate 13 contacts the conduction rod 3 slidably held by the presser cylinder 11, and the strain plate 1
The peripheral portion of the front surface of the strain plate 13 is pressed by a spacer 14 that is pressed by the presser cylinder 11, and a strain gauge 15 is attached to the substantially central portion of the back surface of the strain plate 13.

An electric wire 16 taken out from the strain gauge 15 is connected to the receptacle 7.

A strain gauge 15 is provided on the top surface of the housing 17 shown in FIG.
A display 18 on which the signals from the display 18 are appropriately processed and digitally displayed, a zero adjustment knob 19 for adjusting the display on the display 18 to zero at the start of use, and a power switch 20 are provided. A socket 22 into which a plug 21 attached to the other end of the cord 8 is inserted is arranged at an appropriate position on the side surface of the housing 17.

Further, inside the casing 17, an electric circuit section 23 for electrically processing changes in the resistance value obtained from the strain gauge 15 and a battery (not shown) are provided. However, it is also possible to use a commercial power source as the power source.

The electric circuit section 23 shown in FIG.
The device circuit has an amplifier 24 that converts the resistance change obtained from the output into an electric signal and amplifies the electric signal, and a volume (not shown) connected to the amplifier 24 and equipped with a zero adjustment knob 19. It has a zero adjuster 25 which sets the output signal of the amplifier 24 to zero when no pressing force is applied to the abutment piece 5 for dovetail muscle strength measurement. Furthermore, a peak value holder 26 is connected to the amplifier 24 and holds the peak value of the output of the amplifier 24, and a peak value holder 26 is connected to the amplifier 24 and holds the peak value of the output of the amplifier 24. 5 seconds), and a reset timer 27 which applies a signal to the peak value holder 26 to return the peak value of the peak value holder 26 to zero after this predetermined time. Furthermore, an AD converter 28 is connected to the peak value holder 26 and converts the analog signal obtained from the peak value holder 26 into a digital signal, and a display device is connected to the AD converter 28 and displays the output of the AD converter 28 digitally. 18.

4 to 6 show various contact pieces that can be freely attached to and removed from the insertion convex portion at the tip of the conduction rod 3, and FIG. 4 shows the contact piece 29 for measuring pressure pain load, and FIG. This is a contact piece 30 for measuring skin hardness, and has a flange 33 in the middle of a cylinder with a spherical tip. FIG. 6 shows an abutment piece 31 for measuring muscle strength of the big toe of the foot.

Reference numeral 32 in FIG. 1 is a string to be held when carrying the grip 1, reference numeral 45 is a printer that prints and displays the measured values of muscle strength, and reference numeral 46 is a printer output terminal to which the printer 45 is connected.

In a second embodiment of the present invention shown in FIG. 8, a pressure sensor section 34 is constructed of a rack body 37, a spring 39, and a variable resistor 42. That is, the rack body 37 is a substantially U-shaped member with a rack portion 40 provided inside, and is slidably inserted into one end of the base cylinder 10, and the spring 39 has elasticity in the direction of the conduction rod 3, and the rack body 37 and the bottom surface 38 of the base cylinder 10 to support the rack body 37, and the variable resistor 42
is attached to the side wall of the base cylinder 10, and a shaft 41 of a variable resistor 42 is engaged with a rack portion 40 of the rack body 37.

When the rack body 37 is pushed by the conduction rod 3 and moves toward the bottom surface 38 of the base cylinder 10, the shaft 41 engaged with the rack part 40 rotates, and the resistance value of the variable resistor 42 is varied. This resistance change is transmitted to the amplifier 24 through the wire 16.

In a third embodiment of the present invention shown in FIG. 9, a pressure sensor section 34 is composed of a cylinder 10, a piston 43, and an oil pressure sensor 44. That is, oil is stored inside the base cylinder 10, the piston 43 is slidably inserted into the upper end of the base cylinder 10 while maintaining airtightness, and the oil pressure sensor 44 is attached to the side of the base cylinder 10.
It is attached in communication with the inside of the. When the piston 43 is moved by the transmission rod 3 and compresses oil, the oil pressure sensor 44 detects the oil pressure. This detection signal is transmitted to the electric circuit section 23 through the electric wire.

Function: The person taking the measurement (hereinafter referred to as the tester) grasps the grip 1, selects the contact piece 35 suitable for the purpose of measurement from the four types of contact pieces 35, and presses the patient to be measured (hereinafter referred to as the patient). Contact the measurement site. When the abutment piece 35 is used as the abutment piece 5 for muscle force measurement, the pressing force applied to the abutment piece 5 for muscle force measurement is transmitted to the conduction rod 3 and the strain plate 1
3.

Among the pressing forces applied to the conduction rod 3, forces other than those in the axial direction are absorbed by the holding cylinder, and only the pressing force in the axial direction reaches the strain plate 13. Furthermore, even if the measuring part rotates or swings from side to side and comes into contact with the contact piece 35, the rotation or the side-to-side swing is absorbed by the contact piece 35 rotating around the axis of the conduction rod 3. be done. Deformable plate 1 that deforms into a bowl shape due to pressing force
The strain gauge 15 attached to 3 deforms as the strain plate 13 deforms. When the strain gauge 15 is deformed, the specific resistance value of the strain gauge element changes, and the signal of the resistance change propagates through the cord 8 and reaches the electric circuit section 23.

To describe the function of the electric circuit section 23, first, the amplifier 24 converts a signal of a change in the resistance value of the strain gauge 15 into a signal of a voltage change, and amplifies this voltage change signal.
The zero regulator 25 applies a bias to the amplifier 24 and adjusts the input voltage level so that the output of the amplifier 24 becomes zero when there is no pressing force on the conductive rod 3 and the device is in the reset state. A peak value holder 26 stores the highest value of the signal obtained from the amplifier 24. When the level of the signal from the amplifier 24 falls below a predetermined level, the reset timer 27 starts operating and measures a predetermined time, and when the predetermined time elapses, the timer switch is activated and the value stored in the peak value holder 26 is reset. Reset.

An AD converter 28 converts the analog signal obtained from the peak value holder 26 into a digital signal.

The display 18 digitally displays the signal output from the AD converter 28 by emitting light. When measuring muscle strength, the examiner brings the muscle strength measuring contact piece 5 into contact with a predetermined position of the measurement part such as the patient's limb. When measuring the muscle strength of the big toe of the foot, attach the abutment piece 31 for measuring the muscle strength of the big toe to the tip of the conduction rod 3, and place the abutment piece 31 for measuring the muscle force of the big toe on the designated part of the instep of the patient's big toe. Do this by touching the position.

When measuring the tender load on the skin, attach the contact piece 29 for measuring pressure pain load to the tip of the conduction rod 3, touch the contact piece 29 for measuring pressure pain load to the measurement site of the patient's skin, and the examiner grips 1. and gently press it against the skin until the patient complains of pain. When the patient complains of pain, the examiner immediately stops pressing and reads the number displayed on the display 18. The number displayed on the display 18 at that time is the pressure pain load value. When using this device as a method of measuring skin hardness, a contact piece 30 for measuring skin hardness is attached to the tip of the conductive rod 3,
Touch the contact piece 30 for skin hardness measurement to the measurement site of the patient's skin, grasp the grip 1, and press the contact piece 30 against the patient's skin until the skin around the measurement site contacts the collar 33 of the contact piece 30 for skin hardness measurement. Slowly push grip 1 in the vertical direction. When the patient's skin comes into contact with the collar 33, the examiner immediately stops pressing the grip 1 and turns on the display 18.
Read the number displayed. Display 1 at that time
The number displayed at 8 is the skin hardness value.

A printer 45 is used to display the measured value of muscle strength in print.

Effects of the invention The structure allows the insertion recesses of various abutment pieces to be attached and detached with one touch at will to the insertion convexity at the tip of the conduction rod protruding from the frame stored in the grip, so the abutment pieces can be attached or removed depending on the purpose. By selecting and easily attaching and detaching, the device of the present invention can be used for multiple purposes, increasing the utility value of the device. That is, a single portable muscle strength measuring device can easily measure the muscle strength of the upper and lower limbs, neck, trunk, and feet related to raising the big toe, the pressure pain load, and the skin hardness.

In addition, since the grip was formed into a spherical shape, it was easier to hold the grip, making the above-mentioned measurement work easier.

In addition, since the grip and the housing are constructed separately and each is portable, the examiner can carry the device freely and use it easily by going to the patient's fixed position, which eliminates the difficulty of moving the device by one's own power. It can be used by patients who cannot freely change their body position, and by placing the display so that it is easy to see, both the patient and the experimenter can use the device easily, greatly increasing the value of its use.

In addition, the conduction rod is inserted into the presser cylinder so that it can freely slide and rotate and is held, and the base end of the conduction rod is formed into a hemispherical shape and is configured to make point contact with the pressure sensor part. Among the multilateral pressing forces applied to the contact piece, the force in the axial direction of the conduction rod is transmitted to the pressure sensor part,
Forces other than those in the axial direction of the conduction rod are absorbed by the holding tube, making accurate measurement possible. Furthermore, since a force is always applied to the pressure sensor section in a fixed direction without twisting the pressure sensor section, there is an advantage that failures of the pressure sensor section are reduced.

Furthermore, since the contact piece rotates around the axis of the conduction rod, when measuring muscle strength, the patient's measurement site not only rotates on one plane around a fulcrum such as a joint, but also rotates in response to the rotation. In addition, even if there are three-dimensional rotations such as turning or rocking, these three-dimensional rotations of the measurement area are absorbed by the rotation of the contact piece, allowing the examiner to hold the grip stably and measure the patient. This allows it to come into contact with the body part, making it very convenient to use.

[Brief explanation of drawings]

The attached drawings show an embodiment of the device according to the present invention, in which Fig. 1 is a sectional view of the grip portion, Fig. 2 is a perspective view of the housing portion, and Fig. 3 is a block diagram of the electric circuit portion.
Figure 4 is a perspective view of the abutment piece for measuring pressure pain load, Figure 5 is a perspective view of the abutment piece for measuring skin hardness, Figure 6 is a perspective view of the abutment tool for measuring the muscle strength of the big toe, and Figure 7 is A perspective view of the grip, FIG. 8 is a diagram showing a second embodiment of the pressure sensor section, FIG. 9 is a diagram showing a third embodiment of the pressure sensor section, and FIG. FIG. 11 is a partial cross-sectional view showing the recessed portion, and is a diagram showing the printer. 1...Grip, 2...Frame, 3...Conduction rod, 4...
...Insertion convex portion, 5...Abutment piece for muscle strength measurement, 6...Insertion recess, 8...Cord, 10...Body tube, 11...
Presser cylinder, 12...Screw hole part, 13...Drain plate, 1
5... Strain gauge, 17... Housing, 18... Display device, 23... Electric circuit section, 26... Peak value holder, 29... Contact piece for pressure pain load measurement, 30... Skin hardness measurement 31...Abutment piece for measuring the muscle strength of the big toe, 34...Pressure sensor section, 35...Abutment piece,
36...Step part, 37...Rack body, 38...Bottom surface, 39...Spring, 40...Rack part, 4
1... Shaft, 42... Variable resistor, 43... Piston, 44... Oil pressure sensor, 48... Ball plunger, 49... Groove.

Claims (1)

[Claims for Utility Model Registration] (1) A pressure measuring device consisting of a grip 1 and a casing 17 connected by a cord 8, in which a frame 2 containing a built-in pressure sensor section 34 is housed and fixed inside the grip 1. A conduction rod 3 is provided in the frame 2, and the base end contacts the pressure sensor part 34 and the tip protrudes outside the grip 1 to transmit the pressing force. The contact piece 35 is detachably attached,
The housing 17 houses an electric circuit unit 23 that electrically processes the signal from the pressure sensor unit 34, and the front side of the housing 17 includes a display that digitally displays the output signal of the electric circuit unit 23 by emitting light. 18, and a peak value holder 26 for holding the peak value of the signal sensed by the pressure sensor section 34 is provided in the electric circuit section 23. (2) The portable human body pressure measuring device according to claim 1, wherein the grip 1 is formed into a spherical shape. (3) The frame portion 2 has a presser tube 11 screwed onto the upper end of the base tube 10, and the presser tube 1 is placed inside the cylinder of the presser tube 11.
1. The portable human body pressure measuring device according to claim 1, wherein a conduction rod 3 having a longer length than the first conductive rod 3 is rotatably and slidably inserted into contact with the conductive rod 3. (4) The pressure sensor part 34 has a stepped part 36 formed at the innermost part of the screw hole part 12 formed at the upper end of the main cylinder 10, and a step part 36 is formed in the stepped part 36 at right angles to the axial direction of the main cylinder 10. The strain plate 13 to be fixed, and the strain plate 13
Strain gauge 15 adhered to approximately the center of the back side of
A portable human body pressure measuring device according to claim 1, characterized in that: (5) The pressure sensor section 34 includes a rack body 37 that is slidably inserted into the upper end of the base cylinder 10, and a conduction rod 3.
a spring 39 which has elasticity in the direction and is fitted between the rack body 37 and the bottom surface 38 of the base cylinder 10 and supports the rack body 37; and a variable resistor 42 whose shaft 41 is engaged with the rack portion 40 of the rack body 37. A portable human body pressure measuring device according to claim 1, characterized in that: (6) The base end of the conduction rod 3 is formed into a hemispherical shape, and the insertion convex portion 4 at the tip of the conduction rod 3 has a ball plunger 4.
8 is provided, and a groove 49 into which a ball plunger 48 is engaged is cut at an appropriate location inside the insertion recess 6 of the contact piece 35 that is fitted into the insertion convex portion 4. A portable human body pressure measuring device according to claim 1 of the utility model registration claim. (7) The contact pieces 35 include the contact piece 5 for measuring muscle strength, the contact piece 29 for measuring pressure and pain load, and the contact piece 30 for measuring skin hardness.
and the type of contact piece 31 for measuring the muscle strength of the big toe,
The portable human body pressure measuring device according to claim 1, wherein each of these contact pieces 35 is detachably attached to the conductive rod 3.