KR102585394B1 - Equipment measuring Pain induced by Quasi­static contactless - Google Patents

Abstract

The present invention relates to a pain threshold measurement device and method for measuring pain threshold caused by quasi-static contact. More specifically, the pain threshold measurement device includes a main body, a moving stage installed to move and set the main body, and the main body. A pain measuring device having a collision unit provided on the front side, the end surface of which contacts the subject's measurement site, and a forward operation unit configured to move the collision unit forward to pressurize the subject's measurement site; A supporter installed at a position opposite the impactor unit and seated on the subject's measurement area; and an input unit that inputs an input signal when it is determined that the subject is at the pain threshold.

Description

Apparatus and method for measuring pain threshold induced by quasistatic contact {Equipment measuring Pain induced by Quasistatic contactless}

The present invention relates to a device and method for measuring pain thresholds induced by quasi-static contact.

A device for measuring pressure pain (hereinafter referred to as 'pressure pain') that measures the pain felt by a subject when pressure is applied to the subject's measurement area is generally referred to as a pressure sensor or pressure pain device. For pain treatment, it is necessary to measure the subject's pain level objectively and quantitatively. Furthermore, information is needed on exactly where pain occurs.

Pain, which collectively refers to all unpleasant experiences of sensation and emotion caused by damage to body tissue, is a disease that almost all people can experience at least once in their lives, and is a disease that causes great inconvenience in leading daily lives.

Meanwhile, in Korea, 54% of the adult female population and 45% of the adult male population without pain symptoms were reported to have potential pain trigger points in the neuromuscular and various body parts. Pain is a symptom that occurs when pain trigger points are activated due to sudden work, overwork, fatigue, direct trauma, chills, etc., and the sensitivity to stimulation of activated pain trigger points has the characteristic of changing variously every hour. These pain trigger points act as a cause of pain in the musculoskeletal system, and are mainly expressed in the neck and shoulder area, spine, and piriformis muscle of the hip area, and 55% of patients presenting with chronic neck pain and headache symptoms are patients with myofascial pain syndrome. It has been reported.

Pain is largely divided into acute pain, chronic pain, malignant pain, cancer pain, etc., and can also be divided into nociceptive pain and neuropathic pain depending on the mechanism of occurrence. Nociceptive pain is an acute pain that appears physiologically mainly due to tissue damage, while neuropathic pain refers to pain that occurs due to abnormalities in the sensory nervous system without tissue damage. In particular, because the causes of neuropathic pain are very diverse, it is classified into several diseases. That is, diseases accompanied by persistent pain after damage to the nervous system, aftereffects of stroke, postherpetic neuralgia, trigeminal neuralgia, diseases related to the spine or spinal cord, lower extremity pain after spinal damage, neck pain and back pain due to neck or lumbar disc, and leg pain. Radiating pain, headache, hypersensitivity of muscles and surrounding tissues, myofascial pain syndrome and frozen shoulder, pain due to peripheral neuropathy, peripheral neuropathic pain due to diabetes, carpal tunnel syndrome, and other pain-related diseases such as complex regional pain syndrome, etc. It is divided into

This pain is the clinical symptom most commonly complained of by patients, but it is difficult for patients to accurately explain it verbally to doctors, and a method to objectively and quantitatively measure the intensity of pain felt by patients has not been developed to date. However, in order to evaluate the patient's disease, follow-up management, and determine treatment effectiveness, it is important to measure the patient's pain intensity with objective and quantitative values. General methods of measuring pain intensity include subjective methods using the McGill Pain Questionnaire and visual analogue scale (VAS), somewhat objective methods such as the emotional facial action coding system, and psychological methods. Methods such as the multi-phasic personality inventory (MMPI) are being applied. However, these pain intensity evaluation methods rely on the subjective evaluation of patients and doctors or analyze changes in facial expressions captured with a CCD camera, making it impossible to objectively and quantitatively evaluate pain intensity.

In order to improve these problems, a device was developed that can quantitatively measure the pain-inducing pressure on the pain-triggering point by applying pressure to the pain-triggering point using a pressure meter on the pain-triggering point of the body. In relation to this, the Korean Patent Publication discloses No. 10-2004-0090321 “Tenderness Measuring Device” has been proposed.

However, in this prior art, when a colliding object and a subject come into contact, if the moving direction of the colliding object is not maintained perpendicular to the contact surface of the measurement area, accurate physical quantity cannot be measured due to the load being concentrated on one side, and the skin is also chafed, causing clear damage due to the load. There is a problem of difficulty approving pain.

Additionally, when the pressure and force to be measured increase close to the level that causes the pain limit due to the load, the support supporting the subject's measurement area is pushed in the direction in which the load is applied due to a strong load, or the colliding object is pushed in the direction in which the load is applied or the colliding object is moved by the repulsive force. If the load is pushed in the opposite direction, there is a problem of not being able to measure accurate pressure and force. As the measuring position changes depending on the area to be measured, the position of the pain measuring device also moves, but if the measuring area is not properly supported, there is a problem. There are difficulties in measuring accurate pressure and force even in the location of the pain measuring device that has been moved.

Republic of Korea Public Patent No. 10-2020-0130944 Republic of Korea Public Patent No. 10-2015-0122936 Republic of Korea registered patent 10-1844736 Republic of Korea Open Patent No. 10-2017-0142150

Therefore, the present invention was devised to solve the above-described conventional problems. According to an embodiment of the present invention, the subject is subjected to quasi-static contact (pressing force and pressure) according to each body part of the subject (person). The purpose is to secure quantitative data on felt pain.

According to an embodiment of the present invention, pain caused by quasi-static contact on a part of the human body can be applied to an evaluation test to analyze the pain, thereby measuring force and pressure according to the degree of pain, and based on this, robot safety verification can be performed. We provide a pain threshold measurement device and measurement method induced by quasi-static contact that can be applied to the protocol for, establish pain evaluation standards caused by quasi-static contact based on the measured results, and develop safe collaborative robot operating conditions. It has a purpose.

In addition, according to an embodiment of the present invention, the force sensor attached to the colliding body ensures that the direction in which the force is measured matches the moving direction, and the moving direction of the colliding body of the pain measuring device moves up and down, left and right, forward and backward, and is based on the moving axis direction. A pain threshold measurement device and measurement method induced by quasi-static contact that is designed to be able to rotate, and is designed to be strongly fixed when fixation is necessary even if it moves freely and rotates by applying a clamp-type fixation device using a fixing screw. The purpose is to provide.

And according to an embodiment of the present invention, the support is also manufactured with a frame structure that can move up and down and forward and backward like the pain measurement device, so that it can be measured by applying a load in the correct direction along with the position of the pain measurement device, and the measurement area is designed to measure Reflecting the shape and characteristics, supports of flat (forehead, chest), cylindrical (long fingers, arms, fingers), and spherical (shoulders, knees) shapes that allow each body to lean on in a comfortable position can be modularly attached and detached. When the attached support moves the round bar up and down as a guide, it provides a device and measurement method for measuring the pain threshold caused by quasi-static contact, equipped with a device to compensate for gravity to prevent injury or damage to the device due to falling of the moving member. It has a purpose.

According to an embodiment of the present invention, a displacement measuring unit is attached to a displacement measuring sensor (laser sensor) or a pain measuring device attached to a support to measure the exact speed entering the test area and calculate the cut energy through the displacement data. The purpose is to provide a device and method for measuring pain thresholds induced by quasi-static contact.

According to an embodiment of the present invention, a vacuum cushion of a large moldable area is installed between the frame structure-based modular support and the mounted test site to secure the test site as a whole without separation, thereby providing quasi-static contact. The purpose is to provide a device and method for measuring pain thresholds caused by pain.

According to an embodiment of the present invention, the subject's safety is ensured by retracting the collider through a simple and intuitive operation of pulling the lever when a safety problem occurs during measurement or the pain limit is reached through a mechanical collider retraction device configured in the form of a lever. In order to reduce the measurement environment that can occur when performing multiple measurements and prevent the test operator from applying excessive loads, the monitoring unit can be mounted on the top of a support structure consisting of a frame structure to monitor the currently occurring force and displacement. The purpose is to provide a device and method for measuring pain thresholds induced by quasi-static contact.

Meanwhile, the technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly apparent to those skilled in the art from the description below. It will be understandable.

The first object of the present invention is to provide a pain threshold measurement device, comprising a main body, a moving stage installed to move and set the main body, and a collision body provided on the front side of the main body, the end of which contacts the subject's measurement site. A pain measuring device having a unit and a forward operation unit configured to move the impactor unit forward to pressurize the measurement site side of the subject; A supporter installed at a position opposite the impactor unit and seated on the subject's measurement area; and an input unit that inputs an input signal when it is determined that the subject is at the pain threshold.

And the moving stage includes a linear movement device provided to move the main body in the forward and backward directions, a rotation unit provided to rotate the main body about the vertical axis, and a vertical tilting unit provided to rotate the main body up and down. It can be characterized.

In addition, after the end surface of the collision unit is set in contact with the measurement part of the subject through movement of the main body, it may be characterized by including a fixing device that fixes the movement of the main body by the moving stage.

It may further include a safety lever that allows the collider unit to retract by operation of a test operator during measurement.

In addition, the colliding body unit includes a colliding body whose end surface is in contact with the measurement area, a pressure sensor provided on the end surface of the colliding body to measure the distributed pressure in real time during measurement, and a force sensor measuring the applied force in real time. It may be characterized as including.

In addition, the colliding body unit may further include an acceleration sensor that measures the speed of the colliding body entering the measurement area during measurement.

In addition, it may further include a monitoring unit that monitors force data measured by the force sensor, distributed pressure measured by the pressure sensor, and displacement data measured by the acceleration sensor in real time during measurement.

The monitoring unit may be characterized in that it calculates absolute pressure based on the force data and the distributed pressure at the time of the pain threshold input from the input unit, and calculates delivered energy based on the displacement data.

Additionally, the support may be installed on a frame that moves the support up and down and forward and backward to set it at the measurement position.

And the frame includes a main body frame constituting a rectangular border, a vertical moving member installed to move up and down on a vertical guide frame installed in the main body frame, and the support is mounted, and the support is adjusted to maintain a distance between the vertical moving members. It may be characterized by including front and rear guide rods that are configured to be adjustable.

In addition, it may further include a load compensation device installed between the vertical moving member and the main body frame.

In addition, the support may be configured in different shapes depending on the subject's measurement area, and may be configured to be attachable and detachable in a modular manner.

In addition, the support may further include a displacement sensor that measures displacement introduced into the measurement area.

It may further include a vacuum cushion installed between the support and the measurement area of the subject.

A second object of the present invention is a method of measuring pain threshold, comprising the steps of mounting a support having a shape that matches the measurement area of a subject to the frame of the support unit 200 and setting the position of the support on the frame; Moving the position of the main body through a moving stage and setting the pain measurement device so that the end surface of the impactor makes surface contact with the measurement site; A step of advancing the impact object by manipulating the forward operation unit and applying a load to the measurement area; the subject manipulating the input unit at a pain threshold; and calculating absolute pressure based on the force data measured by the force sensor at the pain critical point and the pressure distribution measured by the pressure sensor. It can be.

And in the step of manipulating the input unit, the monitoring unit monitors in real time the force data measured by the force sensor, the distributed pressure measured by the pressure sensor, and the displacement data measured by the acceleration sensor or displacement sensor, and in the calculating step, The monitoring unit may be characterized in that it calculates the delivered energy based on the displacement data.

In addition, the step of setting the pain measurement device may further include installing a vacuum cushion between the support and the measurement site of the subject.

According to the apparatus and method for measuring the pain threshold caused by quasi-static contact according to an embodiment of the present invention, the pain felt by the subject due to quasi-static contact (pressing force and pressure) is measured according to each body part of the subject (person). It has the effect of securing quantitative data.

According to the pain threshold measurement device and measurement method caused by quasi-static contact according to an embodiment of the present invention, pain caused by quasi-static contact on a part of the human body is applied to an evaluation test to analyze the pain and force according to the degree of pain. Overpressure can be measured, and based on this, it can be applied to protocols for robot safety verification, and based on the measured results, it has the advantage of establishing pain evaluation standards by quasi-static contact and developing safe collaborative robot operating conditions. there is.

In addition, according to the apparatus and method for measuring the pain threshold caused by quasi-static contact according to an embodiment of the present invention, the force sensor attached to the colliding object ensures that the direction of measuring force and the moving direction are consistent, and the colliding object of the nociceptor moves. It is designed to move up and down, left and right, forward and backward, and rotate based on the moving axis direction, and by applying a clamp-type fixing device using a fixing screw, it can be strongly fixed if fixation is necessary even though it moves and rotates freely. .

And according to the apparatus and method for measuring the pain threshold caused by quasi-static contact according to an embodiment of the present invention, the support is also manufactured with a frame structure that can be moved up and down and forward and backward like the pain measuring device, so that it can accurately match the position of the pain measuring device. It is designed to measure by applying a load in one direction, and reflects the shape and characteristics of the measurement area to position each body in a comfortable position, such as flat (forehead, chest), cylindrical (long fingers, arms, fingers), or spherical (shoulders, knees). The support in a shape that can be leaned on can be attached and detached in a modular manner, and the support attached through the load compensation device compensates for gravity to prevent injury or damage to the device due to the falling of the moving member when moving up and down using the round bar as a guide. There is a possible effect.

According to the apparatus and method for measuring the pain threshold caused by quasi-static contact according to an embodiment of the present invention, the accurate speed of entering the test area is achieved by attaching a displacement measuring unit to a displacement measuring sensor (laser sensor) attached to a support or a pain measuring device. By measuring, the cut energy can be calculated through displacement data.

According to the apparatus and method for measuring the pain threshold caused by quasi-static contact according to an embodiment of the present invention, a large moldable vacuum cushion is installed between the frame structure-based modular support and the mounted test site to reduce the separation. It can be fixed as if covering the entire test area.

According to the apparatus and method for measuring the pain threshold caused by quasi-static contact according to an embodiment of the present invention, the lever is pulled when a safety problem occurs during measurement or the pain limit is reached through a mechanical impactor retraction device configured in the form of a lever. The collider can be retracted through a simple and intuitive operation to ensure the safety of the subject, and the top of the support frame is composed of a frame structure to reduce the measurement environment that can occur during multiple measurement trials and prevent test operators from applying excessive loads. By mounting a monitoring unit on the device, the currently occurring force and displacement can be monitored.

Meanwhile, the effects that can be obtained from the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description below. You will be able to.

The following drawings attached to this specification illustrate preferred embodiments of the present invention, and serve to further understand the technical idea of the present invention along with the detailed description of the invention, so the present invention is limited only to the matters described in such drawings. It should not be interpreted as such.
1 is a configuration diagram of a device for measuring pain threshold induced by quasi-static contact according to an embodiment of the present invention;
Figure 2 is a flow chart of a method for measuring pain threshold induced by quasi-static contact according to an embodiment of the present invention;
Figure 3 is a photograph of a device for measuring pain threshold induced by quasi-static contact according to an embodiment of the present invention;
Figure 4 is a perspective view of a pain measuring device according to an embodiment of the present invention;
Figure 5 is a side view of a pain measurement device according to an embodiment of the present invention;
Figures 6 and 7 are perspective views of a pain measuring device according to an embodiment of the present invention;
8 and 9 are perspective views of a support unit according to an embodiment of the present invention;
10 and 11 are photographs of a support unit according to an embodiment of the present invention;
Figure 12a is a photograph of a support for measuring the neck, forehead, etc., and a vacuum cushion installed according to an embodiment of the present invention;
Figure 12b is a photograph of a support for measuring the shoulder, abdomen, thigh, etc., and a vacuum cushion installed according to an embodiment of the present invention.
Figure 12c shows a photograph of a support for measuring hands, arms, etc., and a vacuum cushion installed according to an embodiment of the present invention.

The above objects, other objects, features and advantages of the present invention will be easily understood through the following preferred embodiments related to the attached drawings. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments introduced herein are provided so that the disclosed content will be thorough and complete and so that the spirit of the present invention can be sufficiently conveyed to those skilled in the art.

In this specification, when an element is referred to as being on another element, it means that it may be formed directly on the other element or that a third element may be interposed between them. Also, in the drawings, the thickness of components is exaggerated for effective explanation of technical content.

Embodiments described herein will be explained with reference to cross-sectional views and/or plan views, which are ideal illustrations of the present invention. In the drawings, the thicknesses of films and regions are exaggerated for effective explanation of technical content. Therefore, the shape of the illustration may be changed depending on manufacturing technology and/or tolerance. Accordingly, embodiments of the present invention are not limited to the specific form shown, but also include changes in form produced according to the manufacturing process. For example, an area shown as a right angle may be rounded or have a shape with a predetermined curvature. Accordingly, the regions illustrated in the drawings have properties, and the shapes of the regions illustrated in the drawings are intended to illustrate a specific shape of the region of the device and are not intended to limit the scope of the invention. In various embodiments of the present specification, terms such as first and second are used to describe various components, but these components should not be limited by these terms. These terms are merely used to distinguish one component from another. Embodiments described and illustrated herein also include complementary embodiments thereof.

The terminology used herein is for describing embodiments and is not intended to limit the invention. As used herein, singular forms also include plural forms, unless specifically stated otherwise in the context. As used in the specification, 'comprises' and/or 'comprising' does not exclude the presence or addition of one or more other elements.

In describing specific embodiments below, various specific details have been written to explain the invention in more detail and to aid understanding. However, a reader skilled in the art to understand the present invention can recognize that it can be used without these various specific details. In some cases, it is mentioned in advance that when describing the invention, parts that are commonly known but are not significantly related to the invention are not described in order to prevent confusion without any reason in explaining the invention.

Hereinafter, the configuration, function, and measurement method of the device for measuring the pain threshold induced by quasi-static contact according to an embodiment of the present invention will be described.

First, Figure 1 shows the configuration of a device for measuring pain threshold induced by quasi-static contact according to an embodiment of the present invention. And Figure 2 shows a flowchart of a method for measuring pain threshold induced by quasi-static contact according to an embodiment of the present invention.

As shown in Figure 1, it can be seen that the apparatus 1 for measuring the pain threshold induced by quasi-static contact according to an embodiment of the present invention is comprised entirely of a pain measurement device and a support unit 200.

The pain measuring device includes a main body 10, a moving stage 30 installed to move and set the main body 10, and a collision body provided on the front side of the main body 10, the end of which contacts the subject's measurement site. It is configured to have a unit 50 and a forward operation unit 20 configured to move the collision unit 50 forward to pressurize the measurement site side of the subject.

Additionally, the support unit 200 is installed in a position opposite to the impactor unit 50 and is configured to be seated on the subject's measurement area. And the subject is configured to input an input signal through the input unit 2 when it is determined that the pain threshold is reached.

Figure 3 shows a photograph of a pain threshold measurement device induced by quasi-static contact according to an embodiment of the present invention, Figure 4 is a perspective view of a pain measurement device according to an embodiment of the present invention, and Figure 5 is an embodiment of the present invention. A side view of the pain measuring device according to and FIGS. 6 and 7 show a perspective view of the pain measuring device according to an embodiment of the present invention.

According to an embodiment of the present invention, the moving stage 30 includes a linear moving device 32 provided to move the main body 10 in the forward and backward directions, and a vertical movement unit 31 that moves the main body 10 in the vertical direction. , It may be configured to include a rotation unit 33 provided to rotate the main body 10 about the vertical axis direction, and a vertical tilting unit 34 provided to rotate the main body 10 up and down.

Therefore, the test operator manipulates the linear movement device 32, the rotation unit 33, the vertical movement unit 31, and the vertical tilting unit 34 to move the main body 10 to the end section of the collision body 55. The interview is set to touch the subject's measurement area. That is, according to the embodiment of the present invention, the force sensor 52 attached to the colliding body 55 ensures that the direction in which the force is measured matches the moving direction, and the moving direction of the colliding body 55 of the pain measuring device is up, down, left and right. , It is designed to move back and forth and rotate based on the direction of the moving axis.

After setting, the movement of the main body 10 by the moving stage 30 is fixed through a clamp-type fixing device consisting of a fixing lever 35, etc. In other words, by applying a clamp-type fixation device using a fixing screw, it is designed to be strongly fixed when fixation is necessary even though it moves and rotates freely, so that the pressure and force to be measured are close to the level that causes pain limit due to load. When it increases, the support supporting the subject's measurement area is not pushed in the direction in which the load is applied due to a strong load, or the colliding body 55 is not pushed in the opposite direction to which the load is applied due to the repulsive force.

Additionally, the pain measuring device according to an embodiment of the present invention may be configured to include a safety lever 40 that allows the collider unit 50 to retract by manipulation by a test operator during measurement. In other words, the safety of the subject can be secured by retracting the collider 55 through a simple and intuitive action of pulling the lever when a safety problem occurs during measurement or the pain limit is reached through a mechanical collider retraction device configured in the form of a lever. There will be.

And the collider unit 50 according to an embodiment of the present invention includes a collider 55 whose end surface is in contact with the measurement part, a connection part 51 connecting the collider 55 and the main body 10, and a collider 55. ) It may be configured to include a film-type pressure sensor 53 that is provided on the end surface side and measures the distributed pressure in real time during measurement, and a force sensor 52 that measures the applied force in real time. This force sensor 52 may be configured as a load cell.

In addition, the pain measuring device according to an embodiment of the present invention may be configured to secure displacement data of the colliding body 55 entering during measurement by further including a displacement measuring unit that measures the displacement of the colliding body entering the measurement site during measurement. The displacement measuring unit is composed of an acceleration sensor, which can measure the speed of the colliding object, and an encoder on the forward handle (handle rotation recorder: if the pitch of the screw connected to the rotation handle is known, the displacement is calculated through the number of rotations of the handle. Sensors such as (can be used) can also be used.

In addition, according to an embodiment of the present invention, during measurement, the force data measured by the force sensor 52, the distributed pressure measured by the pressure sensor 53, and the displacement data measured by the displacement measuring unit 54 are monitored in real time. It may be configured to include a monitoring unit. In other words, in order to reduce the measurement environment that may occur when performing multiple measurements and prevent the test operator from applying excessive loads, a monitoring unit is installed on the top of the support frame consisting of a frame structure to monitor the currently occurring force and displacement. It can be.

Additionally, this monitoring unit may be configured to calculate absolute pressure based on force data and distributed pressure at the pain threshold input from the input unit 2, and calculate and display the delivered energy based on displacement data.

Figures 8 and 9 show a perspective view of a support unit according to an embodiment of the present invention. And Figures 10 and 11 show photographs of a support unit according to an embodiment of the present invention.

The support unit 200 according to an embodiment of the present invention is configured to be installed on a frame provided to set the support 250 at a measurement position by moving it up and down and forward and backward.

The frame according to this embodiment of the present invention is installed between the main body frame 210 forming a square border, a pair of vertical moving frames 220 installed in the main body frame 210, and the vertical moving frames 220. It is provided with an upper and lower guide frame 221, and includes a vertical movement member 240 installed to move up and down on the upper and lower guide frame 221. That is, the vertical guide frame 221 is installed to guide the vertical movement of the vertical movement member 240. In addition, front and rear guide rods 241 are installed between the support 250 and the upper and lower members 240, so that the support can adjust the front and rear distance between the upper and lower members.

That is, the support unit 200 is also manufactured with a frame structure that can be moved up and down and forward and backward like the pain measurement device 100, so that the support unit 250 can be measured by applying a load in the correct direction along with the position of the pain measurement device 100. It is designed to do so. A modular support based on a frame structure is also equipped with a clamp-type fixing device that can be positioned (up and down and forward and backward) to easily adjust the angle of the mounting surface and the surface on which the impactor 55 is mounted.

Additionally, the support 250 according to an embodiment of the present invention is configured in different shapes depending on the subject's measurement area, and is configured to be attachable and detachable in a modular manner.

Figure 12a is a photograph of a support for measuring the neck, forehead, etc., and a vacuum cushion according to an embodiment of the present invention, and Figure 12b is a photograph of a support for measuring the shoulder, abdomen, thighs, etc., and a vacuum cushion according to an embodiment of the present invention. This installed photo, Figure 12c, shows a photo of a support for measuring hands, arms, etc., and a vacuum cushion installed according to an embodiment of the present invention.

In other words, by reflecting the shape and characteristics of the measurement area, we have modular supports of shapes such as flat (forehead, chest), cylindrical (long fingers, arms, fingers), and spherical (shoulders, knees) that allow each body to lean on in a comfortable position. It is designed to be detachable.

And the support unit 200 according to an embodiment of the present invention may be configured to include a load compensation device 230 installed between the vertical movement member 240 and the main body frame 210. That is, when the attached support 250 and the moving member 240 are moved up and down using the upper and lower guide frame 221 as a guide, a device to compensate for gravity is installed to prevent injury or damage to the device due to falling. .

And this support 250 may further include a displacement sensor 260 consisting of a laser sensor that measures the displacement of the collision body 55 entering the measurement area. In other words, displacement data is required to calculate the energy delivered to the measurement area by the test device after the collision, and in the embodiment of the present invention, the displacement sensor (laser sensor) 260 attached to the support or, as mentioned above, the pain measuring device By attaching a displacement measuring unit 54 to the test site, displacement data can be measured by measuring the exact speed of the test unit.

And according to the embodiment of the present invention, as shown in FIGS. 12A to 12C, it can be seen that during measurement, a vacuum cushion 270 is installed between the support 250 and the measurement site of the subject.

Even if the impactor 55 and the support 250 are entered at a precise angle by adjusting the positions and angles, if the test area is not accurately fixed, the impactor 55 may enter and be distorted according to the curvature of the body part. In this case, the correct pressure may occur. and force will not be measured. To solve this problem, in the embodiment of the present invention, a large moldable vacuum cushion 270 is installed between the frame structure-based modular support 250 and the mounted measurement area to completely surround the test area without any separation. It is designed to be fixed.

Below, we will explain how to measure pain threshold using the aforementioned measuring device.

First, the support 250 having a shape that matches the subject's measurement area is mounted on the frame of the support unit 200 (S1).

Then, the position of the support 250 is set by moving it up and down and back and forth on the frame (S2).

Then, a vacuum cushion 270 is installed between the support 250 and the subject (S3), and the position of the main body 10 is tilted up and down, rotated, forward and backward, and up and down through the moving stage 30 of the pain measurement device 100. , the pain measuring device 100 is set so that the end surface of the impactor 55 is in surface contact with the measurement site of the subject (S4).

Then, by manipulating the forward handle 20, the impact body 55 moves forward and a load is applied to the measurement area (S5).

During measurement, the force sensor 52 measures the applied force, the pressure sensor 53 measures the pressure distribution, and measures displacement data in real time through the displacement sensor 260 or the displacement measurement unit 54, The measured data is displayed in real time through the monitoring unit 300 (S6).

Then, when it is determined that the subject has reached the pain threshold, the input unit 2 is manipulated (S7).

Then, the absolute pressure is calculated based on the force data measured by the force sensor 52 and the pressure distribution measured by the pressure sensor 53 at the critical pain point. Then, the transmitted energy is calculated based on the displacement data (S8).

In addition, the apparatus and method described above are not limited to the configuration and method of the above-described embodiments, but all or part of each embodiment can be selectively combined so that various modifications can be made. It may be composed.

1:Device for measuring pain threshold induced by quasi-static contact
2: Input section
10: Body
20: Control panel
30:Mobile stage
31: Shanghai East Unit
32:Linear movement device
33: Rotation unit
34:Up and down tilting unit
35:Fixing lever
40: Safety lever
50: Collider unit
51: Connection part
52: Force sensor
53: Pressure sensor
54: Displacement measurement unit
55: Collision body
200: Support unit
210: Body frame
220:Upward moving frame
221: Upper and lower guide frame
230: Load compensation device
240:Shanghai East Branch
241: Front and rear guide rod
250: support
260: Displacement sensor
270: Vacuum cushion
300: Monitoring department

Claims (17)

In the pain threshold measurement device,
A main body, a moving stage installed to move and set the main body, a collision unit provided on the front side of the main body whose end surface is in contact with the subject's measurement area, and the collision unit being moved forward to the subject's measurement area. A pain measuring device having a forward operation unit configured to press, and a fixing device that fixes the movement of the main body by the moving stage after the end surface of the colliding body unit is set in contact with the measurement site of the subject through movement of the main body. ; A supporter installed at a position opposite the impactor unit and seated on the subject's measurement area; And an input unit that inputs an input signal when it is determined that the subject is at the pain threshold;
The moving stage includes a linear moving device provided to move the main body in the forward and backward directions, a rotation unit provided to rotate the main body about the vertical axis, and a vertical tilting unit provided to rotate the main body up and down,
The colliding body unit includes a colliding body whose end surface is in contact with the measurement area, a pressure sensor provided on the end surface side of the colliding body to measure the distributed pressure in real time during measurement, and a force sensor measuring the applied force in real time. Contains,
A displacement measuring unit provided in the pain measuring device to measure the displacement of the colliding object; And a monitoring unit that monitors the force data measured by the force sensor, the distributed pressure measured by the pressure sensor, and the displacement data measured by the displacement measurement unit in real time during measurement,
The monitoring unit calculates absolute pressure based on the force data and the distributed pressure at the pain threshold input from the input unit, and calculates delivered energy based on the displacement data,
The support is installed on a frame that moves the support up and down and forward and backward to set it at the measurement position,
The frame includes a main body frame constituting a rectangular border, a vertical moving member installed to move up and down on a vertical guide frame installed within the main body frame, and the support is mounted, and the support can be used to adjust the distance between the vertical moving members. It includes front and rear guide rods configured to allow
It includes a load compensation device installed between the vertical moving member and the main body frame,
The support is configured in different shapes depending on the subject's measurement area, and is configured to be attachable and detachable in a modular manner.
The support includes a displacement sensor that measures displacement introduced into the measurement area,
A pain threshold measurement device induced by quasi-static contact, comprising a vacuum cushion installed between the support and the measurement area of the subject.
delete delete According to clause 1,
A pain threshold measurement device induced by quasi-static contact, further comprising a safety lever that allows the collider unit to retract by operation of a test operator during measurement.
delete delete delete delete delete delete delete delete delete delete In the method of measuring pain threshold using the pain threshold measuring device according to claim 1,
Mounting a support having a shape that matches the subject's measurement area on the frame of the support unit and setting the position of the support on the frame;
Moving the position of the main body through a moving stage and setting the pain measurement device so that the end surface of the impactor makes surface contact with the measurement site;
A step of advancing the impact object by manipulating the forward operation unit and applying a load to the measurement area;
the subject manipulating the input unit at a pain threshold; and
A pain threshold measurement method induced by quasi-static contact, comprising: calculating absolute pressure based on force data measured by the force sensor at the pain threshold point and pressure distribution measured by the pressure sensor.
According to clause 15,
In the step of manipulating the input unit, the monitoring unit monitors force data measured by the force sensor, distributed pressure measured by the pressure sensor, and displacement data measured by the displacement measuring unit or displacement sensor in real time,
In the calculating step, the monitoring unit calculates the delivered energy based on the displacement data. A pain threshold measurement method induced by quasi-static contact.
According to clause 15,
In the step of setting the pain measurement device,
A method of measuring pain threshold induced by quasi-static contact, further comprising installing a vacuum cushion between the support and the measurement site of the subject.

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