WO2001035822A1 - Dispositif pour la detection de la sensibilite a la douleur - Google Patents
Dispositif pour la detection de la sensibilite a la douleur Download PDFInfo
- Publication number
- WO2001035822A1 WO2001035822A1 PCT/JP1999/006354 JP9906354W WO0135822A1 WO 2001035822 A1 WO2001035822 A1 WO 2001035822A1 JP 9906354 W JP9906354 W JP 9906354W WO 0135822 A1 WO0135822 A1 WO 0135822A1
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- Prior art keywords
- pressure
- pain
- sac
- blood
- detecting
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/021—Measuring pressure in heart or blood vessels
- A61B5/022—Measuring pressure in heart or blood vessels by applying pressure to close blood vessels, e.g. against the skin; Ophthalmodynamometers
- A61B5/02208—Measuring pressure in heart or blood vessels by applying pressure to close blood vessels, e.g. against the skin; Ophthalmodynamometers using the Korotkoff method
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/021—Measuring pressure in heart or blood vessels
- A61B5/022—Measuring pressure in heart or blood vessels by applying pressure to close blood vessels, e.g. against the skin; Ophthalmodynamometers
- A61B5/0225—Measuring pressure in heart or blood vessels by applying pressure to close blood vessels, e.g. against the skin; Ophthalmodynamometers the pressure being controlled by electric signals, e.g. derived from Korotkoff sounds
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/48—Other medical applications
- A61B5/4824—Touch or pain perception evaluation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
- A61B5/7235—Details of waveform analysis
- A61B5/7253—Details of waveform analysis characterised by using transforms
- A61B5/7257—Details of waveform analysis characterised by using transforms using Fourier transforms
Definitions
- the present invention relates to a device for detecting pain information, and more particularly, to a device for detecting pain information, which is capable of extracting information of a pain felt by a patient in the form of an electric signal by attaching a tying band to a patient's upper arm.
- a device for detecting pain information which is capable of extracting information of a pain felt by a patient in the form of an electric signal by attaching a tying band to a patient's upper arm.
- various detection devices and measurement devices are used to recognize various events occurring in a patient's body as objective data.
- blood pressure measurement is the most convenient means of measurement, and recently, blood pressure measurement devices for general household use are also commercially available.
- healthcare professionals obtain information on subjective symptoms by asking the patient for a chief complaint or asking the patient himself, and also collect objective information using various detection devices or measurement devices, and obtain this information. The final diagnosis will be made by comprehensively examining.
- Pain is the most prominent symptom of the patient himself, and most of the interviews at the first consultation complain of pain. Healthcare professionals typically ask patients what areas and how to ache, and the patient's response identifies the location and type of pain. However, the information about pain obtained through such interviews is merely information obtained through verbal expression from the patient's subjectively felt pain information, and cannot be said to be objective data. Attempts to measure pain as objective data have been studied in various fields. Pain signals are considered to be electrical signals that are transmitted through the nervous system in the body.For example, a needle is inserted near the nerve and a minute current flowing through the needle is used in a bridge circuit. Devices that detect pain as objective electrical signals by detecting the pain have been developed. However, it has not been clinically practical because patients need to puncture painful areas.
- an object of the present invention is to provide a pain information detecting device capable of extracting information on pain in the form of an electric signal by a simple method. Disclosure of the invention
- the present invention is based on the idea that waves propagating through arteries contain information about pain.
- the artery serves as a transport tube for blood circulating in the body, and is a circulatory network spanning the body from the heart to the periphery.
- the various physical data obtained from this artery is thought to contain valuable information about the entire body.
- a typical example is a blood pressure value, which provides important physical information about the entire body, usually the force measured in the upper arm.
- the present inventor has determined that there is some correlation between Korotkoff sound waveform and pain while measuring the Korotkoff sound generated when blood passes through an artery under compression for a large number of patients. I found it. In particular, if the Korotkoff sound signal is Fourier transformed and presented, the pain information can be presented in an easily recognizable form, and the pain information can be detected by a simple method. Was found.
- a tying band having a blood sac for blocking an artery, a pressure control device for controlling the pressure of the blood sac, and blood passing through an artery under compression by the blood sac.
- a sonic sensor for detecting Korotkoff sound generated at the time of operation
- an arithmetic unit for performing a Fourier transform of a signal of the Korotkoff sound detected by the sonic sensor
- a presentation device for presenting a result of the Fourier transform as pain information.
- the detection sac which is partially connected to the blood sac and has a smaller capacity than the blood sac is provided on the ligament.
- the sound sensor can detect Korotkoff sounds based on pressure fluctuations in the detection capsule, thereby improving the Korotkoff sound detection sensitivity.
- a third aspect of the present invention in the device for detecting pain information according to the first or second aspect described above, after Fourier transform, components having a predetermined frequency or higher are cut and presented, and This is to suppress the presentation.
- a result of the Fourier transform is presented as a spectrum waveform or a histogram, and This makes it easier to grasp the target.
- the pressure in the blood sac is gradually increased from a sufficiently high pressure capable of blood issuance by the pressure control device.
- the control is performed so as to decrease it, and the result of Fourier transform for each Korotkoff sound detected at a plurality of pressures can be presented.
- a sixth aspect of the present invention is directed to the pain information detecting device according to the fifth aspect described above, which utilizes the fact that a correlation is found between the pressure of the ischemic sac at the time of Korotkoff sound detection and the position of each body part.
- the result of Fourier transform for each Korotkoff sound detected at a plurality of pressures is presented corresponding to a specific part of the body.
- FIG. 1 is a block diagram showing a basic configuration of a device for detecting pain information according to one embodiment of the present invention (the band portion is a plan view).
- FIG. 2 shows a state in which the bandage portion of the detection device shown in FIG. 1 is attached to the upper arm portion
- FIG. 3 is a graph showing an operation procedure of the detection device shown in FIG.
- FIG. 4 is a cross-sectional view showing the relationship between the ligament and the artery during the detecting operation by the detecting device shown in FIG.
- FIG. 5 shows a Korotkoff sound waveform detected by the detection device shown in FIG. 1.
- FIG. 6 shows a Fourier transform spectrum of the first Korotkoff sound wave in a state in which a specific patient has no pain. It is a graph.
- FIG. 7 is a graph showing a Fourier transform spectrum of the first Korotkoff sound waveform in a state in which a specific patient has pain.
- FIG. 8 is a graph showing a Fourier transform spectrum of the fourth Korotkoff sound waveform in a state where a specific patient has no pain.
- FIG. 9 is a graph showing a Fourier transform spectrum of the fourth Korotkoff sound waveform in a state in which a specific patient has pain.
- FIG. 10 is a graph showing a Fourier transform spectrum of the sixth Korotkoff sound waveform in a state where a specific patient has no pain.
- FIG. 11 is a graph showing the Fourier transform spectrum of the sixth Korotkoff sound waveform in a state in which a specific patient has pain.
- FIG. 12 is a graph showing a Fourier transform spectrum of the eighth Korotkoff sound waveform in a state where a specific patient has no pain.
- FIG. 13 is a graph showing the Fourier transform spectrum of the eighth Korotkoff sound waveform in a state where a specific patient is in pain.
- FIG. 14 is a schematic diagram of the arterial portion of the human circulatory system.
- FIG. 15 is a display screen diagram showing an example in which the results of the Fourier transform for each Korotkoff sound detected at a plurality of pressures are presented in association with specific parts of the body.
- FIG. 16 is a display screen diagram showing an example in which the result of Fourier transform is displayed as a histogram by the detection device shown in FIG.
- FIG. 17 is a plan view showing a modification of the binding band that can be used in the detection device shown in FIG.
- FIG. 18 is a view showing a state where the shackle shown in FIG. 17 is attached to the upper arm.
- FIG. 1 shows a basic configuration of a device for detecting pain information according to one embodiment of the present invention.
- This device is roughly divided into two components, a device main body 100 (indicated by a dotted line) and a binding band 200.
- the shackle 200 has an insufflation sac 210 for obstructing the artery in the upper arm, and a detection sac 220 having a smaller volume than the sac 210, and the sac 210 and The detection capsules 220 are connected to each other at a connection path 230.
- the ischemic sac 210 has a size necessary to insulate the artery of the upper arm, and in the case of the present embodiment, the length L 1 in the figure is about 12 cm.
- the detection bag 220 has a size suitable for detecting Korotkoff sounds.
- the length L 2 in the figure is about 2 cm.
- a conduit 240 extends from the ischemia sac 210 to the outside to allow air to flow, and a conduit 250 extends from the detection sac 220 to the outside.
- the strap 200 is used by being attached to the upper arm in the direction shown in FIG.
- the device main body 100 has the following configuration.
- an acoustic wave sensor 110 and a pressure sensor 120 are provided in a pipeline 101 to which the conduit 250 is connected.
- the force is a sensor through the conduit 2 5 0 to measure the pressure of the test De ⁇ 2 2 within 0?
- the pressure sensor 1 2 0 measurement those pressure values its
- the acoustic sensor 110 is suitable for detecting pressure fluctuations belonging to the frequency band of sound waves, especially for detecting the Korotkoff sound frequency band. It is a suitable sensor.
- the analog signal detected by the sound wave sensor 110 is amplified by the amplifier 111, converted into a digital signal by the A / D converter 112, and provided to the CPU 130.
- the analog signal detected by the pressure sensor 120 is amplified by an amplifier 121, converted into a digital signal by an AZD converter 122, and provided to a CPU 130.
- An air pump 140 and a leak valve 150 are connected to a conduit 102 to which the conduit 240 is connected.
- the air pump 140 and the leak knob 150 are controlled by the CPU 130.
- the duct 101 and the duct 102 are connected to each other, and the ischemic sac 210 and the detection sac 220 are connected to each other via a connection 230. Therefore, the ischemic sac 210 and the detection sac 220 are originally maintained at the same pressure. However, since ischemia sac 2 1 0 capacity mosquitoes?
- the acoustic wave sensor 110 be connected as close to the conduit 250 as possible, as shown in the example in the figure, so that Korotkoff sounds mainly generated in the detection capsule 220 are observed.
- the memory 160 is provided with an area for storing a program executed by the CPU 130 and data obtained by executing the program.
- the CPU 130 executes an operation procedure described later based on the program in the memory 160, and stores data obtained as a result in the memory 160.
- a display device 170 for displaying the detection result and a printer 180 for printing the detection result are connected to the CPU 130.
- the strap 200 is attached to the upper arm of the patient.
- the arterial of the upper arm should be such that the ischemia sac 210 is upstream and the detection sac 220 is downstream. It can be installed in the right direction. Then, it is provided on the device main body 100 side.
- the measurement start switch (not shown) is pressed, the CPU 130 executes a series of measurement operations based on the program in the memory 160.
- the procedure of this measurement operation will be described using the graph of FIG.
- this detection device has the air pump 140 and the leak valve 150, and can control the pressure of the blood sac 210 and the detection sac 220. That is, when increasing the pressure, the air pump 140 is operated to feed air into the capsule, and when decreasing the pressure, the leak valve 150 is opened to allow the air inside the capsule to leak.
- the graph in Fig. 3 shows the change in intracapsular pressure after the start of measurement, and the CPU 130 sets the air pump 140 and leak valve 1 so that the intracapsular pressure changes as shown in this graph. An operation of giving a predetermined control signal to 50 is performed.
- the CPU 130 activates the air pump 140 to send air into the capsule and gradually increase the pressure.
- the ischemic sac 210 then gradually compresses the artery, eventually reaching a pressure at which complete ischemia occurs (points AB in the graph).
- the relationship between the shackle band 200 (the ischemia sac 210 and the detection sac 220) and the artery 300 is shown in the sectional view of the state 1 in FIG.
- the left side of the figure is the heart and the right side is the peripheral, and the blood flows through the artery 300 from the left side to the right side of the figure as a pulse wave synchronized with the heartbeat.
- the pressure at this time is known as the aortic closure scar pressure DNP.
- the pressure in the ischemic sac 210 is further reduced, the ischemic state of the artery 300 is gradually released, as shown in state 3 in FIG. 4, and the resistance to blood flow decreases.
- the amplitude of the Korotkoff sound gradually decreases.
- the Korotkoff sound has a substantially constant amplitude even when the pressure is reduced.
- the pressure corresponding to this point F is the pressure known as the diastolic pressure DP, and corresponds to the static pressure of the artery 300 as shown in state 4 in FIG.
- the pressure is further reduced (points F to G), as shown in state 5 in FIG. 4, the ligament band 200 floats from the artery 300, and the pressure further decreases from point G. Then the Korotkoff sound disappears and reaches point H.
- This measurement operation is similar to the blood pressure measurement operation of a general sphygmomanometer, but in the blood pressure measurement operation, the systolic pressure SP (point D) at which Korotkoff sound is generated, the Korotkoff sound power ⁇ , and the While the diastolic pressure DP (point F) is required, the waveform of the Korotkoff sound itself is captured as data in the apparatus for detecting pain information according to the present invention. That is, the waveform of the Korotkoff sound generated in the pressure range from point D to G in the graph of FIG. 3 is taken from the sound wave sensor 110 to the CPU 130 and stored as data in the memory 160. Will be done.
- Korotkoff sounds when blood passes through arteries under compression That is a phenomenon that has been known for nine decades.
- this Korotkoff sound is only used in blood pressure monitors to determine systolic pressure SP (point D) and diastolic pressure DP (point F).
- a major feature of the present invention is that the Korotkoff sound waveform data itself, which has been conventionally used only as blood pressure information, is treated as important data including pain information. Since the systolic pressure SP (point D) and the diastolic pressure DP (point F) are obtained by the above-described measurement operation, the device according to the present embodiment also has a function as a general sphygmomanometer. become.
- FIG. 5 is a graph showing an example of a Korotkoff sound waveform actually measured by the detection device according to this embodiment.
- the horizontal axis in the figure is the time axis (sec), and this time axis corresponds to the pressure axis within the pressure range from points D to G in the graph of FIG.
- the left end of the graph shown in Fig. 5 corresponds to point D
- the right end corresponds to point G.
- the pulse-like waveform that appears repeatedly at (beat cycle) is the individual Korotkoff sound waveform, and the waveform on the left side of the figure becomes the waveform detected at a higher pressure.
- the first waveform Kl, the second waveform ⁇ 2, the third waveform ⁇ 3, ... are numbered in order from the waveform detected at the higher pressure (systolic pressure SP). I do.
- the CPU 130 performs the pressure control operation as described above, and performs a process of performing a Fourier transform on the signal of each Korotkoff sound obtained in the memory 160.
- This processing can be performed by an operation based on a fast Fourier transform (FFT) program prepared in the memory 160.
- FFT fast Fourier transform
- This Fourier transform is performed independently on the first waveform Kl, the second waveform ⁇ 2, the third waveform ⁇ 3, ... for each Korotkoff sound waveform.
- the result of the Fourier transform thus obtained is displayed on the screen by the display device 170, and is printed on paper by the printer 180 as necessary.
- the result of this Fourier transform is data that objectively indicates patient's pain information.
- the actual Korotkoff sound waveform contains a noise component
- components having a predetermined frequency or higher are cut and presented.
- a component above 150 Hz included in the acoustic waveform captured as a Korotkoff sound is regarded as a noise component, and a frequency component above 150 Hz is cut off. And presents the result of the Fourier transformation.
- the detection example shown here is the measurement result for a patient with a shoulder joint disorder.
- the patient complained that raising her right arm above horizontal caused severe pain in her right shoulder. Therefore, two states, one with the right arm hanging down aside (painless state) and the other with the right arm raised above horizontal (painful state), were taken by the detection device according to the present embodiment.
- a measurement was made. In other words, the band was worn on the upper right arm, and the above-mentioned series of measurement operations was performed in a state of “no pain” with the right arm hanging down. The same series of measurement operations was performed in the state of "".
- FIG. 6 and 7 are graphs each showing a result of the Fourier transform on the first waveform K1 (Korotkoff sound waveform generated at the point D) as a spectrum waveform.
- the frequency components above 150 Hz are emphasized as noise components, so that each spectrum waveform has only the frequency components below 150 Hz. .
- both are the first waveforms, the spectrum waveforms of both are quite different. This is because the spectrum waveform in Fig. This is because the spectrum waveform in FIG. 7 is a measurement result in a “painful” state, while the measurement result is in a “deemed” state. It can be seen that the waveform in FIG. 7 contains many steep peaks.
- the inventor of the present application considers this phenomenon as follows. That is, there is some tissue is motion in the area where the pain is occurring, and this tissue vibration may propagate to the artery and be observed as a component of Korotkoff sound via the ligament. thinking.
- a Fourier transform spectrum waveform of Korotkoff sound measured at a desired pressure can be displayed on the screen of the display device 170, In addition, printing can be performed on paper by the printer 180.
- the medical staff can objectively grasp the information on the pain that the patient may be feeling to some extent. For example, as shown in FIG. 7, when a large number of peak force? Spectrum waveforms present obtained, as possible out to infer a "patient feels stinging". Of course, the spectrum waveform obtained in this way does not provide an accurate picture of all of the pain experienced by the patient. Diagnosis remains the same. However, it is of great significance to be able to collect some information on pain as objective data called spectral waveforms.
- the apparatus detects Korotkoff sounds at a plurality of pressures, and presents the results of Fourier transform for each of these Korotkoff sound waveforms.
- Examination of the clinical data collected by the inventor of the present application shows that each Korotkoff sound waveform mainly includes information on pain at a site corresponding to the banding pressure when the Korotkoff sound was detected. You can guess that you have 5 'power.
- the first waveform K1 mainly contains pain information near the shoulder
- the fourth waveform K4 mainly shows the vicinity of the heart.
- the sixth waveform K6 mainly includes pain information near the lungs
- the eighth waveform K8 mainly includes pain information near the stomach
- the tenth waveform K10 Contains mainly pain information near the liver
- the 12th waveform 12 mainly contains pain information near the kidney
- the 16th waveform K16 mainly contains information near the thigh.
- the second waveform K22 mainly contains information near the knee
- the second waveform K28 mainly contains information about the periphery of the foot, and so on. Can be associated with each part.
- the specific correspondence described above is different for each individual patient. Seem. For example, pain near the stomach may be the most prominent on the eighth waveform in one patient, but most prominent on the 10th waveform in another patient.
- Fig. 14 This model shows the state in which blood pumped from the heart is sent to various parts of the body through arteries. That is, a part of the blood that has flowed out of the heart is sent from the shoulder through the upper arm to the periphery of the palm (the force shown only for the right arm in the figure has a similar circulatory system for the left arm). One part is sent to the head, and another part is sent to the lungs, stomach, liver, kidneys, thighs, and peripheral parts of the feet.
- the heart functions as a pump that pumps blood, and the blood is pushed into the arteries in synchrony with the heartbeat, which corresponds to the contraction of the pump.
- the white arrow BF shown in FIG. 14 indicates the direction of the blood flow.
- pressure fluctuations caused by the beating of the heart are transmitted to the arteries as pulse waves, and when these pulse waves collide with living tissue (acting as a resistance element to receive blood) in each part of the body, the reflected waves power? has been known to occur.
- the arrow RW shown in FIG. 14 indicates the direction of travel of the reflection wave (reflection wave) heading toward the band 200 attached to the upper arm.
- the bandage 200 in the apparatus according to the present embodiment when the bandage 200 in the apparatus according to the present embodiment is attached to the upper arm, the bandage 200 has the actual blood flow indicated by the arrow BF and the reflected wave indicated by the arrow RW. Will be reached.
- the amount of blood 310 force corresponding to the pressure of the ischemic sac 210 passes at a cycle synchronized with the heartbeat. Will be.
- a Korotkoff sound is generated.
- the time for the reflected wave to reach the binding band 200 is different for each reflected wave.
- one pulse produces a pulse wave that is Let's say that it has spread to the head and, on the other hand, to the periphery of the foot.
- the time required for the reflected wave generated at the shoulder to reach the binding band 200 of the upper arm and the time required for the reflected wave generated at the periphery of the foot to reach the binding band 200 of the upper arm are compared.
- the length of the propagation path is different, so the arrival time of the former is shorter than the arrival time of the latter.
- the reflected wave of the pulse wave generated by this beat reaches the binding band 200 with a time difference from each part of the body.
- the Korotokoff sound is observed only at the moment when blood passes under the shackle, the reflected wave superimposed and observed on this Korotokoff sound happens to be However, it is a reflected wave that has reached the binding band 200.
- the average blood movement velocity (blood flow velocity) in the brachial artery is about 1.5 mZ sec, and the distance from the heart to the upper arm is, for example, 60 cm. Then, about 0.4 sec after blood is pumped out by the heartbeat, Korotkoff sound power will be observed.
- the propagation velocity (pulse wave velocity) of the pressure fluctuation in the aorta is known to be about 4 to 5 mZ sec, which is about three times the blood flow velocity.
- the pulse wave generated in the heart propagates through the aorta and reaches the kidney, and the reflected wave generated here returns to the aorta and returns to the brachial artery
- the propagation speed of the pulse wave (and reflected wave) is Considering that this is three times the blood flow velocity, the reflected wave from the kidney will reach the cuff 200 again 0.4 seconds after the heart pumps blood.
- the distance from the heart to the ligament was assumed to be 60 cm, and the distance from the heart to the kidney, returning to the heart, branching into the brachial artery, and reaching the ligament was assumed to be 180 cm.
- the latter stroke is three times the former stroke, but if the propagation speed of the pulse wave is three times the blood flow velocity, the time it takes to move the former stroke at the blood flow velocity is The time it takes to travel the latter stroke with pulse wave transmission is equal. Therefore, in the above model, the Korotkoff sound observed at the shackle is obtained by superimposing the information of the blood flowing under the shackle with the information of the reflected wave from the kidney.
- the above discussion is based on the situation in which the ligament does not compress the blood vessels.
- the phenomenon occurs when the living body is not affected by the observation system at all. Therefore, if the cuff pressure is near the diastolic pressure DP (ie, the pressure that does not compress a blood vessel, as in state 4 in FIG. 4), the observed Korotkoff sounds include the kidneys in the model described above. It can be considered that the information of the reflected wave from is included.
- the blood flow velocity changes when blood vessels are compressed by a tying band. In other words, when pressure is applied to the blood vessel using an observing system called a shackle, the diameter of the blood vessel becomes thinner, and the blood flow velocity in that part increases.
- the systolic pressure SP, the diastolic pressure DP, the blood flow velocity, the pulse wave velocity, the distance from the heart to each part, etc. differ from individual patient to individual, so individual cuffs It is not possible to unambiguously determine the correspondence relationship between the Korotkoff sounds obtained at the pressure and the information on the reflected waves from any part superimposed thereon.
- the path to the upper arm of the reflected wave in the circulatory system is long in the order of shoulder, heart, lung, stomach, liver, kidney, thigh, and foot. This is common to all patients, and the lower the shackle pressure, the more the Korotkoff sound will contain information on the reflected waves from parts farther away from the upper arm.
- the pressure section from point D to point G in the graph of Fig. 3 is roughly associated with each part of the body in the order of shoulder, heart, lung, stomach, moon, kidney, thigh, and foot. It is possible Noh. Of course, it is also possible to make an optimal correspondence for each patient, taking into account the height of the patient and the measured blood pressure value.
- each Korotkoff sound detected at a plurality of pressures in the pressure section from point D to point G in the graph of FIG. 3 the individual spectral waveforms obtained by performing the Fourier transform are as follows. It can correspond to a predetermined part of the body. Then, each spectrum waveform contains information on the reflected wave from a specific site associated with each, and information on pain (tissue vibration) at that site is included. Will be. Therefore, if the results of the Fourier transform for each Korotkoff sound detected at these multiple pressures are presented in accordance with each specific part of the body, clues as to the location of the pain can be obtained. Can be given.
- FIG. 15 shows a display example on the screen of the display device 170.
- the spectrum waveform displayed on the shoulder shows the Fourier transform result of the Korotkoff sound obtained under a pressure close to point D in the graph of Fig. 3, and the spectrum waveform displayed on the periphery of the foot Shows the results of the Fourier transform of Korotkoff sounds obtained under a pressure close to point G in the graph of FIG.
- the spectrum waveform force s is not always obtained at all of these parts, and if the spectrum waveform is displayed for each part as described above, pain may occur. It is possible to estimate a rough site of occurrence.
- the force that displays the result of the Fourier transform of the Korotkoff sound as a spectrum waveform focuses on the fact that a pain signal can be recognized as the frequency distribution of Korotkoff sounds, and if the frequency distribution of Korotkoff sounds can be presented, what kind of display will be finally displayed It can take any form.
- a spectrum waveform it is possible to display the intensity value of a spectrum included in a specific frequency range as a histogram. No.
- Fig. 16 shows a display example using such a histogram. However, in that they can recognize the peak of intuitively scan vector it is better mosquito? Preferred display by spectral waveforms that have been described so far.
- the strap 200 shown in FIG. 1 is a basic form that can be used in the present invention, and any form of strap that can be used to measure Korotkoff sound can be used.
- the bandage 200 shown in FIG. 17 has a blood sac 2100 and a detection bag 220 as in the case of the bandage 200 shown in FIG. They are linked by 230.
- no conduit is provided directly in the ischemic sac 210.
- the conduit 250 extending to the main body 100 of the device is connected only to the detection bag 220 side, and pressure control of the strap and detection of Korotkoff sound are all performed through this conduit 250. Will be done.
- FIG. 18 shows a state in which the strap is attached to the upper arm.
- the CPU 130 built into the main unit 100 only performs pressure control and Korotkoff sound data collection processing, while the Fourier transform processing and spectrum waveform presentation processing are connected externally. It may be performed by a personal computer.
- the spectrum waveform can be displayed on a display screen for a personal computer, and can be printed from a printer connected to the personal computer.
- the device for detecting pain information according to the present invention does not necessarily have a function of accurately detecting pain felt by a patient, but presents information related to pain as a spectrum waveform. Because of this, it is possible to provide data that can be used as a source of diagnosis. In the past, information gathering on pain had to rely primarily on the patient's chief complaint or interview. By using the device according to the present invention, objective data regarding pain can be obtained simply by attaching a shackle to a patient's upper arm. Therefore, the device according to the present invention can be used for diagnosis in various medical fields.
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Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP99973691A EP1878382B1 (en) | 1999-11-12 | 1999-11-12 | Device for detecting pain sensation |
DE69942260T DE69942260D1 (de) | 1999-11-12 | 1999-11-12 | Vorrichtung zur ermittlung der schmerzempfindlichkeit |
JP2000601282A JP4633260B2 (ja) | 1999-11-12 | 1999-11-12 | 痛覚情報の検出装置 |
US09/581,482 US6231523B1 (en) | 1999-11-12 | 1999-11-12 | Pain information detecting device |
PCT/JP1999/006354 WO2001035822A1 (fr) | 1999-11-12 | 1999-11-12 | Dispositif pour la detection de la sensibilite a la douleur |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP1999/006354 WO2001035822A1 (fr) | 1999-11-12 | 1999-11-12 | Dispositif pour la detection de la sensibilite a la douleur |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001035822A1 true WO2001035822A1 (fr) | 2001-05-25 |
Family
ID=14237280
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1999/006354 WO2001035822A1 (fr) | 1999-11-12 | 1999-11-12 | Dispositif pour la detection de la sensibilite a la douleur |
Country Status (5)
Country | Link |
---|---|
US (1) | US6231523B1 (ja) |
EP (1) | EP1878382B1 (ja) |
JP (1) | JP4633260B2 (ja) |
DE (1) | DE69942260D1 (ja) |
WO (1) | WO2001035822A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006239430A (ja) * | 2005-03-04 | 2006-09-14 | Rossmax Internatl Ltd | リニアオシレート加圧式電子血圧計 |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6757558B2 (en) * | 2000-07-06 | 2004-06-29 | Algodyne, Ltd. | Objective pain measurement system and method |
JP2004135733A (ja) * | 2002-10-16 | 2004-05-13 | Nippon Colin Co Ltd | 生体情報測定装置 |
US8419646B2 (en) * | 2008-04-09 | 2013-04-16 | Asahi Kasei Kabushiki Kaisha | Blood pressure estimation apparatus and blood pressure estimation method |
US20150025335A1 (en) * | 2014-09-09 | 2015-01-22 | Lakshya JAIN | Method and system for monitoring pain of patients |
KR102355171B1 (ko) * | 2020-03-02 | 2022-01-26 | 고려대학교 산학협력단 | 고전압 미세전류 통증 진단기기 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1990014042A1 (en) * | 1989-05-19 | 1990-11-29 | University Of Victoria | Dolorimeter apparatus |
WO1991017699A1 (en) * | 1990-05-17 | 1991-11-28 | Mitsuei Tomita | Device for detecting and displaying information on blood circulation |
WO1994015526A1 (en) * | 1993-01-07 | 1994-07-21 | Seiko Epson Corporation | Pulse wave analyzer, and diagnosis apparatus using the same |
EP0956816A1 (en) | 1998-05-12 | 1999-11-17 | Colin Corporation | Blood pressure estimating apparatus |
EP1059064A2 (en) | 1999-06-09 | 2000-12-13 | Colin Corporation | Anesthetic-depth monitor apparatus |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3014219C2 (de) * | 1980-02-18 | 1982-12-09 | Asulab AG, 2502 Bienne | Blutdruckmeßeinrichtung mit einem Mikrofon |
JPH0638790B2 (ja) | 1989-05-19 | 1994-05-25 | 松田 正義 | 動脈伸展性測定装置 |
DE69028538T2 (de) | 1990-06-19 | 1997-02-06 | Mitsuei Tomita | Messvorrichtung für die blutströmungsgeschwindigkeit und des flussvolumens in der aorta |
US5423324A (en) | 1992-01-13 | 1995-06-13 | Tomita; Mitsuei | Apparatus for detecting and displaying blood circulatory information |
US5651369A (en) | 1992-01-13 | 1997-07-29 | Tomita; Mitsuei | Apparatus for detecting and displaying blood circulatory information |
JP3047712B2 (ja) * | 1993-11-19 | 2000-06-05 | セイコーエプソン株式会社 | 脈波診断装置 |
JP3040341B2 (ja) * | 1996-01-19 | 2000-05-15 | 吉伸 中村 | 脈診計 |
-
1999
- 1999-11-12 WO PCT/JP1999/006354 patent/WO2001035822A1/ja active Application Filing
- 1999-11-12 US US09/581,482 patent/US6231523B1/en not_active Expired - Fee Related
- 1999-11-12 DE DE69942260T patent/DE69942260D1/de not_active Expired - Lifetime
- 1999-11-12 EP EP99973691A patent/EP1878382B1/en not_active Expired - Lifetime
- 1999-11-12 JP JP2000601282A patent/JP4633260B2/ja not_active Expired - Fee Related
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1990014042A1 (en) * | 1989-05-19 | 1990-11-29 | University Of Victoria | Dolorimeter apparatus |
WO1991017699A1 (en) * | 1990-05-17 | 1991-11-28 | Mitsuei Tomita | Device for detecting and displaying information on blood circulation |
EP0720831A2 (en) | 1990-05-17 | 1996-07-10 | Mitsuei Tomita | Blood circulatory information display apparatus |
WO1994015526A1 (en) * | 1993-01-07 | 1994-07-21 | Seiko Epson Corporation | Pulse wave analyzer, and diagnosis apparatus using the same |
EP0630608A1 (en) | 1993-01-07 | 1994-12-28 | Seiko Epson Corporation | Pulse wave analyzer, and diagnosis apparatus using the same |
EP0956816A1 (en) | 1998-05-12 | 1999-11-17 | Colin Corporation | Blood pressure estimating apparatus |
EP1059064A2 (en) | 1999-06-09 | 2000-12-13 | Colin Corporation | Anesthetic-depth monitor apparatus |
Non-Patent Citations (1)
Title |
---|
See also references of EP1878382A4 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006239430A (ja) * | 2005-03-04 | 2006-09-14 | Rossmax Internatl Ltd | リニアオシレート加圧式電子血圧計 |
Also Published As
Publication number | Publication date |
---|---|
EP1878382B1 (en) | 2010-04-14 |
EP1878382A1 (en) | 2008-01-16 |
US6231523B1 (en) | 2001-05-15 |
JP4633260B2 (ja) | 2011-02-16 |
DE69942260D1 (de) | 2010-05-27 |
EP1878382A4 (en) | 2008-04-23 |
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