JP2012055354A - Diagnostic device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a diagnostic device that diagnoses a patient efficiently by auscultation or electrocardiogram in a short time.SOLUTION: The diagnosis device 10 includes a stethoscope 20, a cardiac potential detecting section 30, a control unit 40 and an external unit 50. The hearing detecting section 60, which is a chest piece to be brought into contact with the skin of a patient, has a first detecting section 62 for detecting comparatively high frequencies and a second detecting section 64 for detecting comparatively low frequencies. The cardiac potential detecting section 30 has electrodes 31-33 for detecting potential when the heart beats, and is provided on each of the first and second detecting sections 62, 64. The control unit 40 converts an cardiac potential signal detected by the cardiac potential detecting section 30 into a radio signal, and transmits the converted signal to the external unit 50. The external unit 50, which is a portable terminal device, has a front surface equipped with a display section 52 including a liquid panel, an operating section 54 having a plurality of operating buttons and a numeric key pad, and a plurality of patient selecting buttons 56 for reading the data for each patient.

Description

  The present invention relates to a diagnostic apparatus, and more particularly to a diagnostic apparatus configured to be able to make a diagnosis using a heart sound and an electrocardiogram.

  For example, when a doctor diagnoses a patient, the presence or absence of a physical abnormality is simply judged by listening to a body sound such as a heart sound accompanying the heartbeat of the patient and a breathing sound due to a lung using a stethoscope. . Then, X-ray examinations and electrocardiogram measurements are performed as appropriate according to the patient's inquiry and the result of diagnosis using a stethoscope.

  As a conventional diagnostic device, for example, there is a device that detects a body sound by attaching a microphone to a sound collection portion of a stethoscope and processes a sound signal output from a macrophone with high sound quality so that the body sound can be easily heard. (For example, refer to Patent Document 1).

JP 2003-588 A

  However, in the conventional diagnostic device, although the patient's symptoms can be diagnosed by listening to the body sound auscultated by the stethoscope with high sound quality, if an abnormality is found in the heart sound, an electrocardiogram measuring device is installed. The patient is moved to another room, and it is confirmed whether there is any abnormality in the heart valve operation of the patient by looking at the electrocardiogram of the patient measured by the electrocardiogram measuring device. For this reason, when an abnormality is suspected in the patient's heart, the electrocardiogram is measured without judging only the heart sound, and it takes time to diagnose the heart. Further, when an abnormality is confirmed also by an electrocardiogram, a diagnosis for identifying the cause of the abnormality of the heart is performed by performing X-ray photography and CT (Computed Tomography) scan.

  In addition, when a doctor determines whether or not measurement with a more accurate electrocardiogram measuring device such as a 12-lead electrocardiogram, an intraesophageal electrocardiogram, or a Holter electrocardiograph is necessary, the doctor is based only on a normal stethoscope heart sound In many cases, it is difficult to make a judgment, and there is a problem in that it is necessary to carry out a highly accurate inspection for safety.

  Therefore, in view of the above circumstances, an object of the present invention is to provide a diagnostic apparatus that solves the above problems.

In order to solve the above problems, the present invention has the following means.
(1) The present invention includes an audio detection unit that detects body sounds, a tube having one end communicating with the audio detection unit, and a pair of ear canals branched from the other end of the tube. A stethoscope for auscultating the body sound from the end of the ear canal;
An electrocardiogram detection unit that is provided in the hearing sound detection unit and detects a potential associated with the heartbeat;
A control unit which is provided in the stethoscope and converts the electric potential detected by the electrocardiogram detection unit into a radio signal and transmits it;
An external unit that is provided separately from the stethoscope, receives a radio signal transmitted by the control unit, and displays a waveform diagram based on the radio signal;
It is characterized by having.
(2) The electrocardiogram detection unit and the control unit according to the present invention are provided on an attachment base that is detachably attached to the hearing sound detection unit.
(3) The control unit of the present invention comprises:
A wireless transmission unit that converts the potential detected by the electrocardiogram detection unit into a wireless signal and transmits the wireless signal;
A battery for supplying power to the wireless transmitter;
It is characterized by having.
(4) The external unit of the present invention is a portable terminal device,
A wireless receiver for receiving a wireless signal transmitted by the wireless transmitter;
A storage unit for storing a change in potential from the wireless reception unit;
A display for displaying a waveform diagram based on the change in the potential;
It is characterized by having.
(5) The hearing sound detection unit of the present invention,
A first detector having a diaphragm for detecting a high frequency of the body sounds;
A second detection part having a rubber material at a peripheral part for detecting a low frequency among the body sounds;
The first detection unit and the second detection unit are provided to be switchable,
The electrocardiogram detection unit is provided in each of the first detection unit and the second detection unit.
(6) The present invention comprises an auscultation unit having an aural sound detection unit for detecting body sounds;
A terminal device that is provided separately from the auscultation unit, receives a radio signal transmitted by the auscultation unit, and displays a waveform diagram based on the radio signal and a heart sound signal;
The auscultation unit includes an electrocardiogram detection unit that detects a potential associated with a heart beat, a microphone that detects a heart sound, a potential detected by the electrocardiogram detection unit, and a heart sound signal detected by the microphone as a radio signal And a communication means for transmitting to the terminal device.
(7) The auscultation unit of the present invention comprises:
A storage unit for storing a potential detected by the electrocardiogram detection unit and a heart sound signal detected by the microphone;
A battery for supplying power to the wireless transmitter;
It is characterized by having.
(8) The terminal device according to the present invention includes:
A communication unit having a wireless reception unit for receiving a wireless signal of a potential and a heart sound signal transmitted by the wireless transmission unit of the auscultation unit;
A storage unit for storing a change in potential and a heart sound signal from the communication unit;
A display unit for displaying a waveform diagram based on a change in potential detected by the electrocardiogram detection unit and a heart sound signal detected by the microphone;
It is characterized by having.

  According to the present invention, when a potential associated with the heartbeat is transmitted as a radio signal from a control unit provided in a stethoscope, a waveform diagram based on the radio signal in an external unit provided separately from the stethoscope. Is displayed, it is possible to check the electrocardiogram while listening to the patient's heart sounds with a stethoscope. This improves diagnostic efficiency and shortens the diagnosis time, and helps to determine whether a more accurate examination is necessary. It becomes possible to provide information.

  Further, according to the present invention, when a potential associated with the heartbeat is transmitted as a radio signal from the control unit provided in the auscultation unit, the external unit provided separately from the auscultation unit is based on the radio signal. Since a waveform diagram is displayed, for example, a remote island or mountainous patient without a doctor can transmit the heart sound and electrocardiogram of the patient detected by the auscultation unit to a remote doctor to diagnose the remote doctor. In addition, it is possible to increase the diagnostic efficiency by enabling an auxiliary operation by a patient or an attendant who is not familiar with the operation of the medical device.

It is a perspective view which shows one Example of the diagnostic apparatus by this invention. It is a block diagram which shows the system configuration | structure of a diagnostic apparatus. It is a longitudinal cross-sectional view of the sound detection part which shows the state which made the diaphragm of the 1st detection part contact the patient's skin. It is a bottom view which shows arrangement | positioning of the diaphragm of a hearing sound detection part, and an electrode. It is a top view which shows arrangement | positioning of a rubber member and an electrode in the peripheral edge part of an auditory sound detection part. It is a longitudinal cross-sectional view of the sound detection part which shows the state which made the rubber member of a sound detection part contact the patient's skin. It is a cross-sectional view which shows the detection point at the time of making a hearing sound detection part contact the circumference | surroundings of a chest. It is a figure which shows the waveform displayed on the display part of an external unit. It is a figure which shows the condition which a doctor diagnoses using the diagnostic apparatus of this invention. 10 is a block diagram showing a system configuration of Modification 1. FIG. It is a longitudinal cross-sectional view which shows the auscultation unit of the modification 1. It is a bottom view which shows the end surface of the auscultation unit of the modification 1. It is a figure which shows the waveform of the signal detected by the auscultation unit of the modification 1. It is a figure which shows typically the condition which a doctor diagnoses using the diagnostic apparatus of the modification 1. It is a perspective view which shows the state which separated the auscultation unit of the modification 2 from the stethoscope. It is the top view which looked at the auscultation unit of the modification 2 from upper direction. It is the bottom view which looked at the auscultation unit of modification 2 from the lower part. It is a perspective view which shows the state with which the auscultation unit of the modification 2 was mounted | worn with the stethoscope. It is a top view which shows the state which mounted | wore the stethoscope with the auscultation unit of the modification 2. It is a longitudinal cross-sectional view which follows the AA line in FIG. It is a longitudinal cross-sectional view which follows the BB line in FIG. It is a perspective view which shows the state which isolate | separated the electrocardiogram unit of the modification 3 from the stethoscope. It is a longitudinal cross-sectional view which shows the principal part of the auscultation unit of the modification 3 in a cross section.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

[Configuration of diagnostic device]
FIG. 1 is a perspective view showing an embodiment of a diagnostic apparatus according to the present invention. As shown in FIG. 1, the diagnostic apparatus 10 includes a stethoscope 20, an electrocardiogram detection unit 30, a control unit 40, and an external unit 50. The stethoscope 20 includes an acoustic detection unit 60, a tube 70 having one end communicating with the acoustic detection unit 60, and a pair of ear tubes 72 and 74 branched from the other end of the tube 70. The doctor can listen to the detection sound of the part touched by the sound detection unit 60 by inserting the ear tips 76 and 78 attached to the ends of the ear tubes 72 and 74 into the ear canal.

  The auditory sound detection unit 60 is a chest piece that detects body sounds that propagate through the body in contact with the patient's skin, and includes a first detection unit 62 that detects a relatively high frequency (for example, 200 Hz or more), And a second detection unit 64 that detects a low frequency (for example, 200 Hz or less).

  The electrocardiogram detection unit 30 includes electrodes 31 to 33 for detecting a potential associated with the pulsation of the heart, and is provided in each of the first and second detection units 62 and 64. The electrocardiogram detection unit 30 of the present embodiment measures a potential vector in each direction associated with the heart beat by a bipolar induction method described later, and outputs electrocardiogram waveform data.

  The control unit 40 is provided in an intermediate portion of a communication tube 79 that communicates a pair of branched ear tubes 72 and 74. The control unit 40 is electrically connected to the electrodes 31 to 33 of the electrocardiogram detection unit 30 via the electric wire 80, and as described later, the electrocardiogram signal detected by the electrocardiogram detection unit 30 is a radio signal. To the external unit 50.

  The external unit 50 is a terminal device that can be carried in a jacket pocket or the like. The external unit 50 includes a display unit 52 having a liquid crystal panel on the front surface, an operation unit 54 having a plurality of operation buttons and numeric keys, and data for each patient. A plurality (eight in FIG. 1) of patient selection buttons 56 are arranged.

  Accordingly, the doctor makes the waveform of the electrocardiogram signal detected by the electrocardiogram detection unit 30 while making the auscultation detector 60 of the stethoscope 20 contact the patient and auscultating the patient's body sounds (including heart sounds and breathing sounds). By displaying on the display unit 52 of the external unit 50, it is possible to accurately diagnose the patient's condition (heart operating state). Even if a close examination is performed based on the result of diagnosis, the state of the patient's heart can be estimated from the auscultation by the doctor and the electrocardiogram displayed on the display unit 52 of the external unit 50. In addition to being able to perform more accurately, it is possible to shorten the time required for precision inspection by specifying in advance what kind of precision inspection should be performed and to what degree of precision, and more precise inspection precision. It can also be increased.

The external unit 50 is composed of, for example, a terminal device on which a relatively large liquid crystal panel is mounted, and can display the waveform of the electrocardiogram in detail. Further, the external unit 50 stores electrocardiogram waveform data in time series. For example, if the patient selection button 56 is operated, the electrocardiogram 30 minutes before, the electrocardiogram 20 minutes before, and 10 minutes before the same patient. The electrocardiogram can be sequentially displayed on the display unit 52. The doctor can make a diagnosis by referring to the waveform data of the electrocardiogram by referring to the waveform data of the electrocardiogram stored in the external unit 50 in association with the change of the patient's condition. Therefore, the doctor can check the changes in the patient's heart condition on the spot by comparing the current ECG waveform and the ECG based on the past waveform data. It becomes possible to diagnose.
[System configuration of diagnostic equipment]
FIG. 2 is a block diagram showing the system configuration of the diagnostic apparatus. As shown in FIG. 2, the control unit 40 includes a switching operation unit 90, a control circuit 100, a wireless transmission unit 110, and a battery 120. The switching operation unit 90 selects one of the first and second detection units 62 and 64 by inverting the listening sound detection unit 60.

  Moreover, the 1st, 2nd detection parts 62 and 64 have the 1st, 2nd electrocardiogram detection parts 130 and 140 formed with the electrodes 31-33, respectively. When the control unit 40 selects one of the first and second detection units 62 and 64 by inverting the listening sound detection unit 60, the first and second electrocardiogram detection units 130 and 140 are selected. The electrocardiogram signals from the electrodes 31 to 33 provided on the selected one of the electrodes are read.

  For example, the control circuit 100 reads the electrocardiogram signals detected by the first and second detection units 62 and 64 at a sampling frequency of 1 KHz, and performs waveform shaping processing to remove noise components included in the electrocardiogram signals. The waveform data obtained in this way is output to the wireless transmission unit 110. The wireless transmission unit 110 converts the waveform data generated by the control circuit 100 into a wireless signal having a predetermined frequency and transmits it.

  The battery 120 is made of a rechargeable battery, and is charged by a charger provided on a mounting table or the like that is mounted when the stethoscope 20 is not used, for example.

  The external unit 50 can communicate with the control unit 40 by radio signals, and includes a radio reception unit 150, a storage unit 160, and a battery 170 in addition to the display unit 52. The wireless reception unit 150 receives a wireless signal from the control unit 40, demodulates the electrocardiogram signal, and outputs it to the storage unit 160. The storage unit 160 stores a database 162 that stores time-series together with the date and time when the waveform data of the electrocardiogram signal input from the wireless reception unit 150 is measured. In this database 162, waveform data of electrocardiogram signals for each patient is stored in order of measurement time, and waveform data of electrocardiogram signals for each patient can be read in the order of measurement.

Therefore, the data stored immediately before the data stored in the database 162 of the storage unit 160 can be viewed first. When the data is specified in the new order from the saved list displayed on the display unit 52, the data of the same patient is measured. It can be displayed in order of time. When a plurality of patients are continuously diagnosed, by operating the patient selection button 56 corresponding to the patient among the plurality of patient selection buttons 56 of the external unit 50, the waveform data of the electrocardiogram signal of the patient Can be displayed on the display unit 52.
[Configuration of audible sound detection unit]
FIG. 3A is a longitudinal cross-sectional view of the sound detection unit showing a state in which the diaphragm of the first detection unit is in contact with the patient's skin. As shown in FIG. 3A, the sound detection unit 60 is a first detection unit that detects a relatively high frequency band (for example, 200 Hz or more) at one end (the lower surface side of FIG. 3A) of the hollow body 66. 62 is provided, and a second detection unit 64 that detects a relatively low frequency band (for example, 200 Hz or less) is provided at the other end of the main body 66 (upper end side in FIG. 3A).

  The first detection unit 62 is formed in a tapered shape, and a diaphragm 63 made of a thin metal plate or a synthetic resin thin plate is fixed to the opening 62a. The diaphragm 63 is formed in a disk shape, and the outer peripheral edge is held by the inner peripheral edge 62 b of the first detection unit 62 by caulking.

  The second detection part 64 is formed in a hemispherical dome shape, and the peripheral edge part 64b is covered with a rubber member 65 having elasticity. The opening 64 a of the second detection unit 64 communicates with the opening 62 a of the first detection unit 62 through a through hole 67 that penetrates the constricted portion 66 a of the main body 66 in the vertical direction.

  A switching member 68 for switching the detection direction of the listening sound is inserted in the middle portion of the through hole 67 from the horizontal direction so as to intersect. The switching member 68 has an acoustic hole 69 that forms an acoustic propagation path on the outer periphery of the hollow pipe.

  The sound detection unit 60 is configured to be able to reverse the detection direction from the first detection unit 62 to the second detection unit 64 by rotating in the vertical direction around the switching member 68 as a rotation center. Thus, the body sound of the patient propagates to the tube 70 and the ear tubes 72 and 74 of the stethoscope 20 through the sound hole 69 of the switching member 68.

  FIG. 3B is a bottom view showing the arrangement of diaphragms and electrodes of the sound detection unit. As shown in FIG. 3B, the diaphragm 63 fixed to the end of the first detection unit 62 is a diaphragm that vibrates due to the propagation of the body sound of the patient by contacting the patient's skin. Among them, the high frequency band is amplified to facilitate auscultation. Further, electrodes 31 to 33 constituting the first electrocardiogram detection unit 130 are provided on the end surface (exposed surface) of the diaphragm 63 at intervals of 120 degrees in the circumferential direction.

  The electrodes 31 to 33 of the first electrocardiogram detection unit 130 are made of a conductive material having a low electrical resistance such as silver (Ag) or silver chloride (AgCl), and one is GND (ground). The remaining two are detection terminals for detecting a potential difference due to the induced potential. Each of the electrodes 31 to 33 is connected to the control unit 40 via a plurality of electric wires 80.

  FIG. 3C is a plan view showing the arrangement of the rubber member and the electrode at the peripheral edge of the hearing detection unit. As shown in FIG. 3C, the second detection unit 64 is formed by fixing an annular rubber member 65 to a peripheral edge portion 64b on the lower end side. The rubber member 65 has a semicircular end, and is formed so as to be in close contact with the patient's skin. Since the rubber member 65 has elasticity, it easily absorbs a high frequency band of body sounds and makes it easy to auscultate a low frequency band of body sounds. Moreover, the electrodes 31-33 which comprise the 2nd electrocardiogram detection part 140 are provided in the edge part (periphery part) of the rubber member 65 at 120 degree intervals in the circumferential direction.

  The electrodes 31 to 33 of the second electrocardiogram detection unit 140 are made of, for example, a conductive material having a low electrical resistance such as silver (Ag) or silver chloride (AgCl), and one is GND (ground). The remaining two are detection terminals for detecting a potential difference due to the induced potential. Each of the electrodes 31 to 33 is connected to the control unit 40 via a plurality of electric wires 80.

  Each of the electrodes 31 to 33 of the first and second electrocardiogram detection units 130 and 140 has a low electrical resistance other than silver (Ag) or silver chloride (AgCl) and is resistant to corrosion (for example, gold ( Au)).

FIG. 3D is a longitudinal sectional view of the sound detection unit showing a state where the rubber member of the sound detection unit is in contact with the patient's skin. As shown in FIG. 3D, when the second detection unit 64 listens to a low frequency band of the body sound, the listening member detection unit 60 is rotated 180 degrees up and down with the switching member 68 as the center of rotation. Let Thereby, the 2nd detection part 64 switches to the state located in the lower side, and the sound hole 69 of the switching member 68 is connected to the opening 64a. Therefore, the body sound detected by the second detection unit 64 propagates to the tube 70 and the ear tubes 72 and 74 of the stethoscope 20 through the sound hole 69.
[Detection of ECG signal]
FIG. 4 is a cross-sectional view showing detection points when the hearing detection unit is brought into contact with the periphery of the chest. As shown in FIG. 4, the first detection unit 62 or the second detection unit 64 of the sound detection unit 60 is brought into contact with the chest of the patient to listen to the body sound, and the detection points V1 to V6 are first, By contacting the electrodes 31 to 33 of the second electrocardiogram detection units 130 and 140, an electrocardiogram signal accompanying the pulsation of the heart can be detected. In addition, since the electric potential vector accompanying heart beat changes with each detection point, the electric potential difference measured also differs, respectively.

  The electrocardiogram signal (V1 induction signal) at the detection point V1 is an induction signal for viewing the heart mainly from the right ventricular side of the heart.

  The electrocardiogram signal (V2 induction signal) at the detection point V2 is an induction signal for viewing the heart from the right ventricle and the left ventricular front wall side.

  The electrocardiogram signal (V3 induction signal) at the detection point V3 is an induction signal for viewing the heart from the ventricular septum and the left anterior wall of the heart.

  The electrocardiogram signal (V4 lead signal) at the detection point V4 is a lead signal for viewing the ventricular septum and the left ventricular anterior wall direction of the heart.

  The electrocardiogram signal (V5 induction signal) at the detection point V5 is an induction signal for looking at the anterior and left ventricular walls of the heart.

  The electrocardiogram signal (V6 lead signal) at the detection point V6 is a lead signal for looking at the left ventricular side wall of the heart.

  Thus, by sequentially changing the contact position of the listening sound detection unit 60 to each of the detection points V1 to V6, an electrocardiogram signal at each point can be measured.

  FIG. 5 is a diagram showing waveforms displayed on the display unit of the external unit. As shown in FIG. 5, the display unit 52 of the external unit 50 displays, for example, the latest measurement data in parallel in order from the top in the waveform diagram of the electrocardiogram signal detected at each detection point V1 to V6. Thereby, the doctor confirms the waveform of the electrocardiogram signal displayed on the display unit 52 of the external unit 50 while auscultating the patient's body sound (heart sound) with the stethoscope 20 to check the operation state of the patient's heart. Diagnosis becomes possible.

Moreover, from the waveform of the electrocardiogram signal displayed on the display unit 52 of the external unit 50, for example, it is diagnosed whether there is any abnormality in the state of the blood ejection operation in the systole or the blood suction operation in the diastole. it can. In addition, when there is an arrhythmia, its state, tachycardia or bradycardia state, etc. can be confirmed from the waveform.
[Usage example of diagnostic device]
FIG. 6 is a diagram showing a situation where a doctor makes a diagnosis using the diagnostic apparatus of the present invention. As shown in FIG. 6, the doctor X touches the chest of the patient Y with the first detection unit 62 or the second detection unit 64 of the audio detection unit 60 and listens to the patient Y's breathing sound and heart sound. The waveform of the electrocardiogram signal displayed on the display unit 52 of the external unit 50 is confirmed to diagnose the operating state of the patient's heart. In this case, since the doctor X can move while holding the stethoscope 20 and the external unit 50, the operation state of the heart of the patient Y can be determined even in a place other than the hospital examination room (for example, a disaster site). It becomes possible to diagnose accurately.

  In addition, since diagnosis can be performed while confirming an electrocardiogram in the conventional diagnosis based on body sounds such as heart sounds and breathing sounds, it is possible to more accurately determine whether or not a precise electrocardiogram inspection is required by 12 leads or the like. It becomes like this.

  Furthermore, at the disaster site, etc., the diagnosis efficiency by the doctor X can be improved and the diagnosis time can be shortened, and even when diagnosing a large number of patients Y at the time of a disaster, it is possible to easily diagnose the heart state of each patient. Therefore, it becomes possible to select treatment priorities (triage) according to the heart conditions of a large number of patients at the time of a disaster.

  Next, a modified example will be described.

[System Configuration of Modification 1]
FIG. 7 is a block diagram showing a system configuration of the first modification. As shown in FIG. 7, the diagnostic apparatus 200 according to the first modified example transmits / receives image data via the Internet 210 so that, for example, a patient in a remote island or a mountainous area is diagnosed by a doctor of a remote hospital. It is a diagnostic system that makes it possible to receive.

  The diagnostic apparatus 200 includes an auscultation unit 220 used on the patient side, and a doctor-side terminal apparatus 230 installed in a remote hospital or the like. As will be described later, the auscultation unit 220 is small and portable that can be operated by the patient, and includes an electrocardiogram detection unit 240, a microphone 250, a communication device 260, a memory (RAM) 270, and a control unit 280. And a battery 290. The communication device 260 converts the electrocardiogram signal detected by the electrocardiogram detection unit 240 and the heart sound signal detected by the microphone 250 into a radio signal, and transmits the radio signal to the Internet 210 via a communication device such as a router. Then, the electrocardiogram signal detected by the electrocardiogram detection unit 240 and the heart sound signal detected by the microphone 250 are transmitted via the Internet 210 to the terminal device 230 installed at a remote place.

  The doctor-side terminal device 230 is, for example, a personal computer, and includes a communication device 300, a control circuit 310, a display device 320, a storage unit 330, and an input unit 340. The communication device 300 is provided so as to be connectable to the Internet 210 via a public line. The doctor side terminal device 230 stores the waveform data of the electrocardiogram signal detected by the electrocardiogram detection unit 240 transmitted from the auscultation unit 220 and the heart sound signal detected by the microphone 250 in the storage unit 330, and also the display device 320.

The input unit 340 is a keyboard, a mouse, and the like, and is transmitted from any data among the patient data stored in the storage unit 330 or the currently connected auscultation unit 220 when operated by a doctor. Data of the electrocardiogram signal and the heart sound signal can be displayed on the display device 320.
[Auscultation unit of modification 1]
FIG. 8 is a longitudinal sectional view showing an auscultation unit according to the first modification. FIG. 9 is a bottom view showing an end face of the auscultation unit of the first modification. As shown in FIGS. 8 and 9, the auscultation unit 220 is provided with a bell-type detection unit 224 at the lower part of the main body 222. In the bell-shaped detection unit 224, an annular rubber member 65 is fixed to the lower end peripheral portion 224a of the main body 222.

  Moreover, the electrodes 31-33 which comprise the electrocardiogram detection part 240 are provided in the outer periphery (periphery part) of the rubber member 65 by the 120 degree space | interval in the circumferential direction.

  A microphone 250 is provided at the center of the opening 240 a of the electrocardiogram detection unit 240. The microphone 250 detects the body sounds (including respiratory sounds and heart sounds) transmitted through the patient's skin while the electrodes 31 to 33 of the electrocardiogram detection unit 240 are in contact with the patient's skin. It is provided to output a corresponding signal.

  The auscultation unit 220 has a circular grip 226 formed on the upper portion of the main body 222 so that the auscultation unit 220 can be easily gripped. A communication device 260, a memory 270, a control unit 280, and a battery 290 are housed inside the grip unit 226.

FIG. 10 is a diagram illustrating a waveform of a signal detected by the auscultation unit according to the first modification. As shown in FIG. 10, the electrocardiogram signal detected by the electrocardiogram detection unit 240 of the auscultation unit 220 and the heart sound and heart noise signals detected by the microphone 250 are waveform-shaped by the control unit 280, and the communication device 260. Are transmitted from the auscultation unit 220 on the display device 320 of the doctor-side terminal device 230 provided at a remote place. Accordingly, a doctor at a remote location can diagnose the operating state of the patient's heart from the waveform of the electrocardiogram signal, heart sound, and heart noise displayed on the display device 320 of the doctor-side terminal device 230.
[Usage example of modification 1]
FIG. 11 is a diagram schematically illustrating a situation in which a doctor makes a diagnosis using the diagnostic apparatus according to the first modification. As shown in FIG. 11, the patient Y sits in front of the patient-side terminal device 400 and grips the grip 226 of the auscultation unit 220 to bring the electrocardiogram detection unit 240 into contact with his / her chest. In this modification, the waveform data of the electrocardiogram signal, heart sound, and heart noise transmitted from the auscultation unit 220 is temporarily stored in the storage unit of the patient terminal device 400.

  The patient-side terminal device 400 has the same configuration as the doctor-side terminal device 230, and includes a communication device 410, a display device 420, an input unit 430, and a CCD camera 440. Then, the patient side terminal device 400 transmits the electrocardiographic signal, heart sound, and heart noise waveform data transmitted from the auscultation unit 220 to the doctor side terminal device 230 via the communication device 410 and the public line or the Internet. The patient Y wears a headphone 450 with a microphone on the head so that the patient Y can talk with the doctor X.

  A CCD camera 350 is also provided in the display device 320 of the doctor-side terminal device 230. Then, the headphone 360 with a microphone is attached to the head so that the doctor X can also talk with the patient Y. In addition, the image of the patient Y captured by the CCD camera 440 is displayed on the display device 320 of the doctor-side terminal device 230 in real time. At the same time, an image of the doctor X captured by the CCD camera 350 is displayed in real time on the display device 420 of the patient side terminal device 400.

  In this way, the doctor X and the patient Y can talk with each other while looking at each other's face displayed on the display devices 320 and 420. Therefore, the doctor X can make an inquiry to the patient Y at a remote place using the headphones 360 and 450 with microphones, and can see facial expressions and facial expressions by looking at the images of the patient Y displayed on the display devices 320 and 420. The contact position of the auscultation unit 220 can be indicated.

  In addition, when the patient Y cannot talk to the doctor X, a family member or an acquaintance who seems to be attached to the patient Y can operate the auscultation unit 220 instead and ask the doctor X a question.

  Therefore, even if the doctor X and the patient Y are separated from each other, the doctor X can perform an inquiry and auscultation with respect to the patient Y, and the doctor X can transmit the electrocardiogram signal, heart sound, and heart noise transmitted from the auscultation unit 220. The condition of the patient Y can be diagnosed using the waveform data.

[Configuration of Modification 2]
FIG. 12 is a perspective view showing a state in which the electrocardiogram unit of Modification 2 is separated from the stethoscope. As shown in FIG. 12, the electrocardiogram unit 500 of the second modification is detachably attached to a sound detection unit 510 of a stethoscope that is normally used. The electrocardiogram unit 500 includes an attachment base 520 and a control unit 530 mounted on the attachment base 520.

  The control unit 530 includes the control circuit 100, the wireless transmission unit 110, and the battery 120, similarly to the control unit 40 illustrated in FIG. The control circuit 100 and the wireless transmission unit 110 are a package in which each electronic component composed of an IC chip is mounted on a flexible substrate. As the battery 120, a thin, small and light button type battery (mercury battery) or the like is used.

  FIG. 13A is a plan view of the auscultation unit of Modification 2 as viewed from above. As shown in FIG. 13A, the mounting base 520 of the electrocardiogram unit 500 is molded from a flexible resin material such as silicon. The conical portion 522 and the horizontal direction from the outer peripheral side of the conical portion 522 are shown. The electrocardiogram detection part 524 which protrudes in the figure and the slit 526 are provided.

  The slit 526 extends in the vertical direction so as to follow the upper conical portion 522 and the electrocardiogram detection portion 524. Further, the slits 526 can adjust the circumferential interval so that the slits 526 are widened in the circumferential direction when the slits 526 are attached to the sound detection unit 510 of the stethoscope. In addition, after the mounting base 520 of the electrocardiographic unit 500 is mounted on the sound detection unit 510 of the stethoscope, the slit of the slit 526 is restored to the original narrow state due to the elasticity of the mounting base 520 itself. The state of the shape portion 522 is in contact with the conical portion of the listening sound detection portion 510.

  A control unit 530 is mounted on the upper surface side of the conical portion 522. The control unit 530 of this embodiment is divided into two packages depending on the installation space. The control circuit 100 and the IC chip of the wireless transmission unit 110 are mounted on one package, and the battery is mounted on the other package. 120 is stored.

  Further, a triangular mark 527 is provided on the upper surface side of the conical portion 522 as a mark indicating the vector direction of the electrocardiogram signal measured by the electrode position. In a state where the electrocardiogram unit 500 is mounted on the sound detection unit 510 of the stethoscope, the direction of the electrode 32 can be known by the triangular mark 527.

  FIG. 13B is a bottom view of the auscultation unit of Modification 2 as viewed from below. As shown in FIG. 13B, an electrocardiogram detection unit 524 is provided on the outer peripheral edge of the mounting base 520. In the electrocardiogram detection unit 524, electrodes 31 to 33 for detecting a potential associated with the pulsation of the heart are arranged at intervals of 120 °, as in the above-described embodiment. One of the electrodes 31 to 33 is GND (ground), and the remaining two are detection terminals for detecting a potential difference due to the induced potential. Each of the electrodes 31 to 33 is connected to the control unit 530 via a plurality of electric wires 540 formed on the lower surface side of the mounting base 520.

  In addition, each of the electrodes 31 to 33 of the electrocardiogram detection unit 524 is provided on the outer peripheral edge formed to be wide, and is provided so as to secure an installation area. The electrodes 31 to 33 and the plurality of electric wires 540 may be formed on the lower surface side of the mounting base 520 by plating or the like. A non-slip sheet 550 that adheres closely to the surface of the sound detection unit 510 is attached to the lower surface of the conical portion 522 of the mounting base 520.

  FIG. 14 is a perspective view showing a state in which the electrocardiogram unit of Modification 2 is mounted on a stethoscope. As shown in FIG. 14, in a state where the electrocardiogram unit 500 is mounted on the sound detection unit 510 of the stethoscope, the tube connection part in which both edges of the slit 526 of the mounting base 520 protrude laterally from the sound detection unit 510. 512 is sandwiched. The tube connecting portion 512 is for connecting the tube 70, but also functions as a stopper for preventing the electrocardiogram unit 500 from rotating.

  In addition, the large-diameter portion 514 provided on the upper part of the sound detection unit 510 of the stethoscope functions as a gripping unit that is held by the doctor when the sound detection unit 510 is brought into contact with the patient.

  FIG. 15 is a plan view showing a state in which the auscultation unit according to the second modification is attached to the stethoscope. As shown in FIG. 15, when the electrocardiogram unit 500 is attached to the sound detection unit 510 of the stethoscope, a triangular mark 527 indicating the vector direction of the electrocardiogram signal provided on the upper surface side of the conical part 522 is provided. The mounting base 520 is rotated approximately 180 degrees so as to be positioned in the extending direction of the tube 70 (doctor side). Thus, when viewed from the doctor, the mark 527 is positioned on the near side (doctor side), and the electrode 32 provided at the position corresponding to the mark 527 is positioned on the tube 70 side that is the vector direction of the electrocardiogram signal. You can see that

  FIG. 16A is a longitudinal sectional view taken along line AA in FIG. FIG. 16B is a longitudinal sectional view taken along line BB in FIG. As shown in FIGS. 16A and 16B, the sound detection unit 510 is a chestpiece of a stethoscope that is normally used, and a diaphragm 63 is fixed to the bottom opening by caulking. In addition, a sound transmission path 516 for transmitting the vibration sound of the diaphragm 63 that vibrates due to the propagation of body sound is formed inside the listening sound detection unit 510.

  When the electrocardiogram unit 500 is attached to the sound detection unit 510 of the stethoscope, the slit 526 is formed below the tube connection part 512 due to the elasticity of the mounting base 520, so that the electrocardiogram unit 500 is connected to the sound detection unit 510. Can be rotated in the circumferential direction. Further, since the anti-slip sheet 550 attached to the lower surface side of the conical portion 522 of the mounting base 520 has a high friction coefficient on the surface, the anti-slip sheet 550 is maintained in contact with the inclined surface of the hearing detection unit 510.

  Further, the outer peripheral portion of the diaphragm 560 is held at the lower peripheral edge portion of the listening sound detection unit 510. The lower surface of the diaphragm 560 is formed so as to be positioned below the electrocardiogram detection unit 524, and is provided so as to be positioned above the lower surface side contact surfaces of the electrodes 31 to 33.

  Moreover, since each electrode 31-33 provided in the outer periphery part of the attachment base 520 protrudes below from the lower surface of the diaphragm 560, while performing auscultation, while making the diaphragm 560 contact the patient's skin, the patient's skin It is possible to detect the electric potential accompanying the heartbeat by contacting the skin. The electrocardiographic signals measured by the electrodes 31 to 33 are converted into radio signals by the control unit 530 and transmitted to the external unit 50 in the same manner as the control unit 40 described above. Therefore, the doctor contacts the patient with the sound detection unit 510 of the stethoscope and auscultates the patient's body sounds (including heart sounds and breathing sounds) while the waveform of the electrocardiogram signals detected by the electrodes 31 to 33 is displayed on the external unit. Thus, the patient's condition (heart operating state) can be accurately diagnosed by being displayed on the 50 display units 52. In addition, even if a close examination is performed based on the result of diagnosis, since the state of the patient's heart can be inferred from the auscultation by the doctor and the electrocardiogram displayed on the display unit 52 of the external unit 50, a close examination of the heart should be performed. By specifying the location in advance, it is possible to shorten the time required for the precision inspection and to further increase the precision of the precision inspection.

  In this way, by attaching the electrocardiogram unit 500 of the modified example 2 to the sound detection unit 510 of the stethoscope, an existing stethoscope measures the electrocardiogram signal while auscultating the patient's body sound, The state of the heart of the patient can be diagnosed by the electrocardiogram displayed on the display unit 52.

[Configuration of Modification 3]
FIG. 17A is a perspective view showing a state in which the electrocardiogram unit of Modification 3 is separated from the stethoscope. FIG. 17B is a longitudinal cross-sectional view showing the main part of the auscultation unit of Modification 3 in cross section.

  As shown in FIGS. 17A and 17B, the electrocardiogram unit 600 of the third modification is detachably attached to the sound detection unit 510 of a stethoscope that is normally used. The electrocardiogram unit 600 includes an attachment base 620 and a control unit 630 mounted on the attachment base 620. The method of attaching the electrocardiogram unit 600 to the listening sound detection unit 510 is performed by the same operation as that of the second modification described above.

  The control unit 630 includes the control circuit 100, the wireless transmission unit 110, and the battery 120, similarly to the control unit 40 (see FIG. 2) described above.

  The attachment base 620 includes an attachment part 622 to which the control unit 630 is attached, a fitting step part 624 that fits to the outer peripheral edge part 517 of the sound detection part 510, and a flange part 626 in which electrodes 31 to 33 are arranged on the lower surface side. And have. Further, the mounting base 620 is formed in a substantially annular shape, and is provided with a slit 640 on the opposite side (180-degree direction) from the mounting portion 622 that protrudes inclined toward the inner peripheral side.

  Since the mounting portion 622 is provided in a trapezoidal shape not in the entire circumference of the mounting base 620 but in the middle portion of the inner periphery, the mounting base 620 is almost open on the inner peripheral side. Therefore, when the electrocardiogram unit 600 is attached to the sound detection unit 510, the fitting step 624 is fitted to the outer peripheral edge 517 of the sound detection unit 510 by a relatively simple operation such as increasing the width of the slit 640. be able to.

  When the electrocardiographic unit 600 is attached to the sound detection unit 510, the fitting step 624 is fitted to the outer peripheral edge 517 of the sound detection unit 510 with the slit 640 facing the portion without the tube 70, Thereafter, the mounting base 620 is rotated in the circumferential direction so that the control unit 630 is adjusted to be positioned below the tube 70. In addition, since the electrode 32 is provided on the lower surface of the flange portion 626 located below the control unit 630, the electrode 32 is located below the tube 70 that is the vector direction of the electrocardiogram signal.

  Thereafter, the fastening band 650 is brought into close contact with the outer periphery of the fitting step portion 624 to tighten the fitting step portion 624 from the outer periphery side. Thereby, the separation distance of the slit 640 is narrowed, and the fitting step 624 is held in close contact with the outer peripheral edge 517 of the listening sound detection unit 510. The fastening band 650 may be formed of an elastic member such as an elastomer, or may be formed of a resin belt that can be fastened.

  Further, in the state where the electrocardiogram unit 600 is attached to the sound detection unit 510, the attachment part 622 is provided on a part of the inner periphery of the attachment base 620, so that the conical part 518 of the sound detection part 510 is almost exposed. It is the state that was done. Therefore, when a doctor makes a diagnosis by grasping the sound detection unit 510, a diagnosis operation similar to that of a normal stethoscope (without the electrocardiogram unit 600) is possible, which gives a sense of incongruity regarding the operability of the stethoscope. ECG signals can be measured without it.

DESCRIPTION OF SYMBOLS 10 Diagnosis apparatus 20 Stethoscope 30 Electrocardiogram detection part 31-33 Electrode 40 Control unit 50 External unit 52 Display part 54 Operation part 56 Patient selection button 60 Sound detection part 62 1st detection part 63 Diaphragm 64 2nd detection part 65 Rubber member 66 Main body 68 Switching member 69 Hearing hole 70 Tube 72, 74 Ear tube 76, 78 Ear chip 80 Electric wire 90 Switching operation unit 100 Control circuit 110 Wireless transmission unit 120 Battery 130 First electrocardiogram detection unit 140 Second heart Electricity detection unit 150 Wireless reception unit 160 Storage unit 162 Database 170 Battery 200 Diagnostic device 210 Internet 220 Auscultation unit 222 Main body 224 Bell-type detection unit 226 Gripping unit 230 Doctor side terminal device 240 Electrocardiogram detection unit 250 Microphone 260, 300, 410 Communication Device 270 Memory (R M)
280 Control unit 290 Battery 310 Control circuit 320, 420 Display device 330 Storage unit 340, 430 Input unit 350, 440 CCD camera 360, 450 Headphone with microphone 400 Patient side terminal device 500, 600 ECG unit 510 Auditory sound detection unit 512 Tube connection Part 514 Large diameter part 516 Sound transmission path 517 Outer peripheral edge part 518 Conical part 520 Mounting base 530, 630 Control unit 522 Conical part 524 Electrocardiogram detection part 526, 640 Slit 527 Mark 540 Electric wire 550 Non-slip sheet 620 Mounting base 622 Mounting portion 624 Fitting step portion 626 Flange portion 650 Fastening band

Claims (8)

An auditory detection unit for detecting body sounds, a tube having one end communicating with the auditory detection unit, and a pair of ear canals branched from the other end of the tubes, from the ends of the pair of ear canals A stethoscope for auscultating the body sound;
An electrocardiogram detection unit that is provided in the hearing sound detection unit and detects a potential associated with the heartbeat;
A control unit which is provided in the stethoscope and converts the electric potential detected by the electrocardiogram detection unit into a radio signal and transmits it;
An external unit that is provided separately from the stethoscope, receives a radio signal transmitted by the control unit, and displays a waveform diagram based on the radio signal;
A diagnostic apparatus comprising:   The diagnostic apparatus according to claim 1, wherein the electrocardiogram detection unit and the control unit are provided on an attachment base that is detachably attached to the hearing sound detection unit. The control unit is
A wireless transmission unit that converts the potential detected by the electrocardiogram detection unit into a wireless signal and transmits the wireless signal;
A battery for supplying power to the wireless transmitter;
The diagnostic apparatus according to claim 1, wherein the diagnostic apparatus includes: The external unit is a portable terminal device,
A wireless receiver for receiving a wireless signal transmitted by the wireless transmitter;
A storage unit for storing a change in potential from the wireless reception unit;
A display for displaying a waveform diagram based on the change in the potential;
The diagnostic apparatus according to claim 1, comprising: The sound detection unit is
A first detector having a diaphragm for detecting a high frequency of the body sounds;
A second detection part having a rubber material at a peripheral part for detecting a low frequency among the body sounds;
The first detection unit and the second detection unit are provided to be switchable,
The diagnostic apparatus according to claim 1, wherein the electrocardiogram detection unit is provided in each of the first detection unit and the second detection unit. An auscultation unit having an acoustic detection unit for detecting body sounds;
A terminal device that is provided separately from the auscultation unit, receives a radio signal transmitted by the auscultation unit, and displays a waveform diagram based on the radio signal and a heart sound signal;
The auscultation unit includes an electrocardiogram detection unit that detects a potential associated with a heart beat, a microphone that detects a heart sound, a potential detected by the electrocardiogram detection unit, and a heart sound signal detected by the microphone as a radio signal And a communication means for converting the data into a terminal device and transmitting it to the terminal device. The auscultation unit is
A storage unit for storing a potential detected by the electrocardiogram detection unit and a heart sound signal detected by the microphone;
A battery for supplying power to the wireless transmitter;
The diagnostic apparatus according to claim 6, further comprising: The terminal device
A communication unit having a wireless reception unit for receiving a wireless signal of a potential and a heart sound signal transmitted by the wireless transmission unit of the auscultation unit;
A storage unit for storing a change in potential and a heart sound signal from the communication unit;
A display unit for displaying a waveform diagram based on a change in potential detected by the electrocardiogram detection unit and a heart sound signal detected by the microphone;
The diagnostic apparatus according to claim 6 or 7, characterized by comprising:

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