JP2600400Y2 - Transceiver - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transmission / reception device suitable for application to a device for wirelessly transmitting biometric data such as an electrocardiogram, blood pressure, and body temperature.

[0002]

2. Description of the Related Art Conventionally, various kinds of measurements have been performed in hospitals and the like to obtain biometric data of patients in order to enhance the treatment effect. FIG. 6 shows a conventional electrocardiogram and a measurement state of a blood pressure value. The measurement of the electrocardiogram is used for monitoring a patient M who may cause arrhythmia, angina attack, and the like, and is also used for measurement in rehabilitation of a patient with myocardial infarction. This measurement is constantly monitored for the urgency of cardiac abnormalities. In particular, since it is difficult to monitor a nurse or the like in a place where the heart is burdened, such as in a toilet or bathing, the portable electrocardiogram telemeter 1 which is not restricted in movement of the patient M and is attached to the patient M is used. . The radio wave Wa from the electrocardiogram telemeter 1 is measured by an electrocardiogram monitor 4 arranged at a nurse's station (nurse station) 2 or the like. Also, a bedside monitor 3 is arranged so that an electrocardiogram can be observed even in a hospital room,
The radio wave Wa of the telemeter 1 is received.

[0003] On the other hand, measurement of blood pressure is widely used for clinical significance, but it is difficult to mount it on a moving patient M and perform automatic measurement thereof. That is, there are an invasive type and a frequently used non-invasive type in blood pressure value measurement. In the non-invasive type, the cuff 8 is wound around the upper arm of the patient M to apply pressure,
Alternatively, since the measurement is performed by detecting Korotkoff sounds, it is difficult to perform measurement while moving. In addition, if the patient moves during the measurement regardless of the open type or the non-invasive type, a normal measurement value cannot be obtained.The position where the cuff is wrapped around the arm and the position of the heart, that is, the high position, If the values are not the same, it is difficult to obtain an accurate measurement value, so that the blood pressure data relating to the patient M is transmitted from the wireless blood pressure monitor 10 installed on the bed B via the radio wave Wb, and is measured by the blood pressure monitor 12 receiving the data. ing. This measurement is performed at regular intervals, and the measured value over time is wirelessly transmitted to the nurse station 2, where centralized management is performed, and labor saving of the measurement is achieved.

[0004]

However, in the above-mentioned conventional technique, the electrocardiogram monitor 4 relating to the nurse station 2 and the blood pressure monitor 12 are separately required.
When a doctor, a nurse or the like performs monitoring with these two devices, the handling becomes complicated. Furthermore, two separate radio channels (frequency) are required, and there is a problem from the viewpoint of effective use of radio waves in view of the recent shortage of radio channels. The present invention has been made in view of the above-mentioned problem, and a single transmission wave (channel) is used, effective use of radio waves is promoted, convenience of use of the device is further improved, and safety of attachment to a living body is improved. An object of the present invention is to provide a transmission / reception device that improves the convenience of carrying the device.

[0005]

According to the present invention, for example, a transmitter 10 for transmitting a plurality of measured biometric data signals by radio waves.
In transceiver device that includes a receiver 12 for receiving radio waves from the transmission section 10 of Toko, the transmitting unit 10, a first subcarrier at the first biometric data signals S ₁ than the first measuring device A modulating unit 24 for modulating a signal and a detachable connector 28 to which a transmission cable Wr for transmitting a _second biometric data signal S2 obtained from a second measuring device 40 different from the first measuring device are connected. An isolation unit 46 for DC-insulating the _second biometric data signal S2 transmitted through the transmission cable Wr;
Biometric data signals S ₁ second modulated first sub-carrier signal modulated with this second biometric data signal S ₂ at
And a transmitter 26 that mixes the first and second biometric data signals S ₁ and S ₂ with the transmitter 26 that mixes the first and second biometric data signals with each other. It is like that.

[0006]

According to the transmitting / receiving apparatus of the present invention, a plurality of biometric data are transmitted by one transmission wave, the transmitted wave is received, and a plurality of biometric data are discriminated and derived from an output signal thereof. Are displayed and recorded, respectively, so that only one transmission wave (channel) is used, the effective use of radio waves is promoted, and the convenience of use of the device is further improved. Further, a transmission cable for transmitting biometric data.
(Wr), a detachable connector (28), and an isolation unit (46), so that the transmitter (14) to be attached to a patient or the like and the biological signal measurement unit (16) are electrically and mechanically separated. As a result, the safety of wearing on a living body and the convenience of carrying are improved.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the transmitting and receiving apparatus according to the present invention will be described in detail with reference to the drawings. In FIG. 1, reference numeral 10 denotes a radio wave W obtained by performing multiplex FM modulation or FSK modulation (frequency shift modulation) on one or both of an electrocardiogram measurement signal S ₁ from a living body and blood measurement data (signal) S _2. This is a transmission unit for transmission. 12 receives the radio wave W transmitted from the transmitting unit 10 and receives the electrocardiogram measurement signal S
It is derived by discriminating ₁ and biometric data S _2, a receiving unit for sending the monitoring (observation unit), not shown.

The transmitting unit 10 includes a power source (not shown) such as a battery for enabling movement, and mixes the supplied electrocardiogram measurement signal S ₁ with biometric data S ₂ described below. the portable transmitter 14 to transmit it, the biometric data S ₂ other than electrocardiogram, for example, consists of a fixed blood pressure measuring device 16 for sending the blood pressure data. Portable transmitter 14
The fixed blood pressure measurement device 16 and are connected by wires Wr to transmit the biometric data S _2.

The portable transmitter 14 includes an amplifier 22 to which the electrocardiogram measurement signal S ₁ is supplied, and an amplified electrocardiogram measurement signal S _1.
For example, a subcarrier modulation unit 24 that performs FM modulation,
A transmitter 26 to transmit at a predetermined power, wires Wr for transmitting biometric data S ₂ to be supplied and a connector 28 connected. Further, this connector 28
An amplifier 30 for amplifying the transmitted biometric data S ₂ through the signal from here (biometric data S ₂₎
Is mixed with the electrocardiogram measurement signal and input to the transmitter 26,
The ECG measurement signal S ₁ and the biological measurement data S
₂ is transmitted as a radio wave W.

The fixed blood pressure measurement device 16 for transmitting the biological measurement data S ₂ includes a well-known blood pressure measurement device 40 and an interface circuit (I / F circuit) to which an output from the blood pressure measurement device 40 is input.
42 and a subcarrier modulation unit 44 that performs, for example, FM modulation at a frequency different from that of the subcarrier modulation unit 24. Further, an isolation unit 46 that insulates and sends out the modulation signal from the subcarrier modulation unit 44
Is provided. The output terminal of the isolation section 46 and the input terminal of the amplifier 47 are connected.
Are connected to the electric wire Wr connected to the output end of the portable transmitter 14. Note that the isolation unit 46 may use any one of a photocoupler, a transformer, an isolation amplifier, and the like.

The receiving section 12 includes a receiver 50 for receiving the radio wave W from the transmitting section 10 and filters 62 and 64 such as a band pass filter (BPF) to which an output signal from the receiver 50 is supplied. And filters 62 and 64
Are connected to the subcarrier demodulators 66 and 68, respectively. From the subcarrier demodulation unit 66, the electrocardiogram measurement signal S
A signal equivalent to ₁ is output.
8 is derived is an equivalent signal with biometric data S ₂ from, displayed on the monitor installed in a nurse's station or the like to be described later, is recorded.

Next, the subcarrier modulating section 44 is provided with an F-type using a voltage-controlled binary oscillation circuit having a digital circuit configuration.
In the case of SK modulation, the binary oscillation circuit is, for example, a low level or a high level (L or H) of an input signal.
And outputs as a pulse signal each period T _L, T _H in accordance with the. The spectrum of this signal includes odd harmonics represented by the input frequency: f = 1 / T, but does not include even harmonics. The subcarriers are separated and demodulated by the filters 62 and 64. However, since only the fundamental frequency is separated, there is no close even harmonic 2f. Therefore, the filters 62 and 64 need only have a simple configuration with a low order, and
The / N ratio will also be improved. In addition, the binary oscillation circuit
In addition to a voltage control type using a digital circuit configuration, a known multivibrator or a Schmitt trigger type circuit can be used.

FIG. 2 shows the configuration of another embodiment. In another embodiment, data such as blood pressure and body temperature
After measuring at 0, it is sent to the digital signal processing unit 87. The digital signal processing unit 87 includes an I / F circuit 82,
Parallel / serial conversion circuit 84 and photoelectric conversion unit 8
6, various kinds of biological measurement data (blood pressure, body temperature, etc.) are input via an I / F circuit 82, and are further converted into serial signals by a parallel / serial conversion circuit 84, and then photoelectrically converted by a photoelectric conversion unit 86. Transmitted to the optical fiber cable Of, and the biological measurement data is transmitted through the optical fiber cable Of.
Transmitted as data S ₂₀ to the portable transmitter 14. Further, in the portable transmitter 14, the optical Faibake - Bull Of end is connected to the optical connector 29, the biometric de through the optical connector 29 - data S ₂₀ is input to the photoelectric conversion circuit 25. In this photoelectric conversion circuit 25, the biological measurement data S photoelectrically converted
₂₀ is derived and input to the subcarrier modulation unit 32. The output signal of the subcarrier modulation unit 32 is input to the transmitter 26 in the first embodiment and the same configuration as the portable transmitter 14, biometric de this transmitter 26 - data S ₂₀ radio waves W
Will be sent as

In this embodiment, the subcarrier modulation section 32 is provided in the portable transmitter 14 to perform modulation.

[0015] FIG. 3 shows a configuration example of a biometric data S ₂₀ is a digital signal in FIG. In this example, a measurement completion time, a phenomenon name indicating the type of measurement data, and measurement data are connected between a start bit indicating the start of data transmission and a stop bit indicating the end of data.

The portable transmitter 14 is often worn especially on the clothes of the patient M, and is required to be small and lightweight. In the first embodiment, the subcarrier modulation section 44 is provided with a fixed blood pressure measuring device. 16 to reduce the circuit scale of the portable transmitter 14. In the second embodiment, the subcarrier modulation section 32 is built in the portable transmitter 14. As described above, the primary modulation unit may be disposed on either side.

Next, the operation of the above embodiment will be described. In FIG. 4, when the patient M (corresponding to the living body 10) moves, the fixed blood pressure measurement device 16 and the portable transmitter 14 are separated. That is, the connector 28 is separated, and only the portable transmitter 14 is carried on clothes or the like, and the electrocardiogram measurement signal S ₁ from a sensor (not shown) attached to the body is always transmitted as the radio wave W. . This radio wave W is transmitted to a wireless centralized multi-development monitor 9 provided at a nurse station 95 or the like.
Received at 2, the data content of the electrocardiogram measurement signal S ₁ is displayed and recorded. This wireless centralized multi-development monitor 92
As is well known, receives multi-channel transmission radio waves, and includes a main body reception processing device 97, a display unit 96, a recording unit 98, and the like.

Further, when measuring the electrocardiogram and the blood pressure value of the patient M, the fixed blood pressure measuring device 16 and the portable transmitter 14 are connected. That is, the connector 28 is connected to the portable transmitter 14, and the portable transmitter 14 is attached to clothes or the like. Signal of the blood pressure values of the patient M bed B is supplied to the fixed blood pressure measurement device 16 from the sensor of the cuff portion 90, the biometric data S ₂ from the fixed blood pressure measuring device 16 is wire Wr
, And from there, both the electrocardiogram measurement signal S ₁ and the biological measurement data S ₂ are FM-modulated by the subcarrier modulators 24 and 44 at different frequencies, for example, and further mixed. Transmitted from the transmitter 26 as a single radio wave W. The radio wave W is received by the wireless centralized multi-phenomenon monitor 92 installed in the nurse station 95 and displayed, recorded, and the like in the same manner as described above.

It is to be noted that the fixed blood pressure measuring device 16 can also transmit blood pressure data alone as radio waves W as needed. The operation of another embodiment will be described. In FIG. 5, changes in various biological signals such as blood pressure and body temperature of the patient M are measured by the measuring device 80, and the biological measurement data from the measuring device 80 is supplied to the digital signal processing section 87, where 2
Biometric data S ₂₀ converted into binarized optical signal is supplied to the portable transmitter 14. The portable transmitter 14 transmits a radio wave W including various data such as blood pressure and body temperature together with the electrocardiogram measurement signal S ₁ of the patient M, and the receiving unit 12 receiving the radio wave W performs the same signal processing as described above. Done. That is, the radio wave W is transmitted to the nurse station 9 as described above.
Displayed on the wireless intensive multi-phenomenon monitor 92 installed at 5 etc.,
Be recorded.

In this manner, a plurality of biometric data (electrocardiogram measurement signal S ₁ , biometric data S ₂ , S ₂₀ ) are wirelessly transmitted by radio wave W of one frequency, and a plurality of biometric data are received from an output signal. By discriminating and deriving the biometric data, displaying and recording each, only one transmission wave (channel) is used, the effective use of radio waves is promoted, and the convenience of using the device is further improved.

Further, the optical fiber cable Of sending the biometric data S _20, an electrical device by the optical connector 29, or the safety of the mechanically attached to a living body for separable, i.e., electric shock or the like is prevented, and The convenience for carrying is improved.

In the above-described first and second embodiments, blood pressure, body temperature, and the like have been described as biological measurement data other than the electrocardiogram signal, but the I / F circuit 42 in FIG.
By using a converter and a serial / parallel converter, breathing, skin resistance and blood gas (O ₂ , C
Transmission of low-speed biometric data such as O ₂ ) is also possible.

In the above embodiment, the electrocardiogram measurement signal S _{1 is used.}
And biological measurement data S such as blood pressure, body temperature, blood gas, etc.
As sub-carrier modulation means such as ₁ (S _20), it has been described FM modulation or FSK modulation, but is not limited thereto. The present invention includes obtaining the same operation and effect as described above using various modulation schemes.

[0024]

As will be understood from the above description, according to the transmitting and receiving apparatus of the present invention, a plurality of biometric data are transmitted by one transmission wave, and this transmission wave is received, and the output signal is obtained. Since a plurality of biometric data are discriminated and derived and each of the plurality of biometric data is displayed and recorded, only one transmission wave (channel) is used, thereby promoting effective use of radio waves and further using the apparatus. Has the effect of improving convenience. Further, since the transmission cable for transmitting the biometric data, the detachable connector, and the isolation unit are provided, the transmitter mounted on a patient or the like and the biosignal measurement unit can be electrically and mechanically separated. This has the effect of improving the safety of wearing on a living body and the convenience of carrying.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an embodiment of a transmission / reception device of the present invention.

FIG. 2 is a block diagram illustrating a configuration of another embodiment.

FIG. 3 is a diagram for explaining a data configuration of another embodiment shown in FIG. 2;

FIG. 4 is a configuration diagram for explaining the overall operation of the embodiment shown in FIG. 1;

FIG. 5 is a configuration diagram for explaining the overall operation of another embodiment shown in FIG. 2;

FIG. 6 is an external configuration diagram showing a conventional electrocardiogram and blood pressure measurement device and a measurement state.

[Explanation of symbols]

Reference Signs List 10 transmitting unit 12 receiving unit 14 portable transmitter 16 fixed blood pressure measurement device 24, 32, 44 subcarrier modulation unit 26 transmitter 28 connector 29 optical connector 40 blood pressure measurement device 46 isolation unit Of optical fiber cable S ₁ electrocardiogram measurement signal S ₂ Biological measurement data Wr wire

────────────────────────────────────────────────── ─── Continued on the front page (51) Int.Cl. ⁶ Identification code FI H04J 1/04 A61B 5/04 310H (72) Inventor Kei Sasaki 1-57 Tenjincho, Kodaira-shi, Tokyo Tokyo, Japan Inside the factory (56) References Hikaru 2-141406 (JP, U)

Claims (2)

(57) [Scope of request for utility model registration] 1. A transmitting / receiving apparatus comprising: a portable transmitting unit for transmitting a plurality of measured biometric data signals by radio waves; and a receiving unit for receiving radio waves from the transmitting unit. A modulating unit for modulating a first subcarrier signal with a first biometric data signal from one portable measuring device; and a second measuring device obtained from a second measuring device different from the first measuring device. A detachable connector to which a transmission cable for transmitting a biometric data signal is connected; an isolation unit for DC-insulating the second biometric data signal transmitted via the transmission cable; A first subcarrier signal modulated with a measurement data signal and a second subcarrier signal modulated with the second biometric data signal;
And a transmitter that mixes the first and second sub-carrier signals and transmits the same as one wireless signal, wherein the receiving unit discriminates and derives the first and second biometric data signals. Transceiver. 2. The transmission / reception device according to claim 1, wherein the transmission cable uses an optical cable having an optical connector, and the isolation unit uses a photoelectric conversion circuit that performs photoelectric conversion.