JPH07255683A - Radio control system for receiver implanted in a living organism - Google Patents

Abstract

PURPOSE:To provide a system capable of checking and reporting in real time the normal and abnormal functioning of a receiver implanted in a living organism or the adequateness of the position of a transmitter antenna installed on the living organism. CONSTITUTION:High frequency signals having no-signal intervals between respective signal frames are transmitted from a transmitter as signals for checking a transmitter antenna or abnormality of a receiver. When said signals are properly received by a receiver, a timer 13 activates an oscillator 14 during each of the no-signal intervals to generate oscilation signals and simultaneously, a switch 10 is turned on to connect the oscillator to a receiver antenna coil 9 for transmission of the oscillation signals. The transmitter is provided with a detector 7 for connection with a transmitter antenna coil 6 by the agency of a switch 5 only during each of the no-signal intervals to receive the oscillation signals from the receiver and in addition, an alarm device 8 for issuing an alarm according to the indication of the oscillation signals.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless in-vivo embedded receiver control system for controlling a receiver embedded in a living body by wireless transmission from an in-vitro transmitter, and more particularly to a transmission mounted outside the living body. The present invention relates to a wireless in-vivo receiver control method for detecting whether a mounting position of a machine antenna is appropriate or an abnormality of a receiver and issuing an alarm.

[0002]

2. Description of the Related Art In recent years, with the miniaturization of electronic circuits, a receiver is embedded in a living body, and a wireless in-vivo embedded receiver control system for controlling this receiver by a transmitter outside the living body or an outside living body. The in-vivo information measuring method for measuring in-vivo information sent from an in-vivo receiver by the receiver has been receiving attention.

Conventionally, as an in-vivo information measuring method, there is one disclosed in Japanese Patent Application Laid-Open No. 61-181924. Referring to FIG. 4, this in-vivo information measuring method is a transmitter 3 which is embedded in a living body and transmits an electromagnetic wave having an oscillation frequency corresponding to the pressure or the temperature in the living body as a transmission signal to the outside of the living body.
0 and a receiver 50 that receives the transmitted signal in vitro. This in-vivo information measuring method is used for hyperthermia for the treatment of cancer. The living body is irradiated with heating high-frequency waves, and the heating high-frequency electromagnetic energy is applied to the receiver antenna coil 9 of the receiver 30. Receive as received energy. The rectifying diode 23 and the smoothing capacitor 24 convert the received energy into a DC voltage,
This DC voltage is applied through a resistor 39 to an active oscillation circuit having a piezoelectric vibrator 34 having pressure or temperature dependence, a transistor 37, capacitors 35 and 38, and a resistor 36. The transmitter antenna coil 6 radiates an electromagnetic wave having an oscillation frequency corresponding to the pressure or temperature in the living body from the active oscillation circuit to the outside of the living body. In the in vitro receiver 50, the receiver antenna coil 31 receives the electromagnetic wave as a received signal, the high frequency amplifier 32 amplifies the received signal as an amplified signal, and the frequency counter 33 counts the oscillation frequency of the amplified signal. The in-vivo pressure or temperature is thereby measured in vitro.

In this in-vivo information measuring method, an active oscillation circuit capable of generating an electromagnetic wave of strong energy is provided as an oscillation circuit of the transmitter 30 in the living body, and the active oscillation circuit is irradiated with power from the outside. By utilizing the high frequency energy for heating, the energy of the electromagnetic wave radiated to outside the living body is increased to facilitate the measurement.

[0005]

As described above, in the above-mentioned in-vivo information measuring method, the active energy oscillating circuit capable of generating the electromagnetic wave of strong energy is used as the oscillating circuit to measure the electromagnetic energy emitted from the inside of the living body. Although it is intended to make the measurement easier by increasing the number, there is no function to check the quality of the transmission / reception state. In addition, generally, in this type of method, weak electromagnetic energy is usually used in order to minimize the influence of electromagnetic waves on the living body, but the strong electromagnetic energy used in the in-vivo information measuring method described above is Has a large effect on.

On the other hand, the wireless in-vivo embedded receiver control system for controlling a receiver embedded in a living body by wireless transmission from a transmitter outside the living body does not have a function of checking the transmission / reception state. The transmitter antenna to be mounted on the skin of the living body is preliminarily marked on the skin of the living body, or is mounted depending on the palpation or the feeling. Particularly, an unfamiliar person who uses it at home or the like is concerned about safely mounting the transmitter antenna. Further, it is difficult to detect an abnormality of the receiver embedded in the living body from outside the living body.

Therefore, an object of the present invention is to provide a wireless in-vivo embedded receiver control system by which even an inexperienced person can easily find the exact mounting position of the antenna of the transmitter outside the living body on the living body. is there.

Another object of the present invention is to provide a wireless in-vivo embedded receiver control system capable of checking an in-vivo receiver for abnormality in an in-vitro transmitter.

Another object of the present invention is to provide a wireless in-vivo embedded receiver control system capable of exchanging signals between a transmitter and a receiver with weak electromagnetic energy.

[0010]

According to the present invention, there is provided a wireless live device including a receiver embedded in a living body and a transmitter existing outside the living body, wherein the receiver is wirelessly controlled by the transmitter. In the implantable receiver control method, the transmitter generates a high frequency signal having consecutive frames in which each frame has a fixed time length and a predetermined no signal period is provided between two consecutive frames. A high-frequency signal generator (1-4), a transmitter antenna coil (6),
A reception detector (7), which is connected to the high-frequency signal generator, usually the high-frequency signal generator is connected to the transmitter antenna coil, and the high-frequency signal is transmitted to the transmitter antenna coil outside the transmitter. A transmitter that connects the transmitter antenna coil to the reception detector during the no-signal period when the high-frequency signal generator does not generate the continuous frames of the high-frequency signal. A switch (5); a receiver antenna coil (9) in which the receiver receives the transmitter transmission signal as a receiver reception signal; and a non-signal period detected from the receiver reception signal. A no-signal period detection unit (11 to 1) that outputs a no-signal period detection signal while detecting the signal period.
3 or 11, 12, 20, 20-22, 25, 26); and connected to the no-signal period detection unit, and generates an oscillation signal while the no-signal period detection unit outputs the no-signal period detection signal. An oscillating unit (14 or 23, 24) for connecting the receiver antenna coil to the no-signal period detector, and usually connecting the receiver antenna coil to the no-signal period detector. The period detector is provided, and only while the no-signal period detector outputs the no-signal period detection signal, the oscillator is connected to the receiver antenna coil,
A receiver switch (10) for transmitting the oscillation signal to the outside of the receiver as a receiver transmission signal to the receiver antenna coil; and the reception detector is also connected to the high frequency signal generator. Whether the receiver transmission signal is received from the transmitter antenna coil via the transmitter switch during the no-signal period after the high-frequency signal generator generates each frame of the high-frequency signal. Detect
A wireless in-vivo embedded receiver control system is obtained, which is characterized in that it outputs a reception detection signal when it detects it and outputs a non-detection signal when it does not detect it.

Further, according to the present invention, a wireless in-vivo embedded receiver control is provided, which comprises a receiver embedded in a living body and a transmitter existing outside the living body, wherein the receiver is wirelessly controlled by the transmitter. In the method, the transmitter includes a high-frequency signal generator that generates a high-frequency signal having continuous frames in which each frame has a fixed time length and a predetermined no-signal period is provided between two continuous frames. (1-
4) and; transmitter antenna coil (6); reception detector (7); connected to the high-frequency signal generator, and usually,
The high frequency signal generator is connected to the transmitter antenna coil, and the high frequency signal is transmitted to the outside of the transmitter as a transmitter transmission signal by the transmitter antenna coil. A transmitter switching device (5) for connecting the transmitter antenna coil to the reception detector during the no-signal period in which no consecutive frames are generated; Receiver antenna coil (9) for receiving as received signal
An abnormality detector (15) for detecting whether the receiver is normal or abnormal, and; when the abnormality detector detects that the receiver is normal, the no-signal from the receiver reception signal A no-signal period detection unit (11 to 13, 16 or 11, 12, 16, 20 to 2 which detects a period and outputs a no-signal period detection signal while detecting the no-signal period.
2) and; an oscillating unit (14 or 23, 24) which is connected to the no-signal period detecting unit and generates an oscillation signal while the no-signal period detecting unit outputs the no-signal period detecting signal.
And; connected to the no-signal period detector, normally connecting the receiver antenna coil to the no-signal period detector,
The receiver reception signal is given to the no-signal period detection unit, and only while the no-signal period detection unit outputs the no-signal period detection signal, the oscillation unit is connected to the receiver antenna coil, A receiver switcher (10) for transmitting the oscillation signal to the outside of the receiver as a receiver transmission signal through the receiver antenna coil;
The receiver is also connected to the high-frequency signal generator, and during the no-signal period after the high-frequency signal generator generates each frame of the high-frequency signal, from the transmitter antenna coil through the transmitter switch. Wireless in-vivo receiver control method characterized by detecting whether or not a transmission signal is received, outputting a reception detection signal when it detects it, and outputting a non-detection signal when it does not detect it Is obtained.

[0012]

Embodiments of the present invention will now be described with reference to the drawings.

Referring to FIG. 1, a wireless in-vivo embedded receiver control system according to an embodiment of the present invention includes a receiver and a transmitter. This wireless in-vivo embedded receiver control system is a functional electrical stimulator that reconstructs or improves biological function by applying electrical stimulation to nerves and muscles of the limbs paralyzed by stroke or spinal cord injury, and pain relief by electrical stimulation. It is used for an electric stimulator for performing, a drug injecting device for pain relief by injecting a drug, and the like. In such a device, in order to continuously and long-term stimulate nerves or muscles in the living body or deep parts in the living body or inject a drug, a part of the device is embedded in the living body as an embedded portion. It is necessary to control the embedded part from outside the body. In this wireless in-vivo embedded receiver control system, the receiver is embedded in the living body as an embedded portion, and the transmitter is arranged outside the living body to control the receiver.

The transmitter has a high frequency signal generator having an oscillator 1, a signal generator 2, a modulator 3 and an output amplifier 4. The high-frequency signal generation unit generates a high-frequency signal having continuous frames in which each frame has a fixed time length and a predetermined no-signal period is placed between two continuous frames. This high frequency signal is shown in FIG.

Referring to FIGS. 1 and 2, oscillator 1 generates a carrier wave during a period corresponding to consecutive frames, and stops the generation of a carrier wave during a period corresponding to a no-signal period.
The signal generator 2 is composed of, for example, a microcomputer, generates a synchronization signal and a plurality of data signals D1 to Dn following it in a period corresponding to each continuous frame, and a period corresponding to a non-signal period is The generation of the sync signal and the plurality of data signals is stopped. The signal generator 2 generates a transmission antenna check signal as a predetermined one, for example, D1 of the plurality of data signals of each frame. Modulator 3
Is connected to the oscillator 1 and the signal generator 2 and modulates a carrier wave into a modulated wave with a synchronization signal and a plurality of data signals D1 to Dn. The output amplifier 4 is connected to the modulator 3, amplifies the modulated wave, and outputs a high frequency signal.

The transmitter further comprises a transmitter antenna coil 6
And a detector 7, a switching device 5, and an alarm device 8. The switching device 5 is connected to the signal generator 2, and normally, the output amplifier 4 is connected to the transmitter antenna coil 6 and a high frequency signal is transmitted to the outside of the transmitter as a transmitter transmission signal to the transmitter antenna coil 6. Then, the transmitter antenna coil 6 is connected to the detector 7 during a signalless period in which the signal generator 2 does not generate the synchronization signal and the plurality of data signals D1 to Dn.

The receiver comprises a receiver antenna coil 9 for receiving a transmitter transmission signal as a receiver reception signal, and a demodulator 1.
1, a register 12, and a timer 13, a no-signal period detector, an oscillator 14, and a switch 10.

The no-signal period detecting section detects a no-signal period from the receiver reception signal, and outputs a no-signal period detection signal while detecting the no-signal period. Specifically, the demodulator 11 demodulates the receiver reception signal into a synchronization signal and a plurality of data signals D1 to Dn for each frame. Register 1
2 is connected to the demodulator 11 and, in response to a synchronization signal for each frame, stores a plurality of data signals D1 to Dn for each frame subsequent to the synchronization signal as a plurality of storage data signals for each frame, When the plurality of data signals D1 to Dn for each frame are stored, the plurality of storage data signals D1 to Dn for each frame are output. The timer 13 is
When the timer operation period is set equal to the no-signal period and the transmission antenna check signal D1 which is a predetermined one of the plurality of stored data signals D1 to Dn is received, the timer operation is started, and when the timer operation period elapses. The timer operation is stopped, and while the timer operation is being performed, a signal indicating that the timer is operating is output as a no-signal period detection signal.

The oscillator 14 generates an oscillation signal while the no-signal period detection signal is being output. The switch 10 is connected to the timer 13 and is usually a receiver antenna coil 9
Is connected to the demodulator 11, the receiver reception signal is given to the demodulator 11, and the oscillator 14 is connected to the receiver antenna coil 9 only while the timer 13 outputs the no-signal period detection signal. The machine antenna coil 9 is caused to transmit the oscillation signal to the outside of the receiver as a receiver transmission signal.

In the transmitter, the detector 7 is also connected to the signal generator 2 and in the no signal period after the signal generator 2 generates the synchronizing signal of each frame and the plurality of data signals D1 to Dn. It is detected whether or not a receiver transmission signal is received from the transmitter antenna coil 6 via the switch 5, and when it is detected, a reception detection signal is output, and when it is not detected, a non-detection signal is output. In response to the non-detection signal, the alarm device 8 generates an alarm such as an alarm sound, light emission, vibration, etc., and keeps the generation of this alarm until the reception detection signal is received. Stop.

In this way, when the transmitting antenna check signal D1 is correctly received by the receiver, the oscillating signal is transmitted from the receiver during the no-signal period, and the oscillating signal is received by the transmitter antenna coil 6 and is transmitted correctly. When it is received, the normal transmission is performed, and when it is not received, an alarm is issued to notify the user of the improper mounting position of the transmitter antenna coil 6, and the correct use can be promoted.

The receiver further includes an abnormality detector 15 for detecting whether each part of the receiver is normal or abnormal. Figure 1
In the above example, the abnormality detector 15 detects whether the three locations of the receiver are normal or abnormal, and outputs three result signals, respectively. At this time, the abnormality detector 15 outputs a logical "1" level signal when the relevant part of the receiver is normal, and outputs a logical "0" level signal when the relevant part of the receiver is abnormal. . Here, the signal generator 2 of the transmitter uses the data signal D of each frame instead of the transmission antenna check signal D1.
It is assumed that an abnormality check signal is generated as one of 2 to D4 (for example, D2). In this case, the register 12 of the receiver outputs an abnormality check signal which is a logical "1" level signal as the storage data signal D2. AND circuit 16
Compares the abnormality check signal with one result signal corresponding to the output D2 of the register 12 among the three result signals of the abnormality detector 15, and the one result signal indicates that the corresponding portion of the receiver is normal. If it is a logical "1" level signal indicating that, a logical "1" level signal is output. Register 1
Even when 2 outputs an abnormality check signal as the storage data signal D3 or D4, the AND circuit 16 performs the same operation with reference to the result signal of the abnormality detector 15 corresponding to the storage data signal D3 or D4. In this way, the AND circuit 16 receives a predetermined logic level signal (logic "1") when it receives the abnormality check signal D2 and when the abnormality detector 15 detects that the receiver is normal. Function as a logic circuit that outputs a level signal).

When the timer 13 receives this predetermined logic level signal (logic "1" level signal), it starts the timer operation as in the case where it receives the transmission antenna check signal D1, and when the timer operation period elapses. The timer operation is stopped, and while the timer operation is being performed, a signal indicating that the timer is operating is output as a no-signal period detection signal. Subsequent operations of the receiver and the transmitter are the same as when the receiver receives the transmission antenna check signal D1.

Although only one oscillation signal is used by one oscillator 14, the transmitter antenna check signal and various abnormality check signals are transmitted in a time division manner, and the presence or absence of the oscillation signal at that time is detected to determine the transmitter antenna. It is possible to check the mounting position of the coil 6 and normality / abnormality of each part of the receiver.

Continuing to refer to FIGS. 1 and 2, the original electrical stimulation function and drug injection function of the transmitter and receiver will be described. For example, when performing electrical stimulation, the signal generator 2 of the transmitter generates the control data signals D5 to Dn.
In this case, the register 12 of the receiver receives the control data signal D5
To Dn are stored as storage data signals, and these storage data signals are given to the signal converter 17, and, for example, the magnitude (voltage) or pulse width of the electrical stimulation signal is set, and the output section (through output circuit 18 outputs For example, an electric current is applied to the nerves and muscles to output electric stimulation. An abnormality check signal that is a logic "1" level signal is output.
Control of drug infusion and other treatments are performed as well.

Referring to FIG. 3, there is shown another receiver that replaces the receiver of FIG. The receiver includes similar parts indicated by like reference numbers. This receiver has a diode 20, a resistor 22 and a capacitor 21 in place of the timer 13 of FIG.
Instead of, a diode 23 and a capacitor 24 are provided. In the capacitors 21 and 24, the diodes 20 and 23 rectify the receiver reception signal from the receiver antenna coil 9 to store electric charges. When the transmitting antenna check signal D1 is transmitted from the transmitter and is correctly received by this receiver, the register 12 stores the transmitting antenna check signal D1 and stores it as a storage data signal. When the register 12 outputs the stored data signal D1, the switching device 10 is operated through the OR circuit 26 and the diode 25 to connect the contacts Sa and Sb to the lower side. Switch 10
Holds the contacts Sa and Sb downward while it is discharged by the contact Sa with the time constant of the capacitor 21 and the resistor 22. In the self-holding period, a time constant is set so that the electric discharge occurs within the non-signal period. On the other hand, the contact 24 connects the capacitor 24 to the receiver antenna coil 9.
The charge received in the capacitor 24 by previously rectifying the signal received by the receiver by the diode 23 is received by the receiver antenna coil 9
Then, it flows as a vibration wave at the resonance frequency of the capacitor 24 into the receiver antenna coil 9 and transmits an appropriate oscillation signal.
This embodiment has a simple circuit configuration such as transmitting an oscillation signal by a passive circuit, and rectifies the receiver reception signal and stores the energy stored in the capacitors 21 and 24 as a driving power source for a timer, a switch, an oscillator, or the like. The feature is that it is used and the power consumption efficiency of the receiver is good.

Thus, the resistor 22 and the capacitor 21
Has a discharge operation period defined in advance equal to the no-signal period, is normally charged by using the rectified signal of the diode 20 as charging energy, and is a transmission antenna which is a predetermined one of the plurality of stored data signals D1 to Dn. When the check signal D1 is received, the discharging operation of the charging energy is started, and the discharging operation is ended when the discharging operation period elapses.
It acts as a charging / discharging circuit for giving 0.

The diode 23 for rectifying the receiver received signal from the receiver antenna coil 9 into a rectified signal and the capacitor 24 for storing the rectified signal as electric energy are used in the no-signal period detecting section (11, 12, 20-2
2, 25, 26) act as an oscillating unit for generating an oscillating signal while outputting the signal-free period detection signal. The switch 10 includes a no-signal period detection unit (11, 12, 20 to 22,
25 and 26) are outputting the no-signal period detection signal, both ends of the capacitor 24 are connected to the receiver antenna coil 9 to cause the receiver antenna coil 9 to convert the electric energy as the oscillation signal. The oscillation signal is transmitted from the receiver antenna coil 9 to the outside of the receiver as a receiver transmission signal.

Abnormality check signal D2 and control data signal D
The operation of this receiver when receiving 5 to Dn is the same as in the case of FIG.

[0030]

According to this type of wireless in-vivo embedded receiver control system, the transmitter antenna coil outside the body must be attached and detached every time it is used, but according to the present invention, the mounting position of the transmitter antenna coil can be changed. It is possible to check the quality and normality / abnormality of the receiver in real time during use, and even a person who is unfamiliar at home or the like can use it correctly and safely as the most important medical device. Further, according to the present invention, since the oscillating unit in the receiver is configured by the passive element, it is possible to perform communication between the transmitter and the receiver with weak energy.

[Brief description of drawings]

FIG. 1 is a block diagram of a wireless in-vivo embedded receiver control method according to an embodiment of the present invention.

FIG. 2 is a time chart of a high frequency signal used in the wireless in-vivo embedded receiver control system of FIG.

3 is a block diagram of another receiver used in place of the receiver in the wireless in-vivo embedded receiver control system of FIG. 1. FIG.

FIG. 4 is a block diagram of a conventional wireless in-vivo embedded receiver control method.

[Explanation of symbols]

 1 oscillator 2 signal generator 3 modulator 4 output amplifier 5 switcher 6 transmitter antenna coil 7 detector 8 alarm 9 receiver antenna coil 10 switcher 11 demodulator 12 register 13 timer 14 oscillator 15 abnormality detector 16 AND circuit 17 Signal Converter 18 Output Circuit

Claims (15)

[Claims] 1. A wireless in-vivo embedded receiver control system, comprising: a receiver embedded in a living body; and a transmitter existing outside the living body, wherein the receiver is wirelessly controlled by the transmitter. The machine has a high-frequency signal generator (1-4) for generating a high-frequency signal having continuous frames in which each frame has a fixed time length and a predetermined no-signal period is placed between two continuous frames. A transmitter antenna coil (6); a reception detector (7); connected to the high-frequency signal generator, usually the high-frequency signal generator connected to the transmitter antenna coil, and the transmitter antenna Cause the coil to transmit the high frequency signal to the outside of the transmitter as a transmitter transmission signal,
A transmitter switcher (5) for connecting the transmitter antenna coil to the reception detector during the no-signal period during which the high-frequency signal generator does not generate the continuous frames of the high-frequency signal; A receiver antenna coil (9) for receiving the transmitter transmission signal as a receiver reception signal; and detecting the no-signal period from the receiver reception signal, and while detecting the no-signal period, No-signal period detection section that outputs a no-signal period detection signal (11 to 13 or 11, 12, 20 to 22, 25, 2
6) and; an oscillating unit (14 or 23, 24) which is connected to the no-signal period detecting unit and generates an oscillation signal while the no-signal period detecting unit outputs the no-signal period detecting signal.
And; connected to the no-signal period detector, normally connecting the receiver antenna coil to the no-signal period detector,
The receiver reception signal is given to the no-signal period detection unit, and only while the no-signal period detection unit outputs the no-signal period detection signal, the oscillation unit is connected to the receiver antenna coil, A receiver switch (10) for transmitting the oscillation signal to the outside of the receiver as a receiver transmission signal to the receiver antenna coil; and the reception detector is also connected to the high frequency signal generator. Whether the receiver transmission signal is received from the transmitter antenna coil via the transmitter switch during the no-signal period after the high-frequency signal generator generates each frame of the high-frequency signal. Is detected and outputs a reception detection signal when it is detected, and outputs a non-detection signal when it is not detected. 2. The transmitter further comprises an alarm (8) connected to the reception detector, the alarm generating an alarm in response to the non-detection signal. The wireless in-vivo embedded receiver control method according to claim 1. 3. The alarm device generates an alarm in response to the non-detection signal, maintains the generation of the alarm until the reception detection signal is received, and generates the alarm when the reception detection signal is received. The wireless in-vivo receiver control method according to claim 2, wherein the wireless in-vivo receiver control method is stopped. 4. The carrier wave oscillator (1), wherein the high-frequency signal generator generates a carrier wave during a period corresponding to the continuous frames, and stops generation of the carrier wave during a period corresponding to the no-signal period. Generating a sync signal and a plurality of data signals following it during a period corresponding to each of the consecutive frames, and stopping the generation of the sync signal and the plurality of data signals during a period corresponding to the no-signal period A signal generator (2) for controlling the carrier wave and the signal generator, and a modulator (3) for modulating the carrier wave into a modulated wave by the synchronization signal and the plurality of data signals; And an amplifier (4) for amplifying the modulated wave and outputting the high-frequency signal, which is connected to a device, the wireless in-vivo implant according to any one of claims 1, 2 and 3. Receiver system Method. 5. The wireless in-vivo implant according to claim 4, wherein the signal generating unit generates a transmission antenna check signal as a predetermined one of the plurality of data signals of each frame. Receiver control method. 6. The demodulator (11) for demodulating the reception signal of the receiver into the synchronization signal and the plurality of data signals for each frame, the demodulator (11) being connected to the demodulator. In response to the synchronization signal for each frame, the plurality of data signals for each frame subsequent to the synchronization signal are stored as a plurality of stored data signals for each frame, and the plurality of data signals for each frame are stored A register (12) for outputting the plurality of stored data signals for each frame at; and connected to the register,
A timer operation period is set in advance to be equal to the no-signal period, and when the transmission antenna check signal, which is a predetermined one of the plurality of stored data signals, is received, the timer operation is started, and the timer operation period is changed. A timer (13) that stops the timer operation when the time elapses and outputs a signal indicating that the timer is operating while the timer operation is being performed as the no-signal period detection signal; The wireless in-vivo embedded receiver control method according to claim 5. 7. The demodulator (11) for demodulating the receiver reception signal into the synchronization signal and the plurality of data signals for each frame; and the demodulator (11) connected to the demodulator. In response to the synchronization signal for each frame, the plurality of data signals for each frame subsequent to the synchronization signal are stored as a plurality of stored data signals for each frame, and the plurality of data signals for each frame are stored A register (12) for outputting the plurality of stored data signals for each of the frames; and a first rectifying a receiver reception signal from the receiver antenna coil into a first rectification signal.
A diode (20) of which a discharge operation period is set in advance to be equal to the no-signal period, and is normally charged by using the first rectified signal as charging energy, and a predetermined one of the plurality of stored data signals is charged. Receiving the transmission antenna check signal, the discharge operation of the charging energy is started, the discharge operation is ended when the discharge operation period elapses, and the discharge signal during the discharge operation is not transmitted. A charging / discharging circuit (21, 22) consisting of a resistor and a capacitor, which is given to the receiver switching device as a signal period detection signal.
6. The wireless in-vivo embedded receiver control system according to claim 5, further comprising: 8. The oscillating unit outputs a receiver reception signal from the receiver antenna coil to a second receiver.
A second diode (23) for rectifying the second rectified signal, and a capacitor (24) for storing the second rectified signal as electric energy, wherein the receiver switching unit includes the no-signal period detection unit. While outputting the no-signal period detection signal, both ends of the capacitor are connected to the receiver antenna coil, the receiver antenna coil is caused to convert the electric energy into the oscillation signal, and the oscillation signal is 8. The wireless in-vivo implantable receiver control method according to claim 1, wherein the receiver antenna coil is transmitted to the outside of the receiver as the receiver transmission signal. 9. A wireless in-vivo embedded receiver control system, comprising: a receiver embedded in a living body; and a transmitter existing outside the living body, wherein the receiver is wirelessly controlled by the transmitter. The machine has a high-frequency signal generator (1-4) for generating a high-frequency signal having continuous frames in which each frame has a fixed time length and a predetermined no-signal period is placed between two continuous frames. A transmitter antenna coil (6); a reception detector (7); connected to the high-frequency signal generator, usually the high-frequency signal generator connected to the transmitter antenna coil, and the transmitter antenna Cause the coil to transmit the high frequency signal to the outside of the transmitter as a transmitter transmission signal,
A transmitter switcher (5) for connecting the transmitter antenna coil to the reception detector during the no-signal period during which the high-frequency signal generator does not generate the continuous frames of the high-frequency signal; A receiver antenna coil (9) for receiving the transmitter transmission signal as a receiver reception signal; an abnormality detector (15) for detecting whether the receiver is normal or abnormal; When the abnormality detector detects that there is something, the no-signal period is detected from the receiver reception signal, and the no-signal period detection signal is output while the no-signal period is detected. Detection unit (11 to 13, 16 or 11, 1
2, 16, 20 to 22); an oscillating unit (1 that is connected to the no-signal period detecting unit and generates an oscillating signal while the no-signal period detecting unit is outputting the no-signal period detecting signal.
4 or 23, 24); and is connected to the no-signal period detector, usually the receiver antenna coil is connected to the no-signal period detector, and the receiver received signal is connected to the no-signal period detector. The oscillating unit is connected to the receiver antenna coil only while the non-signal period detecting unit is outputting the no-signal period detecting signal, and the oscillating signal is supplied to the receiver antenna coil by the receiver. And a receiver switch (10) for transmitting as a receiver transmission signal to the outside of the receiver, the reception detector is also connected to the high-frequency signal generator, and the high-frequency signal generator is connected to each of the high-frequency signals. During the no-signal period after a frame is generated, it is detected whether or not the receiver transmission signal is received from the transmitter antenna coil through the transmitter switching device, and when it is detected, a reception detection signal is output. , Inspection A wireless in-vivo embedded receiver control method characterized by outputting a non-detection signal when the signal is not output. 10. The transmitter further comprises an alarm (8) connected to the reception detector, the alarm generating an alarm in response to the non-detection signal. The wireless in-vivo embedded receiver control method according to claim 9. 11. The high-frequency signal generator includes a carrier wave oscillator (1) that generates a carrier wave during a period corresponding to the continuous frames, and stops the generation of the carrier wave during a period corresponding to the no-signal period. Generating a sync signal and a plurality of data signals following it during a period corresponding to each of the consecutive frames, and stopping the generation of the sync signal and the plurality of data signals during a period corresponding to the no-signal period A signal generator (2) for controlling the carrier wave and the signal generator, and a modulator (3) for modulating the carrier wave into a modulated wave by the synchronization signal and the plurality of data signals; 11. An in-vivo wireless implantable receiver control according to any one of claims 9 and 10, further comprising: an amplifier (4) which is connected to a receiver and amplifies the modulated wave and outputs the high frequency signal. Formula. 12. The wireless in-vivo embedded reception according to claim 11, wherein the signal generator generates an abnormality check signal as a predetermined one of the plurality of data signals of each frame. Machine control system. 13. The no-signal period detection unit includes a demodulator (11) for demodulating the receiver reception signal into the synchronization signal and the plurality of data signals for each frame; connected to the demodulator, In response to the synchronization signal for each frame, the plurality of data signals for each frame subsequent to the synchronization signal are stored as a plurality of stored data signals for each frame, and the plurality of data signals for each frame are stored A register (12) for outputting the plurality of stored data signals for each frame; and the abnormality check signal which is a predetermined one of the plurality of stored data signals and is connected to the register and the abnormality detector. At the time of receiving
Moreover, a logic circuit (16) that outputs a predetermined logic level signal when the abnormality detector detects that the receiver is normal;
The timer operation period is set equal to the signalless period, the timer operation is started when the predetermined logic level signal is received, and the timer operation is stopped when the timer operation period elapses, and the timer operation is performed. 13. The wireless in-vivo embedded receiver control according to claim 12, further comprising: a timer (13) for outputting a signal indicating that it is operating for a period of time as the signalless period detection signal. method. 14. The demodulator (11) for demodulating the receiver reception signal into the synchronization signal and the plurality of data signals for each frame, and the non-signal period detection unit is connected to the demodulator. In response to the synchronization signal for each frame, the plurality of data signals for each frame subsequent to the synchronization signal are stored as a plurality of stored data signals for each frame, and the plurality of data signals for each frame are stored A register (12) for outputting the plurality of stored data signals for each frame; and the abnormality check signal which is a predetermined one of the plurality of stored data signals and is connected to the register and the abnormality detector. At the time of receiving
Moreover, a logic circuit (16) for outputting a predetermined logic level signal when the abnormality detector detects that the receiver is normal; a receiver reception signal from the receiver antenna coil; A first diode (20) for rectifying into one rectified signal; a discharge operation period is set in advance equal to the no-signal period, and normally, the first rectified signal is charged as charging energy, and the predetermined When receiving a logic level signal, the discharge operation of the charging energy is started,
When the discharge operation period elapses, the discharge operation ends,
A charging / discharging circuit (21, 22) comprising a resistor and a capacitor, which supplies a discharge signal during the discharging operation as the no-signal period detection signal to the receiver switching device. Item 13. A wireless in-vivo embedded receiver control method according to Item 12. 15. The oscillating unit outputs a receiver reception signal from the receiver antenna coil to a second receiver.
A second diode (23) for rectifying the second rectified signal, and a capacitor (24) for storing the second rectified signal as electric energy, wherein the receiver switching unit includes the no-signal period detection unit. While outputting the no-signal period detection signal, both ends of the capacitor are connected to the receiver antenna coil, the receiver antenna coil is caused to convert the electric energy into the oscillation signal, and the oscillation signal is 15. The wireless in-vivo receiver control method according to claim 9, wherein the receiver antenna coil transmits the receiver transmission signal to the outside of the receiver as the receiver transmission signal.