JP4848851B2 - Biopsy system - Google Patents

Description

  The present invention relates to a biological inspection system having an inspection device placed in a living body and an extracorporeal unit that receives biological information transmitted from the inspection device.

  Conventionally, in order to measure and observe physical quantities such as in-vivo temperature and pH value over a long period of time, it has been equipped with a sensor and a small transmitter, and it is placed inside the living body and transmits the living body information wirelessly outside the body. There is known a living body inspection system having an inspection machine for performing an operation and an extracorporeal unit for receiving the wireless signal.

  Hereinafter, a conventional biopsy system will be described.

  A block diagram of a conventional inspection machine and extracorporeal unit is shown in FIG. In FIG. 14, a biopsy system 100 is installed in the vicinity of the patient's body surface by an inspection machine 101 which is a capsule endoscope inserted into the living body by being swallowed from the patient's mouth, and outside the body, for example, by a belt or the like. The extracorporeal unit 102 accumulates the biological information obtained by the inspection machine 101. The inspection machine 101 includes an illumination element 104 that illuminates the inside of the capsule-like container 103, an imaging element 105 that images the inside of the living body illuminated by the illumination element 104, driving of the illumination element 104 and the imaging element 105, and an imaged signal. A control circuit 106 that performs signal processing on the radio, a radio circuit 107 that transmits an image signal generated by the control circuit 106 to the outside and receives a signal from the outside, and the illumination element 104, the imaging element 105, and the control circuit 106 and a battery 108 for supplying operating power to the radio circuit 107 are incorporated. Note that the wireless circuit 107 also includes an antenna.

  On the other hand, the extracorporeal unit 102 includes a wireless unit 109 that maintains a wireless communication state with the inspection device 101, a control unit 110 that performs other control operations, and a power supply unit that supplies power to the wireless unit 109 and the control unit 110. 111. The wireless unit 109 includes a wireless circuit 112 that communicates with the wireless circuit 107 of the inspection machine 101, an antenna 113 that radiates and receives radio waves wirelessly, and the wireless circuit 112 even when the inspection machine 101 does not shoot. It has a wireless circuit 107 on the inspection machine 101 side and a wireless control circuit 114 that controls to maintain the communication state. The control unit 110 is connected to the wireless control circuit 114, controls the entire control circuit 115, a memory 116 that stores image data and the like connected to the control circuit 115, an external interface 117 connected to an external device, A display device 118 for displaying the status of the extracorporeal unit 102, a trigger button 119 for starting a timer, a real-time clock (abbreviated as RTC) 120 for measuring time, and an SRAM 121 for holding setting data such as patient data A maintenance power supply 122 that supplies power to the RTC 120 and the SRAM 121 in a constantly operating state. Since the setting data is stored in the SRAM 121 with the maintenance power supply 122, even if the power to the control unit 110 is turned off, the setting data is retained without being lost. The maintenance power source 122 supplies the RTC 120 with electric power necessary for continuous operation. The RTC 120 has a built-in timer circuit having an alarm output that informs of the elapse of the set time when the set time has passed. The timer circuit is set by the time schedule data from the external personal computer to the SRAM 121 via the external interface 117. This is done by inputting. The power supply unit 111 includes a battery 123 that supplies power, and the battery 123 is a power source that controls power supply to the control unit 110 via a power switch (main switch) 124 that performs ON / OFF of power supply. In addition to supplying power to the control circuit 125, power is also supplied to the wireless unit 109. The power supply control circuit 125 controls ON / OFF of the relay 126 connected in series to the power switch 124 connected to the battery 123, so that the power from the battery 123 supplied to the control unit 110 via the relay 126 is controlled. Controls power supply / cutoff. In a state where image acquisition is not performed, the control unit 110 controls the power supply control circuit 125 of the power supply unit 111 so that the power supply is turned off, so that the drive time by the battery 123 can be extended.

  The operation flow of the conventional inspection machine 101 and the external unit 102 is as follows. First, the time schedule time is input from the external personal computer to the SRAM 121 and the timer circuit of the RTC 120 is set. Next, after establishing communication between the inspection device 101 and the extracorporeal unit 102, the trigger button 119 is pressed, and the patient swallows the inspection device 101. When the trigger button 119 is pressed, a timer set in the RTC 120 starts. In this state, the power supply control circuit 125 receives the timer output of the RTC 120 and turns off the relay 126 to cut off the power supply to the control unit 110. Next, the RTC 120 determines whether the time until the start of photographing has elapsed, waits for the passage of the time, and outputs an alarm output to the power supply control circuit 125 after the time has elapsed. Then, the power control circuit 125 turns on the relay 126 so that power is supplied to the control unit 110. Further, the RTC 120 informs the control circuit 115 that the time until the start of imaging has elapsed, and the control circuit 115 transmits an imaging request to the inspection machine 101 via the wireless unit 109. The inspection machine 101 receives this signal, and the control circuit 106 sets the illumination element 104 and the imaging element 105 to the operating state. The illumination element 104 turns on an LED inside thereof, illuminates the inside of the living body of the patient, images the inside of the illuminated living body with the imaging element 105, performs signal processing with the control circuit 106, and wirelessly passes through the wireless circuit 107. The captured image data is transmitted to the external extracorporeal unit 102.

  Thereby, the conventional biopsy system 100 can start imaging after the capsule endoscope arrives at a site to be inspected, and can eliminate unnecessary in-vivo imaging.

As prior art document information related to the invention of this application, for example, Patent Document 1 is known.
JP 2005-288184 A

  However, the conventional inspection machine 101 and the extracorporeal unit 102 have a remote timer clock or the like having an SRAM or a timer circuit for the extracorporeal unit 102 in order to cause the inspection machine to start an in-vivo examination after a predetermined time has elapsed. 101 has a problem that a receiving RF circuit is newly required and the inspection machine 101 becomes complicated.

  Therefore, the biological inspection system of the present invention aims to simplify the extracorporeal unit and the inspection machine by eliminating the unnecessary in-vivo imaging of the inspection machine with a simple configuration.

  In order to achieve the above object, the living body inspection system of the present invention moves a predetermined path inside a living body, inspects a predetermined part in the predetermined path, and transmits information on the predetermined part inspected via an inspection machine antenna. An inspection machine that transmits to the outside of the living body, and an extracorporeal unit that is arranged outside the living body corresponding to the predetermined part and has an extracorporeal antenna that receives a signal including information on the predetermined part from the inspection machine. The extracorporeal unit includes a power control unit and a power control antenna disposed outside the living body corresponding to the predetermined part or outside the living body corresponding to the predetermined part in the predetermined route. Further, the power control unit transmits a power-on signal of the inspection machine via the power control antenna at an arbitrary time interval, and the inspection machine receives the power-on signal from the power control unit, A power switch for turning on the power of the inspection machine;

  By using the above-described biopsy system, it is possible to stop the operation of the inspection machine up to a predetermined inspection site with a simple system configuration, and to obtain biometric information of only the predetermined inspection site. Battery life can be extended.

(Embodiment 1)
FIG. 1 is a block diagram of an inspection machine according to the present invention. In FIG. 1, the inspection machine 1 has a capsule shape and is easy to be swallowed by a person. The power switch 2 in the inspection machine 1 has a magnetic sensor 3 therein, and the magnetic sensor 3 plays a role of detecting magnetism generated by a power control antenna disposed outside the living body, which will be described later. When the magnetic field intensity detected by the magnetic sensor 3 is greater than or equal to a predetermined value, the power switch 2 uses the power supplied from the battery 4 to the biosensor 5, the biometric information processing unit 6, and the RF transmitter. 7 is also supplied. Thereby, the test | inspection machine 1 acquires the biometric information, and starts the operation | movement which carries out the radio transmission of the said information outside a living body. As a specific flow, first, the living body sensor 5 acquires the surrounding living body information where the inspection machine 1 is placed. For example, it is conceivable to take a picture of the inside of the living body or to obtain a numerical value of pH. The biological information acquired by the biological sensor 5 is sent to the biological information processing unit 6, converted into digital data, and then sent to the RF transmitter 7. In the RF transmitter 7, in order to wirelessly transmit the biological information data to the outside of the living body, the digital data is converted into a high frequency signal, and the high frequency signal is wirelessly transmitted via the inspection device antenna 8. Although not shown in FIG. 1 for the sake of convenience, the inspection machine 1 has a control IC for controlling the overall operation. The control IC performs overall control of the operation of the inspection machine 1, and issues a command to each block so that the operation of the inspection machine 1 is performed at regular intervals.

  In FIG. 1, the operation of the power switch 2 is controlled by a magnetic field from outside the living body, but light may be used instead of the magnetic field. In this case, it is necessary to replace the magnetic sensor 3 with an optical sensor.

  FIG. 2 is an external view when the extracorporeal unit is mounted. In FIG. 2, the extracorporeal unit includes a power control antenna 9, a plurality of extracorporeal antennas 10, a system control unit 11, and a coaxial cable 12 connecting them. The power supply control antenna 9 and the extracorporeal antenna 10 are configured to be directly attached to the body in order to minimize the propagation loss with the inspection machine antenna 8 as much as possible.

  FIG. 3 shows an internal block diagram of the system control unit 11. In FIG. 3, the system control unit 11 demodulates a power supply control unit 13 that transmits a power-on signal to the inspection machine 1 via the power supply control antenna 9 and a radio signal received from the inspection machine 1 via the external antenna 10. The signal receiving unit 14 for restoring the biological information, the memory 15 for recording the biological information restored in the signal receiving unit 14, and the external antenna 10 and the signal receiving unit 14 are connected between the optimal external antenna 10 and An external antenna switch unit 16 that selects and sends a high-frequency signal received by the external antenna 10 to the signal receiving unit 14, and a system control unit that sends a control signal to each block in order to control each block of the system control unit 11 17 and a battery 18 that supplies power to each block of the system control unit 11.

  The operation of the system control unit 11 will be described below. First, the system control unit 11 transmits a power-on signal for starting the operation of the inspection machine 1 from the power control unit 13 to the power control antenna 9. Thereafter, the system control unit 11 confirms whether or not the biological information is transmitted from the inspection machine 1 by a wireless signal in the reception state of the plurality of external antennas 10. When a radio signal from the inspection machine 1 is not received, the system control unit 11 transmits a power-on signal from the power control unit 13 again after a predetermined time has elapsed. If reception of a radio signal from the inspection machine 1 is confirmed, the power-on signal is not transmitted from the power supply control unit 13 thereafter, and the in-vivo inspection by the inspection machine 1 is started.

  4 to 6 show examples of the arrangement of the power supply control antenna 9 and the extracorporeal antenna 10.

  FIG. 4 is an example of the arrangement of the power supply control antenna 9 and the extracorporeal antenna 10 when the small intestine is an inspection target. The power control antenna 9 is disposed on the duodenum, which is the digestive tract before the small intestine, and the four extracorporeal antennas 10 are disposed so as to cover the small intestine as a whole. When the inspection machine 1 is swallowed from the mouth and passes through the esophagus and stomach and reaches the duodenum, it detects a magnetic field periodically generated from the power supply control antenna 9 and starts its operation. For this reason, it is possible to avoid operation for obtaining unnecessary biological information for about 2 hours after the inspection device 1 is swallowed from the mouth until it reaches the duodenum, and the inspection device 1 is uselessly used. It is possible to prevent the inside battery from being consumed.

  FIG. 5 is an example of the arrangement of the power supply control antenna 9 and the extracorporeal antenna 10 when the large intestine is an examination target. The power control antenna 9 is disposed near the exit of the small intestine, which is the digestive tract in front of the large intestine, and the eight extracorporeal antennas 10 are disposed so as to cover the large intestine as a whole. When the inspection machine 1 is swallowed from the mouth, it passes through the esophagus, stomach, and duodenum, and when it reaches the small intestine exit, it detects a magnetic field periodically generated from the power control antenna 9 and starts its operation. Become. For this reason, it is possible to avoid operating for acquiring unnecessary biological information for about 6 hours after the inspection device 1 is swallowed from the mouth until it reaches the small intestine exit, and the inspection device is wasted. It is possible to prevent the battery in 1 from being consumed.

  4 and 5, after the inspection machine 1 starts operating, the operation of the inspection machine 1 may be stopped again based on the analysis result of the biological information acquired by the inspection machine 1. Good. For example, the color of the living body is analyzed from the in-vivo image acquired by the inspection machine 1, and if the color is not the color of the biological object to be inspected, the operation of the inspection machine 1 is stopped. In addition, the in-vivo position of the inspecting device 1 is estimated from the received power values of the radio signals from the inspecting device 1 received by a large number of external antennas 10, and when this position is far from the site to be examined, the inspecting device 1 The operation may be stopped.

  In these cases, a power-off signal is transmitted from the power supply control unit 13 to the inspection machine 1 via the power supply control antenna 9, and the operation of the inspection machine 1 is stopped. Here, both the power-off signal and the power-on signal are magnetic fields generated by the power control antenna 9. For example, every time the magnetic sensor 3 of the inspection machine 1 detects a magnetic field of a certain value or more, the power supply switch 2 is turned on. , It should be a mechanism that repeats off alternately.

  FIG. 6 shows a case where a plurality of power control antennas 9 are used. FIG. 6 is an example of the arrangement of the power supply control antenna 9 and the extracorporeal antenna 10 when the descending colon, which is a part of the small intestine and the large intestine, is an examination target. The first power control antenna 19 is disposed on the duodenum, which is the digestive tract in front of the small intestine, and the four extracorporeal antennas 10 are disposed so as to cover the entire small intestine. The second power control antenna 20 is disposed near the entrance of the large intestine, and the third power control antenna 21 is disposed near the exit of the transverse colon so that the three extracorporeal antennas 10 cover the descending colon as a whole. Placed in.

  When the inspection machine 1 is swallowed from the mouth, passes through the esophagus and stomach, and reaches the duodenum, it detects a magnetic field periodically generated from the first power supply control antenna 19 and starts its operation. . Thereafter, the inspection device 1 acquires biological information in the small intestine and then reaches the entrance to the large intestine. Therefore, the magnetic field periodically generated from the second power control antenna 20 is detected, and the inspection machine 1 stops its operation. Thereafter, when the inspection machine 1 reaches the exit of the transverse colon and detects a magnetic field generated by the third power supply control antenna 21, the operation is started again, and biological information in the descending colon is acquired. In this way, since the inspection machine acquires biological information only around the part to be inspected, wasteful consumption of the battery 4 in the inspection machine 1 can be further reduced.

  In addition, the timing which transmits a power-off signal to the 2nd power supply control antenna 20 is judged based on the in-vivo position of the test | inspection machine 1 estimated from the received power of the four external antennas 10 arrange | positioned on the small intestine. As a result, it is possible to prevent power loss due to unnecessary transmission of the power-off signal. Furthermore, the timing of transmitting the power-on signal to the third power control antenna 21 is that the signal receiving unit 14 detects that the magnetic field generated by the second power control antenna 20 is detected and the inspection device 1 stops transmitting the radio signal of the biological information. After a certain period of time has been confirmed. By performing such system control, consumption of the battery 18 can be reduced.

  FIG. 7 shows an example of the power control antenna 9. The power supply control antenna of FIG. 7 includes a high-frequency substrate 22, three loop antennas 23, 24, and 25 that generate a magnetic field around the high-frequency substrate 22, and a power supply control antenna circuit that connects the loop antennas 23, 24, 25 and the coaxial cable 12. The unit 26 is configured.

  The first loop antenna 23 is realized by a copper foil pattern formed on the high-frequency substrate 22 and has a magnetic dipole in the Z-axis direction. The second loop antenna 24 is realized by bending a conductor plate into a roll shape, and has a magnetic dipole in the X-axis direction. Similarly, the third loop antenna 25 is realized by bending a conductive plate into a roll shape, and has a magnetic dipole in the Y-axis direction. The first loop antenna, the second loop antenna, and the third loop antenna refer to “Z-axis antenna”, “X-axis antenna”, and “Y-axis antenna” in claims. In this way, the direction of the magnetic dipole of the three loop antennas 23, 24, 25 is orthogonal to the three-axis direction, and the timing at which the three loop antennas 23, 24, 25 generate magnetic fields by the power supply control antenna circuit unit 26 is set. By shifting, it is possible to generate a magnetic field in all solid angle directions. Thereby, it can suppress that the test | inspection machine 1 becomes unable to detect the magnetic field which the power supply control antenna 9 generate | occur | produces with the direction of the test | inspection machine 1 in the living body.

  In FIG. 7, magnetism is generated by the three antennas 23, 24, and 25. However, the power supply control antenna 9 may be realized by only one antenna in favor of downsizing. FIG. 7 illustrates the configuration of the power supply control antenna 9 on the assumption that the operation of the inspection machine 1 is controlled by a magnetic field. However, when the operation of the inspection machine 1 is controlled using light, the power supply control antenna 9 is controlled. The antenna 9 is embodied by a light emitting element such as an LED.

  8 to 13, the operation steps of the power control antenna and the biopsy system of the present invention will be described in detail.

  FIG. 8 shows a block diagram of the power supply control antenna 9. Selection of the first loop antenna 23, the second loop antenna 24, and the third loop antenna 25 in FIG. 8 is performed by the power control antenna switch 27. The power control antenna switch 27 is controlled by the voltage value of the power on signal or the power off signal transmitted from the power control unit 13. A part of the power-on signal or the power-off signal transmitted from the power control unit 13 is sent to the voltage determination unit 28, where the voltage value is detected. Based on this voltage value, the power control antenna switch 27 recognizes the loop antenna to be selected. As shown in FIG. 9, for example, the power control antenna switch 27 selects the first loop antenna 23 when the voltage value of the power-on signal or the power-off signal is V1, and when the voltage value is V2, the power control antenna switch 27 selects the first loop antenna 23. The two-loop antenna 24 is selected, and if the voltage value is V3, the third loop antenna 25 is selected.

  After transmitting the power-on signal with the voltage value V1, a certain time is left until the power-on signal with the voltage value V2 is transmitted. This is because the inspection machine 1 is operated by the magnetic field generated from the power control antenna by the power-on signal. This is for determining whether or not the high-frequency signal from the inspection machine 1 can be received by the extracorporeal antenna 10. When a high-frequency signal from the inspection machine 1 is detected, a control signal for stopping transmission of a new power-on signal is transmitted from the system control unit 17 to the power control unit 13, and the power control unit 13 is turned on. Stop signal transmission.

  The magnetic field intensity generated by each loop antenna 23, 24, 25 is proportional to the amount of current flowing through the loop antenna 23, 24, 25, so that the current adjustment resistor 29 attached immediately below each loop antenna 23, 24, 25 is used. Adjust the amount of current.

  FIG. 10 shows an example when the power control antenna 9 is also used as the extracorporeal antenna 10. In FIG. 10, the power-on signal or the power-off signal transmitted from the power control unit 13 is supplied to the coaxial cable 12 via the high frequency signal cutoff inductor 30. This power-on signal or power-off signal is not transmitted to the signal receiving unit 14 due to the DC cut capacitor 31 and is not directly supplied to the power control antenna switch 27. As a result, most of the power-on signal or power-off signal is supplied to the current adjustment resistor 29 via the high-frequency signal cutoff inductor, and the other power-on signal or power-off signal is supplied to the voltage determination unit 28. Become. The voltage determination unit 28 determines the voltage value of the power-on signal or the power-off signal, and sends an antenna switching control signal so that the power control antenna switch 27 selects a desired loop antenna based on the value. The current value for generating the magnetic field supplied to each loop antenna 23, 24, 25 is adjusted by the current adjustment resistor 29. As shown in FIG. 10, the current adjustment resistor 29 is devised so as not to be disposed on a line through which a high-frequency signal passes, and thereby, an advantageous effect that the reception sensitivity of the high-frequency signal from the inspection machine 1 is not deteriorated. Is obtained.

  A float balun 32 is connected immediately below each loop antenna 23, 24, 25, so that the coaxial cable 12 does not operate as an antenna when receiving a high-frequency signal from the inspection machine. In the embodiment of FIG. 10, by using the float balun 32, it is possible to supply a direct current to each loop antenna.

  By configuring the extracorporeal unit as shown in FIG. 10, the power supply control antenna 9 can be used as the extracorporeal antenna 10 and the performance of the extracorporeal unit can be improved.

  FIG. 11 also shows an example of the power control antenna when the power control antenna 9 is also used as the extracorporeal antenna 10. The difference in utility between the power control antenna of FIG. 11 and the power control antenna of FIG. 10 is that the current value supplied when each loop antenna 23, 24, 25 generates a magnetic field can be adjusted for each antenna. The NF characteristic is excellent because of the low-noise amplifier 33 attached immediately below the power control antenna switch 27.

  The current value that flows when each of the loop antennas 23, 24, and 25 generates a magnetic field can be adjusted separately by the first current adjustment resistor 34, the second current adjustment resistor 35, and the third current adjustment resistor 36, respectively. Yes, it is possible to set the magnetic field intensity generated by each loop antenna to the same value, and to optimally design the inspection machine so that it can start operation when it passes directly under the power control antenna 9. It becomes possible.

  An example of a power-on signal or a power-off signal for controlling the power control antenna switch 27 of the power control antenna shown in FIGS. 10 and 11 is shown in FIG. 9 is different from that shown in FIG. 9 in that the voltage value is V4 in order to operate the power supply control antenna switch 27 in the periods t3, t5, and t7. This is because a high-frequency signal received by the first loop antenna 23, the second loop antenna 24, or the third loop antenna 25 may pass through the power control antenna switch 27 during the periods t3, t5, and t7. . Further, when the voltage determination unit 28 detects the voltage value of V4, the voltage determination unit 28 selects the loop antenna that has generated the magnetic field for starting the operation of the inspection machine 1 immediately before. A control signal is sent to the switch 27. Similarly, power for operating the low noise amplifier 33 is supplied only during the periods t3, t5, and t7.

  When the signal receiving unit 14 detects a high-frequency signal from the inspection machine during the periods t3, t5, and t7, the power-on signal or the power-off signal is not transmitted from the power control unit 13 thereafter. In addition, since it is only the periods t3, t5, and t7 that the signal receiving unit 14 confirms the presence or absence of the high-frequency signal from the inspection machine 1, the operation of the signal reception unit 14 is performed until the inspection machine 1 starts its operation. If only the period is limited, it is possible to prevent the battery 18 in the extracorporeal unit from being wasted.

  The operation of the extracorporeal unit is shown in FIG. A power-on signal 37 is transmitted from the power supply control unit 13 periodically (for example, every 5 minutes), and after a certain time, the inspection machine starts to operate and receives a high-frequency signal from the inspection machine by the external antenna. The transmission of the power-on signal is stopped.

  When the inspection machine 1 shown in FIG. 1 starts to operate, converts biological information into a high-frequency signal and transmits the high-frequency signal from the inspection machine antenna 8, the inspection machine antenna 8 generates a large magnetic field in the vicinity thereof. It is expected to occur. It is conceivable that the magnetic sensor 3 detects this magnetic field and causes the power switch 2 to malfunction. Accordingly, the power switch is arranged by arranging the axial direction in which the magnetic detection sensitivity of the magnetic sensor 3 is maximum and the direction of the magnetic dipole of the inspection machine antenna 8 not to be parallel (ideally orthogonal). It is also an effective measure to avoid the second malfunction. Once the magnetic sensor 3 detects magnetism and the power switch 2 supplies the power of the battery 4 to each block, the power switch 2 supplies power even if the magnetic sensor 3 detects magnetism again. It is also an effective measure not to stop the system.

  The living body inspection system of the present invention can stop the operation of the inspection machine up to a predetermined inspection site with a simple system configuration, obtain biological information of the predetermined inspection site, and reduce the battery life of the inspection machine. Can be extended. For this reason, the present invention is optimal for use in a medical device such as a small capsule endoscope that can easily acquire biological information inside the human body by a person drinking a capsule inspection machine.

The block diagram of the test | inspection machine in the biopsy system of Embodiment 1 of this invention External view of external unit in the biopsy system Block diagram of the system control unit in the biopsy system Arrangement on the human body of the power control antenna and the external antenna in the same biological examination system Arrangement on the human body of the power control antenna and the external antenna in the same biological examination system Arrangement on the human body of the power control antenna and the external antenna in the same biological examination system External view of power supply control antenna in the biomedical inspection system Block diagram of power supply control antenna in the same biopsy system The figure which shows the mode of a power-on signal or a power-off signal Block diagram of power supply control antenna in the same biopsy system Block diagram of power supply control antenna in the same biopsy system The figure which shows the mode of a power-on signal or a power-off signal The figure which shows the mode of operation | movement of the external unit in the biopsy system Block diagram showing a conventional biopsy system

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Inspection machine 2 Power switch 3 Magnetic sensor 4, 18 Battery 5 Biosensor 6 Biological information processing part 7 RF transmitter 8 Inspection machine antenna 9 Power supply control antenna 10 External antenna 11 System control unit 12 Coaxial cable 13 Power supply control part 14 Signal reception Unit 15 Memory 16 External antenna switch unit 17 System control unit 27 Power control antenna switch 28 Voltage determination unit 32 Float balun 33 Low noise amplifier

Claims (14)

An inspection machine that moves along a predetermined path inside the living body, inspects a predetermined part in the predetermined path, and transmits information on the inspected predetermined part to the outside of the living body via an inspection apparatus antenna, and the corresponding to the predetermined part An extracorporeal unit having an extracorporeal antenna disposed outside the living body and receiving a signal including information on the predetermined part from the inspection machine,
The extracorporeal unit has a power control unit and a power control antenna disposed outside the living body corresponding to the predetermined part or outside the living body corresponding to the predetermined part in the predetermined route,
The power control unit transmits a power-on signal of the inspection machine via the power control antenna at an arbitrary time interval,
The said test machine is a biological test system which has a power switch which turns on the power supply of the said test machine, after receiving the said power-on signal from the said power supply control part. The biopsy system according to claim 1, wherein the operation of the power switch is performed by detecting magnetism. The power supply control antenna includes an X-axis antenna having a magnetic dipole in the X-axis direction, a Y-axis antenna having a magnetic dipole in the Y-axis direction, and a Z-axis antenna having a magnetic dipole in the Z-axis direction. The biopsy system described. The biopsy system according to claim 1, wherein the power control unit stops transmission of the power-on signal when the power of the testing machine is turned on. The extracorporeal unit has a signal receiving unit that processes information from the inspection device received by the extracorporeal antenna, and the signal receiving unit transmits a power-on signal via the power control antenna. The living body inspection system according to claim 1, wherein the presence or absence of information from the inspection machine is confirmed. The biopsy system according to claim 1, wherein the power switch maintains a power-on state after the power of the testing machine is turned on. The biopsy system according to claim 1, wherein the power control antenna is also used as the extracorporeal antenna. The biopsy system according to claim 3, wherein the X-axis antenna, the Y-axis antenna, and the Z-axis antenna transmit power-on signals at different timings. The power control antenna includes an antenna changeover switch that switches between the X-axis antenna, the Y-axis antenna, and the Z-axis antenna, and a potential determination unit that is connected to the antenna changeover switch. The biopsy system according to claim 8, wherein the potential determination unit determines a potential of a power-on signal transmitted from the power control unit. The biopsy system according to claim 1, wherein the power switch is constituted by a magnetic sensor, and an axial direction in which the magnetic detection sensitivity of the magnetic sensor is maximized and a direction of a magnetic dipole included in the inspection machine antenna are different. The living body inspection system according to claim 1, wherein the power control antenna is a loop antenna. 8. The biopsy system according to claim 7, wherein the power control antenna is constituted by a loop antenna, and a float balun is attached to the power control antenna. A power-off signal is transmitted from the power control unit after the inspection machine is turned on, and the power switch turns off the inspection machine after the inspection machine receives the power-off signal. Item 2. The biological examination system according to Item 1. The power switch is turned on by the power switch after receiving a power-on signal from the power control unit after the power of the inspection machine is turned off. Biopsy system.

Images