TWM491448U - Medical implantation device and its system - Google Patents

Description

Medical implant device and system thereof

A medical implant device, and more particularly a medical implant device for implanting a human body and providing wireless charging and a system therefor.

The sophisticated technology of precision micro-process has enabled the miniaturization of medical instruments into the human body. The research and development of researchers in this area over the past decade has made the clinical application of implantable medical components increasingly recognized worldwide. Active implantable medical components, such as implantable nerve electrical stimulators, blood glucose sensors, or heart rate regulators, require a power source to operate, and battery application is a method. However, micro-batteries can provide a short-lived power supply that is not suitable for use in the above-described implantable medical components.

Researchers have chosen to provide power by means of wireless power transmission. Although the power efficiency of wireless power is far less than that of wired power, this technology plays an important role in implantable medical components, for continuous operation and requires batteries. Implantable medical components provide wireless charging, which in turn reduces the risk of patient failure due to battery failure, or the need to re-extract without power, greatly extending the life of implantable medical components.

Resonant inductive coupling is widely used in near-field radio energy transmission. Both the transmitting end and the receiving end have LC resonance architecture, which makes the transmitting end more prone to high power. Variable current, thereby on the coil Producing a corresponding magnetic flux also makes it easier for the receiving end to get the energy delivered by the transmitting end.

When using this technique in implantable medical components, the receiving coil in the implantable medical component must receive the maximum energy in parallel with the transmitting coil of the external control component, and receive energy if the receiving coil is perpendicular to the transmitting coil. Reduced, resulting in implantable medical components may not work. Therefore, the depth of the implantable medical component in the human body affects the distance between the receiving coil and the transmitting coil, and the alignment is not easy. Therefore, when the external control element outputs a fixed power, it is easy to cause the implanted medical element to obtain different power due to the influence of the two coil distance or the alignment angle. It is possible that the temperature of the implantable medical component rises due to excessive power, or even exceeds the maximum voltage limit of the implantable medical component, causing the circuit to be damaged. Or it may be that the implanted medical components are not working properly due to the low power. Therefore, control of transmission power is an important issue.

In view of the above problems, the present invention provides a medical implant device and a system thereof for monitoring the voltage or temperature of a medical implant device, and can instantly adjust the output power of the external control device to improve the conventional technology to output only a fixed power. The problem.

The medical implant device disclosed in the present invention is used for implanting a human body and wirelessly charging the medical implant device with an external control device. The medical implant device includes an induction coil, a rectifier, and a detector. , a controller and a transmitter. Wherein, the induction coil receives an alternating electromagnetic field of the external control device. The rectifier is electrically connected to the induction coil, and the rectifier converts the alternating electromagnetic field into a continuous current. The detector is electrically connected to the rectifier, and the detector detects a voltage value of the direct current and generates a detection signal. The controller is electrically connected to the detector and receives the detection signal, and generates a first status information according to the detection signal. Transmitter electrical Connected to the controller, the controller transmits status information back to the external control unit via the transmitter.

The medical implant system disclosed in the present invention includes an external control device and a medical implant device. The external control device has an induction coil, a power amplifier, a controller and a human machine interface. The power amplifier of the external control device is electrically connected to the induction coil, and the power amplifier drives the induction coil to resonate to generate an alternating electromagnetic field. The controller of the external control device is electrically connected to the power amplifier, and the controller transmits an operating frequency to the power amplifier. The human-machine interface of the external control device is electrically connected to the controller, and the human-machine interface is for the user to input parameters to the controller.

The medical implant device is for implanting a human body, and includes an induction coil, a rectifier, a detector, a controller and a transmitter. Wherein, the induction coil receives an alternating electromagnetic field of the external control device. The rectifier is electrically connected to the induction coil, and the rectifier converts the alternating electromagnetic field into a continuous current. The detector is electrically connected to the rectifier, and the detector detects a voltage value of the direct current and generates a detection signal. The controller is electrically connected to the detector and receives the detection signal, and generates a first status information according to the detection signal. The transmitter is electrically connected to the controller, and the controller transmits the status information to the external control device through the transmitter.

The effect of the novel is that the detector of the medical implant device can instantly detect the voltage and transmit the detection voltage to the external control device through wireless transmission, so that the external control device can instantly adjust the output of the power amplifier. power. In this way, the medical implant device is not limited by the implantation depth or the alignment angle when wirelessly charging, thereby enabling the user to operate more conveniently to achieve the desired therapeutic effect.

10‧‧‧Medical implants

11‧‧‧Induction coil

12‧‧‧Rectifier

13‧‧‧Detector

14‧‧‧ Controller

15‧‧‧Transmitter

16‧‧‧Thermal sensor

17‧‧‧Functional circuit

20‧‧‧External control device

21‧‧‧Induction coil

22‧‧‧Power Amplifier

23‧‧‧Detector

24‧‧‧ Controller

25‧‧‧Transporter

26‧‧‧Human Machine Interface

27‧‧‧Thermal sensor

Figure 1 is a block diagram of a medical implant system in accordance with the present invention.

Figure 2 is a flow chart of an external control device in accordance with the present invention.

Please refer to the schematic diagram shown in FIG. 1 , which is a block diagram of a medical implant device according to the present invention. In the embodiment illustrated in FIG. 1 , the medical implant device 10 is configured to be implanted into a human body, and the medical implant device 10 may be a heart rhythm adjustment device or a nerve stimulation device, but is not limited thereto. The medical implant device 10 can be wirelessly charged via an external control device 20.

The medical implant device 10 includes an induction coil 11, a rectifier 12, a detector 13, a controller 14, a transmitter 15, a thermal sensor 16, and a functional circuit 17. The induction coil 11 receives an alternating electromagnetic field of the external control device 20. The rectifier 12 is electrically connected to the induction coil 11 and converts the alternating electromagnetic field into a constant current. The detector 13 is electrically connected to the rectifier 12 and detects a voltage value V _{RECT of the} direct current and generates a detection signal. The controller 14 is electrically connected to the detector 13 and receives the detection signal of the detector 13 and generates a first status information according to the detection signal. The transmitter 15 is electrically connected to the controller 14 and receives the first status information and transmits it back to the external control device 20. The thermal sensor 16 is electrically connected to the controller 14 to sense a temperature value of the medical implant device 10 and generate an inductive signal to the controller 14. The functional circuit 17 is electrically connected to the controller 14, and the functional circuit 17 can be, but not limited to, a circuit design such as rhythm regulation, nerve stimulation, and the like.

It should be noted that the controller 14 can receive the detection signal of the detector 13 and generate the first status information according to the detection signal. Similarly, the controller 14 also receives the sensing signal of the thermal sensor 16, and generates a second status information according to the sensing signal. In addition, the function circuit 17 transmits a therapeutic data value obtained by the operation to the controller 14, so that the controller 14 generates a third status information based on the treatment data value. Therefore, in this embodiment, the status information may be a detector. The magnitude of the detected power, or the temperature value sensed by the thermal sensor 16, or the value of the therapeutic data obtained by the operation of the functional circuit 17. The status information is transmitted back to the external control device 20 by the controller 14 of the medical implant device 10 by means of the transmitter 15 in a wireless transmission manner.

In the present embodiment, the medical implant device 10 is implanted inside the human body, and wireless power is supplied to the medical implant device 10 by the external control device 20. The external control device 20 includes an induction coil 21, a power amplifier 22, a detector 23, a controller 24, a transmitter 25, a human interface 26 and a thermal sensor 27. Please refer to Figure 2 for a flow chart of the new external control unit. As can be seen from FIG. 2, the external control device 20 of the present invention includes the following steps: Step 300: Initialize the system and operate by inputting parameters through the human interface 26; Step 310; Start the power amplifier 22 to start according to the input parameters. Step 320: Detect whether the temperature and power consumption of the power amplifier 22 is normal; if it is an abnormal state, go to step 330; if it is a normal state, go to step 340; Step 330: Stop the power amplifier 22, and return to the step Step 340: Receive status information of the medical implant device 10, and update the display on the human machine interface 26; if the abnormality is received, return to step 330; if the reception is normal, proceed to step 350; Step 350: Viewing the status information returned by the medical implant device 10; if it is the power tracking state, proceeds to step 360; if it is in the standby state, proceeds to step 370; if it is the treatment state, proceeds to step 380; step 360: according to the medical implant device 10 detected voltage values to adjust the operating frequency of the power amplifier 22, and return to step 320; step 370: through the human machine 26 or to give instructions to the medical implant device setting parameters 10, and return to step 320; step 380: waiting for the end of treatment, and return to step 320.

In step 300, the user can operate through the human interface 26 of the external control device 20 to initialize the system settings of the external control device 20. The required set parameters are entered into the controller 24 by the human machine interface 26.

In step 310, the controller 24 receives the input parameters and generates a corresponding operating frequency to the power amplifier 22 in accordance with the input parameters, thereby initiating the power amplifier 22 to begin operation. It should be noted that the induction coil 11 of the medical implant device 10 is a series LC resonant cavity, and the induction coil 21 of the external control device 20 is also a series LC resonant cavity, all having the same resonant frequency, for example, but not limited to the following formula :

Therefore, the external control device 20 can drive the induction coil 21 through the power amplifier 22 to perform LC resonance. In the present embodiment, the power amplifier 22 can be a Class D Power Amplifier, and the operating frequency of the power amplifier 22 is provided by the controller 24. In this way, the time-varying current on the induction coil 21 can be made to generate a magnetic flux. When the operating frequency is close to the resonant frequency, the stronger the current generated by the induction coil 21, the greater the transmitted power.

In step 320, the power consumption of the supply voltage and the supply current of the power amplifier 22 can be calculated by the detector 23, and a detection signal is generated to the controller 24, thereby limiting the maximum power of the power amplifier 22. In addition, it is also detected by the thermal sensor 27 whether the temperature of the power amplifier 22 [please confirm] is kept below the preset value. If the power consumption or temperature of the power amplifier 22 is higher than the preset value, it is determined that the power amplifier 22 is in an abnormal state, and the process proceeds to step 330. If the power consumption or temperature of the power amplifier 22 is lower than a preset value, the power amplifier is determined. 22 is in a normal state, and proceeds to step 340.

In step 330, since the power consumption or temperature of the power amplifier 22 is higher than the preset value, it is determined to be an abnormal state. At this time, the controller 24 turns off the operation of the power amplifier 22, thereby stopping the induction coil 21 from acting and returning. Step 300 performs system initialization.

In step 340, when the induction coil 11 of the medical implant device 10 obtains an alternating electromagnetic field, the rectifier 12 can rectify and stabilize the alternating electromagnetic field to be continuously galvanically charged to supply direct current power to operate the components of the medical implant device 10. . For example, the detector 13 of the medical implant device 10 can detect the voltage value V _{RECT of the} direct current. The thermal sensor 16 can sense the temperature value of the medical implant device 10. The functional circuit 17 can communicate the manipulated therapy data values to the controller 14. The controller 14 converts the first state information, the second state information, and the third state information according to the voltage value, the temperature value, or the treatment data value, and then transmits the wireless device to the transmitter 15 of the medical implant device 10 in a wireless manner. The above state information is transmitted to the transmitter 25 of the external control device 20, so that the controller 24 of the external control device 20 can receive the relevant state information about the voltage value, the temperature value or the treatment data value of the medical implant device 10, and then The relevant state information of the medical implant device 10 is updated by the human interface 26 of the external control device 20. It should be noted that if the external control device receives an abnormality, it returns to step 330; if the external control device 20 receives the normal, it proceeds to step 350.

In step 350, the user can view the status information returned by the medical implant device 10 through the human interface. If the human machine interface 26 is in the power tracking state, the process proceeds to step 360. If the human machine interface 26 is in the standby state, the process proceeds to step 370. If the human interface 26 is displayed as a treatment state, then the process proceeds to step 380.

In step 360, if the voltage value V _{RECT of the} medical implant device 10 is not within a range of the preset upper limit voltage V _HT to the lower limit voltage V _LT , for example, the voltage value V _{RECT is} greater than the upper limit voltage V _HT , the user operable The machine interface 26 commands the controller 24 to cause the controller 24 to generate a reduced power signal to the power amplifier 22, leaving the operating frequency of the power amplifier 22 away from the resonant frequency. On the other hand, if the voltage value V _{RECT is} less than the lower limit voltage V _LT , the command is given to the controller 24 to generate a signal for increasing the power to the power amplifier 22, so that the operating frequency of the power amplifier 22 is close to the resonant frequency. After completing step 360, it returns to step 320. [Note: It is recommended to provide the specific values of the upper limit voltage V _HT and the lower limit voltage V _LT ]

In step 370, if the voltage value V _RECT detected by the medical implant device 10 is within the range of the upper limit voltage V _HT to the lower limit voltage V _LT , it indicates that the transmission power of the power amplifier 22 is normal, and the user can operate the human machine. The interface 26 provides instructions or settings to the controller 24 such that the controller 24 generates a status message for the medical implant device 10 to perform a setting or operation. After completing step 370 or skipping step 370 directly, it returns to step 320.

In step 380, if the voltage value V _RECT detected by the medical implant device is within the range of the upper limit voltage V _HT to the lower limit voltage V _LT , it indicates that the transmission power of the power amplifier 22 is normal. The medical implant device 10 begins to enter a working state and waits for the end of the treatment or after the manual end, and returns to step 320.

Compared with the prior art, the detector 13 of the medical implant device 10 can instantly detect the voltage value of the rectifier 12 and transmit the detected voltage value to the external control device 20 through wireless transmission. The external control device 20 displays and instantly adjusts the output power of the power amplifier 22. In this way, the medical implant device 10 is not limited by the implantation depth or the alignment angle during wireless charging, thereby enabling the user to operate more conveniently to achieve the desired therapeutic effect.

10‧‧‧Medical implants

11‧‧‧Induction coil

12‧‧‧Rectifier

13‧‧‧Detector

14‧‧‧ Controller

15‧‧‧Transmitter

16‧‧‧Thermal sensor

17‧‧‧Functional circuit

20‧‧‧External control device

21‧‧‧Induction coil

22‧‧‧Power Amplifier

23‧‧‧Detector

24‧‧‧ Controller

25‧‧‧Transporter

26‧‧‧Human Machine Interface

27‧‧‧Thermal sensor

Claims (10)

A medical implant device for implanting a human body and wirelessly charging the medical implant device with an external control device, the medical implant device comprising: an induction coil for receiving the external control device An alternating electromagnetic field; a rectifier electrically connected to the induction coil, the rectifier for converting the alternating electromagnetic field into a continuous current; a detector electrically connected to the rectifier, the detector for detecting a voltage value of the direct current And generating a detection signal; a controller electrically connected to the detector, the controller is configured to receive the detection signal, and generate a first state information according to the detection signal; and a transmitter, electricity The controller is connected to the controller, and the controller returns the status information to the external control device by the transmitter. The medical implant device of claim 1, wherein the medical implant device further comprises a thermal sensor electrically connected to the controller, the thermal sensor is configured to sense a temperature value of the medical implant device, and An inductive signal is generated to the controller, and the controller generates another second status information according to the temperature value. The medical implant device of claim 1, wherein the medical implant device further comprises a functional circuit electrically connected to the controller, wherein the functional circuit is configured to transmit a therapeutic data value obtained by the operation to the control The controller generates a third status information based on the treatment data value. A medical implant system includes: an external control device comprising: an induction coil; and a power amplifier electrically connected to the induction coil, the power amplifier is used for driving The induction coil resonates to generate an alternating current electromagnetic field; a controller electrically connected to the power amplifier, the controller is configured to transmit an operating frequency to the power amplifier; and a human machine interface electrically connected to the controller, the human machine interface For the user to input parameters to the controller; a medical implant device for implanting a human body, comprising: an induction coil for receiving the alternating electromagnetic field; and a rectifier electrically connected to the medical implant device The induction coil is configured to convert the alternating electromagnetic field into a continuous current; a detector is electrically connected to the rectifier, the detector is configured to detect a voltage value of the direct current and generate a detection signal; The controller is electrically connected to the detector, the controller of the medical implant device is configured to receive the detection signal, and generate a first state information according to the detection signal; and a transmitter electrically connected to the controller The controller of the medical implant device, the controller of the medical implant device returns the first state information to the transmitter by the transmitter of the medical implant device The control device. The medical implant system of claim 4, wherein the external control device further comprises a detector electrically connected to the controller of the external control device and the power amplifier, wherein the detector is configured to calculate the power of the power amplifier Depleting, and generating a detection signal to the controller of the external control device, the controller of the external control device adjusts the operating frequency according to the detection signal. The medical implant system of claim 4, wherein the external control device further comprises a transmitter electrically connected to the controller of the external control device, the transmitter of the external control device and the medical implant device The transmitter wirelessly transmits the first status information. The medical implant system of claim 4, wherein the external control device further comprises a thermal sensor electrically connected to the controller of the external control device, the thermal sensor of the external control device for sensing the external Controlling a temperature value of the device and generating an inductive signal to the controller of the external control device, the controller of the external control device adjusting the operating frequency according to the sensing signal. The medical implant system of claim 4, wherein the medical implant device further comprises a thermal sensor electrically connected to the controller of the medical implant device, the thermal sensor of the medical implant device being used Sensing a temperature value of the medical implant device and generating an induction signal to the controller of the medical implant device, the controller of the medical implant device generating another second state information according to the temperature value. The medical implant system of claim 4, wherein the medical implant device further comprises a functional circuit electrically connected to the controller of the medical implant device, the functional circuit is configured to operate the obtained treatment The data value is transmitted to the controller of the medical implant device, the controller of the medical implant device generating a third status message based on the therapy data value. The medical implant system of claim 4, wherein the induction coil of the medical implant device is a series LC resonant cavity, and the induction coil of the external control device is also a series LC resonant cavity, all having the same resonance frequency.