Implanted device charging heat management method, device and equipment and storage medium

Abstract

The invention discloses an implanted device charging heat management method, device and equipment and a storage medium. The method comprises the steps that under the condition that it is determined that charging preparation work of the implanted device is completed, a heat metering value sequence of the implanted device is obtained, and a residual heat metering value in a first time period is determined according to the heat metering value sequence; under the condition that the residual heat metering value is larger than the lowest preset threshold value, starting charging and energy supplementing work of the implanted device, determining an accumulated heat metering value of the implanted device in a first time period according to the detected device surface temperature of the implanted device and a preset temperature interval, and determining the accumulated heat metering value of the implanted device in a second time period according to the accumulated heat metering value. According to the accumulated heat metering value and the residual heat metering value, the wireless charging work of the implanted device is subjected to heat management, so that intelligent switching between the accumulated heat metering threshold value and the traditional instantaneous temperature threshold value can be realized, the safety and the charging efficiency are maximized, the charging interruption frequency is reduced, and the total charging time is shortened; therefore, the wireless charging experience of the user is obviously improved.

Description

Technical Field

[0001] This invention relates to the field of charging management technology for implantable medical devices, and in particular to a method, apparatus, device, and storage medium for charging thermal management of implantable devices. Background Technology

[0002] During wireless charging of active implantable medical devices such as implantable neurostimulators, the heat generated by the charging coil and circuitry can potentially cause thermal damage to surrounding tissues, making effective thermal management crucial. Currently, industry standards explicitly require protection against thermal injury to patients. Existing technologies often employ control methods based on a single instantaneous temperature threshold, such as pausing charging when the device temperature exceeds a set threshold and resuming charging once the temperature drops.

[0003] However, while such methods ensure safety, they have significant limitations. Relying on a fixed threshold, they fail to comprehensively consider the impact of individual differences in patient tissue characteristics and blood perfusion rates on heat dissipation capabilities, resulting in an overly conservative charging strategy. In practice, frequent "charging-interruption-cooling-recharging" cycles often occur, severely prolonging the overall charging process.

[0004] This technical problem not only significantly reduces charging efficiency and prolongs patient wearing and waiting time, but also causes user frustration and anxiety due to repeated interruptions, severely impacting the treatment experience and user compliance. Therefore, there is an urgent need for an intelligent thermal management solution that balances safety and charging efficiency. Summary of the Invention

[0005] This invention provides a method, apparatus, device, and storage medium for thermal management of implantable devices, enabling intelligent switching between cumulative heat measurement thresholds and traditional instantaneous temperature thresholds, maximizing safety and charging efficiency, reducing the number of charging interruptions, shortening the total charging time, and thus significantly improving the user's wireless charging experience.

[0006] According to one aspect of the present invention, a method for thermal management of an implantable device during charging is provided. The method includes:

[0007] Once it is determined that the charging preparation work of the implanted device is completed, the heat measurement value sequence of the implanted device is obtained, and the remaining heat measurement value in the first time period is determined according to the heat measurement value sequence, wherein the heat measurement value sequence includes heat measurement values ​​of multiple consecutive historical time periods starting from the first time period.

[0008] When the remaining heat measurement value is greater than the minimum preset threshold, the charging and energy replenishment of the implanted device is started. Based on the detected surface temperature of the implanted device and the preset temperature range, the cumulative heat measurement value of the implanted device in the first time period is determined. Based on the cumulative heat measurement value and the remaining heat measurement value, thermal management is performed on the wireless charging operation of the implanted device. The two temperature endpoints of the preset temperature range are a first temperature threshold and a second temperature threshold, respectively, and the second temperature threshold is greater than the first temperature threshold.

[0009] According to another aspect of the present invention, a charging thermal management device for an implantable device is provided. The device includes:

[0010] A heat measurement value determination module is used to acquire the heat measurement value sequence of the implanted device when it is determined that the charging preparation work of the implanted device is completed, and to determine the remaining heat measurement value in the first time period according to the heat measurement value sequence, wherein the heat measurement value sequence includes heat measurement values ​​of multiple consecutive historical time periods starting from the first time period.

[0011] The device charging management module is used to initiate the charging and energy replenishment of the implanted device when the remaining heat metering value is greater than a minimum preset threshold. Based on the detected surface temperature of the implanted device and a preset temperature range, the module determines the cumulative heat metering value of the implanted device in the first time period, and performs thermal management on the wireless charging operation of the implanted device based on the cumulative heat metering value and the remaining heat metering value. The two temperature endpoints of the preset temperature range are a first temperature threshold and a second temperature threshold, respectively, and the second temperature threshold is greater than the first temperature threshold.

[0012] According to another aspect of the present invention, an electronic device is provided, the electronic device comprising:

[0013] At least one processor; and

[0014] A memory communicatively connected to the at least one processor; wherein,

[0015] The memory stores a computer program that can be executed by the at least one processor, the computer program being executed by the at least one processor to enable the at least one processor to perform the implantable device charging thermal management method according to any embodiment of the present invention.

[0016] According to another aspect of the present invention, a computer-readable storage medium is provided, the computer-readable storage medium storing computer instructions for causing a processor to execute and implement the implantable device charging thermal management method according to any embodiment of the present invention.

[0017] The technical solution of this invention involves acquiring a thermal measurement value sequence of the implanted device after confirming that the charging preparation work of the implanted device is complete, and determining the remaining thermal measurement value in a first time period based on the thermal measurement value sequence. If the remaining thermal measurement value is greater than a minimum preset threshold, the charging replenishment operation of the implanted device is initiated. Based on the detected surface temperature of the implanted device and a preset temperature range, the cumulative thermal measurement value of the implanted device in the first time period is determined. Thermal management of the wireless charging operation of the implanted device is then performed based on the cumulative thermal measurement value and the remaining thermal measurement value. By intelligently switching between a charging management strategy based on thermal measurement value thresholds and a traditional charging management strategy based on instantaneous temperature thresholds, the problem of unnecessary charging interruption cycles caused by using only instantaneous temperature threshold control is solved. This also prevents the potential risk of thermal damage caused by thermal measurement, thereby maximizing safety and charging efficiency, reducing the number of charging interruptions, shortening the total charging time, and significantly improving the user's wireless charging experience.

[0018] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a flowchart of a charging thermal management method for an implantable device according to an embodiment of the present invention;

[0021] Figure 2 This is a flowchart of a charging thermal management method for an implantable device according to an embodiment of the present invention;

[0022] Figure 3 This is a flowchart of a charging thermal management method for an implantable device according to an embodiment of the present invention;

[0023] Figure 4 This is a flowchart of a charging thermal management method for an implantable device according to an embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram of a charging thermal management method for an implantable device according to an embodiment of the present invention;

[0025] Figure 6 This is a structural diagram of a charging thermal management device for an implantable device according to an embodiment of the present invention;

[0026] Figure 7 This is a schematic diagram of the structure of an electronic device that implements the implantable device charging thermal management method according to an embodiment of the present invention. Detailed Implementation

[0027] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0028] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0029] The technical field and related terms of the embodiments of this application are briefly described below.

[0030] Implantable medical systems include implantable neurostimulation systems, implantable cardiac stimulation systems (also known as pacemakers), implantable drug delivery systems (IDDS), and lead transfer systems. Examples of implantable neurostimulation systems include deep brain stimulation (DBS), cortical nerve stimulation (CNS), spinal cord stimulation (SCS), sacral nerve stimulation (SNS), and vagus nerve stimulation (VNS).

[0031] Implantable neurostimulation systems consist of a stimulator implanted in the patient's body (i.e., an implantable neurostimulator) and a programmed device placed outside the patient's body. In other words, the stimulator is a medical device, or medical devices include stimulators. Related neuromodulation techniques primarily involve stereotactic surgery to implant electrodes (e.g., electrode wires) at specific sites (target points) in the body's tissues. Discharge pulses are then delivered through these electrodes to the target points, modulating the electrical activity and function of corresponding neural structures and networks, thereby improving symptoms and alleviating pain.

[0032] Stimulators generally include rechargeable stimulators and non-rechargeable stimulators. Rechargeable stimulators typically use an external charger to wirelessly charge an internal rechargeable battery via the principle of magnetic field lines. Specifically, the charger has a transmitting circuit, including a transmitting coil, to generate an alternating magnetic field. The stimulator has a charging circuit to charge the rechargeable battery, specifically including at least a receiving coil. When the charger and stimulator are successfully aligned and the charger emits the alternating magnetic field, the receiving coil generates current according to the principle of magnetic field lines to charge the rechargeable battery, thus completing the recharging operation of the rechargeable stimulator.

[0033] As an example, a DBS includes an IPG (Implantable Pulse Generator), extension leads, and electrode leads. The IPG is connected to the electrode leads via the extension leads. The IPG is implanted in the patient's body, for example, in the chest or other internal locations.

[0034] As another example, DBS includes an IPG and electrode leads, with the IPG directly connected to the electrode leads. The IPG is implanted in the patient's head, for example, by creating a groove in the patient's skull and then placing the IPG in the groove. In this case, the IPG may not protrude from the outer surface of the skull, or it may protrude partially from the outer surface of the skull.

[0035] In this system, the IPG responds to programmed commands sent by a programmable device, using a sealed battery and circuitry to deliver controllable electrical stimulation (or electrical stimulation energy) to tissues within the body. The IPG delivers one or more controllable electrical stimuli to specific areas of tissue via electrode leads.

[0036] In some embodiments, the extension wire is used in conjunction with the IPG as a medium for transmitting electrical stimulation, thereby transmitting the electrical stimulation generated by the IPG to the electrode wire.

[0037] In some embodiments, electrical stimulation can be delivered in the form of a pulsed signal or a non-pulsed signal. For example, electrical stimulation can be delivered as a signal with various waveform shapes, frequencies, and amplitudes. Therefore, non-pulsed signal electrical stimulation can be a continuous signal, which can have a sinusoidal waveform or other continuous waveforms.

[0038] After receiving electrical stimulation from the IPG or extension leads, the electrode leads deliver the stimulation to specific areas of tissue within the body via multiple electrode contacts. The stimulator may have one or more electrode leads on one or both sides, with multiple electrode contacts on each lead. These contacts may be evenly or non-uniformly arranged circumferentially on the electrode leads. As an example, the electrode contacts may be arranged in a 4x3 array (a total of 12 electrode contacts) circumferentially on the electrode leads. The electrode contacts may include stimulating electrode contacts and / or collecting electrode contacts. The electrode contacts may be in shapes such as sheet-like, ring-like, or dot-like.

[0039] In some embodiments, the stimulated tissue may be the patient's brain tissue, and the stimulated site may be a specific location within the brain tissue. Generally, the stimulated site differs depending on the patient's disease type, and the number of stimulation contacts (single-source or multi-source), the application of one or more specific electrical stimulation pathways (single-channel or multi-channel), and the stimulation parameters (values) also vary.

[0040] Figure 1 This is a flowchart illustrating a method for thermal management during the charging of an implantable device according to an embodiment of the present invention. This embodiment is applicable to situations where thermal damage to biological tissues is caused by heat transfer during the charging process of an implantable medical device. This method can be executed by an implantable device charging thermal management device, which can be implemented in hardware and / or software and can be configured in an electronic device. Figure 1 As shown, the method includes:

[0041] S101. When it is determined that the charging preparation work of the implanted device is completed, the heat measurement value sequence of the implanted device is obtained, and the remaining heat measurement value in the first time period is determined according to the heat measurement value sequence.

[0042] Regarding the charging management of implantable devices, it's important to clarify that implantable pulse generators (stimulators), due to limitations in size and other technical factors, often employ wireless charging for power replenishment. However, wireless charging inevitably generates heat. Therefore, to balance charging efficiency with preventing thermal damage to the surrounding biological tissues, effective thermal management during wireless charging is crucial, and this is explicitly required by national industry standards.

[0043] According to Chapter 17.1 "Protection against thermal injury to patients" of "YY0989.3-2023 Surgical implants - Active implantable medical devices - Part 3: Implantable neurostimulators":

[0044] In the absence of external influences, the implanted portion of an insulated airway (INS) that is not expected to provide heat to the patient should meet at least one of the following conditions during implantation and normal operation (including charging):

[0045] a) The outer surface temperature does not exceed 39 degrees Celsius, or

[0046] b) The thermal dose received by any tissue must not exceed the CEM43 dose threshold in Table 1, or

[0047] c) The manufacturer can demonstrate that it is reasonable for the temperature rise to exceed the threshold shown in Table 101 for a specific application.

[0048]

[0049] Table 1

[0050] Current technologies only employ instantaneous temperature threshold control under condition a), which can effectively protect patient tissues from thermal damage. However, this requires multiple charging-overheating-cooling-charging cycles to recharge the implanted device. The entire recharge process is time-consuming, causing user anxiety and reducing user experience.

[0051] Based on this, the present invention updates the software built into the pulse generator to realize the integral calculation of the heat measurement value of the heating process according to industry standards, and compares the heat measurement value with the threshold in the standard to automatically select and switch the charging strategy, thereby improving wireless charging efficiency and enhancing user experience while ensuring the protection of patients from heat injury.

[0052] In this invention, the implantable device can refer to an implantable medical device that supports wireless charging, such as an implantable pulse generator (stimulator). The completion of the charging preparation for the implantable device can include the successful establishment of an energy transfer connection between the external charging device and the implantable device, or the external charging device's indicator light displaying a "ready" message. The calorimetric value sequence can refer to the various calorimetric values ​​emitted by the implantable device or received by the corresponding biological tissue within multiple consecutive historical time periods.

[0053] The heat measurement value sequence includes heat measurement values ​​from multiple consecutive historical time periods starting from the first time period. For example, the time period can be a time period in minutes, hours, or days. The first time period can refer to the current time period. In this invention, the time period is preferably a time period in days, so the first time period refers to the current day's time period, and the time period included in the heat measurement value sequence can include three consecutive time periods: the current day, yesterday, and the day before yesterday. The heat measurement value sequence in this invention can also include multiple consecutive time periods of two days or more than three, which can be set according to actual conditions. Accordingly, the heat measurement values ​​included in the heat measurement value sequence can include heat measurement values ​​from the current day, yesterday, and the day before yesterday's time periods.

[0054] The residual calorific value can refer to the maximum residual calorific value that the biological tissue implanted with the implanted device can still accept within the first time period. If the biological tissue receives a calorific value exceeding the residual calorific value within the first time period, the biological tissue will suffer irreversible heat transfer damage.

[0055] Biological tissues can be understood as possessing a certain heat dissipation capacity, which varies among different tissues. When biological tissues continuously receive heat energy for heat transfer, they can withstand the heat energy more effectively over a certain period of time through continuous heat dissipation, thus mitigating the thermal damage caused by heat transfer. This application calculates the remaining calorific value of the biological tissue over a certain period of time to determine the safe range for the release of the implanted device's own heat energy during subsequent wireless charging, thereby enabling more intelligent and efficient charging control. Compared to charging control based solely on a temperature threshold, this application better considers the thermal transfer capacity of the biological tissue itself while also taking charging efficiency into account.

[0056] Specifically, when the charging management device of the implanted device detects that the charging preparation work of the implanted device is completed, it obtains the heat measurement value sequence corresponding to the implanted device at the current moment, calculates the total heat measurement value dissipated by the implanted device through the heat measurement value sequence, and then calculates the remaining heat measurement value that the implanted device can dissipate within the first time period based on the total heat measurement value.

[0057] For example, the heat measurement values ​​in the heat measurement value sequence are updated based on the division time of the time period; the update process of the heat measurement value sequence includes: at the time of the time period switching, updating the heat measurement value of the first time period in the heat measurement value sequence to zero; determining the continuous historical time periods starting from the first time period, and the heat measurement value corresponding to each historical time period; and determining the updated heat measurement value sequence based on the first time period and the heat measurement values ​​corresponding to the continuous historical time periods starting from the first time period.

[0058] It should be noted that the heat measurement values ​​in the heat measurement value sequence are updated according to the division time of the time period. For example, if the time period is in days and the division time of the time period is midnight of each day, then the heat measurement value sequence is updated at midnight of each day.

[0059] This invention preferably uses a daily time period. When the time period is daily, the three values ​​(1st_CEM43 / 2nd_CEM43 / 3rd_CEM43) in the heat measurement sequence represent the accumulated heat values ​​from charging on the current day, yesterday, and the day before yesterday, respectively. At midnight each day, the accumulated heat value for the current day is updated to zero. The accumulated heat value for the current day before midnight is determined as the accumulated heat value for yesterday after midnight, and the accumulated heat value for yesterday before midnight is determined as the accumulated heat value for the day before midnight. For example, if the current day is the 20th, and the cycle switches to the 21st, the current day before midnight is the 20th, and the current day after midnight is the 21st. Before midnight, 1st_CEM43 represents the cumulative heat value for the 20th as 6; 2nd_CEM43 represents the cumulative heat value for the 19th as 5; and 3rd_CEM43 represents the cumulative heat value for the 18th as 6. When midnight is reached, the heat measurement value sequence is updated, with 1st_CEM43 representing the cumulative heat value for the 21st as 0; 2nd_CEM43 representing the cumulative heat value for the 20th as 6; and 3rd_CEM43 representing the cumulative heat value for the 19th as 5.

[0060] Through the above-mentioned technical means, this invention ensures that the accumulated heat value can be periodically reset to zero, the CEM43 thermal management solution will not permanently fail, and a self-recovery mechanism for biological tissues in response to thermal damage is realized.

[0061] For example, determining the remaining calorific value in the first time period based on the calorific value sequence includes: identifying the biological tissue into which the implantation device is implanted, and determining a tissue heat accumulation threshold that the biological tissue must not exceed; determining the total calorific value received by the biological tissue from the implantation device based on the calorific value in each time period of the calorific value sequence; and determining the remaining calorific value in the first time period based on the total calorific value received and the tissue heat accumulation threshold.

[0062] Generally, implanted devices are placed in subcutaneous fat or in the space between fat and muscle. Using skin as a relatively stringent standard, Table 1 can be used to determine the tissue heat accumulation threshold CEM43_ALL, which the tissue heat accumulation value must not exceed. The difference between this threshold and the calculated total heat accumulation value is used to determine the remaining heat accumulation value CEM43_TH that the implanted device can dissipate within the first time period, i.e., CEM43_TH = CEM43_ALL - 3rd_CEM43 - 2nd_CEM43 - 1st_CEM43.

[0063] S102. When the remaining heat measurement value is greater than the minimum preset threshold, the charging and energy replenishment of the implanted device is started. Based on the detected surface temperature of the implanted device and the preset temperature range, the cumulative heat measurement value of the implanted device in the first time period is determined. Based on the cumulative heat measurement value and the remaining heat measurement value, thermal management is performed on the wireless charging operation of the implanted device.

[0064] In one embodiment of this specification, after the external charger and the implanted device are aligned, when the implanted device determines that the remaining calorific value is greater than the minimum preset threshold, it sends a charging command to the charger. After receiving the charging command, the charger sends wireless energy to the implanted device according to preset charging parameters (such as transmission power). The receiving coil inside the implanted device receives the wireless energy and charges the rechargeable battery inside the implanted device.

[0065] In another embodiment, after the external charger is aligned with the implanted device, it sends wireless energy to the implanted device. If the implanted device determines that the remaining calorific value is greater than a minimum preset threshold, it activates its own charging circuit to receive the wireless energy and charge the rechargeable battery.

[0066] The minimum preset threshold can be set according to actual conditions to preserve the thermal damage error range of biological tissues. For example, the minimum preset threshold can be set to 0. The cumulative calorific value refers to the cumulative calorific value of the implanted device at the current moment within the first time period. It should be noted that different moments within the first time period have different cumulative calorific values. For example, if the current moment is the initial moment within the first time period, the cumulative calorific value may be 0; if the current moment is the final moment within the first time period, the cumulative calorific value may be 8.

[0067] In this invention, the preset temperature range can be determined based on the location of the implantable device within the patient's body. Different locations have different temperature adaptability and transmission capabilities; therefore, different implantation sites of the implantable device correspond to different preset temperature ranges. This ensures efficient charging while avoiding damage to the patient's body during the charging process. The two temperature endpoints of the preset temperature range are a first temperature threshold and a second temperature threshold, where the second temperature threshold is greater than the first temperature threshold.

[0068] It is worth noting that the first temperature threshold is the critical temperature at which the implanted biological tissue maintains its heat transfer capacity, and the second temperature threshold is the critical temperature at which the implanted biological tissue undergoes degeneration and damage. In other words, the first temperature threshold can be set based on the critical temperature at which the biological tissue begins to accumulate heat. The second temperature threshold can be set based on the critical temperature at which the biological tissue begins to undergo tissue degeneration and damage.

[0069] Based on this, the first temperature threshold and the second temperature threshold of the preset temperature range in this invention are preferably set as follows: the first temperature threshold is 39 degrees Celsius, and the second temperature threshold is 43 degrees Celsius. It should be noted that the preset temperature range, the first temperature threshold, and the second temperature threshold in this invention can be changed in accordance with modifications to national industry standards, or can be set independently according to actual circumstances.

[0070] For example, when the external surface temperature of the implanted device does not exceed 39 degrees Celsius, the calorimetric value of the implanted device does not need to be considered; when the external surface temperature of the implanted device exceeds 39 degrees Celsius, it means that calorimetric values ​​must be introduced and used for evaluation and control, rather than relying solely on instantaneous temperature. When the external surface temperature of the implanted device exceeds 43 degrees Celsius, reliable scientific data must be used to verify whether exceeding 43 degrees Celsius will cause irreversible damage to biological tissue. Using a more stringent temperature standard, when the temperature of the implanted device approaches or exceeds 43 degrees Celsius, the charging power should be reduced to control the rate of temperature rise.

[0071] In one embodiment of this specification, when the remaining calorific value is greater than the minimum preset threshold, it indicates that the biological tissue can continue to receive heat energy transfer and can execute the charging management strategy based on the calorific value threshold. After starting the charging and energy replenishment of the implanted device, the cumulative calorific value of the implanted device at the current moment is determined according to the different relationships between the device surface temperature and the preset temperature range within the first time period.

[0072] During continuous charging, based on the different relationships between the surface temperature of the implanted device and the preset temperature range, and according to the real-time updated cumulative heat measurement value and remaining heat measurement value, the corresponding management scheme is selected to perform thermal management of the wireless charging operation of the implanted device.

[0073] In one embodiment of this specification, when the remaining calorific value is not greater than the minimum preset threshold, it indicates that the cumulative heat energy received by the biological tissue has reached its upper limit (i.e., the calorific value emitted by the implanted device has reached the threshold of cumulative tissue heat that the biological tissue can accept). Therefore, a charging management strategy based on the calorific value threshold is not suitable. Instead, a single temperature threshold strategy (i.e., an instantaneous temperature threshold) can be used for charging management. This involves periodically or in real-time detecting the surface temperature of the implanted device and comparing it with the first temperature threshold, which is the limit value that the biological tissue can receive under the single temperature threshold charging control strategy. If the device surface temperature is greater than the first temperature threshold, charging is immediately stopped (the stimulator closes the charging circuit and notifies the charger via wireless communication). Temperature is then periodically collected, and charging is restarted only after the device surface temperature drops below the first temperature threshold (the stimulator opens the charging circuit and notifies the charger via wireless communication). This temperature monitoring and management of the implanted device is cyclically executed until the implanted device is fully charged.

[0074] Under this single temperature threshold charging control strategy, when the surface temperature of the device is greater than the first temperature threshold, the wireless charging operation of the implanted device is stopped, and when the surface temperature of the device cools down to no greater than the first temperature threshold, the wireless charging operation of the implanted device is resumed, and the temperature monitoring and management of the implanted device is performed cyclically.

[0075] The technical solution of this invention involves acquiring a thermal measurement value sequence of the implanted device after confirming that the charging preparation work of the implanted device is complete, and determining the remaining thermal measurement value in a first time period based on the thermal measurement value sequence. If the remaining thermal measurement value is greater than a minimum preset threshold, the charging replenishment operation of the implanted device is initiated. Based on the detected surface temperature of the implanted device and a preset temperature range, the cumulative thermal measurement value of the implanted device in the first time period is determined. Thermal management of the wireless charging operation of the implanted device is then performed based on the cumulative thermal measurement value and the remaining thermal measurement value. By intelligently switching between a charging management strategy based on thermal measurement value thresholds and a traditional charging management strategy based on instantaneous temperature thresholds, the problem of unnecessary charging interruption cycles caused by using only traditional instantaneous temperature threshold control is solved. This also prevents the potential risk of thermal damage due to thermal measurement, thereby maximizing safety and charging efficiency, reducing the number of charging interruptions, shortening the total charging time, and significantly improving the user's wireless charging experience.

[0076] Figure 2 This is a flowchart of a thermal management method for charging an implantable device according to an embodiment of the present invention. Based on the above embodiments, this embodiment refines the determination of the cumulative thermal value and the thermal management of the wireless charging operation of the implantable device when a charging management strategy based on a thermal measurement value threshold is executed and the device surface temperature falls within a preset temperature range. For example... Figure 2 As shown, the method includes:

[0077] S201. When it is determined that the charging preparation work of the implanted device is completed, the heat measurement value sequence of the implanted device is obtained, and the remaining heat measurement value in the first time period is determined according to the heat measurement value sequence.

[0078] S202. When the remaining heat metering value is greater than the minimum preset threshold, start the charging and energy replenishment of the implanted device, and periodically detect the surface temperature of the implanted device.

[0079] S203. If the surface temperature of the device is within the preset temperature range, calculate the first thermal value of the implanted device based on the surface temperature of the device using a thermal measurement algorithm.

[0080] The first heat value can refer to the heat value emitted during the charging process of the implanted device when the surface temperature of the device is within a preset temperature range.

[0081] For example, the heat metering algorithm is as follows:

[0082]

[0083] in, This refers to the heat measurement value; This refers to the i-th time interval in minutes; This refers to temperatures measured in degrees Celsius. The average tissue temperature within the interval; R is a parameter, where R is 0.25 when T < 43℃ and 0.5 when T > 43℃; This refers to the number of samples collected during the temperature rise period.

[0084] It is important to note that the heat measurement algorithm is only effective when the surface temperature of the device is within a certain temperature range. If the temperature is too low, the biological tissue can fully transfer the received heat to other parts by relying on its own heat transfer or heat dissipation capabilities. If the temperature is too high, the high temperature heat will directly damage the biological tissue and cause trauma. Different biological tissues have different ranges of adaptability to heat measurement values, such as between 39℃ and 57℃.

[0085] Specifically, when implementing the charging management strategy based on the heat measurement value threshold, if the device surface temperature falls within the preset temperature range, the first heat measurement value of the implanted device in this state is calculated using the heat measurement value algorithm.

[0086] S204. Update the total accumulated heat measurement value within the first time period according to the first heat measurement value to obtain the updated accumulated heat measurement value.

[0087] Specifically, the first heat measurement value is summed with the total heat measurement value accumulated within the first time period, and the summation result is updated to the cumulative heat measurement value of the implanted device in the first time period.

[0088] S205. If the surface temperature of the device is within the preset temperature range, determine whether the cumulative heat measurement value is greater than the remaining heat measurement value.

[0089] Specifically, when the surface temperature of the equipment is within the preset temperature range, after obtaining the updated cumulative heat measurement value, it is necessary to further determine whether the cumulative heat measurement value accumulated in the first time period up to the current moment is greater than the remaining heat measurement value.

[0090] S206. If it is determined that the cumulative heat measurement value is greater than the remaining heat measurement value, stop the wireless charging operation of the implanted device, determine the second heat measurement value of the implanted device during the heat dissipation process, and update the cumulative heat measurement value of the first time period according to the second heat measurement value.

[0091] The second heat value can refer to the heat dissipation value during the heat dissipation process after wireless charging is stopped, when the device surface temperature is within a preset temperature range. For example, the value of the second heat value can be determined based on historical experience; this invention does not specifically limit the calculation process and result.

[0092] Specifically, when the cumulative calorific value exceeds the remaining calorific value, it indicates that the calorific value received by the biological tissue has exceeded the tissue's cumulative heat threshold. At this point, the charging management strategy based on the calorific value threshold will be terminated, and a traditional charging management strategy based on the instantaneous temperature threshold will be adopted. In this case, the wireless charging operation of the implanted device will be stopped, and a second calorific value will be determined during the heat dissipation process of the implanted device. The second calorific value will be summed with the total calorific value accumulated within the first time period, and the summed result will be updated as the cumulative calorific value of the implanted device in the first time period.

[0093] For example, if it is determined that the cumulative heat measurement value is not greater than the remaining heat measurement value, the device surface temperature is periodically reacquired, and the steps are repeatedly executed to determine the cumulative heat measurement value of the implanted device in the first time period based on the detected device surface temperature and the preset temperature range, and to perform thermal management on the wireless charging operation of the implanted device.

[0094] S207. When the surface temperature of the device drops to no more than the first temperature threshold, update the heat measurement value sequence according to the updated cumulative heat measurement value, and return to the step of determining the remaining heat measurement value in the first time period according to the heat measurement value sequence.

[0095] Specifically, after the implanted device cools down and dissipates heat, when the surface temperature of the device drops to no more than the first temperature threshold, the heat measurement value sequence is re-determined based on the cumulative heat measurement value of the implanted device at the current moment in the first time period, and the process returns to the step of determining the remaining heat measurement value in the first time period based on the heat measurement value sequence, so as to realize the intelligent switching between the charging management strategy of heat measurement value threshold and the traditional instantaneous temperature threshold charging management strategy.

[0096] The technical solution of this invention calculates a first thermal measurement value for the implanted device when the device surface temperature falls within the preset temperature range, thereby updating the cumulative thermal measurement value. If the cumulative thermal measurement value is determined to be greater than the remaining thermal measurement value, the wireless charging operation of the implanted device is stopped. By ensuring that the cumulative thermal measurement value does not exceed safety limits, the thermal tolerance of the tissue is fully utilized, allowing the implanted device to continue charging, thus significantly improving charging efficiency and effectively shortening the total charging time.

[0097] Figure 3This is a flowchart of a thermal management method for charging an implantable device according to an embodiment of the present invention. Based on the above embodiments, this embodiment refines the determination of the cumulative thermal measurement value and the thermal management of the wireless charging operation of the implantable device when a charging management strategy based on a thermal measurement value threshold is executed and the device surface temperature is greater than a second temperature threshold. For example... Figure 3 As shown, the method includes:

[0098] S301. When it is determined that the charging preparation work of the implanted device is completed, the heat measurement value sequence of the implanted device is obtained, and the remaining heat measurement value in the first time period is determined according to the heat measurement value sequence.

[0099] S302. When the remaining heat metering value is greater than the minimum preset threshold, start the charging and energy replenishment of the implanted device, and periodically detect the surface temperature of the implanted device.

[0100] S303. When the surface temperature of the device is greater than the second temperature threshold, stop the wireless charging operation of the implanted device, determine that the cumulative heat measurement value of the implanted device is zero, and there is no need to update the cumulative heat measurement value of the first time period.

[0101] Specifically, when implementing a charging management strategy based on a heat metering threshold, if the device surface temperature exceeds a second temperature threshold, wireless charging of the implanted device should be stopped according to national industry standards and with stricter temperature criteria. This is to reduce charging power, control temperature rise, and prevent irreversible thermal damage to biological tissues.

[0102] When the device surface temperature exceeds the second temperature threshold, the implanted device stops wireless charging. Therefore, it is determined that when the device surface temperature exceeds the second temperature threshold, the cumulative heat measurement value of the implanted device is zero, and the cumulative heat measurement value of the first time period remains unchanged and does not need to be updated.

[0103] S304. When the surface temperature of the device is greater than the second temperature threshold, stop the wireless charging operation of the implanted device, determine the third heat measurement value of the implanted device during the heat dissipation process, and update the total heat measurement value accumulated in the first time period according to the third heat measurement value to obtain the updated cumulative heat measurement value.

[0104] The third heat value can refer to the heat dissipation value during the heat dissipation process after wireless charging stops when the device surface temperature exceeds the second temperature threshold. For example, the value of the third heat value can also be determined based on historical experience; this invention does not specifically limit the calculation process and result.

[0105] Specifically, after the implanted device stops wireless charging, a third heat measurement value is determined during the cooling and heat dissipation process of the implanted device due to the residual heat. This third heat measurement value is then summed with the total heat measurement value accumulated within the first time period, and the summation result is updated as the cumulative heat measurement value of the implanted device in the first time period.

[0106] S305. When the surface temperature of the device drops to no more than the first temperature threshold, update the heat measurement value sequence according to the updated cumulative heat measurement value, and return to the step of determining the remaining heat measurement value in the first time period according to the heat measurement value sequence.

[0107] Specifically, after the implanted device cools down and dissipates heat, when the surface temperature of the device drops to no more than the first temperature threshold, the heat measurement value sequence is re-determined based on the cumulative heat measurement value of the implanted device at the current moment in the first time period, and the process returns to the step of determining the remaining heat measurement value in the first time period based on the heat measurement value sequence, so as to realize the intelligent switching between the charging management strategy of heat measurement value threshold and the traditional instantaneous temperature threshold charging management strategy.

[0108] The technical solution of this invention stops wireless charging of the implanted device when the device surface temperature exceeds the second temperature threshold, preventing potential thermal damage risks and allowing subsequent charging to continue under the most conservative safety guidelines. By determining the third thermal measurement value of the implanted device during heat dissipation, the accuracy of subsequent charging management strategies based on thermal measurement value thresholds is improved compared to traditional instantaneous temperature threshold charging management strategies, thereby further enhancing the user experience.

[0109] Figure 4 This is a flowchart of a thermal management method for charging an implantable device according to an embodiment of the present invention. Based on the above embodiments, this embodiment refines the determination of the cumulative thermal measurement value and the thermal management of the wireless charging operation of the implantable device when a charging management strategy based on a thermal measurement value threshold is executed and the device surface temperature is less than a first temperature threshold. For example... Figure 4 As shown, the method includes:

[0110] S401. When it is determined that the charging preparation work of the implanted device is completed, the heat measurement value sequence of the implanted device is obtained, and the remaining heat measurement value in the first time period is determined according to the heat measurement value sequence.

[0111] S402. When the remaining heat metering value is greater than the minimum preset threshold, start the charging and energy replenishment of the implanted device, and periodically detect the surface temperature of the implanted device.

[0112] S403. If the surface temperature of the device is less than the first temperature threshold, determine that the cumulative heat measurement value of the implanted device is zero, and there is no need to update the cumulative heat measurement value of the first time period.

[0113] Specifically, when implementing a charging management strategy based on a heat measurement threshold, if the device surface temperature is lower than a first temperature threshold, according to national industry standards, the heat measurement value of the implanted device is exempted from consideration below the first temperature threshold. Therefore, the cumulative heat measurement value of the implanted device in the state where the device surface temperature is lower than the first temperature threshold can be considered zero. The cumulative heat measurement value for the first time period remains unchanged and does not require updating.

[0114] S404. When the surface temperature of the device is less than the first temperature threshold, there is no need to perform thermal management on the wireless charging operation of the implanted device.

[0115] Specifically, if the device surface temperature is lower than the first temperature threshold, it indicates that the wireless charging status of the implanted device is good, and no thermal management is required for the wireless charging operation of the implanted device. The device surface temperature of the implanted device can continue to be monitored periodically, and the steps can be repeated cyclically to determine the cumulative heat measurement value of the implanted device in the first time period based on the device surface temperature and the preset temperature range.

[0116] The technical solution of this invention eliminates the need to consider the thermal measurement value of the implanted device when the surface temperature of the device is less than the second temperature threshold. It can be determined that the device will not cause thermal damage to biological tissue under normal use conditions. There is no need to perform thermal management on the wireless charging operation of the implanted device, thereby maximizing charging efficiency, reducing the number of charging interruptions, and shortening the total charging time, thus significantly improving the user experience.

[0117] Figure 5 This is a schematic diagram of a charging thermal management method for an implantable device provided by an embodiment of the present invention. This embodiment is a preferred implementation based on the above embodiments. Figure 5 As shown, the method includes:

[0118] The first step involves the built-in controller of the implanted device initiating a new loop. Based on a time period division (e.g., midnight each day), it updates a heat metering value sequence of length 3. The three values ​​in the heat metering value sequence (1st_CEM43 / 2nd_CEM43 / 3rd_CEM43) represent the heat accumulation values ​​from charging on the current day, yesterday, and the day before yesterday, respectively. During the update, the heat accumulation value for the current day is reset to zero, thus ensuring that the heat accumulation value can be periodically reset and that the charging management strategy based on the heat metering value threshold does not become invalid.

[0119] The second step involves determining the remaining heat measurement value CEM43_TH available for the first time period (e.g., the day) after confirming that the charging preparation of the implanted device is complete: CEM43_TH = CEM43_ALL - 3rd_CEM43 - 2nd_CEM43 - 1st_CEM43, where the tissue heat accumulation threshold CEM43_ALL is 21. Since the stimulator is implanted in subcutaneous fat or in the interlayer between fat and muscle, the tissue heat accumulation threshold of 21 in Table 1 is selected as the more stringent standard for skin.

[0120] The third step involves selecting a charging management strategy based on the remaining heat metering value CEM43_TH if it is greater than the minimum preset threshold (e.g., 0). Otherwise, a traditional charging management strategy based on the instantaneous temperature threshold (e.g., 39 degrees Celsius) is selected. This is the core feature of the automatically selected charging scheme.

[0121] Regardless of the chosen approach, the built-in controller will initiate the charging and recharging process of the implanted device and periodically collect the device surface temperature T.

[0122] If the instantaneous temperature threshold charging management strategy is selected, if the device surface temperature T is greater than the first temperature threshold (e.g., 39 degrees Celsius), charging will be stopped immediately (the stimulator itself shuts down the charging circuit and notifies the charger via wireless communication). Then, the temperature will continue to be collected periodically, and the next charging will be allowed to start again after the temperature drops below the first temperature threshold (e.g., 39 degrees Celsius) (the stimulator itself opens the charging circuit and notifies the charger via wireless communication).

[0123] If the charging management strategy with a heat metering threshold is selected, the instantaneous temperature threshold will be increased from the first temperature threshold (e.g., 39 degrees Celsius) to the second temperature threshold (e.g., 43 degrees Celsius), and a preset temperature range will be constructed. The two temperature endpoints of the preset temperature range are the first temperature threshold (e.g., 39 degrees Celsius) and the second temperature threshold (e.g., 43 degrees Celsius).

[0124] When the equipment surface temperature T is between a first temperature threshold (e.g., 39 degrees Celsius) and a second temperature threshold (e.g., 43 degrees Celsius), the periodically collected equipment surface temperature T is integrated with time to obtain the first heat measurement value, which is continuously increased to the cumulative heat measurement value CEM43+. The calculation formula and scope of this first heat measurement value are directly adopted from the formula in the industry standard.

[0125] When the cumulative heat metering value CEM43+ exceeds the remaining heat metering value CEM43_TH, or when the device surface temperature T exceeds the second temperature threshold (e.g., 43 degrees Celsius), charging will be stopped immediately, and the implanted device will be allowed to cool down to below the first temperature threshold (e.g., 39 degrees Celsius).

[0126] In particular, since the industry standard does not clearly specify the method for calculating the cumulative heat value during the cooling period, the technical solution of this invention uses two empirical values, the second heat measurement value and the third heat measurement value (CEM43_COOL_1 and CEM43_COOL_2), as substitutes to estimate the cooling process in two cases: exceeding the second temperature threshold of the instantaneous temperature (e.g., 43 degrees Celsius) and the cumulative heat measurement value CEM43+ exceeding the remaining heat measurement value CEM43_TH.

[0127] Finally, the cumulative heat measurement value CEM43+, after adding the empirical values ​​from the cooling process, is saved and recorded in the heat measurement value 1st_CEM43 of the first time period, and then the next charging cycle is allowed to begin again. When charging begins again, the charging scheme can automatically select and switch between two scheme strategies without user intervention.

[0128] Figure 6 This is a schematic diagram of the structure of an implantable device charging thermal management device provided in an embodiment of the present invention. Figure 6 As shown, the device includes:

[0129] The heat measurement value determination module 601 is used to acquire the heat measurement value sequence of the implanted device when it is determined that the charging preparation work of the implanted device is completed, and to determine the remaining heat measurement value in the first time period according to the heat measurement value sequence, wherein the heat measurement value sequence includes heat measurement values ​​of multiple consecutive historical time periods starting from the first time period.

[0130] The device charging management module 602 is used to start the charging and energy replenishment of the implanted device when the remaining heat metering value is greater than a minimum preset threshold. Based on the detected surface temperature of the implanted device and a preset temperature range, the module determines the cumulative heat metering value of the implanted device in the first time period, and performs thermal management on the wireless charging operation of the implanted device based on the cumulative heat metering value and the remaining heat metering value. The two temperature endpoints of the preset temperature range are a first temperature threshold and a second temperature threshold, respectively, and the second temperature threshold is greater than the first temperature threshold.

[0131] Optionally, the first temperature threshold is the critical temperature at which the biological tissue implanted by the implantation device maintains its heat transfer capacity; the second temperature threshold is the critical temperature at which the biological tissue implanted by the implantation device undergoes degeneration and damage.

[0132] Optionally, the heat measurement values ​​in the heat measurement value sequence are updated based on the time period division; the device further includes a heat measurement value sequence update module.

[0133] The heat metering value sequence update module is specifically used for;

[0134] At the time period switching moment, the heat measurement value of the first time period in the heat measurement value sequence is updated to zero;

[0135] Determine the continuous historical time periods starting from the first time period, and the heat measurement values ​​corresponding to each historical time period;

[0136] Based on the heat measurement values ​​corresponding to the first time period and the continuous historical time periods starting from the first time period, an updated heat measurement value sequence is determined.

[0137] Optionally, the heat metering value determination module 601 is specifically used for:

[0138] Identify the biological tissue into which the implantation device is implanted, and determine a threshold for the cumulative tissue heat that the biological tissue must not exceed in terms of the heat metering value.

[0139] Based on the heat measurement values ​​of each time period in the heat measurement value sequence, the total heat measurement value received by the implanted device for the biological tissue is determined.

[0140] The remaining heat measurement value in the first time period is determined based on the total received heat measurement value and the tissue heat accumulation threshold.

[0141] Optionally, the device charging management module 602 is specifically used for:

[0142] If the surface temperature of the device is within the preset temperature range, the first thermal value of the implanted device is calculated based on the surface temperature of the device using a thermal measurement algorithm.

[0143] The total accumulated heat measurement value within the first time period is updated based on the first heat measurement value to obtain the updated accumulated heat measurement value.

[0144] Accordingly, the step of performing thermal management on the wireless charging operation of the implanted device based on the cumulative thermal measurement value and the remaining thermal measurement value includes:

[0145] If the surface temperature of the device is within the preset temperature range, determine whether the cumulative heat measurement value is greater than the remaining heat measurement value.

[0146] If it is determined that the cumulative heat measurement value is greater than the remaining heat measurement value, the wireless charging operation of the implanted device is stopped, a second heat measurement value of the implanted device during the heat dissipation process is determined, and the cumulative heat measurement value of the first time period is updated according to the second heat measurement value.

[0147] When the surface temperature of the device drops to no more than the first temperature threshold, the heat measurement value sequence is updated according to the updated cumulative heat measurement value, and the process returns to the step of determining the remaining heat measurement value in the first time period according to the heat measurement value sequence.

[0148] Optionally, the device charging management module 602 is also specifically used for:

[0149] If the surface temperature of the device is greater than the second temperature threshold, the wireless charging operation of the implanted device is stopped, and the cumulative thermal measurement value of the implanted device is determined to be zero, without needing to update the cumulative thermal measurement value of the first time period.

[0150] Accordingly, thermal management is performed on the wireless charging operation of the implanted device based on the cumulative thermal measurement value and the remaining thermal measurement value, including:

[0151] If the surface temperature of the device is greater than the second temperature threshold, the wireless charging operation of the implanted device is stopped, and the third heat measurement value of the implanted device during the heat dissipation process is determined. The total heat measurement value accumulated in the first time period is updated according to the third heat measurement value to obtain the updated cumulative heat measurement value.

[0152] When the surface temperature of the device drops to no more than the first temperature threshold, the heat measurement value sequence is updated according to the updated cumulative heat measurement value, and the process returns to the step of determining the remaining heat measurement value in the first time period according to the heat measurement value sequence.

[0153] Optionally, the device charging management module 602 is also specifically used for:

[0154] If the surface temperature of the device is less than the first temperature threshold, the cumulative thermal measurement value of the implanted device is determined to be zero, and there is no need to update the cumulative thermal measurement value of the first time period.

[0155] Accordingly, the step of performing thermal management on the wireless charging operation of the implanted device based on the cumulative thermal measurement value and the remaining thermal measurement value includes:

[0156] When the surface temperature of the device is less than the first temperature threshold, there is no need for thermal management of the wireless charging operation of the implanted device.

[0157] Optionally, the device charging management module 602 is also specifically used for:

[0158] If the remaining heat metering value is not greater than the minimum preset threshold, the charging and energy replenishment of the implanted device is started, and the surface temperature of the implanted device is detected.

[0159] The surface temperature of the device is compared with the first temperature threshold.

[0160] If the surface temperature of the device exceeds the first temperature threshold, the wireless charging operation of the implanted device is stopped. If the surface temperature of the device drops to a temperature not exceeding the first temperature threshold, the wireless charging operation of the implanted device is resumed, and the temperature monitoring and management of the implanted device is performed cyclically.

[0161] The technical solution of this invention involves acquiring a thermal measurement value sequence of the implanted device after confirming that the charging preparation work of the implanted device is complete, and determining the remaining thermal measurement value in a first time period based on the thermal measurement value sequence. If the remaining thermal measurement value is greater than a minimum preset threshold, the charging replenishment operation of the implanted device is initiated. Based on the detected surface temperature of the implanted device and a preset temperature range, the cumulative thermal measurement value of the implanted device in the first time period is determined. Thermal management of the wireless charging operation of the implanted device is then performed based on the cumulative thermal measurement value and the remaining thermal measurement value. By intelligently switching between a charging management strategy based on thermal measurement value thresholds and a traditional charging management strategy based on instantaneous temperature thresholds, the problem of unnecessary charging interruption cycles caused by using only traditional instantaneous temperature threshold control is solved. This also prevents the potential risk of thermal damage due to thermal measurement, thereby maximizing safety and charging efficiency, reducing the number of charging interruptions, shortening the total charging time, and significantly improving the user's wireless charging experience.

[0162] The implantable device charging thermal management device provided in the embodiments of the present invention can execute the implantable device charging thermal management method provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of executing the method.

[0163] This invention also provides an implantable device. This implantable device can be implanted into a patient's body. The implantable device includes a rechargeable battery and a controller, and charges the rechargeable battery via coupling to an external charger. The controller is configured to perform charging control by executing an implantable device charging thermal management method.

[0164] This invention also provides an implantable medical system. The implantable medical system includes an implantable device that can be implanted into a patient's body and a charger that provides power to the implantable device.

[0165] The implantable device is an implantable neurostimulator.

[0166] Figure 7 A schematic diagram of an electronic device 10 that can be used to implement embodiments of the present invention is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, wearable devices (such as helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the invention described and / or claimed herein.

[0167] like Figure 7 As shown, the electronic device 10 includes at least one processor 11 and a memory, such as a read-only memory (ROM) 12 or a random access memory (RAM) 13, communicatively connected to the at least one processor 11. The memory stores computer programs executable by the at least one processor. The processor 11 can perform various appropriate actions and processes based on the computer program stored in the ROM 12 or loaded from storage unit 18 into the RAM 13. The RAM 13 can also store various programs and data required for the operation of the electronic device 10. The processor 11, ROM 12, and RAM 13 are interconnected via a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0168] Multiple components in electronic device 10 are connected to I / O interface 15, including: input unit 16, such as keyboard, mouse, etc.; output unit 17, such as various types of displays, speakers, etc.; storage unit 18, such as disk, optical disk, etc.; and communication unit 19, such as network card, modem, wireless transceiver, etc. Communication unit 19 allows electronic device 10 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0169] Processor 11 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. Processor 11 performs the various methods and processes described above, such as the implanted device charging thermal management method.

[0170] In some embodiments, the implantable device charging thermal management method may be implemented as a computer program tangibly contained in a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program may be loaded and / or installed on electronic device 10 via ROM 12 and / or communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the implantable device charging thermal management method described above may be performed. Alternatively, in other embodiments, processor 11 may be configured to perform the implantable device charging thermal management method by any other suitable means (e.g., by means of firmware).

[0171] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0172] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. An implantable device charging thermal management method, characterized by, The method comprises the steps of: In the case where the charging preparation of the implanted device is determined to be completed, a thermal budget value sequence of the implanted device is obtained, and a residual thermal budget value in a first time period is determined according to the thermal budget value sequence, wherein the thermal budget value sequence comprises thermal budget values of consecutive historical time periods starting from the first time period; In the case where the residual thermal budget value is greater than a minimum preset threshold value, charging compensation work of the implanted device is started, an accumulated thermal budget value of the implanted device in the first time period is determined according to a detected device surface temperature of the implanted device and a preset temperature interval, and thermal management is performed on the wireless charging work of the implanted device according to the accumulated thermal budget value and the residual thermal budget value, wherein two temperature endpoints of the preset temperature interval are a first temperature threshold value and a second temperature threshold value respectively, and the second temperature threshold value is greater than the first temperature threshold value.

2. The method of claim 1, wherein, The first temperature threshold value is a critical temperature at which a biological tissue in which the implanted device is implanted maintains heat transfer capability, and the second temperature threshold value is a critical temperature at which the biological tissue in which the implanted device is implanted is denatured and damaged.

3. The method of claim 1, wherein, The thermal budget values in the thermal budget value sequence are updated based on division time points of time periods, and the updating process of the thermal budget value sequence comprises the steps of: At the time period switching time point, the thermal budget value of the first time period in the thermal budget value sequence is updated to zero; Consecutive historical time periods starting from the first time period and thermal budget values corresponding to the historical time periods are determined; According to the first time period and the thermal budget values corresponding to the consecutive historical time periods starting from the first time period, an updated thermal budget value sequence is determined.

4. The method of claim 1, wherein, The determination of the residual thermal budget value in the first time period according to the thermal budget value sequence comprises the steps of: A biological tissue in which the implanted device is implanted is determined, and a tissue thermal cumulative amount threshold value that the biological tissue cannot exceed is determined; According to the thermal budget values of each time period in the thermal budget value sequence, a total value of an accepted thermal budget of the biological tissue that has accepted the thermal budget of the implanted device is determined; According to the total value of the accepted thermal budget and the tissue thermal cumulative amount threshold value, the residual thermal budget value in the first time period is determined.

5. The method of claim 1, wherein, The determination of the accumulated thermal budget value of the implanted device in the first time period according to the detected device surface temperature of the implanted device and the preset temperature interval comprises the steps of: In the case where the device surface temperature belongs to the preset temperature interval, a first thermal budget value of the implanted device is calculated based on a thermal budget value algorithm according to the device surface temperature; The total value of the accumulated thermal budget in the first time period is updated according to the first thermal budget value, and an updated accumulated thermal budget value is obtained; Correspondingly, the thermal management performed on the wireless charging work of the implanted device according to the accumulated thermal budget value and the residual thermal budget value comprises the steps of: In the case where the device surface temperature belongs to the preset temperature interval, it is determined whether the accumulated thermal budget value is greater than the residual thermal budget value; determining a second thermal metric value of the implanted device in a heat dissipation process, and updating the accumulated thermal metric value of the first time period according to the second thermal metric value; in the case that the device surface temperature is reduced to not more than the first temperature threshold, updating the thermal metric value sequence according to the updated accumulated thermal metric value, and returning to the step of determining the residual thermal metric value of the first time period according to the thermal metric value sequence.

6. The method of claim 1, wherein, The accumulated thermal metric value of the implanted device in the first time period is determined according to the detected device surface temperature of the implanted device and the preset temperature interval. In the case that the device surface temperature is greater than the second temperature threshold, stopping the wireless charging work of the implanted device, determining the accumulated thermal metric value of the implanted device as zero, and not updating the accumulated thermal metric value of the first time period; Correspondingly, the thermal management of the wireless charging work of the implanted device according to the accumulated thermal metric value and the residual thermal metric value comprises: In the case that the device surface temperature is greater than the second temperature threshold, stopping the wireless charging work of the implanted device, and determining a third thermal metric value of the implanted device in a heat dissipation process, and updating the total accumulated thermal metric value in the first time period according to the third thermal metric value to obtain an updated accumulated thermal metric value; in the case that the device surface temperature is reduced to not more than the first temperature threshold, updating the thermal metric value sequence according to the updated accumulated thermal metric value, and returning to the step of determining the residual thermal metric value of the first time period according to the thermal metric value sequence.

7. The method of claim 1, wherein, The accumulated thermal metric value of the implanted device in the first time period is determined according to the detected device surface temperature of the implanted device and the preset temperature interval. In the case that the device surface temperature is less than the first temperature threshold, the accumulated thermal metric value of the implanted device is determined as zero, and the accumulated thermal metric value of the first time period is not updated; Correspondingly, the thermal management of the wireless charging work of the implanted device according to the accumulated thermal metric value and the residual thermal metric value comprises: In the case that the device surface temperature is less than the first temperature threshold, the wireless charging work of the implanted device is not thermally managed.

8. The method of claim 1, wherein, The method further comprises: in the case that the residual thermal metric value is not greater than the lowest preset threshold, starting the charging compensation work of the implanted device, detecting the device surface temperature of the implanted device; comparing the device surface temperature with the first temperature threshold; in the case that the device surface temperature is greater than the first temperature threshold, stopping the wireless charging work of the implanted device, and in the case that the device surface temperature is reduced to not more than the first temperature threshold, resuming the wireless charging work of the implanted device, and cyclically executing the temperature monitoring management of the implanted device.

9. An implantable device charging thermal management apparatus, comprising: comprises: The thermal value determination module is configured to, in a case where it is determined that the charging preparation of the implanted device is completed, acquire a thermal value sequence of the implanted device, and determine a residual thermal value of a first time period according to the thermal value sequence, wherein the thermal value sequence comprises thermal values of a plurality of historical time periods successively starting from the first time period. The device charging management module is configured to, in a case where the residual thermal value is greater than a minimum preset threshold, start a charging compensation work of the implanted device, determine an accumulated thermal value of the implanted device in the first time period according to a detected device surface temperature of the implanted device and a preset temperature interval, and perform thermal management on the wireless charging work of the implanted device according to the accumulated thermal value and the residual thermal value, wherein two temperature endpoints of the preset temperature interval are a first temperature threshold and a second temperature threshold respectively, and the second temperature threshold is greater than the first temperature threshold.

10. An implant device, characterized by The implanted device is implanted into a patient, and comprises a rechargeable battery and a controller, and the rechargeable battery is charged by coupling with an external charger, and the controller performs charging control by the method of any one of claims 1 to 8.

11. An implantable medical system, comprising: The system comprises the implanted device of claim 10 and the charger. The implanted device is an implanted neurostimulator.

12. An electronic device, comprising: The electronic device comprises: at least one processor; and a memory connected to the at least one processor in communication; wherein the memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor to enable the at least one processor to perform the implanted device charging thermal management method of any one of claims 1 to 8.

13. A computer-readable storage medium, characterized in that, The computer readable storage medium stores computer instructions for enabling the processor to perform the implanted device charging thermal management method of any one of claims 1 to 8 when executed. The computer readable storage medium stores computer instructions for enabling the processor to perform the implanted device charging thermal management method of any one of claims 1 to 8 when executed.

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