Implantable neurostimulation device and methods of control and localization thereof
By calculating the coupling energy value between the energy transmitter and receiver of the implantable neurostimulation device, and adjusting the transmission power and distance, the structural complexity and inconvenience caused by the magnetic interface are solved, achieving stable and efficient wireless energy transmission and neurostimulation effects.
Patent Information
- Application Number
- CN202610690960.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-05-19
- Publication Date
- 2026-08-18
AI Technical Summary
In existing implantable neurostimulation devices, the use of magnetic interfaces increases the complexity and cost of the device structure. Furthermore, patients need to precisely fix the position of the external unit, which makes it difficult to maintain stability during daily activities, leading to decreased energy transmission efficiency and safety risks.
By calculating the preset and actual coupling energy values between the stimulus energy transmitter and receiver, the transmission power and distance are adjusted to achieve adaptive regulation of wireless energy, simplifying the positioning process and improving transmission efficiency.
Stable wireless energy transmission was achieved without increasing the size and complexity of the device, which lowered the operating threshold, improved patient compliance and safety, and ensured the high efficiency and reliability of neurostimulation therapy.
Smart Images
Figure CN122600495A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of medical device technology, and in particular to an implantable neurostimulation device and its control and positioning methods. Background Technology
[0002] Implantable neurostimulation devices, as a core component of advanced medical technology, show broad application prospects in the diagnosis, monitoring, and treatment of diseases. These devices bring hope to many patients with neurological disorders by precisely modulating neural activity. Their operation typically involves the coordinated action of the implanted component and the external control unit, with wireless transmission of energy and signals being crucial for their high-efficiency operation.
[0003] In existing technologies, ensuring that implanted devices receive stable and sufficient energy typically relies on precise positioning mechanisms. Specifically, to achieve better wireless energy transfer, current passive implantable neurostimulators generally employ magnetic interfaces for positioning. This mechanism aims to fix the application position of the external part and limit its distance from the implanted device, thereby optimizing the stability of energy transmission.
[0004] However, a deeper analysis of this approach reveals its inherent drawbacks. First, the introduction of the magnetic interface directly increases the structural complexity of the implanted component. To accommodate this interface, the implant's volume may need to increase, raising manufacturing costs and potentially impacting the physiological compatibility of the implantation site. Second, the magnetic positioning method demands a high level of skill from the patient. The patient needs to precisely fix the external unit in a specific position and maintain relative stillness, which is difficult to achieve consistently during daily activities, significantly limiting the device's flexibility and ease of use. Any deviation in relative orientation or distance will significantly reduce energy transmission efficiency, leading to insufficient power supply to the implant, thus affecting the stimulation effect and potentially introducing safety risks due to unstable power supply. Summary of the Invention
[0005] Based on this, this application provides an implantable neurostimulation device and its control and positioning methods, which can easily and cost-effectively locate the orientation and distance inside and outside the body, thereby adjusting the stimulation parameters of wireless energy in real time to achieve the best energy transmission efficiency and thus obtain better wireless energy transmission effect.
[0006] To achieve the above objectives, in a first aspect, some embodiments of this application provide a method for locating an implantable neurostimulation device, the method comprising:
[0007] Based on the first preset distance between the stimulating energy transmitter and the stimulating energy receiver, and the preset receiving power required by the stimulating energy receiver, calculate and transmit the preset transmission power to the stimulating energy receiver;
[0008] Calculate the preset coupling energy value generated by the stimulus energy receiver after acquiring the preset transmission power, and obtain the actual coupling energy value actually generated by the stimulus energy receiver;
[0009] Calculate the test distance between the stimulus energy transmitter and the stimulus energy receiver based on the preset coupling energy value and the actual coupling energy value.
[0010] Compare the actual deviation of the test distance from the first preset distance with the preset deviation value;
[0011] The comparison results show the true distance between the stimulus energy emitter and the stimulus energy receiver.
[0012] In some embodiments of this application, determining the true distance between the stimulus energy emitter and the stimulus energy receiver based on comparison results includes:
[0013] When the actual deviation value is greater than the preset deviation value, the first preset distance is fitted with the test distance, and the second preset distance is calculated.
[0014] Based on the second preset distance and the preset receiving power required by the stimulation energy receiver, calculate and transmit the preset transmission power to the stimulation energy receiver;
[0015] Calculate the test distance between the stimulus energy emitter and the stimulus energy receiver;
[0016] Calculate the actual deviation between the second preset distance and the test distance.
[0017] In some embodiments of this application, fitting the first preset distance to the test distance and calculating the second preset distance includes:
[0018] The second preset distance is calculated according to the first rule; the first rule is:
[0019] d2 =K w .d1+(1-K w ).d2+C E
[0020] In the formula, d2 is the second preset distance, d1 is the first preset distance, and K w K represents the weighting coefficient. w The range is 0-1, d2 is the test distance, and C E This is a correction factor.
[0021] In some embodiments of this application, calculating and transmitting a preset transmission power to the stimulation energy receiver includes: calculating the preset transmission power according to a second rule; the second rule is:
[0022]
[0023] In the formula, η, a, b, and c are constant coefficients. d1 is a constant, P1 is the first preset distance, P1 is the preset receiving power, and f(p2) is the preset transmitting power.
[0024] In some embodiments of this application, calculating the test distance between the stimulus energy emitter and the stimulus energy receiver includes: calculating the test distance according to a third rule; the third rule is:
[0025]
[0026] In the formula, d2 is the test distance, CA is the scaling constant, CB is the noise floor constant, CC is the attenuation exponent (CC ranges from 0.5 to 1), and CD is the distance offset constant (CD ranges from greater than 0). Preset coupling energy value, This represents the actual coupling energy value.
[0027] In some embodiments of this application, the actual coupling energy value , where n is the number of wireless sensors.
[0028] Secondly, some embodiments of this application also provide a control method for an implantable neurostimulation device, the control method being applicable to the positioning method of the implantable neurostimulation device as described in any of the foregoing embodiments, including:
[0029] Calculate the precise distance between the stimulus energy emitter and the stimulus energy receiver;
[0030] Adjust the number of working coils in the stimulus energy emitter according to the precise distance.
[0031] Thirdly, some embodiments of this application also provide an implantable neurostimulation device, which includes an energy transmitter, an energy receiver, a control module, and a wireless sensor. The energy transmitter emits electromagnetic energy. The energy receiver receives the electromagnetic energy emitted by the energy transmitter and couples it into stimulation energy. The control module is communicatively connected to both the energy transmitter and the energy receiver. The wireless sensor calculates the test distance between the stimulation energy transmitter and the stimulation energy receiver based on a preset coupling energy value and the actual coupling energy value, and compares the actual deviation of the test distance from a first preset distance with a preset deviation value. Based on the comparison result, the true distance between the stimulation energy transmitter and the stimulation energy receiver is determined. The wireless sensor is communicatively connected to the energy transmitter, the energy receiver, and the control module. The wireless sensor monitors the energy generated by the energy transmitter and the energy receiver and sends the energy value to the control module.
[0032] In some embodiments of this application, the stimulation device further includes a display module. The display module is communicatively connected to the control module, and is used to display the operating values of the energy transmitter and the energy receiver, and to send control commands to the control module.
[0033] In some embodiments of this application, the wireless sensor includes a body and at least one sensing module. The sensing module is disposed on the outer surface of the body and is symmetrical about the center of the body.
[0034] The implantable neurostimulation device and its control and positioning methods provided in this application have, or at least have, the following advantages:
[0035] In this embodiment, the provided method for locating an implantable neurostimulation device calculates and transmits a preset transmission power based on a first preset distance and a preset receiving power between the stimulation energy transmitter and the stimulation energy receiver. It then compares the calculated preset coupling energy value with the actual acquired coupling energy value to infer the test distance. Finally, it compares the actual deviation between the test distance and the first preset distance with a preset deviation value to accurately determine the true distance between the two. This positioning method, without increasing the size and complexity of the device inside the body, can locate and acquire the orientation and distance of the internal part relative to the external part. In other words, this application can simply and cost-effectively locate the orientation and distance inside and outside the body, and adjust the stimulation parameters of the wireless energy (including the output frequency, output amplitude, output timing, etc.) based on this location information to achieve optimal energy transmission efficiency and thus obtain better wireless energy transmission effects.
[0036] Furthermore, in practical applications, the system does not require patients to strictly maintain a fixed relative position or a static state between the external generator and the internal receiver. It can adapt to changes in position during daily activities, which greatly reduces the operational threshold and improves patients' long-term compliance. It provides a precise spatial reference for the stable operation of the wireless energy transmission system, effectively overcoming the risks of reduced energy transmission efficiency, insufficient power supply, or electromagnetic safety caused by human error interference in traditional positioning. Thus, while ensuring the safety of the device, it achieves efficient and reliable wireless energy transmission and better neurostimulation therapy effects.
[0037] Details of one or more embodiments of this application are set forth in the following drawings and description. Other features, objects, and advantages of this application will become apparent from the specification, drawings, and claims. Attached Figure Description
[0038] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0039] Figure 1 A flowchart illustrating a method for locating a nerve stimulation device according to some embodiments of this application;
[0040] Figure 2 A flowchart illustrating step S500 in a method for locating a neurostimulation device provided in some embodiments of this application;
[0041] Figure 3 A schematic flowchart illustrating a control method for a nerve stimulation device provided in some embodiments of this application;
[0042] Figure 4 This application provides a schematic diagram of the structure of a nerve stimulation device according to some embodiments;
[0043] Figure 5(a) is a schematic diagram of a nerve stimulation device with one sensor module symmetrically installed at 0 degrees in some embodiments of this application; Figure 5(b) is a schematic diagram of a nerve stimulation device with two sensor modules symmetrically installed at approximately 180 degrees in some embodiments of this application; Figure 5(c) is a schematic diagram of a nerve stimulation device with three sensor modules symmetrically installed at 120 degrees in a triangular shape in some embodiments of this application; Figure 5(d) is a schematic diagram of a nerve stimulation device with four sensor modules symmetrically installed at 90 degrees in a right-angle shape in some embodiments of this application.
[0044] Explanation of reference numerals in the attached figures:
[0045] 1-Energy transmitter; 2-Energy receiver; 3-Control module; 4-Wireless sensor; 41-Sensing module. Detailed Implementation
[0046] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.
[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application.
[0048] It is understood that the terms "first," "second," etc., used in this application may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another. For example, without departing from the scope of this application, a first input terminal may be referred to as a second input terminal, and similarly, a second input terminal may be referred to as a first input terminal. Both the first input terminal and the second input terminal are input terminals, but they are not the same input terminal.
[0049] It is understood that the term "connection" in the following embodiments should be understood as "electrical connection," "communication connection," etc., if the connected circuits, modules, units, etc., have electrical signal or data transmission with each other.
[0050] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising / including” or “having,” etc., specify the presence of the stated features, wholes, steps, operations, components, parts, or combinations thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof. Meanwhile, the term “and / or” as used in this specification includes any and all combinations of the associated listed items.
[0051] Implantable neurostimulation devices, as a core component of advanced medical technology, show broad application prospects in the diagnosis, monitoring, and treatment of diseases. These devices bring hope to many patients with neurological disorders by precisely modulating neural activity. Their operation typically involves the coordinated action of the implanted component and the external control unit, with wireless transmission of energy and signals being crucial for their high-efficiency operation.
[0052] In existing technologies, ensuring that implanted devices receive stable and sufficient energy typically relies on precise positioning mechanisms. Specifically, to achieve better wireless energy transfer, current passive implantable neurostimulators generally employ magnetic interfaces for positioning. This mechanism aims to fix the application position of the external part and limit its distance from the implanted device, thereby optimizing the stability of energy transmission.
[0053] However, a deeper analysis of this approach reveals its inherent drawbacks. First, the introduction of the magnetic interface directly increases the structural complexity of the implanted component. To accommodate this interface, the implant's volume may need to increase, raising manufacturing costs and potentially impacting physiological compatibility at the implantation site. Second, magnetic positioning requires a high level of precision from the patient. The patient needs to accurately fix the external unit in a specific position and maintain relative stillness, which is difficult to achieve consistently during daily activities, significantly limiting the device's flexibility and ease of use. Any deviation in relative orientation or distance will significantly reduce energy transmission efficiency, leading to insufficient power supply to the implant, affecting the stimulation effect, and potentially introducing safety risks due to unstable power supply. Therefore, finding a simple and cost-effective way to locate the orientation and distance both inside and outside the body, thereby adjusting the wireless energy stimulation parameters in real time to achieve energy coupling balance, is a pressing issue that needs to be addressed.
[0054] Based on this, this application provides an implantable neurostimulation device and its control and positioning methods, which can easily and cost-effectively locate the orientation and distance inside and outside the body, thereby adjusting the stimulation parameters of wireless energy in real time to achieve energy coupling balance and thus obtain better wireless energy transmission effect.
[0055] Please see Figure 1 Some embodiments of this application provide a method for locating an implantable neurostimulation device, the method including steps S100~S500.
[0056] S100: Based on the first preset distance between the stimulation energy transmitter and the stimulation energy receiver, and the preset receiving power required by the stimulation energy receiver, calculate and transmit a preset transmission power to the stimulation energy receiver.
[0057] S200, calculate the preset coupling energy value generated by the stimulus energy receiver after acquiring the preset transmission power, and obtain the actual coupling energy value actually generated by the stimulus energy receiver.
[0058] S300 calculates the test distance between the stimulus energy transmitter and the stimulus energy receiver based on the preset coupling energy value and the actual coupling energy value.
[0059] S400 compares the actual deviation of the test distance from the first preset distance with the preset deviation value.
[0060] S500 determines the true distance between the stimulus energy emitter and the stimulus energy receiver based on the comparison results.
[0061] In this embodiment, the provided method for locating an implantable neurostimulation device calculates and transmits a preset transmission power based on a first preset distance and a preset receiving power between the stimulation energy transmitter and the stimulation energy receiver. It then compares the calculated preset coupling energy value with the actual acquired coupling energy value to infer the test distance. Finally, it compares the actual deviation between the test distance and the first preset distance with a preset deviation value to accurately determine the true distance between the two. This positioning method, without increasing the size and complexity of the device inside the body, can locate and acquire the orientation and distance of the internal part relative to the external part. In other words, this application can simply and cost-effectively locate the orientation and distance inside and outside the body, and adjust the stimulation parameters of the wireless energy (including the output frequency, output amplitude, output timing, etc.) based on this location information to achieve optimal energy transmission efficiency and thus obtain better wireless energy transmission effects.
[0062] Furthermore, in practical applications, the system does not require patients to strictly maintain a fixed relative position or a static state between the external generator and the internal receiver. It can adapt to changes in position during daily activities, which greatly reduces the operational threshold and improves patients' long-term compliance. It provides a precise spatial reference for the stable operation of the wireless energy transmission system, effectively overcoming the risks of reduced energy transmission efficiency, insufficient power supply, or electromagnetic safety caused by human error interference in traditional positioning. Thus, while ensuring the safety of the device, it achieves efficient and reliable wireless energy transmission and better neurostimulation therapy effects.
[0063] In some embodiments, please refer to Figure 2 Step S500 involves determining the true distance between the stimulus energy emitter and the stimulus energy receiver based on the comparison results, including steps S510 to S540.
[0064] S510, when the actual deviation value is greater than the preset deviation value, the first preset distance is fitted with the test distance, and the second preset distance is calculated;
[0065] S520, based on the second preset distance and the preset receiving power required by the stimulation energy receiver, calculates and transmits a preset transmission power to the stimulation energy receiver;
[0066] S530, calculates the test distance between the stimulus energy emitter and the stimulus energy receiver;
[0067] S540, calculate the actual deviation between the second preset distance and the test distance.
[0068] In some embodiments, step S510, fitting the first preset distance to the test distance and calculating the second preset distance, includes: calculating the second preset distance according to a first rule. The first rule is:
[0069] d2 =Kw .d1+(1-K w ).d2+C E
[0070] In the formula, d2 is the second preset distance, d1 is the first preset distance, and K w K represents the weighting coefficient. w The range is 0-1, d2 is the test distance, and C E This is a correction factor.
[0071] In some embodiments, step S520, calculating and transmitting a preset transmission power to the stimulation energy receiver, includes: calculating the preset transmission power according to a second rule. The second rule is:
[0072]
[0073] In the formula, η, a, b, and c are constant coefficients. d1 is a constant, P1 is the first preset distance, P1 is the preset receiving power, and f(p2) is the preset transmitting power.
[0074] In some embodiments, step S530, calculating the test distance between the stimulus energy emitter and the stimulus energy receiver, includes calculating the test distance according to a third rule. The third rule is:
[0075]
[0076] In the formula, d2 is the test distance, CA is the scaling constant, CB is the noise floor constant, CC is the attenuation exponent (CC ranges from 0.5 to 1), and CD is the distance offset constant (CD ranges from greater than 0). Preset coupling energy value, This represents the actual coupling energy value.
[0077] In some embodiments, the actual coupling energy value , where n is the number of wireless sensors.
[0078] Please see Figure 3 Some embodiments of this application also provide a control method for an implantable neurostimulation device. The control method is applicable to the positioning method of the implantable neurostimulation device as described in any of the foregoing embodiments, and includes steps S10 to S20.
[0079] S10 calculates the precise distance between the stimulus energy emitter and the stimulus energy receiver.
[0080] S20, adjust the number of working coils of the stimulation energy emitter according to the accurate distance.
[0081] It should be noted that in the above embodiments, the execution order of the steps in the method is not strictly limited. These steps may not necessarily be executed in the described order, and may be executed in other ways. Moreover, at least a portion of any step may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but may be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but may be executed alternately or in turn with other steps or at least a portion of the sub-steps or stages of other steps. The method is limited to a method that can realize the control of the corresponding neural stimulation device.
[0082] Please see Figure 4 Some embodiments of this application also provide an implantable neurostimulation device, which includes an energy transmitter 1, an energy receiver 2, a control module 3, and a wireless sensor 4. The energy transmitter 1 emits electromagnetic energy. The energy receiver 2 receives the electromagnetic energy emitted by the energy transmitter 1 and couples it into stimulation energy. The control module 3 is communicatively connected to both the energy transmitter 1 and the energy receiver 2. The wireless sensor 4 calculates the test distance between the stimulation energy transmitter and the stimulation energy receiver 2 based on a preset coupling energy value and the actual coupling energy value, and compares the actual deviation of the test distance from a first preset distance with a preset deviation value to determine the true distance between the stimulation energy transmitter and the stimulation energy receiver 2. The wireless sensor 4 is communicatively connected to the energy transmitter 1, the energy receiver 2, and the control module 3. The wireless sensor 4 monitors the energy generated by the energy transmitter 1 and the energy receiver 2 and sends the energy value to the control module 3.
[0083] In some embodiments, wireless energy is used to alter sensing signals around the energy receiver 2.
[0084] In some embodiments, the energy transmitter 1 is configured to transmit wireless energy to the energy receiver 2 via wireless transmission.
[0085] In some embodiments, the energy transmitter 1 may be configured to emit stimulating energy, emit wireless power supply energy, emit wireless charging energy, or a combination of the above wireless energies.
[0086] In some embodiments, the energy transmitter 1 is configured to: adjust the transmission parameters according to the target transmission energy parameters and the preset orientation and first preset distance of the energy receiver 2 relative to the energy transmitter 1, and transmit wireless energy.
[0087] In some embodiments, the wireless sensor 4 includes, but is not limited to, one or more of the following: a linear Hall sensor and a magnetoresistive sensor.
[0088] In some embodiments, the stimulation device further includes a display module. The display module is communicatively connected to the control module 3, and is used to display the operating values of the energy transmitter and the energy receiver 2, and to send control commands to the control module 3.
[0089] In some embodiments, the wireless sensor 4 includes a body and at least one sensing module 41. The sensing module 41 is disposed on the outer surface of the body and is symmetrical about the center of the body.
[0090] In some examples, the wireless sensor 4 can be installed in the following ways: see Figure 5(a), one sensor module 41 is installed symmetrically at 0 degrees; see Figure 5(b), two sensor modules 41 are installed symmetrically at 180 degrees; see Figure 5(c), three sensor modules 41 are installed symmetrically at 120 degrees; and see Figure 5(d), four sensor modules 41 are installed symmetrically at 90 degrees.
[0091] In some examples, the energy receiver 2 receives wirelessly coupled energy and generates a sensor signal with intensity h0. If the wireless sensor is installed as shown in Figure 5(a), the sensing module 41 receives a sensing signal with stimulation parameter h1 and calculates the distance d2 between the wireless energy transmitter assembly and the wireless energy receiver assembly based on h0 and h1.
[0092] In some examples, if the wireless sensors are installed as shown in Figure 5(b), one sensing module 41 receives a sensing signal with stimulation parameter h1, and another sensing module 41 receives a sensing signal with stimulation parameter h2. The distance d2 between the wireless energy transmitter assembly and the wireless energy receiver assembly is calculated based on h0, h1 and h2.
[0093] In some examples, if the wireless sensors are installed as shown in Figure 5(c), the three sensing modules 41 receive sensing signals with stimulation parameters h1, h2 and h3 respectively, and calculate the distance d2 between the wireless energy transmitter assembly and the wireless energy receiver assembly based on h0, h1, h2 and h3.
[0094] In some examples, if the wireless sensor is installed as shown in Figure 5(d), the four sensing modules 41 receive sensing signals with stimulation parameters h0, h1, h2, h3 and h4 respectively, and calculate the distance d2 between the wireless energy transmitter assembly and the wireless energy receiver 2 based on h0, h1, h2, h3 and h4.
[0095] For example, the energy receiver 2 is implanted in the body of the target body to receive wireless energy and generate signals (i.e., sensing signals) that stimulate the patient to produce physiological activities.
[0096] For example, the wireless sensor 4 collects the sensing signal emitted by the energy receiver 2 as a reference signal for the energy transmitter 1, and adjusts the stimulation parameters of the wireless energy emitted by the energy transmitter 1 according to the reference signal.
[0097] For example, the energy transmitter 1 is worn outside the body of the target being tested. It generates a stimulation signal or turns off the stimulation signal based on the sensor signal as a reference signal and the preset parameter signal, and transmits wireless energy to the energy receiver 2 through wireless transmission.
[0098] The preset parameter signals include: the preset orientation of the energy receiver 2 relative to the energy transmitter 1 and the first preset distance.
[0099] In the description of this specification, the references to terms such as "some embodiments," "other embodiments," "ideal embodiments," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example that are included in at least one embodiment or example of this application. In this specification, the illustrative descriptions of the above terms do not necessarily refer to the same embodiments or examples.
[0100] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0101] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.
Claims
1. A method of positioning an implantable neurostimulation device, comprising: The positioning method includes: Based on the first preset distance between the stimulation energy transmitter and the stimulation energy receiver, and the preset receiving power required by the stimulation energy receiver, calculate and transmit a preset transmission power to the stimulation energy receiver; Calculate the preset coupling energy value generated by the stimulus energy receiver after acquiring the preset transmission power, and obtain the actual coupling energy value actually generated by the stimulus energy receiver; The test distance between the stimulation energy transmitter and the stimulation energy receiver is calculated based on the preset coupling energy value and the actual coupling energy value. Compare the actual deviation of the test distance from the first preset distance with the preset deviation value; The actual distance between the stimulus energy emitter and the stimulus energy receiver is determined based on the comparison results.
2. The method of positioning an implantable neurostimulation device of claim 1, wherein, The determination of the true distance between the stimulus energy emitter and the stimulus energy receiver based on the comparison results includes: When the actual deviation value is greater than the preset deviation value, the first preset distance is fitted with the test distance, and the second preset distance is calculated; Based on the second preset distance and the preset receiving power required by the stimulation energy receiver, calculate and transmit a preset transmission power to the stimulation energy receiver; Calculate the test distance between the stimulus energy emitter and the stimulus energy receiver; Calculate the actual deviation between the second preset distance and the test distance.
3. The positioning method for the implantable neurostimulation device according to claim 2, characterized in that, The step of fitting the first preset distance with the test distance and calculating the second preset distance includes: The second preset distance is calculated according to the first rule; the first rule is: d2 = K w .d1 + (1 - K w ).d2 + C E wherein d2 is a second preset distance, d1 is a first preset distance, K w is a weight coefficient, K w is in the range of 0-1, d2 is a test distance, C E is a correction coefficient.
4. The positioning method for the implantable neurostimulation device according to claim 1, characterized in that, The calculation and transmission of a preset transmission power to the stimulation energy receiver includes: The preset transmission power is calculated according to the second rule; the second rule is: In the formula, η, a, b, and c are constant coefficients. d1 is a constant, P1 is the first preset distance, P1 is the preset receiving power, and f(p2) is the preset transmitting power.
5. The positioning method for the implantable neurostimulation device according to claim 1, characterized in that, The calculation of the test distance between the stimulus energy emitter and the stimulus energy receiver includes: The test distance is calculated according to the third rule; the third rule is: In the formula, d2 is the test distance, CA is the scaling constant, CB is the noise floor constant, CC is the attenuation index (the value of CC ranges from 0.5 to 1), and CD is the distance offset constant (the value of CD is greater than 0). Preset coupling energy value, This represents the actual coupling energy value.
6. The positioning method for the implantable neurostimulation device according to claim 5, characterized in that, The actual coupling energy value , where n is the number of wireless sensors.
7. A control method for an implantable neurostimulation device, characterized in that, The control method is applicable to the positioning method of the implantable neurostimulation device as described in any one of claims 1-6, including: Calculate the exact distance between the stimulus energy emitter and the stimulus energy receiver; Adjust the number of working coils of the stimulation energy emitter according to the precise distance.
8. An implantable neurostimulation device, characterized in that, The stimulation device includes: Energy transmitter, used to emit electromagnetic energy; An energy receiver is used to receive the electromagnetic energy emitted by the energy transmitter and couple the electromagnetic energy into stimulating energy. The control module is communicatively connected to the energy transmitter and the energy receiver respectively. The wireless sensor calculates the test distance between the stimulation energy transmitter and the stimulation energy receiver based on the preset coupling energy value and the actual coupling energy value, and compares the actual deviation value between the test distance and the first preset distance with the preset deviation value. Based on the comparison result, the true distance between the stimulation energy transmitter and the stimulation energy receiver is obtained. A wireless sensor is communicatively connected to the energy transmitter, the energy receiver, and the control module, respectively. The wireless sensor is used to monitor the energy generated by the energy transmitter and the energy receiver, and send the energy value to the control module.
9. The implantable neurostimulation device according to claim 8, characterized in that, The stimulation device also includes: The display module is communicatively connected to the control module. The display module is used to display the operating values of the energy transmitter and the energy receiver, and to send control commands to the control module.
10. The implantable neurostimulation device according to claim 8, characterized in that, The wireless sensor includes: Body part; At least one sensing module is disposed on the outer surface of the body portion, and the sensing module is symmetrical about the center of the body portion.