Pulse generator and nerve stimulator

Abstract

The utility model discloses a pulse generator and a nerve stimulator, and the pulse generator comprises a processor which is used for obtaining a waveform parameter to be output, and transmitting a waveform output control signal to a waveform generator according to the waveform parameter; and the waveform generator is connected with the processor and is used for respectively outputting multiple groups of independent pulse signals with different waveforms corresponding to the waveform parameters in different time periods according to the received waveform output control signal, and the pulse signals comprise high-frequency signals and low-frequency signals.

Description

Technical Field

[0001] The present specification relates to the technical field of medical equipment, and in particular to a pulse generator and a neural stimulator. Background Art

[0002] With the development of electrical stimulation therapy technology, neuromuscular electrical stimulation therapy has become an important treatment method in the field of modern medicine. It mainly uses the pulse generator in the neurostimulator to emit pulsed electrical signals to electrically stimulate human nerves or tissues through electrode contacts to block or inhibit the transmission of abnormal nerve signals, thereby restoring motor function.

[0003] However, the pulse generator in the traditional low-frequency SCS stimulator only outputs a low-frequency pulse signal, which the patient is more sensitive to, and it is easy to need to adjust the parameters frequently due to changes in body position or movement, so the parameters of the low-frequency SCS stimulator are difficult to adjust. At the same time, due to the poor penetration of low-frequency signals, the low-frequency SCS stimulator also has high requirements on the accuracy of the implantation position of the electrode contacts. Although the related art can solve the problems caused by the use of low-frequency signals by using high-frequency SCS stimulators, the pulse generator in the high-frequency SCS stimulator only outputs high-frequency pulse signals, and there are also problems such as high power consumption, frequent charging, and insufficient stimulation intensity, which can easily cause stimulation fatigue in patients, thereby further exacerbating power consumption. Utility Model Content

[0004] In order to overcome the problems existing in the related art, this specification provides a pulse generator and a neural stimulator.

[0005] According to a first aspect of an embodiment of this specification, there is provided a pulse generator, the pulse generator comprising: a processor, configured to obtain waveform parameters to be output, and to send a waveform output control signal to a waveform generator according to the waveform parameters;

[0006] A waveform generator is connected to the processor and is used to output multiple groups of independent pulse signals with different waveforms corresponding to the waveform parameters in different time periods according to the received waveform output control signal, and the pulse signals include high-frequency signals and low-frequency signals.

[0007] Optionally, the pulse generator further includes: a waveform parameter queue memory, connected to the processor, for storing multiple groups of preset waveform parameters.

[0008] Optionally, the pulse generator further comprises: a communicator connected to the processor, for receiving a waveform parameter confirmation instruction and a preset waveform parameter storage instruction sent by a user;

[0009] The waveform parameter instruction is used to instruct the processor to obtain at least two groups of preset waveform parameters corresponding to the waveform parameter confirmation instruction from the waveform parameter queue memory as waveform parameters to be output;

[0010] The preset waveform parameter storage instruction is used to store new preset waveform parameters in the waveform parameter queue memory.

[0011] Optionally, the waveform generator includes:

[0012] A current control circuit, used to control the current intensity of the plurality of pulse signals, wherein the current intensity corresponding to the high-frequency signal is different from the current intensity corresponding to the low-frequency signal;

[0013] The waveform output circuit is used to control the electrode contact channels, pulse width, positive and negative pulse width and pulse period of multiple groups of pulse signals.

[0014] Optionally, the pulse generator also includes: an electrode channel selector, connected to the waveform generator, for turning on the corresponding electrode channels based on the control signal sent by the processor when the waveform generator outputs multiple groups of pulse signals, and transmitting the multiple groups of pulse signals to the electrode wires connected to the outside world, wherein the current intensity corresponding to the high-frequency signal is different from the electrode channel corresponding to the low-frequency signal.

[0015] Optionally, the number of the electrode channels is at least two.

[0016] Optionally, the pulse generator further includes: an impedance measurer connected to the electrode channel selector, for monitoring human body impedance values ​​between the electrode channels.

[0017] According to a second aspect of the embodiments of this specification, a neural stimulator is provided, the neural stimulator comprising: a program controller, electrode contacts and a pulse generator as described in the first aspect; wherein the program controller is used to send a waveform parameter confirmation instruction to the pulse generator, and the pulse generator is used to determine the waveform parameters to be output according to the waveform parameter confirmation instruction;

[0018] The electrode contact is connected to one end of the pulse generator, and is used to receive multiple groups of pulse signals, and perform electrical stimulation at the corresponding electrode contact based on the received multiple groups of pulse signals.

[0019] Optionally, the program controller includes: a wireless transmission module, and the program controller is communicatively connected with the pulse generator via the wireless transmission module.

[0020] Optionally, the number of the electrode contacts is at least two.

[0021] The technical solutions provided by the embodiments of this specification may have the following beneficial effects:

[0022] In the embodiment of the present specification, the processor sends a waveform output control signal to the waveform generator according to the waveform parameters to be output, so that the waveform generator can output multiple groups of independent high-frequency and low-frequency pulse signals with different waveforms corresponding to the waveform parameters in different time periods based on the waveform output control signal, that is, alternately output high-frequency pulse signals and low-frequency pulse signals, so that the advantages of outputting high-frequency pulse signals can be retained during electrical stimulation, that is, the sensitivity can be reduced, the coverage of the stimulation signal can be increased, and the implantation accuracy requirements of the electrode contacts can be reduced. At the same time, the advantages of outputting low-frequency pulse signals are taken into account, that is, the power consumption can be reduced, the patient's sensitivity to the stimulation intensity can be retained, and stimulation fatigue can be avoided. And the stimulation intensity of high and low frequency changes can better suppress the adaptability of the body, so that the patient does not need to frequently adjust the parameters, and the treatment effect is better. In addition, only by controlling a pulse generator through the processor, multiple groups of independent high-frequency and low-frequency pulse signals with different waveforms can be output in series in different time periods, and the current structure is simple and stable, and the efficiency is higher.

[0023] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the specification and, together with the description, serve to explain the principles of the specification.

[0025] Figure 1 It is a structural schematic diagram of a pulse generator shown in this specification according to an exemplary embodiment.

[0026] Figure 2 It is a schematic diagram of a current waveform combination shown in this specification according to an exemplary embodiment.

[0027] Figure 3 It is a schematic diagram of another current waveform combination shown in this specification according to an exemplary embodiment.

[0028] Figure 4 Detailed description of the invention is given in detail below.

[0029] Figure 5 It is a structural schematic diagram of a neural stimulator shown in this specification according to an exemplary embodiment. DETAILED DESCRIPTION

[0030] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementations described in the following exemplary embodiments do not represent all implementations consistent with this specification. Instead, they are merely examples of devices and methods consistent with some aspects of this specification as detailed in the appended claims.

[0031] The terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit this specification. The singular forms "a", "the" and "the" used in this specification and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0032] It should be understood that although the terms first, second, third, etc. may be used in this specification to describe various information, this information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of this specification, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0033] First, the terms involved in one or more embodiments of this specification are explained.

[0034] With the development of electrical stimulation therapy technology, neuromuscular electrical stimulation therapy has become an important treatment method in the field of modern medicine. It mainly uses a neurostimulator to emit pulsed electrical signals to electrically stimulate human nerves or tissues to block or inhibit the transmission of abnormal nerve signals, thereby restoring motor function.

[0035] Since human nerves are more sensitive to low-frequency stimulation signals, the pulse generator of traditional low-frequency SCS stimulators only outputs low-frequency signals. Slight changes in the intensity of low-frequency signal stimulation will lead to strong stimulation sensations, and patients are prone to frequently adjusting parameters due to changes in body position or movement, so parameter adjustment is difficult. At the same time, due to the poor penetration of low-frequency signals, low-frequency SCS stimulators also have high requirements for the accuracy of the implantation position of electrode contacts.

[0036] Although the related art can solve the problems caused by using low-frequency signals by using high-frequency SCS stimulators, the pulse generator of high-frequency SCS stimulators only outputs high-frequency signals, which easily leads to a significant increase in the power consumption of the neurostimulator, requiring frequent charging, and a poor user experience. In addition, patients are not sensitive enough to the stimulation intensity of high-frequency signals. When the stimulation energy is too large, it is easy to cause stimulation fatigue in patients, making the nerves tolerant, thereby further increasing power consumption.

[0037] Therefore, the present specification provides a pulse generator that can alternately output high-frequency pulse signals and low-frequency pulse signals, thereby retaining the advantages of outputting high-frequency signals and low-frequency signals at the same time during electrical stimulation, resulting in better therapeutic effects.

[0038] Next, the embodiments of this specification are described in detail.

[0039] like Figure 1 As shown, Figure 1 1 is a schematic diagram of the structure of a pulse generator according to an exemplary embodiment of the present specification. The present application discloses a pulse generator, which includes a processor 101 and a waveform generator 102 .

[0040] Wherein, the processor is used to obtain the waveform parameters to be output, and send a waveform output control signal to the waveform generator according to the waveform parameters.

[0041] The waveform generator is connected to the processor and is used to output multiple groups of independent pulse signals with different waveforms corresponding to the waveform parameters in different time periods according to the received waveform output control signal, and the pulse signals include high-frequency signals and low-frequency signals.

[0042] The processor receives waveform parameter data to be output, and sends a waveform output control signal to the waveform generator according to the waveform parameter data to control the waveform generator. Specifically, the controller controls the waveform generator to output multiple groups of independent pulse signals with different waveforms corresponding to the waveform parameters in different time periods according to the waveform parameters to be output. Among the multiple groups of independent pulse signals with different waveforms, at least one group of stimulation signals corresponding to the waveform parameters is a low-frequency signal, and at least one group of stimulation signals corresponding to the waveform parameters is a high-frequency signal.

[0043] In an exemplary embodiment, the pulse generator further includes: a waveform parameter queue memory connected to the processor and used to store multiple groups of preset waveform parameters.

[0044] Specifically, in the embodiment of the present specification, a maximum of ten sets of preset waveform parameters are pre-stored in the waveform parameter memory in the pulse generator.

[0045] In an exemplary embodiment, the pulse generator also includes: a communicator, connected to the processor, for receiving waveform parameter confirmation instructions and preset waveform parameter storage instructions sent by a user; the waveform parameter instructions are used to instruct the processor to obtain at least two groups of preset waveform parameters corresponding to the waveform parameter confirmation instructions from the waveform parameter queue memory as waveform parameters to be output; the preset waveform parameter storage instructions are used to store new preset waveform parameters in the waveform parameter queue memory.

[0046] Specifically, the pulse generator receives the waveform parameter confirmation instruction and the preset waveform parameter storage instruction sent by the user through the communicator. In the variable frequency mode, the communicator sends the waveform parameter confirmation instruction sent by the user to the processor, and the processor obtains at least two groups of preset waveform parameters corresponding to the waveform parameter confirmation instruction from the waveform parameter queue memory as the waveform parameters to be output according to the waveform parameter confirmation instruction, and controls the waveform generator to alternately output the pulse signals corresponding to the at least two groups of waveform parameters obtained.

[0047] In another embodiment, in the mixing mode, the processor obtains all preset waveform parameters corresponding to the waveform parameter confirmation instruction from the waveform parameter queue memory as waveform parameters to be output according to the waveform parameter confirmation instruction, and controls the waveform generator to alternately output pulse signals corresponding to all the obtained waveform parameters.

[0048] At the same time, the pulse generator can also receive preset waveform parameter storage instructions sent by the user through the communicator. In an exemplary embodiment, the user can configure one or more sets of waveform parameters to be output, and send the configured waveform parameters to the pulse generator for storage. Specifically, the communicator on the pulse generator receives the preset waveform parameter storage instruction sent by the user and transmits it to the processor. The processor transmits the corresponding waveform parameters to the waveform parameter queue memory according to the preset waveform parameter storage instruction to complete the configuration. In this case, the processor will automatically select the received one or more sets of waveform parameters that have been configured as part of the waveform parameter combination among the multiple sets of waveform parameters output in the variable frequency mode.

[0049] At the same time, the configured waveform parameters can also be stored as preset waveform parameters for subsequent user selection. Among them, by modifying the data in the original preset multiple sets of waveform parameters in the pulse generator, it is possible to add, replace or delete the preset multiple sets of waveform parameters according to user needs.

[0050] After the controller confirms the waveform parameters to be output, based on the principle of time-division multiplexing, the waveform generator is controlled to output multiple groups of independent pulse signals with different waveforms corresponding to the waveform parameters in different time periods. Among the at least two groups of waveform parameters selected, at least one group of the waveform parameters corresponding to the stimulation signal is a low-frequency signal, and at least one group of the waveform parameters corresponding to the stimulation signal is a high-frequency signal.

[0051] Figure 2 is a schematic diagram of a current waveform combination according to an exemplary embodiment of the present specification. Specifically, assuming that two sets of waveform parameters need to be output, and their currents are set to CH1 and CH2 respectively, the corresponding current waveforms are as follows: Figure 2 As shown, reference Figure 2 , assuming that the stimulation signal corresponding to the current CH1 is a low-frequency LF1 signal (such as 100uS, 1mA, 2857H, zX1), and the stimulation signal corresponding to the current CH2 is a high-frequency HF2 signal (such as 10uS, 1mA, 10kHz, X63). Then, by combining the waveforms of the current CH1 and the current CH2 and outputting them alternately, that is, outputting the waveforms of the current CH1 and the current CH2 in series, the current waveform image corresponding to the mixed frequency signal MixWave can be obtained after superposition, and the low-frequency LF1 and the high-frequency HF2 are combined and superimposed to obtain MF3 (100uS, 1mA, 150Hz), thereby realizing the output of the low-frequency LF1 pulse signal corresponding to the current CH1 and the high-frequency HF2 pulse signal corresponding to the current CH2 in different time periods, and in the embodiment of this specification, multiple groups of pulse signals are output in series, the circuit is simple, stable, and more efficient. While reducing power consumption, it will not significantly reduce the patient's perception of electrical stimulation; while improving signal penetration and reducing the impact of movement, it will not cause excessive stimulation energy and cause stimulation fatigue.

[0052] In an exemplary embodiment, under the premise that the selected waveform parameters include at least one group of stimulation signals corresponding to the waveform parameters being a low-frequency signal and at least one group of stimulation signals corresponding to the waveform parameters being a high-frequency signal, the stimulation signals corresponding to the at least two groups of selected waveform parameters may be a high-frequency signal and multiple low-frequency signals; and multiple groups of multiple high-frequency signals and multiple low-frequency signals. Those skilled in the art may make a selection according to their own needs, and this specification does not limit this.

[0053] In the embodiments of the present specification, the pulse generator can alternately output high-frequency signals and low-frequency signals corresponding to different current groups. On this basis, it can also combine by adding other current groups and changing the number of high-frequency signals and low-frequency signals in the combination, so as to obtain a richer mixing effect and further improve the quality of treatment.

[0054] In an exemplary embodiment, the waveform parameters include at least one of the following: current intensity, electrode contact channel, pulse width, positive and negative pulse widths, and pulse period.

[0055] refer to Figure 2 From the current waveform image corresponding to the medium current CH1, we can know the waveform parameters corresponding to the current CH1: PP is the positive pulse width, NP is the negative pulse width, the length represents the pulse width, that is, the length on the time axis, and the width represents the intensity of the current. The length between the two waveform images on the time axis represents the frequency of the current.

[0056] In an exemplary embodiment, the data of the multiple sets of waveform parameters selected may be completely identical, partially identical, have some parameters identical, or completely different in many blocks, which may be specifically configured according to the needs of technicians in this field, and this specification does not impose any restrictions on this.

[0057] In an exemplary embodiment, if Figure 4 As shown, Figure 4 This is a circuit diagram of a waveform generator according to an exemplary embodiment of the present specification. The waveform generator includes: a current control circuit for controlling the current intensity of multiple groups of pulse signals, wherein the current intensity corresponding to the high-frequency signal is different from the current intensity corresponding to the low-frequency signal; a waveform output circuit for controlling the electrode contact channel, pulse width, positive and negative pulse width, and pulse period of the multiple groups of pulse signals.

[0058] Specifically, the processor controls the pulse intensity of the pulse signal by controlling the DAC in the current control circuit based on the received waveform parameters, that is, the current intensity in the control circuit. Similarly, the processor can control the pulse width, positive and negative pulse width, pulse period, and electrode contact channel of the pulse signal by controlling the PWM and BLC in the waveform output circuit based on the received waveform parameters.

[0059] The embodiments of this specification only need to control two modules, namely the current source in the current control circuit and the phase-changing balancer in the waveform output circuit, to form a waveform generator. The circuit structure is simple and stable, and the controller can quickly control the waveform generator based on the waveform parameters to serially output multiple groups of independent pulse signals with different waveforms corresponding to the waveform parameters in different time periods. The control method is simple, which greatly improves the control efficiency, and the control parameters are more accurate when output.

[0060] In the embodiments of this specification, the current intensity corresponding to the high-frequency signal is different from the current intensity corresponding to the low-frequency signal. Figure 3As shown, assuming that there are current CH1 and current CH2, the stimulation signal corresponding to current CH1 is a low-frequency LF1 signal, and the stimulation signal corresponding to current CH2 is a high-frequency HF2 signal, wherein the current intensity of the low-frequency LF1 signal corresponding to current CH1 is different from the current intensity of the high-frequency HF2 signal corresponding to current CH2, and when the high-frequency signal and the low-frequency signal are output alternately, the current intensity also changes alternately.

[0061] Since different patients have different sensitivities to electrical stimulation, for patients with higher sensitivity, the current intensity needs to be reduced to reduce the output amplitude of the electrical stimulation, while for patients with lower sensitivity, the current intensity needs to be increased so that the pulse signal can cover the body's pain signal.

[0062] When a patient is stimulated by a low-frequency or high-frequency pulse signal of the same current intensity for a long time, the body's adaptability reduces the effect of electrical stimulation. By setting the current intensities of high-frequency signals and low-frequency signals to be different, multiple groups of pulse signals with different waveforms are output alternately, and different current intensities are output, the output amplitude of electrical stimulation can be continuously changed, thereby achieving the effect of enhancing the inhibition of the body's adaptability and improving the quality of treatment.

[0063] In another embodiment, the current intensity corresponding to the high-frequency signal and the current intensity corresponding to the low-frequency signal in the multiple groups of pulse signals may also be the same, and this specification does not limit this.

[0064] In an exemplary embodiment, the pulse generator also includes: an electrode channel selector, connected to the waveform generator, for conducting the corresponding electrode channels based on the control signal sent by the processor when the waveform generator outputs multiple groups of pulse signals, and transmitting the multiple groups of pulse signals to the electrode wires connected to the outside world.

[0065] Specifically, when the processor controls the waveform output circuit, it sends a control signal to the electrode channel selector, controls the electrode channel selector to turn on the electrode channel corresponding to the pulse signal of the waveform parameter to be output, and transmits the multiple groups of pulse signals to the electrode wires connected to the outside world to output the pulse signal.

[0066] Among them, in the embodiment of this specification, the current intensity corresponding to the high-frequency signal is different from the electrode channel corresponding to the low-frequency signal. Assuming that there are current CH1 and current CH2, the stimulation signal corresponding to current CH1 is a low-frequency LF1 signal, and the stimulation signal corresponding to current CH2 is a high-frequency HF2 signal, wherein the current intensity of the low-frequency LF1 signal corresponding to current CH1 is different from the electrode channel of the high-frequency HF2 signal corresponding to current CH2, current CH1 outputs a low-frequency signal through electrode channel 1 and electrode channel 2, and current CH2 outputs a high-frequency signal through electrode channel 3 and electrode channel 4.

[0067] Through the above arrangement, a low-frequency signal is output between electrode channel 1 and electrode channel 2, and a high-frequency signal is output between electrode channel 3 and electrode channel 4, thereby increasing the effective range of the pulse signal.

[0068] In another embodiment, the current intensity corresponding to the high-frequency signal in the multiple groups of pulse signals may be the same as the electrode contact channel corresponding to the low-frequency signal, and this specification does not limit this.

[0069] In an exemplary embodiment, the number of electrode channels is at least two. As can be seen from the foregoing, in the embodiment of this specification, the current intensity corresponding to the high-frequency signal is different from the electrode channel corresponding to the low-frequency signal, in which case there are four electrode channels. In another embodiment, if the current intensity corresponding to the high-frequency signal is the same as the electrode channel corresponding to the low-frequency signal, in which case there are two electrode channels.

[0070] In an exemplary embodiment, the pulse generator further includes: an impedance measurer connected to the electrode channel selector, for monitoring human body impedance values ​​between the electrode channels.

[0071] Specifically, the impedance meter calculates the human body impedance value by injecting a small current into the electrode channel and measuring the voltage, thereby adjusting the electrical stimulation parameters according to the impedance value, helping patients adapt to the output of pulse signals, avoiding stimulation, and improving the pulse signal output effect, while ensuring safety during the pulse signal output process.

[0072] In an exemplary embodiment, the processor is also used to process multiple tasks, including a process for performing a waveform parameter switching task, and each process is set with a different priority. The waveform parameter switching task refers to the situation where independent pulse signals corresponding to waveform parameters of different current groups are serially output in different time periods. When a group of pulse signals are output, another group of pulse signals with different current waveforms needs to be output. At this time, the task of switching waveform parameters is performed, and the task is set with a corresponding preset time period. When the processor detects that the preset time period for executing the waveform parameter switching task has been entered, the priority of the process performing the waveform parameter switching task is modulated to the highest level, and the waveform parameter switching is performed first.

[0073] In another embodiment, the processor in the pulse generator is used to process multiple tasks, including a waveform parameter switching task, and the multiple tasks are in the same process, and each task is set with a different priority. When the processor detects that a preset time period for executing the waveform parameter switching task has been entered, the priority of the waveform parameter switching task is adjusted to the highest, and the waveform parameter switching task is executed first.

[0074] By raising the priority of the waveform parameter task when detecting the preset time period of the waveform parameter task, the processor will not respond to other tasks when processing the waveform parameter switching task, and will concentrate on switching the waveform parameters. After the switching is completed, other tasks will be executed, thereby achieving timely switching of waveform parameters and avoiding problems such as the inability to correctly regulate the output stimulation amount due to untimely switching, stabilizing the output and improving the electrical stimulation effect.

[0075] In the embodiment of the present specification, the processor sends a waveform output control signal to the waveform generator according to the waveform parameters to be output, so that the waveform generator can output multiple groups of independent high-frequency and low-frequency pulse signals with different waveforms corresponding to the waveform parameters in different time periods based on the waveform output control signal, that is, alternately output high-frequency pulse signals and low-frequency pulse signals, so that the advantages of outputting high-frequency pulse signals can be retained during electrical stimulation, that is, the sensitivity can be reduced, the coverage of the stimulation signal can be increased, and the implantation accuracy requirements of the electrode contacts can be reduced. At the same time, the advantages of outputting low-frequency pulse signals are taken into account, that is, the power consumption can be reduced, the patient's sensitivity to the stimulation intensity can be retained, and stimulation fatigue can be avoided. And the stimulation intensity of high and low frequency changes can better suppress the adaptability of the body, so that the patient does not need to frequently adjust the parameters, and the treatment effect is better. In addition, only by controlling a pulse generator through the processor, multiple groups of independent high-frequency and low-frequency pulse signals with different waveforms can be output in series in different time periods, and the current structure is simple and stable, and the efficiency is higher.

[0076] The present application also discloses a neural stimulator, such as Figure 5 As shown, Figure 5 is a schematic diagram of a structure of a neural stimulator according to an exemplary embodiment of the present specification. The neural stimulator includes a programmer, electrode contacts and Figure 1 The pulse generator described in the corresponding embodiment.

[0077] Wherein, the program controller is used to send a waveform parameter confirmation instruction to the pulse generator, and the pulse generator is used to determine the waveform parameters to be output according to the waveform parameter confirmation instruction.

[0078] Specifically, when the neurostimulator is started, the programmer confirms the waveform parameters to be output and sends a waveform parameter confirmation instruction to the pulse generator. In an exemplary embodiment, when the neurostimulator is started, the user operates the programmer, selects the waveform parameters to be output and sends a waveform parameter confirmation instruction to the pulse generator.

[0079] In another embodiment, after setting the default waveform parameters to be output, the programmer can automatically select the default waveform parameters when the neurostimulator is started, and send a waveform parameter confirmation instruction to the pulse generator. This manual does not limit this.

[0080] In an exemplary embodiment, a user can configure one or more sets of waveform parameters to be output on the programmer, and send a preset waveform parameter storage instruction to the pulse generator.

[0081] The electrode contact is connected to one end of the pulse generator, and is used to receive multiple groups of pulse signals, and perform electrical stimulation at the corresponding electrode contact based on the received multiple groups of pulse signals.

[0082] One end of the electrode contact is connected to the pulse generator through an electrode wire, and the other end is connected to the patient. After receiving multiple sets of pulse signals output by the pulse generator, the electrode contact performs electrical stimulation at the electrode contact corresponding to the pulse signal based on the received multiple sets of pulse signals. For example, assuming that there is a current CH1, and the waveform parameters record that the electrode channels corresponding to the current CH1 are electrode contact 1 and electrode contact 2, then the current CH1 outputs a pulse signal through electrode contact 1 and electrode contact 2.

[0083] In an exemplary embodiment, the program controller includes: a wireless transmission module, and the program controller is communicatively connected with the pulse generator via the wireless transmission module.

[0084] Specifically, in the embodiments of the present specification, the program controller and the pulse generator are wirelessly connected via Bluetooth. Taking the user selecting parameters as an example, after the user selects the waveform parameter data of the current group to be output on the program controller, the waveform parameter confirmation instruction or the preset waveform parameter storage instruction is transmitted to the pulse transmitter via Bluetooth wireless transmission, and the pulse generator performs alternating output of the corresponding pulse signal according to the received waveform parameter confirmation instruction.

[0085] In another embodiment, the waveform parameter confirmation instruction may be sent to the pulse generator through NFC induction, which is not limited in this specification.

[0086] In an exemplary embodiment, the number of electrode contacts is at least two. Specifically, in the embodiment of this specification, the current intensity corresponding to the high-frequency signal is different from the electrode channel corresponding to the low-frequency signal, and one electrode channel corresponds to one electrode contact. It can be seen that there are four electrode contacts in this case. In another embodiment, if the current intensity corresponding to the high-frequency signal is the same as the electrode channel corresponding to the low-frequency signal, there are two electrode contacts in this case.

[0087] In addition, by properly placing the electrode contacts corresponding to the high-frequency signal and the electrode contacts corresponding to the low-frequency signal, the therapeutic effect can be further improved. For example, during nerve transmission, the low-frequency signal can suppress pain and the high-frequency signal can block pain. If a high-frequency signal is set at the electrode contact near the brain end and a low-frequency signal is set at the electrode contact far from the brain end, additional therapeutic effects can be produced, thereby improving the quality of treatment.

[0088] In the embodiment of the present specification, the processor sends a waveform output control signal to the waveform generator according to the waveform parameters to be output, so that the waveform generator can output multiple groups of independent high-frequency and low-frequency pulse signals with different waveforms corresponding to the waveform parameters in different time periods based on the waveform output control signal, that is, alternately output high-frequency pulse signals and low-frequency pulse signals, so that the advantages of outputting high-frequency pulse signals can be retained during electrical stimulation, that is, the sensitivity can be reduced, the coverage of the stimulation signal can be increased, and the implantation accuracy requirements of the electrode contacts can be reduced. At the same time, the advantages of outputting low-frequency pulse signals are taken into account, that is, the power consumption can be reduced, the patient's sensitivity to the stimulation intensity can be retained, and stimulation fatigue can be avoided. And the stimulation intensity of high and low frequency changes can better suppress the adaptability of the body, so that the patient does not need to frequently adjust the parameters, and the treatment effect is better. In addition, only by controlling a pulse generator through the processor, multiple groups of independent high-frequency and low-frequency pulse signals with different waveforms can be output in series in different time periods, and the current structure is simple and stable, and the efficiency is higher.

[0089] The above is only a preferred implementation mode of the present application, and does not constitute any form of limitation to the present application. Although the present application has been disclosed as a preferred implementation mode as above, it is not used to limit the present application. Any technician familiar with this profession can make some changes or modify the technical contents disclosed above into equivalent implementation modes without departing from the scope of the technical solution of the present application. However, any simple modification, equivalent change and modification made to the above implementation modes based on the technical essence of the present application without departing from the content of the technical solution of the present application still fall within the scope of the technical solution of the present application.

Claims

1. A pulse generator, characterized in that: include: A processor, used for acquiring waveform parameters to be output, and sending a waveform output control signal to the waveform generator according to the waveform parameters; A waveform generator, connected to the processor, configured to output a plurality of groups of independent pulse signals with different waveforms corresponding to the waveform parameters in different time periods according to the received waveform output control signal, wherein the pulse signals include high-frequency signals and low-frequency signals; The electrode channel selector is connected to the waveform generator and is used to conduct the corresponding electrode channels based on the control signal sent by the processor when the waveform generator outputs multiple groups of pulse signals, and transmit the multiple groups of pulse signals to the electrode wires connected to the outside world, wherein the current intensity corresponding to the high-frequency signal is different from the electrode channel corresponding to the low-frequency signal.

2. The pulse generator according to claim 1, characterized in that The pulse generator further comprises: a waveform parameter queue memory connected to the processor and used for storing a plurality of sets of preset waveform parameters.

3. The pulse generator according to claim 2, characterized in that The pulse generator further comprises: a communicator connected to the processor and configured to receive a waveform parameter confirmation instruction and a preset waveform parameter storage instruction sent by a user; The waveform parameter instruction is used to instruct the processor to obtain at least two groups of preset waveform parameters corresponding to the waveform parameter confirmation instruction from the waveform parameter queue memory as waveform parameters to be output; The preset waveform parameter storage instruction is used to store new preset waveform parameters in the waveform parameter queue memory.

4. The pulse generator according to claim 1, characterized in that The waveform generator comprises: A current control circuit, used to control the current intensity of the plurality of pulse signals, wherein the current intensity corresponding to the high-frequency signal is different from the current intensity corresponding to the low-frequency signal; The waveform output circuit is used to control the electrode contact channels, pulse width, positive and negative pulse width and pulse period of multiple groups of pulse signals.

5. The pulse generator according to claim 1, characterized in that: The number of the electrode channels is at least two.

6. The pulse generator according to claim 1, characterized in that The pulse generator further comprises: an impedance measurer connected to the electrode channel selector and used for monitoring the human body impedance value between the electrode channels.

7. A neural stimulator, characterized in that: It comprises a program controller, electrode contacts and a pulse generator as claimed in any one of claims 1 to 6; wherein, The program controller is used to send a waveform parameter confirmation instruction to the pulse generator, and the pulse generator is used to determine the waveform parameters to be output according to the waveform parameter confirmation instruction; The electrode contact is connected to one end of the pulse generator, and is used to receive multiple groups of pulse signals, and perform electrical stimulation at the corresponding electrode contact based on the received multiple groups of pulse signals.

8. The neurostimulator according to claim 7, characterized in that The program controller comprises a wireless transmission module, and the program controller is connected to the pulse generator for communication via the wireless transmission module.

9. The neural stimulator according to claim 7, characterized in that: The number of the electrode contacts is at least two.

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