Phrenic nerve stimulation device

Abstract

The present invention discloses a phrenic nerve stimulation device, which is applied to the field of nerve stimulation. The processor in the phrenic nerve stimulation device determines the diaphragmatic muscle state of the user, controls the electrical stimulation module in the phrenic nerve stimulation device to generate a stimulation action on the diaphragmatic muscle with abnormal state of the user according to the diaphragmatic muscle state; judges whether the diaphragmatic muscle state of the user after the stimulation action is in a normal state; when the diaphragmatic muscle state after the stimulation action is in a normal state, maintains the stimulation action and returns to the step of determining the diaphragmatic muscle state of the user; when the diaphragmatic muscle state after the stimulation action is not in a normal state, adjusts the stimulation action and returns to the step of determining the diaphragmatic muscle state of the user. By confirming the diaphragmatic muscle state of the user and then performing corresponding stimulation actions on the diaphragmatic muscle in abnormal state, and at the same time determining whether the diaphragmatic muscle returns to the normal state after stimulation during the stimulation process, and adjusting the stimulation action in time according to the feedback of the diaphragmatic muscle state after stimulation, the possibility of harm to the user is reduced.

Description

Technical Field

[0001] The present invention relates to the field of nerve stimulation, and particularly to a phrenic nerve stimulation device. Background Art

[0002] The diaphragm is an important respiratory muscle of the body, accounting for 60% - 80% of the functions of all respiratory muscles. By electrically stimulating the phrenic nerve to cause the diaphragm to contract to achieve a ventilation effect, it is possible to improve the diaphragm circulation, and has obvious effects on eliminating diaphragm fatigue, increasing the contractility of the diaphragm, expanding the thoracic cavity volume, and increasing the tidal volume. In the prior art, when the processor in the phrenic nerve stimulation device controls the electrical stimulation module in the phrenic nerve stimulation device to generate a stimulation action on the user's phrenic nerve, it often fails to master the accuracy of the stimulation action, resulting in over-stimulation of the user's phrenic nerve and being unable to improve the user's diaphragm state. Summary of the Invention

[0003] The purpose of the present invention is to provide a phrenic nerve stimulation device, which can confirm the state of the user's diaphragm and then perform corresponding stimulation actions on the abnormally state diaphragm, and at the same time determine whether the diaphragm returns to the normal state after stimulation during the stimulation process, and timely adjust the stimulation action according to the feedback of the diaphragm state after stimulation, reducing the possibility of harm to the user.

[0004] To solve the above technical problems, the present invention provides a phrenic nerve stimulation device, including:

[0005] A memory for storing a computer program;

[0006] A processor for implementing the following steps when executing the computer program:

[0007] Determine the state of the user's diaphragm, where the diaphragm state includes a normal state, an abnormal state of the left diaphragm, an abnormal state of the right diaphragm, and an abnormal state of both diaphragms;

[0008] Control the electrical stimulation module in the phrenic nerve stimulation device to generate a stimulation action on the abnormally state diaphragm of the user according to the diaphragm state;

[0009] Judge whether the state of the user's diaphragm after the stimulation action is in a normal state;

[0010] When the state of the diaphragm after the stimulation action is in a normal state, maintain the stimulation action and return to the step of determining the state of the user's diaphragm;

[0011] When the state of the diaphragm after the stimulation action is not in a normal state, adjust the stimulation action and return to the step of determining the state of the user's diaphragm.

[0012] Preferably, determining the state of the user's diaphragm includes:

[0013] Receive the left diaphragmatic muscle movement distance and the right diaphragmatic muscle movement distance of the user in N respiratory cycles sent by the diaphragmatic muscle detection module in the phrenic nerve stimulation device, where N is an integer greater than 1;

[0014] Take the average of the N left diaphragmatic muscle movement distances to obtain the initial left diaphragmatic muscle movement distance;

[0015] Take the average of the N right diaphragmatic muscle movement distances to obtain the initial right diaphragmatic muscle movement distance; Determine the diaphragmatic muscle state of the user according to the initial left diaphragmatic muscle movement distance and the initial right diaphragmatic muscle movement distance.

[0016] Preferably, determining the diaphragmatic muscle state of the user according to the initial left diaphragmatic muscle movement distance and the initial right diaphragmatic muscle movement distance includes:

[0017] If both the initial left diaphragmatic muscle movement distance and the initial right diaphragmatic muscle movement distance are within the normal movement distance range and the movement directions are the same, then determine that the diaphragmatic muscle state of the user is in a normal state;

[0018] If the initial left diaphragmatic muscle movement distance is not within the normal movement distance range and the initial right diaphragmatic muscle movement distance is within the normal movement distance range, then determine that the diaphragmatic muscle state of the user is an abnormal state of the left diaphragmatic muscle;

[0019] If the initial left diaphragmatic muscle movement distance is within the normal movement distance range and the initial right diaphragmatic muscle movement distance is not within the normal movement distance range, then determine that the diaphragmatic muscle state of the user is an abnormal state of the right diaphragmatic muscle;

[0020] If both the initial left diaphragmatic muscle movement distance and the initial right diaphragmatic muscle movement distance are not within the normal movement distance range, then determine that the diaphragmatic muscle state of the user is an abnormal state of both diaphragmatic muscles.

[0021] Preferably, controlling the electrical stimulation module in the phrenic nerve stimulation device to generate a stimulation action on the diaphragmatic muscle with abnormal state of the user according to the diaphragmatic muscle state includes:

[0022] When the diaphragmatic muscle state of the user is an abnormal state of both diaphragmatic muscles, control the electrical stimulation module in the phrenic nerve stimulation device to generate a stimulation action on the left diaphragmatic muscle and the right diaphragmatic muscle of the user simultaneously;

[0023] When the diaphragmatic muscle state of the user is an abnormal state of the left diaphragmatic muscle, control the electrical stimulation module in the phrenic nerve stimulation device to generate a stimulation action on the left diaphragmatic muscle of the user;

[0024] When the diaphragmatic muscle state of the user is an abnormal state of the right diaphragmatic muscle, control the electrical stimulation module in the phrenic nerve stimulation device to generate a stimulation action on the right diaphragmatic muscle of the user.

[0025] Preferably, controlling the electrical stimulation module in the phrenic nerve stimulation device to generate a stimulation action on the abnormally functioning diaphragm of the user according to the state of the diaphragm includes:

[0026] Controlling the electrical stimulation module in the phrenic nerve stimulation device and the electrode patches disposed on the user to generate a stimulation action on the abnormally functioning diaphragm of the user;

[0027] The phrenic nerve stimulation device further includes an electrode patch detection module and a display module;

[0028] The electrode patch detection module is used to detect whether the electrode patches are detached; the display module is used to display the electrode patch detachment information, the current diaphragm movement distance, and the parameters of the stimulation action;

[0029] The step further includes:

[0030] When receiving the electrode patch detachment signal sent by the electrode patch detection module, controlling the display module to display the detachment of the electrode patches.

[0031] Preferably, before determining the state of the user's diaphragm, it further includes:

[0032] Receiving the initial blood oxygen concentration of the user sent by the blood oxygen detection module in the phrenic nerve stimulation device;

[0033] After the state of the diaphragm after the stimulation action is in a normal state, it further includes:

[0034] Receiving the current blood oxygen concentration of the user sent by the blood oxygen detection module in the phrenic nerve stimulation device;

[0035] Controlling the display module to display the blood oxygen concentration information output by the blood oxygen detection module;

[0036] Determining whether the current blood oxygen concentration is not less than a first preset multiple of the initial blood oxygen concentration;

[0037] If so, enter the step of adjusting the stimulation action and return to the step of determining the state of the user's diaphragm;

[0038] If not, enter the step of adjusting the stimulation action and return to the step of determining the state of the user's diaphragm.

[0039] Preferably, the stimulation action includes outputting a current to the phrenic nerve of the user, and the output current includes a preset number of levels;

[0040] When the current number of times of phrenic nerve stimulation is M times, where M is an integer greater than 1, when the state of the diaphragm after the stimulation action is not in a normal state, adjusting the stimulation action and returning to the step of determining the state of the user's diaphragm includes:

[0041] Determine whether the M-th left diaphragmatic muscle movement distance and / or the M-th right diaphragmatic muscle movement distance is less than a second preset multiple of the initial left diaphragmatic muscle movement distance and / or the initial right diaphragmatic muscle movement distance;

[0042] If it is less than the second preset multiple of the initial left diaphragmatic muscle movement distance and / or the initial right diaphragmatic muscle movement distance, then determine whether the M-th left diaphragmatic muscle movement distance and / or the M-th right diaphragmatic muscle movement distance is greater than a third preset multiple of the (M - 1)-th left diaphragmatic muscle movement distance and / or the (M - 1)-th right diaphragmatic muscle movement distance; the third preset multiple is less than the second preset multiple;

[0043] If it is not greater than the third preset multiple of the (M - 1)-th left diaphragmatic muscle movement distance and / or the (M - 1)-th right diaphragmatic muscle movement distance, then increase the output current by one level on the basis of the stimulation action at the M-th time, and return to the step of determining the diaphragmatic muscle state of the user.

[0044] Preferably, after determining whether the M-th left diaphragmatic muscle movement distance and / or the M-th right diaphragmatic muscle movement distance is greater than the third preset multiple of the (M - 1)-th left diaphragmatic muscle movement distance and / or the (M - 1)-th right diaphragmatic muscle movement distance, it further includes:

[0045] If it is greater than the third preset multiple of the (M - 1)-th left diaphragmatic muscle movement distance and / or the (M - 1)-th right diaphragmatic muscle movement distance, then maintain the stimulation action, and return to the step of determining the diaphragmatic muscle state of the user.

[0046] Preferably, after determining whether the M-th left diaphragmatic muscle movement distance and / or the M-th right diaphragmatic muscle movement distance is less than the second preset multiple of the initial left diaphragmatic muscle movement distance and / or the initial right diaphragmatic muscle movement distance, it further includes:

[0047] If it is not less than the second preset multiple of the initial left diaphragmatic muscle movement distance and / or the initial right diaphragmatic muscle movement distance, then determine whether the M-th left diaphragmatic muscle movement distance and / or the M-th right diaphragmatic muscle movement distance is less than the third preset multiple of the (M - 1)-th left diaphragmatic muscle movement distance and / or the (M - 1)-th right diaphragmatic muscle movement distance; the third preset multiple is less than the second preset multiple;

[0048] If it is less than the third preset multiple of the (M - 1)-th left diaphragmatic muscle movement distance and / or the (M - 1)-th right diaphragmatic muscle movement distance, adjust the current within the range of the current output current level, and return to the step of determining the diaphragmatic muscle state of the user.

[0049] Preferably, it is determined whether the left diaphragmatic muscle movement distance at the Mth time and / or the right diaphragmatic muscle movement distance at the Mth time is less than a third preset multiple of the left diaphragmatic muscle movement distance at the (M - 1)th time and / or the right diaphragmatic muscle movement distance at the (M - 1)th time; after the third preset multiple is less than the second preset multiple, it further includes:

[0050] If it is not less than the third preset multiple of the left diaphragmatic muscle movement distance at the (M - 1)th time and / or the right diaphragmatic muscle movement distance at the (M - 1)th time, it is determined whether the blood oxygen concentration at the Mth time is greater than a first preset multiple of the blood oxygen concentration at the (M - 1)th time;

[0051] If it is greater than the first preset multiple of the blood oxygen concentration at the (M - 1)th time, on the basis of the stimulation action at the Mth time, increase the output current by one level, and return to the step of performing phrenic nerve stimulation with preset parameters on the user's diaphragmatic muscle according to the diaphragmatic muscle state;

[0052] If it is not greater than the first preset multiple of the blood oxygen concentration at the (M - 1)th time, on the basis of the stimulation action at the Mth time, decrease the output current by one level, and return to the step of performing phrenic nerve stimulation with preset parameters on the user's diaphragmatic muscle according to the diaphragmatic muscle state.

[0053] The present application provides a phrenic nerve stimulation device, which is applied to the detection field. The processor in the phrenic nerve stimulation device determines the state of the user's diaphragmatic muscle, controls the electrical stimulation module in the phrenic nerve stimulation device to generate a stimulation action on the abnormally - state diaphragmatic muscle of the user according to the diaphragmatic muscle state; determines whether the diaphragmatic muscle state of the user after the stimulation action is in a normal state; when the diaphragmatic muscle state after the stimulation action is in a normal state, maintain the stimulation action, and return to the step of determining the state of the user's diaphragmatic muscle; when the diaphragmatic muscle state after the stimulation action is not in a normal state, adjust the stimulation action, and return to the step of determining the state of the user's diaphragmatic muscle. By confirming the state of the user's diaphragmatic muscle and then performing corresponding stimulation actions on the abnormally - state diaphragmatic muscle, and at the same time determining whether the diaphragmatic muscle returns to the normal state after stimulation during the stimulation process, and adjusting the stimulation action in a timely manner according to the feedback of the diaphragmatic muscle state after stimulation, the possibility of causing harm to the user is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the prior art and the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0055] Figure 1 It is a schematic structural diagram of a phrenic nerve stimulation device provided by the present invention;

[0056] Figure 2 Flow chart of steps executed by a processor in a phrenic nerve stimulation device provided by the present invention;

[0057] Figure 3 Schematic structural diagram of another phrenic nerve stimulation device provided by the present invention;

[0058] Figure 4a Schematic structural diagram of an amplifier circuit of an electrical stimulation module provided by the present application;

[0059] Figure 4b Schematic structural diagram of a DAC adjustment module of an electrical stimulation module provided by the present application;

[0060] Figure 4c Schematic structural diagram of a feedback circuit of an electrical stimulation module provided by the present application;

[0061] Figure 4d Schematic structural diagram of a constant current source circuit and an RCD circuit of an electrical stimulation module provided by the present application. Detailed implementation manners

[0062] The core of the present invention is to provide a phrenic nerve stimulation device, which confirms the state of the user's diaphragm and then performs corresponding stimulation actions on the diaphragm in an abnormal state. At the same time, during the stimulation process, it determines whether the diaphragm returns to the normal state after stimulation, and adjusts the stimulation actions in a timely manner according to the feedback of the state of the diaphragm after stimulation, reducing the possibility of harm to the user.

[0063] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0064] Figure 1 Schematic structural diagram of a phrenic nerve stimulation device provided by the present invention; Figure 2 Flow chart of steps executed by a processor in a phrenic nerve stimulation device provided by the present invention;

[0065] The present invention provides a phrenic nerve stimulation device, including:

[0066] A memory 1 for storing computer programs;

[0067] A processor 2 for implementing the following steps when executing the computer program:

[0068] S21: Determine the user's diaphragm state, where the diaphragm state includes normal state, abnormal state of the left diaphragm, abnormal state of the right diaphragm, and abnormal state of both diaphragms;

[0069] The diaphragm is an important respiratory muscle in the body, accounting for 60% - 80% of the functions of all respiratory muscles. By electrically stimulating the phrenic nerve to cause the diaphragm to contract to achieve a ventilation effect, it can improve the diaphragm circulation, and has obvious effects on eliminating diaphragm fatigue, increasing diaphragm contractility, expanding the thoracic cavity volume, and increasing tidal volume.

[0070] Considering that when both diaphragms of the user are abnormal, the user's symptoms are more obvious, but when one side of the user's diaphragm is abnormal, due to the compensation of the healthy side diaphragm, the pulmonary ventilation volume decreases by about 20% and the symptoms are not obvious. Therefore, before using the phrenic nerve stimulation device to stimulate the user's phrenic nerve, the user's diaphragm state is determined in advance, so as to subsequently stimulate the user's diaphragm according to the user's diaphragm state.

[0071] S22: Control the electrical stimulation module 5 in the phrenic nerve stimulation device to generate a stimulation action on the diaphragm with abnormal state of the user according to the diaphragm state;

[0072] In the prior art, the phrenic nerve stimulation device stimulates both phrenic nerves of the user, but cannot perform targeted stimulation actions according to the different states of the user's bilateral phrenic nerves. In this application, after determining the user's diaphragm state, a stimulation action is generated on the diaphragm with abnormal state of the user, and targeted stimulation is performed, so that the user's diaphragm can be better adjusted.

[0073] S23: Determine whether the diaphragm state of the user after the stimulation action is in a normal state; if so, go to step S24; if not, go to step S25;

[0074] In the prior art, when the processor 2 in the phrenic nerve stimulation device controls the electrical stimulation module 5 in the phrenic nerve stimulation device to generate a stimulation action on the user's phrenic nerve, it often cannot master the accuracy of the stimulation action, resulting in over - stimulation of the user's phrenic nerve and unable to improve the user's diaphragm state.

[0075] In this application, after performing a stimulation action on the user, it is determined again whether the user's diaphragm state has returned to the normal state, and subsequent operations are performed according to the user's diaphragm state after the stimulation action.

[0076] S24: Maintain the stimulation action and return to the step of determining the user's diaphragm state;

[0077] If the diaphragm state of the user after the stimulation action returns to normal, it means that the current stimulation action is appropriate. Maintain the current stimulation action and at the same time return to the step of determining the user's diaphragm state to continue detecting the user's diaphragm state.

[0078] S25: Adjust the stimulation action and return to the step of determining the user's diaphragm state.

[0079] If the user's diaphragm condition still does not return to normal after the stimulation action, the current stimulation action is marked as inappropriate and needs to be adjusted, then the process returns to the step of determining the user's diaphragm condition to continue detecting the user's diaphragm condition. During the process of adjusting the stimulation action, the stimulation action is continuously changed in a direction that can promote the user's diaphragm condition to return from an abnormal state to a normal state.

[0080] In summary, the present application provides a phrenic nerve stimulation device, which is applied to the detection field. The processor 2 in the phrenic nerve stimulation device determines the diaphragm state of the user, and controls the electrical stimulation module 5 in the phrenic nerve stimulation device according to the diaphragm state to produce a stimulation action on the abnormal diaphragm of the user; judges whether the diaphragm state of the user is in a normal state after the stimulation action; when the diaphragm state after the stimulation action is in a normal state, maintains the stimulation action, and returns to the step of determining the diaphragm state of the user; when the diaphragm state after the stimulation action is not in a normal state, adjusts the stimulation action, and returns to the step of determining the diaphragm state of the user. Confirm the diaphragm state of the user and then perform corresponding stimulation actions on the diaphragm in the abnormal state. At the same time, determine whether the diaphragm after stimulation has returned to a normal state during the stimulation process. According to the feedback of the diaphragm state after stimulation, adjust the stimulation action in time to reduce the possibility of causing harm to the user.

[0081] Based on the above embodiments:

[0082] Figure 3 This is a structural schematic diagram of another phrenic nerve stimulation device provided by the present invention; the phrenic nerve stimulation device provided in this application is provided with a power module 3, which supplies power to the entire device and adopts 220V AC power supply. The power module 3 has a built-in lithium battery and can also be powered by a battery, which is not limited here.

[0083] As a preferred embodiment, determining the user's diaphragm status includes:

[0084] Receive the left diaphragm movement distance and the right diaphragm movement distance of the user in N breathing cycles sent by the diaphragm detection module 4 in the phrenic nerve stimulation device, where N is an integer greater than 1;

[0085] The initial left diaphragm movement distance was obtained by taking the average value of N left diaphragm movement distances;

[0086] An initial right diaphragm movement distance is obtained by averaging N right diaphragm movement distances; and a user's diaphragm state is determined based on the initial left diaphragm movement distance and the initial right diaphragm movement distance.

[0087] Considering that the user's state is not obvious when there is an abnormality in one-sided diaphragm, the diaphragm state of the user can only be obtained from the movement distance of the diaphragm during breathing. Since there may be errors in the movement distance of the user's diaphragm during one breathing cycle. This application obtains N breathing cycles, respectively obtains the left diaphragm movement distance N times and the right diaphragm movement distance N times, takes the average value of the N obtained data, and obtains the initial left diaphragm movement distance and the initial right diaphragm movement distance, so as to subsequently determine the user's diaphragm state according to the initial left diaphragm movement distance and the initial right diaphragm movement distance.

[0088] Specifically, the diaphragm detection module 4 detects the movement of the user's diaphragm through an ultrasonic probe.

[0089] The initial left diaphragm movement distance and the initial right diaphragm movement distance are obtained by taking the average value of the movement distances of both sides of the diaphragm of the user in N breathing cycles through the diaphragm detection module 4.

[0090] It should be noted that the inspiratory time can also be obtained according to the diaphragm movement state, and then the time of the stimulation action is controlled to be about 30% of the inspiratory time. At this time, the stimulation action is more in line with the human electromyogram characteristics and can achieve better results.

[0091] As a preferred embodiment, determining the user's diaphragm state according to the initial left diaphragm movement distance and the initial right diaphragm movement distance includes:

[0092] If both the initial left diaphragm movement distance and the initial right diaphragm movement distance are within the normal movement distance range and the movement directions are the same, it is determined that the user's diaphragm state is normal;

[0093] If the initial left diaphragm movement distance is not within the normal movement distance range and the initial right diaphragm movement distance is within the normal movement distance range, it is determined that the user's diaphragm state is an abnormal state of the left diaphragm;

[0094] If the initial left diaphragm movement distance is within the normal movement distance range and the initial right diaphragm movement distance is not within the normal movement distance range, it is determined that the user's diaphragm state is an abnormal state of the right diaphragm;

[0095] If both the initial left diaphragm movement distance and the initial right diaphragm movement distance are not within the normal movement distance range, it is determined that the user's diaphragm state is a bilateral diaphragm abnormal state.

[0096] Considering that when the diaphragm is in a normal state, the movement directions of both sides of the diaphragm are the same, and the movement distances of both sides of the diaphragm are within the normal movement distance range. When the movement distances of both sides of the diaphragm are not within the normal movement distance range, it is determined that the user's diaphragm state is a bilateral diaphragm abnormal state; when only one side of the diaphragm among both sides of the diaphragm is not within the normal movement distance range, it is determined that the user is in a unilateral diaphragm abnormal state.

[0097] It should be noted that the normal movement distance range is generally 6 - 8 cm.

[0098] Determine the user's diaphragm state based on the bilateral diaphragm movement distance, bilateral diaphragm movement direction, and the normal movement distance range, and then perform subsequent stimulation actions according to the user's diaphragm state.

[0099] As a preferred embodiment, control the electrical stimulation module 5 in the phrenic nerve stimulation device to generate a stimulation action on the abnormally - state diaphragm of the user according to the diaphragm state, including:

[0100] When the user's diaphragm state is a bilateral diaphragm abnormal state, control the electrical stimulation module 5 in the phrenic nerve stimulation device to generate a stimulation action on the left and right diaphragms of the user simultaneously;

[0101] When the user's diaphragm state is a left - side diaphragm abnormal state, control the electrical stimulation module 5 in the phrenic nerve stimulation device to generate a stimulation action on the left diaphragm of the user;

[0102] When the user's diaphragm state is a right - side diaphragm abnormal state, control the electrical stimulation module 5 in the phrenic nerve stimulation device to generate a stimulation action on the right diaphragm of the user.

[0103] Considering that stimulating the abnormally - state diaphragm can promote diaphragm contraction movement, improve ventilation, etc., the abnormally - state diaphragm can return to the normal state after using an appropriate stimulation action. In this application, a stimulation action is performed on the abnormally - state diaphragm of the user. When both bilateral diaphragm states are abnormal, the bilateral diaphragms are stimulated simultaneously. When a unilateral diaphragm state is abnormal, the abnormally - state diaphragm is stimulated.

[0104] By stimulating the abnormally - state diaphragm of the user, the user's diaphragm can return to the normal state after stimulation.

[0105] As a preferred embodiment, control the electrical stimulation module 5 in the phrenic nerve stimulation device to generate a stimulation action on the abnormally - state diaphragm of the user according to the diaphragm state, including:

[0106] Control the electrical stimulation module 5 in the phrenic nerve stimulation device and the electrode patches arranged on the user to generate a stimulation action on the abnormally - state diaphragm of the user;

[0107] The phrenic nerve stimulation device further includes an electrode - patch detection module 6 and a display module 7;

[0108] The electrode - patch detection module 6 is used to detect whether the electrode patches are detached; the display module 7 is used to display electrode - patch detachment information, the current diaphragm movement distance, and the parameters of the stimulation action;

[0109] The steps further include:

[0110] When receiving the electrode patch detachment signal sent by the electrode patch detection module 6, control the display module 7 to display that the electrode patch has detached.

[0111] During the stimulation process, the electrode patch is pre-pasted on the user, and the phrenic nerve of the user is stimulated through the electrode patch. If the electrode patch detaches during the stimulation process, it will affect the stimulation effect, and even electric injury may occur when the electrode patch is in poor contact with the user. To prevent excessive stimulation intensity when re-pasting after detachment, once detachment occurs, it is necessary to control the display module 7 to display that the current electrode patch has detached, so that the user can master the pasting situation of the electrode patch.

[0112] In addition, when detecting that the electrode patch has detached, the current stimulation should be stopped. After the electrode patch returns to normal pasting, the stimulation action continues. The display module 7 displays the pasting situation of the electrode patch through the liquid crystal screen, and at the same time, it also displays the parameters of the stimulation action. The parameters of the stimulation action include parameters such as the frequency, pulse width, and time of the electrical stimulation, and no more limitations are made here. The electrical stimulation module 5 outputs an electrical stimulation signal with adjustable frequency, pulse width, and time according to the instruction of the processor 2.

[0113] Detect the pasting state of the electrode patch through the electrode patch detection module 6 to prevent the electrode patch from detaching and affecting the stimulation effect.

[0114] Specifically, the electrode patch detection module 6 provided in this application mainly completes the detection through an optocoupler. When the electrode patch is pasted on the user, the signal forms a loop with the human body. At this time, the optocoupler is turned on, and the electrode patch detection module 6 detects that the electrode patch is pasted normally; when the electrode patch detaches, the optocoupler cannot be turned on, and the electrode patch detection module 6 detects that the electrode patch has detached at this time.

[0115] Figure 4a Schematic diagram of the structure of the amplification circuit of the electrical stimulation module 5 provided in this application; Figure 4b Schematic diagram of the structure of the DAC adjustment module of the electrical stimulation module 5 provided in this application; Figure 4c Schematic diagram of the structure of the feedback circuit of the electrical stimulation module 5 provided in this application; Figure 4d Schematic diagram of the structure of the constant current source circuit and the RCD circuit of the electrical stimulation module 5 provided in this application;

[0116] The electrical stimulation module 5 provided in this application is composed of an amplification circuit, a DAC adjustment module, a feedback circuit, a constant current source circuit, and an RCD circuit.

[0117] DP_PWM is the PWM signal controlled by the processor 2 and is used to generate an electrical stimulation waveform. U1A is an operational amplifier chip and together with R1, R3, C6, and C11 constitutes an amplification circuit. The DP_PWM signal is amplified by about 3 times by the subsystem and becomes the signal IN.

[0118] The DAC adjustment module consists of U7. U7 is a TLC7528 chip responsible for controlling the intensity of the output electrical stimulation and outputting a DAC signal. The signal IN is input as a reference voltage to the REFA pin of U7. The output signal is adjusted by controlling pins 6 - 16 of U7. DA_D0 - DA_D7 input the required DAC data. DA_A / B controls the output channel. DA_CS1 controls the chip select. DA_WR controls the read / write data. The output signal OUTA and RFBA form a feedback circuit through the operational amplifier chip U10A, C36, and C37, and finally the output signal RFBA is obtained.

[0119] The RFBA signal is input to the constant current source circuit formed by the operational amplifier chip U8B, R19, R22, and MOS transistor Q2 after calibrating the voltage through the potentiometer W2, to provide drive for the transformer T2.

[0120] The diode D7, resistors R17, R18, R20, R21, and capacitor C31 form a fixed RCD circuit. Its main function is to absorb spike pulses and play a role in adjusting the output waveform.

[0121] The 3rd and 4th pins of the transformer T2 output the electrical stimulation signals TRANS2_1 and TRANS2_2 to the electrode pads to form a loop with the human body to generate electrical stimulation.

[0122] As a preferred embodiment, before determining the user's diaphragmatic state, it further includes:

[0123] Receiving the initial blood oxygen concentration of the user sent by the blood oxygen detection module 8 in the phrenic nerve stimulation device;

[0124] Controlling the display module 7 to display the blood oxygen concentration information output by the blood oxygen detection module 8

[0125] After the diaphragmatic state is in a normal state after the stimulation action, it further includes:

[0126] Receiving the current blood oxygen concentration of the user sent by the blood oxygen detection module 8 in the phrenic nerve stimulation device;

[0127] Determining whether the current blood oxygen concentration is not less than the first preset multiple of the initial blood oxygen concentration;

[0128] If so, enter the adjustment of the stimulation action and return to the step of determining the user's diaphragmatic state;

[0129] If not, enter the adjustment of the stimulation action and return to the step of determining the user's diaphragmatic state.

[0130] Considering that the blood sample concentration is an information reflecting muscle fatigue, the respiratory effect of the current user can be determined according to the blood oxygen concentration. The phrenic nerve stimulation device provided by this application collects the blood oxygen concentration of the user throughout the whole process of use. After the diaphragmatic movement state of the user returns to normal, the current blood oxygen concentration of the user is judged against the value of the initial blood sample concentration. When the current blood oxygen concentration is not less than the first preset multiple of the initial blood oxygen concentration, it proves that the current stimulation action has improved the respiratory effect of the user, and the current stimulation action can be maintained. If it is less, the current stimulation action needs to be further adjusted.

[0131] Specifically, the blood oxygen concentration of a normal person is 90%. If the blood oxygen concentration is lower than 90% for a long time, it will have an adverse effect. The first preset multiple is 5%. When the change between the current blood oxygen concentration and the initial blood oxygen concentration is greater than 5%, it indicates that the current stimulation action has improved the respiratory effect of the user.

[0132] It should be noted that the blood oxygen detection module 8 uses photoelectric detection to detect the blood oxygen concentration. After the blood oxygen detection module detects the blood oxygen concentration, the display module will display the current blood oxygen concentration.

[0133] The blood oxygen of the user is detected by the blood oxygen detection module 8, and whether the current stimulation action is appropriate is determined from two aspects: the blood oxygen concentration of the user and the diaphragmatic movement distance, so as to make adjustments later.

[0134] As a preferred embodiment, the stimulation action includes outputting current to the phrenic nerve of the user, and the output current includes a preset number of levels;

[0135] When the number of times of phrenic nerve stimulation currently is M times, where M is an integer greater than 1, when the diaphragmatic state after the stimulation action is not in the normal state, the stimulation action is adjusted, and the step of determining the diaphragmatic state of the user is returned, including:

[0136] Judging whether the Mth left diaphragmatic movement distance and / or the Mth right diaphragmatic movement distance is less than the second preset multiple of the initial left diaphragmatic movement distance and / or the initial right diaphragmatic movement distance;

[0137] If it is less than the second preset multiple of the initial left diaphragmatic movement distance and / or the initial right diaphragmatic movement distance, then judge whether the Mth left diaphragmatic movement distance and / or the Mth right diaphragmatic movement distance is greater than the third preset multiple of the (M - 1)th left diaphragmatic movement distance and / or the (M - 1)th right diaphragmatic movement distance; the third preset multiple is less than the second preset multiple;

[0138] If it is not greater than the third preset multiple of the (M - 1)th left diaphragmatic movement distance and / or the (M - 1)th right diaphragmatic movement distance, then enhance the output current by one level on the basis of the Mth stimulation action, and return to the step of determining the diaphragmatic state of the user.

[0139] Considering that when the current diaphragmatic movement distance is less than the second preset multiple of the initial diaphragmatic movement distance, it is proved that the current stimulation has little effect on the diaphragm. Therefore, when the diaphragm is stimulated for the Mth time, if the Mth left diaphragmatic movement distance and / or the Mth right diaphragmatic movement distance is less than the second preset multiple of the initial left diaphragmatic movement distance and / or the initial right diaphragmatic movement distance, the Mth diaphragmatic movement distance is compared with the (M - 1)th diaphragmatic movement distance. If it is not greater than the third preset multiple of the (M - 1)th left diaphragmatic movement distance and / or the (M - 1)th right diaphragmatic movement distance, the current stimulation action is insufficient, and one more level needs to be added on the basis of the Mth stimulation action, and the step of determining the user's diaphragmatic state is returned until the user's diaphragmatic state returns to normal.

[0140] Specifically, when both the left and right diaphragms are in an abnormal state, the average of the current left diaphragmatic movement distance and the current right diaphragmatic movement distance can also be used as the current diaphragmatic movement distance, and the average of the initial left diaphragmatic movement distance and the initial right diaphragmatic movement distance can be used as the initial diaphragmatic movement distance for subsequent comparison and calculation.

[0141] Further, the second preset multiple is 150%, and the third preset multiple is 110%. When the Mth diaphragmatic movement distance is not greater than 150% of the initial movement distance, it is judged whether the Mth diaphragmatic movement distance is greater than 110% of the (M - 1)th diaphragmatic movement distance. When the Mth diaphragmatic movement distance is not greater than 110% of the (M - 1)th diaphragmatic movement distance, an additional level of electrical stimulation is required. The processor 2 outputs a signal to the electrical stimulation module 5, and the DAC adjustment module makes adjustments and outputs.

[0142] By determining the second preset multiple of the current (i.e., the Mth) diaphragmatic movement distance and the initial diaphragmatic movement distance and comparing it with the third preset multiple of the (M - 1)th diaphragmatic movement distance, and then adjusting the subsequent stimulation action, it is more accurate.

[0143] As a preferred embodiment, after judging whether the Mth left diaphragmatic movement distance and / or the Mth right diaphragmatic movement distance is greater than the third preset multiple of the (M - 1)th left diaphragmatic movement distance and / or the (M - 1)th right diaphragmatic movement distance, it further includes:

[0144] If it is greater than the third preset multiple of the (M - 1)th left diaphragmatic movement distance and / or the (M - 1)th right diaphragmatic movement distance, the stimulation action is maintained, and the step of determining the user's diaphragmatic state is returned.

[0145] When the Mth diaphragmatic movement distance is greater than the third preset multiple of the (M - 1)th diaphragmatic movement distance, it proves that the current stimulation plays a certain role and there is no need to change. The current stimulation action is continued to be maintained, and the user's diaphragmatic state is continuously monitored.

[0146] Specifically, when the diaphragmatic movement distance in the Mth time is greater than 110% of that in the (M - 1)th time, it proves that the current stimulation action has a certain effect and needs to be continued to be maintained.

[0147] By determining the second preset multiple of the diaphragmatic movement distance in the current Mth time and the initial diaphragmatic movement distance and comparing it with the third preset multiple of the diaphragmatic movement distance in the (M - 1)th time, and then adjusting the subsequent stimulation action, it is more accurate.

[0148] As a preferred embodiment, after determining whether the diaphragmatic movement distance on the left side in the Mth time and / or the diaphragmatic movement distance on the right side in the Mth time is less than the second preset multiple of the initial diaphragmatic movement distance on the left side and / or the initial diaphragmatic movement distance on the right side, it further includes:

[0149] If it is not less than the second preset multiple of the initial diaphragmatic movement distance on the left side and / or the initial diaphragmatic movement distance on the right side, then determine whether the diaphragmatic movement distance on the left side in the Mth time and / or the diaphragmatic movement distance on the right side in the Mth time is less than the third preset multiple of the diaphragmatic movement distance on the left side in the (M - 1)th time and / or the diaphragmatic movement distance on the right side in the (M - 1)th time; the third preset multiple is less than the second preset multiple.

[0150] If it is less than the third preset multiple of the diaphragmatic movement distance on the left side in the (M - 1)th time and / or the diaphragmatic movement distance on the right side in the (M - 1)th time, adjust the current within the range of the current output current level and return to the step of determining the diaphragmatic state of the user.

[0151] Considering that when the diaphragmatic movement distance on the left side in the Mth time and / or the diaphragmatic movement distance on the right side in the Mth time is not less than the second preset multiple of the initial diaphragmatic movement distance on the left side and / or the initial diaphragmatic movement distance on the right side, it proves that the current stimulation action has a greater impact on diaphragmatic movement. Then determine whether the diaphragmatic movement distance on the left side in the Mth time and / or the diaphragmatic movement distance on the right side in the Mth time is less than the third preset multiple of the diaphragmatic movement distance on the left side in the (M - 1)th time and / or the diaphragmatic movement distance on the right side in the (M - 1)th time. When the diaphragmatic movement distance on the left side in the Mth time and / or the diaphragmatic movement distance on the right side in the Mth time is less than the third preset multiple of the diaphragmatic movement distance on the left side in the (M - 1)th time and / or the diaphragmatic movement distance on the right side in the (M - 1)th time, it proves that the current stimulation action has a certain effect, and the current can be finely adjusted, but the current level does not need to be adjusted.

[0152] Specifically, the signal output by the processor 2 is used to control the DAC circuit to adjust the current.

[0153] By determining the second preset multiple of the diaphragmatic movement distance in the current Mth time and the initial diaphragmatic movement distance and comparing it with the third preset multiple of the diaphragmatic movement distance in the (M - 1)th time, and then adjusting the subsequent stimulation action, it is more accurate.

[0154] As a preferred embodiment, it is determined whether the movement distance of the left diaphragm at the Mth time and / or the movement distance of the right diaphragm at the Mth time is less than a third preset multiple of the movement distance of the left diaphragm at the (M - 1)th time and / or the movement distance of the right diaphragm at the (M - 1)th time; after the third preset multiple is less than the second preset multiple, it further includes:

[0155] If it is not less than the third preset multiple of the movement distance of the left diaphragm at the (M - 1)th time and / or the movement distance of the right diaphragm at the (M - 1)th time, it is determined whether the blood oxygen concentration at the Mth time is greater than a first preset multiple of the blood oxygen concentration at the (M - 1)th time;

[0156] If it is greater than the first preset multiple of the blood oxygen concentration at the (M - 1)th time, on the basis of the stimulation action at the Mth time, increase the first - level output current by one level, and return to the step of performing phrenic nerve stimulation with preset parameters on the user's diaphragm according to the diaphragm state;

[0157] If it is not greater than the first preset multiple of the blood oxygen concentration at the (M - 1)th time, on the basis of the stimulation action at the Mth time, decrease the first - level output current by one level, and return to the step of performing phrenic nerve stimulation with preset parameters on the user's diaphragm according to the diaphragm state.

[0158] When the movement distance of the left diaphragm at the Mth time and / or the movement distance of the right diaphragm at the Mth time is not less than the third preset multiple of the movement distance of the left diaphragm at the (M - 1)th time and / or the movement distance of the right diaphragm at the (M - 1)th time, at this time, the stimulation has a greater impact on the diaphragm movement, and continuous stimulation requires introducing the blood oxygen concentration for joint judgment. Adjust the subsequent stimulation actions according to the rise or fall of the blood oxygen concentration. When the blood oxygen concentration does not decrease, the current diaphragm state can still improve the breathing effect through stimulation, so increase the first - level output current on the basis of the stimulation action at the Mth time to increase the stimulation and make the diaphragm movement distance increase; when the blood oxygen concentration decreases, the diaphragm may be fatigued, so decrease the first - level output current on the basis of the stimulation action at the Mth time to reduce the stimulation.

[0159] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts among the various embodiments can be referred to each other. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the description of the method part.

[0160] It should also be noted that in this specification, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0161] The foregoing description of the disclosed embodiments enables those skilled in the art to practice or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A phrenic nerve stimulation device, characterized in that, Comprising: A memory for storing a computer program; A processor for implementing the following steps when executing the computer program: Determine the user's diaphragmatic muscle state, where the diaphragmatic muscle state includes a normal state, a left diaphragmatic muscle abnormal state, a right diaphragmatic muscle abnormal state, and a bilateral diaphragmatic muscle abnormal state; Control the electrical stimulation module in the phrenic nerve stimulation device to generate a stimulation action on the diaphragmatic muscle with abnormal state of the user according to the diaphragmatic muscle state; Judge whether the diaphragmatic muscle state of the user after the stimulation action is in the normal state; When the diaphragmatic muscle state after the stimulation action is in the normal state, maintain the stimulation action and return to the step of determining the user's diaphragmatic muscle state; When the diaphragmatic muscle state after the stimulation action is not in the normal state, adjust the stimulation action and return to the step of determining the user's diaphragmatic muscle state; Before determining the user's diaphragmatic muscle state, it further includes: Receive the initial blood oxygen concentration of the user sent by the blood oxygen detection module in the phrenic nerve stimulation device; Control the display module to display the blood oxygen concentration information output by the blood oxygen detection module; After the diaphragmatic muscle state after the stimulation action is in the normal state, it further includes: Receive the current blood oxygen concentration of the user sent by the blood oxygen detection module in the phrenic nerve stimulation device; Determine whether the current blood oxygen concentration is not less than a first preset multiple of the initial blood oxygen concentration; If so, maintain the stimulation action and return to the step of determining the user's diaphragmatic muscle state; If not, enter the step of adjusting the stimulation action and return to the step of determining the user's diaphragmatic muscle state; The stimulation action includes outputting current to the user's phrenic nerve, and the output current includes a preset number of levels; When the current number of times of phrenic nerve stimulation is M times, where M is an integer greater than 1, when the diaphragmatic muscle state after the stimulation action is not in the normal state, adjusting the stimulation action and returning to the step of determining the user's diaphragmatic muscle state includes: Judge whether the left diaphragmatic muscle movement distance at the Mth time and / or the right diaphragmatic muscle movement distance at the Mth time is less than a second preset multiple of the initial left diaphragmatic muscle movement distance and / or the initial right diaphragmatic muscle movement distance; If it is less than the second preset multiple of the initial left diaphragmatic muscle movement distance and / or the initial right diaphragmatic muscle movement distance, then judge whether the left diaphragmatic muscle movement distance at the Mth time and / or the right diaphragmatic muscle movement distance at the Mth time is greater than a third preset multiple of the left diaphragmatic muscle movement distance and / or the right diaphragmatic muscle movement distance at the (M - 1)th time; the third preset multiple is less than the second preset multiple; If it is not greater than the third preset multiple of the left diaphragmatic muscle movement distance and / or the right diaphragmatic muscle movement distance at the (M - 1)th time, then enhance one level of the output current on the basis of the stimulation action at the Mth time and return to the step of determining the user's diaphragmatic muscle state.

2. The phrenic nerve stimulation device according to claim 1, characterized in that, Determining the user's diaphragmatic muscle state includes: Receive the left diaphragmatic muscle movement distance and the right diaphragmatic muscle movement distance of the user in N breathing cycles sent by the diaphragmatic muscle detection module in the phrenic nerve stimulation device, where N is an integer greater than 1; Take the average value of the left diaphragmatic muscle movement distances for N times to obtain the initial left diaphragmatic muscle movement distance; The average value of the right diaphragmatic muscle movement distance for N times is taken to obtain the initial right diaphragmatic muscle movement distance; the diaphragmatic muscle state of the user is determined according to the initial left diaphragmatic muscle movement distance and the initial right diaphragmatic muscle movement distance.

3. The phrenic nerve stimulation device according to claim 2, characterized in that, Determining the diaphragmatic muscle state of the user according to the initial left diaphragmatic muscle movement distance and the initial right diaphragmatic muscle movement distance includes: If both the initial left diaphragmatic muscle movement distance and the initial right diaphragmatic muscle movement distance are within the normal movement distance range and have the same movement direction, it is determined that the diaphragmatic muscle state of the user is a normal state; If the initial left diaphragmatic muscle movement distance is not within the normal movement distance range and the initial right diaphragmatic muscle movement distance is within the normal movement distance range, it is determined that the diaphragmatic muscle state of the user is an abnormal state of the left diaphragmatic muscle; If the initial left diaphragmatic muscle movement distance is within the normal movement distance range and the initial right diaphragmatic muscle movement distance is not within the normal movement distance range, it is determined that the diaphragmatic muscle state of the user is an abnormal state of the right diaphragmatic muscle; If both the initial left diaphragmatic muscle movement distance and the initial right diaphragmatic muscle movement distance are not within the normal movement distance range, it is determined that the diaphragmatic muscle state of the user is an abnormal state of both diaphragmatic muscles.

4. The phrenic nerve stimulation device according to claim 1, characterized in that, Controlling the electrical stimulation module in the phrenic nerve stimulation device to generate a stimulation action on the diaphragmatic muscle with abnormal state of the user according to the diaphragmatic muscle state includes: When the diaphragmatic muscle state of the user is an abnormal state of both diaphragmatic muscles, controlling the electrical stimulation module in the phrenic nerve stimulation device to generate a stimulation action on the left diaphragmatic muscle and the right diaphragmatic muscle of the user simultaneously; When the diaphragmatic muscle state of the user is an abnormal state of the left diaphragmatic muscle, controlling the electrical stimulation module in the phrenic nerve stimulation device to generate a stimulation action on the left diaphragmatic muscle of the user; When the diaphragmatic muscle state of the user is an abnormal state of the right diaphragmatic muscle, controlling the electrical stimulation module in the phrenic nerve stimulation device to generate a stimulation action on the right diaphragmatic muscle of the user.

5. The phrenic nerve stimulation device according to claim 1, characterized in that, Controlling the electrical stimulation module in the phrenic nerve stimulation device to generate a stimulation action on the diaphragmatic muscle with abnormal state of the user according to the diaphragmatic muscle state includes: Controlling the electrical stimulation module in the phrenic nerve stimulation device and the electrode patches arranged on the user to generate a stimulation action on the diaphragmatic muscle with abnormal state of the user according to the diaphragmatic muscle state; The phrenic nerve stimulation device further includes an electrode patch detection module and a display module; The electrode patch detection module is used to detect whether the electrode patches are detached; the display module is used to display the electrode patch detachment information, the current diaphragmatic muscle movement distance, and the parameters of the stimulation action; The step further includes: When receiving the electrode patch detachment signal sent by the electrode patch detection module, controlling the display module to display the detachment of the electrode patches.

6. The phrenic nerve stimulation device according to claim 1, wherein, After determining whether the Mth left diaphragmatic muscle movement distance and / or the Mth right diaphragmatic muscle movement distance is greater than three times the (M - 1)th left diaphragmatic muscle movement distance and / or the (M - 1)th right diaphragmatic muscle movement distance, it further includes: If it is greater than three times the (M - 1)th left diaphragmatic muscle movement distance and / or the (M - 1)th right diaphragmatic muscle movement distance, maintaining the stimulation action and returning to the step of determining the diaphragmatic muscle state of the user.

7. The phrenic nerve stimulation device according to claim 1, wherein, After determining whether the M-th left diaphragmatic muscle movement distance and / or the M-th right diaphragmatic muscle movement distance is less than a second preset multiple of the initial left diaphragmatic muscle movement distance and / or the initial right diaphragmatic muscle movement distance, it further includes: If it is not less than the second preset multiple of the initial left diaphragmatic muscle movement distance and / or the initial right diaphragmatic muscle movement distance, then determine whether the M-th left diaphragmatic muscle movement distance and / or the M-th right diaphragmatic muscle movement distance is less than a third preset multiple of the (M - 1)-th left diaphragmatic muscle movement distance and / or the (M - 1)-th right diaphragmatic muscle movement distance; the third preset multiple is less than the second preset multiple; If it is less than the third preset multiple of the (M - 1)-th left diaphragmatic muscle movement distance and / or the (M - 1)-th right diaphragmatic muscle movement distance, adjust the current within the range of the current output level, and return to the step of determining the user's diaphragmatic muscle state.

8. The phrenic nerve stimulation device according to claim 7, wherein, After determining whether the M-th left diaphragmatic muscle movement distance and / or the M-th right diaphragmatic muscle movement distance is less than a third preset multiple of the (M - 1)-th left diaphragmatic muscle movement distance and / or the (M - 1)-th right diaphragmatic muscle movement distance; the third preset multiple is less than the second preset multiple, it further includes: If it is not less than the third preset multiple of the (M - 1)-th left diaphragmatic muscle movement distance and / or the (M - 1)-th right diaphragmatic muscle movement distance, then determine whether the M-th blood oxygen concentration is greater than a first preset multiple of the (M - 1)-th blood oxygen concentration; If it is greater than the first preset multiple of the (M - 1)-th blood oxygen concentration, enhance the output current by one level on the basis of the M-th stimulation action, and return to the step of performing phrenic nerve stimulation with preset parameters on the user's diaphragmatic muscle according to the diaphragmatic muscle state; If it is not greater than the first preset multiple of the (M - 1)-th blood oxygen concentration, weaken the output current by one level on the basis of the M-th stimulation action, and return to the step of performing phrenic nerve stimulation with preset parameters on the user's diaphragmatic muscle according to the diaphragmatic muscle state.

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