CN219375888U - Wearable device and nerve stimulation system - Google Patents
Wearable device and nerve stimulation system Download PDFInfo
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- CN219375888U CN219375888U CN202320102685.5U CN202320102685U CN219375888U CN 219375888 U CN219375888 U CN 219375888U CN 202320102685 U CN202320102685 U CN 202320102685U CN 219375888 U CN219375888 U CN 219375888U
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Abstract
The present utility model provides a wearable device and a neural stimulation system, the wearable device comprising: the cloth cover is used for being worn on a human body; the transmitting coils are used for transmitting wireless electric energy and are arranged on the cloth cover, and the transmitting coils are provided with a plurality of transmitting coils, wherein the axes of at least two transmitting coils are arranged in an included angle; and a plurality of driving circuits, each of which is connected to each of the transmitting coils, respectively. The nerve stimulation system comprises an external machine and an implant body, wherein the external machine adopts the wearable device. The wearable device and the nerve stimulation system are convenient and safe to use.
Description
Technical Field
The utility model relates to the technical field of medical equipment, in particular to wearable equipment and a nerve stimulation system.
Background
Neuromodulation is a novel therapeutic modality for treating various diseases caused by abnormal nerve signal transmission by blocking abnormal nerve signal transmission through current stimulation nerves, such as chronic postoperative pain, parkinson's disease, epilepsy, overactive bladder, etc. Existing stimulation treatment methods can be divided into percutaneous stimulation and implantable stimulation. The percutaneous stimulation mode has poor effect and long treatment time. Implantable stimulators are effective but have large surgical trauma with multiple complications risks. The miniaturized implantable stimulator can realize minimally invasive implantation, greatly reduces risks of operation and complications, and is an important development direction of nerve stimulation treatment technology. Miniaturized implantable stimulation systems generally include an external machine and an implant, the external machine providing power to the implant in a wireless transmission manner, thereby reducing the volume of the implant and reducing surgical trauma.
The energy supply efficiency of the existing nerve stimulation system is low, larger transmitting power is needed, and health risks are easily caused. In addition, in order to obtain higher transmission efficiency, the patient is required to accurately align the external machine with the implant body, and the use is inconvenient.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, an object of the present utility model is to provide a wearable device and a neurostimulation system, which can achieve a therapeutic effect with less transmit power and are safer to use.
To achieve the above and other related objects, the present utility model provides a wearable device comprising:
the cloth cover is used for being worn on a human body;
the plurality of transmitting coils are used for transmitting wireless electric energy and are arranged on the cloth sleeve, the plurality of transmitting coils are arranged, and the axes of at least two transmitting coils are arranged in an included angle;
and a plurality of driving circuits, each of which is connected to each of the transmitting coils, respectively.
In one embodiment of the present utility model, the number of the transmitting coils is 3 to 12.
In one embodiment of the utility model, the transmitting coil is wound in a planar configuration.
In one embodiment of the present utility model, the transmitting coil is wound in a rectangular structure, the rectangular structure has a long side and a short side, and the long sides of two adjacent rectangular structures are adjacent to each other.
In an embodiment of the utility model, the wearable device further comprises a velcro attached to the cloth cover, the velcro being used for fixing the cloth cover to a human body.
In an embodiment of the utility model, the wearable device further comprises a flexible PCB mounted to the cloth cover, the transmitting coil being fixed to the flexible PCB.
In an embodiment of the present utility model, the wearable device further includes a digital signal generating circuit and a radio frequency signal generating circuit, where the digital signal generating circuit is configured to generate a plurality of voltage adjustment signals, and the radio frequency signal generating circuit is configured to generate a downlink radio frequency signal;
each of the driving circuits includes:
the digital-to-analog converter is used for converting the voltage regulating signal into an analog direct-current voltage;
and the high-frequency power amplifier amplifies the downlink radio-frequency signal into radio-frequency driving voltage by using the analog direct-current voltage, and the radio-frequency driving voltage drives the transmitting coil to transmit radio energy.
In one embodiment of the utility model, the high frequency power amplifier is a class E amplifier.
To achieve the above and other related objects, the present utility model also provides a nerve stimulating system comprising an external machine and an implant, characterized in that the external machine employs the wearable device,
the implant comprises:
a receiving coil for receiving the radio energy and generating a first alternating current;
an ac-ac conversion circuit for converting the first ac power into a second ac power;
the nerve stimulating electrode group is coupled to the output end of the alternating current-alternating current conversion circuit and is used for stimulating nerves by using the second alternating current discharge.
In one embodiment of the utility model, the implant further comprises:
the sampling circuit is coupled to the alternating current-alternating current conversion circuit and is used for sampling the alternating current-alternating current conversion circuit to obtain a sampling signal, and the sampling signal comprises a voltage sampling signal and/or a current sampling signal;
the uplink modulation circuit is used for modulating the sampling signal into a radio frequency feedback signal;
and the impedance network comprises a first electronic switch and an impedance element, and the radio frequency feedback signal controls the first electronic switch to switch the impedance element on or off with the receiving coil.
As described above, the wearable device and the nerve stimulation system of the present utility model have the following beneficial effects: convenient and safe to use.
Drawings
Fig. 1 is a schematic structural view of an embodiment of a wearable device according to the present utility model in an unfolded state.
Fig. 2 is a schematic structural diagram of an embodiment of a wearable device according to the present utility model in a use state.
Fig. 3 shows a circuit block diagram of an embodiment of the wearable device of the present utility model.
Fig. 4 is a circuit block diagram of an embodiment of the driving circuit in fig. 3.
Fig. 5 is a circuit diagram showing an embodiment of the high frequency power amplifier in fig. 4.
Description of element reference numerals
1. A cloth cover; 2. a transmitting coil; 21. round corners; 3. a driving circuit; 4. a receiving coil; 5. and a battery.
Detailed Description
Other advantages and effects of the present utility model will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present utility model with reference to specific examples. The utility model may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present utility model. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict.
It should be noted that the illustrations provided in the following embodiments merely illustrate the basic concept of the present utility model by way of illustration, and only the components related to the present utility model are shown in the drawings and are not drawn according to the number, shape and size of the components in actual implementation, and the form, number and proportion of the components in actual implementation may be arbitrarily changed, and the layout of the components may be more complicated.
Referring to fig. 1 to 5, the present utility model provides a wearable device, which includes a cloth cover 1, a transmitting coil 2 and a driving circuit 3. The cloth cover 1 is used for being worn on a human body. The transmitting coils 2 are used for transmitting wireless electric energy and are arranged on the cloth cover 1, the transmitting coils 2 are arranged in a plurality, and the axes of at least two transmitting coils 2 are arranged at an included angle. The driving circuits are respectively connected to the transmitting coils.
The cloth cover 1 of the present utility model may be a flexible structure or a rigid structure. When the cloth cover 1 adopts a flexible structure, the cloth cover 1 has an unfolding state and a winding state when worn. For the cloth cover 1 with the flexible structure, the utility model only requires that the axes of at least two transmitting coils 2 in the winding state are arranged at an included angle, and the arrangement modes of the transmitting coils 2 in other states are not limited. The connection mode between the transmitting coil 2 and the cloth cover 1 can be selected in various ways, such as adhesion and fixation, sewing and binding, and placing the transmitting coil 2 in an interlayer of the cloth cover 1.
The utility model can make each transmitting coil 2 emit wireless electric energy with different intensity by providing each transmitting coil 2 with an independent driving circuit 3. The axial directions of the transmitting coils 2 are not consistent, so that the magnetic fields of the transmitting coils 2 can be converged at one position, and the total transmitting magnetic fields with more distribution states can be generated through the mutual superposition of the magnetic fields, so that the adaptability of the transmitting magnetic fields is enhanced, and the magnetic field coupling with the implant is better. Thereby reducing the transmit power of the wearable device while maintaining the implant stimulation power.
Too few transmit coils will reduce the adaptability of the transmit magnetic field and too many transmit coils will increase the cost of the wearable device. In order to achieve both transmission efficiency and cost, in one embodiment, the number of transmit coils is 3-12.
In order to increase the coverage of the transmitting magnetic field as much as possible under the condition that the number of the transmitting coils is limited, in one embodiment, each transmitting coil encloses a cylindrical structure, and the cross-sectional shape of the cylindrical structure is a regular polygon. The present embodiment requires only regular polygon arrangement of the transmitting coils 2 in a natural state, and also allows the cross-sectional shape of the tubular structure to transmit distortion when the cloth cover adopts a flexible structure.
In one embodiment, the transmitting coil 2 is wound into a planar structure, so that the cloth cover 1 is convenient to closely fit a human body.
In order to reduce the gap between two adjacent transmit coils 2 and at the same time reduce the deformation of the transmit coils 2 when worn, in one embodiment the transmit coils are wound in a rectangular configuration. To ensure the utilization rate of the wireless power, four corners of the rectangular structure are rounded corners 21.
In one embodiment, the rectangular structures have long sides and short sides, and the long sides of adjacent rectangular structures are adjacent to each other. The two adjacent rectangular structures can be closely adjacent to each other or partially overlapped. When the number of the transmitting coils 2 is large and the magnetic fields are collectively transmitted, it is advantageous to improve the concentration of the total magnetic field energy.
In an embodiment, the wearable device further comprises a magic tape fixed on the cloth cover, and when the cloth cover is fixed on a human body, the magic tape is used for tightening the cloth cover, and the fixing position of the transmitting coil can be kept unchanged through binding force, so that the transmission efficiency is more stable.
Specifically, in one embodiment, the wearable device further comprises a flexible PCB mounted to the cloth cover, the transmitting coil being secured to the flexible PCB. In this embodiment, the flexible PCB may be a conventional technology, and the transmitting coil may be completely embedded in the flexible PCB, or may be partially exposed on the surface of the flexible PCB. By fixing the transmitting coils by using the flexible PCB, the flexibility of the transmitting coils is ensured, and the relative position relation among the transmitting coils can be maintained, so that the transmission efficiency is more stable.
Specifically, in an embodiment, the wearable device further includes a digital signal generating circuit and a radio frequency signal generating circuit, where the digital signal generating circuit is configured to generate a plurality of voltage adjustment signals, and the radio frequency signal generating circuit is configured to generate a downlink radio frequency signal. Each driving circuit comprises a digital-to-analog converter and a high-frequency power amplifier, wherein the digital-to-analog converter is used for converting a voltage regulating signal into an analog direct-current voltage, and the high-frequency power amplifier is used for amplifying a downlink radio-frequency signal into a radio-frequency driving voltage by using the analog direct-current voltage, and the radio-frequency driving voltage drives a transmitting coil to transmit radio energy. The analog direct current voltage is used as the power supply voltage of the high-frequency power amplifier, a plurality of digital signals with different values are generated by the digital signal generating circuit to be used as voltage regulating signals, and the voltage regulating signals are converted into the analog direct current voltages with different values by the digital-to-analog converter to drive the corresponding transmitting coils 2, so that the plasticity of the transmitting magnetic field is enhanced. In this embodiment, the digital signal generating circuit may be implemented by using a memory, a programmable circuit, a microcontroller, or other existing technologies, which is not an improvement of this embodiment.
Referring to fig. 5, in one embodiment, the high frequency power amplifier is a class E amplifier. Specifically, the high-frequency power amplifier comprises a switch tube T1, wherein the switch tube T1 adopts an enhanced NMOS tube, the drain electrode of the switch tube T1 is connected with an analog direct-current voltage V_amp through a first resistor R1 and a high-frequency choke coil L1 which are sequentially connected, the source electrode of the switch tube T1 is grounded through a second resistor R2, and the grid electrode of the switch tube T1 is controlled by a digital signal generating circuit. The high frequency power amplifier further comprises a resonant network coupled to the transmitting coil, and the resonant network comprises a first capacitor C1, a second capacitor C2 and a second inductor L2. One end of the transmitting coil is grounded, and the other end of the transmitting coil is connected between L1 and R1 after passing through C2 and L2 which are mutually connected in series.
In an embodiment, the wearable device further comprises a battery 5 powering the respective drive circuits.
The utility model also provides a nerve stimulation system, which comprises an external machine and an implant, wherein the external machine adopts the wearable device of any embodiment. The implant comprises a receiving coil 4, an ac-ac conversion circuit and a set of nerve stimulating electrodes. The receiving coil is used for receiving wireless power and generating first alternating current. The alternating current-alternating current conversion circuit is used for converting the first alternating current into the second alternating current. The nerve stimulating electrode set is coupled to the output end of the AC-AC conversion circuit, and the nerve is stimulated by the second AC discharge.
In one embodiment, the implant further comprises a sampling circuit, an upstream modulation circuit, and an impedance network. The sampling circuit is coupled to the AC-AC conversion circuit and is used for sampling the AC-AC conversion circuit to obtain a sampling signal, wherein the sampling signal comprises a voltage sampling signal and/or a current sampling signal. The uplink modulation circuit is used for modulating the sampling signal into a radio frequency feedback signal. The impedance network comprises a first electronic switch and an impedance element, the radio frequency feedback signal controlling the first electronic switch to switch the impedance element on or off the receiving coil 4. The present embodiment changes the input impedance of the implant by coupling the impedance network with the receiving coil 4, and transmits the sampled signal to the external machine by a backscattering mechanism. The external machine can interact with the user through the display equipment and the input equipment, and can also adjust the sending power of each driving circuit among the controllers, so that the safety of the nerve stimulation system is further improved. In this embodiment, the external device further includes a communication module such as 5G and bluetooth, and the user can send a control signal to each driving circuit through a mobile terminal such as a mobile phone, so as to adjust the magnetic field power of each transmitting coil.
In the nerve stimulation system, the implant is a passive nerve stimulator, and can be implanted into the tissue around the tibial nerve through minimally invasive surgery. The wearable device of the external machine is worn on the ankle part of the patient during treatment to supply power for the implant. The nerve stimulation system is safer and convenient to use, has obvious treatment effect on patients with overactive bladder through the stimulation on tibial nerves, can effectively improve the bladder capacity of users, reduces the frequency of toilet use and improves the quality of life.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description. When technical features of different embodiments are embodied in the same drawing, the drawing can be regarded as a combination of the embodiments concerned also being disclosed at the same time.
The above embodiments are merely illustrative of the principles of the present utility model and its effectiveness, and are not intended to limit the utility model. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the utility model, and it is intended that the appended claims be interpreted as covering all equivalent modifications and variations as fall within the true spirit and scope of the utility model.
Claims (10)
1. Wearable equipment, its characterized in that includes:
the cloth cover is used for being worn on a human body;
the plurality of transmitting coils are used for transmitting wireless electric energy and are arranged on the cloth sleeve, the plurality of transmitting coils are arranged, and the axes of at least two transmitting coils are arranged in an included angle;
and a plurality of driving circuits, each of which is connected to each of the transmitting coils, respectively.
2. The wearable device according to claim 1, wherein the number of transmitting coils is 3-12.
3. The wearable device of claim 1, wherein the transmitting coil is wound in a planar configuration.
4. The wearable device of claim 1, wherein the transmitting coil is wound in a rectangular structure having long sides and short sides, the long sides of adjacent rectangular structures being adjacent to each other.
5. The wearable device of claim 1, further comprising a velcro secured to the cloth cover, the velcro for securing the cloth cover to a human body.
6. The wearable device of claim 1, further comprising a flexible PCB mounted to the cloth cover, the transmitting coil being secured to the flexible PCB.
7. The wearable device of claim 1, further comprising a digital signal generation circuit for generating a plurality of voltage adjustment signals and a radio frequency signal generation circuit for generating a downlink radio frequency signal;
each of the driving circuits includes:
the digital-to-analog converter is used for converting the voltage regulating signal into an analog direct-current voltage;
and the high-frequency power amplifier amplifies the downlink radio-frequency signal into radio-frequency driving voltage by using the analog direct-current voltage, and the radio-frequency driving voltage drives the transmitting coil to transmit radio energy.
8. The wearable device of claim 7, wherein the high frequency power amplifier is a class E amplifier.
9. Nerve stimulation system comprising an external machine and an implant, characterized in that the external machine employs a wearable device according to any one of claims 1-8,
the implant comprises:
a receiving coil for receiving the radio energy and generating a first alternating current;
an ac-ac conversion circuit for converting the first ac power into a second ac power;
the nerve stimulating electrode group is coupled to the output end of the alternating current-alternating current conversion circuit and is used for stimulating nerves by using the second alternating current discharge.
10. The neurostimulation system of claim 9, wherein the implant further comprises:
the sampling circuit is coupled to the alternating current-alternating current conversion circuit and is used for sampling the alternating current-alternating current conversion circuit to obtain a sampling signal, and the sampling signal comprises a voltage sampling signal and/or a current sampling signal;
the uplink modulation circuit is used for modulating the sampling signal into a radio frequency feedback signal;
and the impedance network comprises a first electronic switch and an impedance element, and the radio frequency feedback signal controls the first electronic switch to switch the impedance element on or off with the receiving coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320102685.5U CN219375888U (en) | 2023-02-02 | 2023-02-02 | Wearable device and nerve stimulation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320102685.5U CN219375888U (en) | 2023-02-02 | 2023-02-02 | Wearable device and nerve stimulation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219375888U true CN219375888U (en) | 2023-07-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202320102685.5U Active CN219375888U (en) | 2023-02-02 | 2023-02-02 | Wearable device and nerve stimulation system |
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| Country | Link |
|---|---|
| CN (1) | CN219375888U (en) |
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2023
- 2023-02-02 CN CN202320102685.5U patent/CN219375888U/en active Active
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