Pulse generator

Abstract

The utility model provides a pulse generating device which comprises a shell assembly, a control assembly, a pulse emitting assembly and a battery assembly, the battery assembly comprises a battery and a receiving coil, the shell assembly comprises a first shell, a second shell and a third shell, a first space for electromagnetic shielding is formed between the first shell and the second shell, and a second space for electromagnetic shielding is formed between the second shell and the third shell. A first space is formed between the third shell and the first shell, the first space is used for containing the control assembly, the pulse emitting assembly and the battery, a second space is formed between the third shell and the first shell, electromagnetic waves can penetrate through the second space, and the second space is used for containing the receiving coil. The problem that electromagnetic waves are severely attenuated due to shielding of the metal shell during charging is solved, heating is reduced in the charging process, the second space can have the size larger than that of the head of the pulse generating device and can contain a receiving coil with the larger size, and the charging efficiency is improved on the premise that the size of the pulse generating device is not increased.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical equipment, and more specifically, relates to a pulse generating device. Background Art

[0002] An implantable pulse generator (IPG) is an implantable medical device used to generate electrical stimulation pulses according to specific conditions. IPG is increasingly used in clinical settings, such as spinal cord stimulation (SCS), dorsal root ganglion stimulation (DRG), sympathetic nerve stimulation (SNS), vagus nerve stimulation (VNS), deep brain stimulation (DBS), etc. In order to ensure the effective service life of IPG, the batteries used in IPG are also changing from disposable batteries to rechargeable batteries. Therefore, wireless charging technology is essential for rechargeable IPG.

[0003] The charging part of the existing rechargeable IPG generally adopts the following two forms: one is to set the receiving coil inside the titanium alloy shell, that is, to set the receiving coil near the circuit board in the IPG (the circuit board is provided with the circuit constituting the pulse emission component and the circuit constituting the control component). The other is to place the receiving coil on the head of the IPG and encapsulate it with epoxy resin, that is, the receiving coil is located near the connection component.

[0004] There are many problems with the above structures: for example, when the receiving coil in the first structure is placed inside the titanium alloy shell, the electromagnetic waves are severely attenuated by the metal shell during charging, and the charging efficiency is low. According to the law of conservation of energy, the remaining energy is converted into heat, which leads to a rapid temperature rise during the charging process. When the receiving coil in the second structure is placed on the IPG head, the receiving coil needs to be completely encapsulated in the head, causing the entire size of the IPG to become larger, which is contrary to the requirements of clinical use. Utility Model Content

[0005] The purpose of the embodiments of the present utility model is to provide a pulse generating device to solve one or more of the above-mentioned technical problems.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: the utility model provides a pulse generating device, including a housing component, a control component, a pulse issuing component and a battery component;

[0007] The control component is used to control the pulse issuing component to issue pulses, the battery component includes a battery and a receiving coil, the battery is used to provide electrical energy to the pulse issuing component and the control component, and the receiving coil is used to receive external energy and charge the battery;

[0008] The shell assembly includes a first shell, a second shell and a third shell. An electromagnetically shielded first space is formed between the first shell and the second shell. The first space is used to accommodate the control component, the pulse emission component and the battery. A second space is formed between the third shell and the first shell. The second space can penetrate electromagnetic waves and is used to accommodate the receiving coil.

[0009] In one embodiment, the housing assembly further comprises a support frame, the circuit constituting the control assembly and the circuit constituting the pulse emission assembly are arranged in the same circuit board, and the support frame is used to fix the battery and the circuit board;

[0010] The support frame is accommodated and fixed in the first shell or the second shell, or the support frame is located between the first shell and the second shell to form a sandwich structure.

[0011] In one embodiment, the support frame includes a battery fixing groove and a circuit board fixing groove, which are respectively used to accommodate and fix the battery and the circuit board, and the depth of the battery fixing groove is greater than the depth of the circuit board fixing groove.

[0012] In one embodiment, the first housing includes a first sub-housing and a second sub-housing, the first sub-housing is used to cover the circuit board, the second sub-housing is used to cover the battery, and the thickness of the first sub-housing is smaller than the thickness of the second sub-housing.

[0013] In one embodiment, the third shell covers the first sub-shell, and the receiving coil is arranged on the outer surface of the first sub-shell.

[0014] In one embodiment, in the thickness direction, the distance from the third housing to the first sub-housing is equal to the thickness of the second sub-housing.

[0015] In one embodiment, the first sub-shell has a protrusion extending toward the third shell in a thickness direction, and the receiving coil is sleeved on the periphery of the protrusion.

[0016] In one embodiment, the receiving coil is spaced apart from the outer surface of the first shell, and a non-electromagnetic shielding material is disposed between the receiving coil and the outer surface of the first shell.

[0017] In one embodiment, the receiving coil is spaced from the outer surface of the first shell by 0.5-10 mm.

[0018] In one embodiment, a feedthrough assembly is further included, wherein the feedthrough assembly includes a substrate and a first connecting pin penetrating the substrate for electrically connecting the receiving coil and the battery, a hollow stop is provided on the first shell, and the substrate is sealed and fixed at the hollow stop.

[0019] In one embodiment, the hollow stop is arranged at a position of the first shell corresponding to the inside of the receiving coil.

[0020] In one embodiment, it further comprises a connector component, which is disposed on the upper side outside the first space and is used to be detachably electrically connected to the electrode wire so as to transmit the pulse emitted from the pulse emission component to the target position of the human body through the electrode wire;

[0021] It also includes a feedthrough component, which includes a substrate and a second connecting pin passing through the substrate, one end of the second connecting pin is electrically connected to the connecting contact of the connector component, and the other end of the second connecting pin is electrically connected to the control component.

[0022] In one embodiment, a fourth housing is further included, wherein the fourth housing has a third space, and the third space is used to accommodate the connector assembly and one end of the second connecting pin for electrically connecting the connecting contacts of the connector assembly.

[0023] In one embodiment, the fourth shell is integrally formed with the third shell.

[0024] In one embodiment, the connector component is arranged at a middle position in the thickness direction, and the second connecting pin passes over the receiving coil and then bends to be electrically connected to the connecting contact.

[0025] In one embodiment, a Bluetooth component is further included, wherein the Bluetooth component includes a Bluetooth chip and a Bluetooth antenna, the Bluetooth chip is communicatively connected with the control component, and the Bluetooth antenna is disposed outside the first space;

[0026] It also includes a feedthrough component, which includes a substrate and a third connecting pin passing through the substrate, one end of the third connecting pin is electrically connected to the Bluetooth chip, and the other end of the third connecting pin is electrically connected to the Bluetooth antenna.

[0027] The utility model also provides another pulse generating device, including a shell component, a control component, a pulse issuing component, a battery component and a connector component; the control component is used to control the pulse issuing component to issue pulses, the battery component includes a battery and a receiving coil, the battery is used to provide electrical energy to the pulse issuing component and the control component, and the receiving coil is used to receive external energy and charge the battery; the shell component includes a first shell, a second shell, a third shell and a fourth shell, a first electromagnetically shielded space is formed between the first shell and the second shell, the first space is used to accommodate the control component, the pulse issuing component and the battery, a second space is formed between the third shell and the first shell, the second space is permeable to electromagnetic waves, the fourth shell is located on one side of the third shell, the fourth shell has a third space permeable to electromagnetic waves, the connector component is arranged in the third space, the second space is connected to the third space, and the receiving coil is accommodated in the second space and the third space.

[0028] In one embodiment, the connector component is located at a side away from the receiving coil in the thickness direction and includes a plurality of connection contacts;

[0029] One end of the receiving coil is located in the third space and is farther away from the first space than the connector component;

[0030] It also includes a Bluetooth component, the Bluetooth component includes a Bluetooth chip and a Bluetooth antenna, the Bluetooth chip is communicatively connected with the control component, and the Bluetooth antenna is arranged in the third space and is farther away from the first space than the receiving coil;

[0031] It also includes a feed-through component, which includes a substrate and a second connecting pin passing through the substrate, one end of the second connecting pin is electrically connected to the connecting contact of the connector component, and the other end of the second connecting pin is electrically connected to the control component. When the second connecting pin extends upward and then bends to be electrically connected to the connecting contact, the receiving coil is located on the outside of the second connecting pin.

[0032] The pulse generating device provided by the utility model comprises a housing component, a control component, a pulse issuing component and a battery component, wherein the control component is used to control the pulse issuing component to issue pulses, the battery component comprises a battery and a receiving coil, the battery is used to provide electric energy for the pulse issuing component and the control component, the receiving coil is used to receive external energy and charge the battery, the housing component comprises a first housing, a second housing and a third housing, a first electromagnetically shielded space is formed between the first housing and the second housing, the first space is used to accommodate the control component, the pulse issuing component and the battery, a second space is formed between the third housing and the first housing, the second space is permeable to electromagnetic waves and is used to accommodate the receiving coil, the receiving coil of the pulse generating device is arranged in the second space permeable to electromagnetic waves formed by the first housing and the third housing, the problem that the receiving coil is arranged in a metal housing and the electromagnetic waves are shielded by the metal housing and are severely attenuated during charging is solved, the charging efficiency is improved, the charging time is shortened, and the heat generation during the charging process is reduced. The second space can have a larger volume than the head of the pulse generating device, can accommodate a larger receiving coil, and improve the charging efficiency without increasing the size of the pulse generating device. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0034] Figure 1 An exploded diagram of the structure of a pulse generating device provided in one embodiment of the utility model;

[0035] Figure 2 A front perspective view of the internal structure of a pulse generating device provided by an embodiment of the utility model;

[0036] Figure 3 A side cross-sectional view of the internal structure of a pulse generating device provided in one embodiment of the utility model;

[0037] Figure 4 for Figure 3 A local enlarged structural diagram;

[0038] Figure 5 A schematic diagram of the structure of a circuit board, a battery and a support frame provided in one embodiment of the utility model;

[0039] Figure 6 A schematic structural diagram of a first housing and a feed-through assembly provided in one embodiment of the utility model;

[0040] Figure 7A schematic structural diagram of a first housing and another feed-through assembly provided in one embodiment of the utility model;

[0041] Figure 8 A schematic diagram of the assembly of a first sub-housing and a support frame provided in an embodiment of the utility model;

[0042] Fig. 9 A schematic diagram of the assembly of a first sub-housing, a support frame and a second housing provided in an embodiment of the utility model;

[0043] Fig.10 for Fig. 9 Schematic diagram of the structure after installing the receiving coil;

[0044] Fig.11 A schematic diagram of the structure of the electrical connection between the connector assembly and the feed-through assembly provided in one embodiment of the utility model;

[0045] Fig.12 A schematic diagram of the structure of installing a top seal and a side seal provided in one embodiment of the utility model;

[0046] Fig.13 An exploded view of the structure of a pulse generating device provided in another embodiment of the utility model;

[0047] Fig.14 A front perspective view of the internal structure of a pulse generating device provided by another embodiment of the utility model;

[0048] Fig.15 A schematic structural diagram of a receiving coil, a connector assembly and a feed-through assembly provided in another embodiment of the utility model;

[0049] Fig.16 A side cross-sectional view of the internal structure of a pulse generating device provided in another embodiment of the present invention. DETAILED DESCRIPTION

[0050] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0051] In the description of the present invention, it should be understood that the terms "including" and "having" and any variations thereof used herein are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0052] In addition, in the present application, unless otherwise clearly stipulated and limited, the terms "connect", "connected", "fixed", "installed", etc. should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in this application according to the specific circumstances.

[0053] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0054] In addition, the terms "first" and "second" are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone.

[0055] In this embodiment, for the pulse generating device, the proximal end and the left end refer to the end of the pulse generating device close to the electrode wire after the pulse generating device electrode wire is matched, and correspondingly, the distal end and the right end refer to the end of the pulse generating device away from the electrode wire after the pulse generating device and the electrode wire are matched. The front end and the front side refer to the end of the pulse generating device away from the back of the human body after implantation; the rear end and the rear side refer to the end of the pulse generating device close to the back of the human body after implantation; the thickness direction refers to the direction from the rear end to the front end or from the front end to the rear end. For the electrode wire, the proximal end refers to the end close to the pulse generating device, and the distal end refers to the end away from the pulse generating device.

[0056] In response to one or more of the above-mentioned problems, some embodiments of the present application provide a pulse generating device, including a shell component, a control component, a pulse issuing component, and a battery component; the control component is used to control the pulse issuing component to issue pulses, the battery component includes a battery and a receiving coil, the battery is used to provide electrical energy to the pulse issuing component and the control component, and the receiving coil is used to receive external energy and charge the battery; the shell component includes a first shell, a second shell and a third shell, an electromagnetically shielded first space is formed between the first shell and the second shell, the first space is used to accommodate the control component, the pulse issuing component and the battery, a second space is formed between the third shell and the first shell, the second space can penetrate electromagnetic waves, and is used to accommodate the receiving coil.

[0057] In response to one or more of the above-mentioned problems, other embodiments of the present application provide a pulse generating device, including a shell component, a control component, a pulse issuing component, a battery component and a connector component; the control component is used to control the pulse issuing component to issue pulses, the battery component includes a battery and a receiving coil, the battery is used to provide electrical energy to the pulse issuing component and the control component, and the receiving coil is used to receive external energy and charge the battery; the shell component includes a first shell, a second shell, a third shell and a fourth shell, a first electromagnetically shielded space is formed between the first shell and the second shell, the first space is used to accommodate the control component, the pulse issuing component and the battery, a second space is formed between the third shell and the first shell, the second space is permeable to electromagnetic waves, the fourth shell is located on one side of the third shell, the fourth shell has a third space that is permeable to electromagnetic waves, the third space is used to accommodate the connector component, and the second space and the third space are connected, and the receiving coil is accommodated in the second space and the third space.

[0058] This embodiment has no special restrictions on the application scenarios of the pulse generating device. It can be a pulse generating device used for neural stimulation regulation, such as spinal cord stimulation (SCS), dorsal root ganglion stimulation (DRG), sympathetic nerve stimulation (SNS), vagus nerve stimulation (VNS), deep brain stimulation (DBS). It can also be a pulse generating device for regulating arrhythmias, such as single-chamber pacemakers, dual-chamber pacemakers, and cardiac resynchronization pacemakers (CRT).

[0059] The pulse generating device provided by the utility model is described in detail below in conjunction with specific embodiments.

[0060] Figure 1 This is an exploded view of the structure of a pulse generating device provided in one embodiment of the utility model. Figure 2A front perspective view of the internal structure of a pulse generating device provided by an embodiment of the utility model. Figure 3 A side cross-sectional view of the internal structure of a pulse generating device provided in one embodiment of the utility model. Figure 4 for Figure 3 A local enlarged structural diagram.

[0061] See also Figure 1-Figure 4 This embodiment provides a pulse generating device for generating electric pulses to target tissues of the human body. The pulse generating device includes a housing component 1, a control component, a pulse generating component, and a battery component 2; the control component is used to control the pulse generating component to generate pulses, the battery component 2 includes a battery 21 and a receiving coil 22, the battery 21 is used to provide power to the pulse generating component and the control component, and the receiving coil 22 is used to receive external energy and charge the battery 21; the housing component 1 includes a first housing 11, a second housing 12, and a third housing 13, a first electromagnetically shielded space is formed between the first housing 11 and the second housing 12, the first space is used to accommodate the control component, the pulse generating component, and the battery 21, a second space is formed between the third housing 13 and the first housing 11, the second space is permeable to electromagnetic waves, and is used to accommodate the receiving coil 22.

[0062] In the pulse generating device in this embodiment, a first space is formed by the first shell 11 and the second shell 12. The first space can shield electromagnetic waves and is used to accommodate the control component, the pulse issuing component and the battery 21; the receiving coil 22 is arranged in the second space formed by the first shell 11 and the third shell 13, which can penetrate electromagnetic waves. In this way, on the one hand, the problem that the receiving coil 22 is arranged in the metal shell, and the electromagnetic waves are shielded by the metal shell and attenuated during charging, resulting in low charging efficiency, is solved; on the other hand, the receiving coil 22 is arranged on the outside of the first shell 11, making full use of the space of the main part of the pulse generating device instead of the head, and the receiving coil 22 can be made larger, which can effectively increase the inductance value, thereby improving the charging efficiency without increasing the size of the pulse generating device. The first space in this embodiment is a closed space because it shields electromagnetic waves.

[0063] refer to Figure 1, the pulse generating device shell assembly of this embodiment includes a first shell 11, a second shell 12 and a third shell 13. Among them, the first shell 11 and the second shell 12 are generally made of biocompatible metal materials. This embodiment has no special restrictions on the specific materials of the first shell 11 and the second shell 12, for example, titanium alloy. The first shell 11 and the second shell 12 form a first space for shielding electromagnetic signals, and the control component, the pulse emission component and the battery 21 are accommodated in the first space to prevent electromagnetic waves from interfering with their work. Further, after the pulse generating device is implanted in the human body, the first shell 11 is set to be further away from the back of the human body relative to the second shell 12, so that the pulse generating device can receive electromagnetic waves for charging. The third shell is located on the side of the first shell away from the second shell, and a second space that can penetrate electromagnetic waves is formed between the third shell and the first shell, and the receiving coil is located in the second space. This embodiment has no special restrictions on the material of the third shell 13, for example, epoxy resin. Because the second space is a space where non-shielded electromagnetic waves can penetrate, the effect of electromagnetic waves shielded by the metal shell during charging is reduced, making the charging efficiency of the receiving coil higher, reducing the heat generated during charging, and making the battery charging time shorter and safer during clinical use. Moreover, in this embodiment, the third shell 13 is arranged on one side of the first shell 11 and the second shell 12, and the second space is located on one side of the first space. Therefore, the second space can have a larger volume than the head of the pulse generating device, and can accommodate a larger size of the receiving coil 22. On the premise of not increasing the size of the pulse generating device, the inductance value of the receiving coil 22 is effectively increased, thereby improving the charging efficiency.

[0064] Figure 5 This is a schematic diagram of the structure of the circuit board, battery and support frame provided by the embodiment of the utility model. Figure 1 , Figure 3 , Figure 5As shown, the housing assembly 1 of the pulse generating device of this embodiment further includes a support frame 14 for fixing the battery 21 as well as the control assembly and the pulse discharging assembly. Specifically, the circuit constituting the control assembly and the circuit constituting the pulse discharging assembly are arranged in the same circuit board 3, which helps to save space. The circuit board 3 of this embodiment can be a PCB board, or an FPC board, or a combination structure of a PCB board and an FPC board. In some examples, the circuit constituting the control assembly is a digital circuit. In other examples, the circuit constituting the pulse discharging assembly is an analog circuit. Further, the support frame 14 includes a battery fixing groove 141 and a circuit board fixing groove 142, which are respectively used to accommodate and fix the battery 21 and the circuit board 3. In this embodiment, the support frame 14 is completely accommodated and fixed in the first housing 11 and / or the second housing 12. For example, the second housing 12 is a container, the support frame 14 is bonded and fixed in the second housing 12, and the edges of the first housing 11 and the second housing 12 are welded. In other embodiments, the support frame 14 is located between the first shell 11 and the second shell 12 to form a sandwich structure, that is, the frame of the support frame 14 serves as the frame of the first space, and the edges of the first shell 11 and the second shell 12 are welded to the frame of the support frame 14. Preferably, in order to increase the capacity of the battery 21, a larger battery 21 is required, so the depth of the battery fixing groove 141 is greater than the depth of the circuit board fixing groove 142.

[0065] Figure 8 A schematic diagram of the assembly of the support frame and the first sub-shell provided in an embodiment of the utility model. Fig. 9 A schematic diagram of the assembly of the first sub-housing, the support frame and the second housing provided in an embodiment of the utility model, Fig.10 for Fig. 9 Schematic diagram of the structure after installing the receiving coil. Figure 1 , Figure 5 , Figure 8-10In order to further increase the capacity of the battery 21, the thickness of the battery 21 is further increased, that is, the height of the battery 21 accommodated in the battery fixing groove 141 is greater than the height of the circuit board 3 accommodated in the circuit board fixing groove 142. Correspondingly, the first housing 11 includes a first sub-housing 111 and a second sub-housing 112, the first sub-housing 111 can cover the circuit board 3, the second sub-housing 112 can cover the battery 21, and the thickness of the first sub-housing 111 is less than the thickness of the second sub-housing 112. Further, in order to make the size of the pulse generator compact and more concise, the third housing 13 covers the first sub-housing 111, and the receiving coil 22 is arranged on the outer surface of the first sub-housing 111, that is, the surface of the first sub-housing 111 away from the second housing 12. Preferably, in the thickness direction, the distance from the third housing 13 to the first sub-housing 111 is equal to the thickness of the second sub-housing 112. In this way, the size and surface of the pulse generator are smoother and there is no obvious protrusion. The first sub-housing 111 and the second sub-housing 112 of this embodiment are separate, which is convenient for processing, and the two can be fixed by welding, bonding, etc. Of course, in other embodiments, the first sub-shell 111 and the second sub-shell 112 can be integrally formed. Furthermore, the first sub-shell 111 has a protrusion extending toward the third shell 13 in the thickness direction, so that the circuit board 3 can be provided with electrical components with a certain height such as capacitors and inductors at corresponding positions. Preferably, the protrusion is located in the middle part of the first sub-shell 111. The receiving coil 22 is sleeved on the periphery of the protrusion. In other embodiments, the height of the battery 21 accommodated in the battery fixing groove 141 is substantially consistent with the height of the circuit board 3 accommodated in the circuit board fixing groove 142. At this time, the thickness of the first sub-shell 111 can be equal to the thickness of the second sub-shell 112, so that there is no obvious protrusion on the surface of the first shell 11, and the third shell 13 can cover the entire surface of the first shell 11. In this way, the area of ​​the receiving coil 22 can be further expanded, but the capacity of the battery 21 is correspondingly reduced.

[0066] refer to Figure 2-4 as well as Fig.10, the second space is formed by the outer surface of the first sub-shell 111 and the third shell 13, and the receiving coil 22 is arranged in the second space. Compared with the existing IPG, the size of the coil can be effectively increased without increasing the size of the pulse generating device, and the second space allows the magnetic flux to pass through with low loss, so that the charging efficiency is greatly improved. Preferably, the receiving coil 22 is arranged around the edge of the second space, that is, the receiving coil 22 is a rectangular ring or a square ring and is arranged on the first sub-shell 111, and the edge of the receiving coil 22 is adjacent to the edge of the first sub-shell 111 to increase the area of ​​the receiving coil 22 as much as possible. Further, the above-mentioned protrusion is accommodated in the ring of the receiving coil 22 to make full use of the space. Preferably, the receiving coil 22 is spaced from the outer surface of the first shell 11, and non-electromagnetic shielding material is filled in the middle to avoid the magnetic lines of force from forming a closed loop and improve the charging efficiency. More preferably, the interval is 0.5mm-10mm. This embodiment has no special restrictions on non-electromagnetic shielding materials, and air can also be regarded as non-electromagnetic shielding materials. In this embodiment, there is no special restriction on the wireless charging method and the corresponding coil parameters and specific structure. In this embodiment, magnetic field resonance wireless charging is used as an example for illustrative explanation. For example, the transmitting resonant frequency is low frequency, preferably 10KHz to 1000KHz, the external transmitting coil Ls ranges from 200uH to 1000uH, and the receiving coil Ls ranges from 30uH to 2000uH. Of course, the transmitting resonant frequency can also be tens to hundreds of MHz, and parameters such as the inductance of the receiving coil 22 also need to be adjusted accordingly. Those skilled in the art can adjust the relevant parameters according to the transmitting resonant frequency to obtain the desired effect. In addition to the magnetic field resonance charging method, the technical solution of this embodiment can also adopt wireless charging forms such as electromagnetic induction, electric field coupling, and radio wave (Radio Reception).

[0067] Figure 6 A schematic diagram of the structure of the first housing and the feed-through assembly provided in an embodiment of the utility model is provided. Fig.11 This is a schematic diagram of the electrical connection between the connector assembly and the feed-through assembly provided by the embodiment of the utility model. Figure 6-Figure 11, the pulse generating device of this embodiment further includes a feedthrough component 4, which is used to electrically connect the receiving coil 22 to the battery 21. Specifically, the feedthrough component 4 of this embodiment includes a substrate 41 and a first connecting pin 42 penetrated on the substrate 41. Correspondingly, a hollow stop 113 for positioning is provided on the first sub-shell 111, the substrate 41 is arranged on the hollow stop 113 and is sealed and fixed to the first shell 11 by laser welding or other fixing methods, one end of the first connecting pin 42 is electrically connected to the receiving coil 22, and the other end of the first connecting pin 42 is electrically connected to the battery 21. Preferably, the receiving coil 22 is annular, and the position of the hollow stop 113 arranged on the first sub-shell corresponds to the position inside the ring of the receiving coil 22 to expand the area of ​​the receiving coil 22. Further, the battery assembly 2 also includes a charging circuit. For example, the charging circuit includes a rectifier bridge circuit for converting AC to DC, a filter circuit, a voltage stabilizing output circuit, etc. The charging circuit and the circuit constituting the control component and the circuit constituting the pulse emission component are arranged on the same circuit board 3. Among them, the circuit board 3 can be a PCB board, or an FPC board, or a combination structure of a PCB board and an FPC board. Preferably, the battery assembly 2 also includes a feedback circuit and a communication circuit. The feedback circuit is used to feedback voltage to the external charging transmitting circuit so that the charging transmitting circuit determines whether to increase or reduce the transmitting energy. The communication circuit is used for the charging transmitting circuit to communicate with the charging circuit according to a specific charging protocol. Similarly, the feedback circuit and the communication circuit can also be arranged on the above-mentioned circuit board 3. The circuit board 3 is provided with a pin hole at a position corresponding to the feedthrough component 4, which is used to connect to the first connecting pin 42 to realize the electrical connection between the charging circuit and the receiving coil 22.

[0068] See also Figure 1 , Fig.11 , the pulse generating device of this embodiment also includes a connector assembly 5, and the connector assembly 5 is arranged outside the first space. Generally speaking, the connector assembly 5 is arranged on the upper side outside the first space, that is, the connector assembly 5 is located at the head of the pulse generating device. The connector assembly 5 is used to be detachably electrically connected to the electrode wire so as to transmit the pulse emitted from the pulse emission assembly to the target position of the human body through the electrode wire. Preferably, the connector assembly 5 is also used to obtain human electrophysiological information from the electrode wire and send it to the control assembly. Specifically, the electrode wire includes a proximal connection end and a distal electrode end, and the connection end is electrically connected to the connector assembly 5 to achieve electrical connection between the electrode wire and the pulse generating device. The connector assembly 5 includes a plurality of connection contacts. The number of connection contacts of the connector assembly 5 is consistent with the connection contacts of the electrode wire connection end. This embodiment does not limit the specific number of connection contacts of the connector assembly 5.

[0069] See also Figure 6 , Figure 8-Figure 11, the feedthrough component 4 of this embodiment includes a substrate 41 and a second connection pin 43 that is inserted through the substrate 41, one end of the second connection pin 43 is electrically connected to the connection contact of the connector component 5, and the other end of the second connection pin 43 is electrically connected to the control component through the pin hole on the circuit board 3. Specifically, the number of connection pins (including the first connection pin and the second connection pin) in the feedthrough component 4 is greater than or equal to the sum of the number of second connection pins 43 for the connection contact of the connector component 5 and the number of first connection pins 42 for the receiving coil 22. Generally, the number of first connection pins 42 for the receiving coil 22 is two, and the number of second connection pins 43 for the connection contact of the connector component 5 is consistent with the number of connection contacts of the connector component 5. For example, in this embodiment, the number of connection pins in the feedthrough component 4 is eight, the number of first connection pins 42 for the receiving coil 22 is two, the number of second connection pins 43 for the connection contact of the connector component 5 is three, and the remaining three are idle. Correspondingly, the number of pin holes on the circuit board 3 is greater than or equal to the sum of the number of first connection pins 42 and the number of second connection pins 43 in the feedthrough component 4. In this embodiment, the number of pin holes on the circuit board 3 is eight, which is consistent with the number of connecting pins in the feed-through component 4, so as to flexibly adjust the number of connecting contacts of the connector component 5.

[0070] See also Figure 3 and Figure 4 , the connector component 5 is arranged approximately in the middle of the thickness direction. The receiving coil 22 is located in the second space, preferably, arranged at the edge of the second space to maximize the area of ​​the receiving coil 22. Further, the second connecting pin 43 of the feedthrough component 4 passes over the receiving coil 22 and then bends to be electrically connected to the connecting contact of the connector component 5.

[0071] See also Figure 7, the pulse generating device of this embodiment also includes a Bluetooth component, and the Bluetooth component includes a Bluetooth chip (not shown in the figure) and a Bluetooth antenna 45. The Bluetooth chip is communicatively connected with the control component. The Bluetooth chip can be arranged in the same circuit board 3 as the circuit constituting the control component and the circuit constituting the pulse emission component, or it can be arranged on another circuit board, and the two are connected by a flat cable. This embodiment has no particular restriction on the specific type of the Bluetooth chip. The Bluetooth antenna 45 is arranged outside the first space. For example, the Bluetooth antenna 45 is located on the same side as the connector component 5, and more preferably, it is farther away from the first space than the connector component 5 to reduce signal interference. Similarly, this embodiment has no particular restriction on the specific structure of the Bluetooth antenna 45. The feedthrough component 4 also includes a third connection pin 44, one end of the third connection pin 44 is electrically connected to the Bluetooth antenna 45, and the other end of the third connection pin 44 is electrically connected to the Bluetooth control component through the pin hole on the circuit board 3. For example, in this embodiment, the number of connecting pins in the feedthrough component 4 is eight, the number of first connecting pins 42 for receiving coil 22 is two, the number of second connecting pins 43 for connecting contacts of connector component 5 is three, the number of third connecting pins 44 for Bluetooth antenna 45 is one, and the remaining two are idle. Preferably, the third connecting pin 44 is located on the side to facilitate connecting a larger Bluetooth antenna 45. In this embodiment, the number of pin holes on the circuit board 3 is eight, which is consistent with the number of connecting pins in the feedthrough component 4, so as to flexibly adjust the number of connecting contacts of the connector component 5.

[0072] Fig.12 For a schematic diagram of the structure of the top seal and the side seal provided in the embodiment of the utility model, please refer to Figure 1 , Fig.12 Furthermore, the shell assembly 1 also includes a fourth shell 15, and the fourth shell 15 forms a third space. The third space is used to accommodate the connector assembly 5 and one end of the connecting pin for connecting the connecting contacts of the connector assembly 5. The fourth shell 15 can be made of non-metallic material. For example, the fourth shell 15 is made of epoxy resin. Preferably, the third shell 13 and the fourth shell 15 are integrally formed. For example, after the first shell 11 and the second shell 12 are sealed and welded, the connector assembly 5 is arranged at the head end of the first shell 11 and the second shell 12, and the connecting pins in the feed-through assembly 4 are respectively welded to the connecting contacts of the connector assembly 5 and the receiving coil, and then the epoxy resin is encapsulated to form the third shell 13 and the fourth shell 15.

[0073] See also Figure 1 , Figure 2 , Fig.11 and Fig.12, further, the connector assembly 5 is provided with a screw hole 51 perpendicular to the axial direction for fixing the connecting end of the electrode wire. Correspondingly, the fourth shell 15 is provided with a first through hole 151 connected to the screw hole 51. The fourth shell 15 is provided with a second through hole 152 at the end where the connector assembly 5 is connected to the electrode wire, so that the electrode wire can be inserted into the connector assembly 5 after passing through the second through hole 152. The pulse generating device also includes a top seal 6 and a side seal 7. The side seal 7 is sealed and fixed to the second through hole 152, and when the electrode wire is inserted into the connector assembly 5 after passing through the second through hole 152, it wraps the electrode wire to prevent liquid (such as body fluid or blood) from penetrating. The top seal 6 is sealed and fixed to the first through hole 151, and when the connector assembly 5 and the electrode wire need to be locked and fixed, the tool for fixing the locking screw can directly pierce the top seal 6 to tighten the locking screw, and when the tool for fixing the locking screw is withdrawn from the top seal 6, the top seal 6 will return to a sealed state to seal the first through hole 151 to prevent liquid from penetrating. Preferably, the top seal 6 is fixed to the fourth shell 15 by a physical method (such as interference fit) or a chemical method (such as medical glue). Similarly, the side seal is fixed to the fourth shell 15 by a physical method (such as interference fit) or a chemical method (such as medical glue). Preferably, the side seal 7 is made of silicone. Preferably, the top seal 6 is also made of silicone.

[0074] Table 1 is a comparison table of charging parameters when the receiving coil of magnetic field resonance wireless charging is set in a titanium alloy shell and in different positions in the second space. Among them, the transmitting resonant frequency is 20KHz~250KHz, the external transmitting coil Ls is between 400uH~600uH, the charging receiving coil Ls is between 50uH~100uH, and the distance between the external transmitting coil and the charging receiving coil is 1-2cm. As can be seen from Table 1, compared with the technical solution of the traditional receiving coil 22 being set in the titanium alloy shell, the technical solution of the receiving coil 22 of this embodiment being set on the surface of the first shell 11 (made of titanium alloy) while maintaining the volume of the pulse generating device, the charging efficiency is improved by more than 4%, especially in the solution of setting the receiving coil 22 at intervals on the surface of the first shell 11, the charging efficiency is improved by more than 12%, which greatly shortens the charging time and reduces the heating of the pulse stimulation device.

[0075]

[0076] Table 1 Comparison of charging efficiency when the receiving coil of magnetic field resonance wireless charging is set in the titanium alloy shell and in different positions in the second space

[0077] The pulse generating device provided by the utility model comprises a shell component, a control component, a pulse issuing component and a battery component. The control component is used to control the pulse issuing component to issue pulses. The battery component comprises a battery and a receiving coil. The battery is used to provide electric energy for the pulse issuing component and the control component. The receiving coil is used to receive external energy and charge the battery. The shell component comprises a first shell, a second shell and a third shell. A first electromagnetically shielded space is formed between the first shell and the second shell. The first space is used to accommodate the control component, the pulse issuing component and the battery. A second space is formed between the third shell and the first shell. The second space is permeable to electromagnetic waves and is used to accommodate the receiving coil. The receiving coil of the pulse generating device is arranged in the second space permeable to electromagnetic waves formed by the first shell and the third shell, which solves the problem that the receiving coil is arranged in a metal shell and the electromagnetic waves are shielded by the metal shell and severely attenuated during charging, thereby improving the charging efficiency, shortening the charging time, and reducing the heat generated during the charging process. The second space can have a larger volume than the head of the pulse generating device and can accommodate a larger receiving coil, thereby improving the charging efficiency without increasing the size of the pulse generating device.

[0078] The assembly method of the pulse generator of this embodiment is shown below:

[0079] S101, see Figure 5 , Figure 8 The battery 21 and the circuit board 3 provided with the circuit constituting the pulse emission component and the circuit constituting the control component are installed on the supporting frame 14.

[0080] S102, see Fig. 9 , install the substrate 41 of the feedthrough component 4 at the hollow stop 113 of the first sub-shell 111 and pre-fix it by laser spot welding, weld one end of the first connecting pin 42 and the second connecting pin 43 in the feedthrough component 4 to the circuit board 3 for electrical connection, place the support frame 14 in the second shell 12, and bond and fix it to the second shell 12.

[0081] S103, see Figure 9-11 , laser seal weld the first shell 11 and the second shell 12, install the receiving coil 22 on the side of the first shell 11 away from the second shell 12, weld and electrically connect the other end of the first connecting pin 42 in the feedthrough component 4 to the receiving coil, set the connector component 5 on the upper side outside the first space, and weld and electrically connect the connecting contact of the connector component 5 to the other end of the second connecting pin 43 in the feedthrough component 4.

[0082] S104, see Figure 1 , Fig.11 , Fig.12A mold covering the receiving coil 22, the feed-through component 4 and the connector component 5 is provided, and the third shell 13 and the fourth shell 15 are integrally formed by encapsulating them with epoxy resin. The fourth shell 15 is provided with a first through hole 151 and a second through hole 152.

[0083] S105, see Figure 1 , Fig.12 , provide a top seal 6 and a side seal 7, and seal and fix the top seal 6 to the first through hole 151 by bonding, and seal and fix the side seal 7 to the second through hole 152 by bonding.

[0084] Fig.13 An exploded view of the structure of a pulse generating device provided in another embodiment of the utility model; Fig.14 A front perspective view of the internal structure of the pulse generating device provided in this embodiment. Fig.15 A schematic diagram of the structures of the receiving coil, connector assembly and feed-through assembly provided in this embodiment. Fig.16 A side sectional view of the internal structure of the pulse generating device provided in this embodiment.

[0085] See also Figure 13-Figure 16 , this embodiment provides a pulse generating device for generating electric pulses to target tissues of a human body. The pulse generating device comprises a housing component 1, a control component, a pulse discharging component, a battery component 2 and a connector component 5; the control component is used to control the pulse discharging component to discharge pulses, the battery component 2 comprises a battery 21 and a receiving coil 22, the battery 21 is used to provide electric energy to the pulse discharging component and the control component, and the receiving coil 22 is used to receive external energy and charge the battery 21; the housing component 1 comprises a first housing 11, a second housing 12, a third housing 13 and a fourth housing, a first electromagnetically shielded space is formed between the first housing 11 and the second housing 12, the first space is used to accommodate the control component, the pulse discharging component and the battery 21, a second space that can penetrate electromagnetic waves is formed between the third housing 13 and the first housing 11, the fourth housing has a third space that can penetrate electromagnetic waves, the third space is used to accommodate the connector component 5, and the second space and the third space are connected, and the receiving coil 22 is accommodated in the second space and the third space.

[0086] The difference from the above embodiment is that in this embodiment, the second space and the third space are connected, and the receiving coil 22 is arranged in the space where the second space and the third space overlap. In this way, the size of the receiving coil 22 can be made larger, and the inductance value can be further increased.

[0087] See also Fig.15 and Fig.16 ,and Figure 3 and Figure 4In comparison, the connector component 5 is biased to one side in the thickness direction, specifically, is located on the side away from the receiving coil 4, so that the receiving coil 22 can extend into the third space. One end of the receiving coil 22 is located in the third space and is further away from the first space than the connector component 5, so as to further increase the area of ​​the receiving coil 22. At the same time, when the second connection pin 43 of the feedthrough component 4 extends upward and then bends to be electrically connected to the connection contact of the connector component 5, the receiving coil 22 is located on the outside of the second connection pin 43. Furthermore, the Bluetooth antenna 45 is further away from the first space than the receiving coil 22 to avoid signal interference.

[0088] The above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the above embodiments, or replace some or all of the technical features therein with equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A pulse generating device, characterized in that: It includes a housing component, a control component, a pulse emission component and a battery component; The control component is used to control the pulse issuing component to issue pulses, the battery component includes a battery and a receiving coil, the battery is used to provide electrical energy to the pulse issuing component and the control component, and the receiving coil is used to receive external energy and charge the battery; The shell assembly includes a first shell, a second shell and a third shell. An electromagnetically shielded first space is formed between the first shell and the second shell. The first space is used to accommodate the control component, the pulse emission component and the battery. A second space is formed between the third shell and the first shell. The second space can penetrate electromagnetic waves and is used to accommodate the receiving coil.

2. The pulse generating device according to claim 1, characterized in that: The housing assembly further comprises a support frame, the circuit constituting the control assembly and the circuit constituting the pulse emission assembly are arranged in the same circuit board, and the support frame is used to fix the battery and the circuit board; The support frame is accommodated and fixed in the first shell or the second shell, or the support frame is located between the first shell and the second shell to form a sandwich structure.

3. The pulse generating device according to claim 2, characterized in that: The support frame comprises a battery fixing groove and a circuit board fixing groove, which are used to accommodate and fix the battery and the circuit board respectively, and the depth of the battery fixing groove is greater than the depth of the circuit board fixing groove.

4. The pulse generating device according to claim 2, characterized in that: The first housing includes a first sub-housing and a second sub-housing, the first sub-housing is used to cover the circuit board, the second sub-housing is used to cover the battery, and the thickness of the first sub-housing is smaller than the thickness of the second sub-housing.

5. The pulse generating device according to claim 4, characterized in that: The third shell covers the first sub-shell, and the receiving coil is arranged on the outer surface of the first sub-shell.

6. The pulse generating device according to claim 5, characterized in that: In the thickness direction, the distance from the third housing to the first sub-housing is equal to the thickness of the second sub-housing.

7. The pulse generating device according to claim 4, characterized in that: The first sub-shell has a protrusion extending toward the third shell in a thickness direction, and the receiving coil is sleeved on the periphery of the protrusion.

8. The pulse generating device according to claim 1, characterized in that: The receiving coil is spaced apart from the outer surface of the first shell, and a non-electromagnetic shielding material is disposed between the receiving coil and the outer surface of the first shell.

9. The pulse generating device according to claim 8, characterized in that: The receiving coil is spaced from the outer surface of the first shell by 0.5-10 mm.

10. The pulse generating device according to claim 1, characterized in that: It also includes a feedthrough component, which includes a substrate and a first connecting pin that penetrates the substrate and is used to electrically connect the receiving coil and the battery. A hollow stop is provided on the first shell, and the substrate is sealed and fixed at the hollow stop.

11. The pulse generating device according to claim 10, characterized in that: The receiving coil is ring-shaped, and the position of the hollow stopper arranged on the first shell corresponds to the position inside the receiving coil ring.

12. The pulse generating device according to claim 1, characterized in that: Also included is a connector component, which is disposed outside the first space and includes a plurality of connection contacts, and is used to be detachably electrically connected to the electrode wire so as to transmit the pulse emitted from the pulse emission component to the target position of the human body through the electrode wire; It also includes a feedthrough component, which includes a substrate and a second connecting pin passing through the substrate, one end of the second connecting pin is electrically connected to the connecting contact of the connector component, and the other end of the second connecting pin is electrically connected to the control component.

13. The pulse generating device according to claim 12, characterized in that: A fourth housing is also included. The fourth housing has a third space. The third space is used to accommodate the connector assembly and one end of the second connecting pin for electrically connecting the connecting contact.

14. The pulse generating device according to claim 13, characterized in that: The fourth shell is integrally formed with the third shell.

15. The pulse generating device according to claim 12, characterized in that: The connector component is arranged at a middle position in the thickness direction, and the second connecting pin passes over the receiving coil and then bends to be electrically connected to the connecting contact.

16. The pulse generating device according to claim 1, characterized in that: It also includes a Bluetooth component, the Bluetooth component includes a Bluetooth chip and a Bluetooth antenna, the Bluetooth chip is communicatively connected with the control component, and the Bluetooth antenna is arranged outside the first space; It also includes a feedthrough component, which includes a substrate and a third connecting pin passing through the substrate, one end of the third connecting pin is electrically connected to the Bluetooth chip, and the other end of the third connecting pin is electrically connected to the Bluetooth antenna.

17. A pulse generating device, characterized in that: It includes a shell component, a control component, a pulse issuing component, a battery component and a connector component; the control component is used to control the pulse issuing component to issue pulses, the battery component includes a battery and a receiving coil, the battery is used to provide electrical energy to the pulse issuing component and the control component, and the receiving coil is used to receive external energy and charge the battery; the shell component includes a first shell, a second shell, a third shell and a fourth shell, a first electromagnetically shielded space is formed between the first shell and the second shell, the first space is used to accommodate the control component, the pulse issuing component and the battery, a second space is formed between the third shell and the first shell, the second space is permeable to electromagnetic waves, the fourth shell is located on one side of the third shell, the fourth shell has a third space that is permeable to electromagnetic waves, the connector component is arranged in the third space, the second space is connected to the third space, and the receiving coil is accommodated in the second space and the third space.

18. The pulse generating device according to claim 17, characterized in that: The connector component is located at a side away from the receiving coil in the thickness direction and includes a plurality of connection contacts; One end of the receiving coil is located in the third space and is farther away from the first space than the connector component; It also includes a Bluetooth component, the Bluetooth component includes a Bluetooth chip and a Bluetooth antenna, the Bluetooth chip is communicatively connected with the control component, and the Bluetooth antenna is arranged in the third space and is farther away from the first space than the receiving coil; It also includes a feed-through component, which includes a substrate and a second connecting pin passing through the substrate, one end of the second connecting pin is electrically connected to the connecting contact of the connector component, and the other end of the second connecting pin is electrically connected to the control component. When the second connecting pin extends upward and then bends to be electrically connected to the connecting contact, the receiving coil is located on the outside of the second connecting pin.

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