CN116135249A - Packaging structure, pulse generator and pulse generation system - Google Patents
Packaging structure, pulse generator and pulse generation system Download PDFInfo
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- CN116135249A CN116135249A CN202111374780.2A CN202111374780A CN116135249A CN 116135249 A CN116135249 A CN 116135249A CN 202111374780 A CN202111374780 A CN 202111374780A CN 116135249 A CN116135249 A CN 116135249A
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- charging
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/18—Applying electric currents by contact electrodes
- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
- A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
- A61N1/3605—Implantable neurostimulators for stimulating central or peripheral nerve system
- A61N1/36125—Details of circuitry or electric components
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- Neurosurgery (AREA)
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- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Radiology & Medical Imaging (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
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- Electrotherapy Devices (AREA)
Abstract
The invention provides a packaging structure, a pulse generator and a pulse generation system, wherein the packaging structure is used for the pulse generator and comprises the following components: a ceramic housing, a charging module, a circuit module, and a metal housing; the ceramic shell and the metal shell are connected with each other to form a cavity; the charging module is arranged in the cavity and close to the ceramic shell relative to the circuit module, the circuit module is arranged in the cavity and close to the metal shell relative to the charging module, and the charging module is connected with the circuit module. So set up, can reduce the vortex effect, guaranteed the charging frequency of charging module, solved the problem that charging efficiency is low, provide more high-efficient feasible basis for implantable pulse generator realizes wireless charging.
Description
Technical Field
The invention relates to the technical field of medical equipment, in particular to a packaging structure, a pulse generator and a pulse generation system.
Background
With the development of interventional medical procedures and neuroscience techniques, implantable neurostimulation systems are widely used in clinic. The electro-stimulation system mainly comprises a pulse generator (impulse generator, IPG) implanted in a body, a stimulation electrode (Lead), an in-vivo Extension wire (Extension), an in-vitro program control device (program & Remoter), a related Surgical tool (Surgical tool) and the like. In an electro-stimulation system, the pulse generator is implanted in the human body as the signal source of the overall system. The active parts of the circuit module of the pulse generator etc. are enclosed in a housing. Currently, the housing of the package structure is made of metal, typically titanium or titanium alloy. Not only ensures the sealing strength, but also has good biocompatibility, and can be used as any pole to assist in completing treatment in monopolar stimulation.
However, the need for rechargeable pulsers has been explored for pulsers that are implanted in the body for long periods of time, and more rechargeable pulsers are on the market. Under such circumstances, the original pure metal shell can seriously affect the charging frequency and the charging efficiency due to the eddy current effect, and more seriously can cause heating, and the excessive heat causes harm to patients. In addition, the inefficiency of charging directly results in longer time for the patient to charge, affecting the patient experience.
Therefore, there is a need to develop a packaging structure, a pulse generator and a pulse generating system to solve at least the above problems.
Disclosure of Invention
The invention aims to provide a packaging structure, a pulse generator and a pulse generation system, so as to solve the problem of low charging efficiency caused by the eddy current effect.
In order to solve the above technical problems, the present invention provides a packaging structure for a pulse generator, the packaging structure comprising: a ceramic housing, a charging module, a circuit module, and a metal housing; the ceramic shell and the metal shell are connected with each other to form a cavity; the charging module is arranged in the cavity and close to the ceramic shell relative to the circuit module, the circuit module is arranged in the cavity and close to the metal shell relative to the charging module, and the charging module is connected with the circuit module.
Optionally, the charging module includes a charging coil and a magnetism isolating member, and the charging coil is disposed between the ceramic housing and the magnetism isolating member; the circuit module is arranged between the metal shell and the magnetism isolating piece.
Optionally, the ceramic shell comprises a first accommodating cavity, the metal shell comprises a second accommodating cavity, and the first accommodating cavity is connected with the second accommodating cavity to form the cavity; the charging module is arranged in the first accommodating cavity; the circuit module is arranged in the second accommodating cavity or in the second accommodating cavity and the first accommodating cavity.
Optionally, when the circuit module is disposed in the second accommodating cavity and the first accommodating cavity, the charging module includes a charging coil and a magnetism isolating member, and the magnetism isolating member is disposed between the circuit module and the charging coil.
Optionally, when the circuit module is disposed in the second accommodating cavity, the packaging structure further includes a sealing layer disposed on the ceramic shell to seal the first accommodating cavity or disposed on the metal shell to seal the second accommodating cavity; the charging module is connected with the circuit module in a feed-through manner at the sealing layer.
Optionally, the ceramic shell and the metal shell are in sealing connection in a metal welding mode.
Optionally, the charging module includes a wireless charging coil.
Optionally, the surface formed by the ceramic shell and the metal shell is a curved surface.
In order to solve the above technical problems, the present invention further provides a pulse generator, including: the package structure as described above.
In order to solve the above technical problem, the present invention further provides a pulse generating system, including: a charger and a pulse generator as described above; the pulse generator is used for being implanted into a machine body, the charger is used for being positioned outside the machine body, and wireless charging is realized between a charging module of the pulse generator and the charger.
In an encapsulation structure, a pulse generator and a pulse generation system provided by the invention, the encapsulation structure is used for the pulse generator, and the encapsulation structure comprises: a ceramic housing, a charging module, a circuit module, and a metal housing; the ceramic shell and the metal shell are connected with each other to form a cavity; the charging module is arranged in the cavity and close to the ceramic shell relative to the circuit module, the circuit module is arranged in the cavity and close to the metal shell relative to the charging module, and the charging module is connected with the circuit module. By the arrangement, the eddy effect can be reduced, the temperature rise can be reduced, the charging frequency of the charging module is guaranteed, the problem of low charging efficiency is solved, and a more efficient and feasible basis is provided for the implantable pulse generator to realize wireless charging.
Drawings
Those of ordinary skill in the art will appreciate that the figures are provided for a better understanding of the present invention and do not constitute any limitation on the scope of the present invention. Wherein:
fig. 1 is a schematic diagram of a package structure according to a first embodiment of the invention.
Fig. 2 is an exploded view of the package structure shown in fig. 1.
Fig. 3 is a schematic diagram of a package structure according to a second embodiment of the invention.
Fig. 4 is a schematic view of the package structure shown in fig. 3 at another angle.
Fig. 5 is an exploded view of a package structure according to a second embodiment of the present invention.
Fig. 6 is a schematic view of the package structure shown in fig. 5 at another angle.
In the accompanying drawings:
10-a ceramic shell, 11-a first accommodating cavity;
20-charging module, 21-charging coil, 22-magnetism isolating piece;
30-circuit module, 31-circuit board;
40-a metal shell, 41-a second accommodating cavity;
50-sealing layer, 51-feed-through connection.
Detailed Description
The invention will be described in further detail with reference to the drawings and the specific embodiments thereof in order to make the objects, advantages and features of the invention more apparent. It should be noted that the drawings are in a very simplified form and are not drawn to scale, merely for convenience and clarity in aiding in the description of embodiments of the invention. Furthermore, the structures shown in the drawings are often part of actual structures. In particular, the drawings are shown with different emphasis instead being placed upon illustrating the various embodiments.
As used in this specification, the singular forms "a", "an" and "the" include plural referents unless the content clearly dictates otherwise. As used in this specification, the term "or" is generally employed in its sense including "and/or" unless the content clearly dictates otherwise. The term "plurality" is generally used in a sense including "at least one," the term "at least two" is generally used in a sense including "two or more," and furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", "a third" may include either explicitly or implicitly one or at least two of such features, and the terms "mounted", "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. Furthermore, as used in this disclosure, an element disposed on another element generally only refers to a connection, coupling, cooperation or transmission between two elements, and the connection, coupling, cooperation or transmission between two elements may be direct or indirect through intermediate elements, and should not be construed as indicating or implying any spatial positional relationship between the two elements, i.e., an element may be in any orientation, such as inside, outside, above, below, or on one side, of the other element unless the context clearly indicates otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances. Furthermore, in the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the invention may be practiced without one or more of these details. In other instances, well-known features have not been described in detail in order to avoid obscuring the invention.
The embodiment of the invention provides a packaging structure, a pulse generator and a pulse generation system, wherein the packaging structure is used for the pulse generator and comprises the following components: a ceramic housing, a charging module, a circuit module, and a metal housing; the ceramic shell and the metal shell are connected with each other to form a cavity; the charging module is arranged in the cavity and close to the ceramic shell relative to the circuit module, the circuit module is arranged in the cavity and close to the metal shell relative to the charging module, and the charging module is connected with the circuit module. By the arrangement, the eddy effect can be reduced, the temperature rise can be reduced, the charging frequency of the charging module is guaranteed, the problem of low charging efficiency is solved, and a more efficient and feasible basis is provided for the implantable pulse generator to realize wireless charging.
The following description refers to the accompanying drawings.
[ embodiment one ]
Referring to fig. 1 to 2, fig. 1 is a schematic diagram of a package structure according to a first embodiment of the invention; fig. 2 is an exploded view of the package structure shown in fig. 1.
Referring to fig. 1 and fig. 2, the present embodiment provides a package structure. The package structure may be used for a pulse generator, the package structure being for implantation in a body, for example in the human body. The package structure includes: ceramic case 10, charging module 20, circuit module 30, and metal case 40.
The ceramic housing 10 and the metal housing 40 are connected to each other to form a cavity for accommodating the charging module 20 and the circuit module 30, so that the package structure forms a unitary structure. The charging module 20 is disposed in the cavity near the ceramic housing 10 relative to the circuit module 30, and the circuit module 30 is disposed in the cavity near the metal housing 40 relative to the charging module 20, so that the package structure forms the ceramic housing 10, the charging module 20, the circuit module 30, and the metal housing 40 that are disposed in sequence; i.e. the charging module 20 and the circuit module 30 are in a stacked state, and the charging module 20 faces the ceramic shell 10. The charging module 20 is connected, preferably electrically, to the circuit module 30. Since the insulating property of the ceramic housing 10 is superior to that of the metal housing 20 and the electromagnetic penetrability of the ceramic housing 10 is superior to that of the metal housing 20, the charging module 20 disposed near the ceramic housing 10 can realize wireless charging with a charger. The charging module 20 and the circuit module 30 may be mounted in the cavity in various manners. In addition, as the insulating property of the ceramic shell 10 is superior to that of the metal shell 20, the eddy current effect can be reduced, the charging frequency of the charging module is ensured, the problem of low charging efficiency is solved, and a more efficient and feasible foundation is provided for the implanted pulse generator to realize wireless charging. In addition, since the metal shell 40 has a higher thermal conductivity, the thermal conductivity of the metal shell 40 is better than that of the ceramic shell 10, and the heat generated by the charging module 20 tends to flow towards the metal shell 40 rather than towards the charger of the ceramic shell 10 in a wireless contact manner, so that heat accumulation during charging can be avoided, eddy current heating can be effectively reduced, and temperature rise can be reduced. Meanwhile, the metal shell 40 can be used as a positive electrode or a negative electrode to complete necessary model stimulation, and a new mode is provided for solving the charging efficiency of the implanted pulse generator.
Furthermore, the ceramic shell 10 has good insulation, good biocompatibility and good mechanical properties, so that the shell can be implanted into a body, for example, a human body, and the ceramic shell can be well compatible with the body and cannot be damaged. In the first embodiment, the ceramic shell 10 is made of yttria-stabilized zirconia, or alumina-stabilized zirconia, alumina, or other materials, which has good insulation, and can allow electromagnetic signals and magnetic fields to pass through, so as to ensure charging efficiency. Of course, other ceramic materials may be used. Because the ceramic material has good processing performance, the thickness of the ceramic shell can be as thin as 0.3mm, and the size of the pulse generator can not be influenced. The metal housing 40 can ensure the electrical conductivity of the housing. So arranged, a combination of ceramic shell 10 and metal shell 40 is employed, such that the package structure has a chargeable basis.
As shown in fig. 2, preferably, the ceramic shell 10 and the metal shell 40 are sealed to form a thin block structure, and a cavity in the thin block is used for accommodating the charging module 20 and the circuit module 30, and the ceramic shell 10 and the metal shell 40 are respectively located at two sides of the thin block structure. Preferably, the charging module 20 includes a charging coil 21 and a magnetism insulator 22. The charging coil 21 is disposed between the ceramic housing 10 and the magnetism insulator 22, so that the magnetism insulator 22 can effectively increase the magnetic induction of the coil. The circuit module 30 is disposed between the metal casing 40 and the magnetism isolating member 22, so that the influence of the charging coil 21 on the circuit module 30 can be reduced, and the charging efficiency can be improved. It should be noted that the packaging structure is preferably implanted into a human body, one surface of the ceramic shell 10 faces the skin direction of the human body, and one surface of the metal shell 40 faces the muscle direction, so that the packaging structure placed in the human body realizes wireless charging.
Preferably, the ceramic shell 10 and the metal shell 40 are hermetically connected by metal welding. More preferably, the ceramic shell 10 and the metal shell 40 are made of gold, silver or platinum as brazing filler metal to realize metal welding sealing. Preferably, the welding interface of the ceramic shell 10 can be metalized in advance, so that the welding strength is enhanced.
Preferably, the charging module 20 includes a wireless charging coil. For example, it is preferable that the charging coil 21 of the charging module 20 is a wireless charging coil to achieve wireless charging.
Preferably, the outer surfaces of the ceramic shell 10 and the metal shell 40 are curved, so that the package structure has better use feeling and improved use satisfaction compared with the design with edges and corners when being placed in a human body.
The present embodiment also provides a pulse generator including: the package structure as described above. The pulse generator has the beneficial effects brought by the packaging structure, and the description is omitted here. The construction and principle of the other components of the pulse generator are referred to in the prior art and will not be explained here.
The first embodiment also provides a pulse generating system, including: a charger and a pulse generator as described above; the pulse generator is used for being implanted into a machine body, the charger is positioned outside the machine body, wireless contact is realized between a ceramic shell of the pulse generator and the charger, and wireless charging is realized between a charging module of the pulse generator and the charger. The pulse generator system has the beneficial effects brought by the pulse generator and will not be described in detail here. The construction and principle of the other components of the pulse generator system are referred to in the prior art and will not be explained here.
[ example two ]
Referring to fig. 3 to 6, fig. 3 is a schematic diagram of a package structure according to a second embodiment of the invention; FIG. 4 is a schematic view of the package structure shown in FIG. 3 at another angle; FIG. 5 is an exploded view of a package structure according to a second embodiment of the present invention; fig. 6 is a schematic view of the package structure shown in fig. 5 at another angle.
The same parts of the package structure of the second embodiment as those of the first embodiment are not described in detail, and only the different points are described below.
Referring to fig. 3 to 4, a package structure is provided in a second embodiment. The package structure includes: ceramic case 10, charging module 20, circuit module 30, and metal case 40.
Preferably, the ceramic housing 10 includes a first receiving chamber 11 having a certain depth, and an opening communicating with the first receiving chamber 11. The metal case 40 includes a second receiving cavity 41 having a certain depth and an opening communicating with the second receiving cavity 41. The opening of the ceramic shell 10 is in butt joint with the opening of the metal shell 40, so that the first accommodating cavity 11 is connected with the second accommodating cavity 41 to form the cavity. The charging module 20 is only disposed in the first accommodating cavity 11, so that the charging coil 21 is surrounded by the ceramic housing, thereby avoiding eddy current effect during charging and ensuring charging efficiency. Compared with the first embodiment, the charging module 20 is separately disposed in the first accommodating cavity 11 of the ceramic housing 10, so that the ceramic housing 10 can be thickened without affecting the overall thickness, and the safety is increased. The circuit module 40 is at least partially disposed in the second receiving cavity 41. Specifically, the circuit module 40 is disposed in the second accommodating cavity 41, or the circuit module 40 is disposed in the second accommodating cavity 41 and the first accommodating cavity 11, and preferably, more than 50% of the circuit module 40 is disposed in the second accommodating cavity 41. In this way, the metal shell 40 and the ceramic shell 10 can form a structure with respective cavities, and can be fixed by up-down butt joint. When the package structure is placed in a human body, a portion of the metal shell 40 is placed on the upper portion, i.e., toward the head, and a portion of the ceramic shell 10 is placed on the lower portion, i.e., toward the foot. An external charger is placed corresponding to the ceramic shell 10 and is wirelessly charged by the charging module 20. In addition, the ceramic shell 10 and the metal shell 40 are provided with a first accommodating cavity 11 and a second accommodating cavity 41, so that compared with the first embodiment, the length of a welding interface is reduced, and the process preparation is simpler; and the thickness of the package structure of the embodiment is smaller.
Preferably, when the circuit module 40 is disposed in the second accommodating cavity 41 and the first accommodating cavity 11, a part of the circuit module 40 and the charging module 20 are jointly accommodated in the first accommodating cavity 11, the charging module 20 includes the charging coil 21 and the magnetism isolating member 22, and the magnetism isolating member 22 is disposed between the circuit module 40 and the charging coil 21, so that the duty ratio of the charging module 20 in the cavity can be reduced, and the influence of the charging module 20 on the circuit module 30 is reduced. Preferably, the circuit module 40 includes a circuit board 31, and the circuit board 31 is disposed in the first accommodating cavity 11 and the second accommodating cavity 41 and is stacked with the charging coil 21, so as to reduce the size of the package structure in the length-width direction.
Preferably, when the circuit module 30 is disposed in the second accommodating cavity 41, the packaging structure further includes a sealing layer 50, where the sealing layer 50 is disposed on the ceramic shell 10 to seal the first accommodating cavity 11, or where the sealing layer 50 is disposed on the metal shell 40 to seal the second accommodating cavity 41; the charging module 20 and the circuit module 30 are connected in a feed-through manner at the sealing layer 50, and the first accommodating cavity 11 and the second accommodating cavity 41 are completely separated by the sealing layer 50, so that the circuit module 30 is sealed in the second accommodating cavity 41, and the leakage-proof safety is enhanced. In the second embodiment, the second accommodating cavity 41 is covered by the sealing layer 50, for example, the sealing layer 50 seals the metal casing 40 separately, and the circuit board 31 extends out of the feed-through connection end 51, so that the charging coil 21 and the circuit module 30 can be connected by means of an embedded feed-through. It can be understood that the circuit board 31 of the circuit module 30 and the charging coil 21 are respectively disposed in the first accommodating cavity 11 and the second accommodating cavity 41, the charging coil 21 is disposed in the ceramic housing, the size of the charging coil 21 can be reduced based on the charging advantage of the ceramic material, the thickness of the whole packaging structure can be reduced to 1-2 mm due to no overlapping part of the circuit board 31 and the charging coil 21. More preferably, the circuit board 31 and the charging coil 21 are located on the same plane, so as to further reduce the thickness of the package structure.
In summary, in the package structure, the pulse generator and the pulse generating system provided by the present invention, the package structure is used for the pulse generator, and the package structure includes: a ceramic housing, a charging module, a circuit module, and a metal housing; the ceramic shell and the metal shell are connected with each other to form a cavity; the charging module is arranged in the cavity and close to the ceramic shell relative to the circuit module, the circuit module is arranged in the cavity and close to the metal shell relative to the charging module, and the charging module is connected with the circuit module. So set up, can reduce the vortex effect, guaranteed the charging frequency of charging module, solved the problem that charging efficiency is low, provide more high-efficient feasible basis for implantable pulse generator realizes wireless charging.
It should be noted that, in the present description, various embodiments are mainly described for differences from other embodiments, and the same similar parts between the various embodiments are only required to be seen with each other
It should also be appreciated that while the present invention has been disclosed in the context of a preferred embodiment, the above embodiments are not intended to limit the invention. Many possible variations and modifications of the disclosed technology can be made by anyone skilled in the art without departing from the scope of the technology, or the technology can be modified to be equivalent. Therefore, any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present invention still fall within the scope of the technical solution of the present invention.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111374780.2A CN116135249A (en) | 2021-11-17 | 2021-11-17 | Packaging structure, pulse generator and pulse generation system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111374780.2A CN116135249A (en) | 2021-11-17 | 2021-11-17 | Packaging structure, pulse generator and pulse generation system |
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| Publication Number | Publication Date |
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| CN116135249A true CN116135249A (en) | 2023-05-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111374780.2A Pending CN116135249A (en) | 2021-11-17 | 2021-11-17 | Packaging structure, pulse generator and pulse generation system |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090171420A1 (en) * | 2007-12-28 | 2009-07-02 | David Brown | Housing for an Implantable Medical Device |
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2021
- 2021-11-17 CN CN202111374780.2A patent/CN116135249A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090171420A1 (en) * | 2007-12-28 | 2009-07-02 | David Brown | Housing for an Implantable Medical Device |
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Country or region after: China Address after: 201318 Room 102, No.15, Lane 222, Guangdan Road, Pudong New Area, Shanghai Applicant after: Shanghai Weichuang Shenyi Medical Technology Co.,Ltd. Address before: No. 102, Building 15, Lane 222, Guangdan Road, Pudong New Area, Shanghai Applicant before: Shanghai Shenyi Medical Technology Co.,Ltd. Country or region before: China |