CN209123181U - A kind of encapsulating structure of embedded nerve stimulator - Google Patents
A kind of encapsulating structure of embedded nerve stimulator Download PDFInfo
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- CN209123181U CN209123181U CN201820639951.7U CN201820639951U CN209123181U CN 209123181 U CN209123181 U CN 209123181U CN 201820639951 U CN201820639951 U CN 201820639951U CN 209123181 U CN209123181 U CN 209123181U
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- nerve stimulator
- encapsulating structure
- insulating sleeve
- embedded nerve
- cathode electrode
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Abstract
A kind of encapsulating structure of embedded nerve stimulator, including shell and the electronic element assembly for being disposed in the housing and being able to achieve nerve stimulator function, the shell includes the insulating sleeve, anode electrode and cathode electrode with biocompatibility, and the anode electrode and cathode electrode are respectively arranged on the both ends of the insulating sleeve and are tightly connected by braze-welded structure.Insulating sleeve and the anode electrode and cathode electrode at both ends are tightly connected by braze-welded structure, compared in existing stimulator encapsulation technology, all-metal shell is using Laser seal welding, ceramics or glass and metallic combination shell using by the way of sealant, encapsulating structure provided by the utility model, which realizes, to be fully sealed, reliability is higher, long service life is able to achieve external charging, is able to achieve the micromation of stimulator structure.
Description
Technical field
The utility model relates to implantable nerves to stimulate field, and in particular to a kind of encapsulation knot of embedded nerve stimulator
Structure.
Background technique
Nerve stimulator be using electro photoluminescence come therapeutic agent intractable epilepsy, depression, pains and other diseases it is implantable
Formula device can obviously improve patient symptom using nerve stimulation art to assist in the treatment of.Known implanted mind stimulator system is logical
It often include impulse generator, extension lead and the electrode to implant and external control device etc..Impulse generator issues
Signal by feed through connector, via extension lead, be transferred to electrode, stimulate target tissue, reach electronic stimulation purpose.
Currently, this neural stimulation system market is widely used.
Chinese patent literature CN106621041A discloses a kind of nerve stimulator system, includes memory, electrode, pulse hair
Raw device, processor and communication module, the part that implants generally comprise: impulse generator, extension lead and electrode, this stimulation
The system part-structure composition that implants is more, needs to occupy larger space in vivo, packaged type is complicated, and it is whole to reduce device
Reliability.
To solve the above-mentioned problems, Chinese patent literature CN105899029A discloses a kind of injectable nerve stimulator
Encapsulating structure, by by aerial coil, ferrite, anode electrode, cathode electrode, lead, circuit board, element pasted on surface, weldering
Tin and sealant are all integrated into the mode of enclosure interior, solve the problems, such as to take up space in vivo larger, but it passes through very
Sky effect, will can not achieve the security seal of nerve stimulator with the mode that sealant protects inside nerve stimulator,
It still remains body fluid and enters the risk for leading to circuit board cisco unity malfunction, cannot be used for a long time in human body.In addition, the patent
Document also discloses a kind of packaging method of injectable nerve stimulator, but it passes through vacuum action for uncured sealant
In suction casing, after the intracorporal ferrite for being wound with aerial coil of shell and circuit board are surrounded completely, the step of curing sealant
Rapid complicated and realization difficulty is big.
As it can be seen that at present the system structure of nerve stimulator is need to be improved, it is how excellent on the basis of simplied system structure
Change signal transmission and stimulation mode, the nerve stimulator for producing more secure and reliable becomes current technology problem.
Utility model content
For this purpose, the utility model embodiment proposes a kind of encapsulating structure of embedded nerve stimulator, to solve existing skill
The encapsulating structure composition of nerve stimulator is more in art, and the larger or sealing reliability that takes up space in vivo is not high, cannot be chronically implanted
The problem of.
According in a first aspect, the utility model embodiment provides a kind of encapsulating structure of embedded nerve stimulator, including
Shell and the electronic element assembly for being disposed in the housing and being able to achieve nerve stimulator function, the shell include having biology
Insulating sleeve, anode electrode and the cathode electrode of compatibility, the anode electrode and cathode electrode are respectively arranged on the insulation sleeve
Cylinder both ends and by braze-welded structure sealed connection.
Optionally, the anode electrode and cathode electrode are the metal end for being packaged in the insulating sleeve both ends, described
Two connecting pins of insulating sleeve and the connection of the metal end at both ends are equipped with metalization layer, the metalization layer and the gold
Belong to end cap to connect by the braze-welded structure.
Optionally, the insulating sleeve is made of glass or ceramic material.
Optionally, the electronic element assembly includes induction coil, circuit board, capacitor, connecting wire, wherein
The circuit board has the circuit for realizing stimulator function, and the capacity arrangement is on circuit boards；
The connecting wire include connect the circuit board and both ends anode electrode and cathode electrode first connection lead
The third of line, the second connecting wire for connecting the circuit board and the capacitor and the connection capacitor and the induction coil
Connecting wire.
Optionally, further include interior shelf, be used to support and place the electronic element assembly.
Optionally, the joint form of the anode electrode and the cathode electrode and the insulating sleeve is at least one
The banjo fixing butt jointing of broken line.
Optionally, the material of the metalization layer include have biocompatibility Ti, Nb, Au, Pt metal simple-substance or its
Compound.
Optionally, the material of the metal end include have biocompatibility Ti, Nb, Au, Pt metal simple-substance or its
Compound.
Compared with prior art, the utility model has the advantages that
1, the encapsulating structure of embedded nerve stimulator provided by the utility model embodiment, by that will realize nerve thorn
The electronic element assembly for swashing device function is integrated into enclosure interior, simplifies nerve stimulator structures, reduces internal footprint area；
More importantly insulating sleeve and the anode electrode and cathode electrode at both ends are tightly connected by braze-welded structure, compared to existing
In irritating device encapsulation technology, all-metal shell uses sealant using Laser seal welding, ceramics or glass and metallic combination shell
Mode, encapsulating structure provided by the utility model, which realizes, to be fully sealed, and reliability is higher, and long service life is able to achieve
External charging, is able to achieve the micromation of stimulator structure.
2, the encapsulating structure of embedded nerve stimulator provided by the utility model embodiment, by insulating sleeve
Metalization layer is set on two connecting pins, so that the method for welding of insulating sleeve and the metal end at both ends is easier to realize, and
Structure is more stable after welding, is conducive to be further ensured that reliability and service life.
3, the encapsulating structure of embedded nerve stimulator provided by the utility model embodiment, by the shell
Interior shelf is arranged in portion, electronic element assembly is used to support and fixes, so that encapsulating structure internal structure is more stable.
4, the encapsulating structure of embedded nerve stimulator provided by the utility model embodiment, two end electrodes and insulation sleeve
The joint form of cylinder is the banjo fixing butt jointing at least one broken line, and soldering is carried out at the banjo fixing butt jointing and enables to weld
Structure is more stable, is conducive to be further ensured that reliability and service life.
Detailed description of the invention
The utility model embodiment is further illustrated with reference to the accompanying drawings and examples:
Figure 1A is the cross section organigram of the encapsulating structure of the utility model embodiment one.
Figure 1B is the vertical section organigram of the encapsulating structure of the utility model embodiment one.
Fig. 2 is the cross section structural map of the encapsulating structure of the utility model embodiment two.
Fig. 3 is the cage connection schematic diagram of the utility model embodiment two.
1 induction coil in figure；2 capacitors；3 circuit boards；4 insulating sleeves；5 metal ends；6 attachment welds；7 inside supports
Frame；10 perforated metal end caps；11 metal plates；12 attachment welds；14 first connecting wires；15 second connecting wires；16 thirds connect
Connect conducting wire；101 solders；102 metallization faces.
Specific embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described
Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally
Field those of ordinary skill every other embodiment obtained without making creative work belongs to practical
Novel protected range.
It is in the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", " perpendicular
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only
For ease of description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have it is specific
Orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.In addition, term " the
One ", " second ", " third " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
The concrete meaning of language in the present invention.
In addition, as long as technical characteristic involved in the utility model different embodiments disclosed below is each other
Not constituting conflict can be combined with each other.
The present invention will be further described with reference to the accompanying drawings and examples.
Embodiment one:
As shown in Figure 1A, Figure 1B, the present embodiment provides a kind of encapsulating structure of embedded nerve stimulator, the encapsulating structures
Metal end 5, insulating sleeve 4 including both ends and the electronic element assembly inside insulating sleeve 4 and metal end 5.
The metal end 5 at both ends is packaged in the both ends of insulating sleeve respectively as the anode electrode and cathode electrode of the encapsulating structure, leads to
Braze-welded structure sealed connection is crossed, specifically, metalization layer is respectively set on two axial connecting pins of insulating sleeve 4, leads to
It crosses metalization layer and forms braze-welded structure connection with corresponding metal end with soldering processes.Since encapsulating structure needs are implanted to
In human body, therefore, metal end, insulating sleeve of the present embodiment etc. all have implantable biocompatibility.
Above-mentioned technical proposal is the core technology scheme of the utility model embodiment, by that will realize nerve stimulator function
Electronic element assembly be integrated into enclosure interior, simplify nerve stimulator structures, reduce internal footprint area；It is even more important
, insulating sleeve and the anode electrode and cathode electrode at both ends are tightly connected by braze-welded structure, compare existing stimulator
In encapsulation technology, all-metal shell is in such a way that Laser seal welding, ceramics or glass and metallic combination shell use sealant, originally
Encapsulating structure provided by utility model, which realizes, to be fully sealed, and reliability is higher, long service life, is able to achieve external charging,
It is able to achieve the micromation of stimulator structure.
As the preferred embodiment of the utility model, insulating sleeve 4 is that ceramic insulation set is made in implantable ceramic material
Cylinder, the present embodiment is creatively by being arranged metalization layer in two connecting pins of ceramic insulation sleeve, being welded using soldering processes
Two connecting pins and corresponding metal end are connect, being fully sealed of encapsulating structure, zero leakage are realized.It should be noted that this
Utility model is not limited to ceramic insulation sleeve, in other embodiments, according to actual needs, can also be had using implantable
Insulating sleeve made of the glass material of biocompatibility.
As shown in Figure 1A, Figure 1B, the joint form of two metal ends 5 and insulating sleeve 4 is at least two levels
The banjo fixing butt jointing of line and a two horizontal vertical lines of connection.The attachment weld 6 that soldering forms fold-line-shaped is carried out at butt joint, it should
Kind welding structure is stablized, and is further ensured that the leakproofness of encapsulating structure.It should be noted that the utility model is not limited to using two
The joint form of horizontal line and a vertical line according to actual selection needs, can also be had in other embodiments using other
The banjo fixing butt jointing form of broken line.
In the present embodiment, the material for the metalization layer being arranged on two connecting pins of ceramic insulation sleeve, which can be, to be had
The metal simple-substances such as Ti, Nb, Au, Pt of biocompatibility can also be the combined compound of these metal simple-substances at least two.Institute
The material for stating metal end 5 can be the metal simple-substances such as Ti, Nb, Au, Pt with biocompatibility or these metal simple-substances extremely
The compound of few two kinds of compositions.Preferably, in the present embodiment, metal end is identical with material used by metalization layer.
In the present embodiment, 5 structure of metal end at both ends is identical, is the closed end cover structure of both ends of the surface, is encapsulated in
The two sides of ceramic insulation sleeve constitute the internal seal casinghousing with cavity.
The electronic element assembly of the present embodiment includes internal circuit and support construction, and internal circuit and its support construction include
Induction coil 1, capacitor 2, circuit board 3, interior shelf 7 and connecting wire.Circuit board has the electricity for realizing stimulator function
Road, the capacity arrangement is on circuit boards；The connecting wire includes the anode electrode and yin for connecting the circuit board and both ends
First connecting wire 14 of pole electrode, the second connecting wire 15 for connecting the circuit board and the capacitor and the connection electricity
Hold the third connecting wire 16 with the induction coil.The interior shelf 7 is used to support and places the electric component group
Part.
As shown in Figures 2 and 3, the present embodiment additionally provides a kind of encapsulation side of the encapsulating structure of embedded nerve stimulator
Method, specifically includes the following steps:
S1, metalized is carried out to two connecting pins of insulating sleeve 4, does shell encapsulation and prepares；
S2, solder 101 is placed in two connecting pins of insulating sleeve 4；
S3, electronic element assembly is placed in the installation cavity inside the insulating sleeve 4 and is fixed；
S4, insulating sleeve 4 and both ends metal end 5 are connected using soldering processes.
Above-mentioned technical proposal is the core technology scheme of packaging method provided in this embodiment, passes through two to insulating sleeve
A connecting pin carries out metalized, does shell encapsulation and prepares, then using soldering processes connection insulating sleeve and both ends metal
End cap can make the shell realization after encapsulation be fully sealed, zero leakage, in addition, using the work of sealant compared to the prior art
Skill realizes sealing, and the simple process of the present embodiment is easy to accomplish, and sealing effect is good.
As the preferred embodiment of the utility model, in step sl, mechanical metallization, PVD, CVD or plating are utilized
Method metallizes to the both ends connecting pin of ceramic insulation sleeve 4, does shell encapsulation and prepares；Metalization layer is existed only in even
In junction, metallization with a thickness of 3-6 μm；In general, having prime coat and superficial layer；Metallization material is Ti, Nb, Au, Pt
Equal biocompatibility metals simple substance or compound.In the present embodiment, the prime coat is the Ti with a thickness of 50-200 nanometers, institute
The Nb that superficial layer is 3-5 μm is stated, but the utility model is not limited to this, in other embodiments, can also be other can form
Good metalization layer, and realize the metal simple-substance combination of hermetic seal function.In addition, it is necessary to explanation, the utility model
The method for metallising is not limited to aforesaid way, and in other embodiments, according to actual needs, PVD can be magnetic control and splash
It penetrates, vacuum evaporation etc..
In step s 2 and in step S3, circuit board 3 is fixed in interior shelf 7, induction coil 1, capacitor 2 are installed
In interior shelf 7, each section is connected by relationship shown in Figure 1B with the second connecting wire 15 with third connecting wire 16.It puts on
The insulating sleeve 4 of metallization, connection circuit board 3 are drawn out to the connecting wire 15 and 16 of left and right side metal end 5, the company of placement
It connecing and uses solder, solder is annular, is covered on the outermost layer annular surface of insulating sleeve 4, and solder is identical as annular surface shape, with a thickness of
100-200μm；Solder selects gold or other solders with biocompatibility；Assemble both ends end cap 5,10-30 μm of fit-up gap.
In step s 4, the insulating sleeve of soldering processes connection end cap 5 and metallization is utilized；The choosing of soldering processes heating method
Select laser heating or infrared heating；Heating process includes the thawing of the preheating and solder to weld metal zone, and annular joint face is heated
Uniformly, portion other than connected portion cannot be heated to；Solder flows into weld seam using capillarity during heating；Heating is connected to lazy
It is carried out under property gas atmosphere.
Embodiment two:
As shown in Fig. 2, the present embodiment provides a kind of encapsulating structure of implantable nerve stimulator, the encapsulating structure and implementation
The difference of the encapsulating structure of example one is:
One of metal end 5 is the separate structure with perforated metal end cap 10 and metal plate 11.
The present embodiment also provides a kind of packaging method of above-mentioned encapsulating structure, comprising the following steps:
S1, metalized is carried out to two connecting pins of insulating sleeve, does shell encapsulation and prepares；
S2, solder is placed in two connecting pins of insulating sleeve；
S3, metal end and perforated metal end cap and insulating sleeve are assembled, and is connected using soldering processes；
S4, the installation cavity being placed in electronic element assembly from the hole of the perforated metal end cap inside the insulating sleeve
In and it is fixed；
S5, metal plate and perforated metal end cap are welded to connect.
In step sl, using mechanical metallization, PVD, CVD or electric plating method to the both ends connecting pin of insulating sleeve 4
It metallizes, does shell encapsulation and prepare；Metalization layer is existed only in on joint face, metallization with a thickness of 3-6 μm；Generally
, there is prime coat and superficial layer；Metallization material is biocompatibility metals simple substance or the compounds such as Ti, Nb, Au, Pt.
In step s 2, solder is placed in insulating sleeve both ends junction, solder is selected gold or other low-melting had
The solder of biocompatibility, by metal end 5 and perforated metal end cap 10 and 4 fit on of insulating sleeve, fit-up gap 10-30 μ
m；It is fitted into dedicated graphite tooling, is placed in soldering oven and heats.In general, heated protective mode is vacuum protection or lazy in furnace
Property atmosphere.
In step S3 and S4, the shell connected in soldering oven is taken out.Circuit board 3 will be fixed on interior shelf 7
On, induction coil 1, capacitor 2 are mounted in interior shelf 7, are connected each section by pictorial relationships with connecting wire 15,16, are put
Enter in shell.
In step s 5, metal plate 11 and perforated metal end cap 10 are attached；Connection method be laser welding or its
Its connection method；Joint form is banjo fixing butt jointing.
Obviously, the description of above embodiments is only intended to clearly illustrate done citing, and the scope of the utility model is not
It should be limited to above-mentioned specific embodiment.To a person skilled in the art, in the purport for not departing from the utility model or
In the case where substantive characteristics, can extend out to above-mentioned specific embodiment obvious changes or variations, these all in
In the scope of the claims of the utility model.
Claims (9)
1. a kind of encapsulating structure of embedded nerve stimulator, which is characterized in that including shell and be disposed in the housing and energy
Realize that the electronic element assembly of nerve stimulator function, the shell include the insulating sleeve with biocompatibility, anode electricity
Pole and cathode electrode, the anode electrode and cathode electrode be respectively arranged on the both ends of the insulating sleeve and by braze-welded structure it is close
Envelope connection.
2. the encapsulating structure of embedded nerve stimulator according to claim 1, which is characterized in that the anode electrode and
Cathode electrode is the metal end for being packaged in the insulating sleeve both ends, the metal end company of the insulating sleeve and both ends
Two connecting pins connect are equipped with metalization layer, and the metalization layer is connect with the metal end by the braze-welded structure.
3. the encapsulating structure of embedded nerve stimulator according to claim 1, which is characterized in that the insulating sleeve by
Glass or ceramic material are made.
4. the encapsulating structure of embedded nerve stimulator according to claim 1, which is characterized in that the electric component group
Part includes induction coil, circuit board, capacitor, connecting wire, wherein
The circuit board has the circuit for realizing stimulator function, and the capacity arrangement is on circuit boards；
The connecting wire includes the first connecting wire for connecting the anode electrode and cathode electrode of the circuit board and both ends, connects
The second connecting wire and the connection capacitor for connecing the circuit board and the capacitor are connected with the third of the induction coil
Conducting wire.
5. the encapsulating structure of embedded nerve stimulator according to claim 4, which is characterized in that further include internal support
Frame is used to support and places the electronic element assembly.
6. the encapsulating structure of embedded nerve stimulator according to claim 1, which is characterized in that the anode electrode and
The joint form of the cathode electrode and the insulating sleeve is the banjo fixing butt jointing with broken line.
7. the encapsulating structure of embedded nerve stimulator according to claim 2, which is characterized in that the metalization layer
Material includes Ti, Nb, Au, Pt metal simple-substance or its compound with biocompatibility.
8. the encapsulating structure of embedded nerve stimulator according to claim 2, which is characterized in that the metal end
Material includes Ti, Nb, Au, Pt metal simple-substance or its compound with biocompatibility.
9. the encapsulating structure of embedded nerve stimulator according to claim 2, which is characterized in that two metal ends
One of lid includes perforated metal end cap and metal plate, and the metal plate is adapted to the hole of the perforated metal end cap and passes through weldering
It connects in succession.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820639951.7U CN209123181U (en) | 2018-04-28 | 2018-04-28 | A kind of encapsulating structure of embedded nerve stimulator |
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| CN201820639951.7U CN209123181U (en) | 2018-04-28 | 2018-04-28 | A kind of encapsulating structure of embedded nerve stimulator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111588985A (en) * | 2020-05-27 | 2020-08-28 | 微智医疗器械有限公司 | Implant device and method of assembling the same |
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2018
- 2018-04-28 CN CN201820639951.7U patent/CN209123181U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111588985A (en) * | 2020-05-27 | 2020-08-28 | 微智医疗器械有限公司 | Implant device and method of assembling the same |
| CN111588985B (en) * | 2020-05-27 | 2021-02-19 | 微智医疗器械有限公司 | Implant device and method of assembling the same |
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