CN102255183B - Extension lead wire of implantable neural stimulation system - Google Patents
Extension lead wire of implantable neural stimulation system Download PDFInfo
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- CN102255183B CN102255183B CN201110105062.5A CN201110105062A CN102255183B CN 102255183 B CN102255183 B CN 102255183B CN 201110105062 A CN201110105062 A CN 201110105062A CN 102255183 B CN102255183 B CN 102255183B
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- extension lead
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- release portion
- stress release
- thin wire
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Abstract
The invention discloses an extension lead wire of an implantable neural stimulation system. The extension lead wire comprises three parts consisting of a plug, a connection wire and a socket. One end of a section of ring-wound thin lead wire is connected with a spiral lead wire in the connection wire. The other end of the ring-wound thin lead wire is connected with a metal member in the socket. The extension lead wire is manufactured by using the ring-wound thin lead wire, thus, the fatigue resistance performance and the integral reliability of the extension lead wire can be improved.
Description
Technical field
The present invention relates to a kind of manufacturing technology for implantable medical devices, especially the extension lead of implantable nerve stimulating system.
Background technology
That the mode of implantable nerve stimulating system by electrostimulation come is excited, suppress or regulate nervous system conduction, thereby reaches the result for the treatment of of recovering or improving function of human body running.Implantable nerve irritation therapy has been proved plants maladjusted nervous system disease to more than 20 and has definite curative effect.Compare with traditional pharmaceutical methods and operation damage method, implantable nerve irritation therapy safety is reversible, is used just more and more clinically.Implantable nerve stimulating system, according to the difference of stimulation location, can be subdivided into brain depth stimulator, vagus nerve stimulator, SCS device, peripheral nerve stimulation device etc.
Implantable nerve stimulating system is generally by pulse generator and electrode catheter two parts, or pulse generator, extension lead and electrode catheter three part compositions.The stimulus signal that pulse generator produces is by extension lead, electrode catheter, and final arrival stimulates target spot, excites nerve, and produces the effect for the treatment of.
Take common brain depth stimulator as example, the pulse generator of this system is placed on the subcutaneous of people's chest, and electrode catheter is placed on people's head, and the electrical connection between the two completes by extension lead.All subcutaneous in people of extension lead entirety, it starts from people's ear, extends to chest along neck.The activity of neck, chest muscle can stretch, compresses, bending, reverse extension lead.Especially neck can move significantly, and this makes in the ambient stress of extension lead in very severe.Reach the several years even in the useful life periods of more than ten years at stimulator, how to guarantee that the connection reliability of the mechanical property of extension lead and electric property, raising stimulator is a very important problem in the design of extension lead, manufacture process.
The extension lead of brain depth stimulator forms (referring to Fig. 1) by plug, connecting line, socket three parts.In the brain depth stimulator operation completing between more than ten years in the past, because the operation inefficacy causing that goes wrong that is connected between connecting line and the socket of extension lead has occurred a lot of.Connected mode between existing connecting line and socket is as shown in Figure 2: almost stretching thin wire couples together the metalwork in the helix in connecting line and socket.In such connected mode, there is slight stretching or bending in extension lead, even a little torsion all makes the junction at thin wire two ends produce larger stress, in long-term implantation process, be easy to cause the tie point generation low-cycle fatigue fracture at thin wire two ends.
Summary of the invention
In view of the above-mentioned defect of prior art, the object of the present invention is to provide a kind of extension lead of improved implantable nerve stimulating system, to guarantee mechanical property and the electric property of extension lead, improve the reliability connecting.
A kind of extension lead for implantable medical devices, comprise the first link, connecting line and the second link, described connecting line is made up of multi-cavity insulated tube and each intraluminal helix, it is characterized in that, also comprise many thin wires, each in described many thin wires has:
Close end, it forms and is electrically connected with described helix,
Distal portion, it forms and is electrically connected with the metalwork in described the second link;
And at least one in described many thin wires also have:
Stress Release portion, it is arranged between described close end and described distal portion, for discharging the stress of described extension lead inside.
Preferably, described Stress Release portion be shaped as ring-type.
Preferably, described Stress Release portion be shaped as the helical form forming around the axis of this thin wire.
Preferably, described Stress Release portion be shaped as the helical form tangent with the axis of this thin wire.
Preferably, described Stress Release portion be shaped as Ω shape.
Preferably, described Stress Release portion be shaped as 8-shaped shape.
Preferably, described Stress Release portion be shaped as broken line shape.
Preferably, described Stress Release portion be shaped as S shape.
Preferably, described the first link is to form the plug being electrically connected with described implantable medical devices, and described the second link is socket.
In the time adopting connected mode of the present invention, as long as the stretching that connecting line occurs or bending or torsion behavior disappear the ring stretching that thin wire is wound with, very little stress is not born or only born in the junction at thin wire two ends.Only have after ring that thin wire is wound with disappears, thin wire two ends just start to bear larger stress.In addition, can also make in the normal scope of activities of patient by the form (including but not limited to around the size of ring or around the number of times encircling) of adjusting around ring, the ring that thin wire is wound with can not disappear, thereby greatly improves anti-fatigue ability and the reliability of extension lead.
Accompanying drawing explanation
Fig. 1 is the overall diagram of the extension lead of implantable nerve stimulating system;
Fig. 2 is the connected mode schematic diagram of extension lead of the prior art;
Fig. 3 is the connection diagram according to extension lead of the present invention;
Fig. 4 is the shape schematic diagram of thin wire according to the present invention around ring.
In figure, the implication of each mark representative is:
1. plug, 2. connecting line, 3. socket, 4. four chamber silicone rubber tubes, 5. helix, 6. thin wire, 7. metalwork.
Embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention and manufacture process are described:
Figure 1 shows that a kind of extension lead for implantable nerve stimulating system, it is made up of plug (1), connecting line (2) and socket (3) three parts.
Figure 2 shows that the connected mode of existing connecting line and socket.Connecting line between plug and socket for example, is made up of the spiral conducting line (5) in insulated tube (4) (four chamber silicone rubber tubes) and the pipe of multi-cavity, socket is made up of the insulator (not shown in FIG.) of metalwork (7) (connecting terminal) and separation, fixing metal part, between helix and metalwork, connects with the thin wire (6) that is coated with insulating layer coating.In existing connected mode, thin wire is substantially in stretching or intimate stretching state.Like this, when connecting line occurs slightly when bending, can produce larger stress in the junction at thin wire two ends.
Figure 3 shows that according to an embodiment of the present, wherein the proximal end of thin wire is connected with plug, and distal end is connected with the metalwork in socket, and centre is wound with one for discharging the annulus of stress, is shaped as the helical form tangent with the axis of this thin wire.
Shown in Fig. 4 for thin wire for discharging the embodiment of various distortion of part of stress.Wherein, thin wire middle part shown in (a) in Fig. 4 is formed as the helical form tangent with its axis, (b) the thin wire middle part shown in is formed as Ω shape, (c) the thin wire middle part shown in is formed as 8-shaped shape, (d) thin wire shown in middle part is formed as the broken line of S shape, and the thin wire middle part shown in (e) is formed as the helical form forming around the axis of this thin wire.
Further, described thin wire around loop type can be plane can also be space.
Further, described thin wire can be the improvement on this basis of any one form in a shown in Fig. 4, b, c, d, e around loop type, for example: repeatedly around the ring of identical or different form, annulus is become to polygonal circle.
Further, each thin wire in extension lead can adopt identical around loop type, or different from loop type.
Extension lead in various embodiment can adopt any applicable mode of the prior art to manufacture moulding above.Take ring-type as example, its a kind of manufacture method that is easy to realize is that thin wire is wound with one circuit on the pole of suitable diameter, then pumps pole.
The foregoing is only several specific embodiment of the present invention, above embodiment is only for explaining and unrestricted claim scope of the present invention technical scheme of the present invention and inventive concept.All technical staff in the art on inventive concept of the present invention basis in conjunction with prior art, by the available other technologies scheme of logic analysis, reasoning or limited experiment, within also should being considered to drop on claim protection range of the present invention.
Claims (9)
1. the extension lead for implantable medical devices, comprise the first link, connecting line and the second link, described connecting line is made up of multi-cavity insulated tube and each intraluminal helix, it is characterized in that, also comprise many thin wires, each in described many thin wires has:
Close end, it forms and is electrically connected with described helix,
Distal portion, it forms and is electrically connected with the metalwork in described the second link;
And at least one in described many thin wires also have:
Stress Release portion, it is arranged between described close end and described distal portion, for discharging the stress of described extension lead inside; Make in the normal scope of activities of patient, very little stress is not born or only born in the junction at thin wire two ends, thereby improve anti-fatigue ability and the reliability of extension lead.
2. extension lead according to claim 1, is characterized in that, described Stress Release portion is shaped as ring-type.
3. extension lead according to claim 2, is characterized in that, described Stress Release portion is shaped as the helical form forming around the axis of this thin wire.
4. extension lead according to claim 2, is characterized in that, described Stress Release portion is shaped as the helical form tangent with the axis of this thin wire.
5. extension lead according to claim 2, is characterized in that, described Stress Release portion is shaped as Ω shape.
6. extension lead according to claim 2, is characterized in that, described Stress Release portion is shaped as 8-shaped shape.
7. extension lead according to claim 1, is characterized in that, described Stress Release portion is shaped as broken line shape.
8. extension lead according to claim 7, is characterized in that, described Stress Release portion is shaped as S shape.
9. according to the extension lead described in aforementioned arbitrary claim, it is characterized in that, described the first link is to form the plug being electrically connected with described implantable medical devices, and described the second link is socket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110105062.5A CN102255183B (en) | 2011-04-20 | 2011-04-20 | Extension lead wire of implantable neural stimulation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110105062.5A CN102255183B (en) | 2011-04-20 | 2011-04-20 | Extension lead wire of implantable neural stimulation system |
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| Publication Number | Publication Date |
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| CN102255183A CN102255183A (en) | 2011-11-23 |
| CN102255183B true CN102255183B (en) | 2014-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110105062.5A Active CN102255183B (en) | 2011-04-20 | 2011-04-20 | Extension lead wire of implantable neural stimulation system |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2676698B1 (en) * | 2012-06-18 | 2014-09-03 | BIOTRONIK SE & Co. KG | Adapter for mechanically and electrically connecting an implantable electrode to at least one test terminal contact |
Citations (6)
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|---|---|---|---|---|
| CN2887336Y (en) * | 2006-03-10 | 2007-04-11 | 清华大学 | Electrode catheter of implanted nerve stimulator |
| CN201469401U (en) * | 2009-08-21 | 2010-05-19 | 刘小青 | Spiral renal-artery-around renal sympathetic nerve radio-frequency ablation electrode catheter |
| CN201643408U (en) * | 2010-03-26 | 2010-11-24 | 苏州鼎迈医疗科技有限公司 | Extended conducting wire of implanted nerve electric stimulating system |
| CN201643409U (en) * | 2010-04-02 | 2010-11-24 | 苏州鼎迈医疗科技有限公司 | Extension lead used for implantable neural electrical simulation system |
| US7904161B2 (en) * | 2001-10-22 | 2011-03-08 | Oscor Inc. | Lead adaptor having low resistance conductors and/or encapsulated housing |
| US8391982B2 (en) * | 2008-01-31 | 2013-03-05 | Boston Scientific Neuromodulation Corporation | Lead with lead stiffener for implantable electrical stimulation systems and methods of making and using |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5554349B2 (en) * | 2009-02-06 | 2014-07-23 | メド−エル エレクトロメディジニシェ ゲラテ ゲーエムベーハー | Embedded electrode with variable mechanical adjustment wiring |
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2011
- 2011-04-20 CN CN201110105062.5A patent/CN102255183B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7904161B2 (en) * | 2001-10-22 | 2011-03-08 | Oscor Inc. | Lead adaptor having low resistance conductors and/or encapsulated housing |
| CN2887336Y (en) * | 2006-03-10 | 2007-04-11 | 清华大学 | Electrode catheter of implanted nerve stimulator |
| US8391982B2 (en) * | 2008-01-31 | 2013-03-05 | Boston Scientific Neuromodulation Corporation | Lead with lead stiffener for implantable electrical stimulation systems and methods of making and using |
| CN201469401U (en) * | 2009-08-21 | 2010-05-19 | 刘小青 | Spiral renal-artery-around renal sympathetic nerve radio-frequency ablation electrode catheter |
| CN201643408U (en) * | 2010-03-26 | 2010-11-24 | 苏州鼎迈医疗科技有限公司 | Extended conducting wire of implanted nerve electric stimulating system |
| CN201643409U (en) * | 2010-04-02 | 2010-11-24 | 苏州鼎迈医疗科技有限公司 | Extension lead used for implantable neural electrical simulation system |
Non-Patent Citations (1)
| Title |
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| 李路明，郝红伟.植入式神经刺激器的限制与发展趋势.《中国医疗器械杂志》.2009,第33卷(第2期),107-111. * |
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| CN102255183A (en) | 2011-11-23 |
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