CN102198308A - Extension lead of implanted nervous electrical stimulation system - Google Patents
Extension lead of implanted nervous electrical stimulation system Download PDFInfo
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- CN102198308A CN102198308A CN2010101324438A CN201010132443A CN102198308A CN 102198308 A CN102198308 A CN 102198308A CN 2010101324438 A CN2010101324438 A CN 2010101324438A CN 201010132443 A CN201010132443 A CN 201010132443A CN 102198308 A CN102198308 A CN 102198308A
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- connecting ring
- extension wire
- insulator
- inside conductor
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Abstract
The invention provides an extension lead of an implanted nervous electrical stimulation system. The extension lead comprises a plurality of inner leads, an insulator and a plurality of connecting rings, wherein the inner leads are coated by the insulator. The extension lead is characterized in that a plurality of connection through holes are formed in each connecting ring, one connection through hole in each connecting ring is used for being connected with one inner lead, and other connection through holes in each connecting ring are respectively used for other inner leads to pass through. According to the extension lead of the implanted nervous electrical stimulation system provided by the invention, the positioning stability and accuracy of the inner leads in the injection molding process of the insulator can be improved, and the capability of resisting compression deformation of the connecting rings in the assembling process can be improved.
Description
Technical field
The present invention relates to a kind of implantable nerve electric stimulation, particularly relate to the extension wire of implantable nerve electric stimulation.
Background technology
Nerve electric stimulation has important effect in maladjusted nervous system treatment and nerve injury rehabilitation.The implantable nerve electric stimulation by in human body such as nervus motorius, sensorineural specific neural place implant electrode, discharge high-frequency electrical stimulation, stimulating, thereby make function of human body return to the state of normal operation for specific nerve.At present, the implantable nerve electric stimulation mainly comprises implanted brain deep electricity irritation (DBS), and the implanted cortex stimulates (CNS), implanted spinal cord stimulation trial system (SCS), implanted sacral nerves electric stimulation (SNS), implanted vagus nerve electric stimulation (VNS) or the like.
Known implantable nerve electric stimulation mainly comprises pulse generator, electrode, extension wire and control device usually.Wherein, pulse generator is connected with extension wire, extension wire and then be connected to electrode again, thereby with burst transmissions that pulse generator produced to electrode, so that nerve is carried out electricity irritation.
The extension wire of known implantable nerve electric stimulation mainly comprises a plurality of inside conductors, corresponding a plurality of connecting rings and insulator.Connecting ring is the thin-walled circulus.Thin-walled at connecting ring is connected with corresponding inside conductor by the mode of for example welding.The inside conductor that bigger inner space then is used for other in the connecting ring passes.
Each inside conductor respectively with corresponding connecting ring be linked and packed finish after, will form the insulator that coats inside conductor by injection molding process.In injection molding process, can produce bigger active force to inside conductor when injecting insulating material.Because inside conductor lacks positioning means in the bigger inner space of connecting ring, so under the influence of the active force that in injection molding process, is produced, inside conductor can produce lateral displacement, and then increases the stress of pullling of pad, even may cause inside conductor to separate with connecting ring.Also may cause different inside conductors to be in contact with one another in addition, thereby increase short risk between the inside conductor.
In addition, pulse generator need be connected with extension wire, is using screw extension wire to be connected under the situation of pulse generator, and screw can produce roughly contention effect power radially on the outer surface of connecting ring.Connecting ring influences the reliability of signal of telecommunication transmission because its thin-wall construction is easy to generate distortion, thereby causes loose contact under this contention effect power.
Summary of the invention
Inside conductor is subjected to displacement in the insulator forming process and connecting ring produces the problem of distortion in using the screw assembling process in order to overcome, and the invention provides a kind of extension wire of implantable nerve electric stimulation.
According to the extension wire of a kind of implantable nerve electric stimulation of the present invention, described extension wire comprises: a plurality of inside conductors; Insulator, described insulator coats described inside conductor; A plurality of connecting rings; It is characterized in that: be provided with a plurality of connection vias in each described connecting ring, in each connecting ring one connects via and is used for being connected with an inside conductor, and the inside conductor that other connection via is respectively applied for other in each connecting ring passes.
Further, described connecting ring can be cylindrical shape, and described connection via extends along the axial direction of described connecting ring.
Further, also can be provided with insulator bore in the described connecting ring.Described insulator bore is used for admitting insulating material at the injection molding process of insulator, makes formed insulator run through each connecting ring, thereby plays the effect that connects each connecting ring.
Further, described connection via can be to arrange about the centrosymmetric mode of described connecting ring.
Further, described insulated hole can be arranged on the central part of described connecting ring.
Further, described connection via and/or described insulated hole can be to arrange about the asymmetrical mode in described connecting ring center.
According to the extension wire of implantable nerve electric stimulation of the present invention, can improve inside conductor localized stability and accuracy in the insulator injection molding process, can also improve connecting ring anti-extrusion deformation ability in assembling process.
Description of drawings
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described in further detail.In the accompanying drawing:
Fig. 1 is the sketch map of extension wire of the implantable nerve electric stimulation of prior art;
Fig. 2 is the axonometric chart according to the connecting ring of the extension wire of implantable nerve electric stimulation of the present invention;
Fig. 3 is the assembling sketch map according to connecting ring and inside conductor in the extension wire of implantable nerve electric stimulation of the present invention;
Fig. 4 is the cutaway view according to the extension wire of implantable nerve electric stimulation of the present invention;
Reference numeral: extension wire 1, inside conductor 2, insulator 3, connecting ring 4 connects via 5, insulator bore 6.
The specific embodiment
Fig. 1 is the sketch map of extension wire of the implantable nerve electric stimulation of prior art.With reference to Fig. 1, the extension wire 1 of implantable nerve electric stimulation mainly comprises inside conductor 2, insulator 3 and connecting ring 4.
Wherein, the quantity of inside conductor 2 and connecting ring 4 can be provided with as required.For example, in extension wire 1, three inside conductors 2 are set, and three connecting rings 4 correspondingly are set.Each inside conductor 2 is connected with corresponding connecting ring 4 respectively.
Connecting ring 4 is the thin-walled circulus.Thin-walled at connecting ring 4 is connected with corresponding inside conductor 2 by modes such as for example welding.The inside conductor 2 that bigger inner space then is used for other in the connecting ring 4 passes.
In extension wire 1, be formed with the insulator 3 that coats inside conductor 2 by injection mo(u)lding.
Particularly, each inside conductor 2 respectively with corresponding connecting ring 4 be linked and packed finish after, can form the insulator 3 that coats inside conductor 2 by injection molding process.Yet, in injection molding process, can produce bigger active force to inside conductor 2 when injecting insulating material.Because inside conductor 2 lacks positioning means in the bigger inner space of connecting ring 4, so under the influence of the active force that is produced in injection molding process, the inside conductor 2 that passes this inner space can produce lateral displacement.Thus, even can cause different inside conductor 2 to be in contact with one another, electrically contact thereby formation is undesirable between inside conductor 2.
In addition, pulse generator need be connected with extension wire 2 in the implantable nerve electric stimulation, using screw extension wire 2 to be connected under the situation of pulse generator, screw can produce roughly contention effect power radially on the outer surface of connecting ring 4.Connecting ring 4 influences the reliability of signal of telecommunication transmission because its thin-wall construction is easy to generate distortion, thereby causes loose contact under this contention effect power.
In order to overcome the above problems, the invention provides a kind of extension wire of implantable nerve electric stimulation.
Fig. 2 is the axonometric chart according to the connecting ring 4 of the extension wire 2 of implantable nerve electric stimulation of the present invention.With reference to Fig. 2, connecting ring 4 is the roughly shape of solid cylinder, and it has bigger rigidity compared to the thin-walled circulus.Thereby, using screw extension wire 2 to be connected under the situation of pulse generator, can not produce distortion on the outer surface of connecting ring 4 owing to the contention effect power that screw produces roughly radially.
With further reference to Fig. 2, in axial direction be provided with connection via 5 and insulator bore 6 in the connecting ring 4.Wherein, the quantity of connection via 5 can be provided with according to the quantity of inside conductor 2 in the extension wire 1.
In embodiment shown in Figure 2, each connects via 5 to arrange 6 central parts that are arranged on connecting ring 4 of insulator bore about connecting ring 4 centrosymmetric modes.But connecting via 5 and/or insulator bore 6 can otherwise arrange, for example arranges with asymmetric manner, thereby can further reduce the diameter of connecting ring 4.
Fig. 3 is the assembling sketch map according to connecting ring and inside conductor in the extension wire of implantable nerve electric stimulation of the present invention.In embodiment shown in Figure 3, be provided with four and connect via 5.
With reference to Fig. 3, a connection via 5 in each connecting ring 4 is used for being connected with corresponding inside conductor 2 by modes such as for example welding, and the inside conductor 2 that other connection via 5 in this connecting ring 4 then is respectively applied for other passes.
That is, each inside conductor 2 passes connection via 5 separately, rather than passes the inner space of connecting ring as prior art together.Thereby connecting via 5 can play positioning action to the inside conductor 2 that passes.Thus, even under the influence of the active force that is produced in the injection molding process of insulator 3, inside conductor 2 can not produce displacement yet.
As can be known, the effect that connection via 5 according to the present invention has two aspects is used to connect inside conductor 2 on the one hand, is used on the other hand the inside conductor 2 that passes is positioned.
Fig. 4 is the cutaway view according to the extension wire of implantable nerve electric stimulation of the present invention.With reference to Fig. 4, it clearly show that inside conductor 2, connecting ring 4 and insulator 3 after the assembling molding, and wherein each inside conductor 2 is located reliably by connecting via 5.
With further reference to Fig. 4, wherein insulator bore 6 is used for admitting insulating material at the injection molding process of insulator 3, makes formed insulator 3 run through each connecting ring 4, thereby plays the effect that connects each connecting ring 4.
Wherein, insulating material can adopt the insulant of bio-compatible, for example polyurethane (polyurethane), Merlon (polycarbonate) etc.
More than the specific embodiment of the present invention is described.Be illustrative for description of the invention herein, thereby scope of the present invention should not be limited to the above-mentioned specific embodiment.It will be apparent to one skilled in the art that under the situation that does not break away from purport of the present invention or substitutive characteristics, can carry out other distortion or change the above-mentioned specific embodiment.
Claims (7)
1. the extension wire of an implantable nerve electric stimulation, described extension wire comprises:
A plurality of inside conductors;
Insulator, described insulator coats described inside conductor;
A plurality of connecting rings;
It is characterized in that:
Be provided with a plurality of connection vias in each described connecting ring, in each connecting ring one connects via and is used for being connected with an inside conductor, and the inside conductor that other connection via is respectively applied for other in each connecting ring passes.
2. extension wire according to claim 1, wherein, described connecting ring is a cylindrical shape, described connection via extends along the axial direction of described connecting ring.
3. extension wire according to claim 1 and 2 wherein, also is provided with insulator bore in the described connecting ring.
4. extension wire according to claim 1 and 2, wherein, described connection via is to arrange about the centrosymmetric mode of described connecting ring.
5. extension wire according to claim 3, wherein, described insulated hole is arranged on the central part of described connecting ring.
6. extension wire according to claim 1 and 2, wherein, described connection via is to arrange about the asymmetrical mode in described connecting ring center.
7. extension wire according to claim 3, wherein, described connection via and described insulated hole are to arrange about the asymmetrical mode in described connecting ring center.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101324438A CN102198308A (en) | 2010-03-26 | 2010-03-26 | Extension lead of implanted nervous electrical stimulation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101324438A CN102198308A (en) | 2010-03-26 | 2010-03-26 | Extension lead of implanted nervous electrical stimulation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102198308A true CN102198308A (en) | 2011-09-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101324438A Pending CN102198308A (en) | 2010-03-26 | 2010-03-26 | Extension lead of implanted nervous electrical stimulation system |
Country Status (1)
| Country | Link |
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| CN (1) | CN102198308A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103845804A (en) * | 2012-12-07 | 2014-06-11 | 苏州景昱医疗器械有限公司 | Bending-resistant extension wire and implantable medical system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2232257Y (en) * | 1995-06-16 | 1996-08-07 | 中国人民解放军南京军区南京总医院 | Implanted brain deep location electrode and its clamping apparatus |
| US5957970A (en) * | 1998-02-18 | 1999-09-28 | Medtronic, Inc. | Method of fabricating a medical electrical lead |
| FR2875705A1 (en) * | 2004-09-30 | 2006-03-31 | Ela Medical Sa | Lead for active implantable medical device, has outer sheath made of less friction coefficient material and covering core made of silicone material, where core has longitudinal recesses forming stress absorption unit, at its outer surface |
| US20060129203A1 (en) * | 2004-12-10 | 2006-06-15 | Scimed Life Systems, Inc. | Methods and kits for delivering cortical electrode leads into patient's head |
| 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 |
-
2010
- 2010-03-26 CN CN2010101324438A patent/CN102198308A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2232257Y (en) * | 1995-06-16 | 1996-08-07 | 中国人民解放军南京军区南京总医院 | Implanted brain deep location electrode and its clamping apparatus |
| US5957970A (en) * | 1998-02-18 | 1999-09-28 | Medtronic, Inc. | Method of fabricating a medical electrical lead |
| FR2875705A1 (en) * | 2004-09-30 | 2006-03-31 | Ela Medical Sa | Lead for active implantable medical device, has outer sheath made of less friction coefficient material and covering core made of silicone material, where core has longitudinal recesses forming stress absorption unit, at its outer surface |
| US20060129203A1 (en) * | 2004-12-10 | 2006-06-15 | Scimed Life Systems, Inc. | Methods and kits for delivering cortical electrode leads into patient's head |
| 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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103845804A (en) * | 2012-12-07 | 2014-06-11 | 苏州景昱医疗器械有限公司 | Bending-resistant extension wire and implantable medical system |
| CN103845804B (en) * | 2012-12-07 | 2016-07-13 | 苏州景昱医疗器械有限公司 | A kind of extension wire of resistance to bending and Implanted medical system |
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Owner name: SUZHOU JINGYU MEDICAL EQUIPMENT CO., LTD. Free format text: FORMER OWNER: DINGMAI MEDICAL TECHNOLOGY (SUZHOU) CO., LTD. Effective date: 20120524 |
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Effective date of registration: 20120524 Address after: Xinghu Street Industrial Park of Suzhou city in Jiangsu province 215123 No. 218 BioBAY C16 Applicant after: Suzhou Jingyu Medical Equipment Co.,Ltd. Address before: Xinghu Street Industrial Park of Suzhou city in Jiangsu province 215123 No. 218 BioBAY C16 Applicant before: Dingwan Medical Technology (Suzhou) Co., Ltd. |
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Application publication date: 20110928 |