CN114055705A - 一种可植入医疗电极导管的制造方法 - Google Patents

一种可植入医疗电极导管的制造方法 Download PDF

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CN114055705A
CN114055705A CN202010765087.7A CN202010765087A CN114055705A CN 114055705 A CN114055705 A CN 114055705A CN 202010765087 A CN202010765087 A CN 202010765087A CN 114055705 A CN114055705 A CN 114055705A
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何玉平
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Xi'an Dunbo Medical Equipment Co ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/1418Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure
    • B29C45/14221Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure by tools, e.g. cutting means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/1418Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure
    • B29C45/14221Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure by tools, e.g. cutting means
    • B29C2045/14229Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure by tools, e.g. cutting means deforming wire-like articles

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Abstract

本发明公开了一种可植入医疗电极导管的制造方法,包括将环形电极和适当长度的导线的一端在环形电极内壁焊,N个电极触点则焊接N组环形电极;将多腔管一端在一定长度上剥去一层外皮,漏出容纳导线的线槽,剥后直径以环形电极可以套入为准;将定位环套在多腔管上,然后将导线套在多腔管上;将上述步骤三中获得的结构装入模具,确保环形电极和定位环压在定位压块和弹性体组成的定位压块之下,且环形电极和定位环相对于定位压块左右两侧漏出距离一致;将组装好的模具从左至右,每调整到位一个环形电极,则在将下模下部锁紧压块向上压,再用锁紧螺母将定位压块锁紧;待定位环和所有环形电极均定位完成后,将上模与下模合模,最后进行注塑。

Description

一种可植入医疗电极导管的制造方法
技术领域
本发明涉及电极导管的制造工艺技术领域,具体为一种可植入医疗电极导管的制造方法。
背景技术
很多类型的有源可植入装置被用来治疗各种疾病,例如心脏起搏器,心脏除颤仪,脑起搏器等装置被用来治疗心律失常所致的心脏功能障碍,帕金森症,癫痫等疾病。
随着医疗技术发展,有源可植入医疗装置也被用来以治疗更多的疾病,例如膀胱功能障碍、呼吸功能障碍和高血压。有源可植入医疗装置一般包括可植入脉冲发生器和可植入电极导线,可植入脉冲发生器由钛合金外壳、内部电路和外部连接器构成,治疗信号由内部电路发出预先设定好的电信号,经外部连接器导出,通过电极导线传送至目标靶区,进而实施精确治疗。同时,电极导线可以将设备对人体的感知信号传回脉冲发生器,用以判断机体功能状态,再根据具体状态进行相应的治疗,治疗过程形成闭环。
电极导线的近端与脉冲发生器通过连接器相连,电极导管上的导电单元采用铂铱材料或不锈钢制成的环形电极,与连接器中的线簧接触以导通电信号,导管内部的导线与环形电极在内壁焊接,将信号引出至导管远端,再将铂铱材料制成的电极触点与导线相焊接,最终通过电极触点与人体神经或者肌肉接触,将治疗信号作用于靶区。
电极导管作为易损件,且电极导管与脉冲发生器连接器相连部分作为治疗信号传输的关键环节,其一致性和可靠性尤为重要。
电极导管的近端和远端的加工工艺始终是个技术难点,尤其电极触点越多,电极的定位越复杂,加工操作难度越大。
因此,设计一种采用新的定位方式,实现了电极导线近端简单可靠注塑的可植入医疗电极导管的制造方法显得非常必要。
发明内容
本发明的目的在于提供一种可植入医疗电极导管的制造方法,以解决上述背景技术中提出的问题。
为实现上述目的,发明提供如下技术方案:一种可植入医疗电极导管的制造方法,具体包括以下步骤:
步骤一:将环形电极和适当长度的导线的一端在环形电极内壁焊,N个电极触点则焊接N组环形电极;
步骤二:将多腔管一端在一定长度上剥去一层外皮,漏出容纳导线的线槽,剥后直径以环形电极可以套入为准;
步骤三:将定位环套在多腔管上,然后将导线套在多腔管上;
步骤四:将上述步骤三中获得的结构装入模具,确保环形电极和定位环压在定位压块和弹性体组成的定位压块之下,且环形电极和定位环相对于定位压块左右两侧漏出距离一致;
步骤五:将组装好的模具从左至右,每调整到位一个环形电极,则在将下模下部锁紧压块向上压,再用锁紧螺母将定位压块锁紧;
步骤六:待定位环和所有环形电极均定位完成后,将上模与下模合模,最后进行注塑并进行常温固化。
优选的,所述多腔管,所述多腔管的中心设有一个中心孔,所述中心孔外周均匀分布若干个微孔,所述微孔的孔径仅能通过所述的导线。
优选的,步骤二中所述多腔管的剥去外皮的标准为将所述微孔与所述多腔管最外层表面之间的薄壁去除,漏出所述微孔的内腔。
优选的,所述定位压块在靠近环形电极的内弧面上粘接有柔性材料,所述柔性材料为橡胶或聚氨酯。
优选的,步骤六中的注塑材料采用与所述多腔管相同材料的聚氨酯胶体进行注塑,聚氨酯胶体与多腔管充分接合,并部分流入多腔管的微孔之中。
优选的,还包括多腔管前伸处理,具体为按照步骤二的多腔管的外层剥除方法将多腔管外层剥离后漏出线槽的多腔管剩余部分穿入环形电极。
与现有技术相比,发明的有益效果是:
1、该可植入医疗电极导管的制造方法,通过压块将环形电极压住,确保环形电极在注塑过程中位置不移动,并通过模具保证多个环形电极的同轴度。
2、该可植入医疗电极导管的制造方法,定位压块在靠近环形电极的内弧面上粘接有柔性材料,柔性材料为橡胶或聚氨酯,以避免压伤环形电极。
3、该可植入医疗电极导管的制造方法,注塑材料采用与所述多腔管相同材料的聚氨酯胶体进行注塑,聚氨酯胶体与多腔管充分接合,并部分流入多腔管的微孔之中,增强多腔管连接强度。
4、该可植入医疗电极导管的制造方法,对多腔管前伸处理,按照步骤二的多腔管的外层剥除方法将多腔管外层剥离后漏出线槽的多腔管剩余部分穿入环形电极,这样既可以简单地将各个导线均匀地分开避免接触,又可以保证注塑后的结构与多腔管主体连接可靠。
5、该可植入医疗电极导管的制造方法,设计一套合理的定位组件的模具,使用模具注塑成型,得到一致可靠的产品,其中的模具为钢模,分上模与下模,内嵌定位压块,定位压块下部通过螺钉与底部限位块相连,并施加压力,定位完成后进行合模,最终注塑聚氨酯胶体。
附图说明
图1为脉冲发生器与可植入医疗电极导管组合结构示意图;
图2为可植入医疗电极导与IPG相连的连接器端及连接器端内部各个截面的结构形示意图;
图3为环形电极与导线焊接好并穿入多腔导管后的相互之间的结构关系示意图;
图4为环形电极与导线焊接好并穿入多腔导管之后的整体结构形式示意图;
图5为注塑模具整体组装结构示意图;
图6为图5中A处的放大结构示意图。
图中:12-环形电极:13-定位环;15-多腔管;18-导线;41-上模;44-下模;45-锁紧压块;46-锁紧螺母;47-弹性体;48-定位压块。
具体实施方式
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
请参阅如图1和图2所示,发明提供一种技术方案:一种可植入医疗电极导管的制造方法,具体包括以下步骤:
步骤一:将环形电极12和适当长度的导线18的一端在环形电极13内壁焊,N个电极触点则焊接N组环形电极;
步骤二:将多腔管15一端在一定长度上剥去一层外皮,漏出容纳导线的线槽,剥后直径以环形电极12可以套入为准;
步骤三:将定位环13套在多腔管15上,然后将导线18按照图3和图4所示结构套在多腔管15上;
步骤四:将上述步骤三中获得的结构,如图4所示的结构后,按图5、图6所示装入模具,确保环形电极12和定位环13压在定位压块48和弹性体47组成的定位压块之下,且环形电极12和定位环13相对于定位压块48左右两侧漏出距离一致;
步骤五:如图5所示,将组装好的模具从左至右,每调整到位一个环形电极12,则在将下模44下部锁紧压块45向上压,再用锁紧螺母46将定位压块48锁紧;
步骤六:待定位环13和所有环形电极12均定位完成后,将上模41与下模44合模,最后进行注塑并进行常温固化。
本实施例中,所述多腔管15,所述多腔管15的中心设有一个中心孔,所述中心孔外周均匀分布若干个微孔,所述微孔的孔径仅能通过所述的导线。
本实施例中,步骤二中所述多腔管15的剥去外皮的标准为将所述微孔与所述多腔管15最外层表面之间的薄壁去除,漏出所述微孔的内腔。
本实施例中,所述定位压块48在靠近环形电极12的内弧面上粘接有柔性材料,所述柔性材料为橡胶或聚氨酯,以避免压伤环形电极。
本实施例中,步骤六中的注塑材料采用与所述多腔管15相同材料的聚氨酯胶体进行注塑,聚氨酯胶体与多腔管15充分接合,并部分流入多腔管15的微孔之中,增强导管连接强度。
本实施例中,还包括多腔管15前伸处理,具体为按照步骤二的多腔管15的外层剥除方法将多腔管15外层剥离后漏出线槽的多腔管15剩余部分穿入环形电极12,这样既可以简单地将各个导线18均匀地分开避免接触,又可以保证注塑后的结构与多腔管15主体连接可靠。
工作原理:该可植入医疗电极导管的制造方法,通过压块45将环形电极12压住,确保环形电极12在注塑过程中位置不移动,并通过模具保证多个环形电极12的同轴度。该可植入医疗电极导管的制造方法,定位压块48在靠近环形电极12的内弧面上粘接有柔性材料,柔性材料为橡胶或聚氨酯,以避免压伤环形电极。该可植入医疗电极导管的制造方法,注塑材料采用与所述多腔管15相同材料的聚氨酯胶体进行注塑,聚氨酯胶体与多腔管15充分接合,并部分流入多腔管15的微孔之中,增强多腔管15连接强度。该可植入医疗电极导管的制造方法,对多腔管15前伸处理,按照步骤二的多腔管15的外层剥除方法将多腔管15外层剥离后漏出线槽的多腔管15剩余部分穿入环形电极12,这样既可以简单地将各个导线18均匀地分开避免接触,又可以保证注塑后的结构与多腔管15主体连接可靠。该可植入医疗电极导管的制造方法,设计一套合理的定位组件的模具,使用模具注塑成型,得到一致可靠的产品,其中的模具为钢模,分上模41与下模44,内嵌定位压块48,定位压块48下部通过螺钉与底部限位块相连,并施加压力,定位完成后进行合模,最终注塑聚氨酯胶体。
显然,本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。这样,倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内,则本发明也意图包含这些改动和变型在内。

Claims (6)

1.一种可植入医疗电极导管的制造方法,其特征在于:具体包括以下步骤:
步骤一:将环形电极(12)和适当长度的导线(18)的一端在环形电极(13)内壁焊,N个电极触点则焊接N组环形电极;
步骤二:将多腔管(15)一端在一定长度上剥去一层外皮,漏出容纳导线的线槽,剥后直径以环形电极(12)可以套入为准;
步骤三:将定位环(13)套在多腔管(15)上,然后将导线(18)套在多腔管(15)上;
步骤四:将上述步骤三中获得的结构装入模具,确保环形电极(12)和定位环(13)压在定位压块(48)和弹性体(47)组成的定位压块之下,且环形电极(12)和定位环(13)相对于定位压块(48)左右两侧漏出距离一致;
步骤五:将组装好的模具从左至右,每调整到位一个环形电极(12),则在将下模(44)下部锁紧压块(45)向上压,再用锁紧螺母(46)将定位压块(48)锁紧;
步骤六:待定位环(13)和所有环形电极(12)均定位完成后,将上模(41)与下模(44)合模,最后进行注塑并进行常温固化。
2.如权利要求1所述的一种可植入医疗电极导管的制造方法,其特征在于:所述多腔管(15),所述多腔管(15)的中心设有一个中心孔,所述中心孔外周均匀分布若干个微孔,所述微孔的孔径仅能通过所述的导线。
3.如权利要求2所述的一种可植入医疗电极导管的制造方法,其特征在于:步骤二中所述多腔管(15)的剥去外皮的标准为将所述微孔与所述多腔管(15)最外层表面之间的薄壁去除,漏出所述微孔的内腔。
4.如权利要求1所述的一种可植入医疗电极导管的制造方法,其特征在于:所述定位压块(48)在靠近环形电极(12)的内弧面上粘接有柔性材料,所述柔性材料为橡胶或聚氨酯。
5.如权利要求1所述的一种可植入医疗电极导管的制造方法,其特征在于:步骤六中的注塑材料采用与所述多腔管(15)相同材料的聚氨酯胶体进行注塑,聚氨酯胶体与多腔管(15)充分接合,并部分流入多腔管(15)的微孔之中。
6.如权利要求1所述的一种可植入医疗电极导管的制造方法,其特征在于:还包括多腔管(15)前伸处理,具体为按照步骤二的多腔管(15)的外层剥除方法将多腔管(15)外层剥离后漏出线槽的多腔管(15)剩余部分穿入环形电极(12)。
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