CN107822709B - Ent工具天线 - Google Patents
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Abstract
本发明主题为“ENT工具天线”。本发明公开了一种设备,所述设备包括柄部以及附接到柄部并从柄部延伸的第一导电管。所述管是生物相容的,并且管远侧端部被配置成插入人的孔口中用于医疗规程。所述设备包括附接到第一导电管并被第一导电管包封的第二导电管。两个管一起充当用于电磁辐射的天线。绝缘导电线圈围绕第二导电管成型并固定到第二导电管,并且线圈响应于横贯线圈的磁场产生信号。所述设备还包括收发器,所述收发器接收来自绝缘导电线圈的信号,并且作为响应,以预设频率产生射频信号,并且将射频信号传送到第二导电管,用于使来自其的辐射以预设频率作为电磁能进行辐射。
Description
相关申请的交叉引用
本专利申请要求2016年9月14日提交的美国临时专利申请62/394,426的权益,该临时专利申请以引用方式并入本文。
技术领域
本发明总体涉及外科工具,并且具体地涉及无线耦合到系统控制器的刚性外科工具。
背景技术
一些外科工具是独立的元件,不需要附加的连接,诸如布线。然而,测量诸如由工具施加的力或工具的位置和取向之类的参数的“智能”工具通常确实需要连接到记录该参数的系统控制器。当连接可包括布线时,该布线可能干扰医生对工具的操作,使得无线连接可以是优选的。无线连接的另一个优点是对可部署的无线工具的数量基本上没有限制,而电缆连接需要连接器,因此限制非无线工具的数量。
无线连接需要天线来传输和接收其电磁能,并且与工具的尺寸相比,以及特别是与此种工具的柄部的尺寸相比,有效的天线可相对较大。
发明内容
本发明的实施方案提供了设备,该设备包括:
柄部;
第一导电管,该第一导电管固定地附接到柄部并从该柄部延伸,该第一导电管是生物相容的,其中该第一导电管的远侧端部被配置成插入人的孔口中,以便在其中执行医疗规程;
第二导电管,该第二导电管固定地附接到第一导电管并被第一导电管包封,并且与第一导电管一起充当用于电磁辐射的天线;
绝缘导电线圈,该绝缘导电线圈围绕第二导电管成型并固定到第二导电管,该绝缘导电线圈响应于横贯线圈的磁场来产生信号;和
收发器,该收发器被连接以接收来自绝缘导电线圈的信号,以便作为响应,以预设频率产生射频信号,并且将射频信号传送到第二导电管,用于使来自该第二导电管的辐射以预设频率作为电磁能进行辐射。
在公开的实施方案中,第一导电管具有第一电导率,并且第二导电管具有大于第一电导率的第二电导率。
在另外的公开的实施方案中,收发器固定地安装在柄部内。
在另外的公开的实施方案中,天线具有天线阻抗,并且设备还包括阻抗转换器,该阻抗转换器连接到收发器,以便以收发器阻抗接收射频信号,并且以天线阻抗将射频信号转换为转换的射频信号,并且阻抗转换器耦合到第二导电管,使得该管接收转换的射频信号,并且作为响应以预设射频辐射电磁能。通常,阻抗转换器固定地安装在柄部内。
在另选的实施方案中,该设备包括辐射横贯绝缘导电线圈的磁场的磁辐射体组件,以及接收来自天线的电磁辐射的处理器,并且该处理器分析接收到的辐射以确定绝缘导电线圈相对于磁辐射体组件的位置。
在另外的另选的实施方案中,该设备包括电路,该电路被配置成对来自绝缘导电线圈的信号执行离散傅里叶变换以便产生变换的信号,并且收发器被连接以接收变换的信号并响应于变换的信号产生射频信号。
在另外的另选的实施方案中,孔口是人的鼻孔,并且柄部、第一导电管、第二导电管、绝缘导电线圈和收发器形成被插入鼻孔中的耳、鼻和喉(ENT)外科工具。
根据本发明的实施方案,还提供了一种方法,该方法包括:
提供柄部;
将第一导电管固定地附接到柄部使得该第一导电管从柄部延伸,其中第一导电管是生物相容的,并且其中第一导电管的远侧端部被配置成插入人的孔口中,以便在其中执行医疗规程;
将第二导电管固定地附接到第一导电管,使得第一导电管包封第二导电管,并且其中第二导电管与第一导电管一起充当用于电磁辐射的天线;
使绝缘导电线圈围绕第二导电管成型,并且将线圈固定到第二导电管,其中线圈响应于横贯线圈的磁场产生信号;以及
连接收发器以接收来自绝缘导电线圈的所述信号,以便作为响应,以预设频率产生射频信号,并且将射频信号传送到第二导电管,用于使来自该第二导电管的辐射以预设频率作为电磁能进行辐射。
结合附图,通过以下对本公开的实施方案的详细说明,将更全面地理解本公开,在附图中:
附图说明
图1是根据本发明的实施方案的使用ENT(耳、鼻和喉)无线工具的ENT系统的示意图;
图2A、图2B、图2C和图2D是根据本发明的实施方案的可在图1的系统中使用的另选的ENT无线工具的示意图;
图3A和图3B分别是根据本发明的实施方案的在图1的系统中使用的无线工具的外部和内部的示意图;并且
图4是根据本发明的实施方案的ENT无线工具的框图。
具体实施方式
概述
通过使工具(通常为杆)的“业务端”既用于执行其外科功能,又用作用于从工具传输并由工具接收的射频辐射的天线,本发明的实施方案克服了需要用于ENT无线工具的相对较大的天线的问题。通过将杆实现为天线,可使工具的柄部微小和精细,如许多ENT医生所优选的那样。
在一个实施方案中,被配置用于包括来自患者的窦的抽吸的ENT规程的无线外科工具包括柄部,该柄部固定地附接有生物相容的导电管。管从柄部延伸,并被配置成插入到患者的孔口通常为鼻孔中,用于ENT规程。
第二导电管固定在生物相容的导电管内,使得第二管被生物相容的导电管包封。两个管一起充当用于电磁辐射的天线。
通常通过缠绕第二导电管使绝缘导电线圈围绕第二导电管成型,使得该绝缘导电线圈固定到第二导电管。响应于横贯线圈的磁场,线圈产生信号。
无线外科工具还包括通常位于柄部内的收发器。收发器接收来自绝缘导电线圈的信号,并且作为响应,以通常为2.4GHz的预设频率产生射频信号,并且将射频信号传送到第二导电管,用于使来自第二导电管的辐射以预设频率作为电磁能进行辐射。
具体实施方式
现在参考图1,图1是根据本发明的实施方案的ENT(耳、鼻和喉)系统20的示意图。如下面更详细描述的,系统20中使用的无线外科工具21与操作系统的系统处理器40无线通信,该系统处理器40包括与一个或多个存储器通信的处理单元。在下面的描述中,假定系统20用于执行医疗规程,其包括在患者22上的窦规程,并且如下面更详细描述的,工具21包括一个或多个磁性传感器32,该磁性传感器32在手术期间由磁性跟踪系统23跟踪。为了使跟踪是有效的,在系统20中,将患者22的CT(计算机断层摄影)图像和磁性跟踪系统23的参考系进行配准。虽然CT图像通常可包括磁共振成像(MRI)图像或荧光透视图像,但是在本文的描述中,图像被假定为包括例如荧光透视CT图像。
在该窦规程之前和期间,包括在磁性跟踪系统中的磁辐射体组件24定位在患者的头部下方。组件24包括磁场辐射体26,该磁场辐射体被固定在适当位置并将正弦交变磁场传输到患者22的头部所在的区域30中。举例来讲,组件24的辐射体26被布置成围绕患者22头部的大致马蹄形状。然而,组件24的辐射体的另选配置对于本领域的普通技术人员将是显而易见的,并且所有这样的配置都被认为包括在本发明的范围内。
在一些实施方案中,在手术之前,对于由系统20执行的配准,在尖端处具有磁性传感器32的工具21的远侧尖端34在患者22的皮肤的不同区域处接触。一旦组件24被校准,传感器中响应于其与由组件24产生的磁场的相互作用而感应的信号使尖端的位置能够被跟踪。由操作系统20的医生54手持的探头柄部52连接到工具21的近侧端部,该柄部允许医生操纵工具。柔性管材59连接到柄部52,该管材允许上面提及的医疗规程,包括通过工具21的管腔排出流体。在一些实施方案中,柄部52可结合允许医生当远侧尖端接触皮肤时控制来自远侧尖端传感器的信号的获取的控制器。由Biosense Webster(Diamond Bar,CA)生产的系统使用类似于本文所述的系统在受磁场辐照的区域中查找线圈的位置和取向。另选地,可使用本领域已知的用于配准的一种或多种其它方法来执行配准。
包括辐射体26的系统20的元件由系统处理器40控制。处理器40可以安装在控制台50中,该控制台包括操作控制件58,该操作控制件通常包括小键盘和/或指向装置,诸如鼠标或轨迹球。控制台50经由电缆和/或无线地连接到辐射体。医生54使用操作控制器58以与处理器进行交互,同时使用系统20执行ENT规程。在执行该规程时,处理器可在屏幕56上呈现该规程的结果。
处理器40使用存储在存储器42中的软件来操作系统20。例如,软件可以电子形式通过网络下载到处理器40,或者另选地或除此之外,该软件可被提供和/或存储在非临时性有形介质(例如,磁存储器、光学存储器或电子存储器)上。
处理器40尤其使用软件来操作组件24的磁辐射体26。如上所述,辐射体将不同频率的正弦交变磁场传输到区域30中,包括患者22的头部,并且来自辐射体的场在传感器32中感应信号。如下所述,信号和/或来源于信号的数据可被无线地传输到处理器,该处理器分析接收到的数据和/或信号以导出用于传感器的位置和取向值,该位置和取向值相对于由组件限定的参考系进行测量。
图2A、图2B、图2C和图2D是根据本发明的实施方案的可在系统20中使用的ENT无线工具(工具21的另选工具)的示意图。图2A示出了ENT工具60,该ENT工具60具有固定地连接到非柔性管状构件60M的柄部60H;图2B示出了ENT工具62,该ENT工具62具有固定地连接到非柔性管状构件62M的柄部62H;图2C示出了ENT工具64,该ENT工具64具有固定地连接到非柔性管状构件64M的柄部64H;并且图2D示出了ENT工具66,该ENT工具66具有固定地连接到非柔性管状构件66M的柄部66H。工具60、工具62、工具64和工具66在形状上与工具21大致相似,所有工具都具有固定连接到管状构件的柄部。以下参考图3A和图3B更详细描述了工具21。
图3A和图3B分别是根据本发明的实施方案的ENT无线工具21的外部和内部的示意图。如图3A所示,工具21的远侧端部包括通常由不良电导体诸如钛合金或不锈钢形成的外部非柔性生物相容性金属管70。管70充当保护屏蔽,该保护屏蔽固定到内部非柔性金属管72(图3B,其中管70已经被隐藏),金属管72通常是良好电导体诸如铜。如下面另外描述的,管72与管70一起形成管状构件,该管状构件充当工具21的天线71,使得天线71在本文中也称为管状构件71。在本文所述的医疗规程中,构件71可插入患者22的孔口,诸如患者的鼻孔中。
管70固定地附接到壳体74(在图3B中被示为透明的部分),壳体74包封印刷电路板(PCB)76。管状流体连接件80也固定地附接到壳体74,并且如图3B所示,内部管72耦合到连接件80。连接件80连接到管材59(图1)并且被密封到管72,使得在ENT手术期间,体液可通过内部管72和连接件80排出,而不泄漏到壳体74中。
处于绝缘线圈形式的传感器32围绕管72成型,使得在下面的描述中,传感器32在本文中也称为线圈32。举例来讲,假定工具21具有三个大致相似的线圈32,一个在管72的远侧尖端处,并且两个在管上的更近侧的位置处。然而,本发明的其它实施方案可具有多于或少于三个的线圈32。每个线圈32通过一对绝缘导体84连接到PCB 76,该PCB 76包括低噪声前置放大器和模数(A/D)转换器。
无线子组件90经由水封的连接器92固定地连接到壳体74。连接器92被水封,使得工具21的随后的消毒不会对工具21的部件产生不利影响。子组件90被保护壳体94包封,医生54也能够将保护壳体94用作柄部52,使得壳体94在本文中也称为柄部52。
在本发明的实施方案中,柄部通常被配置成尽可能小,并且还被配置成被执行规程的医生牢固地抓紧。如下所述,柄部52包含电池,并且电池的尺寸通常限制了柄部可被制造成多小。在一个实施方案中,柄部52具有圆柱形形状,其直径约为2cm,并且长度约为3cm。
连接器92具有多个导体,该多个导体将功率传递到PCB 76,并且在PCB和子组件90内的其它电路100(下面描述的)之间传递时钟和数据信号。功率和时钟信号来源于由电池96驱动的功率和时钟电路98(其通常是PCB)。电路98还向子组件90的其它元件提供功率和时钟信号。在一些实施方案中,子组件90还结合加速度计97,该加速度计97可被配置成当工具21不使用时从电池96断电。
包括耦合到处理器的现场可编程门阵列(FPGA)的信号处理板102从PCB 76的A/D转换器接收数字信号。在一个实施方案中,板102由瑞士苏黎世的Enclustra公司生产的FPGA模块形成。处理器分析信号以发现横贯传感器32的磁场的大小,并且该大小被传递到收发器板104。
收发器板104被配置成以预定的射频进行传输和接收,该预定的射频例如被假定为在2.4GHz频带内。在一个实施方案中,收发器板104由得克萨斯州达拉斯的德州仪器公司生产的CC2543片上系统形成。板104将接收到的数据编码为其传输频率,以准备到系统处理器40的无线传输。
板104通过平衡-不平衡转换器106和电缆108耦合到天线71,该电缆电流连接到管72。平衡-不平衡转换器充当阻抗转换器,以便使板104的阻抗与电缆108的阻抗匹配。电缆108通常是同轴的,阻抗为50Ω。平衡-不平衡转换器也固有地充当用于2.4GHz频带的滤波器。在一个实施方案中,平衡-不平衡转换器106包括由加利福尼亚州Camarillo的JohansonTechnology Inc.生产的2450BM15平衡-不平衡转换器。
如本领域已知的,在大约2.4GHz的频率下操作的部件通常根据具有电容、电感和电阻特性的分布元件模型进行操作。这与在较低频率下的部件的操作形成对比,该部件通常根据具有电容或电感或电阻特性中任一特性的集总元件模型进行操作。因此,在收发器板104之前的工具21的部件通常可被认为是集总部件,而板的部件以及随后的部件,诸如电缆108和天线71通常以分布方式操作。
如上所述,管70和管72充当天线71,并且在本发明的实施方案中,天线在板104的预定射频下从板104接收射频信号,并且将射频信号传输到板。在操作中,天线71从天线传输电磁辐射,并且在天线处接收电磁辐射。
从理论的观点来看,天线71可被认为是作为单极天线操作,其以任何奇数个四分之一波长谐振。因此,对于波长约为0.125m的2.4GHz频带,天线71,即管70和管72可形成为任何奇数个的大约3cm长。实际上,由于管状构件71和同轴电缆108的分布特性,管状构件的长度的实际值可与理论值不同。
在一个实施方案中,天线71形成为大约15cm长,并且本发明人已经发现,使用该长度,天线,即管状构件71以相对较高的Q谐振。如将理解的那样,Q减小,因为天线71具有由的电导率相对较差的材料形成的外部管70,并且Q的减小使得天线的谐振长度的选择更容易。因此,本领域普通技术人员将能够为天线71选择15cm以外的其它长度,而无需过多的实验。
此外,虽然上述说明已经涉及在2.4GHz频带中使用ENT无线工具,但是本领域普通技术人员将能够使描述适应在其它频带中操作的ENT无线工具(加上必要的变更),该其它频带包括但不限于特高频(UHF)和超高频(SHF)频带。
图4是根据本发明实施方案的ENT无线工具的示意性框图。尽管为了清楚起见,框图的以下说明涉及工具21,但是应当理解,框图应用于本文所述的其它ENT无线工具(加上必要的变更)。传感器块150对应于传感器32,传感器物理地位于天线21的管72上。来自传感器块150的信号被馈送到包括板76和板102的信号处理块152。来自信号处理块的数据被馈送到对应于收发器板104的收发器块154,并且来自板的编码数据经由包括平衡-不平衡转换器106的平衡-不平衡转换器和滤波器块156馈送到天线71。虚线158表示传感器32和天线71物理地位于同一位置,即管72处。
天线71辐射电磁辐射,将来自传感器32的信号和/或来源于信号的数据传送到处理器40。在一个实施方案中,使用傅里叶变换(通常为离散傅立叶变换(DFT))在信号处理块152(即,板76和板102)中将来源于信号的数据进行转换,并且从天线71传输DFT。对信号执行DFT可减小需要发送的数据的量。
通常,电磁辐射也可用于将工具21的其它操作参数诸如时间戳、电池96的状态和/或从可结合到工具中的其它元件例如加速度计97导出的值传送到处理器。处理器40还可被配置成经由天线71接收的电磁辐射传送来自用于工具21的处理器的控制信号。
应当理解,在本发明的实施方案中,管72具有多种功能:充当用于工具21的天线,保持用于工具的传感器的位置跟踪,以及执行工具的外科功能。
应当理解,上述实施方案以举例的方式引用,并且本发明不限于上文具体示出和描述的内容。相反,本发明的范围包括上文描述的各种特征的组合和子组合,以及本领域技术人员在阅读前述说明时将会想到的且未在现有技术中公开的本发明的变型和修改。
Claims (8)
1.一种外科设备,包括:
柄部;
第一导电管,所述第一导电管固定地附接到所述柄部并从所述柄部延伸,所述第一导电管是生物相容的,其中所述第一导电管的远侧端部被配置成插入人的孔口中,以便在其中执行医疗规程;
第二导电管,所述第二导电管固定地附接到所述第一导电管并被所述第一导电管包封,并且与所述第一导电管一起充当用于电磁辐射的天线;
绝缘导电线圈,所述绝缘导电线圈围绕所述第二导电管成型并固定到所述第二导电管,所述绝缘导电线圈响应于横贯所述绝缘导电线圈的磁场产生信号,产生的所述信号指示所述绝缘导电线圈相对于所述磁场的位置;和
收发器,所述收发器被配置成接收来自所述绝缘导电线圈的所述信号,并以基于所述信号的预设频率产生射频信号,所述收发器被进一步配置成将所述射频信号传送到所述第二导电管,以使辐射从所述第二导电管以所述预设频率作为电磁能无线辐射到仪器位置跟踪组件的处理器。
2.根据权利要求1所述的外科设备,其特征在于,所述第一导电管具有第一电导率,并且所述第二导电管具有大于所述第一电导率的第二电导率。
3.根据权利要求1所述的外科设备,其特征在于,所述收发器固定地安装在所述柄部内。
4.根据权利要求1所述的外科设备,其特征在于,所述天线具有天线阻抗,所述外科设备还包括阻抗转换器,所述阻抗转换器连接到所述收发器,以便以收发器阻抗接收所述射频信号,并且以所述天线阻抗将所述射频信号转换为转换的射频信号,并且其中所述阻抗转换器耦合到所述第二导电管,使得所述第二导电管接收所述转换的射频信号,并且作为响应以所述预设频率辐射所述电磁能。
5.根据权利要求4所述的外科设备,其特征在于,所述阻抗转换器固定地安装在所述柄部内。
6.根据权利要求1所述的外科设备,并且包括辐射横贯所述绝缘导电线圈的所述磁场的磁辐射体组件,和接收来自所述天线的所述电磁辐射的处理器,并且所述处理器分析所接收到的辐射以确定所述绝缘导电线圈相对于所述磁辐射体组件的位置。
7.根据权利要求1所述的外科设备,并且包括电路,所述电路被配置成对来自所述绝缘导电线圈的所述信号执行离散傅里叶变换以便产生变换的信号,并且其中所述收发器被连接以接收所述变换的信号并响应于所述变换的信号产生所述射频信号。
8.根据权利要求1所述的外科设备,其特征在于,所述孔口包括人的鼻孔,并且其中所述柄部、所述第一导电管、所述第二导电管、所述绝缘导电线圈和所述收发器被包括在插入所述鼻孔中的耳、鼻和喉(ENT)外科工具中。
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-
2017
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- 2017-09-13 ES ES17190800T patent/ES2764704T3/es active Active
- 2017-09-13 CA CA2979159A patent/CA2979159A1/en not_active Abandoned
- 2017-09-13 CN CN201710823655.2A patent/CN107822709B/zh active Active
- 2017-09-13 JP JP2017175525A patent/JP7046536B2/ja active Active
- 2017-09-13 EP EP17190800.7A patent/EP3300679B1/en active Active
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CN107822709A (zh) | 2018-03-23 |
ES2764704T3 (es) | 2020-06-04 |
US20180070969A1 (en) | 2018-03-15 |
IL254352B (en) | 2021-01-31 |
EP3300679B1 (en) | 2019-10-23 |
CA2979159A1 (en) | 2018-03-14 |
IL254352A0 (en) | 2017-11-30 |
AU2017225009A1 (en) | 2018-03-29 |
US11058446B2 (en) | 2021-07-13 |
JP7046536B2 (ja) | 2022-04-04 |
JP2018043009A (ja) | 2018-03-22 |
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