Method and apparatus for determining the position of catheters, tubes,
placement guidewires and implantable ports within biological tissue
    2.
    发明授权
    Method and apparatus for determining the position of catheters, tubes, placement guidewires and implantable ports within biological tissue 失效
    用于确定生物组织内的导管,管,放置导丝和可植入端口的位置的方法和装置

    公开(公告)号:US5513637A

    公开(公告)日:1996-05-07

    申请号:US362195

    申请日:1994-12-21

    IPC分类号: A61B5/06 A61M25/095 A61B5/05

    CPC分类号: A61B5/06 Y10S128/903

    摘要: A method and apparatus for determining accurately, both during and after insertion, the full length position of catheters (including implanted ports), tubes and placement guidewires within biological tissue is disclosed including a transmitter/detector unit having an alternating current (AC) radio-frequency (RF) transmitter with antenna and a radio signal transmitter in the form of a continuous or segmented fine wire receiving antenna situated along the full length of the catheter, guidewire, and implanted port assemblies. The guidewire apparatus also includes a tip antenna. These antennae are connected by a removable clip to a wide-band RF detector circuit, situated within the transmitter/detector unit. The RF transmitter/detector circuit provides a voltage output that is a direct function of the relative spatial proximity of the transmitting antenna. This proximity is displayed visually to the operator using a sequential linear LED array whose sensitivity is controlled by a gain control knob. An audible tone is also produced by a miniature speaker, and whose tone frequency is varied as a direct function of the transmitter proximity. Also shown is a method and apparatus for locating the full length position of implanted port mounted catheters and a method and apparatus for simultaneous infusion into an implanted port assembly and detecting the full length position of the port mounted catheter.

    摘要翻译: 公开了一种用于在插入期间和之后准确地确定生物组织内的导管(包括植入端口),管和布置导线的全长位置的方法和装置,包括具有交流(AC)无线电设备的发射器/检测器单元, 频率(RF)发射器和无线电信号发射器,其形式为沿着导管,导丝和植入端口组件的全长定位的连续或分段细线接收天线。 导丝装置还包括尖端天线。 这些天线通过可拆卸的夹子连接到位于发射机/检测器单元内的宽带RF检测器电路。 RF发射器/检测器电路提供电压输出,其是发射天线的相对空间接近的直接函数。 使用顺序线性LED阵列可视地向操作者显示该接近度,其灵敏度由增益控制旋钮控制。 声音也由微型扬声器产生,其音调频率作为发射机接近度的直接函数而变化。 还示出了用于定位植入端口安装的导管的全长位置的方法和装置,以及用于同时输注到植入端口组件中并检测端口安装的导管的全长位置的方法和装置。

    Method and apparatus for determining the position of catheters, tubes,
placement guidewires and implantable ports within biological tissue
    3.
    发明授权
    Method and apparatus for determining the position of catheters, tubes, placement guidewires and implantable ports within biological tissue 失效
    用于确定生物组织内的导管,管,放置导丝和可植入端口的位置的方法和装置

    公开(公告)号:US5375596A

    公开(公告)日:1994-12-27

    申请号:US953072

    申请日:1972-09-29

    IPC分类号: A61B5/06 A61M25/095 A61B5/05

    CPC分类号: A61B5/06 Y10S128/903

    摘要: A method and apparatus for determining accurately, both during and after insertion, the full length position of catheters (including implanted ports (64)), tubes (30) and placement guidewires (22) within biological tissue is disclosed including a transmitter/detector unit (2) having an alternating current (AC) radio-frequency (RF) transmitter with antenna (14), and a radio signal transmitter in the form of a continuous or segmented fine wire receiving antenna (28, 32, 74) situated along the full length of the catheter, guidewire, and implanted port assemblies (22, 30, 64). The guidewire apparatus also includes a tip antenna. These antennae are connected by a removable clip (18) to a wide-band RF detector circuit, situated within the transmitter/detector unit (2). The RF transmitter/detector circuit provides a voltage output that is a direct function of the relative spatial proximity of the transmitting antenna. This proximity is displayed visually to the operator using a sequential linear LED array (8) whose sensitivity is controlled by a gain control knob (10). An audible tone is also produced by a miniature speaker (12), and whose tone frequency is varied as a direct function of the transmitter proximity. Also shown is a method and apparatus for locating the full length position of implanted port (64) mounted catheters (72), and a method and apparatus for simultaneous infusion into an implanted port assembly 64 and detecting the full length position of the port mounted catheter (72).

    摘要翻译: 公开了一种用于在插入期间和之后准确地确定生物组织内的导管(包括植入端口(64)),管(30)和布置导线(22)的全长位置的方法和装置,其包括发射器/检测器单元 (2)具有具有天线(14)的交流(AC)射频(RF)发射器,以及沿着所述连接或分段的细线接收天线(28,32,74)形式的无线电信号发射器, 导管,导丝和植入端口组件(22,30,64)的全长。 导丝装置还包括尖端天线。 这些天线通过可拆卸的夹子(18)连接到位于发射器/检测器单元(2)内的宽带RF检测器电路。 RF发射器/检测器电路提供电压输出,其是发射天线的相对空间接近的直接函数。 使用顺序线性LED阵列(8)可视地向操作者显示该接近度,其中灵敏度由增益控制旋钮(10)控制。 微声扬声器(12)还产生可听音,并且其音调频率作为发射机接近度的直接函数而变化。 还示出了一种用于定位植入端口(64)安装的导管(72)的全长位置的方法和装置,以及用于同时浸入植入端口组件64并检测端口安装的导管的全长位置的方法和装置 (72)。