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    • 13. 发明授权
    • Stiffening member to increase fluid flow within a medical device
    • 加强构件以增加医疗装置内的流体流动
    • US06770038B2
    • 2004-08-03
    • US09495619
    • 2000-02-01
    • Daniel J. BalbierzRobert Bley
    • Daniel J. BalbierzRobert Bley
    • A61B500
    • A61M25/0102A61M25/00A61M25/0043A61M25/0612
    • The present invention relates to a stiffening member, which is a stylet, that helps increase the fluid flow area within a catheter. In a preferred embodiment, the stylet is made of a single piece of flat rectangular stock that can be twisted to provide equal rigidity in all directions. A cross-section of the stylet reveals that the substantially flat rectangular shape of the stylet permits maximum fluid flow between the stylet and the catheter. This results in increased ease in manipulating and removing the stylet from the catheter. In addition, because the preferred embodiment of the stylet comprises a single element, it is easier to manufacture and should result in lower manufacturing costs. Moreover, the use of the present invention should also result in lower overall health-care costs.
    • 本发明涉及一种加强构件,其是探针,其有助于增加导管内的流体流动面积。 在优选实施例中,探针由单片扁平矩形坯料制成,其可以被扭转以在所有方向上提供相等的刚度。 探针的横截面显示管心针的基本平坦的矩形形状允许探针和导管之间的最大流体流动。 这导致更容易地从导管操作和去除探针。 此外,由于探针的优选实施例包括单个元件,因此制造更容易并且应导致较低的制造成本。 而且,本发明的使用也应降低整体医疗成本。
    • 20. 发明授权
    • Method and apparatus for overpressure protection of a catheter
    • 导管超压保护方法及装置
    • US6033393A
    • 2000-03-07
    • US775409
    • 1996-12-31
    • Daniel J. BalbierzJack Walker
    • Daniel J. BalbierzJack Walker
    • A61M39/00A61M25/00A61M39/22A61M31/00
    • A61M39/22A61M2025/0076A61M25/0075
    • A method and apparatus for overpressure protection of a catheter from an indwelling catheter. A method in one embodiment includes injecting an agent into the catheter and relieving overpressures in the catheter during the injecting step. The agent is typically a declotting agent and the obstruction is typically a clot (e.g., blood clot). In one embodiment of the apparatus, a catheter includes a cannula and a first hub and a second hub, each of which are coupled to the cannula. The first hub is for receiving an agent which is placed into the cannula to remove an obstruction, and the second hub includes an overpressure relief valve for relieving an overpressure condition in the cannula. Other embodiments of the invention are also described.
    • 一种用于从留置导管超导保护导管的方法和装置。 在一个实施方案中的方法包括将药剂注射到导管中并在注射步骤期间释放导管中的超压。 该药剂通常是一种去酸剂,阻塞物通常是凝块(例如血块)。 在该装置的一个实施例中,导管包括套管和第一轮毂以及第二轮毂,每个毂联接到套管。 第一轮毂用于接收放置在套管中以除去障碍物的药剂,并且第二轮毂包括用于缓解套管中的超压状况的超压安全阀。 还描述了本发明的其它实施例。