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    • 2. 发明授权
    • Medical devices and materials having enhanced magnetic images visibility
    • 具有增强的磁图像可视性的医疗设备和材料
    • US5817017A
    • 1998-10-06
    • US446652
    • 1995-05-24
    • Stuart W. YoungRichard A. Miller
    • Stuart W. YoungRichard A. Miller
    • A61B5/055A61B19/00A61M25/01
    • A61M25/0108A61M25/0127A61B2090/3954A61B5/055
    • Catheters and other medical devices include a non-metallic member having paramagnetic ionic particles fixedly incorporated therethrough in order to provide enhanced detectability when viewed by magnetic imaging regardless of the orientation of the non-metallic member in the magnetic field. Catheters are usually formed from polymeric tubing, and the paramagnetic ionic particles are usually formed from paramagnetic ions incorporated with water or other proton-donating fluid into carrier particles, such as zeolites, molecular sieves, clays, synthetic ion exchange resins, and microcapsules. Catheters and other medical devices include a non-metallic member having small iron and/or superparamagnetic particles fixedly incorporated therethrough or thereover in order to provide enhanced detectability when viewed by magnetic imaging. Catheters are usually formed from polymeric tubing, and the iron and/or superparamagnetic particles at or near the surface of the catheter interact with the water protons of the surrounding patient's body to provide image enhancement regardless of the orientation of the polymeric or other non-metallic material in the magnetic field.
    • PCT No.PCT / US94 / 04011 Sec。 371日期:1995年5月24日 102(e)日期1995年5月24日PCT 1994年4月12日PCT PCT。 出版物WO94 / 23782 日期1994年10月27日食管和其他医疗装置包括具有固定地并入其中的顺磁性离子颗粒的非金属构件,以便在通过磁性成像观察时提供增强的可检测性,而不管非金属构件在磁场中的取向如何。 导管通常由聚合物管形成,并且顺磁性离子颗粒通常由与水或其它质子供体流体结合的顺磁性离子形成载体颗粒,如沸石,分子筛,粘土,合成离子交换树脂和微胶囊。 导管器和其它医疗装置包括具有小的铁和/或超顺磁性颗粒的非金属构件,其固定地并入其中或其上,以便在通过磁性成像观察时提供增强的可检测性。 导管通常由聚合物管形成,导管表面处或附近的铁和/或超顺磁性颗粒与周围患者身体的水质相互作用,以提供图像增强,而不管聚合物或其它非金属的取向如何 材料在磁场中。