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    • 4. 发明授权
    • Hypodermic needle with weeping tip and method of use
    • 皮下注射针头及其使用方法
    • US06241710B1
    • 2001-06-05
    • US09468688
    • 1999-12-20
    • Robert A. VanTasselDavid R. Holmes, Jr.Robert S. Schwartz
    • Robert A. VanTasselDavid R. Holmes, Jr.Robert S. Schwartz
    • A61M532
    • A61M5/3286A61M5/3291A61M25/0068A61M2025/0057A61M2025/0073
    • The invention provides surgical needles with a porous distal portion from which a liquid injectate will weep or ooze multidirectionally under injection pressure while the porous distal portion of the needle is inserted into a body surface. The porous distal portion of the needle can be fabricated from a porous carbon, metal, ceramic or polymer and preferably has a decreasing gradient of impedance to fluid flowing to the point of the needle to compensate for the falling off of injection pressure as fluid moves towards the point, thereby ensuring uniform weeping of the injectate along the injection course. The needle is adapted for attachment to a catheter or syringe. In another embodiment, a surgical assemblage is provided wherein a porous distal portion having similar fluid flow characteristics is located along the distal end of a catheter, and a needle point is attached to the distal end of the catheter (e.g., a steerable catheter) for piercing tissue. A guidance catheter can be used to direct the invention devices to a remote internal injection site. The invention devices and methods can be used to inject fluids (including those containing nucleic acids for gene therapy) into interior body walls or tissue, such as a beating heart, without substantial loss of fluid and without substantial damage to tissue caused by injectate.
    • 本发明提供具有多孔远端部分的手术针头,其中注射的液体将在注射压力下多次渗漏或渗出,同时针的多孔远端部分插入体表面。 针的多孔远端部分可以由多孔碳,金属,陶瓷或聚合物制成,并且优选地具有减小的流向梯度的流体流向针的位置以补偿注射压力随着流体朝向 这点,从而确保注射过程中注射剂的均匀渗漏。 该针适于附接到导管或注射器。 在另一个实施例中,提供了一种手术组合件,其中具有类似流体流动特征的多孔远侧部分沿着导管的远端定位,并且针尖附接到导管的远端(例如,可导向的导管),用于 刺穿组织。 引导导管可用于将本发明装置引导到远程内部注射部位。 本发明的装置和方法可用于将流体(包括含有用于基因治疗的核酸的那些)注射到内部体壁或组织(例如打浆心脏)中,而没有明显的流体损失,并且对注射造成的组织没有实质的损害。
    • 8. 发明授权
    • Apparatus with weeping tip and method of use
    • 具有啜饮尖端和使用方法的设备
    • US06855132B2
    • 2005-02-15
    • US10342023
    • 2003-01-14
    • Robert A. VanTasselDavid R. Holmes, Jr.Robert S. Schwartz
    • Robert A. VanTasselDavid R. Holmes, Jr.Robert S. Schwartz
    • C12N15/09A61K31/711A61K48/00A61M5/158A61M5/32A61M25/00A61M31/00A61P43/00
    • A61M5/3286A61M5/3291A61M25/0068A61M2025/0057A61M2025/0073
    • The invention provides surgical needles with a porous distal portion from which a liquid injectate will weep or ooze multidirectionally under injection pressure while the porous distal portion of the needle is inserted into a body surface. The porous distal portion of the needle can be fabricated from a porous carbon, metal, ceramic or polymer and preferably has a decreasing gradient of impedance to fluid flowing to the point of the needle to compensate for the falling off of injection pressure as fluid moves towards the point, thereby ensuring uniform weeping of the injectate along the injection course. The needle is adapted for attachment to a catheter or syringe. In another embodiment, a surgical assemblage is provided wherein a porous distal portion having similar fluid flow characteristics is located along the distal end of a catheter, and a needle point is attached to the distal end of the catheter (e.g., a steerable catheter) for piercing tissue. A guidance catheter can be used to direct the invention devices to a remote internal injection site. The invention devices and methods can be used to inject fluids (including those containing nucleic acids for gene therapy) into interior body walls or tissue, such as a beating heart, without substantial loss of fluid and without substantial damage to tissue caused by injectate.
    • 本发明提供具有多孔远端部分的手术针头,其中注射的液体将在注射压力下多次地渗漏或渗出,同时针的多孔远端部分插入体表面。 针的多孔远端部分可以由多孔碳,金属,陶瓷或聚合物制成,并且优选地具有减小的流向梯度的流体流向针的位置以补偿注射压力随着流体朝向 这点,从而确保注射过程中注射剂的均匀渗漏。 该针适于附接到导管或注射器。 在另一个实施例中,提供了一种手术组合件,其中具有类似流体流动特征的多孔远侧部分沿着导管的远端定位,并且针尖附接到导管的远端(例如,可导向的导管),用于 刺穿组织。 引导导管可用于将本发明装置引导到远程内部注射部位。 本发明的装置和方法可用于将流体(包括含有用于基因治疗的核酸的那些)注射到内部体壁或组织(例如打浆心脏)中,而没有明显的流体损失,并且对注射造成的组织没有实质的损害。
    • 10. 发明授权
    • Catheter apparatus with weeping tip and method of use
    • 导管器具有eping嘴和使用方法
    • US06547769B2
    • 2003-04-15
    • US09829022
    • 2001-04-09
    • Robert A. VanTasselDavid R. Holmes, Jr.Robert S. Schwartz
    • Robert A. VanTasselDavid R. Holmes, Jr.Robert S. Schwartz
    • A61M532
    • A61M5/3286A61M5/3291A61M25/0068A61M2025/0057A61M2025/0073
    • The invention provides surgical needles with a porous distal portion from which a liquid injectate will weep or ooze multidirectionally under injection pressure while the porous distal portion of the needle is inserted into a body surface. The porous distal portion of the needle can be fabricated from a porous carbon, metal, ceramic or polymer and preferably has a decreasing gradient of impedance to fluid flowing to the point of the needle to compensate for the falling off of injection pressure as fluid moves towards the point, thereby ensuring uniform weeping of the injectate along the injection course. The needle is adapted for attachment to a catheter or syringe. In another embodiment, a surgical assemblage is provided wherein a porous distal portion having similar fluid flow characteristics is located along the distal end of a catheter, and a needle point is attached to the distal end of the catheter (e.g., a steerable catheter) for piercing tissue. A guidance catheter can be used to direct the invention devices to a remote internal injection site. The invention devices and methods can be used to inject fluids (including those containing nucleic acids for gene therapy) into interior body walls or tissue, such as a beating heart, without substantial loss of fluid and without substantial damage to tissue caused by injectate.
    • 本发明提供具有多孔远端部分的手术针头,其中注射的液体将在注射压力下多次地渗漏或渗出,同时针的多孔远端部分插入体表面。 针的多孔远端部分可以由多孔碳,金属,陶瓷或聚合物制成,并且优选地具有减小的流向梯度的流体流向针的位置以补偿注射压力随着流体朝向 这点,从而确保注射过程中注射剂的均匀渗漏。 该针适于附接到导管或注射器。 在另一个实施例中,提供了一种手术组合件,其中具有类似流体流动特征的多孔远侧部分沿着导管的远端定位,并且针尖附接到导管的远端(例如,可导向的导管),用于 刺穿组织。 引导导管可用于将本发明装置引导到远程内部注射部位。 本发明的装置和方法可用于将流体(包括含有用于基因治疗的核酸的那些)注射到内部体壁或组织(例如打浆心脏)中,而没有明显的流体损失,并且对注射造成的组织没有实质的损害。