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    • 11. 发明授权
    • Passive hemostatic sheath valve
    • 被动止血鞘
    • US07241276B2
    • 2007-07-10
    • US10636871
    • 2003-08-06
    • Jeffery C. ArgentineG. Ray Martin
    • Jeffery C. ArgentineG. Ray Martin
    • A61M5/178
    • A61M39/0606A61M2039/0258A61M2039/0273A61M2039/062A61M2039/0626A61M2039/0633A61M2039/0653
    • Vascular introducer sheaths incorporating improved passive valves which can maintain hemostasis around medical instruments. A passive sheath valve for creating a hemostatic seal around a medical instrument including a valve body having an upstream end, a downstream end, and a lumen having an inner and outer surface therethrough. The valve body defines a sealing aperture that is configured nominally to remain open. The upstream end includes an upstream annulus region defining at least one opening and the downstream end includes a downstream annulus region. Each annulus region and lumen outer surface define at least one chamber. The at least one opening transmits pressure from the upstream end through the upstream annulus region so as to allow a fluid to enter the at least one chamber.
    • 血管导管鞘包含改进的被动阀,可以在医疗器械周围保持止血。 一种用于在包括具有上游端,下游端和具有穿过其的内表面和外表面的内腔的阀体的医疗器械周围产生止血密封的被动护套阀。 阀体限定了一个密封孔,其被配置为名义上保持打开。 上游端包括限定至少一个开口的上游环区,并且下游端包括下游环区。 每个环形区域和管腔外表面限定至少一个腔室。 所述至少一个开口将压力从所述上游端传递通过所述上游环空区域,以允许流体进入所述至少一个室。
    • 12. 发明申请
    • Hemostatic valve system
    • 止血阀系统
    • US20070078395A1
    • 2007-04-05
    • US11223333
    • 2005-09-09
    • Arman Valaie
    • Arman Valaie
    • A61M5/178
    • A61M39/0613A61M2039/0633A61M2039/0653A61M2039/0686
    • A medical introducer apparatus for use in inserting an interventional device into a body vessel of a patient. The apparatus includes a housing having a proximal opening, a distal opening, and a chamber positioned between the openings. A sheath, defining a conduit for the interventional device, extends distally from the housing distal opening. A hemostatic valve system is provided in the housing chamber. The valve system includes a plurality of generally elastomeric valve members axially arranged in the chamber. The valve members each have a generally circular hole extending therethrough, which hole is sized for substantially leak-free passage of the interventional device. The valve members are aligned in the chamber to be sequentially penetrable by the interventional device, such that a hole in one valve member is covered by an adjoining valve member.
    • 一种用于将介入装置插入患者的身体容器中的医疗引入装置。 该装置包括具有近端开口,远端开口和位于开口之间的腔室的壳体。 限定用于介入装置的导管的护套从壳体远端开口向远侧延伸。 止血阀系统设置在容纳室中。 阀系统包括轴向布置在腔室中的多个大体上弹性的阀构件。 阀构件各自具有贯穿其中的大致圆形的孔,该孔的尺寸被设计成用于介入装置的基本上无泄漏的通道。 阀构件在腔室中对准以被介入装置依次穿透,使得一个阀构件中的孔被相邻的阀构件覆盖。
    • 17. 发明申请
    • MEDICAL FLUID FLOW CONTROL VALVE
    • 医用流体流量控制阀
    • US20010041872A1
    • 2001-11-15
    • US09126335
    • 1998-07-30
    • RAM H. PAUL JR.
    • A61M005/178A61M005/14
    • A61M39/0606A61M39/0613A61M2039/062A61M2039/0633A61M2039/064A61M2039/0653A61M2039/066
    • A valve (10) useful as a fluid flow check valve or as a self-sealing, penetrable, hemostatic valve for sealing a catheter introducer (12) includes a seal (26) which is highly resistant to tearing and leakage, yet is capable of accepting repeated penetrations by devices of a wide variety of diameters. The seal (26) is disk-shaped and is composed of a thermoplastic styrenic elastomer, such as a styrene-ethylene/butylene-styrene block copolymer, of very low durometer (a hardness of no more than about 30 Shore A). The seal (26) is preferably contained in a valve body (40) and is compressed between a valve seat (48) in the valve body (40) and a cap (56) connected to the valve body (40). The seal (26) includes at least one perforation (34) closed by such compression. This compression also provides the seal (26) with a proximal or upstream concave surface (30), making it highly resistant to inversion during repeated removals and manipulations of interventional devices passing through the valve (10). The valve (10) of the present invention is particularly advantageous in that it seals the introducer (12) with a high degree of effectiveness when no interventional device lies across its seal (26), and in that it offers a high resistance to tearing when penetrated by devices of large diameter. The valve (10) also allows the easy passage of devices without interfering with tactile feedback (nullfeelnull) from them.
    • 用作流体流动止回阀或用作密封导管引入器(12)的自密封,可穿透的止血阀的阀(10)包括密封件(26),其高度抵抗撕裂和渗漏,但是能够 接受由各种直径的装置重复的穿透。 密封件(26)是圆盘形的,并且由诸如苯乙烯 - 乙烯/丁烯 - 苯乙烯嵌段共聚物的热塑性苯乙烯弹性体组成,其硬度非常低(硬度不超过约30肖氏A)。 密封件(26)优选地包含在阀体(40)中并且在阀体(40)中的阀座(48)和连接到阀体(40)的盖(56)之间被压缩。 密封件(26)包括通过这种压缩而封闭的至少一个穿孔(34)。 这种压缩还使密封件(26)具有近侧或上游凹形表面(30),使得其在反复移除和操纵通过阀门(10)的介入装置的操作过程中非常耐反转。 本发明的阀(10)特别有利的是,当没有介入装置位于其密封件(26)上时,它以高效率的方式密封导引器(12),并且因为它提供了高的撕裂能力 穿透大直径的装置。 阀(10)还允许设备的容易通过,而不会干扰来自它们的触觉反馈(“感觉”)。
    • 18. 发明授权
    • Pressure actuated introducer valve
    • 压力导引阀
    • US06276661B1
    • 2001-08-21
    • US08744659
    • 1996-11-06
    • Robert James Laird
    • Robert James Laird
    • F16K707
    • A61B17/3462A61M39/0613A61M2039/062A61M2039/0633A61M2039/0646A61M2039/0653A61M2039/0673A61M2039/0686Y10T137/612
    • The invention provides highly adaptable valves for providing hemostasis about minimally invasive surgical implements such as guidewires and endovascular prosthetic delivery catheters. The valves generally comprise an elastomeric sealing body which will maintain hemostasis by contacting a surgical implement traversing the valve over a very small contact area. Preferably, the orifice is formed in a thin membrane which extends radially inward from a torroidal balloon having a relatively rigid outer rim and a flexible inner portion. When a vacuum is applied within such a balloon, the flexible inner portion pulls the membrane radially outward to expand the orifice diameter. A positive pressure can be applied within the torroidal balloon so that the balloon expands radially inward to block access through the valve.
    • 本发明提供了高度适应性的阀门,用于提供关于微创手术器械例如导丝和血管内修复输送导管的止血。 这些阀通常包括一个弹性体密封体,该弹性体密封体将通过在非常小的接触区域上接触穿过该阀的手术器械来维持止血。 优选地,孔口形成为从具有相对刚性的外缘和柔性内部的环形球囊径向向内延伸的薄膜。 当在这样的气球内施加真空时,柔性内部部分将膜径向向外拉动以扩大孔直径。 可以在环形球囊内施加正压力,使得气囊径向向内扩张以阻止通过阀门的通路。
    • 20. 发明授权
    • Sealing structure for medical instrument
    • 医疗器械密封结构
    • US5743884A
    • 1998-04-28
    • US493492
    • 1995-06-22
    • Harrith M. HassonNick Lakatos
    • Harrith M. HassonNick Lakatos
    • A61B17/34A61M39/06A61M5/178
    • A61B17/3462A61B17/3498A61B2017/3437A61M2039/0633A61M2039/064A61M2039/0653A61M39/06Y10T137/4486
    • A sealing structure for an elongate medical instrument. The sealing structure includes a first sealing member having a first body with oppositely facing first and second surfaces and a peripheral edge and a second sealing member having a second body with oppositely facing third and fourth surfaces and a peripheral edge. A housing has a peripheral wall to surroundingly engage the peripheral edges of the first and second bodies with the first and second sealing members in operative relationship, wherein the second surface on the first body facially abuts to the third surface on the second body. The first body has at least a first portion that is compressible and deformable, with the second body having at least a second portion that is likewise compressible and deformable. There is an opening in the first portion of the first body that extends through the first body from the first surface to the second surface. There is an opening in the second portion of the second body that extends through the second body from the third surface to the fourth surface. The openings in the first and second bodies are expandable to allow the first and second bodies to grippingly engage an elongate medical instrument extended through the openings in the first and second bodies with the first and second sealing members in operative relationship.
    • 用于细长医疗器械的密封结构。 密封结构包括第一密封构件,其具有第一主体和第二密封构件,第一主体具有相对的第一和第二表面以及外围边缘,第二密封构件具有第二主体,第二主体具有相对的第三和第四表面以及外围边缘。 壳体具有围绕第一和第二主体的周缘围绕第一和第二密封构件以周边接合的外围壁的操作关系,其中第一主体上的第二表面与第二主体上的第三表面相接。 第一主体具有可压缩和可变形的至少第一部分,其中第二主体具有至少第二部分,其同样是可压缩和可变形的。 在第一主体的第一部分中具有从第一表面延伸到第二表面的第一部分中的开口。 第二主体的第二部分中的开口从第三表面延伸穿过第二主体到第四表面。 第一和第二主体中的开口是可扩张的,以允许第一和第二主体以可操作的关系与第一和第二密封构件夹紧地接合延伸穿过第一和第二主体中的开口的细长医疗器械。