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    Apparatus and method for mixing and dispensing bone cement
    3.
    发明授权
    Apparatus and method for mixing and dispensing bone cement 有权
    用于混合和分配骨水泥的设备和方法

    公开(公告)号：US06120174A

    公开(公告)日：2000-09-19

    申请号：US231894

    申请日：1999-01-14

    申请人： Stephen H. Hoag ,  Kirt L. Case ,  Kwan-Ho Chan ,  Jeffrey B. Boggs ,  Christopher A. Finn ,  Scott B. Miller

    发明人： Stephen H. Hoag ,  Kirt L. Case ,  Kwan-Ho Chan ,  Jeffrey B. Boggs ,  Christopher A. Finn ,  Scott B. Miller

    IPC分类号： A61F2/00 ,  A61F2/46 ,  B01F11/00 ,  B01F13/00 ,  B01F13/06

    CPC分类号： B01F13/06 ,  A61B17/8825 ,  A61B17/8827 ,  B01F11/0082 ,  B01F13/002 ,  A61B2017/8838 ,  A61F2002/30561 ,  A61F2002/30591 ,  A61F2002/4685 ,  A61F2250/007 ,  A61F2250/0071 ,  B01F2215/0029

    摘要： A method and apparatus for mixing bone cement which produces bone cement essentially free of entrained air. The apparatus includes a cartridge having two telescoping cylinders. The outer cylinder receives a cap thereon which hermetically seals the cartridge. The cap includes an outlet port in which a break-away agitator is installed and a port for connection of a vacuum pump. In use, a desired vacuum pressure is drawn on the cartridge and the inner cylinder is allowed to be drawn into the outer cylinder while the vacuum is being drawn, whereupon the inner cylinder automatically stops moving relative to the outer cylinder when the desired vacuum pressure is reached. Mixing of the bone cement is then performed under the partial vacuum thereby created. The agitator paddles provide a scraping action against both inner cylinder walls of the telescoping cylinders thereby improving mixing. After mixing, the agitator is broken away, an appropriate nozzle is attached to the cartridge and the cartridge is inserted into a cement gun. The leading portion of the bone cement develops a convex profile when axially advanced through the cartridge and the piston plug includes a tapered protrusion which generally corresponds to the profile of the bone cement. The cap and paddles are also shaped correspondingly to the convex profile developed by the bone cement, resulting in substantially all of the bone cement being squeezed from the cartridge. An air escape passage is also provided to vent air contained within an annular gap between the agitator shaft and the cap upon initial being essentially free from entrained air.

    摘要翻译： 一种用于混合基本上不含夹带空气的骨水泥的骨水泥的方法和装置。 该装置包括具有两个伸缩筒的筒。 外筒在其上容纳密封盒的盖。 该盖包括其中安装有分离搅拌器的出口和用于连接真空泵的端口。 在使用中，在筒上抽出希望的真空压力，并且在抽真空的同时允许内筒被吸入外筒，于是当期望的真空压力为期望时，内筒自动停止相对于外筒移动 到达。 然后在由此产生的部分真空下进行骨水泥的混合。 搅拌器桨叶对伸缩筒的两个内筒壁提供刮擦作用，从而改善混合。 混合后，将搅拌器分开，将适当的喷嘴连接到墨盒，墨盒插入水泥枪。 骨水泥的引导部分当轴向前进穿过药筒时形成凸形轮廓，并且活塞塞包括通常对应于骨粘固剂轮廓的锥形突起。 帽和桨也相应于由骨水泥开发的凸形轮廓成形，导致基本上所有的骨水泥被从筒中挤出。 还设置有空气逸出通道，用于在初始基本上没有夹带的空气时排出容纳在搅拌器轴和盖之间的环形间隙内的空气。

    Bone cement injector gun
    8.
    发明授权
    Bone cement injector gun 失效
    骨水泥注射枪

    公开(公告)号：US5893488A

    公开(公告)日：1999-04-13

    申请号：US877324

    申请日：1997-06-17

    申请人： Stephen H. Hoag ,  Gregory C. Stalcup ,  Kwan-Ho Chan ,  Michael E. Hawkins ,  Kirt L. Case

    发明人： Stephen H. Hoag ,  Gregory C. Stalcup ,  Kwan-Ho Chan ,  Michael E. Hawkins ,  Kirt L. Case

    IPC分类号： A61F2/46 ,  B05C17/01 ,  A67D5/42

    CPC分类号： B05C17/01 ,  A61B17/8822 ,  A61B17/8833 ,  Y10T74/1553 ,  Y10T74/1598 ,  Y10T74/20558 ,  Y10T74/206

    摘要： A paste injector gun, especially adapted for injecting bone cement, has first and second mechanical advantages. In a first embodiment, the first and second mechanical advantages are produced by two fulcrums engageable during different portions of the trigger stroke. In a second embodiment, the first and second mechanical advantages are produced by a fixed fulcrum and a rotatable fulcrum. The first mechanical advantage is greater than the second such that the first facilitates pressurizing the bone cement and the second facilitates high volume dispensing of the bone cement. The injector gun also includes a pair of U-shaped slots. One of the slots is sized to accept a large cement cartridge and the other slot is sized to accept a small cement cartridge. An alternative embodiment provides a hinged cartridge retaining gate for closing the U-shaped slots for positive retention of the cartridge.

    摘要翻译： 特别适用于注射骨水泥的糊注射器枪具有第一和第二机械优点。 在第一实施例中，第一和第二机械优点由在触发行程的不同部分可接合的两个支点产生。 在第二实施例中，第一和第二机械优点由固定的支点和可旋转的支点产生。 第一机械优点大于第二机械优点，使得第一机械优点使得第一机械优点有利于对骨粘固剂进行加压，而第二机构有助于骨水泥的高体积分配。 喷射器枪还包括一对U形槽。 其中一个槽的尺寸适于接纳大型水泥筒，另一个槽的尺寸适于接纳一个小水泥筒。 一个替代实施例提供了一个用于封闭U形槽的铰链盒保持门，用于保持盒的正向保持。

    Bone cement injector gun
    9.
    发明授权
    Bone cement injector gun 失效
    骨水泥注射枪

    公开(公告)号：US5638997A

    公开(公告)日：1997-06-17

    申请号：US529814

    申请日：1995-09-18

    申请人： Michael E. Hawkins ,  Stephen H. Hoag ,  Kirt L. Case ,  Kwan-Ho Chan

    发明人： Michael E. Hawkins ,  Stephen H. Hoag ,  Kirt L. Case ,  Kwan-Ho Chan

    IPC分类号： A61F2/46 ,  B05C17/01 ,  A67D5/42

    CPC分类号： A61B17/8833 ,  A61B17/8822 ,  B05C17/01 ,  Y10T74/1553 ,  Y10T74/1598 ,  Y10T74/20558 ,  Y10T74/206

    摘要： A paste injector gun, especially adapted for injecting bone cement, has first and second mechanical advantages corresponding to different portions of the trigger stroke. The first mechanical advantage is greater than the second such that the first facilitates pressurizing the bone cement and the second facilitates high volume dispensing of the bone cement. The injector gun also includes a pair of U-shaped slots. One of the slots is sized to accept a large cement cartridge and the other slot is sized to accept a small cement cartridge.

    摘要翻译： 特别适用于注射骨水泥的糊注射器枪具有对应于触发冲程的不同部分的第一和第二机械优点。 第一机械优点大于第二机械优点，使得第一机械优点使得第一机械优点有利于对骨粘固剂进行加压，而第二机构有助于骨水泥的高体积分配。 喷射器枪还包括一对U形槽。 其中一个槽的尺寸适于接纳大型水泥筒，另一个槽的尺寸适于接纳一个小水泥筒。

    Syringe assembly
    10.
    发明授权
    Syringe assembly 失效
    注射器总成

    公开(公告)号：US4405317A

    公开(公告)日：1983-09-20

    申请号：US306954

    申请日：1981-09-30

    申请人： Kirt L. Case

    发明人： Kirt L. Case

    IPC分类号： A61M5/315 ,  A61M5/00

    CPC分类号： A61M5/31596 ,  A61M2005/31598

    摘要： In a syringe assembly comprising an outer barrel for a powder medicament, an inner barrel telescopically mounted in the outer barrel for diluent, seal means isolating the powder and diluent compartments comprising a plug member made of a resilient material sealingly engaging in the discharge opening of the inner barrel, plunger means mounted on the discharge end of the inner barrel including a hollow plug chamber closed at one end remote from the discharge end of the inner barrel by a wall having a plurality of discharge openings therein, said plug adapted upon pressure buildup in the inner barrel to be displaced axially outwardly into said plug chamber to permit flow of diluent from the inner barrel to the powder compartment.

    摘要翻译： 在包括用于粉末药物的外筒的注射器组件中，可伸缩地安装在用于稀释剂的外筒中的内筒，用于隔离粉末和稀释剂隔室的密封装置，所述密封装置包括由密封地接合在 内筒，柱塞装置，其安装在内筒的排出端上，包括一中空塞柱室，该中空塞塞室在远离内筒出料端的一端通过其内具有多个排放孔的壁封闭， 内筒将轴向向外移动到所述塞子室中，以允许稀释剂从内筒流动到粉末隔室。