公开(公告)号：US5533970A

公开(公告)日：1996-07-09

申请号：US314030

申请日：1994-09-28

申请人： Howard S. Berger ,  Robert B. Odell ,  Sandor Gyure

发明人： Howard S. Berger ,  Robert B. Odell ,  Sandor Gyure

IPC分类号： A61M5/178 ,  A61M5/32 ,  A61M5/34 ,  A61M5/50 ,  A61M5/00

CPC分类号： A61M5/322 ,  A61M5/347 ,  A61M5/502

摘要： A retractable needle syringe includes a barrel having an inside surface defining a chamber, an open proximal end and a distal end. An elongate plunger is slidably positioned in fluid-tight engagement with the inside surface of the barrel. The plunger includes a distal end, a proximal end and a radially directed projection on its distal end. A movable carrier is positioned in fluid-tight engagement with the inside surface of the barrel. The carrier includes an outside surface, a distal end, a proximal end, and a passageway therethrough in fluid communication with the chamber. The proximal end of the carrier includes an open-ended groove which is sized and shaped to receive the plunger projection. The groove includes an axial portion and a circumferential portion. The plunger is movable axially so that the plunger projection can enter and exit the axial portion of the groove. Rotation of the plunger with respect to the carrier causes the projection to enter the circumferential portion of the groove, containing said projection so that said plunger rod can apply axially directed force and rotationally directed force to the carrier. A needle cannula projects outwardly from the distal end of the carrier. Control structure is provided to prevent movement of the carrier with respect to the barrel during normal use of the syringe and for allowing the carrier to be moved proximally into the chamber of the barrel through forces applied to the plunger.

摘要翻译： 可伸缩的针头注射器包括具有限定腔室的内表面，开口近端和远端的筒体。 细长柱塞可滑动地定位成与筒的内表面流体密封接合。 柱塞包括远端，近端和在其远端上的径向指示的突出部。 可移动的载体被定位成与筒的内表面流体密封地接合。 载体包括与腔室流体连通的外表面，远端，近端和穿过其的通道。 载体的近端包括开口的槽，其大小和形状适于容纳柱塞突起。 槽包括轴向部分和周向部分。 柱塞可轴向移动，使得柱塞突起可以进入和离开槽的轴向部分。 柱塞相对于托架的旋转使得突起进入容纳所述突起的凹槽的圆周部分，使得所述柱塞杆可以向载体施加轴向力和旋转力。 针套管从载体的远端向外突出。 提供控制结构以防止在注射器的正常使用期间载体相对于筒体的运动，并且允许载体通过施加到柱塞的力向近端移动到筒的腔室中。

公开(公告)号：US5735823A

公开(公告)日：1998-04-07

申请号：US335214

申请日：1994-11-07

申请人： Howard S. Berger

发明人： Howard S. Berger

IPC分类号： A61M5/32 ,  A61M39/04

CPC分类号： A61M5/3243 ,  A61M39/04 ,  A61M2039/042 ,  Y10S604/905

摘要： A safety needle device which can be used substantially as a regular syringe or with a "y" connector. The device includes an elongate barrel with a longitudinal axis and an inside surface defining a chamber which has an open proximal end and a distal end with a needle cannula. The needle cannula projects distally outwardly, and has a distal tip and a lumen in fluid communication with the barrel chamber. The device has a needle guard with a proximal first end and a distal second end. The guard is mounted for movement relative to the barrel from a retracted position in which the guard does not materially obstruct access to the distal tip of the needle cannula and an extended position where the guard substantially prevents inadvertent access to the distal tip of the needle cannula. The needle guard is releasably retained in the retracted position and locks in the extended position. The guard has at least one open slot which extends proximally from the second end. The slot is sized to accept the sidearm of a "y" connector when the needle penetrates the septum of the "y" connector and the bore of the connector is in fluid communication with the chamber of the barrel.

摘要翻译： 一种安全针装置，其可以基本上用作常规注射器或具有“y”连接器。 该装置包括具有纵向轴线的细长筒体和限定腔室的内表面，腔室具有开放的近端和具有针插管的远端。 针管向远端向外突出，并且具有远端尖端和与筒室流体连通的管腔。 该装置具有带有近端第一端和远端第二端的针护罩。 防护装置被安装成相对于枪管从缩回位置移动，其中护罩不会实质上阻碍对针套管的远侧末端的接近以及延伸位置，其中防护装置基本上防止无意中进入针套管的远端 。 针护罩可释放地保持在缩回位置并锁定在延伸位置。 护罩具有至少一个从第二端向近侧延伸的开口槽。 当针穿过“y”连接器的隔膜并且连接器的孔与筒的腔室流体连通时，槽的尺寸适于接受“y”连接器的侧臂。