公开(公告)号：US07766879B2

公开(公告)日：2010-08-03

申请号：US12044354

申请日：2008-03-07

Applicant: Chee Leong Tan ,  Jon Moh ,  Stanley Sim Tiong Yee

Inventor： Chee Leong Tan ,  Jon Moh ,  Stanley Sim Tiong Yee

IPC: A61M5/178

CPC classification number: A61M25/0693 ,  A61B5/15003 ,  A61B5/150213 ,  A61B5/150389 ,  A61B5/150488 ,  A61B5/150572 ,  A61B5/150633 ,  A61B5/150732 ,  A61B5/1545 ,  Y10S604/90

Abstract: A needle assembly includes a transparent or translucent housing with a fluid inlet end, a fluid outlet end, a flashback chamber, and a venting mechanism therebetween. Substantially axially aligned inlet and outlet cannulas extend from the housing and communicate with the chamber. A sealable sleeve covers the external end of the outlet cannula. Relative volumes of the cannulas, the chamber, and the sleeve are selected to provide rapid reliable flashback indicative of venous entry with an internal vent positioned within the housing so as to divide the interior into first and second chambers, with the second chamber being adapted to maintain a negative pressure therein relative to the external environment so as to inhibit leakage of blood from the needle on withdrawal from the patient.

Abstract translation: 针组件包括具有流体入口端的透明或半透明壳体，流体出口端，回流室和它们之间的排气机构。 基本上轴向对准的入口和出口插管从壳体延伸并与腔室连通。 可密封套筒覆盖出口插管的外端。 插管，腔室和套管的相对体积被选择以提供指示静脉入口的快速可靠闪回，其中内部通气口位于壳体内，以便将内部分成第一和第二腔室，第二腔室适于 在其中保持相对于外部环境的负压，以便在从患者撤出时抑制血液从针头泄漏。

公开(公告)号：US20090227953A1

公开(公告)日：2009-09-10

申请号：US12044354

申请日：2008-03-07

Applicant: Chee Leong Tan ,  Jon Moh ,  Stanley Sim

Inventor： Chee Leong Tan ,  Jon Moh ,  Stanley Sim

IPC: A61M5/32

CPC classification number: A61M25/0693 ,  A61B5/15003 ,  A61B5/150213 ,  A61B5/150389 ,  A61B5/150488 ,  A61B5/150572 ,  A61B5/150633 ,  A61B5/150732 ,  A61B5/1545 ,  Y10S604/90

Abstract: A needle assembly includes a transparent or translucent housing with a fluid inlet end, a fluid outlet end, a flashback chamber, and a venting mechanism therebetween. Substantially axially aligned inlet and outlet cannulas extend from the housing and communicate with the chamber. A sealable sleeve covers the external end of the outlet cannula. Relative volumes of the cannulas, the chamber, and the sleeve are selected to provide rapid reliable flashback indicative of venous entry with an internal vent positioned within the housing so as to divide the interior into first and second chambers, with the second chamber being adapted to maintain a negative pressure therein relative to the external environment so as to inhibit leakage of blood from the needle on withdrawal from the patient.

公开(公告)号：US20100145226A1

公开(公告)日：2010-06-10

申请号：US12570553

申请日：2009-09-30

Applicant: Chee Leong Tan

Inventor： Chee Leong Tan

IPC: A61B5/15

CPC classification number: A61B5/1545 ,  A61B5/15003 ,  A61B5/150213 ,  A61B5/150221 ,  A61B5/150389 ,  A61B5/150473 ,  A61M25/0693 ,  Y10S604/90

Abstract: A needle assembly includes a transparent or translucent housing with a fluid inlet end, a fluid outlet end, a flashback chamber and a venting mechanism therebetween. Substantially axially aligned inlet and outlet cannulas extend from the housing and communicate with the chamber. A sealable sleeve covers the external end of the outlet cannula. Relative volumes of the cannulas, the chamber and the sleeve are selected to provide rapid reliable flashback indicative of venous entry with an internal vent plug over the outlet of the flashback chamber to inhibit leakage of blood, from the needle on withdrawal from the patient.

Abstract translation: 针组件包括具有流体入口端的透明或半透明壳体，流体出口端，回流室和它们之间的排气机构。 基本上轴向对准的入口和出口插管从壳体延伸并与腔室连通。 可密封套筒覆盖出口插管的外端。 插管，腔室和套管的相对体积被选择以提供快速可靠的闪回，其指示静脉进入，在闪回室的出口处具有内部通气塞，以防止血液从患者身体抽出时从针中泄漏。

公开(公告)号：US08162896B2

公开(公告)日：2012-04-24

申请号：US12570553

申请日：2009-09-30

Applicant: Chee Leong Tan

Inventor： Chee Leong Tan

IPC: A61M5/178

CPC classification number: A61B5/1545 ,  A61B5/15003 ,  A61B5/150213 ,  A61B5/150221 ,  A61B5/150389 ,  A61B5/150473 ,  A61M25/0693 ,  Y10S604/90

Abstract: A needle assembly includes a transparent or translucent housing with a fluid inlet end, a fluid outlet end, a flashback chamber and a venting mechanism therebetween. Substantially axially aligned inlet and outlet cannulas extend from the housing and communicate with the chamber. A sealable sleeve covers the external end of the outlet cannula. Relative volumes of the cannulas, the chamber and the sleeve are selected to provide rapid reliable flashback indicative of venous entry with an internal vent plug over the outlet of the flashback chamber to inhibit leakage of blood from the needle on withdrawal from the patient.

Abstract translation: 针组件包括具有流体入口端的透明或半透明壳体，流体出口端，回流室和它们之间的排气机构。 基本上轴向对准的入口和出口插管从壳体延伸并与腔室连通。 可密封套筒覆盖出口插管的外端。 插管，腔室和套管的相对体积被选择以提供快速可靠的闪回，其指示静脉进入，在闪回室的出口处具有内部通气塞，以在从患者撤出时抑制血液从针头泄漏。