公开(公告)号：WO2003003134A1

公开(公告)日：2003-01-09

申请号：PCT/US2002/018415

申请日：2002-06-11

Applicant: COULTER INTERNATIONAL CORP.

Inventor： LI, William, Weigong ,  MINNICH, Helen, A.

IPC: G05D7/00

CPC classification number: G01N35/1097 ,  F16K11/0655 ,  G01F11/16

Abstract: A shear valve assembly comprises a pair of valve pads (10, 20) having opposing planar surfaces (21, 22) supported for relative sliding engagement. Each valve pad defines a plurality of liquid pathways by which a liquid can be passed from one pad to the other. The planar surface of one of the valve pads has an open channel formed therein, such channel having dimensions to accommodate a prescribed volume of liquid. Liquid is introduced into such channel via a first pair of pathways formed in the other valve pad, and liquid is dispensed from the open channel by a second pair of pathways that are brought into alignment with the channel during sliding movement between the valve pads. The valve assembly is particularly useful in blood analyzing instruments for isolating and dispensing relatively minute volumes (of the order of microliters) of whole blood for analysis.

Abstract translation: 剪切阀组件包括一对具有支撑用于相对滑动接合的相对的平坦表面（21,22）的阀垫（10,20）。 每个阀垫限定了多个液体通道，通过该通道液体可以从一个垫传递到另一个垫。 一个阀垫的平坦表面具有形成在其中的开放通道，该通道具有适应规定体积的液体的尺寸。 液体通过形成在另一个阀垫中的第一对通道引入到这种通道中，并且液体通过在阀垫之间的滑动运动期间与通道对准的第二对通道从开放通道分配。 阀组件特别适用于血液分析仪器，用于分离和分配全血的相对微小体积（微升数量级），用于分析。