公开(公告)号：US3799406A

公开(公告)日：1974-03-26

申请号：US33279873

申请日：1973-02-16

Applicant: BAXTER LABORATORIES INC

Inventor： ST JOHN P ,  PRIARONE P

IPC: B01L3/02 ,  G01F11/06

CPC classification number: B01L3/0234

Abstract: An apparatus for operating a liquid dispensing syringe in successive discrete equal forward strokes to thereby dispense corresponding equal successive amounts of liquid. The apparatus consists of a support in which the syringe is clamped in alignment with an actuating rod. The end of the rod is connected to the syringe plunger. The rod is connected through a unidirectional ball and cone coupling assembly and a coupling bar to the piston rod of an air-operated cylinder assembly arranged parallel to the actuating rod. The coupling bar extends through a yoke on which is mounted a micrometer for accurately establishing the reset position of the coupling bar, and thereby setting the length of the dispensing stroke of the syringe plunger.

Abstract translation: 一种用于在连续离散相等的前冲程中操作液体分配注射器从而分配相应的相等量的液体的装置。 该装置由支撑件组成，其中注射器与致动杆对准地夹紧。 杆的端部连接到注射器柱塞。 杆通过单向球和锥形联接组件和联接杆连接到平行于致动杆布置的气动缸组件的活塞杆。 联接杆延伸穿过其上安装有千分尺的轭，以准确地建立联接杆的复位位置，从而设定注射器柱塞的分配行程的长度。

公开(公告)号：US3787124A

公开(公告)日：1974-01-22

申请号：US3787124D

申请日：1972-09-21

Applicant: BAXTER LABORATORIES INC

Inventor： LOWY G ,  PRIARONE P ,  CULLIS H

IPC: G01N21/00 ,  G01N21/27 ,  G01N21/31 ,  G01N31/16 ,  G01N33/72 ,  G01N21/24

CPC classification number: G01N21/314

Abstract: A dual wavelength photometer for measuring the oxygenation characteristics of blood. Light is passed through two different filters on a rotating time-sharing wheel, one filter providing a reference wave length at which there is substantially no absorbance change as between oxygenated and deoxygenated blood, the other filter providing a wavelength at which there is maximum absorbance change. The two wavelengths are sequentially passed through a cuvette containing deoxygenated blood being treated at controlled rates with an oxygenating reagent and changes in absorbance are detected by a photomultiplier which generates corresponding signals. A time-shared difference-measuring circuit, synchronized with the rotating wheel, receives the signals and derives a resultant absorbance difference signal which is delivered to a recorder. The trace provided by the recorder shows the change in absorbance-difference with time as blood oxygenation proceeds.

Abstract translation: 用于测量血液氧合特性的双波长光度计。 光在旋转的分时轮上通过两个不同的过滤器，一个过滤器提供参考波长，在氧气和脱氧血液之间基本上没有吸光度变化，另一个过滤器提供最大吸光度变化的波长 。 两个波长依次通过含有用受氧剂处理的脱氧血液的比色皿，并通过产生相应信号的光电倍增管检测吸光度的变化。 与旋转轮同步的时间共享差分测量电路接收信号并导出被传送到记录器的合成吸收差信号。 由记录仪提供的踪迹显示随着血氧的进行，吸光度差异随时间的变化。