公开(公告)号：US3216240A

公开(公告)日：1965-11-09

申请号：US22052662

申请日：1962-08-30

Applicant: COULTER ELECTRONICS

Inventor： ADLER STANFORD L ,  COULTER WALLACE H

IPC: A61B5/145 ,  G01N11/14 ,  G01N33/49

CPC classification number: G01N33/4905 ,  G01N11/14

公开(公告)号：GB1057147A

公开(公告)日：1967-02-01

申请号：GB4653663

申请日：1963-11-25

Applicant: COULTER ELECTRONICS

Inventor： COULTER WALLACE HENRY ,  ADLER STANFORD L

IPC: A61B5/145 ,  G01N11/14 ,  G01N33/49

Abstract: 1,057,147. Photo-electric coagulometers. COULTER ELECTRONICS Inc. Nov. 25, 1963, No. 46536/63. Heading G1A. [Also in Division F1] The length of time taken for a sample of blood plasma to coagulate after the addition of a measured amount of thromboplastin is determined by rotating a disc magnetically partly immersed in the sample and detecting when the rotation is stopped by the increasing viscosity of the coagulating blood. The disc has either graded opacity or an opaque region and is arranged to modulate the light falling on a photo-cell from a source. The photo-cell output is applied to a recorder, the disappearance of the A. C. component indicating the stopping of the disc. A plurality of sample bowls each with its own disc is provided in a circular plate which is stepped round to position each bowl at a testing station in turn. Hot air is blown on to the underside of the bowls to bring them to body temperature and the thromboplastin is likewise heated to body temperature before addition to the sample at the testing station.