The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 02, 1995
Filed:
May. 22, 1992
Shinichi Ogino, Kobe, JP;
Toa Medical Electronics Co., Ltd., Kobe, JP;
Abstract
An apparatus for forming a flattened sample flow by passing a sample (liquid specimen) containing particle components such as blood and urine, in a broad, thin, flat flow. This apparatus is preferably used in an apparatus for analyzing particle images by emitting a strobe light to a sample flat flow, and taking the still images of the particle components. More specifically, the cross section of a measuring passage of a flow cell is rectangular with a side ratio of one to several times, with a shape that gradually narrows in width only in one direction of the lead-in passage, and the discharge port at the front end of the sample nozzle has a flat opening, or small discharge ports are arranged horizontally in a row. The decreasing direction of the width in the lead-in passage and the shorter diameter direction of the flat discharge port or the direction of the small discharge ports arranged horizontally in a row are matched. Besides, the cross section of the measuring passage of the flow cell is rectangular with a side ratio of one to several times, and sheath liquid dividing means disposed at the discharge port upstream side of the sample nozzle for dividing the sheath liquid into two symmetrical flows. The sample nozzle is placed so that the discharge port may be positioned at the converging region of the sheath liquid. For further enhancing the flatness of the sample flow, a sample nozzle having a flat discharge port, or plural discharge ports disposed horizontally in a row is used.