Optics: measuring and testing – Sample – specimen – or standard holder or support – Fluid containers
Patent
1992-05-22
1995-05-02
Warden, Robert J.
Optics: measuring and testing
Sample, specimen, or standard holder or support
Fluid containers
356 39, G01N 3348, G01N 2100
Patent
active
054124662
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.
REFERENCES:
patent: 4131899 (1978-12-01), Christou
patent: 4338024 (1982-07-01), Bolz et al.
patent: 4550326 (1985-10-01), Allen et al.
patent: 4756427 (1988-07-01), Gohde et al.
patent: 4988619 (1991-01-01), Pinkel
patent: 5173740 (1992-12-01), Fukuda et al.
Snider Theresa T.
TOA Medical Electronics Co., Ltd.
Warden Robert J.
LandOfFree
Apparatus for forming flattened sample flow for analyzing partic does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for forming flattened sample flow for analyzing partic, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for forming flattened sample flow for analyzing partic will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1141513