Measuring and testing – Sampler – sample handling – etc. – Conduit or passageway section capture chamber
Patent
1996-12-19
1998-06-09
Biegel, Ronald L.
Measuring and testing
Sampler, sample handling, etc.
Conduit or passageway section capture chamber
324439, 324693, 324705, G01N 2702
Patent
active
057637954
ABSTRACT:
A sample apparatus includes a sampling valve having a sample inlet through which a sample such as urine is introduced from the outside of the sampling valve to the inside thereof; a sample outlet through which the sample is sent from the inside of the sampling valve to the outside thereof; and a sampling passage for setting apart a predetermined amount of the sample between the sample inlet and sample outlet. It further includes a first electrode section located close to the sample inlet so that the sample can come into contact with the first electrode section, a second electrode section located close to the sample outlet so that the sample can come into contact with the second electrode section, and a sensor circuit for measuring the impedance between the first and second electrode sections and for using the measured impedance to determine whether or not the sampling passage contains a predetermined amount of the sample. Preferably, the first and second electrode sections each include a pair of electrodes separated from each other, wherein one of each of the electrodes of the electrode sections is connected to the sensor circuit while the other electrodes are short-circuited to each other.
REFERENCES:
patent: 2656508 (1953-10-01), Coulter
patent: 4152391 (1979-05-01), Cabrera
patent: 4891575 (1990-01-01), Kogo et al.
patent: 4957008 (1990-09-01), Proni et al.
patent: 5524496 (1996-06-01), Nagai et al.
patent: 5542305 (1996-08-01), Hollinger
Nishimoto Hidetoshi
Ooyama Yasuhiro
Seshimo Hiroyuki
Tanaka Yosuke
Biegel Ronald L.
TOA Medical Electronics Co., Ltd.
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