Analog heater control for medical instrument

G - Physics – 01 – N

Patent

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Details

G01N 37/00 (2006.01) G01N 1/28 (2006.01) G01N 33/49 (2006.01) G01N 33/86 (2006.01) G05D 23/19 (2006.01)

Patent

CA 2168966

An instrument (100) for determining a coagulation characteristic of blood, a blood fraction or a control (514) includes a heater (182, 192) and a heater control (322). The heater comprises a heater element (182) supported (192) in heat conducting relationship to the blood, blood fraction or control (514) when the instrument (100) is in use. The temperature of the heater element support (192) is monitored (188). The heater control (322) comprises a first temperature setpoint control (428) and a second temperature setpoint control (SETPoinT 2). The heater control (322) is coupled to the heater element support monitor (188), and the heater element (182) is coupled to the heater control (322) to be controlled thereby.

Un instrument (100) destiné à déterminer une caractéristique de coagulation de sang, d'une fraction sanguine ou d'un témoin (514) comprend un chauffage (182, 192) et une commande du chauffage (322). Le chauffage comporte un élément chauffant (182) supporté (192) dans une relation de conduction thermique avec le sang, la fraction sanguine ou le témoin (514) lorsque l'instrument (100) fonctionne. La température du support (192) de l'élément chauffant est contrôlée. La commande du chauffage (322) comporte une première commande de point fixe de température (428) et une seconde commande de point fixe de température (SETPoinT 2). La commande du chauffage (322) est couplée au contrôleur de l'élément de support du chauffage (188), et l'élément chauffant (182) est couplé à la commande du chauffage (322) afin d'être commandé par celle-ci.

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