Apparatus for taking blood samples from a patient

摘要

A device for use with conventional blood receptacle assemblies provides increased safety and stability for blood collecting operations. The blood drawing device includes a holding element for securing a blood collecting assembly and a clamping mechanism for clamping a blood sampling tube. A sliding mechanism is provided for sliding the blood sampling tube into engagement with the blood collecting assembly. In an alternative embodiment, the blood drawing device may be configured to include a carriage assembly moveably attached to a base and holding a plurality of blood tubes for blood collection. A servo motor moves the carriage assembly relative to the base. A mechanism reciprocates the blood tube between a first and second position such that movement of the tube causes the tube to engage a needle inside the blood collecting assembly. The device may further include sensors for detecting the fill level of the tube and a sensor that detects the insertion of the tube into the opening of the carriage assembly to activate the servo motor to reciprocally move the tube.