Self-suction position-variable pipetting and blood sampling device

Abstract

The invention discloses a self-suction position variable type pipetting and blood sampling device which comprises a connecting air bag, an external ring sleeve, a downward extending tube body, a pipette, a blood sampling suction tube and a self-suction position adjusting mechanism. A floating ring body floats up and down to drive an outer side positioning ring to move up and down, so that a movable sealing bulge floats up and down on the outer side of the periphery of the blood sampling suction pipe, and the movable sealing bulge can float up and down to abut against the outer side of an upper vent hole or a lower vent hole of the blood sampling suction pipe in a sealed mode; in this way, selection of two kinds of sealing can be achieved, when the movable sealing protrusion abuts against the outer side of the upper vent hole in a sealed mode, the blood sampling column in the blood sampling suction pipe stops sucking to the lower vent hole, and when the movable sealing protrusion abuts against the outer side of the lower vent hole in a sealed mode, the blood sampling column in the blood sampling suction pipe stops sucking to the upper vent hole. In this way, two structural selections with different blood sampling ranges are formed, and use is flexible.

Description

technical field [0001] The invention relates to a self-priming position-variable liquid transfer blood sampling device. Background technique [0002] At present, the existing pipette is a common tool for liquid analysis in medical departments such as hospitals. Its structure generally includes a top air bag, an external ring sleeve, a pipette, and a capillary. Install the pipette inside the ring sleeve, the lower end of the pipette extends to the outside of the lower end of the outer ring sleeve, insert the capillary inside the lower end of the pipette, and open a vent hole on one side of the capillary, so that the capillary can pass through the capillary. After the capillary contacts the blood, the blood will automatically rise to the vent hole in the capillary to achieve blood collection, and then squeezed by the air bag, the collected blood is dripped into the diluent to form a diluent dripped into the blood, and then squeezed through the air bag. Pressure and expansion ...

AI Technical Summary

Problems solved by technology

[0002] At present, the existing pipette is a common tool for analyzing liquids in hospitals and other medical departments. Its structure generally includes a top air bag, an external ring, a pipette, and a capillary. Install the pipette inside the ring sleeve, the lower end of the pipette extends to the outside of the lower end of the outer ring sleeve, insert the capillary inside the lower end of the pipette, and open a vent hole on one side of the capillary, so that the capillary can pass through Function, after the capillary touches the blood, the blood will automatically rise in the capillary to the vent hole to realize blood collection, and then squeezed by the airbag, so that the collected blood drops into the diluent to form a diluent that drips into the blood, and then squeezed through the airbag Pressure and expansion to draw diluent, pipetting and other follow-up operations; but such a capillary can only collect blood in one range, and cannot be adjusted to achieve the use of two ranges, which makes the use of the device less flexible

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