Capillary blood sampling system with two removable caps and a pierceable membrane
(Product development)
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Technologies: injection molding
Materials: PP
Planned production volume: >1 000 000 units
My role: design engineer, industrial designer
Features: an external ridge on the tube for fixation in automatic mixers. The tube has a graduation mark at 200 µL, and a frosted writing area. Two removable caps:
- a cap for attaching a blood collection collector;
- a cap with a pierceable membrane, ensuring hermetic sealing and allowing blood sampling without removing the cap
Application: designed for obtaining capillary blood samples and performing hematological tests for glucose level determination
The test tube looks as if it were made of polycarbonate - but that’s just for visual effect. In reality, even special PP copolymers that offer noticeably higher transparency -- and this part is required to be transparent -- cannot compete with PC in this regard. The level of transparency would be similar to that of a disposable syringe
One might ask: why not use polycarbonate, then? Polycarbonate is very rigid, which would prevent squeezing the tube like a small bottle to “draw” blood during collection
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