Tissue disruption

Jet injectors use a high-speed fluid jet to pierce the skin, and can be used not only to deliver drugs, but also to release capillary blood, much like a lancet. This work provides new histological information about tissue disruption induced by a circular jet, a lancet-inspired slot-shaped jet, and a lancet prick. The slot-shaped jet caused shallower penetration with smaller wound volume but disrupted more vascular endothelium than the circular jet. The findings suggest that jet injection can be designed to release capillary blood in volumes similar to that of a lancet prick, and thus be useful in blood testing. read more