Development of portable needle puncture device that can independently apply rotation and alternating vibration to pair of half-divided microneedles mimicking mosquitoes

Abstract

We have developed a needle puncture mechanism that imitates the puncture action of mosquitoes. This mechanism employs two pairs of two-halved needles, acting as one hollow microneedle. This mechanism applies the ability of rotation and alternating vibration motions to the two-halved microneedle. The rotational motion and alternating vibration can each be independently controlled. The motor drives the rotation directly, while the alternating vibration is accomplished by merging magnetic force and sliding friction. The entire mechanism was designed using three-dimensional CAD and assessed to ascertain if it could reduce needle puncture resistance.