Nested springs and a pre-positioned guard actuate the needle while preventing accidental sticks and inadvertent activation.
Positioning the outermost spring turn on the housing exterior reduces device diameter while preventing material deformation from high pre-tensioned forces.
Coaxial needle electrodes measure tissue impedance to identify target tissues, preventing accidental injections caused by unreliable aspiration methods.
A case aligns a user device camera to capture distinctive features of a drug delivery device for automated identification.
Pulsatile vacuum agitates fat cells while motorized injection prevents over-pressurization, reducing incisions needed during liposuction.
Toothed gearing translates linear motion into controlled plunger movement, resolving the trade-off between injection precision and device complexity.