Needle-free jet injector
Spring- or compressed-gas-powered injector that fires a metered dose (typically 0.1-0.2 mL) through a micrometric orifice as a high-pressure jet, penetrating intact epidermis without a needle.
How it is used
Used to anesthetize the donor and recipient areas in hair transplantation, and in dermatology for intradermal corticosteroids and minor cutaneous procedures, avoiding the pain and anxiety of needle puncture in patients who require dozens of injections.
Clinical tip
It only infiltrates the first few millimeters of dermis, so it is typically used as superficial anesthesia prior to deeper infiltration with a conventional needle; the anesthetic reservoir must be emptied and autoclaved between patients to avoid cross-contamination.
Sources
This entry is part of the Instriq catalog, researched and written per specialty from real web research -- never generated or invented without verification -- and reviewed skeptically and independently before publication. How this catalog is written.
Image: Geni, Wikimedia Commons. License CC BY-SA 4.0. View original source.
