Jet injector

Uncommon card · No. 184785

A jet injector is a type of medical injecting syringe device used for a method of drug delivery known as jet injection. A narrow, high-pressure stream of liquid is made to penetrate the outermost layer of the skin (stratum corneum) to deliver medication to targeted underlying tissues of the epidermis or dermis (cutaneous injection, also known as classical intradermal injection), fat (subcutaneous injection), or muscle (intramuscular injection). The jet stream is usually generated by the pressure of a piston in an enclosed liquid-filled chamber. The piston is usually pushed by the release of a compressed metal spring, although devices being studied may use piezoelectric effects and other novel technologies to pressurize the liquid in the chamber. The springs of currently marketed and historical devices may be compressed by operator muscle power, hydraulic fluid, built-in battery-operated motors, compressed air or gas, and other means. Gas-powered and hydraulically powered devices may involve...

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