Final answer:
Needle-free injection systems are devices that deliver medication or vaccinations without a traditional needle piercing the skin, utilizing a high-pressure jet. They offer painless administration, reduce needlestick injuries, and can help improve patient compliance.
Step-by-step explanation:
Needle-Free Injection Systems
Needle-free injection systems, or needle-free injectors, are medical devices designed to deliver drugs into a patient's body without piercing the skin with a conventional needle. This technology utilizes a high-pressure, narrow jet of the injection liquid, which is forced through the epidermis and deposited under the skin or into muscle tissue. These devices can be used for both vaccinations and the administration of medication, offering a pain-free, less intimidating experience, especially beneficial for people with needle phobia. Manufacturers claim that they can also reduce needlestick injuries and improve patient compliance. Needle-free systems use various mechanisms, such as spring, gas, or Lorentz-force-powered injectors, that are capable of delivering a range of liquid volumes to meet different medical needs.