| 摘要 |
PROBLEM TO BE SOLVED: To provide an intradermal injector to minimize bubbling or blistering of the skin during injection.SOLUTION: An intradermal injector comprises: a needle 48; and a collar 20 surrounding the needle and defining a collar cavity 22, a peripheral forward skin-contacting surface 66 of the collar having at least two portions separated from the needle and both sides of an injection site by a predetermined area which is sufficiently large to allow a patient's skin to move into the collar cavity to properly position the needle for intradermal delivery of the substance to the injection site to allow spread of the injected substance under the skin while inhibiting or preventing backpressure within the skin from forcing the substance out through the injection site. |
