Abstract: A simple mechanism that provides the manipulations required to deliver a correct injection and also incorporates the safety modifications that are needed to prevent needlestick injury and ensure self destruct capability. A surprisingly simple and cheap modification to a sterile package for the standard syringe and needle can successfully be used to automate the medical skills needed to deliver a safe injection and dispose of the hazardous needle afterwards. The sterile package consists of a housing for the syringe barrel, which can telescope into a larger diameter hollow cap covering the syringe plunger. The syringe and needle are located fully inside this two-part packaging sheath, which completely encloses and protects them.

Abstract: The present invention is a pharmaceutical composition and method for controlling the release of a drug or vaccine to a patient where a slow, controlled release of drug or antigen occurs over a considerable period of time after injection. The drug or vaccine is contained in sugar glass microspheres and then placed in an anhydrous liquid, preferably perfluorocarbon, so that the vaccine is protected against dissolution while remaining surrounded by anhydrous liquid. This simple non-toxic system, deliverable by current syringe or present or future needle-free systems, is inexpensive and reliable and aids in parenteral drug delivery or mass immunization campaigns by reducing the need for repeated injections.

Abstract: The present invention is a hand-operated injector device for injecting parenteral medications consisting of a cap, a plunger, a base, and a snap means. The cap contains a hollow central finger which upon proper hand force, moves toward a narrow plunger with an ability to slide into an annular wide plunger within an self-contained injection capsule. The movement of the cap drives the narrow plunger toward a narrow injection orifice at the bottom the capsule containing liquid medicament through which, the medicament under high pressure, forms a liquid jet through subcutaneous tissue of the patient. The injector may contain an external spring assisted holder or an internal spring assisted holder where the central finger is modified so as to be spring loaded. Finally, the spring injector may contain a cocking tab and a reusable power case. The injector device requires little training to use, reduces pain, improves injection safety and eliminates the need for a check valve.