Single use injection device

Claim 1

A single-use disposable syringe for providing a medicament for injection into a patient, the syringe comprising: a needle portion for injecting the medicament into the patient; a main body portion for storing the medicament and for expelling the medicament into the needle portion, the main body portion including: a compressible outwardly curved first end panel, a compressible outwardly curved second end panel, and a cylindrical bridging member, coupled to the first and second end panels, for separating the first and second end panels, to enable each of the end panels to become concave in response to complete compression of both of the end panels together; and a neck portion coupled to the needle portion and to the main body portion for directing the medicament from the main body portion to the needle portion; wherein the main body portion substantially collapses in response to complete compression of both of the end panels together to prevent the main body portion from being reformed and to expel the medicament out of the main body portion; wherein in response to partial compression of both of the end panels together, the main body portion partially collapses to expel some of the medicament out of the main body portion; and wherein the end panels, after partial compression of the end panels together and partial collapse of the main body portion, expand to reform the outwardly curved end panels of the main body portion, thereby drawing fluid into the main body portion and aspirating the needle portion.