INJECTION SYRINGE INCLUDING DEVICE FOR PREPARATION OF INJECTIO

摘要

This invention relates to an injection syringe including a device for preparation of an injectio in situ, useful to the injectio which is liable to suffer chemical changes if left for long time in the state of solution or dispersion ready to inject. This invention particularly relates to an injection syringe portable by a patient who may prepare a necessary injectio for himself in situ with use of a device included in the syringe which will automatically perform an injection with a prescribed dosage. This invention is intended to offer an injection syringe including a device for preparation of an injectio, whereby mechanical impacts affecting to the medicine and consequently, chemical changes with a medicine would be minimized during the step of dissolving the medicine. The syringe as noted is especially useful for preparation of injectio and injection of human growth hormones, interferon and various polypeptides which are environmentally sensitive nature and liable to suffer chemical changes if left for long time in the state of solution or dispersion.