The disclosure relates to a syringe with a protector case which holds a glass carpule and permits the injection of the fluid contained in the carpule into the patient. The syringe is molded of plastic or other suitable material which is sterilizable. The device comprises seven parts including a body,...http://www.google.com/patents/US5437647?utm_source=gb-gplus-sharePatent US5437647 - Disposable self-shielding aspirating syringe
