Abstract: A syringe having a body connected with a barrel and a fastening unit for fastening of the double-edged needle at the other end. A plunger having ratchet teeth is located in the body. A stopper pawl which prevents return movement of the plunger is installed with a possibility of interaction with the plunger. A drive unit including a rotary handle is fixed on the body and a drive pawl is fixed on the handle. A compensator of a cartridge length is located in the body. A guiding element is positioned between the barrel and the fastening unit. The fastening unit is made in the form of a hollow sphere with a slot and a holder of double-edged needle which is fixed in the slot with the possibility of moving in the slot on the generatrix of a surface of the sphere to an angle up to 180.degree.. An aspiration element is fixed on one end of the plunger.
Type:
Grant
Filed:
June 3, 1997
Date of Patent:
April 6, 1999
Assignee:
Medinfodent Ltd.
Inventors:
Valentin Sergeevich Butuzov, Igor Alexandrovich Chougailov