Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Barrel type plunger for use with a needle-retractable safety syringe and the syringe using the same










Image Number 5 for United States Patent #7789855.

The present invention provides an improved barrel type plunger for use with needle-retractable safety syringes. The plunger includes a barrel, a needle retracted trigger and a supporting member. A front portion of the barrel is fitted over a sealing rubber pad, a slotted hole is provided at a wall of the front portion of said barrel, a bearing piece is provided in the slotted hole, and one end of the bearing piece is connected to the front side wall of the slotted hole. The supporting member is releasably engaged in the barrel. After having released from the barrel, the supporting member is able to translate backwards under the action of a needle retraction force so that the bearing piece can be returned to such a position that the needle can be retracted backwards to the interior of the barrel.








 
 
  Recently Added Patents
Methods and apparatus for dynamic identification (ID) assignment in wireless networks
DNA promoters and anthrax vaccines
Distributive data capture
Sublingual coated tablet of fentanyl
Toy
Developing cartridge
Nut
  Randomly Featured Patents
Air freshener case
Contactless integrated circuit card with real-time protocol switching function and card system including the same
Louver device formed by sheet-like material
Process for preparing 4-aminopyrimidine compound
Garden stake
Optically-anisotropic film and liquid-crystal display device
Preparation of aromatic nitriles
Apparatus for automatically separating and detecting noise radio waves
Fixing device and image forming apparatus
Methods and compositions concerning antibodies that bind CD84-like polypeptides