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
Polymer bonded fibrous coating on dipped rubber articles skin contacting external surface
Electronic component
Electrophoresis display having touch screen and method for driving the touch screen
Identifying a characteristic of an individual utilizing facial recognition and providing a display for the individual
Systems and methods for minimization or elimination of diffusion effects in a microfluidic system
Method for operation of multi-layer-multi-turn high efficiency inductors
System and method for converting biomass to ethanol via syngas
  Randomly Featured Patents
Fixing binding strips to knitwear on linking machines
Methods and compositions for improving the production of products in microorganisms
Inverted microscope with integrated ray paths
Composition and method for the determination of cholesterol
Wearable personal sound delivery apparatus
Integration of non-noble DRAM electrode
Surface management at an airport
Method of forming built-up film of fluorinated aliphatic compound on substrate surface
Thrust reverser for a fan-type turbojet engine
Electro-optical system using light modulation