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
Cell separation apparatus
Cosmetic container
Curable resin composition, cured product thereof, phenolic resin, epoxy resin, and semiconductor sealing material
Maize hybrid X95C379
AV player
Solar cell and manufacturing method thereof
Method of efficiently and safely adding and deleting channels in an amplified wavelength division multiplexing system
  Randomly Featured Patents
Method of fabricating a semiconductor device having a shallow source/drain region
Method and apparatus for optimizing the driving characteristics of a vehicle
Process for removing No.sub.x and So.sub.x from exhaust gas
Catalytic decomposition of sodium hypochlorite in highly alkaline solutions
Cultivated agarwood
Mezzanine integrated circuit interconnect
Thin-film magnetic head, magnetic head assembly, magnetic disk drive apparatus and method for manufacturing thin-film magnetic head
Condensed-ring thiophene derivatives and thienopyrimide derivatives, their production and use
Thinning of fuse passivation after C4 formation
Bookmark with protruding ear