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
Data encoding and decoding apparatus and method thereof for verifying data integrity
Traffic signal mapping and detection
Wiring structure in a semiconductor device, method of forming the wiring structure, semiconductor device including the wiring structure and method of manufacturing the semiconductor device
Systems and methods for excluding undesirable network transactions
Adjustable draw bar for trailer hitches
Method of transmitting and receiving a paging message in a mobile communication system
Account managing device, image processing system, and storage medium
  Randomly Featured Patents
Seal bead
Method and system for producing synthetic gas from biomass by high temperature gasification
Method of conducting an EMV payment process using IRFM
Boat
Low velocity aortic cannula
Coffee machine
Faucet
Binary working fluid air conditioning system
Assay of monokines
Beverage container belt