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
Authenticating and off-loading IPTV operations from mobile devices to fixed rendering viewing devices
Mounting structure, electro-optical apparatus, and touch panel
Tools and methods for yield-aware semiconductor manufacturing process target generation
Digital IF demodulator for video applications
Subband SNR correction in a frequency selective scheduler
Change management automation tool
Corner wrap for use with a pallet
  Randomly Featured Patents
Brush with a thin handle
Battery failure compensation for a power supply used in an implantable defibrillator
Vision system for monitoring humans in dynamic environments
Method for optimizing a conductor-path layout for a print head of an ink printing device, and a conductor-path layout for such a print head
Concentrated, substantially non-aggregated casein micelles as a fat/cream substitute and a method for reducing the fat content in food products
Gas turbine plant
Radar beam steering with remote reflectors/refractors
Wearable electronic device
Protective garment having reversible shell for military or paramilitary firefighter
Electronic document reader