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
Pressure-applying member, fixing device, and image forming apparatus
Portable reading device with mode processing
Transfer formulas
Asynchronous loading of scripts in web pages
Ultrathin fluid-absorbent cores
Cryptographically generated addresses using backward key chain for secure route optimization in mobile internet protocol
Method and system for modifying satellite radio program subscriptions in a mobile vehicle
  Randomly Featured Patents
Process for manufacturing supported bimetallic or plurimetallic catalysts comprising one or more metals from group VIII and at least one metal from group IV and the resultant catalysts thereof
Paper adjusting device
Method of preserving biological tissue specimens and method of infrared spectroscopic analysis which avoids the effects of polymorphs
Methods of preparing polymeric ketones
Device at the output side of a gas turbine
Cooking grill
Head covering
Electronically active primer layers for thermal patterning of materials for electronic devices
Systems and methods for amplified optical metrology
Pituitary adenylate cyclase activating peptide (PACAP)receptor 3 (R3) agonists and their pharmacological methods of use