Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Method and apparatus for sequential delivery of multiple injectable substances stored in a prefilled syringe










Image Number 2 for United States Patent #6866653.

A syringe, which may be pre-filled, and a method of using the syringe is disclosed to provide sequential injection of two different fluids without mixing thereof. The syringe comprises in a first version a plunger and an intermediate disc sealingly disposed within a generally cylindrical barrel, with an outlet portion distal of the barrel, the outlet portion being generally larger in diameter so that as the disc is advanced into it far enough to substantially inject the first fluid the disc loses sealing engagement and the second fluid is then expelled around the disc and through the syringe opening. Baffles are provided within the outlet portion to prevent the disc from inadvertently sealing the opening, and channels may be provided around the baffles. In a second version a bag is provided adjacent the plunger, with the first fluid being contained within the barrel and the second fluid being contained within the bag, and at least one barb is provided in the bottom of the syringe to burst the bag after the first fluid is expelled to thereby expel the second fluid.








 
 
  Recently Added Patents
Recombinant vectors for use in position-independent transgene expression within chromatin
Sealing member for piezoelectric resonator device, and piezoelectric resonator device
Inducement of organogenetic tolerance for pancreatic xenotransplant
Vehicle fender
Analysis of stress impact on transistor performance
(4932
RF power amplifier circuit with mismatch tolerance
  Randomly Featured Patents
Basket for processing thin plates
Selenidization passivation
Foldable vaso-occlusive member
Method of manufacturing tubular vibration-insulating bushing
Apparatus and method for cooling an advancing yarn having relative transverse movement between the yarn and cooling surface
Method for flexible modifications to a packet
Fuel injection system for single or multiple cylinder internal combustion engines
System and method for retrieving entities and integrating data
Beverage container
Recording and reproducing apparatus adapted to selectively control the number of copies made