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...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.

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Class 604/89 - Closure or barrier between compartments moved to permit mixing


Subclass of Class 604 - Surgery
Definition: Subject matter including a sealing element which is displaced
No. of patents: 227
Last issue date: 05/29/2012


1            
NumberTitleIssue Date
8187220Seal structures for wet/dry automatic injectors
An automatic medicament injector has a first compartment for a first medicament component and a second compartment for a second medicament component. The two compartments are separated by a seal structure that converts from a sealing condition to a mixing condition ...
05/29/2012
8167834Injection device
A pen injection device designed for use with dual or multi-chamber cartridges (14), is provided with an extended length plunger (24) having a non-drive portion (24′) on its forward end and the usual screw-threaded drive portion (24′) ...
05/01/2012
8167835Single chamber device for drawing in and dispensing components
A single chamber device for drawing in and dispensing components comprising a syringe housing, a piston that is actuatable by a plunger unit, and a mixing assembly whose rod is guided through the piston and operatively connected to the plunger unit. The plunger unit...
05/01/2012
8137307Syringe devices, components of syringe devices, and methods of forming components and syringe devices
A syringe device includes a syringe barrel and piston having a fluid passageway extending from a vial port. Another syringe device includes a syringe barrel, a piston sleeve and an insert. A channel extends along a side of the insert. A valve controls fluid communic...
03/20/2012
8092421Dual-chamber carpule
The invention relates to a dual-chamber carpule having (1) a first partial cylinder comprising a sealing cap, a bypass, and an intermediate stopper, (2), an optional sealing element, and (3) a second partial cylinder comprising an end stopper and, optionally, a stop...
01/10/2012
8092420Automatic reconstitution injector device
The present invention is directed to an automatic reconstitution drug delivery device. The inventive device effects simple and automatic reconstitution of a dry drug. To effect reconstitution, a user displaces a release button which causes first and second chambers ...
01/10/2012
8092422Dual-chamber carpule with attachment
The invention relates to a dual-chamber carpule comprising a cylinder (1) comprising a bypass (3), a central plug (6) and an end plug (10), and an attachment; the invention further relates to a method for producing and filling said dual-c...
01/10/2012
8066663Slide valves equipped in a syringe and thus equipped syringe
There are provided an intermediate slide valve as well as a plunger slide valve equipped in a syringe in direct contact with injection liquids and a syringe equipped with such slide valves, the injection liquids nor valves being not affected with each other. ...
11/29/2011
8057427Drug delivery system with a small amount of a therapeutic agent
A drug delivery system includes an automatic injector that can deliver a small, precise amount of a therapeutic agent. The automatic injector includes a chamber for containing a liquid component and a thin porous member that carries thereon and/or therein the small,...
11/15/2011
8021325Liquid drug medical device
The present invention relates to liquid drug medical devices for enabling the administration of liquid drugs, and also a needle shield removal device for safely removing needle shields. ...
09/20/2011
8002737Mixing/administration syringe devices, protective packaging and methods of protecting syringe handlers
A syringe device having a syringe barrel and a syringe piston having a container housing. At least a portion of the container housing is insertable within an internal chamber of the syringe barrel. A fluid passageway extends from the container housing through a pist...
08/23/2011
7967779Powder and liquid mixing syringe
A mixing syringe having a first sealed chamber containing a powder (powder housing) and a second sealed chamber containing a liquid (liquid housing). When the user needs to inject a patient, he or she holds the mixing syringe approximately upright and depresses a pl...
06/28/2011
7959600Container closure delivery system
A container closure delivery system that is suitable for lyophilized pharmaceutical injectable powder products is disclosed. The system comprises storage stable powder formulations and a container closure assembly design wherein the formulation can be filled and lyo...
06/14/2011
7815598Auto-pen for a two-chamber ampoule
An injection device for use with a two-chamber ampoule, wherein the device includes a front casing part with which the two-chamber ampoule can be associated, a rear casing part, a threaded drive accommodated by the rear casing part, a piston rod which, during a blen...
10/19/2010
7749190Seal structures for wet/dry automatic injectors
An automatic medicament injector having a compartment for a dry medicament component and a compartment for a wet medicament component. The two compartments are separated by a seal structure that converts from a sealing condition to a mixing condition when the device...
07/06/2010
7699804Fluid ejection system
A fluid ejection system (20) comprising a cartridge (24), an ejector (32, 300) and, optionally, a fill station (28) for filling the cartridge with a fluid, such as a vaccine. In some embodiments (52), the cartridge includes a trans...
04/20/2010
7621887Wet/dry automatic injector assembly
An automatic medicament injector having a compartment for a dry medicament component and a compartment for a wet medicament component. The two compartments are separated by a seal structure that has a plug that is moved from a sealing position into a mixing position...
11/24/2009
7608055Flow-path inserts for wet/dry automatic injectors
An automatic medicament injector having a compartment for a dry medicament component and a compartment for a wet medicament component. The two compartments are separated by a seal structure that converts from a sealing condition into a mixing condition when the devi...
10/27/2009
7556614Separation assembly for drug delivery device
A separation assembly for initially keeping a first component separate from a second component includes a generally cylindrical body slidably supported within a container between the first and second components. The body includes a seal structure having an inner sea...
07/07/2009
7407494Device for delivering medicament
A device for delivery of medicament includes a main housing, a container having at least two compartments, each containing a component of the medicament to be injected, and arranged to be connected to a patient delivery element, a longitudinally movable piston and a...
08/05/2008
7402150Injection device
Disclosed is an injection device for properly dissolving pharmaceutical agents contained in a two-compartment syringe having slidable front and rear walls, and then performing portionwise multiple injections. The injection device comprises a front casing designed to...
07/22/2008
7357792Positive push medical valve with internal seal
A medical valve having an open mode to permit fluid flow and a closed mode to prevent fluid flow has a body and a valving element within the interior of the body. The body also has a valving element within its interior, and a proximal port and a distal port. The val...
04/15/2008
7354190Two-stage mixing system, apparatus, and method
A two-stage mixing system, apparatus, and method produces a solution including a first substance and a second substance in a predetermined ratio by first mixing the first substance with a first liquid to produce a first solution and then mixing the first solution wi...
04/08/2008
7341575Medical injector and medicament loading system for use therewith
The present invention discloses a medical injector and medicament loading system for use therewith. The medicament loading system includes cap for a medicament cartridge. The cap has a post for causing movement of the cartridge stopper toward the seal when the cap e...
03/11/2008
7331942Flush syringe having anti-reflux stopper
An I.V. flush syringe assembly includes a barrel having an inside surface defining a chamber for retaining fluid, an open proximal end and a distal end including a distal wall with an elongate tip extending distally therefrom having a passageway therethrough in flui...
02/19/2008
7329235Powder and liquid mixing syringe
A mixing syringe having a first sealed chamber containing a powder (powder housing) and a second sealed chamber containing a liquid (liquid housing). When the user needs to inject a patient, he or she holds the mixing syringe approximately upright and depresses a pl...
02/12/2008
7320540Bone cement mixing and delivery device with releasable mixing blade
A bone cement mixing and delivery assembly is disclosed for mixing a powdered copolymer and a liquid monomer to form a bone cement and deliver the bone cement. The assembly includes a cartridge having a distal end and a proximal end and defining a mixing chamber bet...
01/22/2008
7314464Pen needle and safety system
A safety shield system having a needle assembly with a safety shield movable from a first position enclosing an end of a needle cannula, to a second position exposing the end of the needle cannula for injection, to a third position lockingly enclosing the end of a n...
01/01/2008
7311692Two-chamber-type pre-filled syringe
A dual-chamber type prefilled syringe comprises a cylindrical body within which a front plug member, a middle plug member and an end plug member are hermetically fitted to form a first chamber and a second chamber. The cylindrical body has an inner surface formed wi...
12/25/2007
7291133Device for the metered administration of a fluid drug
A device for the metered administration of a fluid drug. The device has a container having a piston for administering the fluid drug through an outlet of the container, a catheter connected to the outlet of the container, the catheter having a front end facing away ...
11/06/2007
7278985Medical pump
A medical pump, comprising a reservoir having a fluid enclosing portion and a tubular element, the inside of which is arrangeable in fluid communication with the fluid enclosing portion for allowing fluid to pass into the tubular element. The fluid enclosing portion...
10/09/2007
7279001Systems, methods, and compositions for achieving closure of vascular puncture sites
Systems and methods convey a closure material into a catheter, e.g., to seal a puncture site in a blood vessel. The closure material comprises a mixture of first and second components, which, upon mixing, undergo a reaction to form solid closure material composition...
10/09/2007
7216761Two-component mixing and dispensing device
A device for preparing and ejecting polymeric cement made from at least two pre-packaged components comprises a tubular vessel including a first axial end wall having a closed outlet, and a second axial end wall having an aperture. A first starting component of the ...
05/15/2007
7214210Cassette and method for drug preparation and delivery
A disposable cassette for mixing an intravenous drug in a vial to a patient includes a liquid inlet for connection to a liquid supply, a first vial spike, a second vial spike and a chamber. The chamber, the first and second vial spikes, and the liquid inlet are in f...
05/08/2007
7207970Displaceable-plug-containing filling/discharging port and medical container having the same
A filling/discharge port 10 which includes a port cap 20, a plug 40 which is slidably fitted in the inside of the port cap 20, and a plug cap 50 which is removably fitted to the tip of the plug 40 is provided for use in a li...
04/24/2007
7195606Syringe and a method for its utilization in analysis
The invention provides a syringe for preventing anemia resulting from withdrawal of blood from a patient for analysis, the syringe including a cylindrical tube having a nozzle at its lower end to which a needle is attachable; a piston disposed within the tube and ap...
03/27/2007
7195011Convertible fluid feed system with comformable reservoir and methods
A feed system for an aerosolizer utilizes an ampoule containing a liquid and includes a housing having an ampoule region into which the ampoule is held, and a liquid receiving region that is adapted to receive liquid dispensed from the ampoule. An interface is used ...
03/27/2007
7186241Syringe with needle penetrable and laser resealable stopper
A syringe and a reconstitution syringe are provided for the delivery of controlled doses of any of numerous different sterile substances, such as vaccines, medicaments, pharmaceutical preparations, cosmetics, and food products. A plunger of the syringe defines a res...
03/06/2007
7182277Spray device and method
A spray device including a barrel having a bypass and at least two spaced stoppers defining a first and second chambers and a spray nozzle. Movement of the first stopper drives the second stopper to the bypass and the fluid in the first chamber into the second chamb...
02/27/2007
7163102Disposable packaging for a ready-made food product
Disposable packaging, comprising a container (1) that defines a main compartment (2) and at least an additional compartment (3). The container (1) is bowl-shaped and is closed on the upper side by a film, or by a cover, in order to preven...
01/16/2007
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