Means For Preventing Accidental Displacement Of Piston Patents (Class 604/220)
  • Patent number: 8105292
    Abstract: The present disclosure describes a needle guard device or system that can be used with drugs requiring reconstitution. The needle guard is preferably a passive needle guard that can be used during reconstitution without activating the safety mechanism. Following administration of the medication, the needle guard shields a user from inadvertent needle sticks by extending a protective shield over the needle.
    Type: Grant
    Filed: February 10, 2009
    Date of Patent: January 31, 2012
    Assignee: Safety Syringes, Inc.
    Inventors: James M. Verespej, Philip Dowds
  • Publication number: 20120022467
    Abstract: A syringe designed with a passive safety locking means to effectively and reliably disallow unintentional displacement of the plunger toward the distal end if the syringe. The safety locking means is designed to affect reliable automatic release on at least two (2) points of engagement of the syringe for its intended use namely the controlled dispensement of generally viscous substances therein.
    Type: Application
    Filed: July 26, 2010
    Publication date: January 26, 2012
    Inventors: Cynthia Ann Shovary, Reggie Dwayne Huff
  • Patent number: 8092425
    Abstract: A syringe cylinder comprising an interior space, having a stopper that can be displaced in the interior space and delimits an active ingredient space, is proposed. The syringe cylinder is characterized by an indicator device biuniquely indicating a longitudinal movement of the stopper occurring in one direction.
    Type: Grant
    Filed: April 19, 2007
    Date of Patent: January 10, 2012
    Assignee: Arzneimittel GmbH Apotheker Vetter & Co. Ravensburg
    Inventors: Benjamin Böbst, Dirk Peters, Frank Boettger
  • Patent number: 8092424
    Abstract: A safety syringe adapted consists of an outer casing that supports a conventional hypodermic needle and an inner casing which supports a blunt cannula that is disposed inside the inner lumen of the hypodermic needle. The inner casing is keyed to the outer casing by one or more pins that engage helical tracks formed along the inner surface of the outer casing. Rotation of the inner casing relative to the outer casing advances the inner casing so that the blunt cannula is moved from a retracted position within the needle to an extended position in which the blunt end of the cannula extends beyond the tip of the needle.
    Type: Grant
    Filed: September 21, 2009
    Date of Patent: January 10, 2012
    Inventors: Jeffrey T. Mueller, Karl A. Poterack
  • Patent number: 8075535
    Abstract: A prefilled ready-to-use syringe, including a tubular body having, at its distal end, a tip to take a needle and, at its proximal end, a flange, a piston able to slide inside the tubular body and defining, with the tubular body, an internal working volume at least partially filled with a liquid, a rod for actuating the piston extending beyond the proximal end of the tubular body, characterized in that a rigid cover is attached and fixed in a definitive way to the flange and has a central opening for the free translational passage of the actuating rod, and the said cover forms a stop for the actuating rod in the proximal direction, and a plug is arranged to translate freely in the tubular body between the piston and the proximal end of the body, the plug being resistant to puncturing with a needle.
    Type: Grant
    Filed: May 25, 2004
    Date of Patent: December 13, 2011
    Assignee: Becton Dickinson France S.A.
    Inventors: Franck Carrel, Frederic Perot, Laurent Barrelle
  • Patent number: 8075547
    Abstract: A two-chambered, sequentially injectable syringe is disclosed. The syringe has two concentric barrels, substantially cylindrical in shape. The outer barrel has an open end adapted for receiving an inner barrel/first piston. The inner barrel/first piston contains a flushing liquid. The syringe has a second piston slidably movable in the inner barrel and a latching mechanism that can alternate between a locked configuration and an unlocked configuration. In the locked configuration, the latching mechanism prevents the second piston from substantially all longitudinal movement relative to the inner barrel. In the unlocked configuration, the latching mechanism permits longitudinal motion of the second piston within the inner barrel.
    Type: Grant
    Filed: July 22, 2009
    Date of Patent: December 13, 2011
    Assignee: Preventiv, Inc.
    Inventor: Martin Nicholas Lee
  • Patent number: 8075533
    Abstract: A two-chambered, sequentially injectable syringe is disclosed. The syringe has two concentric barrels, substantially cylindrical in shape. The outer barrel has an open end adapted for receiving an inner barrel/first piston. The inner barrel/first piston contains a flushing liquid. The syringe has a second piston slidably movable in the inner barrel and a latching mechanism that can alternate between a locked configuration and an unlocked configuration. In the locked configuration, the latching mechanism prevents the second piston from substantially all longitudinal movement relative to the inner barrel. In the unlocked configuration, the latching mechanism permits longitudinal motion of the second piston within the inner barrel.
    Type: Grant
    Filed: May 2, 2005
    Date of Patent: December 13, 2011
    Assignee: Preventiv, Inc.
    Inventor: Martin Nicholas Lee
  • Patent number: 8052654
    Abstract: A syringe (10) has a plunger (20), a barrel (11) and a collar (40, 50) with two pawls (42A, 42B). The plunger has two opposed ratchets (23A, 23B) that align with the one each of the pawls and thereby or impede, withdrawal of the plunger during or following depression of the plunger. The barrel has a collar with an inner (50) and an outer member (40) that are incapable of rotation relative with respect to each other. The outer member has the two pawls (42A, 42B) and two fingers that slidably engage opposed guide slots (28) on the plunger to thereby prevent or minimize rotation of the plunger relative to the collar. The inner member of the collar is operable to prevent engagement of the plunger ratchet by the two pawls until the plunger is depressed.
    Type: Grant
    Filed: January 28, 2005
    Date of Patent: November 8, 2011
    Assignee: Unitract Syringe Pty Ltd.
    Inventors: Joseph Hermes Kaal, Craig Stephen Thorley, Damien Judd
  • Patent number: 8048037
    Abstract: An injection device including a drive unit, a delivery unit, a dosing unit, a trigger for triggering an injection, a first coupling mechanism between the drive unit and the delivery unit, and a second coupling mechanism between the dosing unit and the drive unit, wherein the drive unit is tensioned by a rotation of the dosing unit and when the drive unit is tensioned the first coupling mechanism is disengaged and the second coupling mechanism is engaged, and wherein when an injection is triggered first the first coupling mechanism is engaged and then the second coupling mechanism is disengaged. In some embodiments, the device may include a third coupling mechanism which only releases the delivery unit after the engagement and disengagement which follow a triggering.
    Type: Grant
    Filed: March 13, 2009
    Date of Patent: November 1, 2011
    Assignee: TecPharma Licensing AG
    Inventors: Philippe Kohlbrenner, Peter Stettler, Patrick Hostettler, Juergen Wittmann, Martin Wittwer
  • Publication number: 20110257605
    Abstract: A centering syringe plunger guide (140) includes a guide body (141) including a proximal end (142) and a distal end (149), a coupling bore (143) extending partially into the guide body (141) from the proximal end (142), a precision guide bore (144) extending partially into the guide body (141) from the coupling bore (143), with the precision guide bore (144) adapted to fit over a barrel precision diameter of a syringe barrel and hold the centering syringe plunger guide (140) in a predetermined substantially coaxial alignment with the syringe barrel, and a guide plunger bore (145) extending completely from the precision guide bore (144) to the distal end (149) of the guide body (141). The guide plunger bore (145) is adapted to receive a syringe plunger and is configured to substantially center the syringe plunger in a plunger bore of the syringe barrel.
    Type: Application
    Filed: March 28, 2011
    Publication date: October 20, 2011
    Applicant: Kloehn, Inc.
    Inventor: Brian SWEENEY
  • Patent number: 8021333
    Abstract: A spring retainer (60) for a syringe (10) that has a barrel (40), a plunger (20), a spring (90) and a retractable needle (50) that can couple with the plunger for spring-driven retraction of the coupled needle and plunger. The spring retainer has first (70) and second (80) body members that cooperate to releasably maintain the spring in a compressed state until the plunger is coupled to the retractable needle after depression of the plunger to deliver the fluid contents of the syringe. Depression of the plunger triggers rotational disengagement of the first and second body members to allow decompression of the spring which forces retraction of the needle into the barrel. Rotational disengagement of the first and second body members also assists rotation of the plunger into a final, inoperable position.
    Type: Grant
    Filed: March 19, 2004
    Date of Patent: September 20, 2011
    Assignee: Unitract Syringe Pty Ltd.
    Inventors: Joseph Hermes Kaal, Craig Stephen Thorley
  • Patent number: 8007475
    Abstract: A flush syringe assembly comprises a barrel including a cylindrical side wall having an inside surface defining a chamber for retaining fluid, an open proximal end and a distal end including an elongate tip extending distally therefrom having a passageway in fluid communication with the chamber. A plunger including an elongate body portion has a stopper at its distal end. The stopper is slidably positioned in fluid-tight engagement with the inside surface of the barrel for driving fluid out of the chamber. The distal end of the stopper is configured to collapse while fluid is being driven though the passageway through motion of a plunger and to continue to drive fluid through the passageway after motion of the plunger has stopped.
    Type: Grant
    Filed: January 7, 2005
    Date of Patent: August 30, 2011
    Assignee: Becton, Dickinson and Company
    Inventor: Anthony J. Kosinski
  • Patent number: 8002754
    Abstract: A plunger rod useful for sliding a piston inserted in a syringe barrel has a threaded portion formed at an end of the plunger rod to attach the piston on the plunger rod and a flange formed at an opposite end of the plunger rod. The threaded portion and the flange are integrally connected together by a cylindrical member having an outer diameter such that the cylindrical member can be inserted with contact slidability in the syringe barrel, for example, an outer diameter equal to or slightly smaller than an inner diameter of the syringe barrel.
    Type: Grant
    Filed: November 5, 2008
    Date of Patent: August 23, 2011
    Assignee: Daikyo Seiko, Ltd.
    Inventors: Hideaki Kawamura, Hiroshi Togashi
  • Patent number: 7967010
    Abstract: A spray or injection device that includes a casing or a pusher that includes at least one tab radially moveable between a first radial position, in which the tab does not impede the movement of the pusher with respect to the casing, and a second radial position in which the tab opposes movement of the pusher. The pusher or the casing, respectively, includes at least one ramp-shaped projection configured to bring the tab into the second radial position and then allow it to return to the first radial position. The pusher or the casing further includes at least one stop between the pusher and casing to delineate the end of a first stroke corresponding to a first dose of medicament, and the beginning of a second stroke corresponding to a second dose of medicament.
    Type: Grant
    Filed: January 20, 2010
    Date of Patent: June 28, 2011
    Assignee: Becton, Dickinson and Company
    Inventors: Lionel Vedrine, Frederic Perot, Laurent Barrelle
  • Patent number: 7951120
    Abstract: A syringe has a syringe barrel into which a plunger stopper is inserted during a manufacturing process. A plunger rod is connected to the plunger stopper, and a backstop for preventing inadvertent removal of the plunger stopper from the syringe barrel is arranged at the proximal end of the syringe barrel. The backstop and the plunger rod are configured to form a combined assembly component which is adapted to be mounted to the syringe barrel in a combined manufacturing step. After mounting the combined assembly component to the syringe barrel, the backstop and the plunger rod are separated to allow conventional use of the syringe.
    Type: Grant
    Filed: May 17, 2004
    Date of Patent: May 31, 2011
    Assignee: Schott AG
    Inventors: Peter Wolbring, Ralph Mosimann, Hanspeter Diem
  • Patent number: 7922699
    Abstract: An administration instrument for medical use performs injection of a drug solution with stability and with great reliability. The administration instrument includes a needle that does not wobble, thereby alleviating physical and mental pain of the administration patient. The structure includes an injection button that is pressed at an angle that is not parallel to the needle with respect to a direction in which the needle is inserted into the skin. Thus, it is possible to prevent the force of pressing the injection button from being transmitted in a direction of insertion of the needle so that the needle is inserted deeper into the skin than the initial insertion of the needle, thereby achieving administration under a stable state.
    Type: Grant
    Filed: December 13, 2002
    Date of Patent: April 12, 2011
    Assignee: Panasonic Corporation
    Inventors: Tokumi Baba, Tokumi Ishikawa, Kouichi Matsuda
  • Patent number: 7901385
    Abstract: A casing (50) for an injection device (10) of the type having a safety device which prevents operation of the device (10), incorporating an actuator means (56) by which the safety means of the device (10) can be actuated to allow operation of the device (10). Also a casing (50) for a medicament container having an opening closed prior to use by a break-off tip (135), having relatively moveable first and second casing parts (51, 52), which on relative movement apply a breaking force to the break-off tip (135). A preferred embodiment includes both such features.
    Type: Grant
    Filed: March 18, 2003
    Date of Patent: March 8, 2011
    Assignee: Zogenix, Inc.
    Inventors: Gregor John McLennan Anderson, John Mitchell
  • Patent number: 7887518
    Abstract: A syringe assembly having passive disabling structure includes a barrel and a plunger rod assembly. The plunger rod assembly includes a plunger rod and a stopper connected by an indexing locking element. The number of strokes of the syringe plunger before the stopper is locked into the barrel rendering the syringe assembly unusable is determined by the number of detents on the plunger rod and stopper which engage the locking mechanism. Upon completion of the final delivery stroke, any attempt to withdraw the plunger rod from the barrel will cause the locking element to engage the barrel and trap the stopper in the barrel preventing further use of the syringe.
    Type: Grant
    Filed: June 12, 2008
    Date of Patent: February 15, 2011
    Assignee: Becton, Dickinson and Company
    Inventor: Richard J. Caizza
  • Publication number: 20100312197
    Abstract: To provide a syringe with a needle storage mechanism in which the needle storage mechanism is not activated before use. A safety syringe including an injection barrel 1 having a connecting portion 11 at the distal end and an opening at the proximal end thereof, a needle assembly B having an injection needle 5 and a needle base 6 fixed to the proximal end of the injection needle 5 and being connected to the connecting portion 11, a gasket 2 provided liquid-tightly and slidably in the injection barrel, a plunger 3 being connected to the proximal end of the gasket 2 and joining means 21 provided at the distal portion of the gasket 2 or the plunger 3, and joined means 61 provided at the proximal portion of the needle base 6, wherein a joint preventing means 90 which prevents the joining means 21 and the joined means 61 from being joined unintentionally before use, and allows joining to each other when in use is provided.
    Type: Application
    Filed: September 12, 2006
    Publication date: December 9, 2010
    Inventors: Minoru Sano, Yoshihisa Hama
  • Patent number: 7842017
    Abstract: Syringes and methods of using are described which protect the syringe barrel cavity from contaminants. A syringe is formed with an end cap contaminant shield having an extension wall that is mated with the rearward end opening of the syringe barrel cavity. Alternatively, the end cap contaminant shield can be provided with a flat design without the extending wall and is bonded or molded to the rearward end terminus of the syringe barrel. The end cap contaminant shield designs are provided with an opening defining the shape of the cross-section of the plunger shaft.
    Type: Grant
    Filed: December 18, 2006
    Date of Patent: November 30, 2010
    Inventor: Robin Scott Gray
  • Patent number: 7837943
    Abstract: A device for pre-treating and injecting a liquid specimen includes a first syringe including an open top first tube including a first hole in the bottom and protrusions, a second syringe including an open top second tube including a second hole in the bottom and an inner diameter greater than an outer diameter of the first tube, a second piston movable along an inner wall of the second tube and including a third hole and a communication channel providing fluid communication between the first hole and the third hole, and a joint portion attachable to and detachable from a top of the second tube and including an opening corresponding to a transverse cross-section of the first tube and grooves corresponding to the shape of the protrusions such that the first tube passes through the joint portion when the protrusions are matched with the grooves.
    Type: Grant
    Filed: July 11, 2006
    Date of Patent: November 23, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sung-young Jeong, Hun-joo Lee
  • Patent number: 7803132
    Abstract: A syringe includes a hollow barrel, a hollow plunger movable within the barrel and a needle assembly secured within and at a distal end of the barrel. The needle assembly includes a needle holder, a resilient member that biases the needle holder toward the proximal end opening of the barrel, and a retaining member releasably secured to the needle holder via a reduced material section. The retaining member maintains the needle holder at the distal end of the barrel against the bias of the resilient member. When the plunger is fully depressed within the barrel, the plunger engages the needle holder such that the retaining member is forced to break away and separate from the needle holder along the reduced material section to facilitate retraction of the needle holder and a needle secured to the needle holder into the retraction cavity disposed within the plunger.
    Type: Grant
    Filed: October 14, 2005
    Date of Patent: September 28, 2010
    Inventors: Gregory A. Janek, Vincent Runfola, Li Xian Yu
  • Patent number: 7803172
    Abstract: Apparatus for sealing a puncture communicating with a blood vessel includes a porous carrier formed from lyophilized hydrogel or other material. The plug may include at least first and second hydrogel precursors and a pH adjusting agent carried by the porous carrier in an unreactive state prior to exposure to an aqueous physiological environment. Once exposed to bodily fluids, the carrier expands as the lyophilized material hydrates to enhance and facilitate rapid hemostasis of the puncture. When the plug is placed into the puncture, the natural wetting of the plug by bodily fluids (e.g., blood) causes the first and second precursors to react and cross-link into an adhesive or “sticky” hydrogel that aids in retaining the plug in place within the puncture.
    Type: Grant
    Filed: January 25, 2007
    Date of Patent: September 28, 2010
    Assignee: AccessClosure, Inc.
    Inventors: Farhad Khosravi, Suresh S. Pai, Celso J. Bagaoisan
  • Publication number: 20100212663
    Abstract: A spray or injection device that includes a casing or a pusher that includes at least one tab radially moveable between a first radial position, in which the tab does not impede the movement of the pusher with respect to the casing, and a second radial position in which the tab opposes movement of the pusher. The pusher or the casing, respectively, includes at least one ramp-shaped projection configured to bring the tab into the second radial position and then allow it to return to the first radial position. The pusher or the casing further includes at least one stop between the pusher and casing to delineate the end of a first stroke corresponding to a first dose of medicament, and the beginning of a second stroke corresponding to a second dose of medicament.
    Type: Application
    Filed: January 20, 2010
    Publication date: August 26, 2010
    Inventors: Lionel Vedrine, Frederic Perot, Laurent Barrelle
  • Patent number: 7740610
    Abstract: An operable single-use syringe includes a barrel having an inside surface defining a chamber for retaining fluid and an open proximal end. A plunger rod having an elongate body portion and a stopper at its distal end slidably positioned in fluid-tight engagement in the barrel. A locking element is positioned in the barrel between the plunger rod and the inside surface of the barrel. The locking element has a base and two leg members projecting therefrom that are positioned in longitudinal grooves in the plunger rod. The locking element only moves distally in the barrel and prevents re-use of the syringe after its contents have been discharged.
    Type: Grant
    Filed: November 5, 2007
    Date of Patent: June 22, 2010
    Assignee: Becton, Dickinson and Company
    Inventors: Jon Yaohan Moh, Brian J. Pelkey, Julia E. Griggs
  • Patent number: 7740619
    Abstract: An ophthalmic injection device includes a dispensing chamber housing with an inner surface that partially defines a dispensing chamber for holding a substance, a plunger fluidly sealed to the interior surface of the dispensing chamber housing, and a needle fluidly coupled to the dispensing chamber. A temperature control device partially surrounds the dispensing chamber housing and alters a temperature of the substance. A piston is coupled to the plunger at one end and to a spring at the other end. The spring provides a force to drive the piston and the plunger. An actuator is coupled to the lockout bar with which a button is configured to interface. The actuator moves the lockout bar when the substance reaches a temperature, thereby allowing the button to be activated so that the spring provides the force to drive the plunger. An incorporated stop whose measurements may vary allow the expelled dosage to vary accordingly.
    Type: Grant
    Filed: February 5, 2008
    Date of Patent: June 22, 2010
    Assignee: Alcon Research, Ltd.
    Inventors: Raffi Pinedjian, Robert J. Sanchez, Jr.
  • Publication number: 20100130935
    Abstract: An injection system includes a syringe, which preferably includes larger and smaller inner diameters, and a plunger. A wiper sidewall of the plunger defines a cavity, into which a plunger shaft of the system is inserted, for moving the plunger, within the syringe, for fluid injection. The plunger includes a feature for engaging the shaft, and the sidewall preferably includes a expandable-contractible portion, in which the feature is formed. When the plunger is initially mounted within the larger inner diameter of the syringe, the portion of the sidewall is expanded and the feature of the plunger does not operably engage the inserted shaft. When the shaft moves the plunger into the smaller inner diameter of the syringe, the portion of the sidewall contracts and the feature operably engages the shaft. An optional deformable end wall of the plunger may be spaced apart from a distal terminal end of the inserted shaft.
    Type: Application
    Filed: November 26, 2008
    Publication date: May 27, 2010
    Applicant: ACIST MEDICAL SYSTEMS, INC.
    Inventors: Martin G. Hieb, David J. Hajicek, Sidney D. Nystrom
  • Patent number: 7681570
    Abstract: A spray or injection device that includes a casing or a pusher that includes at least one tab configured to move radially between a first radial position in which the tab does not impede the movement of the pusher with respect to the casing, and a second radial position in which the tab opposes movement of the pusher. The tab includes an opening. The pusher or the casing, respectively, includes at least one ramp-shaped projection configured to bring the tab into the second radial position then to penetrate the opening thereby allowing the tab to return to the first radial position. The pusher or the casing, respectively, further includes at least one stop region against which the tab abuts when the tab is brought into the second radial position by the projection. The stop region occurring just before the projection being opposite the opening.
    Type: Grant
    Filed: September 26, 2003
    Date of Patent: March 23, 2010
    Assignee: Becton Dickinson France S.A.S.
    Inventors: Lionel Vedrine, Frederic Perot, Laurent Barrelle
  • Patent number: 7678080
    Abstract: An intravenous catheter introducing device includes a needle hub slidably inserted into a barrel and holding a needle cannula, a biasing member disposed to bias the needle hub to a rear position so as to retract the needle cannula in the barrel, and an easy release unit including an engaging wall segment which is attached to an outer surface of the barrel, two flexible squeezed wall segments which extend from the engaging wall segment and which is squeezable so as to move two latch members to steer clear of a retained end of the needle hub through an access hole in the barrel, thereby permitting the biasing member to bias the needle hub towards the rear position.
    Type: Grant
    Filed: October 15, 2007
    Date of Patent: March 16, 2010
    Inventors: Ming-Jeng Shue, Deborah Huang, Phillip Shue
  • Publication number: 20100036326
    Abstract: A disposable injector with a housing (10) in which are arranged at least one mechanical spring energy store (50), at least one cylinder-piston unit that can be filled at least temporarily with an active substance, at least one piston actuation plunger (60) and at least one triggering unit (80). The spring energy store comprises at least one pre-loaded spring element. The spring-loaded piston actuation plunger has at least one traction rod (61) which can be moved transversely, at least in certain regions, and by means of a supporting portion supports the tensioned spring energy store on at least one resting surface (37) of the housing. An actuatable triggering slide device (82) unlocks the disposable injector and releases the supporting portion to allow it to move away from the resting surface.
    Type: Application
    Filed: October 10, 2009
    Publication date: February 11, 2010
    Inventor: Rudolf Matusch
  • Publication number: 20100010452
    Abstract: The present technology relates to an apparatus for intraocular injection comprising a plate adapted for being brought into contact with an eye and a guide operable to guide a needle into the interior of an eye, characterized in that it comprises means for displacing a superficial layer (1) of the eye over an underlying layer (2) of the eye as the plate is brought into contact with the eye before the needle is guided into the interior of the eye.
    Type: Application
    Filed: January 9, 2008
    Publication date: January 14, 2010
    Applicants: FOVEA PHARMACEUTICALS, FOUDATION OPHTALMOLOGIQUE ADOLPHE DE ROTHSCHILD
    Inventors: Michel Paques, Pierre Roy
  • Patent number: 7601140
    Abstract: A relatively stiff syringe pressure applicator having a pair of ears, the ears are overmolded with a relatively soft elastomer. A port extends through the syringe pressure applicator and is connected to friction fittings on either side of the pressure applicator. The external fitting is suitable for connecting to a source of pressurized air. The other fitting is sized and shaped to receive an elastomeric seal that may be inserted into the open end of a syringe to seal the syringe air tight.
    Type: Grant
    Filed: June 25, 2004
    Date of Patent: October 13, 2009
    Assignee: Alcon, Inc.
    Inventors: Richard A. Rossback, Mark C. Tsai
  • Publication number: 20090247957
    Abstract: An injection device including a volume for accommodating a product for administration, a piston for acting upon the product within the volume, and a stopper which can be arranged between an end of the piston facing the product and the product within the volume, wherein the piston includes a piston head configured to be sealed in a gas-tight manner, the piston head being separate from the stopper such that a negative pressure or vacuum region can be developed between the piston head and the stopper.
    Type: Application
    Filed: February 25, 2009
    Publication date: October 1, 2009
    Inventor: Ivan Heutschi
  • Publication number: 20090198195
    Abstract: An administering apparatus including a casing, a reservoir, a piston accommodated in the reservoir such that it can be shifted in an advancing direction, a piston rod which acts on the piston in the advancing direction and forms a first locking mechanism, a second locking mechanism which cannot be moved counter to the advancing direction, a lock element row formed by successively arranged first locking elements, extending in the advancing direction, and formed by one of the locking mechanisms, and a second lock element formed by the other locking mechanism and engaged with the lock element row, wherein it engages with a lock element gap of the lock element row, wherein the second lock element is moved out of engagement by a movement, against an elasticity force, of the piston rod in the advancing direction, but, when engaged, counteracts a movement of the piston rod counter to the advancing direction with a resistance force greater than the elasticity force to prevent the piston rod from moving counter to the
    Type: Application
    Filed: December 18, 2008
    Publication date: August 6, 2009
    Inventors: Thomas Gurtner, Fritz Kirchhofer
  • Publication number: 20090036868
    Abstract: An ophthalmic injection device includes a dispensing chamber housing with an inner surface that partially defines a dispensing chamber for holding a substance, a plunger fluidly sealed to the interior surface of the dispensing chamber housing, and a needle fluidly coupled to the dispensing chamber. A temperature control device partially surrounds the dispensing chamber housing and alters a temperature of the substance. A piston is coupled to the plunger at one end and to a spring at the other end. The spring provides a force to drive the piston and the plunger. An actuator is coupled to the lockout bar with which a button is configured to interface. The actuator moves the lockout bar when the substance reaches a temperature, thereby allowing the button to be activated so that the spring provides the force to drive the plunger. An incorporated stop whose measurements may vary allow the expelled dosage to vary accordingly.
    Type: Application
    Filed: February 5, 2008
    Publication date: February 5, 2009
    Inventors: Raffi Pinedjian, Robert J. Sanchez, JR.
  • Publication number: 20090030377
    Abstract: A syringe assembly having passive disabling structure includes a barrel and a plunger rod assembly. The plunger rod assembly includes a plunger rod and a stopper connected by an indexing locking element. The number of strokes of the syringe plunger before the stopper is locked into the barrel rendering the syringe assembly unusable is determined by the number of detents on the plunger rod and stopper which engage the locking mechanism. Upon completion of the final delivery stroke, any attempt to withdraw the plunger rod from the barrel will cause the locking element to engage the barrel and trap the stopper in the barrel preventing further use of the syringe.
    Type: Application
    Filed: June 12, 2008
    Publication date: January 29, 2009
    Inventor: Richard J. Caizza
  • Publication number: 20080300550
    Abstract: A stopper adapted for attachment with a plunger rod for use within a syringe barrel is disclosed. The stopper includes a main body defining an open rearward end and a closed front end. The open rearward end is adapted to receive a front forward end attachment portion of the plunger rod. The stopper also includes a core member integrally formed with said main body adjacent the closed front end. The core member includes a nose portion having a profile adapted to create a positive seal with an outlet opening of such syringe barrel.
    Type: Application
    Filed: June 4, 2008
    Publication date: December 4, 2008
    Applicant: BECTON, DICKINSON AND COMPANY
    Inventors: Eric Schiller, Michael V. Quinn, Johanna Torres, E. Guan, Anthony Economou, Gang Ju
  • Publication number: 20080300551
    Abstract: A plunger rod adapted for attachment with a stopper for use with a syringe barrel is disclosed. The plunger rod includes an elongated member having a front end and a back end, the plunger rod extending along a longitudinal axis. The plunger rod includes at least one deflecting arm associated with the front end of the elongated member. The deflecting arm is capable of deflecting radially inward during insertion of the plunger rod into a stopper, and deflecting outward into contact with an inner surface of the stopper after insertion to lock the plunger rod within the stopper.
    Type: Application
    Filed: June 4, 2008
    Publication date: December 4, 2008
    Applicant: Becton, Dickinson and Company
    Inventors: Eric Schiller, Michael V. Quinn, Johanna Torres, E Guan, Anthony Economou, Gang Ju
  • Publication number: 20080287884
    Abstract: The present invention relates to a syringe system that allows rapid conversion between a needle/syringe system and a needleless/syringe system and in doing so allows an operator to move seamlessly between both systems, while minimizing needle stick risk. In this way, an operator may rapidly access medication bottles requiring a needle puncture and access needleless tubing systems requiring a needleless interface.
    Type: Application
    Filed: April 16, 2008
    Publication date: November 20, 2008
    Inventors: Matthew P. Warden, Jeffrey P. Derderian, Suneer Chander, Ashley R. Winn
  • Publication number: 20080234635
    Abstract: A disposable syringe includes a barrel, a needle assembly, a plunger, a press-fitting unit, and a spacer. The plunger is movable in the barrel to a retraction initiating position, where a front open plunger end is coupled with the needle assembly for withdrawal of the needle assembly into the plunger. An endcap is disposed to cover a rear open plunger end of the plunger. The press-fitting unit is disposed between the plunger and an inner barrel surface of the barrel to permit press-fit engagement between the plunger and the barrel immediately after the plunger is moved to the retraction initiating position. The spacer includes front and rear abutment surfaces detachably engaged with the barrel and the endcap in a preuse position.
    Type: Application
    Filed: September 7, 2007
    Publication date: September 25, 2008
    Inventors: Ming-Jeng Shue, Phillip Shue, Deborah Huang
  • Publication number: 20080234636
    Abstract: A disposable syringe includes a barrel, a needle assembly, a plunger, and a spacer. A tubular catch extends rearwardly of the barrel to terminate at a peripheral edge. The needle assembly includes a needle cannula and a needle seat for securing the needle cannula. The plunger is movable in the barrel to a retraction initiating position, where a front open plunger end is coupled with the needle seat for withdrawal of the needle seat and the needle cannula into the plunger. An endcap is disposed to cover a rear open plunger end, and has a ring wall fittable in the catch. The spacer has front and rear abutment surfaces that detachably and respectively abut against the peripheral edge and a rim of the ring wall in a pre-use position to thereby prevent movement of the plunger to the retraction initiating position.
    Type: Application
    Filed: September 6, 2007
    Publication date: September 25, 2008
    Inventors: Ming-Jeng Shue, Phillip Shue, Deborah Huang
  • Publication number: 20080208144
    Abstract: The present invention relates to a method of assembling a syringe device such that rotational and translational tolerances are reduced or eliminated. The syringe device comprises a rotational retaining mechanism arranged to prevent backwards movement of a piston rod. The method comprises the step rotating the rotational retaining mechanism into a locking position prior to completing the assembly. Furthermore, the invention relates to a syringe device comprising a retaining mechanism having a first part and a second part, said parts being interconnected by a plurality of elements, wherein one of said elements comprises a first part and a second part separated by an interconnecting seam.
    Type: Application
    Filed: July 17, 2006
    Publication date: August 28, 2008
    Applicant: Novo Nordisk A/S
    Inventor: Claus Schmidt Moller
  • Publication number: 20080154213
    Abstract: A syringe having a syringe body, a plunger, means to prevent the rear of the plunger from being gripped to retract the plunger when the plunger is at least at the fully forward position where all or most of the liquid has been ejected, and a catch on the plunger which prevents retraction of the plunger when the plunger is in at least the fully forward position.
    Type: Application
    Filed: January 16, 2007
    Publication date: June 26, 2008
    Inventor: Bruce Leigh Kiehne
  • Publication number: 20080154212
    Abstract: An injection device includes a barrel, a plunger having a portion structured and arranged to move within the barrel, a needle support, and a locking arrangement. The locking arrangement may at least one of selectively lock a proximal end portion of the plunger to the needle support and automatically lock a proximal end portion of the plunger to an outer portion of the needle support. This Abstract is not intended to define the invention disclosed in the specification, nor intended to limit the scope of the invention in any way.
    Type: Application
    Filed: December 26, 2006
    Publication date: June 26, 2008
    Applicant: STAT MEDICAL DEVICES, INC.
    Inventor: Steven SCHRAGA
  • Publication number: 20080097307
    Abstract: A retractable syringe (11) is disclosed wherein the needle (14) is located initially in a first storage position enclosed within the syringe body (12). In a second in-use position, the needle extends from the body of the syringe. To move needle from first to second position, the plunger (13) connects the needle boss (15) with the syringe body ens (16). The plunger is then disengaged from the needle boss enable the plunger to be withdrawn and thereby take in fluid into the syringe. Upon completion of injection the plunger engages with the needle boss enabling the plunger to be withdrawn, the needle remaining attached. Engaging the plunger to the needle boss requires the same amount of force as to perform the injection. Lateral forces act to engage the needle boss and the end of the plunger, for example by utilising a cam mechanism in the form of a finger lock device (26).
    Type: Application
    Filed: June 7, 2005
    Publication date: April 24, 2008
    Applicant: GLOBAL MEDISAFE HOLDINGS PTY LIMITED
    Inventors: Graeme Francis Walton, Allan Walsh
  • Publication number: 20080097337
    Abstract: A syringe is provided which comprises a barrel (11) and a needle sheath (30) slidably located within the barrel, a plunger (20) with a plunger seal (23), a needle, a needle sheath (30) and a sheath seal (50), arranged so that depression of the plunger forces the needle sheath to move into a position where it covers or at least partly encloses the needle after delivery of fluid contents of the syringe. The needle sheath may be manually actuated or may be actuated by decompression of a spring. The syringe may further comprise a plunger disabling means operable to impede, prevent or otherwise hinder withdrawal of the plunger during or following depression of the plunger. The syringe may be a pre-filled syringe or a syringe which is filled by a user.
    Type: Application
    Filed: July 18, 2005
    Publication date: April 24, 2008
    Applicant: UNITRACT SYRINGE PTY LTD
    Inventors: Damien Judd, Joseph Hermes Kaal, Craig Stephen Thorley
  • Patent number: 7361162
    Abstract: The syringe is formed according to DIN ISO 11040 and has a syringe barrel (1) with a syringe head (1a) formed on one end and a grip plate (4) formed at the other open end. An elastomeric piston stopper (6) is insertable in this open end, which is movable back and forth and which has a cruciform-cross-sectioned piston rod (7) screwed into it. A stop element, which reduces the interior diameter of the syringe barrel, is provided at the open end of the syringe barrel to perform a back-stop function, i.e. to prevent unintended withdrawal of the piston stopper. For this purpose a plastic part (2) connected to the grip plate (4) is provided with snap catches (3), which snap onto the inner side of the syringe barrel (1). These snap-catches (3) prevent the piston rod (7) from being rotated out of the piston stopper and the piston stopper (6) from being withdrawn from the syringe barrel. At the same time the finger support is enlarged.
    Type: Grant
    Filed: November 10, 2003
    Date of Patent: April 22, 2008
    Assignee: Schott AG
    Inventors: Horst Koller, Markus Steigenberger, Karl Mosimann, Thomas Kadur
  • Publication number: 20080082055
    Abstract: A plunger rod assembly for use with a syringe barrel is provided and includes a plunger rod slidably disposable within the syringe barrel, wherein the plunger rod includes a hub extending distally from a distal end thereof and at least two tabs extending outwardly therefrom. The syringe further includes a plug configured for slidable disposition in the syringe barrel and configured for selective connection to the plunger rod via a bayonet-type engagement. The plug includes a base wall having at least two resilient fingers supported on a first side thereof, wherein each resilient finger is configured to snap-fit engage a respective tab of the plunger rod during connection of the plug to the plunger rod; and a plunger tip supported on a second side of the base wall, opposite the first side, and being configured to form a substantially fluid tight seal with an inner surface of the syringe barrel.
    Type: Application
    Filed: September 27, 2007
    Publication date: April 3, 2008
    Applicant: TYCO HEALTHCARE GROUP LP
    Inventors: Ronald Lloyd, Ellen Morefield, Eric Sampson
  • Patent number: 7337538
    Abstract: Apparatus and methods of their use are described for engaging a pumping cartridge with a pump drive. In certain embodiments, the cartridge, comprising a cylinder and a movable piston assembly, is initially assembled or subsequently positioned so that the distance between the attachment point on the piston assembly for coupling to a drive assembly, and a reference point on the cylinder, is greater than the maximal distance that will be encountered during normal oscillation of the piston during use. The cartridge, in certain embodiments may be pressed into a drive assembly having means for immobilizing the cartridge and means for coupling the piston assembly to the driveshaft. In certain embodiments, when the cartridge is fully inserted into the drive assembly, the piston is pressed into the cylinder sufficiently to establish a selected distance so that the piston shaft is in the proper position to engage with a coupling mechanism carried on the driveshaft.
    Type: Grant
    Filed: January 13, 2004
    Date of Patent: March 4, 2008
    Assignee: HydroCision, Inc.
    Inventors: Timothy E. Moutafis, Edward Bromander
  • Patent number: 6991618
    Abstract: A single use syringe assembly is provided as well as a locking element for such an assembly. The single use syringe assembly includes a barrel, a plunger rod assembly and a locking element positioned within the barrel. The locking element includes one or more barbs for engaging the inside surface of the barrel. The barbs prevent the locking element from moving proximally within the barrel, but allow its distal movement therein with the plunger rod assembly. A spring member may be provided for urging the barbs towards the inside surface of the barrel. The barbs are preferably positioned on the edge portions of opposing legs that form part of the locking element.
    Type: Grant
    Filed: July 19, 2002
    Date of Patent: January 31, 2006
    Assignee: Becton Dickinson and Company
    Inventors: Steven Choon Meng Lau, Chui Khim Chua, Yaohan Moh