Removable Plug Patents (Class 604/238)
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Patent number: 11779519Abstract: The invention provides, in some aspects, a container system for medical solutions such as peritoneal dialysis (PD) solutions. The invention particularly features a system which includes a first compartment that contains a first medical solution, e.g., a PD osmotic agent, and a second compartment that contains a second medical solution, e.g., a PD buffer agent. The compartments maintain their respective contents separately from one another for purposes of transport, storage and/or sterilization. However, the compartments are fluidly couplable, so that their respective contents can be combined with one another, e.g., following sterilization of the agents and prior to their introduction into the patient's abdomen. To that end, a container system can include a diffuser that is disposed in a fluid pathway between the first and second compartments, e.g., to facilitate homogeneous mixing of the first and second PD agents.Type: GrantFiled: October 9, 2020Date of Patent: October 10, 2023Assignee: FRESENIUS MEDICAL CARE HOLDINGS, INC.Inventors: Lynn E. Jensen, Venugopal R. Ghatikar, DeLoy Lindley, Melvin D. Jensen
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Patent number: 11533857Abstract: A system for administering a fluid to a tree. The fluid can be water, coloring agents, insecticides, fungicides, nutrients, plant growth regulators and herbicides. The system also includes a pressurizable container containing the fluid and a low pressure gas. The pressurizable container is attached to a manifold. Additionally, an infusion nozzle is attached to the manifold and configured to provide attachment of the system to a tree for an extended period of time ranging from weeks to months. The system also can, optionally, include an infusion control valve configured to regulate the flow of fluid from the container, through the manifold, through the infusion nozzle and into the tree. The infusion nozzle has threads that provide direct attachment to the tree.Type: GrantFiled: April 23, 2019Date of Patent: December 27, 2022Inventor: Jeffrey J Bird
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Patent number: 11517675Abstract: Described is a catheter patency maintenance device comprising of a flush syringe, an elongate plunger rod with a stopper slidably positioned within the barrel, a cap, disinfectant and a valve movable between an open position and a closed position. The valve may include a valve stem and/or openings in the valve to permit fluid flow. Methods of using the flush syringe assemblies are also described.Type: GrantFiled: September 25, 2018Date of Patent: December 6, 2022Assignee: Becton, Dickinson and CompanyInventor: Girum Yemane Tekeste
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Patent number: 11305064Abstract: A mixing vial having a hollow interior chamber with a tubular portion having distal and proximal open ends and a stopper positioned in sealing relationship in the tubular portion, the stopper having a hollow interior chamber with an open end and a dislodgeable plug positioned in and sealing the open end.Type: GrantFiled: January 2, 2018Date of Patent: April 19, 2022Assignee: Balanced Pharma IncorporatedInventor: John Scott Keadle
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Patent number: 10765463Abstract: One aspect relates to a device for producing a bone cement paste from a monomer liquid and a cement powder and for delivering the bone cement paste, the device having a cartridge with a cylindrical interior, the interior of the cartridge being closed at the front side apart from a delivery opening for discharging the bone cement paste from the interior. A delivery plunger is arranged in the interior of the cartridge and mounted so as to be pushable in the direction of the delivery opening. The cement powder is arranged in the interior of the cartridge between the delivery opening and the delivery plunger. A closure closes the delivery opening and is mounted so as to be movable relative to the delivery opening. A line element is arranged at the front side of the delivery opening and includes a closure receptacle for receiving at least part of the closure.Type: GrantFiled: June 13, 2018Date of Patent: September 8, 2020Assignee: Heraeus Medical GmbHInventors: Sebastian Vogt, Thomas Kluge
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Patent number: 9802002Abstract: The present invention provides test or training a cartridge for a drug delivery device as well as a method for resetting of such cartridge, wherein the cartridge comprises: a body of substantially cylindrical shape, a piston slidably disposed in the body in an axial direction, a closure means disposed at an axial end portion of the body, wherein the body, the piston and the closure means confine an interior volume coupled to the exterior via at least one fluid escape channel.Type: GrantFiled: May 31, 2011Date of Patent: October 31, 2017Assignee: Sanofi-Aventis Deutschland GmbHInventor: Christopher James Smith
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Patent number: 9351806Abstract: A dispensing device for a dental substance which has a container for receiving the dental substance, a piston movable in the container, a catch for engagement by an applicator, and further a resilient resilient adapter. The device may be used in different types of applicators and is relatively inexpensive.Type: GrantFiled: May 21, 2010Date of Patent: May 31, 2016Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Helmut Pauser, Marc Peuker, Michael Knee, Werner Fichtl, Andreas Maurer
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Publication number: 20150148775Abstract: A drug delivery device is provided for delivering a drug to a target tissue site. The drug delivery device comprises a body comprising a proximal end and a distal end and a chamber disposed therebetween. An upper portion is disposed about the proximal end of the body. A retaining member is disposed within a wall of the body and engageable with the chamber and a plunger is configured for disposal within the upper portion and the chamber. The upper portion is movable about the proximal end of the body to open the chamber such that the plunger is disposed within a passageway defined within the chamber, and movement of the plunger in a distal direction pushes the retaining member such that the drug moves out of the body. Methods are also disclosed.Type: ApplicationFiled: October 17, 2014Publication date: May 28, 2015Inventors: Danielle L. Clay, Jeffrey C. Marx
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Patent number: 8900179Abstract: A thrombectomy system may include an elongate shaft that defines a high pressure lumen and a low pressure lumen. The high pressure lumen may terminate near an end of the low pressure lumen. An expandable capture basket may be disposed near the end of the low pressure lumen. A thrombectomy apparatus may include an elongate shaft, an evacuation lumen extending within the elongate shaft and a high pressure lumen extending within the elongate shaft. A capture apparatus may be disposed within a wire lumen that extends within the elongate shaft such that the capture apparatus extends distally from the wire lumen.Type: GrantFiled: February 29, 2008Date of Patent: December 2, 2014Assignee: Boston Scientific Scimed, Inc.Inventors: Mark L. Jenson, William J. Drasler, Joseph M. Thielen
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Patent number: 8852155Abstract: A medicine reservoir (10) is provided for use with a drug delivery device (50). The medicine reservoir (10) is arranged for comprising a drug (13) and comprises a dispensing hole (15) for dispensing the drug (13) into an environment of the drug delivery device (50). The medicine reservoir (10) further comprises a deformable plug (14) which plug (14) is removable by pressure caused by a dispensing action of the drug delivery device (50).Type: GrantFiled: August 9, 2010Date of Patent: October 7, 2014Assignee: Medimetrics Personalized Drug DeliveryInventors: Hans Zou, Jeff Shimizu, Lucian Remus Albu
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Publication number: 20140243750Abstract: System comprising a sensor assembly (3, 4, 5, 6) adapted to measure a magnetic field, and a moveable element (1) adapted to be moved relative to the sensor assembly between two positions by a combined axial and rotational movement, the rotational movement having a pre-determined relationship to the axial movement. A magnet (3) is mounted to the moveable element and configured to generate a spatial magnetic field which relative to the sensor assembly varies corresponding to both the axial and rotational movement of the magnet and thus the moveable element. A processor is configured to determine on the basis of measured values for the magnetic field an axial position of the moveable element.Type: ApplicationFiled: October 5, 2012Publication date: August 28, 2014Applicant: NOVO NORDISK A/SInventors: Andre Larsen, Henrik Riehm Soerensen, Laurits Hoejgaard Olesen, Nikolaj Frogner Krusell, Jens Christian Andersen
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Patent number: 7641620Abstract: A sampling apparatus for taking a sample from the body of a patient is easily rotatable while the sample is being taken. This allows the physician to aspirate or draw the sample, rotating the sampling apparatus while holding stationary a syringe or other container for receiving the sample.Type: GrantFiled: December 10, 2004Date of Patent: January 5, 2010Assignee: Vance Products IncorporatedInventor: Troy W. Wingler
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Patent number: 7488308Abstract: An injector with a substance container defining a substance chamber configured for containing a substance to be injected, and an injection conduit configured for injecting the substance into a patient. A driver is associated with the substance chamber for driving the substance through the injection conduit. The injector also has a channel member defining a channel that has an open configuration in which the channel fluidly communicates the substance container to the injection conduit for the injection of the substance. The channel also has a closed configuration for blocking flow of any substance in the substance container therethrough to the injection conduit for inhibiting or preventing contact with the injection conduit prior to injection.Type: GrantFiled: August 13, 2004Date of Patent: February 10, 2009Assignee: Antares Pharma, Inc.Inventor: Paul R. Lesch, Jr.
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Patent number: 6497684Abstract: A syringe with a barrel for holding a fluid medium includes a sealing cap that is put on the outlet end of the barrel. The barrel in the section that can be inserted into the cap has a first locking element on the outside. The sealing cap in the corresponding section has interactive second locking elements on the inside. The sealing cap can thus be put onto barrel with little force and thus less cracking occurs. To facilitate locking, the cap has a large number of second locking elements that are arranged peripherally. In each case, an expansion section is provided in the wall of cap between each pair of adjacent locking elements.Type: GrantFiled: April 9, 2001Date of Patent: December 24, 2002Assignee: Schering AktiengesellschaftInventor: Norbert Witowski
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Patent number: 6394985Abstract: A backflow proof structure for a syringe comprising a central cylinder portion and two blocks positioned in a protruding end of the syringe, on the bottom of the cylinder portion is a flared portion and on the top thereof is a tip, the outer space of the tip is filled with a piece of crystallized syrup to separate a crown cap covering the top of the tip from the cylinder portion; when the cylinder portion is placed in the protruding end, and a silicone cube is placed there-beneath, an irregular-shaped stopper is placed to closely contact the bottom of the protruding end to push the crown cap on the top of the cylinder portion out of the protruding end.Type: GrantFiled: July 16, 2001Date of Patent: May 28, 2002Assignee: Future Top Medical Environment Technic Co., Ltd.Inventor: Bih-Chern Lin
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Patent number: 6383168Abstract: In accordance with an embodiment of the invention, a needleless injection apparatus includes a cartridge having a plunger disposed at a rearward end. The cartridge includes an inner portion with a throat at a forward portion and a displaceable outlet valve initially disposed within the cartridge throat. The cartridge further includes a generally outwardly facing surface and a system for selectively providing driving force to drive the plunger in a forward direction. The apparatus also includes a nozzle for receiving the cartridge, the nozzle defining a rearward, cartridge-receiving portion, and having a forward portion terminating in and defining a valve abutment surface with a plurality of channels and an injection orifice.Type: GrantFiled: March 30, 2000Date of Patent: May 7, 2002Assignee: Bioject Medical Technologies Inc.Inventors: Sergio Landau, James M. Bonicatto
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Patent number: 6132395Abstract: A cartridge and nozzle assembly for use in a needless injection system is provided.Type: GrantFiled: December 8, 1998Date of Patent: October 17, 2000Assignee: Bioject, Inc.Inventors: Sergio Landau, James M. Bonicatto
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Patent number: 6080461Abstract: Solid disks of polyethylene oxide are radiation crosslinked to instill viscoelastic memory. The disks are then pierced with a needle, heated, cooled and the needle removed to form disks containing a flow orifice in each which upon contact with water will revert to solid disks. A disk with a flow orifice made as just described when used as a memory flow control valve in a conventional injection device will produce a syringe with a single-use, auto-destruct capability. When the disk is inserted in a retainer in the flow channel of the injection device, a drug/vaccine can be drawn into the syringe and then expelled for a preselected time less than six minutes before the water in the drug/vaccine causes the flow orifice in the disk to close, the disk then reverting to its solid shape due to its viscoelastic memory.Type: GrantFiled: March 10, 1994Date of Patent: June 27, 2000Assignee: The Johns Hopkins UniversityInventors: John J. Wozniak, Michael C. Robertson
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Patent number: 6068614Abstract: A plastic pre-filled syringe which includes an open ended barrel sealed at one end by a moveable stopper and sealed at the other end by a closure frangibly connected to the syringe. The syringe also includes an overcap which can be moved so to engage with the closure whereby removal of the overcap will cause the closure to be separated from the rest of the syringe and reveal the contents for injection.Type: GrantFiled: June 23, 1997Date of Patent: May 30, 2000Assignee: Astra Pharmaceuticals PTY, Ltd.Inventors: Michael Browning Kimber, Frank Alexander Popovsky
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Patent number: 5908409Abstract: A device for forming a leakproof closure on the terminus of a tubing having an elastic wall. The device consists of a plug insertion tool and a plug. The plug is a elongate member having a convex distal end and a proximal end. The plug insertion tool has a handle portion which is dimensioned to be grasped by a user for manipulation. The distal end of the insertion tool has a rod projecting axially therefrom which is adapted to releasably engage the proximal end of the plug. The plug is dimensioned to fit snugly within the elastically distended lumen of the tubing. In operation, the plug insertion tool is releasably attached to the proximal end of the plug by engagement means such as mating threads and the distal end of the plug inserted into the open end of the tubing and advanced by means of the insertion tool. The intralumenal portion of the plug forms a leakproof seal with the elastic wall of the tubing.Type: GrantFiled: August 26, 1997Date of Patent: June 1, 1999Assignee: McGhan Medical CorporationInventors: Jason D. Rinehart, David J. Schuessler
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Patent number: 5643224Abstract: The invention relates to a safety valve plug to be used in pre-filled syringes, of the kind comprising a cylindrical hollow body into which a coaxial plunger is displaced, projecting outwardly from one of the bases; while a conical portion is defined at the opposite base, the conical portion receiving the injection needle and being called "plugging cone", the valve plug being snug fit inside said "plugging cone" with its end head bearing on the mouth thereof, said valve plug comprising a substantially cylindrical solid body having a conical end portion and the other portion, defining its head, being cylindrical and of a cross section larger than the rest of the body; the cylindrical body having, following said conical end, two faceted faces extending adjacent the head.Type: GrantFiled: January 27, 1995Date of Patent: July 1, 1997Inventors: Jaime Luis Szapiro, Leonardo Szames, Saul Moreno
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Patent number: 5637100Abstract: An improved syringe is provided which can be used in any step of preparation of a medicament by vacuum freeze-drying, etc., storage of a medicament, mixing of medicaments and dosing of a medicament in a sanitary and stable manner. The syringe comprises a cylinder having a front end part at one end and an opening part at another end and a bypass running in the longitudinal direction near the central position of the cylinder on the inner wall within the cylinder. A first sealing stopper is adapted, at a position toward the opening part of the cylinder from the bypass within the cylinder, to form a first compartment between the front end of the cylinder and the first sealing stopper. A second sealing is stopper adapted, at a position toward the opening part of the cylinder from the first sealing stopper within the cylinder, to form a second compartment between the first sealing stopper and second sealing stopper.Type: GrantFiled: October 3, 1995Date of Patent: June 10, 1997Assignee: Daikyo Seiko, Ltd.Inventor: Morihiro Sudo
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Patent number: 5558664Abstract: The device consists of: (a) an application reservoir or cell (1) whose base has a filling hole (4) for the solution and an opening that is fitted with a stopper (5) which presents micro-recesses on its periphery for administration of the solution on the skin; (b) a balloon (2) to pressurize and stabilize flow of the solution within the reservoir; and (c) a lid (3) to hermetically seal the aforesaid reservoir. The device is used in the form of a bracelet, abdominal belt or patch for application of solutions like trinitrine, oestradiols, etc. onto the skin.Type: GrantFiled: January 4, 1994Date of Patent: September 24, 1996Inventors: F. X. Sarzaud, Jean Perego, A. Cabrera
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Patent number: 5531255Abstract: A process and apparatus used in manufacturing prefilled, sterile delivery devices such as syringe assemblies. The process includes sealing a syringe container portion at both ends and filling the same through a port provided in the container portion between the two ends. After filling, the port is closed and sealed and the syringe assembly is sterilized to provide a sterile delivery device with sterile contents. A suitable syringe container portion for producing prefilled, sterile delivery devices is also disclosed.Type: GrantFiled: September 23, 1994Date of Patent: July 2, 1996Assignee: Mallinckrodt Medical, Inc.Inventor: Rita D. Vacca
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Patent number: 5531720Abstract: A kit for starting an I.V. is disclosed, as is a coupling for preventing blood and fluids from spilling out of the kit's catheter. The kit is comprised of a catheter portion, a coupling portion and a flesh piercing portion. The cannula portion includes a cannula having a hub. The coupling portion is comprised of first and second tubular portions, and a septum bound integrally therebetween. The flesh piercing portion is comprised of a needle and a handle. The method disclosed includes the steps of lodging the first tubular portion of a resilient coupling into the hub of a catheter; driving a guide needle axially through the coupling and catheter; driving the coupling and catheter into a vein; and withdrawing the guide needle from the catheter and coupling. Although blood flows into the catheter, it is prevented from flowing beyond the self-sealing septum.Type: GrantFiled: July 8, 1994Date of Patent: July 2, 1996Inventor: Stephen L. Atkins
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Patent number: 5531710Abstract: A closure is provided for a syringe of the type having a housing with a substantially tubular and cylindrical neck with a through bore through which the contents of the syringe are dispensed. The closure includes an elongated probe having a free end and a cross-sectional area substantially the same as the syringe through bore. The closure further includes a first and second tubular and cylindrical sealing ring. The first tubular and cylindrical ring has an inner diameter substantially the same as the outer diameter of the syringe neck while the second sealing ring is positioned concentrically around the first sealing ring. The sealing rings and probe are dimensioned so that, upon insertion of a free end of the probe into the syringe through bore, the probe and first sealing ring sealingly engage both the internal and external surfaces of the syringe neck. Simultaneously, the free ends of the first and second sealing ring sealingly engage the outer surface of the syringe housing.Type: GrantFiled: February 24, 1995Date of Patent: July 2, 1996Assignee: Courtaulds Aerospace, Inc.Inventors: Nguyen T. Dang, Lawrence B. Martin, Richard Jerrard
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Patent number: 5529189Abstract: A disposable single-use kit for administering a precise dose of radioactive tracer to a subject with an accuracy of at least 99.9% by weight. The kit comprises a syringe, pre-filled with a known quantity of a radioactive tracer as injectate. The back of a small-bore needle is affixed to the syringe front. The front of a removable plastic needle cover incorporates airtight means for creating and maintaining an airlock in the needle front, thereby to prevent any contact between the tracer and the cover and so preclude any loss of tracer upon removal of the cover from the needle. A valve normally seals the syringe back, the valve including actuatable means for enabling a fluid flow into the syringe back, both for pre-filling of the syringe with injectate and for flushing of the injectate from the syringe into the subject.Type: GrantFiled: August 2, 1995Date of Patent: June 25, 1996Assignee: Daxor CorporationInventor: Joseph Feldschuh
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Patent number: 5273542Abstract: The present invention is a hypodermic syringe pre-filled with a volume of a desired solution. A plug member is positioned within the hypodermic syringe in between the pre-filled fluid and the lumen of the syringe's cannula. The presence of the plug member within the hypodermic syringe separates the cannula from the pre-filled fluid thereby leaving the cannula unaffected by the presence of the fluid within the syringe. As the plunger of the hypodermic syringe is engaged, the pressure of the pre-filled fluid is increased. The fluid pressure acts upon the plug member, displacing the plug member when a predetermined fluid pressure is achieved. Once the plug member is displaced, the occlusion between the pre-filled fluid and the cannula is removed and the pre-filled fluid is free to flow through the lumen of the cannula.Type: GrantFiled: September 14, 1992Date of Patent: December 28, 1993Assignee: The Medtech Group, Inc.Inventor: Joseph W. Blake, III
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Patent number: 5098410Abstract: An infusion catheter adapter and cap assembly, the catheter adapter has a housing with an input, an output and a side port, normal to the housing axis, which has a cap. The cap is fixedly attached to the housing by a living hinge with a retaining knob. The retaining knob on the living hinge conjugates with a groove on the housing. The groove is formed as a transverse channel defined by two opposing locking fingers. The position of the retaining knob in the groove is further ensured by a recess on the knob which conjugates with a peak in the groove to center and lock the retaining knob in the groove.Type: GrantFiled: December 13, 1989Date of Patent: March 24, 1992Assignee: Becton, Dickinson and CompanyInventors: Walter L. Kerby, Rocky A. Revels, Kevin P. Woehr
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Patent number: 5000735Abstract: A hyperdermic syringe having a plunger which separates from a piston inside a barrel of the syringe after a downward stroke of the plunger preventing reuse of the syringe. The plunger breaks breakaway portions mounted inside the piston when pushed downward to unload the syringe effectively separating the plunger from the piston and destroying the syringe, preventing the piston from being withdrawn for the purpose of reloading the syringe. In another embodiment, a connector is used to releasably engage a plunger to a piston. Downward movement of the plunger causes upward extensions of the connector to move toward each other and lock together. The plunger disengages from the connector and piston after the extension lock together. A modified tip portion of a barrel containing a valve ball and valve flaps may be used to prevent the syringe from being used after a single use discharging medicinal fluid from the syringe. The valve ball blocks flow of medicinal fluid into the syringe after use of the syringe.Type: GrantFiled: January 5, 1989Date of Patent: March 19, 1991Assignee: The Regents of the Univ. of CaliforniaInventor: James P. Whelan
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Patent number: 4986278Abstract: A biopsy syringe for removing a specimen from a subject includes a tubular housing having a long hollow needle and two pistons. The first piston carries a mandrel received in the hollow needle. The second piston defines a chamber between it and the first piston enabling the syringe to be pre-loaded with a vacuum which is manually controllable so as to permit the first piston to be actuated to a retracted position in a smooth and simple manner while holding the biopsy syringe.Type: GrantFiled: December 18, 1989Date of Patent: January 22, 1991Inventors: Mordechai Ravid, Dan Kedem, Uzi Kedem
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Patent number: 4961728Abstract: A syringe assembly includes a barrel having an inside surface describing a chamber for retaining fluid, an open proximal end and a distal barrel end having a passageway therethrough in fluid communication with the chamber. A plunger rod includes an elongate body portion, a proximal end and a distal end with a stopper at the distal end. The stopper is 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 includes at least two proximally and outwardly facing non-parallel locking barbs, a distally and inwardly facing resisting edge and an inwardly facing driving edge. The driving edge is adaped to interact with the plunger rod to move the locking element along the barrel as the stopper is advanced distally along the barrel.Type: GrantFiled: December 30, 1988Date of Patent: October 9, 1990Assignee: Becton, Dickinson and CompanyInventor: Anthony J. Kosinski
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Patent number: 4952206Abstract: A single use syringe wherein the essential concept is to create a valve within the orifice that leads from the drug chamber into the chamber leading to the needle. The valve consists of a conical washer supported within the chamber by inclined barbs formed on its outer perimeter. The barbs will only allow the washer to move in one direction; toward an orifice at the needle end of the chamber. Initially the washer is positioned so that it does not impede fluid flow in either direction. Engaging the washer but not attached to it is an expansion plug. The expansion plug can absorb fluid and expand to force the washer against the opening leading to the needle, to thereby occlude fluid flow. The process is slow, taking at least several minutes, thereby permitting the syringe to be used once for its intended purpose before occlusion occurs.Type: GrantFiled: May 19, 1989Date of Patent: August 28, 1990Assignee: Anco Engineers, Inc.Inventors: Paul Ibanez, Frederick J. Gray
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Patent number: 4941876Abstract: The device comprises a cylindrical ampoule which is closed at one end and opened at the other end. The ampoule has a relatively large circular cylindrical zone adjacent the closed end and a relatively small cylindrical zone disposed between the relatively large cylindrical zone and the open end of the ampoule. A piston valve engages the open end of the ampoule to provide sealing engagement and dispensing of the liquid contents when desired. An intermediary stopper engages the relatively small cylindrical zone, when the stopper is in a storage position, to divide the ampoule into first and second storage compartments. The stopper is shaped to provide tight sealing engagement with the relatively small circular cylindrical zone while providing at least one opening, between its lateral surface and the interior wall of the ampoule, for allowing passage and mixing the substances contained in the compartments, when it is positioned in the relatively large circular cylindrical zone.Type: GrantFiled: December 10, 1987Date of Patent: July 17, 1990Assignee: Medicorp Holding S.A.Inventors: Gabriel Meyer, Ernst Howald
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Patent number: 4929230Abstract: A syringe for hypodermic injection wherein multiple pistons seal various number of chambers. One piston provides the basic operating force to dispell the contents from a chamber or successive chambers and another piston or other pistons forming a chamber or additional chambers permitting release of the chamber contents or successive chamber contents and a syringe holder for holding, using and disposing of the syringe minimizing potential of accidental sticking by the needle of the syringe.Type: GrantFiled: September 30, 1988Date of Patent: May 29, 1990Inventor: Frederick W. Pfleger
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Patent number: 4832693Abstract: A single use hypodermic needle syringe is constructed in a manner which provides for the automatic self destruction of the fluid passage during the initial use upon the first complete injection stroke. Because the fluid passage is destroyed upon the first initial use of the hypodermic needle syringe, the syringe is rendered useless and must be discarded. Because the syringe is discarded after one use, the spread of infectious diseases will be inhibited.Type: GrantFiled: October 9, 1987Date of Patent: May 23, 1989Inventor: Walter W. Gloyer
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Patent number: 4741737Abstract: A prefilled ampoule-syringe including an ampoule body having a smaller inner dimension than the body and a stopper means associated with an external capsule for closing the ampoule. The stopper is provided with an internal conduit having at least one transverse branch opening into a longitudinal branch between the interior of the capsule body and a needle-holding tip. The capsule is arranged for actual movement from a position within the neck where it is in a closed position to an open injection position within the ampoule body. When the capsule is in the position in the neck of the ampoule, the contents of the ampoule are in contact only with the walls of the ampoule and the inner surface of the stopper which faces into the neck. When the stopper is moved to injection position, the contents of the ampoule pass through the transverse passage and down the longitudinal passage to the needle holding tip for injection into a patient.Type: GrantFiled: October 2, 1986Date of Patent: May 3, 1988Assignee: Medicorp Holding S.A.Inventors: Gabriel Meyer, Ernst Howald
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Patent number: 4613326Abstract: A two-component syringe assembly includes an elongate barrel having a chamber for retaining fluid and a distal end having a passageway therethrough communicating with the chamber. A bypass stopper is slidably positioned in fluid-tight engagement inside the barrel. The barrel also includes a bypass defining a bypass zone positioned along the barrel for allowing fluid to flow around the bypass stopper when the bypass stopper is positioned intermediate the ends of the barrel in the bypass zone. A stopper is slidably positioned in fluid-tight engagement inside the barrel. A rigid plunger rod having an elongate body portion engages the stopper to facilitate its operation. A barrier flange is positioned on the body portion and intermediate the ends thereof.Type: GrantFiled: July 12, 1985Date of Patent: September 23, 1986Assignee: Becton, Dickinson and CompanyInventor: Joseph M. Szwarc
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Patent number: 4479801Abstract: A device in the form of a syringe having a barrel with a cylindrical neck portion in the end thereof and a plunger axially displaceable therein, a hollow needle and a hub securing the hollow needle to the open end of the barrel with a chamber in between dimensioned to have a cross section greater than the cross section of the bore and a sealing disc within the neck of the barrel mounted for displacement between sealing position for separating the needle from the barrel and unsealing position enabling fluid to flow from the barrel through the chamber to the needle.Type: GrantFiled: November 14, 1983Date of Patent: October 30, 1984Inventor: Milton J. Cohen
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Patent number: 4469482Abstract: The invention relates to a disposable syringe comprising a barrel in which a piston is provided and to which a needle is or can be connected to the front, a stopper being present in the barrel between piston and needle or needle connection means. The inner wall of the barrel is locally deformed between stopper and needle or needle connection so that at the area of the deformation injection liquid can reach the cannula past the stopper and during nurse-aspiration the stopper is held, in which body fluid can reach the part of the barrel present behind the stopper.Type: GrantFiled: July 26, 1982Date of Patent: September 4, 1984Assignee: Duphar International Research B.V.Inventors: Rokus C. D. Lissenburg, Paulus R. Kamstra
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Patent number: 4460357Abstract: A device in the form of a syringe having a barrel with a cylindrical neck portion in the end thereof and a plunger axially displaceable therein, a hollow needle and a hub securing the hollow needle to the open end of the barrel with a chamber in between dimensioned to have a cross section greater than the cross section of the bore and a sealing disc within the neck of the barrel mounted for displacement between sealing position for separating the needle from the barrel and unsealing position enabling fluid to flow from the barrel through the chamber to the needle.Type: GrantFiled: June 25, 1982Date of Patent: July 17, 1984Inventor: Milton J. Cohen
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Patent number: 4445896Abstract: A catheter plug for sealing the proximal end of a parenterally placed catheter and permitting repeated small volume injections and delivery of parenteral fluids without disturbing the sterility of the catheter. The catheter plug has a compression chamber for applying compression to a self-sealing elastometric septum thereby enhancing the septum's self-sealing characteristics. Compression force is applied to the septum by screw movement between oppositely threaded male and female couplers. The catheter plug is particularly useful in situations where pressures higher than arterial pressures are encountered or where it is desirable to leave the catheter indwelling for long periods of time.Type: GrantFiled: March 18, 1982Date of Patent: May 1, 1984Assignee: Cook, Inc.Inventor: Cesare Gianturco
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Patent number: 4436098Abstract: A needle assembly preferably suitable for single sample blood collection and for determining vein entry when collecting a blood sample from a patient into a vacuum collection device. This assembly includes a housing with an interior chamber having a blood inlet needle on one side of the housing and a blood outlet needle on the other. The outlet needle extends interiorly into the chamber, is open at its distal end and includes a side hole therethrough. A vent plug covers the side hole by surrounding the outlet needle inside the chamber, while a sealant plug covers the open end of the outlet needle. This arrangement prevents liquid from flowing into the holes while allowing gas to flow through the vent plug into the side hole for escape from the assembly whereby the prevented liquid may then be viewed by a user through a transparent portion of the housing.Type: GrantFiled: March 16, 1981Date of Patent: March 13, 1984Assignee: Becton Dickinson CompanyInventor: Joseph Kaufman