Piston Patents (Class 604/38)
  • Patent number: 9504816
    Abstract: A syringe cartridge includes a multi-mode device that defines at least two flow regimes having flow rates that differ in response to the same value of a variable. The multi-mode device defines three flow paths. The first flow path allows flow in only a first direction. The second flow path is configured to allow flow below a predetermined rate in a second direction opposite the first direction in response to a variable having a value below a threshold. The third path is configured to allow flow in the second direction at a rate higher than the predetermined rate in response to the variable reaching a value at or above the threshold.
    Type: Grant
    Filed: March 17, 2009
    Date of Patent: November 29, 2016
    Assignee: SyringeTech LLC
    Inventors: Jesse Bunch, Abraham Ingber
  • Patent number: 9409003
    Abstract: A device for targeted delivery of a substance to an airway may include a conduit and at least two applicators. The conduit may include a proximal end and a bifurcated distal portion having two distal ends. Each applicator may be coupled with one of the distal ends of the conduit and may be configured to direct the substance out of the applicator toward one of two sides of an airway. A method for targeted delivery of a substance to an airway may involve advancing a substance delivery device into the airway, contacting two sides of the airway with at least two applicators of the substance delivery device, such that each applicator contacts the airway near a glossopharyngeal nerve and/or a superior laryngeal nerve on each of the two sides of the airway, and delivering the substance through the applicators to contact the airway along the two sides.
    Type: Grant
    Filed: December 6, 2013
    Date of Patent: August 9, 2016
    Assignee: Cook Medical Technologies, LLC
    Inventors: Rush L. Bartlett, II, Ryan J. F. Van Wert, Stephen J. Ruoss, Amy E. Bartlett
  • Patent number: 8864719
    Abstract: A needle and receiver assembly for use with a syringe cartridge filled with medicine includes a cartridge receiver having a hollow interior, an open end sized for receiving at least part of the syringe cartridge, and a closed end opposite the open end. The assembly includes a needle mounted on the receiver having a fluid passage extending between a sharp delivery tip at a distal end of the needle and a sharp access tip at a proximal end of the needle opposite the delivery tip positioned inside the hollow interior of the receiver. The assembly includes a cutter movably mounted in the hollow interior of the receiver for movement relative to the receiver and the needle to cut the diaphragm of the cartridge when received in the hollow interior of the receiver.
    Type: Grant
    Filed: April 4, 2012
    Date of Patent: October 21, 2014
    Assignee: Covidien LP
    Inventors: David M. Selvitelli, Melvin A. Finke, Kathleen Tremblay
  • Patent number: 8777890
    Abstract: A method for administering a liquid medical substance in a vein. The method comprises inserting a plurality of tubular ducts into a target venous lumen, conducting a liquid medical substance via at least one of the plurality of tubular ducts (106, 215, 419, 602) for the administering thereof toward a venous wall (110, 410) at the target venous lumen in an ejection pressure, quantity and direction, and withdrawing a residue of the liquid medical substance from the target venous lumen, in a suction pressure, quantity and direction, for the conducting thereof via at least one different of the plurality of tubular ducts (130, 240, 400). A relation between the ejection pressure, quantity and direction and the suction pressure, quantity and direction limits the extent of the administering within the venous lumen to a predefined space.
    Type: Grant
    Filed: January 28, 2013
    Date of Patent: July 15, 2014
    Assignee: V.V.T. Med Ltd.
    Inventor: Zeev Brandeis
  • Patent number: 8622953
    Abstract: A selective filtering collection and delivery system for collecting and delivering autogenous bone to and from a surgical site is provided. The selective filtering collection device includes a suction nozzle, suction nozzle assembly and a vacuum source. Disposed in parallel between the suction nozzle assembly and the vacuum source are a removable filter cartridge and a filter bypass tube. A switch on the suction nozzle assembly may be actuated to provide suction to the suction nozzle through either the bypass tube or through the filter cartridge. When suction is applied through the filter cartridge, autogenous bone is collected on a filter medium within the cartridge. Additionally, the cartridge may be removed and directly placed into a delivery device. The delivery device includes a ratchet system that actuates a plunger base to accurately extrude the bone material from the filter cartridge into the desired surgical location.
    Type: Grant
    Filed: April 16, 2007
    Date of Patent: January 7, 2014
    Inventors: Richard A. Hynes, J. Todd Strong
  • Patent number: 8622997
    Abstract: A system in accordance with embodiments of the present invention includes a cannula interconnected to a collection vessel by a flexible conduit. The collection vessel can comprise an impermeable or permeable collection vessel. The collection vessel is contained within a collection container, and can feature a tapered end. An air inlet may be provided in the flexible conduit and/or in a collection canister lid.
    Type: Grant
    Filed: June 15, 2009
    Date of Patent: January 7, 2014
    Inventor: Ronald D. Shippert
  • Patent number: 8608642
    Abstract: An environmentally sensitive hydrogel material swells or collapses in response to a parameter such as pH level associated with consumption of food by a patient. This swelling or collapsing is harnessed to treat morbid obesity or some other condition of the patient. The swelling or collapsing of the hydrogel may be used to tighten a gastric band or gastric valve when the patient starts eating; then loosen the band or valve when the patient is between meals. The swelling or collapsing of the hydrogel may also be used to increase the size of a space occupying device in the patient's stomach when the patient starts eating; then decrease the size of the space occupying device when the patient is between meals. The swelling or collapsing of the hydrogel may also be used to selectively restrict the absorption of nutrients within a patient's gastrointestinal tract, such as in the duodenum.
    Type: Grant
    Filed: February 25, 2010
    Date of Patent: December 17, 2013
    Assignee: Ethicon Endo-Surgery, Inc.
    Inventors: Janna M. Burrell, Randal T. Byrum, Robert Louis Koch, Jr., Larry D. Pool, Christopher W. Widenhouse
  • Patent number: 8524154
    Abstract: A metabolite monitoring system comprising a microdialysis probe including a semi-permeable membrane and a probe flow path passing from an inlet through a sensing volume adjacent to said semi-permeable membrane to an outlet, a fluid delivery device for delivering dialysate to said inlet; and a metabolite monitoring system associated with said outlet for monitoring a concentration of at least one metabolite in said dialysate from said microdialysis probe, wherein said fluid delivery device is configured to deliver a pulsed flow of said dialysate to said inlet.
    Type: Grant
    Filed: November 8, 2007
    Date of Patent: September 3, 2013
    Assignee: G-Sense Ltd.
    Inventors: Avraham Shekalim, Noam Peleg
  • Patent number: 8460256
    Abstract: A fluid collection system includes a disposable collection container and a disposable collection container receiving housing, the housing having a cavity and a suction source. The fluid collection container may include a flexible liner and a shelf for diverting fluid from the suction and to assist with a collapse of the liner during evacuation of the fluid from the liner. The collection container receiving housing may include a piston assembly having a main piston body and a scraper ring. The collection container receiving housing may include a piston stop feature. The system may include a partially hydrophobic filter and a flat surface suction tool.
    Type: Grant
    Filed: July 15, 2010
    Date of Patent: June 11, 2013
    Assignee: Allegiance Corporation
    Inventors: Thomas L. Michaels, Russ A. Johnson, Eric D. Hill
  • Publication number: 20130123683
    Abstract: A device includes a hollow body delimiting a cavity for receiving the fluid, which cavity opens in a proximal opening and at least one distal opening for sampling and/or reinjection and a piston movably mounted in the receiving cavity to obturate the proximal opening. The device includes an assembly for selective distribution of a proximal part of the fluid located in the receiving cavity, including a fluid circulation channel that passes through the piston, which channel opens into the receiving cavity. The circulation channel and/or a distribution channel is able to cooperate or to communicate with an additional flow regulation device which can be manually actionable.
    Type: Application
    Filed: October 31, 2012
    Publication date: May 16, 2013
    Applicant: SYMATESE
    Inventor: SYMATESE
  • Publication number: 20130110036
    Abstract: An apparatus that includes two syringes, or a “double barrel syringe,” includes one syringe that injects or infuses while the other syringe aspirates. In the double barrel syringe, injection and aspiration may be effected by a single action. The double barrel syringe may include a handle with two members. A first member of such a handle includes one arm that pivotally couples to a plunger of a first syringe and another arm that pivotally couples to a barrel of a second syringe. A second member of the handle includes one arm that pivotally couples to a barrel of the first syringe and another arm that pivotally couples to a plunger of the second syringe. Methods for injecting or infusing simultaneously with aspirating are also disclosed.
    Type: Application
    Filed: December 21, 2012
    Publication date: May 2, 2013
    Applicant: CONTROL MEDICAL TECHNOLOGY, LLC
    Inventor: Shawn P. Fojtik
  • Publication number: 20130066260
    Abstract: An enteral fluid delivery and reflux collection system and method are disclosed. A fluid nutrient source container and administration tube are joined to an enteral feeding tube, and a gastric reflux tube connects a vented reflux collection syringe to selectively permit or prevent reflux collection, and/or to aspirate or flush the associated fluid lines.
    Type: Application
    Filed: October 19, 2012
    Publication date: March 14, 2013
    Applicant: NEOMED, INC.
    Inventor: NEOMED, INC.
  • Patent number: 8389023
    Abstract: Novel methods for the chemical ablation of tissue (e.g. prostatic tissue) are described. These methods include the steps of: (a) providing one or more solid salt dosage form comprising 50-100% w/w salt; and (b) inserting one or more of such solid salt dosage forms into the tissue. The solid salt dosage form is optionally inserted into the tissue under real-time ultrasonic observation. An advantage of the present invention is its ability to eliminate toxic byproducts. For example, where NaCl-based solid salt dosage forms are used to effect localized chemical ablation, the concentration is ultimately reduced to the level of normal saline (i.e., about 0.9%) upon absorption by the body of the subject being treated.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: March 5, 2013
    Assignee: Boston Scientific Scimed, Inc.
    Inventor: Joseph V. DiTrolio
  • Patent number: 8366656
    Abstract: A syringe comprises a barrel with a plunger in slidable and sealing engagement therein, and a needle attached to one end of the barrel. The barrel has an aspiration device in the form of manually-operable resilient portions, which can be operated to cause a pressure differential in the barrel, the pressure differential then being used to perform aspiration. The resilient portions are preferably formed by localized reductions of wall thickness in the external surface of the barrel.
    Type: Grant
    Filed: October 3, 2006
    Date of Patent: February 5, 2013
    Assignee: Star Syringe Limited
    Inventors: Graham John Madin, Marc Andrew Koska
  • Patent number: 8337450
    Abstract: An apparatus that includes two syringes, or a “double barrel syringe,” includes one syringe that injects or infuses while the other syringe aspirates. In the double barrel syringe, injection and aspiration may be effected by a single action. The double barrel syringe may include a handle with two members. A first member of such a handle includes one arm that pivotally couples to a plunger of a first syringe and another arm that pivotally couples to a barrel of a second syringe. A second member of the handle includes one arm that pivotally couples to a barrel of the first syringe and another arm that pivotally couples to a plunger of the second syringe. Methods for injecting or infusing simultaneously with aspirating are also disclosed.
    Type: Grant
    Filed: December 29, 2009
    Date of Patent: December 25, 2012
    Assignee: Control Medical Technology, LLC
    Inventor: Shawn P. Fojtik
  • Publication number: 20120277664
    Abstract: A multi-barrel syringe is disclosed for the dual function of delivering and drawing fluid from a target site. The syringe has at least two barrels that may be positioned coaxially relative to one another. One barrel may be pre-filled with sterile delivery fluid designed to irrigate catheter tubing. Another barrel may be provided for removing delivered fluid or other body fluid from a site. The syringe may orientate the barrels such that fluid passing in one barrel does not contact the other barrel. The syringe includes collapsible and extendable plungers for each barrel where each plunger is length adjustable. While in use, the syringe includes a locking mechanism to prevent movement of other plungers while one plunger is in use. Methods of using the described syringe are also provided.
    Type: Application
    Filed: April 27, 2012
    Publication date: November 1, 2012
    Inventor: Bradford Macy, JR.
  • Patent number: 8062286
    Abstract: A system in accordance with embodiments of the present invention includes a cannula interconnected to a collection vessel by a flexible conduit. The collection vessel can comprise one or more syringe bodies. The syringe bodies are provided with tissue removed from a body using the cannula by a tissue transfer channel. As a result, multiple syringe bodies can be loaded with tissue, without requiring manual handling of that tissue. Alternatively or in addition, a collection bag can be provided for receiving tissue removed from a body using a cannula. The tissue collection bag can include a filter. A collection vessel comprising a collection bag can be used in combination with a collection vessel comprising one or more syringe bodies.
    Type: Grant
    Filed: March 11, 2008
    Date of Patent: November 22, 2011
    Inventor: Ronald D. Shippert
  • Publication number: 20110184338
    Abstract: A catheter for drainage of a wound and delivery of a therapeutic agent at or near the wound of a patient is provided. The catheter comprises: a proximal end configured to receive the therapeutic agent and permit passage of bodily fluid, the proximal end configured to be coupled to a drainage tube and/or a therapeutic agent delivery device; a distal end for insertion at or near the wound; and a body disposed between the proximal end and distal end of the catheter and configured to receive the therapeutic agent from the proximal end of the catheter, the body having a first set of holes configured to allow passage of the therapeutic agent from the proximal end to a site at or near the wound and the body having a second set of holes configured to allow drainage of bodily fluid from the wound into the catheter.
    Type: Application
    Filed: January 28, 2010
    Publication date: July 28, 2011
    Applicant: WARSAW ORTHOPEDIC, INC., An Indiana Corporation
    Inventor: William F. McKay
  • Publication number: 20110152754
    Abstract: Disclosed herein is a bone graft applicator assembly including a specially designed applicator, attached to a reservoir of bone graft material, such that the graft material can be moved into the delivery portion while the tip of the delivery portion is in place. The instantly disclosed device allows for the collapse of the delivery tip so that the tip can be placed between vertebras or alternatively within any bony structure or implant where the placement of bone graft material would be desirable, and then expanded to allow the bone graft material to be placed between the vertebras or the like while maintaining the geometry of the space into which the bone graft material is being placed.
    Type: Application
    Filed: December 16, 2010
    Publication date: June 23, 2011
    Inventors: Jeffrey B. Cantor, Banning G. Lary, Todd P. Lary
  • Patent number: 7892202
    Abstract: An inflation syringe having an improved display and method of displaying pressurization information. More particularly, the present invention relates to methods and apparatuses for providing both numeric and non-numeric indications of an inflation pressurization associated with an inflation syringe. According to one embodiment of the present invention, a progressive non-numeric display is provided for displaying the pressurization of the inflation syringe along with numeric indicators of the pressurization. The progressive display includes a plurality of indicia corresponding to a range of inflation pressurization values. The indicia are actuated to indicate inflation pressurization and to allow the practitioner to not only easily monitor the general intensity of the pressurization but to monitor changes in the pressurization without needing to interpret numerical values.
    Type: Grant
    Filed: May 9, 2008
    Date of Patent: February 22, 2011
    Assignee: Merit Medical Systems, Inc.
    Inventors: Fred P. Lampropoulos, Steve Taylor, Thomas Stout, Jim Mottola, Blaine Johnson
  • Patent number: 7875001
    Abstract: A nasal spray apparatus for simultaneously administrating metered amounts of multiple medicaments includes chambers for separately storing incompatible medicaments, such as an antihistamine and a steroid. Reciprocal piston pumps allow the medications to be sprayed into the user's nasal cavity. Two pumps can be used to separately transfer the medicaments to a receptacle where they can be initially mixed just prior to administration. A small volume receptacle is used to reduce the amount of mixture remaining after each stroke of the nasal spray apparatus. A check valve can be associated with each pump to further reduce medicament mixtures from cross contamination within storage chamber preparations. Collapsible components, including collapsible storage chambers or balloon capacitors can be employed to compensate for vacuums and back pressures as the medicaments are pumped to a spray nozzle.
    Type: Grant
    Filed: February 25, 2008
    Date of Patent: January 25, 2011
    Inventor: Americo Michael Minotti
  • Patent number: 7815609
    Abstract: An infusion system comprises a disposable wearable infusion device having a body arranged to be adhered to a patient's skin and a reservoir for holding a liquid medicament to be infused into the patient. The infusion system further comprises a filler device arranged to be detachably received by the infusion device and to provide a positive pressure directly to the liquid medicament to transfer a volume of the liquid medicament to the infusion device reservoir.
    Type: Grant
    Filed: December 19, 2007
    Date of Patent: October 19, 2010
    Assignee: Calibra Medical, Inc.
    Inventors: Craig Hines, Cory Williamson
  • Patent number: 7794449
    Abstract: The present invention provides for the transplantation of tissue from a donor site in a body to a recipient site. The device includes an outer chamber having an interior volume in which a perforated inner chamber can be placed. During the aspiration of tissue, a vacuum is formed in the interior volume of the outer chamber, to draw tissue from a cannula into the perforated inner chamber. The perforations are sized such that fat is collected within the inner chamber, while fluids and other materials are drawn through the perforations, away from the collected fat. For reinjection, the inner chamber can be removed from the outer chamber, and a sleeve positioned to cover the perforations and thereby form a syringe body that can be interconnected to a needle and plunger for reinjection of the collected fat.
    Type: Grant
    Filed: March 23, 2005
    Date of Patent: September 14, 2010
    Inventor: Ronald D. Shippert
  • Patent number: 7789872
    Abstract: A system in accordance with embodiments of the present invention includes a cannula interconnected to a washing reservoir by a flexible conduit. The washing reservoir has an outlet that is connected to the inlet of a tissue collection reservoir. Washed tissue can be removed from the washing reservoir by tipping or otherwise causing the outlet of the washing reservoir to be covered by washed tissue. Tissue collected in the tissue collection reservoir can be readied for injection into a body by removing an inner or filter chamber from an outer chamber and blocking holes in the body of the inner chamber to use the inner chamber as part of a syringe.
    Type: Grant
    Filed: October 27, 2006
    Date of Patent: September 7, 2010
    Inventor: Ronald D. Shippert
  • Patent number: 7780649
    Abstract: A system in accordance with embodiments of the present invention includes a cannula interconnected to a collection vessel by a flexible conduit. The collection vessel can comprise one or more syringe bodies. The syringe bodies are provided with tissue removed from a body using the cannula by a tissue transfer channel. As a result, multiple syringe bodies can be loaded with tissue, without requiring manual handling of that tissue. Alternatively or in addition, a collection bag can be provided for receiving tissue removed from a body using a cannula. The tissue collection bag can include a filter. A collection vessel comprising a collection bag can be used in combination with a collection vessel comprising one or more syringe bodies.
    Type: Grant
    Filed: April 30, 2007
    Date of Patent: August 24, 2010
    Inventor: Ronald D. Shippert
  • Patent number: 7766987
    Abstract: An apparatus and method used in a urological procedure. The apparatus includes a sheath capable of insertion into a passageway within a patient. A filter is provided that includes a mesh that retains any particulate matter that is entrained with the liquid and allows the liquid to pass therethrough. The filter may be removeably attached to receive flow from an outlet of the sheath.
    Type: Grant
    Filed: April 23, 2007
    Date of Patent: August 3, 2010
    Assignee: Vance Products Incorporated
    Inventors: Jaime Landman, Walter N. Ryan
  • Patent number: 7722560
    Abstract: A bowel extension device implantable into a body for treatment of short bowel syndrome. The bowel extension device comprises a housing and a displaceable member coupled to the housing. The bowel extension device is configured to apply a tensile force sufficient to promote bowel growth without causing damage to the bowel. In some embodiments, the bowel extension device can be completely contained with the body.
    Type: Grant
    Filed: February 9, 2007
    Date of Patent: May 25, 2010
    Assignee: The Regents of the University of Michigan
    Inventors: Daniel H. Teitelbaum, Jonathan E. Luntz, Ariel Uzziah Spencer, Diann E. Brei
  • Publication number: 20100106081
    Abstract: There is provided herein a system, device and methods for performing minimally invasive spider vein treatments. In some embodiments an apparatus for eliminating spider veins comprises a dual syringe mechanism that includes a pusher for pushing sclerosant materials into a target vein, and an extractor for extracting debris from a target vein; a needle for application into a target vein; and a Y-connector connecting each exit of the dual syringe mechanism to the needle. In some implementations the apparatus's dual syringe mechanism includes a locking mechanism to enable controlled advancing of the syringe pusher.
    Type: Application
    Filed: April 2, 2009
    Publication date: April 29, 2010
    Inventor: Zeev Brandeis
  • Patent number: 7674247
    Abstract: An apparatus that includes two syringes, or a “double barrel syringe,” includes one syringe that injects or infuses while the other syringe aspirates. The double barrel syringe is a hand-held, hand-operated device with which injection and aspiration may be effected by a single action. The double barrel syringe may include a handle with two member. A first member includes one arm that pivotally couples to a plunger of a first syringe and another arm that pivotally couples to a barrel of a second syringe. A second member of the handle includes one arm that pivotally couples to a barrel of the first syringe and another arm that pivotally couples to a plunger of the second syringe. Methods for injecting or infusing simultaneously with aspirating are also disclosed.
    Type: Grant
    Filed: October 23, 2007
    Date of Patent: March 9, 2010
    Assignee: Control Medical Technology, LLC
    Inventor: Shawn P. Fojtik
  • Publication number: 20100056989
    Abstract: Described are novel medical delivery devices that can be used to effectively distribute a medical agent to multiple sites within a tissue volume without requiring the device to be repositioned, including for example to distribute the medical agent within the nucleus pulposus tissue of a spinal disc. Also described are medical delivery devices configured to simultaneously remove fluid from the tissue volume into which a medical agent is being delivered, thus avoiding or otherwise decreasing any pressure build-up and facilitating an effective, uniform delivery of the therapeutic agent.
    Type: Application
    Filed: October 26, 2009
    Publication date: March 4, 2010
    Applicant: Warsaw Orthopedic, Inc.
    Inventor: William F. McKay
  • Patent number: 7530976
    Abstract: The control of fluid introduction into and out of body conduits such as vessels, is of great concern in medicine. As the development of more particular treatments to vessels and organs continues it is apparent that controlled introduction and removal of fluids is necessary. Fluid delivery and removal from such sites, usually referred to as irrigation and aspiration, using fluid exchange devices that control also need to be considerate of potential volume and/or pressure in the vessel or organ are described together with catheter and lumen configurations to achieve the fluid exchange. The devices include several electrically or mechanically controlled embodiments and produce both controlled and localized flow with defined volume exchange ratios for fluid management. The applications in medicine include diagnostic, therapeutic, imaging, and uses for the introduction or removal of concentrations of emboli within body cavities.
    Type: Grant
    Filed: July 30, 2004
    Date of Patent: May 12, 2009
    Assignee: Fox Hollow Technologies, Inc.
    Inventors: John M. MacMahon, Thomas G. Goff, Brian K. Courtney
  • Publication number: 20090088682
    Abstract: A wearable infusion device comprises a component that causes a piston to move an incremental distance to cause the device to dispense a dose of medicament from a reservoir.
    Type: Application
    Filed: September 28, 2007
    Publication date: April 2, 2009
    Inventors: Brett Cross, Brett J. Carter, John M. Adams, John R. McKenzie, Tom A. Saul
  • Patent number: 7481764
    Abstract: A device (1) which includes an elongate body (2) with a movable mass (3) arranged for sliding movement within the body (2), the element (4) being arranged to decelerate toward an end of the body (2) in order to impart forward movement thereto, via momentum transfer, and being arranged to accelerate away from said end in order to further drive the body (2) forward, again using momentum transfer.
    Type: Grant
    Filed: December 20, 2002
    Date of Patent: January 27, 2009
    Assignee: Endogene Pty Ltd.
    Inventors: Mikhail Soutorine, Nurbey Gulia, Igor Tchepikov
  • Patent number: 7452344
    Abstract: A single-use system for separating blood and producing platelet concentrates includes an elongated container for receiving blood from a patient. The container has a movable plunger mounted within the blood container for expressing blood fractions separated during centrifugation of the container through a first port mounted at one end of said container, a second port mounted on the plunger, and a third port mounted on a plunger rod attached to the plunger.
    Type: Grant
    Filed: February 23, 2004
    Date of Patent: November 18, 2008
    Assignee: Biomet 3i, LLC
    Inventors: Glen E. Jorgensen, Bruce Berckmans, III
  • Patent number: 7363072
    Abstract: To accomplish isolation and removal of a substance from a vasculature, a catheter is employed to occlude a vessel of the vasculature. The substance is thus isolated in the vasculature and can be removed. In this way, the substance is removed before entering other parts of the circulatory system. This method is applicable to removal of contrast from the coronary sinus shortly after injection of the coronary arteries with the contrast. The method substantially minimizes or avoids renal dysfunction caused by angiographic procedures in which contrast must be injected. Such angiographic procedures are often performed during intervention procedures. This method substantially prevents circulation of the contrast to the kidneys where it could otherwise cause renal dysfunction or failure. The apparatus for implementation of the method is also disclosed.
    Type: Grant
    Filed: January 23, 2002
    Date of Patent: April 22, 2008
    Assignee: Catharos Medical Systems, Inc.
    Inventor: M. Reza Movahed
  • Publication number: 20080065088
    Abstract: Bone cement mixing systems and related methods are disclosed. The bone cement mixing systems can include a first chamber, a second chamber, and a passage fluidly connecting the first and second chambers. A first piston can be disposed in the first chamber, and a second piston can be disposed in the second chamber.
    Type: Application
    Filed: August 29, 2007
    Publication date: March 13, 2008
    Applicant: WYETH
    Inventors: Martin Hughes, Darren Seymour, Colin Turner, Paul Harmer, Richard Cornell, Howard Seeherman
  • Patent number: 7297132
    Abstract: A shape memory shutter device for controlling the rectum of a disabled person, comprises a section of conduit to be connected to the rectum of the disabled person, and a shutter which controls the passage through the conduit section and actuated by a shape memory actuator. The shutter comprises a plurality of petals positioned circumferentially around the conduit section and able to move between a closed and an open position. The actuator comprises shape memory wires associated to the petals which are supplied with electrical current to cause opening of the petals.
    Type: Grant
    Filed: April 28, 2005
    Date of Patent: November 20, 2007
    Assignee: C.R.F. Societa Consortile per Azioni
    Inventors: Piero Perlo, Valentina Grasso
  • Patent number: 7087037
    Abstract: There is provided an injector having a gasket held in excellent intimate contact with an inner wall surface of a barrel and shortened in overall length. A gasket is joined to a mount base disposed on a tip end of a plunger and having a bendable portion which bends toward an axis of the plunger radially outwardly of the mount base. The gasket is joined to the mount base with a gap left for allowing the bendable portion to bend toward the tip end of the plunger when the gasket slides toward an injection needle. The gasket is made of a synthetic resin having an A-scale Shore hardness in the range from 20 to 70. The gasket has a groove define therein radially outwardly of the mount base, and the bendable portion comprises a portion of the gasket disposed radially outwardly of the groove.
    Type: Grant
    Filed: March 9, 2001
    Date of Patent: August 8, 2006
    Assignee: Kabushiki Kaisha Top
    Inventors: Atsushi Chiba, Kazuhiro Ichikawa
  • Patent number: 6878128
    Abstract: The control of fluid introduction into and out of body conduits such as vessels, is of great concern in medicine. As the development of more particular treatments to vessels and organs continues it is apparent that controlled introduction and removal of fluids is necessary. Fluid delivery and removal from such sites, usually referred to as irrigation and aspiration, using fluid exchange devices that control also need to be considerate of potential volume and/or pressure in the vessel or organ are described together with catheter and lumen configurations to achieve the fluid exchange. The devices include several electrically or mechanically controlled embodiments and produce both controlled and localized flow with defined volume exchange ratios for fluid management. The applications in medicine include diagnostic, therapeutic, imaging, and uses for the introduction or removal of concentrations of emboli within body cavities.
    Type: Grant
    Filed: April 6, 2004
    Date of Patent: April 12, 2005
    Assignee: Kerberos Proximal Solutions
    Inventors: John M. MacMahon, Thomas G. Goff, Brian K. Courtney
  • Patent number: 6827701
    Abstract: The control of fluid introduction into and out of body conduits such as vessels, is of great concern in medicine. As the development of more particular treatments to vessels and organs continues it is apparent that controlled introduction and removal of fluids is necessary. Fluid delivery and removal from such sites, usually referred to as irrigation and aspiration, using fluid exchange devices that control also need to be considerate of potential volume and/or pressure in the vessel or organ are described together with catheter and lumen configurations to achieve the fluid exchange. The devices include several electrically or mechanically controlled embodiments and produce both controlled and localized flow with defined volume exchange ratios for fluid management. The applications in medicine include diagnostic, therapeutic, imaging, and uses for the introduction or removal of concentrations of emboli within body cavities.
    Type: Grant
    Filed: July 17, 2002
    Date of Patent: December 7, 2004
    Assignee: Kerberos Proximal Solutions
    Inventors: John M. MacMahon, Thomas G. Goff, Brian K. Courtney
  • Publication number: 20030108511
    Abstract: Biocompatible crosslinked polymers, and methods for their preparation and use with minimally invasive surgery applicators are disclosed. The disclosure includes compositions and methods for in situ formation of hydrogels using minimally invasive surgical techniques.
    Type: Application
    Filed: December 13, 2002
    Publication date: June 12, 2003
    Inventor: Amarpreet S. Sawhney
  • Publication number: 20030014005
    Abstract: There is provided an injector having a gasket held in excellent intimate contact with an inner wall surface of a barrel and shortened in overall length. A gasket 6 is joined to a mount base 10 disposed on a tip end of a plunger 5 and having a bendable portion 14 which bends toward an axis of the plunger 5 radially outwardly of the mount base 10. The gasket 6 is joined to the mount base 10 with a gap left for allowing the bendable portion 14 to bend toward the tip end of the plunger 5 when the gasket 6 slides toward an injection needle 2. The gasket 6 is made of a synthetic resin having an A-scale Shore hardness in the range from 20 to 70. The gasket 6 has a groove 16 defined therein radially outwardly of the mount base 10, and the bendable portion 14 comprises a portion of the gasket 6 disposed radially outwardly of the groove.
    Type: Application
    Filed: August 15, 2002
    Publication date: January 16, 2003
    Inventors: Atsushi Chiba, Kazuhiro Ichikawa
  • Patent number: 6494896
    Abstract: A hand-held applicator delivers liquid or semi-liquid compositions, such as adhesives, to an internal tissue or organ in an even and controlled manner. The applicator includes a pump, a tubular extension that is thin enough to pass through an endoscopic pathway or trocar, a proximal end of the tubular extension being sealingly connected to the pump, and an applicator tip that attaches to the distal end of the tubular extension. The tip includes the liquid and the pump pumps the liquid to the internal tissue in an even and controlled manner without contact of the liquid by the pump. The pump is preferably a micropipetter that includes a hand-held portion having a hand-actuatable plunger that does not come in direct, physical contact with the liquid to be dispensed. The composition may be an adhesive such as an alpha-cyanoacrylate. The device may further include a wound closure device including at least two closure pins extending from the distal end of the tubular extension.
    Type: Grant
    Filed: November 30, 1999
    Date of Patent: December 17, 2002
    Assignee: Closure Medical Corporation
    Inventors: Keith R. D'Alessio, Lawrence H. Mainwaring
  • Patent number: 6458094
    Abstract: A disposable insertion tip for a body cavity cleaning or irrigation device includes at least one tear strip. Once attached to the cleaning device, the insertion tip is sealingly locked in a predetermined position permitting liquid to be dispensed into a body cavity and used liquid to be returned from the body cavity through respective interior chambers provided in the insertion tip. The tip cannot be removed without first tearing the tear strip, which once torn, disables the sealing capability of the tip relative to the cleaning device. The insertion tip is preferably made from a transparent material which permits a user to view the efficacy of a cleaning procedure and to note when removal of the tip is required.
    Type: Grant
    Filed: April 11, 2001
    Date of Patent: October 1, 2002
    Assignee: Welch Allyn, Inc.
    Inventors: Michael McMahon, Stephen Burnett, James A. Caryl, William R. Witkowski
  • Patent number: 6436143
    Abstract: The method and apparatus as shown in FIGS. 8-10 in which a fluid expandable member (208) is positioned in concentric relation about a needle (202). The fluid expandable member (208) is expanded into the nucleus pulposus potential space bordered by the annulus fibrosus of an intervertebral disk. Then, thermoplastic material in a flowing state is injected by a needle (202) within the annulus fibrosus to collapse the fluid expandable member (208) and occupy the space formerly occupied by the fluid expandable member (208).
    Type: Grant
    Filed: May 12, 2000
    Date of Patent: August 20, 2002
    Inventors: Anthony C. Ross, Peter A. Guagliano
  • Patent number: 6368300
    Abstract: An apparatus and method apply a hemostatic agent onto a tissue. The apparatus includes a tube having a first end and a second end. A lumen of the tube is tapered from the first end to the second end. A hemostatic agent source is within the tube. A plunger is included for directing the hemostatic agent from the tapered tube through an opening at the second end. The hemostatic agent can be directed from the tube through the opening of the second end onto the tissue.
    Type: Grant
    Filed: February 22, 2000
    Date of Patent: April 9, 2002
    Assignee: C. R. Bard, Inc.
    Inventors: Timothy J. Fallon, John G. Maresh, James A. Wilkie
  • Publication number: 20020010429
    Abstract: A dose dispensing device such as a medicine dropper is improved by putting a dosing scales such as a body weight scale directly on the dose dispensing device. This improved device is used to simultaneously calculate and measure an exact dose of liquid medicine, based on the body weight of the patient.
    Type: Application
    Filed: May 17, 2001
    Publication date: January 24, 2002
    Inventor: Jack Raymond Grogan
  • Publication number: 20020007142
    Abstract: An injector device for delivery of liquid from a high pressure, the device comprising a housing, a pressure chamber 2 comprising a pressure barrel 4 for accommodation of at least one piston therein and having a front end opening 6 for ejection of the liquid, the pressure chamber being of sufficient strength to sustain the liquid pressure. The device further comprises a storage chamber 16, separate from the pressure chamber, for the liquid or the liquid precursor components, and a conduit 22 between the pressure chamber and the storage chamber. A pressurizing mechanism 26 in the housing is arranged to apply force, directly or indirectly, on the piston in the pressure barrel to create said liquid pressure.
    Type: Application
    Filed: May 22, 2001
    Publication date: January 17, 2002
    Inventors: Birger Hjertman, Jonas Fridholm
  • Patent number: 6027471
    Abstract: An apparatus and method apply a hemostatic agent onto a tissue. The apparatus includes a tube having a first end and a second end. A lumen of the tube is tapered from the first end to the second end. A hemostatic agent source is within the tube. A plunger is included for directing the hemostatic agent from the tapered tube through an opening at the second end. The hemostatic agent can be directed from the tube through the opening of the second end onto the tissue.
    Type: Grant
    Filed: June 9, 1997
    Date of Patent: February 22, 2000
    Inventors: Timothy J. Fallon, John G. Maresh, James A. Wilkie
  • Patent number: RE43434
    Abstract: The method and apparatus as shown in FIGS. 8-10 in which a fluid expandable member (208) is positioned in concentric relation about a needle (202). The fluid expandable member (208) is expanded into the nucleus pulposus potential space bordered by the annulus fibrosus of an intervertebral disk. Then, thermoplastic material in a flowing state is injected by a needle (202) within the annulus fibrosus to collapse the fluid expandable member (208) and occupy the space formerly occupied by the fluid expandable member (208).
    Type: Grant
    Filed: August 20, 2004
    Date of Patent: May 29, 2012
    Inventors: Anthony C. Ross, Peter A. Guagliano