Patents Assigned to Gish Biomedical, Inc.
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Patent number: 5837905Abstract: A system and method for delivery of cardioplegic solution to the heart of a patient incorporates novel venturi flow cells individually adapted for insertion in the blood and crystalloid solution lines together with transducers for measuring a pressure drop across each venturi flow cell and transmitting it to a microprocessor to calculate flow rate for display on a monitor. The novel self-venting and self-priming transducers and venturi flow cells are incorporated in a disposable cassette. The transducers in the disposable cassette are removably snap connected to a hand set or plug housing which communicates with the computer or microprocessor and monitor. A novel variable ratio valve permits infinitely variable ratios of blood and crystalloid solution.Type: GrantFiled: July 24, 1996Date of Patent: November 17, 1998Assignee: Gish Biomedical, Inc.Inventors: Brian Strauss, George W. White, Kenneth M. Galt
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Patent number: 5762869Abstract: A blood oxygenator having a housing with an outer walled portion and a top portion and bottom portion. Blood is introduced through the bottom portion of the housing to be oxygenated by a fiber bundle having blood and oxygen flow. A blood outlet manifold in the upper portion of the housing is connected to a blood outlet on one end having a conical passage. The blood outlet manifold includes a reservoir with an increasing volume toward the conical passage and is sloped upwardly to enhance gaseous microemboli disentrainment. The wall of the housing decreases in dimension upwardly toward the blood outlet manifold, while the introduction of blood to the fibers is in a lesser ratio to the area adjacent the outlet manifold.Type: GrantFiled: July 24, 1996Date of Patent: June 9, 1998Assignee: Gish Biomedical, Inc.Inventors: George W. White, Brian M. Raze, Jeffrey P. Du Montelle
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Patent number: 5632894Abstract: A blood filter for use in filtering blood having side walls, a top, and a bottom joined to the side walls defining an axis with a filtration element surrounding at least a portion of the axis is disclosed. A delivery conduit delivers blood to the interior of the filter at an angle extending upwardly away from a plane which is perpendicular to the axis of the filter to form a vortex which is offset from the filter axis for release of entrapped air through an overlying top vent offset from the central axis, and an exit conduit connected to the interior of the filter element allows blood to flow from the filter element to an exit opening.Type: GrantFiled: June 24, 1994Date of Patent: May 27, 1997Assignee: Gish Biomedical, Inc.Inventors: George W. White, Kenneth Galt, Tichakorn Chaikumnerd, Jack W. Brown
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Patent number: 5466216Abstract: An antegrade/retrograde cardioplegia valve, system and method are provided. The valve includes conduits for entry of blood and cardioplegic solution, for pressure sensing, and for delivery of blood and cardioplegic solution to the aortic root by means of an aortic root cannula for antegrade infusion or to the coronary sinus by means of a coronary sinus cannula for retrograde infusion. Within the valve a cylindrical sliding member slides axially within an inner cylindrical chamber for selection of retrograde or antegrade infusion. An independent conduit communicates with the coronary sinus cannula for continuous coronary sinus pressure monitoring. A method and system incorporating the valve are also provided.Type: GrantFiled: April 11, 1994Date of Patent: November 14, 1995Assignee: Gish Biomedical, Inc.Inventors: Jack W. Brown, Brian Strauss, George W. White
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Patent number: 5279550Abstract: The following disclosure comprises a medical autotransfusion and blood drainage reservoir for withdrawing blood from the site of an operation under vacuum. A walled reservoir is connected to the operation site and a vacuum is drawn therein to draw fluids from the operation site. Vacuum is provided by a piston pump connected to check valves. The check valves allow for movement of the piston pump in one direction to discharge air therefrom, and in the other direction to withdraw air from the reservoir. Alternatively a spring driven bellows can be used to draw a vacuum with attendant check valves. The inlet of blood flow is through a filter. Blood is then capable of flowing outwardly to be reinfused by autotransfusion or reinfusion at a later time. Vacuum indication means and bleed off valves are included for maintenance of a proper vacuum.Type: GrantFiled: December 19, 1991Date of Patent: January 18, 1994Assignee: Gish Biomedical, Inc.Inventors: Magdi F. Habib, George W. White, Jack W. Brown
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Patent number: 5242425Abstract: A plastic coupler for a catheter assembly including a distal member for attachment to a catheter tube and having a female luer lock connector for separable interconnection with a male connector of a proximal member having a self-sealing material disposed within a through passage for injection and a outer protective cap containing a sponge saturated with an antiseptic to bathe the self-sealing material and interconnection with an antiseptic, and a method for maintaining a coupler for a catheter assembly in aseptic condition.Type: GrantFiled: November 14, 1991Date of Patent: September 7, 1993Assignee: Gish Biomedical, Inc.Inventors: George W. White, Jack W. Brown, Lisa A. Tam
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Patent number: 5158533Abstract: A combined cardiotomy and venous reservoir with filtration for autotransfusion of cardiotomy blood and venous blood during surgery and for postoperative wound site pleural drainage of shed blood for continued autotransfusion using the same unit. Vacuum regulation in the form of a manometer combined with a water seal are integral with the unit.Type: GrantFiled: March 26, 1991Date of Patent: October 27, 1992Assignee: Gish Biomedical, Inc.Inventors: Brian Strauss, Jack Brown
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Patent number: 5087250Abstract: The disclosure herein sets forth a pleural drainage/autotransfusion unit in combination with a cardiotomy reservoir having a vacuum regulating chamber in connected relationship to the pleural drainage/autotransfusion unit. The vacuum regulating chamber is formed of a portion of said cardiotomy reservoir unit and extends along the axial direction of the reservoir of the autotransfusion unit and can be connected to a source of vacuum. A water seal is interposed between the vacuum regulating chamber and the interior of the reservoir in order to provide for water sealed negative pressure within the reservoir. The function of the cardiotomy reservoir and the pleural drainage/autotransfusion unit can be changed by means of connections that have spring loaded tangs that engage a flange of a barbed inlet port.Type: GrantFiled: February 16, 1990Date of Patent: February 11, 1992Assignee: Gish Biomedical, Inc.Inventors: Leo J. Lichte, Jack W. Brown
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Patent number: 4969879Abstract: The disclosure herein discloses a levered set of barbs, tangs or jaws for engaging a shoulder of a port from a body fluid device. The port of the body fluid device can have a shoulder or a series of barbs and a shoulder. Interiorly of the connector is a resilient interior member. The interior member is sloped interiorly to match the end region of the port. It receives the end of the port in displaced relationship in a manner whereby the interior member provides a seat that deforms against the end of the port as well as deforming outwardly to provide an angularly sloped member and a resilient seat in combination with each other for an expanded seated seal.Type: GrantFiled: July 26, 1988Date of Patent: November 13, 1990Assignee: Gish Biomedical, Inc.Inventor: Leo J. Lichte
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Patent number: 4710176Abstract: A needle device which is designed for use with subcutaneous access catheter assemblies of the type having an interior chamber in which a needle provides fluid access thereto. The needle device of the invention comprises a needle having a vertical shank which is capable of puncturing the skin of a patient and extending into the fluid chamber of the subcutaneous device. An arm is connected to the needle shank through a generally right angled bend and has a fitting adapted for connection to a source of fluid to be introduced into or removed from the chamber of the subcutaneous catheter assembly. A mounting jacket is affixed to the perpendicularly located arm and has a section which extends over the fitting on the end of the arm as well as an integrally formed surface section extending outwardly therefrom and which is capable of being secured to the of the patient by means of a suitable surgical tape or the like.Type: GrantFiled: November 3, 1986Date of Patent: December 1, 1987Assignee: Gish Biomedical, Inc.Inventor: Richard L. Quick
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Patent number: 4592749Abstract: A catheter system in which a silicone rubber catheter tube may be secured to the cylindrically shaped relatively smooth stem of a rigid plastic fitting. A rigid plastic sleeve is adapted to extend over the tube when the latter is fitted onto the stem of the fitting to create a fluid tight seal between the tubing and the fitting. In another embodiment, a boot may first be disposed over a portion of the silicone rubber tubing and then extended over the connection of the rigid sleeve and rubber tubing and plastic fitting. In still a further embodiment a combination boot-sleeve may be employed and sealed to a fitting by means of an ultrasonic weld.Type: GrantFiled: June 22, 1984Date of Patent: June 3, 1986Assignee: Gish Biomedical, Inc.Inventors: Wendell V. Ebling, James H. DeVries
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Patent number: D483490Type: GrantFiled: February 20, 2002Date of Patent: December 9, 2003Assignee: Gish Biomedical, Inc.Inventor: Daniele Ghidoli
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Patent number: D299269Type: GrantFiled: February 6, 1986Date of Patent: January 3, 1989Assignee: Gish Biomedical, Inc.Inventors: Jeanne S. Pierson, Wendell V. Ebling, Jack W. Brown, Peter N. Cassimatis
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Patent number: D322124Type: GrantFiled: July 13, 1989Date of Patent: December 3, 1991Assignee: Gish Biomedical Inc.Inventors: Leo J. Lichte, Jack W. Brown