Unilimb Inhalation-exhalation Breathing Tubes Patents (Class 128/911)
  • Patent number: 8973581
    Abstract: The present invention relates to a device for delivering a supply of gases to a patient. The device includes a patient interface and connecting member. The connecting member is preferably a L-shaped swiveled connector that is capable of being fixed into one of two positions, a first position where the connector is freely rotatable within the patient interface, and a second position where an interference between the interface and connector prevents the free rotation of the connector within the patient interface, The present invention further relates to a connector that has outlet means, which includes at least one outlet vent and a funnel, which in use directs and passes a substantial portion gases expired from the patient through the outlet vent or vents.
    Type: Grant
    Filed: August 27, 2012
    Date of Patent: March 10, 2015
    Assignee: Fisher & Paykel Healthcare Limited
    Inventors: Nicholas Charles Alan Smith, Alastair Edwin McAuley, Chris Earl Nightingale, Ivan Milivojevic, Lewis George Gradon
  • Patent number: 8485181
    Abstract: The present invention relates to a method and a system for controlling breathing of a patient. A system for controlling breathing of a patient includes a respiratory conduit. The respiratory conduit is configured to be coupled to a patient interface device and is further configured to be coupled to a pressurized air generating device. The respiratory conduit includes at least two air flow control devices, positioned between the patient interface device and the pressurized air generating device. The respiratory conduit includes at least two volumes, wherein one volume is positioned between a first air flow control device and a second air flow control device and another volume is positioned between a second air flow control device and a third air flow control device.
    Type: Grant
    Filed: March 7, 2011
    Date of Patent: July 16, 2013
    Assignee: The Periodic Breathing Foundation, LLC
    Inventor: Robert W. Daly
  • Patent number: 8267091
    Abstract: The present invention relates to a device for delivering a supply of gases to a patient. The device includes a patient interface and connecting member. The connecting member is preferably a L-shaped swivelled connector that is capable of being fixed into one of two positions, a first position where the connector is freely rotatable within the patient interface, and a second position where an interference between the interface and connector prevents the free rotation of the connector within the patient interface. The present invention further relates to a connector that has outlet means, which includes at least one outlet vent and a funnel, which in use directs and passes a substantial portion gases expired from the patient through the outlet vent or vents.
    Type: Grant
    Filed: August 6, 2009
    Date of Patent: September 18, 2012
    Assignee: Fisher & Paykel Healthcare Limited
    Inventors: Nicholas Charles Alan Smith, Lewis George Gradon, Alastair Edwin McAuley, Christopher Earl Nightingale, Ivan Milivojevic
  • Patent number: 8230857
    Abstract: The invention pertains to a ventilator that delivers a flow of gas to an airway of a user, and to communicate a flow of gas from the airway of the user in a controlled manner. The ventilator includes a conduit (1, 3) that carries a flow of gas from the airway of a patient, a first valve (7) coupled to the conduit and adapted to control a pressure or rate of the flow of gas exhausted from the conduit, a first sensor (10) coupled to the conduit and adapted to monitor a pressure of the gas in the conduit, and a controller (12) adapted to control the first valve based on an output of the first sensor. A restrictor (8) is provided in the conduit between the pressure sensor and the patient such that a first volume is defined in the conduit between the first valve and the restrictor and a second volume is defined in the conduit between the patient and the restrictor. The controller controls actuation of the first valve based on a pressure of the first volume monitored by the first sensor.
    Type: Grant
    Filed: November 9, 2005
    Date of Patent: July 31, 2012
    Assignee: RIC Investments, LLC.
    Inventor: Göran Cewers
  • Patent number: 8215304
    Abstract: A condensate separator is provided for a coaxial tube system, which has an inner gas duct (3) and an outer gas duct (4). A first liquid duct (10) is arranged between the inner gas duct and a first collection volume (8) and a second liquid duct (11) is located between the outer gas duct (4) and a second collection volume (9). The collection volumes (8, 9) are located with a partition (7) in between in a liquid collecting container (6).
    Type: Grant
    Filed: October 1, 2009
    Date of Patent: July 10, 2012
    Assignee: Dräger Medical GmbH
    Inventors: Thomas Reinboth, André Huschke, Axinja Schönbeck
  • Patent number: 8074646
    Abstract: The present invention relates to a method and a system for controlling breathing of a patient. A system for controlling breathing of a patient includes a respiratory conduit. The respiratory conduit is configured to be coupled to a patient interface device and is further configured to be coupled to a pressurized air generating device. The respiratory conduit includes at least two air flow control devices, positioned between the patient interface device and the pressurized air generating device. The respiratory conduit includes at least two volumes, wherein one volume is positioned between a first air flow control device and a second air flow control device and another volume is positioned between a second air flow control device and a third air flow control device.
    Type: Grant
    Filed: April 17, 2007
    Date of Patent: December 13, 2011
    Inventor: Robert W. Daly
  • Patent number: 8025059
    Abstract: Device for ventilation with a double lumen endotracheal tube featuring a connecting piece at the end distal to the patient into which the two lumina of the endotracheal tube are extended, separated within the connecting piece by an axial partition wall, a connector with two nozzles leading to a joint connecting section and separated from each other by another partition wall, the connector being attachable to the connecting piece in a way that brings the partition wall and the other partition wall into a sealing contact, a ventilator and at least one tube connected to a nozzle of the connector at one end and to the ventilator at the other.
    Type: Grant
    Filed: April 15, 2004
    Date of Patent: September 27, 2011
    Assignee: Hajo Reissman
    Inventor: Hajo Reissmann
  • Patent number: 7921846
    Abstract: A heat and moisture exchanger for both conducting a stream of air produced by a ventilator to a moisturizing medium and internally bypassing the moisturizing medium if aerosolized medication is introduced into the stream includes a housing having a ventilator-side port coupled to an outlet of a ventilator and a source of aerosolized medication. The housing has a patient-side port for coupling to a patient to provide ventilation including either air or air carrying aerosolized medication. A first path conducts air from the ventilator-side port through the moisturizing medium and the patient-side port, and a second path conducts air carrying aerosolized medication from the ventilator-side port directly to the patient-side port. A two-way valve mechanism in the housing selectively couples the ventilator-side port into fluid communication with one or the other of the first and second paths.
    Type: Grant
    Filed: February 1, 2008
    Date of Patent: April 12, 2011
    Assignee: Thayer Medical Corporation
    Inventors: Gregory S. Marler, David T. Sladek
  • Patent number: 7900626
    Abstract: The present invention relates to a method and a system for controlling breathing of a patient. A system for controlling breathing of a patient includes a respiratory conduit. The respiratory conduit is configured to be coupled to a patient interface device and is further configured to be coupled to a pressurized air generating device. The respiratory conduit includes at least two air flow control devices, positioned between the patient interface device and the pressurized air generating device. The respiratory conduit includes at least two volumes, wherein one volume is positioned between a first air flow control device and a second air flow control device and another volume is positioned between a second air flow control device and a third air flow control device.
    Type: Grant
    Filed: April 17, 2006
    Date of Patent: March 8, 2011
    Inventor: Robert W. Daly
  • Patent number: 7874292
    Abstract: The present invention relates to a device for delivering a supply of gases to a patient. The device includes a patient interface and connecting member. The connecting member is preferably a L-shaped swivelled connector that is capable of being fixed into one of two positions, a first position where the connector is freely rotatable within the patient interface, and a second position where an interference between the interface and connector prevents the free rotation of the connector within the patient interface. The present invention further relates to a connector that has outlet means, which includes at least one outlet vent and a funnel, which in use directs and passes a substantial portion gases expired from the patient through the outlet vent or vents.
    Type: Grant
    Filed: August 12, 2004
    Date of Patent: January 25, 2011
    Assignee: Fisher & Paykel Healthcare Limited
    Inventors: Nicholas Charles Alan Smith, Alastair Edwin McAuley, Chris Earl Nightingale, Ivan Milivojevic, Lewis George Gradon
  • Patent number: 7849857
    Abstract: Tracheal ventilation device, particularly a tracheal tube, which seals the trachea in a substantially air-tight manner. The device includes a cuff that blocks the trachea below the glottis and is traversed by a ventilation cannula. The cuff is larger in its filled, freely displaceable, unrestricted state than in its filled state positioned in the trachea. The cuff is of a flexible soft film material and lies against the trachea by means of its folds. The device is adapted to the morphology of a child's larynx and is available in finely graded sizes.
    Type: Grant
    Filed: May 6, 2004
    Date of Patent: December 14, 2010
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventor: Fred Göbel
  • Patent number: 7669600
    Abstract: A cleaning apparatus including an elongate tubular member utilized by extending into an endotracheal tube. A cleaning assembly provided at a distal end of the elongate tubular member radially expands to engage the interior wall of the endotracheal tube, for cleaning thereof by an irregular configuration on an exterior surface, achieving an effective cleaning engagement. A fluid impervious bladder portion provides an effective seal preventing fluid seepage during cleaning withdrawal. Further, a ventilator coupling connects to the endotracheal tube, a first inlet port couples to a ventilator assembly to supply air to a patient, and a second inlet port receives the elongate tubular member there through into the endotracheal tube. Also, a bypass coupling assembly connects between the channel of the elongate tubular member and the ventilator assembly directing air into the channel of the elongate tubular member and out the distal end upon occlusion of airflow.
    Type: Grant
    Filed: December 5, 2005
    Date of Patent: March 2, 2010
    Inventor: Orlando Morejon
  • Patent number: 7591267
    Abstract: A breathing circuit for use with a ventilated patient that includes a heat exchanger for removing water vapor from the breathing gases to prevent condensation within the breathing circuit. The heat exchanger is positioned downstream from the CO2 absorber and receives the breathing gases from the CO2 absorber prior to delivery of the breathing gases to the inspiration limb of the patient circuit. The heat exchanger includes a plurality of inflow tubes and outflow tubes that are each open to a sump removably attached to the heat exchanger. The sump collects the water vapor condensed from the breathing gases within the heat exchanger.
    Type: Grant
    Filed: September 6, 2005
    Date of Patent: September 22, 2009
    Assignee: General Electric Company
    Inventors: James N. Mashak, Scott A. Inman, Denise L. Pernetti, Robert Q. Tham
  • Patent number: 7500483
    Abstract: This invention is a neonatal airway adapter (10) with a sliding internal passage (54), which virtually eliminates void volumes (112) within the bore (76) of the airways, such that mixing of the exhales pages with void gases is reduced, and the waveform of the breath is maintained without undue distortion. Furthermore, the virtual elimination of void volumes reduces the level of re-breathing. The neonatal airway adapter connects to endotracheal tube adapters is such a way as to nullify the effect of the differing internal diameters (20) and internal lengths which are used in ET adapters currently available. The cross section of the internal bore of the airway through which the breath flows from the ET adapter to the connector of the ventilator is maintained almost constant, especially in the region of the gas sampling point (66), to ensure that reasonable conditions of laminar flow, and accurate sampling are maintained.
    Type: Grant
    Filed: May 9, 2005
    Date of Patent: March 10, 2009
    Assignee: Oridion Medical (1987) Ltd.
    Inventors: Lewis Colman, Gershon Levitsky
  • Patent number: 7481222
    Abstract: A device for ventilation, comprising a ventilator for providing a stream of gas for ventilation at an outlet, a hose for inspiration air one end of which is connected to the outlet, a double-lumen endotracheal tube one lumen of which, at its end distal to the patient, is connected to the other end of the hose for inspiration air, flow meters for measuring the streams of gas in the two lumina of the endotracheal tube, pressometers for measuring the pressures at the ends distal to the patient of the two lumina, an evaluation means for determining the flow resistance in a lumen flowed through by gas because of the stream of gas measured therein and the pressures measured, and a means for outputting an information about the flow resistance of the lumina.
    Type: Grant
    Filed: May 8, 2002
    Date of Patent: January 27, 2009
    Inventor: Hajo Reissmann
  • Patent number: 7418965
    Abstract: A multilumen unilimb breathing circuit with a detachable proximal fitting for providing respiratory gases to and receiving expiratory gases from a patient. The circuit has unique fittings for connection to patient devices or assisted ventilation systems and components. Despite many teachings away in the prior art from making breathing circuit tubing detachable from the proximal terminal, the proximal end of the rigid multilumen proximal fitting can be attached and detached by a user at a site of use to a mating multilumen proximal terminal while its distal end can be attached to multiple lumens formed of flexible tubing for carrying gases to and from a patient. The present invention introduces for the first time to the multilumen unilimb circuit art a detachable proximal fitting.
    Type: Grant
    Filed: July 16, 2004
    Date of Patent: September 2, 2008
    Assignee: Medlis Corp.
    Inventors: Atsuo F. Fukunaga, Blanca M. Fukunaga
  • Patent number: 7347203
    Abstract: A heat and moisture exchanger for both conducting a stream of air produced by a ventilator to a moisturizing medium and internally bypassing the moisturizing medium if aerosolized medication is introduced into the stream includes a housing having a ventilator-side port coupled to an outlet of a ventilator and a source of aerosolized medication. The housing has a patient-side port for coupling to a patient to provide ventilation including either air or air carrying aerosolized medication. A first path conducts air from the ventilator-side port through the moisturizing medium and the patient-side port, and a second path conducts air carrying aerosolized medication from the ventilator-side port directly to the patient-side port. A two-way valve mechanism in the housing selectively couples the ventilator-side port into fluid communication with one or the other of the first and second paths.
    Type: Grant
    Filed: September 4, 2003
    Date of Patent: March 25, 2008
    Assignee: Thayer Medical Corporation
    Inventors: Gregory S. Marler, David T. Sladek
  • Patent number: 7275541
    Abstract: A breathing circuit comprising first and second conduits, wherein at least one of the conduits is a non-conventional conduit. In an embodiment, a multilumen unilimb breathing circuit has first and second conduits, wherein when the proximal ends of said first and second conduits are each connected to an inlet and outlet fitting, respectively, axial extension or contraction of the second conduit causes a corresponding axial extension or contraction of the first conduit. In an embodiment, at least one of said conduits is coiled. In another embodiment, a coiled conduit is contained within an outer flexible conduit that is axially extendable and compressible, forming a unilimb, multilumen respiratory circuit. The outer flexible conduit may be pleated to provide for non-rebounding axial extension and contraction. The multilumen respiratory circuit can provide a variable rebreathing volume.
    Type: Grant
    Filed: September 16, 2004
    Date of Patent: October 2, 2007
    Assignee: F-Concepts LLC
    Inventors: Atsuo F. Fukunaga, Alex S. Fukunaga, Blanca M. Fukunaga
  • Patent number: 7261105
    Abstract: A breathing circuit comprising first and second conduits is disclosed, wherein at least one of the conduits is a non-conventional conduit. A multilumen unilimb breathing circuit is also disclosed having first and second conduits, wherein when the proximal ends of said first and second conduits are each connected to an inlet and outlet fitting, respectively, movement of the distal end of the first conduit causes a corresponding movement of the distal end of the second conduit. In an embodiment, inner and outer flexible conduits are formed of pleated tubing that is axially extendable and compressible to form a unilimb multilumen respiratory circuit. The pleating provides for axial extension and contraction. The multilumen respiratory circuit can provide a variable rebreathing volume. In an embodiment, at least one tube in a multilumen respiratory conduit is radially collapsible and radially expandable to a maximum radius for carrying respiratory gases to and from a patient.
    Type: Grant
    Filed: February 12, 2004
    Date of Patent: August 28, 2007
    Assignee: F-Concepts LLC
    Inventors: Atsuo F. Fukunaga, Blanca M. Fukunaga, Alex S. Fukunaga
  • Patent number: 7178521
    Abstract: A unilimb breathing circuit has a proximal end coupling member, a distal end coupling member, an expiratory tube extending between the proximal and distal end coupling members, and an inspiratory tube extending between the proximal and distal end coupling members. The expiratory tube is a corrugated expiratory tube that is expandable between a fully compressed rest position, and a fully expanded rest position, and has a plurality of intermediate rest positions. At the plurality of intermediate rest positions, the expiratory tube is capable of maintaining its rest length without the exertion of an external force. The inspiratory tube is a corrugated inspiratory tube having a length that is variable between a fully compressed rest position and a fully expanded rest position, and includes a plurality of intermediate rest positions between the fully expanded rest position and the fully compressed rest position.
    Type: Grant
    Filed: March 26, 2004
    Date of Patent: February 20, 2007
    Assignee: King Systems Corporation
    Inventors: Kevin D. Burrow, Dennis Irlbeck, Thomas W. McGrail, Bart H. Burrow, Michael G. Mitchell, David L. Richards
  • Patent number: 7152597
    Abstract: An adapter couples a patient's breathing circuit to a ventilator. In the preferred embodiment, the adapter comprises an inhalation conduit having a first end for coupling the adapter to the ventilator and a second end for coupling the adapter to the patient breathing circuit; an exhalation conduit having a first end for coupling the adapter to the patient breathing circuit and a discharge conduit, the discharge conduit transversely oriented to the inhalation conduit; an exhaust port communicating with the discharge conduit for releasing breathed gas from same; a valve selectively opening and closing the discharge conduit to release gas from same; and a base comprising means for releasably coupling the adapter to the ventilator.
    Type: Grant
    Filed: September 25, 2003
    Date of Patent: December 26, 2006
    Assignee: Datex-Ohmeda, Inc.
    Inventor: Duncan P. L. Bathe
  • Patent number: 7069928
    Abstract: A first and second housing is joined together by a middle housing rotatable with respect to the first and second housing. The first and second housings have conduits passing through exterior walls and an annular ring on an inside wall together with an annular interior edge rotatably joined to first and second side rim channels of the middle housing. A heat-moisture exchanger material having an annular opening through which a tube passes is mounted within the middle housing so that in a first rotatable position air and moisture passes through the first and second housing conduits directly and in a second rotatable position must pass through the heat-moisture exchange material.
    Type: Grant
    Filed: March 4, 2005
    Date of Patent: July 4, 2006
    Inventors: James V. Waldo, Jr., Christopher D. Warner
  • Patent number: 6948493
    Abstract: An apparatus for delivering anaesthetic to human or animal patients. The apparatus is an anaesthetic machine which is arranged to mount components of an anaesthetic delivery circuit, and which includes a collector arrangement in the form of a manifold having a plurality of inlets and outlets. The manifold enables a reduction in the number of tubes connecting the various components in an anaesthetic system, which are normally required in prior art anaesthetic machines. The manifold also includes an arrangement which provides a Venturi effect on gas flow, and enables a pressure gauge to be mounted out of a patient breathing circuit. The machine is preferably portable.
    Type: Grant
    Filed: December 15, 2000
    Date of Patent: September 27, 2005
    Inventor: Colin Dunlop
  • Patent number: 6918391
    Abstract: A multi lumen endotracheal tube having a balloon cuff to seal a patient's trachea during intubation. The ET tube having a main lumen for the exchange of respiratory and medicinal gases consequent to a medical procedure, a secondary lumen for inflation of the balloon cuff, and a tertiary lumen for transmission of sound waves via air medium contained therein, permitting ausculatory monitoring of a patient's breath sounds during intubation and subsequent monitoring of cardiac and respiratory activity after sealing of the ET tube. The ET tube is particularly a adapted for utilization by an anesthetist by including temperature sensor to permit remote monitoring of body core temperature and body cavity ausculation of cardiac and respiratory activity.
    Type: Grant
    Filed: May 20, 2002
    Date of Patent: July 19, 2005
    Inventor: Johnny V. Moore
  • Patent number: 6874500
    Abstract: A breathing circuit comprising first and second conduits, wherein at least one of the conduits is a non-conventional conduit. In an embodiment, a multilumen unilimb breathing circuit has first and second conduits, wherein when the proximal ends of said first and second conduits are each connected to an inlet and outlet fitting, respectively, movement of the distal end of the first conduit causes a corresponding movement of the distal end of the second conduit. In an embodiment, at least one of said conduits is coiled. In another embodiment, a coiled conduit is contained within an outer flexible conduit that is axially extendable and compressible, forming a unilimb multilumen respiratory circuit. The outer flexible conduit may be pleated to provide for non-rebounding axial extension and contraction. The multilumen respiratory circuit can provide a variable rebreathing volume.
    Type: Grant
    Filed: September 24, 2002
    Date of Patent: April 5, 2005
    Inventors: Atsuo F. Fukunaga, Alex S. Fukunaga, Blanca M. Fukunaga
  • Patent number: 6807964
    Abstract: A cold weather breathing device and method. Exhaled air warmed by the lungs of a user is flowed into contact with a heat exchange medium to heat the heat exchange medium. The heat exchange medium is positioned in a hollow body adjacent the chest and under cold weather outer clothing of the user. Upon inhaling, cold outside air is contacted with the heat exchange medium so that the inhaled air is heated by the heat exchange medium.
    Type: Grant
    Filed: January 5, 2004
    Date of Patent: October 26, 2004
    Inventor: Michael A. Ruddy
  • Publication number: 20040194781
    Abstract: A breathing circuit comprising first and second conduits is disclosed, wherein at least one of the conduits is a non-conventional conduit. A multilumen unilimb breathing circuit is also disclosed having first and second conduits, wherein when the proximal ends of said first and second conduits are each connected to an inlet and outlet fitting, respectively, movement of the distal end of the first conduit causes a corresponding movement of the distal end of the second conduit. In an embodiment, inner and outer flexible conduits are formed of pleated tubing that is axially extendable and compressible to form a unilimb multilumen respiratory circuit. The pleating provides for axial extension and contraction. The multilumen respiratory circuit can provide a variable rebreathing volume. In an embodiment, at least one tube in a multilumen respiratory conduit is radially collapsible and radially expandable to a maximum radius for carrying respiratory gases to and from a patient.
    Type: Application
    Filed: February 12, 2004
    Publication date: October 7, 2004
    Inventors: Atsuo F. Fukunaga, Blanca M. Fukunaga, Alex S. Fukunaga
  • Patent number: 6779522
    Abstract: A method of making thin-walled permeable tubing using air blown extrusion, and of using the tubing in a device which enables a substantial humidification or drying of patient breathing gases in the breathing lines for patient monitoring or anesthesia results in cost savings and increased efficiency.
    Type: Grant
    Filed: October 16, 2001
    Date of Patent: August 24, 2004
    Assignee: Perma Pure, Inc.
    Inventors: T. Paul Smith, David A. Leighty, Charles E. Dubois, Erik M. Anhorn
  • Publication number: 20040065335
    Abstract: The invention relates to a respiratory gas hose system for supplying a respiratory gas, particularly for use in the framework of CPAP therapy. The respiratory gas hose system comprises a flexible hose line (16). According to the invention, a flexible sheathing body (1) is provided which surrounds the flexible hose line (16) and extends along said flexible hose line (16). This results in considerably improving therapy comfort.
    Type: Application
    Filed: April 17, 2003
    Publication date: April 8, 2004
    Inventors: Petra Kressierer Huber, Bernd Lang, Achim Biener, Dieter Heidmann
  • Publication number: 20040045549
    Abstract: A conduit for a breathing circuit includes a heater associated, at least in part, with a portion of hydrophilic material. The purpose of the heater is to evaporate any condensed liquid collecting in the conduit, which is first sucked up by the hydrophilic material. The heated wick reduces the risk of collected water being passed to the patient and causing choking fits or discomfit. It is preferred that the heated wick lies freely in the conduit to settle at low points in the conduit where condensation may collect.
    Type: Application
    Filed: August 27, 2003
    Publication date: March 11, 2004
    Inventors: Daniel John Smith, David Peter Baldwin
  • Patent number: 6581593
    Abstract: An oxygen connector system for coupling an oxygen source to an oxygen tube comprises a source of oxygen. The source has an output orifice through which source oxygen is adapted to pass. The orifice has an inner bore and an outer surface. A flexible cylindrical elastomeric tube has a first input end and a second output end. The first input end is adapted to make a flush abutment with the source at the orifice. A generally cylindrical rigid connector has an exterior surface with a first region and a second region. An intermediate tapered region is provided between the first and second regions. The connector has a central generally cylindrical bore extending through the first and second ends forming an interior surface. The second end has a diameter slightly greater than that of the tube. A pair of stoppers are provided adjacent to the input end of the tube.
    Type: Grant
    Filed: April 3, 2001
    Date of Patent: June 24, 2003
    Inventors: Darren A. Rubin, Howard Rubin
  • Patent number: 6564799
    Abstract: A multilumen filter device has a housing with first and second filter chambers, each chamber in fluid communication with a separate distal and proximal fluid path. The filter device may be used to provide respiratory gases to and receive expiratory gases from a patient connected to a unilimb respiratory circuit. The filter device may also serve as a connector for respiratory circuit components, and have fasteners or blocking devices at either or both of its distal and proximal ends.
    Type: Grant
    Filed: March 28, 2001
    Date of Patent: May 20, 2003
    Assignee: Medlis Corp.
    Inventors: Atsuo F. Fukunaga, Blanca M. Fukunaga
  • Publication number: 20030075176
    Abstract: A breathing circuit comprising first and second conduits is disclosed, wherein at least one of the conduits is a non-conventional conduit. A multilumen unilimb breathing circuit is also disclosed having first and second conduits, wherein when the proximal ends of said first and second conduits are each connected to an inlet and outlet fitting, respectively, movement of the distal end of the first conduit causes a corresponding movement of the distal end of the second conduit. In an embodiment, at least one of said conduits is coiled. In another embodiment, a coiled conduit is contained within an outer flexible conduit that is axially extendable and compressible, forming a unilimb multilumen respiratory circuit. The outer flexible conduit may be pleated to provide for axial extension and contraction. The multilumen respiratory circuit can provide a variable rebreathing volume.
    Type: Application
    Filed: September 24, 2002
    Publication date: April 24, 2003
    Inventors: Atsuo F. Fukunaga, Alex S. Fukunaga, Blanca M. Fukunaga
  • Publication number: 20030051731
    Abstract: An inexuflator including a patient interface unit, a source of negative fluid pressure, a source of positive fluid pressure, and a manual valve connected to the source of positive fluid pressure and the source of negative fluid pressure, the valve being adapted to selectively connect the patient interface unit with the source of positive fluid pressure and the source of negative fluid pressure.
    Type: Application
    Filed: October 15, 2001
    Publication date: March 20, 2003
    Inventors: Eliezer Be'eri, Eliyahu Raphael Malka, Yisrael Shuchman
  • Patent number: 6520183
    Abstract: A double endobronchial catheter that is suited for one lung isolation anesthesia and surgery that has an outer sheath that is adapted to be introduced into the patient such that the distal end of the sheath is positioned within the patient and the proximal end remains exterior of the patient. A pair of catheters are slidingly retained in separate lumens within the outer sheath lumen. Each of the catheters has an inflatable balloon at the distal end thereof with the proximal ends extending outwardly from the proximal end of the outer sheath. A stylet is removably positioned within each of the catheters so that each catheter can be manipulated independently of the other catheter within the confines of the outer sheath so that the distal ends of the catheters can be positioned at a site within the bronchi of the patient and, upon inflation of the balloons, one of the patient's lungs can be isolated and ventilation and anesthesia administered to the other lung.
    Type: Grant
    Filed: June 11, 2001
    Date of Patent: February 18, 2003
    Assignee: Memorial Sloan-Kettering Cancer Center
    Inventor: David Amar
  • Patent number: 6439231
    Abstract: A method for providing assisted ventilation which avoids hypoxia and hypocapnia in which a predetermined dead space in an assisted ventilation system is provided external to the patient. The method may also be used to create normocapnia or moderate hypercapnia without causing hypoxia during assisted ventilation. Improved assisted ventilation devices, including an improved proximal terminal, improved tubular attachments and improved coaxial filters, are disclosed which are safer and less expensive to use than corresponding prior art unilimb assisted ventilation devices. Connector fittings and adapters to provide connector fittings on assisted ventilation devices are disclosed which provide positive indication of attachment of assisted ventilation devices and resist detachment of assisted ventilation devices. The devices of the present invention also reduce medical waste in comparison to prior art assisted ventilation devices.
    Type: Grant
    Filed: May 28, 1999
    Date of Patent: August 27, 2002
    Assignee: Medlis Corp.
    Inventors: Atsuo F. Fukunaga, Blanca M. Fukunaga
  • Patent number: 6427692
    Abstract: A valve, particularly suited for use with a patient ventilation system to regulate respiration gas flow to and from the lungs of a patient has a substantially parallel, co-axial, arrangement of inner and outer fluid flow passages for conducting gas through the valve to and from a common flow conduit connected to the patient's lungs, each passage having gas flowing therein in a different direction. A cuff is provided which is inflatable to control the flow of fluid through the valve. The cuff is disposed so as to be able to form a fluid-tight seal against one or other of the facing surfaces of the inner and the outer flow passages when inflated, and to block flow through the outer passage in a timed relationship with the breathing cycle of the patient.
    Type: Grant
    Filed: July 16, 1999
    Date of Patent: August 6, 2002
    Assignee: Siemens Elema AB
    Inventor: Kasper Höglund
  • Patent number: 6397842
    Abstract: A catheter mount incorporates a filter pleated along its length in zig-zag fashion. Opposite edges of the filter are sealed between identical upper and lower parts of a housing between teeth extending along opposite sides.
    Type: Grant
    Filed: May 17, 1999
    Date of Patent: June 4, 2002
    Assignee: Smiths Group Public Limited Company
    Inventor: Andrew James Lee
  • Publication number: 20020022808
    Abstract: This invention relates to a feeding apparatus for breathing masks that allows food and drink intake when the mask is in use, does not reduce the wearer's field of vision, requires little space, and is protected from dirt or other contamination.
    Type: Application
    Filed: March 5, 2001
    Publication date: February 21, 2002
    Applicant: Auergesellschaft GmbH
    Inventors: Michael Horn, Klaus-Dieter Dahrendorf
  • Publication number: 20020017302
    Abstract: A multilumen unilimb conduit for providing respiratory gases to and receiving expiratory gases from a patient connected to a unilimb respiratory circuit. The conduit has unique fittings for connection to patient devices or assisted ventilation systems and components. In a preferred embodiment, the conduit has fasteners or blocking devices at either or both of its distal and proximal ends.
    Type: Application
    Filed: August 15, 2001
    Publication date: February 14, 2002
    Inventors: Atsuo F. Fukunaga, Blanca M. Fukunaga
  • Publication number: 20020002976
    Abstract: A conduit for a breathing circuit includes a heater associated, at least in part, with a portion of hydrophilic material. The purpose of the heater is to evaporate any condensed liquid collecting in the conduit, which is first sucked up by the hydrophilic material. The heated wick reduces the risk of collected water being passed to the patient and causing choking fits or discomfit. It is preferred that the heated wick lies freely in the conduit to settle at low-points in the conduit where condensation may collect.
    Type: Application
    Filed: June 21, 2001
    Publication date: January 10, 2002
    Inventors: Daniel John Smith, David Peter Baldwin
  • Patent number: 6237596
    Abstract: A disposable mask and suction catheter includes a mask having a front side and a back side, the back side being disposed in contact with a user's face during use. The disposable mask and suction catheter also includes a catheter tube having a first and a second end, the first end being removably attachable to a suction source for removing exhaled air and the second end being attached to the back side of the mask. The disposable mask and suction catheter helps to prevent fogging of glasses or other eyewear due to moist, exhaled air that escapes from behind the mask, and improves user comfort by constantly removing the warm, moist air behind and around the mask and drawing cool dry air into the mask.
    Type: Grant
    Filed: December 11, 1997
    Date of Patent: May 29, 2001
    Inventor: George L. Bohmfalk
  • Patent number: 6155986
    Abstract: Apparatus for monitoring oro-nasal respiration. A pair of nasal prongs, suitable for insertion into the lower portion of the nares, join together via a small plenum chamber to form a single tube conveying the nasal pressure towards an electrical pressure transducer. Another prong is held in proximity with the patient's mouth. A baffle element extends downwards from a location above the open end of the prong to redirect a portion of oral airflow. The oral tube extends towards the electrical pressure transducers and conjoins with the nasal tube at a junction to form a common tube connected to the pressure transducer. The relative lengths and/or diameters of the nasal tube and the oral tube are arranged so that the respective pneumatic impedances are different, so that the contributions of respiratory airflow from each of said tubes are substantially equal.
    Type: Grant
    Filed: July 21, 1998
    Date of Patent: December 5, 2000
    Assignee: ResMed Limited
    Inventors: John William Ernest Brydon, Patrick Michael Piccione
  • Patent number: 6125847
    Abstract: An anesthetic applicator with a temperature/moisture regulating capability is provided. The anesthetic applicator includes: means for supplying anesthetic; an inner duct, connected to the anesthetic supplying means, for conducting the anesthetic to the patient; means for recycling the exhaled breath from the patent so that the recycled anesthetic can be resupplied via the inner duct to the patient; an outer duct sleeving the inner duct in such a manner that a passage is formed between the outer duct and the inner duct; and means for supplying a stream of heated fluid such as heated air or water to flow through the passage between the outer duct and the inner duct.
    Type: Grant
    Filed: October 22, 1997
    Date of Patent: October 3, 2000
    Inventor: Chung-Yuan Lin
  • Patent number: 6098617
    Abstract: A device adapted for use with a conventional oral or nasopharyngeal airway for delivering an inhalant gas to a proximal end of said airway, and for sampling exhalant gas at a distal end of said airway, comprises a pair of conduits which are adapted to slide into an internal passage of the airway to provide an inhalant gas at the proximal end therof and/or to sample expired gas at the distal end thereof when the airway is being used.
    Type: Grant
    Filed: May 12, 1998
    Date of Patent: August 8, 2000
    Inventor: Donald G. Connell
  • Patent number: 6003511
    Abstract: A method for providing assisted ventilation which avoids hypoxia and hypocapnia is disclosed, in which a predetermined dead space in an assisted ventilation system is provided external to the patient. The method may also be used to create normocapnia or moderate hypercapnia without causing hypoxia during assisted ventilation. Preferably, hypoxia can be avoided while inducing and/or maintaining the arterial carbon dioxide tension between about 35 and 95 mmHg. Dead space volumes as small as 10 ml and exceeding 150 ml are utilized in the method. An improved proximal terminal, tubular attachments, and coaxial filter are disclosed, which are safer the less expensive to use than prior art unilimb assisted ventilation systems; the devices of the present invention also reduce medical wastes in comparison to prior art assisted ventilation systems.
    Type: Grant
    Filed: July 15, 1998
    Date of Patent: December 21, 1999
    Assignee: Medlis Corp.
    Inventors: Atsuo F. Fukunaga, Blanca M. Fukunaga
  • Patent number: 5983896
    Abstract: A method for providing assisted ventilation which avoids hypoxia and hypocapnia is disclosed, in which a predetermined dead space in an assisted ventilation system is provided external to the patient. The method may also be used to create normocapnia or moderate hypercapnia without causing hypoxia during assisted ventilation. Preferably, hypoxia can be avoided while inducing and/or maintaining the arterial carbon dioxide tension between about 35 and 95 mmHg. Dead space volumes as small as 10 ml and exceeding 150 ml are utilized in the method. An improved proximal terminal, tubular attachments, and coaxial filter are disclosed, which are safer and less expensive to use than prior art unilimb assisted ventilation systems; the devices of the present invention also reduce medical wastes in comparison to prior art assisted ventilation systems.
    Type: Grant
    Filed: February 4, 1998
    Date of Patent: November 16, 1999
    Assignee: Medlis Corporation
    Inventors: Atsuo F. Fukunaga, Blanca M. Fukunaga
  • Patent number: 5983891
    Abstract: A method for providing assisted ventilation which avoids hypoxia and hypocapnia is disclosed, in which a predetermined dead space in an assisted ventilation system is provided external to the patient. The method may also be used to create normocapnia or moderate hypercapnia without causing hypoxia during assisted ventilation. Preferably, hypoxia can be avoided while inducing and/or maintaining the arterial carbon dioxide tension between about 35 and 95 mmHg. Dead space volumes as small as 10 ml and exceeding 150 ml are utilized in the method. An improved proximal terminal, tubular attachments, and coaxial filter are disclosed, which are safer and less expensive to use than prior art unilimb assisted ventilation systems; the devices of the present invention also reduce medical wastes in comparison to prior art assisted ventilation systems.
    Type: Grant
    Filed: July 15, 1998
    Date of Patent: November 16, 1999
    Assignee: Medlis Corp.
    Inventor: Atsuo F. Fukunaga
  • Patent number: 5983894
    Abstract: A method for providing assisted ventilation which avoids hypoxia and hypocapnia is disclosed, in which a predetermined dead space in an assisted ventilation system is provided external to the patient. The method may also be used to create normocapnia or moderate hypercapnia without causing hypoxia during assisted ventilation. Preferably, hypoxia can be avoided while inducing and/or maintaining the arterial carbon dioxide tension between about 35 and 95 mmHg. Dead space volumes as small as 10 ml and exceeding 150 ml are utilized in the method. An improved proximal terminal, tubular attachments, and coaxial filter are disclosed, which are safer and less expensive to use than prior art unilimb assisted ventilation systems; the devices of the present invention also reduce medical wastes in comparison to prior art assisted ventilation systems.
    Type: Grant
    Filed: July 15, 1998
    Date of Patent: November 16, 1999
    Assignee: Medlis Corporation
    Inventors: Atsuo F. Fukunaga, Blanca M. Fukunaga
  • Patent number: 5983895
    Abstract: A tracheostomy tube assembly comprises an outer tracheostomy tube and an inner cannula of a flexible material preformed to the shape of the outer tube and smooth on its inside and outside. The outer tube is straight at its patient end and has a short straight machine end with a coupling. The patient and machine ends are separated by a curved intermediate region divided along its length into two sub-regions. The first sub-region closer the machine end has a small radius of curvature; the other sub-region closer to the patient end has a radius of curvature at least three times that of the first sub-region. This shape enables the patient end of the assembly to be aligned with the patient's trachea.
    Type: Grant
    Filed: October 2, 1996
    Date of Patent: November 16, 1999
    Assignee: Smiths Industries PLC
    Inventor: Mark William Turner