US3670726A - Breathing circuit - Google Patents

Breathing circuit Download PDF

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Publication number
US3670726A
US3670726A US3670726DA US3670726A US 3670726 A US3670726 A US 3670726A US 3670726D A US3670726D A US 3670726DA US 3670726 A US3670726 A US 3670726A
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Grant
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Prior art keywords
circuit
breathing
member
end
body
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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Inventor
Thomas J Mahon
Samuel Cherba
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PROFESSIONAL MEDICAL PRODUCTS Inc A DE CORP
General Electric Capital Corp
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Becton Dickinson and Co
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/08Bellows; Connecting tubes ; Water traps; Patient circuits
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/08Bellows; Connecting tubes ; Water traps; Patient circuits
    • A61M16/0816Joints or connectors
    • A61M16/0825Joints or connectors with ball-sockets
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/08Bellows; Connecting tubes ; Water traps; Patient circuits
    • A61M16/0816Joints or connectors
    • A61M16/0833T- or Y-type connectors, e.g. Y-piece
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S128/00Surgery
    • Y10S128/909Breathing apparatus with means for preventing patient cross-contamination

Abstract

There is disclosed a breathing circuit which includes a swivelled fitting for connection to a patient''s face mask or endotracheal tube and for connecting thereto breathing hoses which are to be connected to an anesthetic machine or to a pulmonary ventilator. The fitting is characterized in that the hoses are laterally disposed with respect to the patient''s nose. The circuit in its entirety is further characterized in that it is light in weight, is translucent and is designed for onepatient use to render it disposable.

Description

United States Patent Mahon et al.

' 1 June 20, 1972 [54] BREATHING CIRCUIT [72] Inventors: Thomas J. Mahon, Palisades Park; Samuel Cherba, Totowa, both of NJ.

[73] Assignee: Becton, Dickinson and Company, East Rutherford, NJ.

22 Filed: Sept.23,1969

211 Appl. No.: 860,319

[52] US. Cl ..128/l88, 285/278 [51] Int. Cl. ..A6lm 17/00 [58] Field oiSearch ..l28/l47,188,145.8,145 A,

{56] References Cited UNlTED STATES PATENTS 7/l936 McKesson ..128/195 9/1937 Forsberg ..285/278 2,638,096 5/1953 Waldhaus 128/208 2,860,633 11/1959 Phillips 128/188 2,989,960 6/1961 Hay ..128/188 Primary Examiner-Richard A. Gaudet Assistant ExaminerG. F. Dunne An0rney--Kane, Dalsimer, Kane, Sullivan & Kurucz [57] ABSTRACT There is disclosed a breathing circuit which includes a swivelled fitting for connection to a patient's face mask or endotracheal tube and for connecting thereto breathing hoses which are to be connected to an anesthetic machine or to a pulmonary ventilator. The fitting is characterized in that the hoses are laterally disposed with respect to thepatients nose. The circuit in its entirety is further characterized in that it is light in weight, is translucent and is designed for one-patient use to render it disposable.

5 Claims, 5 Drawing Figures PATENTEDJUNZO 1972 v INVENTOQS THOMAS J. MQHON SQMUEL. CHEF? A BREATHING CIRCUIT BACKGROUND OF THE INVENTION FIELD OF THE INVENTION SUMMARY OF INVENTION Accordingly, an object of the present invention is to provide a breathing circuit of the foregoing described type which is so economical that it is disposable.

Another object is to provide such a breathing circuit which is extremely light in weight and is constructed so that it is more comfortable to the patient.

Another object is to eliminate weight drag on tracheostomy tubes.

Another object is to minimize the dangers of kinking or accidental extubation of endotracheal tubes.

A further object is to provide such a breathing circuit which is constructed of plastic resin and is fabricated under high 7 temperature conditions.

A still further object is to provide such a breathing circuit which is translucent, thus allowing direct observation of excess or purulent secretions and also of condensate level.

Other and further objects will be obvious upon an understanding of the illustrative embodiment about to be described, or will be indicated in the appended claims and various advantages not referred to herein will occur to one skilled in the art upon employment of the invention in practice.

In accordance with the present invention, the foregoing objects are generally accomplished by providing a breathing circuit which comprises a substantially right angle tubular elbow having a first arm for connection to a patients pulmonary system and having a second arm, a hollow body member having a pair of side by side ports and having an end opening, a flexible hose connected to each of the ports, and swivel means connecting the second arm of the elbow to the end opening of the body member so that the hoses are laterally disposed with respect to the patients nose.

BRIEF DESCRIPTION OF THE DRAWING FIG. 1 is a plan view of the breathing circuit in accordance with the present invention.

FIG. 2 is a perspective view illustrating the breathing circuit applied to a patient.

FIG. 3 is an elevational view of a swiveled fitting.

FIG. 4 is a plan view of the fitting shown in FIG. 3.

FIG. 5 is a sectional view taken along the line 5-5 on FIG. 4.

DESCRIPTION OF THE PREFERRED EMBODIMENT Referring now to the drawing in detail, a breathing circuit is shown in FIG. 1 which generally comprises a swiveled fitting l0, and a pair of corrugated flexible hoses 11 and 12, each hose having one end connected to the fitting 10 with the other end to be connected to an anesthetic machine or to a pulmonary ventilator.

The fitting and the hoses are constructed of a translucent inert plastic resin preferably of polypropylene and polyethylene, respectively. These parts by being translucent allow direct observation of excess or purulent secretions and also of condensate level. When the breathing circuit is used in connection with ventilation therapy equipment, the plastic is non-conductive and, therefore, translucent. When the circuit is used in connection with inhalational anesthetic agents, the plastic is conductive of a black color, in which transluoency is lost. Preferably the conductive plastic material comprises a carbonized plastic resin which is electrically conductive, being of low and high density polyethylene. However, in cases where there is positive assurance that a flammable agent will not be used, the non-conductive circuit may be used in connection with inhalational anesthesia.

The parts are fabricated at such high temperatures that following manufacture they are sterile. During packaging they never become wet and hence any contaminant growth is inhibited. Random sampling of the packaged product has shown percent sterility, that is, negative for bacteria and fungi. However, even if there were occasional contamination this would not be serious because the greatest problem in ventilatory therapy is cross-infection with hospital acquired organisms. Since the breathing circuit in accordance with the present invention is relative inexpensive, it is discarded after one-patient use and thus contributes enormously to eradication of pulmonary cross-infection.

The fitting 10 (shown in FIGS. 3 to 5) comprises a hollow body member 14 having a closed end 15 and an opening I6 defined by a cylindrical section 17 at its opposite end and having side by side tubular sections 18 and 19 extending outwardly to provide ports for connecting the hoses 11 and 12; a tubular substantially right angle elbow 20 having an arm 21 serving as a port for connection to a patient's endotracheal tube 23 or face mask (not shown) or tracheostomy tube (not shown), that is the patient's pulmonary system, and having an arm 22; and swivel means 24 for connecting the arm 22 to the cylindrical section 17 of the body member 14.

The swivel means 24 includes an annular recess 25 on the outer surface of the cylindrical secton l7, and spaced apart inner and outer coaxial circular wall sections 26 and 27, respectively, on the arm 22 for receiving the section 17. The outer wall 27 has annular bead means 28 on its peripheral edge extending into the recess 25, functioning as a ratchet. The swivel means in this manner is constructed and arranged to enable the body member 14 to be turned 360 with respect to the elbow 20 at desired fixed positions.

In FIG. 2 the breathing circuit is shown as applied to a patient with the arm 21 of the elbow 22 connected to an endotracheal tube 23 in situ. It will be observed, that by reason of the manner in which the fitting 10 is constructed, the hose 11 and 12 are laterally disposed with respect to the patient's nose. This, coupled with the extreme light weight of the circuit, about grams, reduces worry about accidental extubation and relieves pressure on the nose and eyes, thereby avoiding such damage as corneal abrasions.

SUMMATION From the foregoing description it will be seen that the present invention provides a highly improved and practical breathing circuit both for inhalational anesthesia and ventilation.

What is claimed is:

1. An inert plastic resinous fitting for use in a breathing circuit comprising a hollow substantially tubular body member having an open cylindrical end and a closed end opposite said open end, said member having first and second ports for connection of-a-hose thereto and having an end opening in fluid flow communication with said ports, said first mentioned opening being in a cylindrical section of said body member, said ports being defined by substantially parallel and side by side tubular sections extending substantially normally outwardly from said body member, a tubular member being a substantially right angle elbow and having a port at said one end for connection to a patients face mask or endotracheal tube and having an opening at its other end in fluid flow communication with said first mentioned opening, swivel means for connecting said members at said openings said swivel means including an annular recess in the outer surface of said cylindrical section, and spaced apart inner and outer coaxial circular wall sections at the opening of said elbows for receiving said cylindrical section of said body member, said outer wall having annular spaced apart bead means on its peripheral edge extending into said recess so as to function as a ratchet, and said swivel means being constructed and arranged to enable said body member to be turned 360 with respect to said

Claims (5)

1. An inert plastic resinous fitting for use in a breathing cIrcuit comprising a hollow substantially tubular body member having an open cylindrical end and a closed end opposite said open end, said member having first and second ports for connection of a hose thereto and having an end opening in fluid flow communication with said ports, said first mentioned opening being in a cylindrical section of said body member, said ports being defined by substantially parallel and side by side tubular sections extending substantially normally outwardly from said body member, a tubular member being a substantially right angle elbow and having a port at said one end for connection to a patient''s face mask or endotracheal tube and having an opening at its other end in fluid flow communication with said first mentioned opening, swivel means for connecting said members at said openings said swivel means including an annular recess in the outer surface of said cylindrical section, and spaced apart inner and outer coaxial circular wall sections at the opening of said elbows for receiving said cylindrical section of said body member, said outer wall having annular spaced apart bead means on its peripheral edge extending into said recess so as to function as a ratchet, and said swivel means being constructed and arranged to enable said body member to be turned 360* with respect to said elbow.
2. A fitting according to claim 1, constructed of a translucent inert plastic resin.
3. A breathing circuit comprising the fitting of claim 1, a flexible hose connected to each of said ports.
4. A breathing circuit according to claim 3, wherein said elbow, said body member and said hoses are constructed of a translucent inert plastic resin.
5. A breathing circuit according to claim 3, wherein said elbow, said body member and said hoses are constructed of a carbonized plastic resin which is electrically conductive.
US3670726A 1969-09-23 1969-09-23 Breathing circuit Expired - Lifetime US3670726A (en)

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Cited By (54)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3799164A (en) * 1971-08-12 1974-03-26 Du Pont Analgesic apparatus
DE2939794A1 (en) * 1979-10-01 1981-04-16 Volker O Prof Dr Med Lang Bronchial secretion trap for medical respirator - has breathing head under plate carrying trap with suction connection and air venting
WO1981002675A1 (en) * 1980-03-27 1981-10-01 Sontek Ind Simultaneous respiration and endotracheal suctioning of critically ill patient
EP0054714A2 (en) * 1980-12-20 1982-06-30 Erich Prof. Dr. med. Rügheimer Connecting system with plug-in connectors for respiratory and anaesthetic devices
US4676241A (en) * 1984-01-16 1987-06-30 W.L.G. Technology Ventilation tube swivel
US4679827A (en) * 1984-12-28 1987-07-14 Thomas & Betts Corporation Raintight and oiltight connector for flexible conduit
US4967744A (en) * 1988-11-03 1990-11-06 Airoflex Medical, Inc. Flexible breathing circuit
US5333608A (en) * 1992-09-30 1994-08-02 Sherwood Medical Company Endotracheal tube for face, chin and neck surgery
US5431637A (en) * 1992-07-31 1995-07-11 Sherwood Medical Company Endotracheal suction catheter
JP2001079091A (en) * 1999-08-10 2001-03-27 Fisher & Paykel Ltd Mouthpiece and apparatus usable for orally supplying air
EP0979662A3 (en) * 1998-08-13 2001-09-19 FISHER & PAYKEL LIMITED System, including a mouthpiece, for delivering pressurized gases to a user
US6478026B1 (en) 1999-03-13 2002-11-12 Thomas J. Wood Nasal ventilation interface
US6484723B2 (en) * 1999-02-11 2002-11-26 Eileen Haas Tracheostomy air filtration system
US20030089371A1 (en) * 1998-08-13 2003-05-15 Fisher & Paykel Healthcare Limited Breathing assistance apparatus
US20030094177A1 (en) * 2001-11-20 2003-05-22 Smith Nicholas Charles Alan Patient interfaces
US6679257B1 (en) 1998-08-13 2004-01-20 Fisher & Paykel Limited Breathing assistance apparatus
US20040134498A1 (en) * 2001-10-25 2004-07-15 Roger Strickland Nasal cannula
US20040182397A1 (en) * 2003-03-21 2004-09-23 Innomed Technologies, Inc. Nasal interface including ventilation insert
US20050028823A1 (en) * 2000-03-13 2005-02-10 Wood Thomas J. Nasal ventilation interface
US20050028821A1 (en) * 2003-08-06 2005-02-10 Wood Thomas J. Nasal interface and system including ventilation insert
US20050039757A1 (en) * 1999-03-13 2005-02-24 Wood Thomas J. Ventilation interface for sleep apnea therapy
US20050045182A1 (en) * 2003-08-06 2005-03-03 Wood Thomas J. Nasal interface and system including ventilation insert
US20050126574A1 (en) * 2000-03-13 2005-06-16 Wood Thomas J. Ventilation interface for sleep apnea therapy
US20050133040A1 (en) * 2003-09-10 2005-06-23 Wood Thomas J. Nasal interface and system including ventilation insert
US20050235999A1 (en) * 2004-04-23 2005-10-27 Wood Thomas J Nasal ventilation interface and system
US20050236000A1 (en) * 2003-08-05 2005-10-27 Wood Thomas J Nasal ventilation interface and system
US20060124131A1 (en) * 2004-12-10 2006-06-15 Respcare, Inc. Hybrid ventilation mask with nasal interface and method for configuring such a mask
US20060237017A1 (en) * 2003-12-31 2006-10-26 Resmed Limited Compact oronasal patient interface
US20060266361A1 (en) * 2005-05-31 2006-11-30 Shara Hernandez Ventilation interface
US7191781B2 (en) 2003-08-05 2007-03-20 Innomed Technologies, Inc. Nasal ventilation interface and system
US20070221226A1 (en) * 2006-03-10 2007-09-27 Norman Hansen Ventilation mask
US20070272249A1 (en) * 2006-05-10 2007-11-29 Sanjay Chandran Ventilation interface
US20090277452A1 (en) * 2005-06-06 2009-11-12 Steven John Lubke Mask System
US20100163049A1 (en) * 2008-12-30 2010-07-01 Allegiance Corporation Respiratory mask
USD623288S1 (en) 2006-04-28 2010-09-07 Resmed Limited Patient interface
US7958893B2 (en) 2001-09-07 2011-06-14 Resmed Limited Cushion for a respiratory mask assembly
USD652909S1 (en) 2006-04-28 2012-01-24 Resmed Limited Respiratory mask frame
US8261745B2 (en) 2004-12-10 2012-09-11 Respcare, Inc. Ventilation interface
US8291906B2 (en) 2008-06-04 2012-10-23 Resmed Limited Patient interface systems
US8297285B2 (en) 2006-07-28 2012-10-30 Resmed Limited Delivery of respiratory therapy
US8485192B2 (en) 2005-01-12 2013-07-16 Resmed Limited Cushion for patient interface
US8517023B2 (en) 2007-01-30 2013-08-27 Resmed Limited Mask system with interchangeable headgear connectors
US8522784B2 (en) 2008-03-04 2013-09-03 Resmed Limited Mask system
CN103476449A (en) * 2011-04-18 2013-12-25 皇家飞利浦有限公司 Over-molded rotationally coupled assemblies
US20140062077A1 (en) * 2011-08-29 2014-03-06 Mark Hurley AC condensate drain line evacuation adapter
US8807135B2 (en) 2004-06-03 2014-08-19 Resmed Limited Cushion for a patient interface
US8869798B2 (en) 2008-09-12 2014-10-28 Resmed Limited Foam-based interfacing structure method and apparatus
US8869797B2 (en) 2007-04-19 2014-10-28 Resmed Limited Cushion and cushion to frame assembly mechanism for patient interface
US8905031B2 (en) 2008-06-04 2014-12-09 Resmed Limited Patient interface systems
US8944061B2 (en) 2005-10-14 2015-02-03 Resmed Limited Cushion to frame assembly mechanism
US9162034B2 (en) 2006-07-28 2015-10-20 Resmed Limited Delivery of respiratory therapy
US9381316B2 (en) 2005-10-25 2016-07-05 Resmed Limited Interchangeable mask assembly
US9480809B2 (en) 2007-07-30 2016-11-01 Resmed Limited Patient interface
US9987450B2 (en) 2008-03-04 2018-06-05 Resmed Limited Interface including a foam cushioning element

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US2094147A (en) * 1934-04-18 1937-09-28 Electrolux Corp Coupling for vacuum cleaners
US2638096A (en) * 1949-11-08 1953-05-12 Edith A Waldhaus Apparatus for oral anesthesia
US2860633A (en) * 1956-08-17 1958-11-18 John W Phillips Compound swivel adaptor and coupling for anesthesia
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Cited By (132)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3799164A (en) * 1971-08-12 1974-03-26 Du Pont Analgesic apparatus
DE2939794A1 (en) * 1979-10-01 1981-04-16 Volker O Prof Dr Med Lang Bronchial secretion trap for medical respirator - has breathing head under plate carrying trap with suction connection and air venting
WO1981002675A1 (en) * 1980-03-27 1981-10-01 Sontek Ind Simultaneous respiration and endotracheal suctioning of critically ill patient
US4351328A (en) * 1980-03-27 1982-09-28 Sontek Industries, Inc. Simultaneous respiration and endotracheal suctioning of a critically ill patient
EP0054714A2 (en) * 1980-12-20 1982-06-30 Erich Prof. Dr. med. Rügheimer Connecting system with plug-in connectors for respiratory and anaesthetic devices
EP0054714A3 (en) * 1980-12-20 1982-11-10 Erich Prof. Dr. Med. Rugheimer Connecting system for fluid-pipes with plug-in connectors, in particular for respiratory and anaesthetic devices
US4676241A (en) * 1984-01-16 1987-06-30 W.L.G. Technology Ventilation tube swivel
US4679827A (en) * 1984-12-28 1987-07-14 Thomas & Betts Corporation Raintight and oiltight connector for flexible conduit
US4967744A (en) * 1988-11-03 1990-11-06 Airoflex Medical, Inc. Flexible breathing circuit
US5431637A (en) * 1992-07-31 1995-07-11 Sherwood Medical Company Endotracheal suction catheter
US5333608A (en) * 1992-09-30 1994-08-02 Sherwood Medical Company Endotracheal tube for face, chin and neck surgery
US6820617B2 (en) 1998-08-13 2004-11-23 Fisher & Paykel Limited Breathing assistance apparatus
US20050056282A1 (en) * 1998-08-13 2005-03-17 Robertson Christopher John Breathing assistance apparatus
EP0979662A3 (en) * 1998-08-13 2001-09-19 FISHER & PAYKEL LIMITED System, including a mouthpiece, for delivering pressurized gases to a user
US6679257B1 (en) 1998-08-13 2004-01-20 Fisher & Paykel Limited Breathing assistance apparatus
US6997186B2 (en) 1998-08-13 2006-02-14 Fisher & Paykel Healthcare Limited Breathing assistance apparatus
US20030089371A1 (en) * 1998-08-13 2003-05-15 Fisher & Paykel Healthcare Limited Breathing assistance apparatus
US6484723B2 (en) * 1999-02-11 2002-11-26 Eileen Haas Tracheostomy air filtration system
US20050039757A1 (en) * 1999-03-13 2005-02-24 Wood Thomas J. Ventilation interface for sleep apnea therapy
US6478026B1 (en) 1999-03-13 2002-11-12 Thomas J. Wood Nasal ventilation interface
US6997177B2 (en) 1999-03-13 2006-02-14 Inno Med Technologies, Inc. Ventilation interface for sleep apnea therapy
JP2001079091A (en) * 1999-08-10 2001-03-27 Fisher & Paykel Ltd Mouthpiece and apparatus usable for orally supplying air
EP1075848A3 (en) * 1999-08-10 2001-09-12 FISHER & PAYKEL LIMITED An improved breathing assistance apparatus
US7059328B2 (en) 2000-03-13 2006-06-13 Innomed Technologies, Inc. Ventilation interface for sleep apnea therapy
US20050034730A1 (en) * 2000-03-13 2005-02-17 Wood Thomas J. Ventilation interface for sleep apnea therapy
US7188624B2 (en) 2000-03-13 2007-03-13 Innomed Technologies Inc. Ventilation interface for sleep apnea therapy
US20050028823A1 (en) * 2000-03-13 2005-02-10 Wood Thomas J. Nasal ventilation interface
US20050126574A1 (en) * 2000-03-13 2005-06-16 Wood Thomas J. Ventilation interface for sleep apnea therapy
US6994089B2 (en) 2000-03-13 2006-02-07 Innomed Technologies, Inc Nasal ventilation interface
US8733358B2 (en) 2001-09-07 2014-05-27 Resmed Limited Cushion for a respiratory mask assembly
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US7958893B2 (en) 2001-09-07 2011-06-14 Resmed Limited Cushion for a respiratory mask assembly
US20040134498A1 (en) * 2001-10-25 2004-07-15 Roger Strickland Nasal cannula
US7047974B2 (en) 2001-10-25 2006-05-23 Innomed Technologies, Inc. Nasal cannula
US8096301B2 (en) 2001-11-20 2012-01-17 Fisher & Paykel Healthcare Limited Patient interfaces
USRE41298E1 (en) * 2001-11-20 2010-05-04 Fisher & Paykel Healthcare Limited Patient interfaces
US6892729B2 (en) * 2001-11-20 2005-05-17 Fisher & Paykel Healthcare Limited Patient interfaces
US7874292B2 (en) 2001-11-20 2011-01-25 Fisher & Paykel Healthcare Limited Patient interfaces
US20100078028A1 (en) * 2001-11-20 2010-04-01 Nicholas Charles Alan Smith Patient interfaces
US20100024825A1 (en) * 2001-11-20 2010-02-04 Nicholas Charles Alan Smith Patient interfaces
US20030094177A1 (en) * 2001-11-20 2003-05-22 Smith Nicholas Charles Alan Patient interfaces
US8267091B2 (en) 2001-11-20 2012-09-18 Fisher & Paykel Healthcare Limited Patient interfaces
US20050016535A1 (en) * 2001-11-20 2005-01-27 Smith Nicholas Charles Alan Patient interfaces
US20040182397A1 (en) * 2003-03-21 2004-09-23 Innomed Technologies, Inc. Nasal interface including ventilation insert
US20050236000A1 (en) * 2003-08-05 2005-10-27 Wood Thomas J Nasal ventilation interface and system
US7191781B2 (en) 2003-08-05 2007-03-20 Innomed Technologies, Inc. Nasal ventilation interface and system
US7234465B2 (en) 2003-08-05 2007-06-26 Innomed Technologies, Inc. Nasal ventilation interface and system
US20060150982A1 (en) * 2003-08-05 2006-07-13 Wood Thomas J Nasal ventilation interface and system
US20050045182A1 (en) * 2003-08-06 2005-03-03 Wood Thomas J. Nasal interface and system including ventilation insert
US7000613B2 (en) 2003-08-06 2006-02-21 Innomed Technologies, Inc. Nasal interface and system including ventilation insert
US20050028821A1 (en) * 2003-08-06 2005-02-10 Wood Thomas J. Nasal interface and system including ventilation insert
US7472707B2 (en) 2003-08-06 2009-01-06 Innomed Technologies, Inc. Nasal interface and system including ventilation insert
US20050133040A1 (en) * 2003-09-10 2005-06-23 Wood Thomas J. Nasal interface and system including ventilation insert
US20070144525A1 (en) * 2003-12-31 2007-06-28 Resmed Limited Compact oronasal patient interface
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US20050235999A1 (en) * 2004-04-23 2005-10-27 Wood Thomas J Nasal ventilation interface and system
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US20060124131A1 (en) * 2004-12-10 2006-06-15 Respcare, Inc. Hybrid ventilation mask with nasal interface and method for configuring such a mask
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