US3794072A - Oxygen diluter device - Google Patents
Oxygen diluter device Download PDFInfo
- Publication number
- US3794072A US3794072A US00266226A US3794072DA US3794072A US 3794072 A US3794072 A US 3794072A US 00266226 A US00266226 A US 00266226A US 3794072D A US3794072D A US 3794072DA US 3794072 A US3794072 A US 3794072A
- Authority
- US
- United States
- Prior art keywords
- oxygen
- ports
- closure members
- nozzle
- delivered
- Prior art date
- 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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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES 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
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/06—Respiratory or anaesthetic masks
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES 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
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/10—Preparation of respiratory gases or vapours
- A61M16/12—Preparation of respiratory gases or vapours by mixing different gases
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES 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
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/10—Preparation of respiratory gases or vapours
- A61M16/12—Preparation of respiratory gases or vapours by mixing different gases
- A61M16/122—Preparation of respiratory gases or vapours by mixing different gases with dilution
- A61M16/125—Diluting primary gas with ambient air
- A61M16/127—Diluting primary gas with ambient air by Venturi effect, i.e. entrainment mixers
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES 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
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/06—Respiratory or anaesthetic masks
- A61M16/0683—Holding devices therefor
-
- Y—GENERAL 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/87571—Multiple inlet with single outlet
- Y10T137/87587—Combining by aspiration
- Y10T137/87619—With selectively operated flow control means in inlet
- Y10T137/87627—Flow control means is located in aspirated fluid inlet
Definitions
- An improved device for controlling oxygen concentration delivered to an oxygen mask comprises a nozzle portion disposed at one end for attaching an oxygen delivery tube, a hollow gas delivery portion at the opposite end for directing gas to an oxygen mask and a tunnel portion disposed between the nozzle and gas delivery portion having support bars extending between the nozzle and delivery portions and a plurality of spaced arcuate ribs secured along the bars between which ribs are defined a plurality of air entrainment ports through which atmospheric air is drawn for diluting a stream of oxygen passing along the tunnel.
- Air restriction closure members are secured between the ribs selectively closing one or more of the ports for metering air entrainment and oxygen concentration delivered to the mask.
- FIGURE 5 FIGURE 6 4
- FIGURE 7 FiGURE 9 PAIENTEDFEBZWH $194,072
- the device incorporates an improved dilution chamber which can be altered to give the full range of usual oxygen concentrations required for most patients.
- the device intended to be used in combination with an oxygen mask includes a nozzle portion for securing an oxygen delivery tube. Extending from one end of the nozzle, opposite the end for attaching the oxygen delivery tube, is a gas metering tunnel portion comprising a plurality of spaced arcuate ribs between which ribs are defined a plurality of dilution ports.
- the ribs are attached to and suspended between a pair of oppositely disposed bars or rods which bars are attached between the nozzle portion and a hollow gas delivery portion the latter which directs the diluted oxygen to an oxygen mask.
- the device also includes a plurality of closure members for selectively closing one or more of the air entrainment ports as desired for varying the amount of entrained atmospheric air entering the mixing chamber and concomitantly the oxygen concentration delivered to the patient.
- the closure members may be inserted or removed as desired so that the varying oxygen concentrations may be achieved with a single device without the requirement of utilizing separate diluter devices to achieve differing oxygen concentrations as has been necessitated by prior art devices known heretofore.
- FIG. 1 is an enlarged perspective view of the device of the invention
- FIG. 2 is a top plan view of the device shown in FIG.
- FIG. 3 is a front elevational view of the device of FIG.
- FIG. 4 is a front elevational view of closure members
- FIG. 5 is a side sectional view of the device
- FIG. 6 is a side elevational view of the device showing a first closure member inserted
- FIG. 7 is a side elevational view of the device showing first and second closure members inserted
- FIG. 8 is a side elevational view of the device showing all three closure members inserted
- FIG. 9 is a front elevational view with all closure members inserted.
- FIG. 10 is a perspective view illustrating the device as normally used in combination with an oxygen mask and tubing.
- FIG. ll there is shown an oxygen dilution device Ill? of the invention having a forward end nozzle portion 12 and a rearwardly disposed gas delivery portion 22. Intermediate between these two portions is a gas metering tunnel portion 26 through which an oxygen stream flows from the nozzle portion to the gas delivery portion.
- gas metering tunnel portion 26 is defined between rods 19 and 20, which are disposed on each side of the tunnel portion, and between arcuate ribs 14, 16 and 18. Each of the arcuate ribs extend circumferentially around tunnel portion 26 and are secured to both rods 19 and 20. It will be noted that the ribs are substantially parallel and lie substantially normal to the central axis of tunnel portion 26 and along which axis gas flowing between nozzle portion 12 and gas delivery portion 22 travels. Between adjacent ribs and rib 18 and the gas delivery portion are defined a plurality of ports l3, l5 and 17 through which ports atmospheric air is directed for entrainment with and dilution of oxygen flowing through tunnel portion 26.
- Hollow nozzle portion 12 provides a conduit through which oxygen is directed.
- the size or diameter of the hollow interior of the nozzle portion is not particularly critical.
- the nozzle portion interior includes a restricted or relatively narrow passageway 24. Accordingly, gas flowing through the passageway 24 and entering tunnel portion 26 will be in the form of a high velocity stream the efi'ect of which stream, entering the significantly larger diameter tunnel portion 26, causes a partial vacuum.
- atmospheric gas in the immediate vicinity of the tunnel portion will be entrained through open ports l3, l5 and 17 to combine with the oxygen stream and thereby dilute its concentration. Thereafter, the diluted oxygen stream travels through hollow gas delivery portion 22 and exits through open end 28. With two or more ports open, the air entrainment effect may actually be described as a cascading venturi principle since dilution of the oxygen stream passing along the tunnel portion is carried out in successive stages from one port to the next.
- Exteriorly disposed on the forward end of nozzle portion 12 are a plurality of frustoconical segments 21 for securing an oxygen supply tube.
- the first end segment has'a smaller maximum diameter than the adjacent segment so that the segments have maximum diameters increasing from forward to rear and provide an adaptor for attaching oxygen tubing of varying sizes.
- such features are not critical and are merely for convenience.
- Hollow gas delivery portion 22 is preferably annular so that the circumferential exterior thereof may be easily fitted into a circular receiving orifice of an oxygen mask or large bore tubing end for delivery of oxygen.
- a flange 25 is preferably located around the outer gas delivery portion surface to act as as a stop for limiting the extent to which the device extends within tubing or mask opening or orifice.
- Other equivalent means may be used for that purpose.
- the exterior shape as well as the hollow interior of gas delivery portion 22 is not particularly critical so long as it can be received and secured with an oxygen mask or tubing to form a substantially gas tight seal at the receiving orifice as will be appreciated by those skilled in the art.
- a plurality of air restricting closure members 32, 34 and 36 are used for closing gas entrainment ports 13, and 17 (FIG. 2) in order to achieve varying oxygen concentrations as required.
- the closure members are preferably in the shape of a disc corresponding to the arcuately shaped ribs 14, 16 and 18 but which discs have a larger or greater outside diameter so that they may be relatively easily grasped by an operator for removal or insertion along tunnel portion 26.
- the center area of each of the discs is also hollow and preferably does not interfere or project into the interior of tunnel portion 26 to avoid deflection of the air stream passing therealong.
- the disc centers are also preferably axially aligned along the central axis extending through tunnel portion 26.
- the air restriction discs also are each provided with a slot 38a, 38b and 380 through which one of the rods 19 or 20 is guided and the other rod received in securing the discs.
- Notches 41a, 41b and 41c are also present in which one of the rods is received in further stabilizing secured discs.
- disc 32 not only has a larger hollow center than discs 34 or 36 but that the latter discs are respectively thinner.
- the thickness of each disc corresponds to the width of the ports in which the respective disc fits and preferably all are different so that each disc will fit only one port.
- the port sizes distance between adjacent ribs
- the width of rods 19 and 20 between adjacent ribs as well as corresponding disc slot and notch sizes may vary.
- the device may have a different shape as may the closure members.
- ribs and rods fonning a generally frustoconical outline ribs may be formed with similar modification of the closure member shape in rectangular, square, or other forms.
- the discs may be color coded to further distinguish them. Such modifications will be evident to those skilled in the art without departing from the purview of the invention.
- the device In operation, the device is utilized and functions as follows:
- oxygen supply tubing 44 is secured to nozzle portion 12 and gas delivery portion 22 is inserted and received in the end of oxygen delivery tube 46.
- the delivery tubing is connected to oxygen mask 45 which is secured to a patient as shown.
- the device may be secured directly to an oxygen mask thereby eliminating delivery tubing if desired.
- the operator or therapist selects the desired oxygen concentration to be delivered to the patient, for example, 24 percent, 28 percent, 35 percent or 40 percent. Where 24 percent oxygen is to be delivered to the patient, none of the discs are inserted on the device so that all three of gas entraining ports 13, 15 and 17 are open as shown in FIGS. 1, 2 and 5.
- the air entrained through the ports provide an oxygenatmospheric air mixture of about 24 percent oxygen concentration delivered to the patient.
- disc 32 is inserted as shown in FIG. 6 closing appropriate oxygen entraining port.
- an oxygen concentration of 28 percent delivered to the patient will be achieved.
- two of the restriction discs are secured as shown in FIG. 7 and in order to increase total flow to the patient, oxygen flow is increased, for example, to eight liters per minute.
- a third disc inserted to close all of the air entraining ports as shown in FIG. 8, 40 percent oxygen concentration will be delivered to a patient.
- disc 36 has an oblong hollow center so that there is a vent opening 35 adjacent nozzle portion 12.
- vent opening 35 adjacent nozzle portion 12.
- the size of such a vent opening may be varied to achieve any maximum oxygen concentration desired.
- the shape of the ribs of the device of the invention is not particularly critical and rather than being arcuate, they may be rectangular, square or some other shape, so long as the air entraining tunnel portion is not adversely affected.
- the port sizes and shapes may be varied as well as the number of ports incorporated in such a device to achieve a series of different oxygen concentrations as will be appreciated by those skilled in the art.
- the closure members are shown as slotted and notched so that they may be easily fitted over and secured on the rods which extend between the forward-most rib and the forward end of gas delivery portion 22, other design characteristics which achieve the same purpose are' intended to be within the purview of the invention.
- the device of the invention provides varying oxygen concentrations on a single unit without the requirement of having different devices for each different oxygen concentration desired as have the corresponding prior art devices. Accordingly, a single device of the invention can be used on a single patient whereby varying oxygen concentrations may be selected by simply inserting or removing one or more of the closure members when the unit is to be used as previusly described.
- a device for diluting an oxygen stream delivered to a patient comprising:
- a nozzle portion disposed at one end for attaching an oxygen supply tube
- a hollow tunnel portion extending between the nozzle and gas delivery portions including a pair of oppositely disposed rods extending between said nozzle and gas delivery portions and a plurality of arcuate and parallel ribs secured around both sides of said rods and spaced therealong whereby a tunnel is defined interiorly of said ribs and rods and a plurality of ports are defined between said ribs;
- each port for being selectively secured on said device to close at least a portion of a respective port whereby an oxygen stream flowing through the tunnel portion is mixed and diluted with entrained air entering through one or more open ports.
- closure members comprise air restriction discs each of which is shaped to substantially occlude one of said ports.
Abstract
Description
Claims (4)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US26622672A | 1972-06-26 | 1972-06-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3794072A true US3794072A (en) | 1974-02-26 |
Family
ID=23013699
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00266226A Expired - Lifetime US3794072A (en) | 1972-06-26 | 1972-06-26 | Oxygen diluter device |
Country Status (1)
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US (1) | US3794072A (en) |
Cited By (36)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3906996A (en) * | 1973-09-24 | 1975-09-23 | Depass Dennis | Breathing therapy aid |
US3977432A (en) * | 1975-01-13 | 1976-08-31 | American Hospital Supply Corporation | Breathing mask and variable concentration oxygen diluting device therefor |
US4041935A (en) * | 1974-03-07 | 1977-08-16 | Vitalograph (Ireland) Limited | Device for breathing measurement |
WO1992002269A1 (en) * | 1990-07-27 | 1992-02-20 | Alfery David D | Cpap device for surgery utilizing one-lung anesthesia |
US5144945A (en) * | 1989-04-20 | 1992-09-08 | Nippon Sanso Kabushiki Kaisha | Portable oxygen-enriching air inhaler |
US5605148A (en) * | 1994-07-05 | 1997-02-25 | Pneupac Limited | Gas mixing devices for resuscitation/lung ventilation apparatus |
US5690097A (en) * | 1996-05-31 | 1997-11-25 | Board Of Regents, The University Of Texas System | Combination anesthetic mask and oxygen transport system |
US6668828B1 (en) | 2000-10-16 | 2003-12-30 | Pulmonox Technologies Corporations | System and elements for managing therapeutic gas administration to a spontaneously breathing non-ventilated patient |
US6718979B1 (en) * | 2000-06-05 | 2004-04-13 | Dhd Healthcare Corporation | Oxygen mask assembly |
US20080135044A1 (en) * | 2003-06-18 | 2008-06-12 | Breathe Technologies | Methods and devices for minimally invasive respiratory support |
US20080190421A1 (en) * | 2007-02-12 | 2008-08-14 | Darryl Zitting | Venturi apparatus with incorporated flow metering device |
US20080216838A1 (en) * | 2003-08-18 | 2008-09-11 | Menlo Lifesciences, Llc | Method and device for non-invasive ventilation with nasal interface |
US20090151719A1 (en) * | 2004-02-04 | 2009-06-18 | Breathe Technologies, Inc. | Methods and devices for treating sleep apnea |
US20090156953A1 (en) * | 2007-05-18 | 2009-06-18 | Breathe Technologies, Inc. | Methods and devices for sensing respiration and providing ventilation therapy |
US20090183739A1 (en) * | 2008-01-18 | 2009-07-23 | Menlolife, Inc. | Methods and devices for improving efficacy of non-invasive ventilation |
US20090260625A1 (en) * | 2003-06-18 | 2009-10-22 | Breathe Technologies, Inc. | Methods, systems and devices for improving ventilation in a lung area |
US20100043786A1 (en) * | 2006-05-18 | 2010-02-25 | Breathe Technologies | Tracheostoma spacer, tracheotomy method, and device for inserting a tracheostoma spacer |
US20100071693A1 (en) * | 2008-08-22 | 2010-03-25 | Breathe Technologies | Methods and devices for providing mechanical ventilation with an open airway interface |
US20100252039A1 (en) * | 2009-04-02 | 2010-10-07 | Breathe Technologies, Inc. | Methods, systems and devices for non-invasive open ventilation with gas delivery nozzles in free space |
US20100252043A1 (en) * | 2003-08-11 | 2010-10-07 | Breathe Technologies, Inc. | Method and arrangement for respiratory support for a patient airway prosthesis and catheter |
US20100269834A1 (en) * | 2003-08-11 | 2010-10-28 | Breathe Technologies, Inc. | Systems, methods and apparatus for respiratory support of a patient |
US20110214676A1 (en) * | 2009-09-03 | 2011-09-08 | Breathe Technologies, Inc. | Methods, systems and devices for non-invasive ventilation including a non-sealing ventilation interface with an entrainment port and/or pressure feature |
US20120240924A1 (en) * | 2011-03-22 | 2012-09-27 | Rustad Andre M | Delivering diluted oxygen to a patient |
US20130068221A1 (en) * | 2010-04-22 | 2013-03-21 | Omar Mian | Gas flow indicator |
US8567399B2 (en) | 2007-09-26 | 2013-10-29 | Breathe Technologies, Inc. | Methods and devices for providing inspiratory and expiratory flow relief during ventilation therapy |
US8770193B2 (en) | 2008-04-18 | 2014-07-08 | Breathe Technologies, Inc. | Methods and devices for sensing respiration and controlling ventilator functions |
US8776793B2 (en) | 2008-04-18 | 2014-07-15 | Breathe Technologies, Inc. | Methods and devices for sensing respiration and controlling ventilator functions |
US8939152B2 (en) | 2010-09-30 | 2015-01-27 | Breathe Technologies, Inc. | Methods, systems and devices for humidifying a respiratory tract |
EP2806931A4 (en) * | 2012-01-23 | 2015-10-21 | Aeon Res And Technology Llc | Modular pulmonary treatment system |
US20160243329A1 (en) * | 2015-02-18 | 2016-08-25 | Alexander C. Chen | High flow ventilation system for endoscopy procedures |
US9962512B2 (en) | 2009-04-02 | 2018-05-08 | Breathe Technologies, Inc. | Methods, systems and devices for non-invasive ventilation including a non-sealing ventilation interface with a free space nozzle feature |
US10099028B2 (en) | 2010-08-16 | 2018-10-16 | Breathe Technologies, Inc. | Methods, systems and devices using LOX to provide ventilatory support |
US10252020B2 (en) | 2008-10-01 | 2019-04-09 | Breathe Technologies, Inc. | Ventilator with biofeedback monitoring and control for improving patient activity and health |
US10792449B2 (en) | 2017-10-03 | 2020-10-06 | Breathe Technologies, Inc. | Patient interface with integrated jet pump |
US20210060281A1 (en) * | 2019-09-04 | 2021-03-04 | Vyaire Medical, Inc. | Ventilation leak component |
US11154672B2 (en) | 2009-09-03 | 2021-10-26 | Breathe Technologies, Inc. | Methods, systems and devices for non-invasive ventilation including a non-sealing ventilation interface with an entrainment port and/or pressure feature |
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Cited By (69)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3906996A (en) * | 1973-09-24 | 1975-09-23 | Depass Dennis | Breathing therapy aid |
US4041935A (en) * | 1974-03-07 | 1977-08-16 | Vitalograph (Ireland) Limited | Device for breathing measurement |
US3977432A (en) * | 1975-01-13 | 1976-08-31 | American Hospital Supply Corporation | Breathing mask and variable concentration oxygen diluting device therefor |
US5144945A (en) * | 1989-04-20 | 1992-09-08 | Nippon Sanso Kabushiki Kaisha | Portable oxygen-enriching air inhaler |
WO1992002269A1 (en) * | 1990-07-27 | 1992-02-20 | Alfery David D | Cpap device for surgery utilizing one-lung anesthesia |
US5605148A (en) * | 1994-07-05 | 1997-02-25 | Pneupac Limited | Gas mixing devices for resuscitation/lung ventilation apparatus |
US5690097A (en) * | 1996-05-31 | 1997-11-25 | Board Of Regents, The University Of Texas System | Combination anesthetic mask and oxygen transport system |
US6718979B1 (en) * | 2000-06-05 | 2004-04-13 | Dhd Healthcare Corporation | Oxygen mask assembly |
US6668828B1 (en) | 2000-10-16 | 2003-12-30 | Pulmonox Technologies Corporations | System and elements for managing therapeutic gas administration to a spontaneously breathing non-ventilated patient |
US8381729B2 (en) | 2003-06-18 | 2013-02-26 | Breathe Technologies, Inc. | Methods and devices for minimally invasive respiratory support |
US8955518B2 (en) | 2003-06-18 | 2015-02-17 | Breathe Technologies, Inc. | Methods, systems and devices for improving ventilation in a lung area |
US20090260625A1 (en) * | 2003-06-18 | 2009-10-22 | Breathe Technologies, Inc. | Methods, systems and devices for improving ventilation in a lung area |
US20080135044A1 (en) * | 2003-06-18 | 2008-06-12 | Breathe Technologies | Methods and devices for minimally invasive respiratory support |
US20110209705A1 (en) * | 2003-08-11 | 2011-09-01 | Breathe Technologies, Inc. | Tracheal catheter and prosthesis and method of respiratory support of a patient |
US20100269834A1 (en) * | 2003-08-11 | 2010-10-28 | Breathe Technologies, Inc. | Systems, methods and apparatus for respiratory support of a patient |
US20100252043A1 (en) * | 2003-08-11 | 2010-10-07 | Breathe Technologies, Inc. | Method and arrangement for respiratory support for a patient airway prosthesis and catheter |
US8418694B2 (en) | 2003-08-11 | 2013-04-16 | Breathe Technologies, Inc. | Systems, methods and apparatus for respiratory support of a patient |
US20080216838A1 (en) * | 2003-08-18 | 2008-09-11 | Menlo Lifesciences, Llc | Method and device for non-invasive ventilation with nasal interface |
US8573219B2 (en) | 2003-08-18 | 2013-11-05 | Breathe Technologies, Inc. | Method and device for non-invasive ventilation with nasal interface |
US8136527B2 (en) | 2003-08-18 | 2012-03-20 | Breathe Technologies, Inc. | Method and device for non-invasive ventilation with nasal interface |
US8925545B2 (en) | 2004-02-04 | 2015-01-06 | Breathe Technologies, Inc. | Methods and devices for treating sleep apnea |
US20090151719A1 (en) * | 2004-02-04 | 2009-06-18 | Breathe Technologies, Inc. | Methods and devices for treating sleep apnea |
US8985099B2 (en) | 2006-05-18 | 2015-03-24 | Breathe Technologies, Inc. | Tracheostoma spacer, tracheotomy method, and device for inserting a tracheostoma spacer |
US20100043786A1 (en) * | 2006-05-18 | 2010-02-25 | Breathe Technologies | Tracheostoma spacer, tracheotomy method, and device for inserting a tracheostoma spacer |
US20080190421A1 (en) * | 2007-02-12 | 2008-08-14 | Darryl Zitting | Venturi apparatus with incorporated flow metering device |
US10058668B2 (en) | 2007-05-18 | 2018-08-28 | Breathe Technologies, Inc. | Methods and devices for sensing respiration and providing ventilation therapy |
US20090156953A1 (en) * | 2007-05-18 | 2009-06-18 | Breathe Technologies, Inc. | Methods and devices for sensing respiration and providing ventilation therapy |
US8567399B2 (en) | 2007-09-26 | 2013-10-29 | Breathe Technologies, Inc. | Methods and devices for providing inspiratory and expiratory flow relief during ventilation therapy |
US20090183739A1 (en) * | 2008-01-18 | 2009-07-23 | Menlolife, Inc. | Methods and devices for improving efficacy of non-invasive ventilation |
US8776793B2 (en) | 2008-04-18 | 2014-07-15 | Breathe Technologies, Inc. | Methods and devices for sensing respiration and controlling ventilator functions |
US8770193B2 (en) | 2008-04-18 | 2014-07-08 | Breathe Technologies, Inc. | Methods and devices for sensing respiration and controlling ventilator functions |
US20100071693A1 (en) * | 2008-08-22 | 2010-03-25 | Breathe Technologies | Methods and devices for providing mechanical ventilation with an open airway interface |
US8677999B2 (en) | 2008-08-22 | 2014-03-25 | Breathe Technologies, Inc. | Methods and devices for providing mechanical ventilation with an open airway interface |
US10252020B2 (en) | 2008-10-01 | 2019-04-09 | Breathe Technologies, Inc. | Ventilator with biofeedback monitoring and control for improving patient activity and health |
US10695519B2 (en) | 2009-04-02 | 2020-06-30 | Breathe Technologies, Inc. | Methods, systems and devices for non-invasive open ventilation with gas delivery nozzles within nasal pillows |
US10709864B2 (en) | 2009-04-02 | 2020-07-14 | Breathe Technologies, Inc. | Methods, systems and devices for non-invasive open ventilation with gas delivery nozzles with an outer tube |
US20100252040A1 (en) * | 2009-04-02 | 2010-10-07 | Breathe Technologies, Inc. | Methods, systems and devices for non-invasive open ventilation with gas delivery nozzles within an outer tube |
US10046133B2 (en) | 2009-04-02 | 2018-08-14 | Breathe Technologies, Inc. | Methods, systems and devices for non-invasive open ventilation for providing ventilation support |
US9962512B2 (en) | 2009-04-02 | 2018-05-08 | Breathe Technologies, Inc. | Methods, systems and devices for non-invasive ventilation including a non-sealing ventilation interface with a free space nozzle feature |
US20100252039A1 (en) * | 2009-04-02 | 2010-10-07 | Breathe Technologies, Inc. | Methods, systems and devices for non-invasive open ventilation with gas delivery nozzles in free space |
US20100252037A1 (en) * | 2009-04-02 | 2010-10-07 | Breathe Technologies, Inc. | Methods, systems and devices for non-invasive open ventilation with gas delivery nozzles within nasal pillows |
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