Source: http://www.google.com/patents/US6123071?dq=6317900
Timestamp: 2016-10-22 07:48:28
Document Index: 701814863

Matched Legal Cases: ['art 452033', 'art 302142', 'art 231700', 'art 616329', 'art 616324', 'art 73510', 'art 73510', 'art 572004', 'art 572011', 'art 190', 'art 702020', 'art 73510', 'art 302180']

Patent US6123071 - Facial masks for assisted respiration or CPAP - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inPatentsA combination mouth and nasal mask (40) for assisted respiration or CPAP is disclosed. The combination mask (40) has a frame (42) to the rear side of which is mounted a separate nasal cushion (44) and mouth cushion (46). Both the nasal cushion (44) and the mouth cushion (46) separately form a rolled...http://www.google.com/patents/US6123071?utm_source=gb-gplus-sharePatent US6123071 - Facial masks for assisted respiration or CPAPAdvanced Patent SearchTry the new Google Patents, with machine-classified Google Scholar results, and Japanese and South Korean patents.Publication numberUS6123071 APublication typeGrantApplication numberUS 08/720,288Publication dateSep 26, 2000Filing dateSep 26, 1996Priority dateJun 18, 1993Fee statusPaidAlso published asDE69425613D1, DE69425613T2, EP0634186A2, EP0634186A3, EP0634186B1, US5560354Publication number08720288, 720288, US 6123071 A, US 6123071A, US-A-6123071, US6123071 A, US6123071AInventorsMichael Berthon-Jones, Michel Calluaud, Christopher Edward Lynch, Kenneth Frederick HelyOriginal AssigneeResmed LimitedExport CitationBiBTeX, EndNote, RefManPatent Citations (199), Non-Patent Citations (25), Referenced by (175), Classifications (10), Legal Events (4) External Links: USPTO, USPTO Assignment, EspacenetFacial masks for assisted respiration or CPAP
US 6123071 AAbstract
A combination mouth and nasal mask (40) for assisted respiration or CPAP is disclosed.
1. A combination mouth and nose mask for use in ventilation or CPAP treatment of a patient's nose and mouth, the mask comprising a separate nasal cushion and mouth cushion, the nasal cushion shaped to form a rolled edge seal circumscribing a region surrounding a patient's nose, the mouth cushion shaped to form a rolled edge seal circumscribing a region surrounding a patient's lips, the nasal cushion defining a nasal air supply chamber and the mouth cushion defining a mouth air supply chamber, the said nasal and mouth air supply chambers being commonly in fluid communication, and further in fluid communication with an inlet supply of pressurized air or gas, and expiration means, and wherein the mask is operable to supply pressurized air or gas for inspiration by the inlet to the said nasal and mouth chambers, and the expiration means provides for expiration by a route of either the mouth chamber in fluid communication with the nasal chamber, or by both chambers directly.
TECHNICAL FIELD AND DISCUSSION OF THE PRIOR ART
The delivery of pressurised air or gas to the respiratory system of a patient is a requirement in several widely accepted medical treatments. These treatments include continuous positive airway pressure (CPAP) for people suffering from obstructive sleep apnea (OSA) and other breathing disorders during sleep, and for ventilation for people with various neuromuscular disorders that impede breathing. CPAP is also used in the treatment of lung disorders and in intensive care hospital use.
In view of the foregoing considerations, the present invention discloses a mask for use in mouth ventilation or CPAP, the mask comprising a curved body portion to which is connected an inlet pipe for the supply of pressurised air or gas, a shaped mouth-surrounding cushion extending from the body portion and defining therewithin a chamber in fluid communication with the inlet pipe, and expiration means in fluid communication with the chamber, the body portion and the cushion thereof, in combination, being shaped to form a rolled edge seal circumscribing a region around the lips of a patient.
The mouth mask shown in FIGS. 1a and 1b is generally represented by the numeral 10. FIG. 1a is a front view of the mask 10, and FIG. 1b is a side view of the mask showing the operational relationship with the mouth of a patient to whom ventilation or CPAP is being administered.
In use of the mouth mask 10, air or gas under pressure is supplied to the inlet pipe 14, typically by a motor driven pump unit (not shown) and so passes to the mouth of the patient, providing the requisite positive airway pressure. The cushion 20 provides an airtight seal by virtue of the continuous rolled edge formed around the vicinity of the patient's lips. Internal air pressure acting normally on the rolled edge seal 28 against the patient's face counteracts the competing deleterious effect of this same internal pressure tending to force air out under the membrane around the inside edge of the orifice 26. This enables an airtight seal to be comfortably maintained at moderately high pressures, as may be applied in CPAP treatment or during ventilation (up to, say, 50 cm H2 O).
All of the masks previously described can be utilised in CPAP apparatus, which, as a system, comprises a motor driven pump unit that is controllable to provide a flow of air at a pressure above atmospheric (e.g. in the range of about 4 to 16 cm H2 O) via a flexible conduit or tube to the mask.
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