US4944310A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for treating snoring sickness
Assignee: Resmed Pty Ltd
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Filing: 1988-12-29
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Granted: 1990-07-31
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Expires: 2008-12-29
Abstract
Abstract A device which may be used in the treatment of snoring sickness. An air blower supplies high volume air at slightly greater than atmospheric pressure to a flexible tube (2). Such air is communicated via tube (2) through nose piece (3), further through flexible tube (4) and a restrictive air outlet device (9). Communicating with nose piece (3) is a face mask (5) adapted to be sealingly attached to a patient's nose and providing communication between the patient's nostrils and the interior of nose piece (3). By varying the restriction of device (9) the air pressure at the region of nose piece (3) and also the patient's nostrils can be varied.
Inventors
- 👤 Colin E. Sullivan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:27
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/06; A61M16/0605; A61M16/0633; A61M16/0683; A61F; A61F5/00; A61F5/56; A61M16/0057; A61M16/0066; A61M16/0666; A61M2205/00; A61M2205/42; A61M2230/00; A61M2230/18; A61M2230/60
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
220 words
Apparatus for maintaining continuous positive airway pressure, said apparatus comprising a nose piece shaped to fit over the nose of a user and defining a first chamber; a large bore inlet tube entering into a second chamber attached to said nose piece and in fluid communication with said first chamber only via at least one orifice interconnecting said chambers, said second chamber having a large bore exit to the atmosphere including continually open resistance means to provide a resistance to the flow of gases through said exit and being located adjacent to said exit; and means to releasably seal said nose piece against the facial skin of said user adjacent to said nose to effect a pressure tight seal of said first chamber; said inlet tube connected to a high volume supply of air to cause a high volume of air to flow through said inlet tube, into said second chamber and out said resistance means, said resistance means causing the pressure within said second chamber to be elevated above, and maintained above, atmospheric pressure, said at least one orifice transmitting said elevated pressure to said first chamber, and the flow of air passing between said second chamber and said first chamber through said orifice being substantially equal to the air inhaled and exhaled by said user via the nose.
Claim 2
Dependent Claim
220 words
Apparatus for maintaining continuous positive airway pressure, said apparatus comprising a nose piece shaped to fit over the nose of a user and defining a first chamber; a large bore inlet tube entering into a second chamber attached to said nose piece and in fluid communication with said first chamber only via at least one orifice interconnecting said chambers, said second chamber having a large bore exit to the atmosphere including continually open resistance means to provide a resistance to the flow of gases through said exit and being located adjacent to said exit; and means to releasably seal said nose piece against the facial skin of said user adjacent to said nose to effect a pressure tight seal of said first chamber; said inlet tube connected to a high volume supply of air to cause a high volume of air to flow through said inlet tube, into said second chamber and out said resistance means, said resistance means causing the pressure within said second chamber to be elevated above, and maintained above, atmospheric pressure, said at least one orifice transmitting said elevated pressure to said first chamber, and the flow of air passing between said second chamber and said first chamber through said orifice being substantially equal to the air inhaled and exhaled by said user via the nose.
Claim 3
Dependent Claim
20 words
Apparatus as claimed in claim 1 wherein said resistance means is located at a location spaced from said second chamber.
Claim 4
Dependent Claim
22 words
Apparatus as claimed in claim 1 wherein said exit opens into a length of large bore tube separate from said inlet tube.
Claim 5
Dependent Claim
22 words
Apparatus as claimed in claim 1 wherein said resistance means comprises an aperture of reduced size relative to said large bore exit.
Claim 6
Dependent Claim
33 words
Apparatus as claimed in claim 1 wherein said resistance means is variable and said inlet, second chamber and exit are dimensioned to receive a high volume flow of approximately 4 liters per second.
Claim 7
Dependent Claim
40 words
Apparatus as claimed in claim 1 wherein said resistance means is dimensioned to raise the pressure within said first and second chambers to a pressure above atmospheric pressure within the range of from 4 centimeters to 15 centimeters water gauge.
Claim 8
Dependent Claim
27 words
Apparatus as claimed in claim 1 wherein said at least one orifice is located in said first chamber at a location opposite the nostrils of said nose.
Claim 9
Dependent Claim
17 words
Apparatus as claimed in claim 7 wherein said at least one orifice comprises a pair of orifices.
Claim 10
Dependent Claim
26 words
Apparatus as claimed in claim 1 wherein said second chamber is substantially cylindrical having an internal diameter substantially equal to the bore of said inlet tube.
Claim 11
Dependent Claim
21 words
Apparatus as claimed in claim 1 wherein said inlet tube and exit are located at opposite sides of said second chamber.
Claim 12
Dependent Claim
25 words
Apparatus as claimed in claim 1 wherein a pump means is connected to the large bore inlet tube and supplies a high volume of air.
Claim 13
Dependent Claim
225 words
Apparatus for maintaining continuous positive airway pressure, said apparatus comprising a nose piece shaped to fit over the nose of a user and defining a first chamber; a large bore inlet tube entering into a second chamber attached to said nose piece and in fluid communication with said first chamber only via at least one orifice interconnecting said chambers, said second chamber having a large bore exit to the atmosphere including continually over resistance means to provide a resistance to the flow of gases through said exit and being located adjacent to said exit; and means to releasably seal said nose piece against the facial skin of said user adjacent to said nose to effect a pressure tight seal of said first chamber; a pump connected to said inlet tube to supply a high volume of air flow through said inlet tube, into said second chamber, and out of said second chamber and to atmosphere by way of said resistance means, said resistance means causing the pressure within said second chamber to be elevated above, and maintained above, atmospheric pressure, said at least one orifice transmitting said elevated pressure to said first chamber, and the flow of air passing between said second chamber and said first chamber through said orifice being substantially equal to the air inhaled and exhaled by said user via the nose.
Claim 14
Dependent Claim
225 words
Apparatus for maintaining continuous positive airway pressure, said apparatus comprising a nose piece shaped to fit over the nose of a user and defining a first chamber; a large bore inlet tube entering into a second chamber attached to said nose piece and in fluid communication with said first chamber only via at least one orifice interconnecting said chambers, said second chamber having a large bore exit to the atmosphere including continually over resistance means to provide a resistance to the flow of gases through said exit and being located adjacent to said exit; and means to releasably seal said nose piece against the facial skin of said user adjacent to said nose to effect a pressure tight seal of said first chamber; a pump connected to said inlet tube to supply a high volume of air flow through said inlet tube, into said second chamber, and out of said second chamber and to atmosphere by way of said resistance means, said resistance means causing the pressure within said second chamber to be elevated above, and maintained above, atmospheric pressure, said at least one orifice transmitting said elevated pressure to said first chamber, and the flow of air passing between said second chamber and said first chamber through said orifice being substantially equal to the air inhaled and exhaled by said user via the nose.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-07-30 | 1994-01-29 | 1994-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-07-30 | 1998-01-29 | 1998-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-07-30 | 2002-01-29 | 2002-07-31 | $7700.00 | Window Closed / Lapsed |