Patent US3995643A successfully refreshed from Google Patents.
US3995643A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intratracheal tube
Assignee: Individual
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Filing: 1975-01-13
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Granted: 1976-12-07
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Expires: 1995-01-13
Abstract
Abstract A device for intubation of the tracheal passage comprising a tube through which gas can be administered and an occlusion means to seal the annular space around the tube when it is positioned in a tracheal passage. The occlusion means is formed as a canopy of flexible material having a top part traversed by said tube in an air-tight junction with an inflatable annular chamber extending around the wall of the canopy. Inflation of this chamber distends the canopy against the tracheal wall and simultaneously creates a second annular chamber between the inner surface of the canopy and the outer surface of the tube. The bottom of the canopy is open during positive pressure ventilation, for allowing an upward flow of gas via the annular space into said second chamber to inflate and distend the canopy against the tracheal wall independently of inflation of said first annular chamber.
Inventors
- 👤 Abraham D. Merav
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:43
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/04; A61M16/0434; A61M16/0445; A61M16/0447; A61M16/045; A61M16/0452; A61M16/0454; A61M16/0456
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
299 words
A device for intubation of a tracheal passage and operable with an external source of fluid with a gas flow outward through said passage from the lungs to the atmosphere, the device comprising a tube having a diameter less than that of a normal tracheal passage, and having a distal end for insertion into said tracheal passage and an opposite proximal end, and a canopy of flexible material which is both distendible to a generally annular shape for sealing the space between the tube and the passage and also is collapsible, the canopy having a top part including therein an aperture traversed by said tube, the aperture defining a top edge secured to the outer surface of said tube in an air-tight seal at a first axial position thereon, and also having a body part extending from said top edge and terminating in a free distal edge, said body part further including inflatable first chamber means for distending said canopy to a generally annular shape which, when distended, defines a dome opening toward the distal end, and within said dome a second generally annular chamber, with said distal edge of the canopy being radially spaced from the tube and having diameter greater than the outer diameter of the tube adjacent thereto and thus defining an open distal end of said canopy, said device further comprising inflation means for communicating said source of fluid to said first chamber means for inflating same and thereby distending said canopy, into said dome shape, said canopy also being distendible by said gas flow entering the canopy via said distal end thereof and filling said second chamber, which thereby distends said canopy into said dome shape, said first and second chambers being inflatable both jointly, and independently of each other, for distending said canopy.
Claim 2
Independent Claim
299 words
A device for intubation of a tracheal passage and operable with an external source of fluid with a gas flow outward through said passage from the lungs to the atmosphere, the device comprising a tube having a diameter less than that of a normal tracheal passage, and having a distal end for insertion into said tracheal passage and an opposite proximal end, and a canopy of flexible material which is both distendible to a generally annular shape for sealing the space between the tube and the passage and also is collapsible, the canopy having a top part including therein an aperture traversed by said tube, the aperture defining a top edge secured to the outer surface of said tube in an air-tight seal at a first axial position thereon, and also having a body part extending from said top edge and terminating in a free distal edge, said body part further including inflatable first chamber means for distending said canopy to a generally annular shape which, when distended, defines a dome opening toward the distal end, and within said dome a second generally annular chamber, with said distal edge of the canopy being radially spaced from the tube and having diameter greater than the outer diameter of the tube adjacent thereto and thus defining an open distal end of said canopy, said device further comprising inflation means for communicating said source of fluid to said first chamber means for inflating same and thereby distending said canopy, into said dome shape, said canopy also being distendible by said gas flow entering the canopy via said distal end thereof and filling said second chamber, which thereby distends said canopy into said dome shape, said first and second chambers being inflatable both jointly, and independently of each other, for distending said canopy.
Claim 3
Dependent Claim
15 words
A device according to claim 1 wherein said first chamber means comprises a single pocket.
Claim 4
Dependent Claim
60 words
A device according to claim 2 further comprising restraining means of generally fixed maximum length interconnecting said distal edge and said tube at a second position on the tube axially distal of said first position, for restraining said distal edge from axial movement toward the proximal end and away from said second position, any distance greater than said fixed length.
Claim 5
Dependent Claim
17 words
A device according to claim 2 wherein said tube, canopy, first and second chambers are generally coaxial.
Claim 6
Dependent Claim
38 words
A device according to claim 2 wherein said first chamber is a portion of said canopy body part comprising at least two layers of said flexible material, which layers become spaced apart when said first chamber is inflated.
Claim 7
Dependent Claim
62 words
A device according to claim 5 wherein said canopy has a proximal part extending from said top edge part-way toward said distal edge, a distal part extending from said distal edge partway toward said proximal edge, and a medial part intermediate said proximal and distal parts, and said first chamber coincides with at least one of said proximal, medial, and distal parts.
Claim 8
Dependent Claim
22 words
A device according to claim 6 wherein said first chamber coincides with said proximal part and forms the dome of said canopy.
Claim 9
Dependent Claim
16 words
A device according to claim 1 wherein said first chamber means comprises a plurality of pockets.
Claim 10
Dependent Claim
35 words
A device according to claim 1 wherein said inflation means comprises a second tube that has a first end communicating with said first chamber and a second end connectible to said external source of fluid.
Claim 11
Dependent Claim
38 words
A device according to claim 9 wherein said external source of fluid comprises a container with a pre-measured quantity of said fluid therein, which is sufficient to inflate said first chamber, when it is conducted to said chamber.
Claim 12
Dependent Claim
17 words
A device according to claim 1 wherein said distal edge is always distal to said top edge.
Claim 13
Dependent Claim
32 words
A device according to claim 1 wherein said first chamber comprises flexible material forming an inflatable annular ring generally coaxial with said tube and secured to said body part of the canopy.
Claim 14
Dependent Claim
18 words
A device according to claim 3 wherein said restraining means comprises a plurality of strands spaced apart circumferentially.
Claim 15
Dependent Claim
22 words
A device according to claim 5 wherein said first chamber in cross-section when inflated, has axial length substantially greater than radial width.
Claim 16
Dependent Claim
23 words
A device according to claim 5 wherein said first chamber in cross-section when inflated has axial length substantially less than said radial width.
Claim 17
Dependent Claim
17 words
A device according to claim 3 wherein said canopy and first and second chambers are generally symmetrical.
Claim 18
Independent Claim
298 words
A device for intubation of a tracheal passage and operable with an external source of fluid and with a gas flow outward through said passage from the lungs to the atmosphere, the device comprising a tube having a diameter less than that of a normal tracheal passage, and having a distal end for insertion into said tracheal passage and an opposite proximal end, and a canopy of flexible material which is both distendible to a generally annular shape for sealing the space between the tube and the passage and also is collapsible, the canopy having a top part including therein an aperture traversed by said tube, the aperture defining a top edge secured to the outer surface of said tube in an air-tight seal at a first axial position thereon, and also having a body part extending from said top edge and terminating in a distal edge secured to said tube at a second position axially distal from said first position, said body further including inflatable first chamber means for distending said canopy to a generally annular shape which, when distended, defines a dome opening toward said distal end, and within said dome a second generally annular chamber, said body part including at least one aperture near said distal end providing an opening in the bottom of said canopy, said device further comprising inflation means for communicating said source of fluid to said first chamber means for inflating same and thereby distending said canopy, into said dome shape, said canopy also being distendible by said gas flow entering said opening in the bottom of the canopy and filling said second chamber, which thereby distends said canopy into said dome shape, said first and second chambers being inflatable both jointly, and independently of each other, for distending said canopy.
Claim 19
Independent Claim
298 words
A device for intubation of a tracheal passage and operable with an external source of fluid and with a gas flow outward through said passage from the lungs to the atmosphere, the device comprising a tube having a diameter less than that of a normal tracheal passage, and having a distal end for insertion into said tracheal passage and an opposite proximal end, and a canopy of flexible material which is both distendible to a generally annular shape for sealing the space between the tube and the passage and also is collapsible, the canopy having a top part including therein an aperture traversed by said tube, the aperture defining a top edge secured to the outer surface of said tube in an air-tight seal at a first axial position thereon, and also having a body part extending from said top edge and terminating in a distal edge secured to said tube at a second position axially distal from said first position, said body further including inflatable first chamber means for distending said canopy to a generally annular shape which, when distended, defines a dome opening toward said distal end, and within said dome a second generally annular chamber, said body part including at least one aperture near said distal end providing an opening in the bottom of said canopy, said device further comprising inflation means for communicating said source of fluid to said first chamber means for inflating same and thereby distending said canopy, into said dome shape, said canopy also being distendible by said gas flow entering said opening in the bottom of the canopy and filling said second chamber, which thereby distends said canopy into said dome shape, said first and second chambers being inflatable both jointly, and independently of each other, for distending said canopy.
Claim 20
Independent Claim
339 words
A device for intubation of a tracheal passage and operable with an external source of fluid and with a gas flow outward through said passage from the lungs to the atmosphere, the device comprising a tube having a diameter less than that of a normal tracheal passage, and having a distal end for insertion into said tracheal passage and an opposite proximal end, a canopy of flexible material which is both distendible to a generally annular shape for sealing the space between the tube and the passage and also collapsible, the canopy having a top part including therein an aperture traversed by said tube, the aperture defining a top edge secured to the outer surface of said tube in an air-tight seal at a first axial position thereon, said canopy further comprising a body part extending from said top edge and terminating in a free distal edge, the canopy when distended defining a dome and within said dome a generally annular-shaped inner chamber, with said distal edge of the canopy being radially spaced from the tube and having diameter greater than the outer diameter of the tube adjacent thereto and thus defining an annular, open bottom end of said canopy, said canopy being distendible by said outward gas flow in the direction of distal toward proximal, which enters said open bottom end and fills said inner chamber, the body part of said canopy further including an outer generally annular chamber which is inflatable for distending said canopy, inflation means for communicating said source of fluid to said outer chamber for inflating same and thereby distending said canopy, and flexible restraining means of generally fixed maximum length interconnecting said distal edge and said tube at a second position on the tube axially distal of said first position for restraining said distal edge from axial movement toward the proximal end and away from said second position, any distance greater than said fixed length, said inner and outer chambers being inflatable both jointly, and independently of each other, for distending said canopy.
Claim 21
Independent Claim
339 words
A device for intubation of a tracheal passage and operable with an external source of fluid and with a gas flow outward through said passage from the lungs to the atmosphere, the device comprising a tube having a diameter less than that of a normal tracheal passage, and having a distal end for insertion into said tracheal passage and an opposite proximal end, a canopy of flexible material which is both distendible to a generally annular shape for sealing the space between the tube and the passage and also collapsible, the canopy having a top part including therein an aperture traversed by said tube, the aperture defining a top edge secured to the outer surface of said tube in an air-tight seal at a first axial position thereon, said canopy further comprising a body part extending from said top edge and terminating in a free distal edge, the canopy when distended defining a dome and within said dome a generally annular-shaped inner chamber, with said distal edge of the canopy being radially spaced from the tube and having diameter greater than the outer diameter of the tube adjacent thereto and thus defining an annular, open bottom end of said canopy, said canopy being distendible by said outward gas flow in the direction of distal toward proximal, which enters said open bottom end and fills said inner chamber, the body part of said canopy further including an outer generally annular chamber which is inflatable for distending said canopy, inflation means for communicating said source of fluid to said outer chamber for inflating same and thereby distending said canopy, and flexible restraining means of generally fixed maximum length interconnecting said distal edge and said tube at a second position on the tube axially distal of said first position for restraining said distal edge from axial movement toward the proximal end and away from said second position, any distance greater than said fixed length, said inner and outer chambers being inflatable both jointly, and independently of each other, for distending said canopy.
Claim 22
Dependent Claim
21 words
A device according to claim 17 wherein said distal edge is secured in an air-tight seal at said second axial position.
Claim 23
Dependent Claim
55 words
A device according to claim 1 wherein said first chamber means comprises first and second walls, which form at least one inflatable pocket means defining a generally annular shape, said walls having distal parts joined together in an air-tight seal, and proximal parts spaced apart and each joined to said tube in an air-tight seal.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-12-07 | 1980-06-07 | 1980-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-12-07 | 1984-06-07 | 1984-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-12-07 | 1988-06-07 | 1988-12-07 | $7700.00 | Window Closed / Lapsed |