US4584998A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-purpose tracheal tube
Assignee: Mallinckrodt Inc
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Filing: 1981-09-11
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Granted: 1986-04-29
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Expires: 2001-09-11
Abstract
Abstract A multi-purpose tracheal tube for use with high frequency ventilation. The tube is an endotracheal tube including up to three lumens, in addition to the primary lumen, which serve various functions to provide versatility in the treatment of patients. In cuffed tubes one of the lumens is used for inflating the cuff once the tube has been placed in the desired position in the trachea of the patient. Another lumen, referred to as the "insufflation lumen", is used to deliver oxygen or other gases by constant insufflation, intermittent jet ventilation or high frequency ventilation. The third lumen, when incorporated, is employed for monitoring and irrigation. The distal opening of the irrigation or monitoring lumen is located just inside the distal tip of the tube while the insufflation lumen opening is located rearwardly toward the proximal end of the tube relative to the irrigation or monitoring lumen opening.
Inventors
- 👤 Thomas W. McGrail
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:00
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/04; A61M16/0402; A61M16/042; A61M16/0431; A61M16/0475; A61M16/0477; A61M16/0479; A61M16/0484; A61M16/0486; A61M16/0096; A61M16/0434; A61M2205/00; A61M2205/32
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
247 words
A balloon-type catheter comprising: (a) an extruded tube formed of flexible plastic material comprising a primary lumen and first, second, and third secondary lumens each of which has a smaller diameter than the primary lumen, all of said lumens extending substantially the entire length of the tube; (b) a proximal opening in said tube cut through the exterior tube wall into communication with the first secondary lumen, an inflation tube fixed through said proximal opening to said first secondary lumen in said tube; (c) a distal opening cut through the exterior wall of the catheter adjacent the distal end into communication with said first secondary lumen; (d) an inflatable balloon fixed about the catheter adjacent its distal end enveloping said distal opening of said first secondary lumen; (e) said second secondary lumen comprising an insufflation lumen having a proximal opening through the exterior wall of the tube, a second tube fixed through said proximal opening of said secondary lumen, a distal opening displaced proximally from the distal end of the tube cut through the interior wall of the catheter into communication with said second secondary lumen; and (f) said third secondary lumen comprising an irrigation or monitoring lumen having a proximal opening through the exterior walls of the tube, a third tube fixed through said proximal opening of said third secondary lumen, a distal opening adjacent the distal end, displaced from the distal opening of the second secondary lumen, forwardly toward the distal end of the catheter.
Claim 2
Dependent Claim
247 words
A balloon-type catheter comprising: (a) an extruded tube formed of flexible plastic material comprising a primary lumen and first, second, and third secondary lumens each of which has a smaller diameter than the primary lumen, all of said lumens extending substantially the entire length of the tube; (b) a proximal opening in said tube cut through the exterior tube wall into communication with the first secondary lumen, an inflation tube fixed through said proximal opening to said first secondary lumen in said tube; (c) a distal opening cut through the exterior wall of the catheter adjacent the distal end into communication with said first secondary lumen; (d) an inflatable balloon fixed about the catheter adjacent its distal end enveloping said distal opening of said first secondary lumen; (e) said second secondary lumen comprising an insufflation lumen having a proximal opening through the exterior wall of the tube, a second tube fixed through said proximal opening of said secondary lumen, a distal opening displaced proximally from the distal end of the tube cut through the interior wall of the catheter into communication with said second secondary lumen; and (f) said third secondary lumen comprising an irrigation or monitoring lumen having a proximal opening through the exterior walls of the tube, a third tube fixed through said proximal opening of said third secondary lumen, a distal opening adjacent the distal end, displaced from the distal opening of the second secondary lumen, forwardly toward the distal end of the catheter.
Claim 3
Dependent Claim
27 words
The catheter according to claim 1 wherein the distance between the distal openings of the second and third secondary lumens is between about two and ten centimeters.
Claim 4
Dependent Claim
24 words
The catheter according to claim 2 wherein the distance between the distal openings of the second and third secondary lumens is about five centimeters.
Claim 5
Dependent Claim
203 words
A catheter comprising: (a) an extruded tube formed of flexible plastic material comprising a primary lumen and a first secondary lumen, said first secondary lumen having a smaller diameter than the primary lumen and extending substantially the entire length of the tube: (b) said first secondary lumen being an insufflation lumen and having a proximal opening through the exterior wall of the tube, a first tube fixed through said proximal opening of said first secondary lumen, a first distal opening displaced proximally from the distal end of the tube cut through the interior wall of the catheter into communication with said first secondary lumen; (c) said distal opening being located between 1 cm and 10 cm from the distal end of the tube; and (d) a second secondary lumen for irrigation or monitoring airway pressure, said second secondary lumen having a second proximal opening through the exterior wall of the tube, a second tube fixed through said second proximal opening of said second secondary lumen, a second distal opening cut through the interior wall of the tube into communication with said second secondary lumen, said second distal opening being displaced forwardly toward the distal end of the catheter from said first distal opening.
Claim 6
Dependent Claim
203 words
A catheter comprising: (a) an extruded tube formed of flexible plastic material comprising a primary lumen and a first secondary lumen, said first secondary lumen having a smaller diameter than the primary lumen and extending substantially the entire length of the tube: (b) said first secondary lumen being an insufflation lumen and having a proximal opening through the exterior wall of the tube, a first tube fixed through said proximal opening of said first secondary lumen, a first distal opening displaced proximally from the distal end of the tube cut through the interior wall of the catheter into communication with said first secondary lumen; (c) said distal opening being located between 1 cm and 10 cm from the distal end of the tube; and (d) a second secondary lumen for irrigation or monitoring airway pressure, said second secondary lumen having a second proximal opening through the exterior wall of the tube, a second tube fixed through said second proximal opening of said second secondary lumen, a second distal opening cut through the interior wall of the tube into communication with said second secondary lumen, said second distal opening being displaced forwardly toward the distal end of the catheter from said first distal opening.
Claim 7
Dependent Claim
23 words
The catheter according to claim 4 wherein the distance between said first and second distal openings is between about two and ten centimeters.
Claim 8
Dependent Claim
20 words
The catheter according to claim 4 wherein the distance between said first and second distal openings is about five centimeters.
Claim 9
Dependent Claim
164 words
A catheter comprising: (a) an extruded tube formed of flexible plastic material comprising a primary lumen and first and second secondary lumens each of which has a smaller diameter than the primary lumen, all of said lumens extending substantially the entire length of the tube; (b) said first secondary lumen comprising an insufflation lumen having a proximal opening through the exterior wall of the tube, a first tube fixed through said proximal opening of said first secondary lumen, a distal opening adjacent the distal end of the tube cut through the interior wall of the catheter into communication with said first secondary lumen; and (c) said second secondary lumen comprising an irrigation or monitoring lumen having a proximal opening through the exterior walls of the tube, a second tube fixed through said proximal opening of said second secondary lumen, a distal opening adjacent the distal end, displaced from the distal opening of the first secondary lumen, forwardly toward the distal end of the catheter.
Claim 10
Dependent Claim
164 words
A catheter comprising: (a) an extruded tube formed of flexible plastic material comprising a primary lumen and first and second secondary lumens each of which has a smaller diameter than the primary lumen, all of said lumens extending substantially the entire length of the tube; (b) said first secondary lumen comprising an insufflation lumen having a proximal opening through the exterior wall of the tube, a first tube fixed through said proximal opening of said first secondary lumen, a distal opening adjacent the distal end of the tube cut through the interior wall of the catheter into communication with said first secondary lumen; and (c) said second secondary lumen comprising an irrigation or monitoring lumen having a proximal opening through the exterior walls of the tube, a second tube fixed through said proximal opening of said second secondary lumen, a distal opening adjacent the distal end, displaced from the distal opening of the first secondary lumen, forwardly toward the distal end of the catheter.
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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) | 1989-04-28 | 1989-10-28 | 1990-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-28 | 1993-10-28 | 1994-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-28 | 1997-10-28 | 1998-04-29 | $7700.00 | Window Closed / Lapsed |