US5231983A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for the aerosol administration of medication
Assignee: 3M Co
•
Filing: 1991-10-07
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Granted: 1993-08-03
•
Expires: 2011-10-07
Abstract
Abstract A method and apparatus for the aerosol administration of medication. The method comprises the steps of inserting an endotracheal tube into the trachea of a patient, establishing an air flow through the endotracheal tube, and injecting medication into the air flow inside the endotracheal tube in an aerosol form. The apparatus comprises an improved endotracheal tube adapted for the aerosol administration of medication, the endotracheal tube having an aerosol medication lumen, having proximal and distal ends, and extending along at least a portion of the endotracheal tube. A nozzle is located at the distal end of the lumen, inside the endotracheal tube, but adjacent its distal end. A connector is located at the proximal end of the lumen to a connect the lumen to a supply of aerosol medication, to dispense the medication in aerosol form from the nozzle in the endotracheal tube.
Inventors
- 👤 Charles J. Matson
- 👤 David J. Velasquez
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:54
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/04; A61M16/0463
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
165 words
An endotracheal tube comprising: a hollow tubular body having a proximal end, a distal end for insertion into the trachea of a patient, the hollow tubular body having a longitudinal axis extending between the proximal and distal ends, an aerosol medication lumen, having proximal and distal ends, and extending along at least a portion of the tubular body; a nozzle at the distal end of the lumen, inside the tubular body; means for connecting the proximal end of the lumen to a canister having a supply of aerosol propellant and medication therein, to dispense the medication in aerosol form from the nozzle in the endotracheal tube; an injector having opposite end portions extending generally transversely and entirely across the tubular body and generally perpendicular to the longitudinal axis of the tubular body to form a diametrical chord for the tubular body with at least one of the opposite end portions being fixed to the tubular body, and wherein the nozzle is located in the injector.
Claim 2
Dependent Claim
165 words
An endotracheal tube comprising: a hollow tubular body having a proximal end, a distal end for insertion into the trachea of a patient, the hollow tubular body having a longitudinal axis extending between the proximal and distal ends, an aerosol medication lumen, having proximal and distal ends, and extending along at least a portion of the tubular body; a nozzle at the distal end of the lumen, inside the tubular body; means for connecting the proximal end of the lumen to a canister having a supply of aerosol propellant and medication therein, to dispense the medication in aerosol form from the nozzle in the endotracheal tube; an injector having opposite end portions extending generally transversely and entirely across the tubular body and generally perpendicular to the longitudinal axis of the tubular body to form a diametrical chord for the tubular body with at least one of the opposite end portions being fixed to the tubular body, and wherein the nozzle is located in the injector.
Claim 3
Dependent Claim
20 words
The endotracheal tube according to claim 1 wherein the nozzle is located adjacent the distal end of the tubular body.
Claim 4
Dependent Claim
26 words
The endotracheal tube according to claim 1 wherein the nozzle is located in the injector at a position generally at the center of the tubular body.
Claim 5
Dependent Claim
24 words
The endotracheal tube according to claim 3 wherein the nozzle is oriented to face generally outwardly toward the distal end of the tubular body.
Claim 6
Dependent Claim
34 words
An endotracheal tube according to claim 1 wherein the aerosol medication lumen extends along at least a portion of the tubular body generally in the direction of the longitudinal axis of the tubular body.
Claim 7
Dependent Claim
176 words
In combination, a metered dose inhaler (MDI) having aerosol propellant and medication therein and having a valve including a valve volume; and an endotracheal tube comprising a hollow tubular body having a proximal end, a distal end for insertion into the trachea of a patient, the hollow tubular body defining a longitudinal axis extending between the proximal and distal ends, an aerosol medication lumen having a lumen diameter and length and having proximal and distal ends, an injector having a nozzle at the distal end of the lumen, inside the tubular body and adjacent the distal end of the tubular body; the nozzle having an orifice diameter, the injector extending transversely and entirely across the tubular body in a direction that is generally perpendicular to the longitudinal axis, and means for connecting the proximal end of the lumen to the metered dose inhaler (MDI); and wherein the valve volume, orifice diameter, lumen diameter and lumen length are selected to dispense a respirable mass of the medication in aerosol form from the nozzle in the endotracheal tube.
Claim 8
Dependent Claim
176 words
In combination, a metered dose inhaler (MDI) having aerosol propellant and medication therein and having a valve including a valve volume; and an endotracheal tube comprising a hollow tubular body having a proximal end, a distal end for insertion into the trachea of a patient, the hollow tubular body defining a longitudinal axis extending between the proximal and distal ends, an aerosol medication lumen having a lumen diameter and length and having proximal and distal ends, an injector having a nozzle at the distal end of the lumen, inside the tubular body and adjacent the distal end of the tubular body; the nozzle having an orifice diameter, the injector extending transversely and entirely across the tubular body in a direction that is generally perpendicular to the longitudinal axis, and means for connecting the proximal end of the lumen to the metered dose inhaler (MDI); and wherein the valve volume, orifice diameter, lumen diameter and lumen length are selected to dispense a respirable mass of the medication in aerosol form from the nozzle in the endotracheal tube.
Claim 9
Dependent Claim
39 words
A combination according to claim 6 wherein the injector has opposite end portions, and the injector forms a diametrical chord for the tubular body with at least one of the opposite end portions being fixed to the tubular body.
Claim 10
Dependent Claim
56 words
A combination according to claim 7 wherein the nozzle is located in the injector at a position generally at the center of the tubular body and is positioned to face generally outwardly toward the distal end of the tubular body to direct medicament in a direction generally parallel to the longitudinal axis of the tubular body.
Claim 11
Dependent Claim
19 words
A combination according to claim 6 wherein the nozzle is located adjacent the distal end of the tubular body.
Claim 12
Dependent Claim
57 words
A combination according to claim 6 wherein: the orifice diameter is approximately 100 mils, the lumen diameter is approximately 2.92 millimeters, the lumen length is selected from the group of approximately 152.4 or 304.8 millimeters, and the MDI valve volume is selected from the group consisting of approximately 25 ul, 50 ul, 63 ul or 100 ul.
Claim 13
Dependent Claim
37 words
A combination according to claim 6 wherein: the orifice diameter is approximately 33 mils, the lumen diameter is approximately 1.19 millimeters, the lumen length is approximately 152.4 millimeters and the MDI valve volume is about 100 ul.
Claim 14
Dependent Claim
44 words
A combination according to claim 6 wherein: the orifice diameter is approximately 5 mils, the lumen diameter is approximately 1.14 millimeters, the lumen length is selected from the group of approximately 152.4 or 304.8 millimeters, and the MDI valve volume is approximately 100 ul.
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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) | 1996-08-02 | 1997-02-01 | 1997-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-08-02 | 2001-02-01 | 2001-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-08-02 | 2005-02-01 | 2005-08-03 | $7700.00 | Window Closed / Lapsed |