US4967759A
Expired / Lapsed
US
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Cardiac monitor with endotracheal sensor
Assignee: Advanced Medical Concepts Inc
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Filing: 1988-08-18
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Granted: 1990-11-06
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Expires: 2008-08-18
Abstract
Abstract An endotracheal tube and inflatable cuff assembly that allows medical instrumentation to be positioned in the trachea. The device remains securely placed in the trachea and allows the passage of gases to the lungs to be controlled. It also provides means for containing various medical instrumentation in a hermetically sealed environment. The device is used during surgery for placement of medical instrumentation, such as heart monitors and electrodes for atrial pacing, inside a hermetically sealed inflatable cuff such that the instrumentation can be appropriately positioned inside the trachea. In another embodiment, no instrumentation is employed so that the inherent limitations of instruments are avoided.
Inventors
- 👤 Leonides Y. Teves
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:29
CPC Classifications
A; A61; A61B; A61B7/00; A61B7/02; A61B7/023; A61M; A61M16/00; A61M16/04; A61M16/0486; A61M2205/00; A61M2205/33; A61M2205/3368
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
218 words
An endotracheal heartbeat monitoring apparatus comprising: a flexible endotracheal tube for insertion through the mouth of a patient, said tube having a proximal end and a distal end; means defining a respiratory passage within the endotracheal tube for the control and monitoring of respiration during surgery; an inflatable cuff disposed near the distal end of the endotracheal tube, said cuff having proximal and distal ends; the proximal and distal ends of the cuff both being sealed to an outer surface of the endotracheal tube; said inflatable cuff being of appropriate size when deflated to pass easily through the trachea, and of appropriate size when inflated to contact and conform intimately to the inner wall of the trachea; at least one flexible lumen disposed lengthwise along the endotracheal tube from said proximal end thereof to the interior of said inflatable cuff; said at least one lumen being disposed external to said endotracheal tube in contacting relation to said endotracheal tube; and sound pressure level sensing means within the inflatable cuff for the purpose of sensing changes in the sound pressure level within the cuff, and for producing a signal in response to these changes; wherein said sound pressure level sensing means includes transmission means for the purpose of transmitting said signal to a monitoring device external to said apparatus.
Claim 2
Dependent Claim
218 words
An endotracheal heartbeat monitoring apparatus comprising: a flexible endotracheal tube for insertion through the mouth of a patient, said tube having a proximal end and a distal end; means defining a respiratory passage within the endotracheal tube for the control and monitoring of respiration during surgery; an inflatable cuff disposed near the distal end of the endotracheal tube, said cuff having proximal and distal ends; the proximal and distal ends of the cuff both being sealed to an outer surface of the endotracheal tube; said inflatable cuff being of appropriate size when deflated to pass easily through the trachea, and of appropriate size when inflated to contact and conform intimately to the inner wall of the trachea; at least one flexible lumen disposed lengthwise along the endotracheal tube from said proximal end thereof to the interior of said inflatable cuff; said at least one lumen being disposed external to said endotracheal tube in contacting relation to said endotracheal tube; and sound pressure level sensing means within the inflatable cuff for the purpose of sensing changes in the sound pressure level within the cuff, and for producing a signal in response to these changes; wherein said sound pressure level sensing means includes transmission means for the purpose of transmitting said signal to a monitoring device external to said apparatus.
Claim 3
Dependent Claim
19 words
The endotracheal heartbeat monitoring apparatus of claim 1, wherein the sound pressure level sensing means is an electro-acoustic transducer.
Claim 4
Dependent Claim
25 words
The endotracheal heartbeat monitoring apparatus of claim 2, wherein said transmission means includes at least a pair of conductive wires leading from said electro-acoustic transducer.
Claim 5
Dependent Claim
36 words
The endotracheal heartbeat monitoring apparatus of claim 3, wherein there is a first lumen and a second lumen and wherein each of said first and second lumens having respective inner diameters no less than 1.0 mm.
Claim 6
Dependent Claim
18 words
The endotracheal heartbeat monitoring apparatus of claim 3, wherein there is a first lumen and a second lumen.
Claim 7
Dependent Claim
33 words
The endotracheal heartbeat monitoring apparatus of claim 4 or 5, wherein said first lumen permits inflation of said cuff, and said second lumen permits passage of said electrically conductive wires into said cuff.
Claim 8
Dependent Claim
22 words
The endotracheal heartbeat monitoring apparatus of claim 1, wherein said sound pressure level sensing means is fixedly installed within said inflatable cuff.
Claim 9
Dependent Claim
22 words
The endotracheal heartbeat monitoring apparatus of claim 1, wherein said sound pressure level sensing means is removably installed within said inflatable cuff.
Claim 10
Dependent Claim
24 words
The endotracheal heartbeat monitoring apparatus of claim 1, wherein said at least one lumen permits fluid communication with the interior of said inflatable cuff.
Claim 11
Dependent Claim
29 words
The endotracheal heartbeat monitoring apparatus of claim 9, wherein means associated with said at least one lumen substantially precludes fluid flow in an outward direction from said inflatable cuff.
Claim 12
Dependent Claim
30 words
The endotracheal heartbeat monitoring apparatus of claim 9, wherein said at least one lumen permits insertion of said sound pressure level sensing means into the interior of said inflatable cuff.
Claim 13
Dependent Claim
30 words
The endotracheal heartbeat monitoring apparatus of claim 9, wherein said at least one lumen permits removal of said sound pressure level sensing means from the interior of said inflatable cuff.
Claim 14
Dependent Claim
23 words
The endotracheal heartbeat monitoring apparatus of claim 1, wherein said at least one lumen has an inner diameter of at least 1.0 mm.
Claim 15
Dependent Claim
35 words
The endotracheal heartbeat monitoring apparatus of claim 1, further comprising a self-contained radio frequency emitting device, and wherein said sound pressure level sensing means is used in conjunction with said self-contained radio frequency emitting device.
Claim 16
Dependent Claim
154 words
An endotracheal heartbeat monitoring apparatus comprising: an elongate, flexible endotracheal tube, said tube having a proximal end and a distal end; an inflatable cuff disposed near the distal end of said tube; said cuff having a proximal end and a distal end; the proximal end and distal end of said cuff being sealed to an outer surface of said tube; at least one flexible lumen disposed in abutting relation to said tube from the proximal end of the tube to a location interior to said cuff; said at least one flexible lumen being disposed external to said endotracheal tube; fastening means for permanently maintaining said at least one lumen in abutting relation to said tube; said lumen and said cuff being filled with a common gaseous fluid so that acoustical signals appearing in the interior of said cuff are transmitted to the proximal end of said flexible lumen where said signals may be heard.
Claim 17
Dependent Claim
154 words
An endotracheal heartbeat monitoring apparatus comprising: an elongate, flexible endotracheal tube, said tube having a proximal end and a distal end; an inflatable cuff disposed near the distal end of said tube; said cuff having a proximal end and a distal end; the proximal end and distal end of said cuff being sealed to an outer surface of said tube; at least one flexible lumen disposed in abutting relation to said tube from the proximal end of the tube to a location interior to said cuff; said at least one flexible lumen being disposed external to said endotracheal tube; fastening means for permanently maintaining said at least one lumen in abutting relation to said tube; said lumen and said cuff being filled with a common gaseous fluid so that acoustical signals appearing in the interior of said cuff are transmitted to the proximal end of said flexible lumen where said signals may be heard.
Claim 18
Dependent Claim
23 words
The endotracheal heartbeat monitoring apparatus of claim 15, wherein said at least one lumen has an inner diameter of at least 1.0 mm.
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) | 1993-11-05 | 1994-05-07 | 1994-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-11-05 | 1998-05-07 | 1998-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-11-05 | 2002-05-07 | 2002-11-06 | $7700.00 | Window Closed / Lapsed |