US20030109793A1 - Patient esophageal detector device in combination with a carbon dioxide detector - Google Patents
Patient esophageal detector device in combination with a carbon dioxide detector Download PDFInfo
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- US20030109793A1 US20030109793A1 US10/008,829 US882901A US2003109793A1 US 20030109793 A1 US20030109793 A1 US 20030109793A1 US 882901 A US882901 A US 882901A US 2003109793 A1 US2003109793 A1 US 2003109793A1
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- detector
- port
- esophageal
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- rim
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/04—Tracheal tubes
- A61M16/0488—Mouthpieces; Means for guiding, securing or introducing the tubes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/80—Suction pumps
- A61M1/82—Membrane pumps, e.g. bulbs
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/08—Detecting, measuring or recording devices for evaluating the respiratory organs
- A61B5/083—Measuring rate of metabolism by using breath test, e.g. measuring rate of oxygen consumption
- A61B5/0836—Measuring rate of CO2 production
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/04—Tracheal tubes
- A61M16/0402—Special features for tracheal tubes not otherwise provided for
- A61M16/0411—Special features for tracheal tubes not otherwise provided for with means for differentiating between oesophageal and tracheal intubation
- A61M2016/0413—Special features for tracheal tubes not otherwise provided for with means for differentiating between oesophageal and tracheal intubation with detectors of CO2 in exhaled gases
Definitions
- This invention relates to carbon dioxide (CO 2 ) detectors. More particularly, it refers to a housing containing CO 2 calorimetric indicator paper, the housing attached to a bulb style esophageal detector device for detecting CO 2 levels in the aspirated air from a patient following intubation.
- CO 2 carbon dioxide
- U.S. Pat. No. 4,691,701 describes an early portable CO 2 detector in the form of a transparent disc containing a chemical substance exhibiting a color change indication when exposed to carbon dioxide from a patient.
- U.S. Pat. Nos. 5,197,464 and 5,291,879 describe methods of monitoring CO 2 levels in a patient using a reversible indicator solution so that the indicator changes color continuously with the breathing of a patient.
- references that include references to CO 2 color change devices are 4,790,327; 4,928,687; 4,994,117; 5,005,572; 5,166,075; 5,179,002; 5,846,836 and 5,965,061.
- a critical step in the intubation of a patient is a determination that the intubation tube or endotracheal tube is placed in the trachea and not in the esophagus. If the tube is in the esophagus, there is no return of CO 2 beyond ambient levels from a patient's aspirated air. If the tube is in the trachea, CO 2 will be present up to about five percent concentration.
- the trachea is substantially rigid because it is made up of C-shaped ridges of rigid cartilagineous rings joined vertically by fibro elastic tissue.
- the esophagus is a fibro muscular tube having no intrinsic structure to maintain any rigidity.
- the use of a bulb at the end of the often used and well known esophageal detector device is based on the principal that the esophagus will collapse when a negative pressure is applied to its lumen, whereas a trachea will not because of its greater rigidity.
- an intubation tube is placed in the patient's trachea and a soft rubber bulb is compressed and then attached at one end of the intubation tube.
- the tube will aspirate gas freely from the patient's lungs without any resistance if the tube is in the trachea when the bulb is released. If the intubation tube is in the esophagus, the negative pressure caused by the bulb will cause the esophagus to collapse and the bulb will stay compressed. Misplacement of the intubation tube can affect the mortality of the patient.
- CO 2 detector serves this purpose. Although CO 2 detector's exist, the use with an esophageal detector device to provide confirmation of proper intubation tube placement is not known. Such a combined device exhibiting ease of use, low cost and connection to existing breathing apparatus is needed.
- the invention described herein is an improvement over existing esophageal detector devices used for verifying placement of an intubation tube in a patient's trachea.
- the CO 2 detector employed in this invention has an easily mountable colorimetric indicator paper that changes color in response to CO 2 levels in aspirated air from a patient. It is easily mountable in communication with an esophageal detector device housing, is lightweight and gives easily readable and reliable CO 2 detection to confirm intubation tube placement in the patient's trachea.
- the preferred CO 2 detector is a clear plastic disc mounted on a rim.
- Indicator paper is mounted on the inside surface of the plastic disc.
- Backing paper on the indicator paper is removed prior to use of the detector by pulling on the backing paper protruding from a port in a cylindrical housing on which the rim of the disc is mounted.
- the backing paper insures that the indicator paper will not be exposed prior to use.
- the disc rim is glued or heat welded to the esophageal detector housing.
- a baffle is mounted on an inner wall of the esophageal detector housing between a first and second axially positioned port.
- the first port is connected to an elastomeric bulb and the second port is connected to an intubation tube adapter leading to an intubation tube for insertion in a patient's trachea.
- an intubation tube adapter leading to an intubation tube for insertion in a patient's trachea.
- FIG. 1 is an exploded view in perspective of the indicator paper being affixed to a bottom surface of a disc for the CO 2 detector of the invention.
- FIG. 2 is a perspective view of folded indicator paper backing prior to insertion into a port of the housing.
- FIG. 3 is an exploded view in perspective of the bulb and housing components in the esophageal detector device with the CO 2 detector.
- FIG. 4 is a perspective view of the indicator paper backing inserted into a port on the esophageal detector housing.
- FIG. 5 is a perspective view of the backing paper being removed from the CO 2 detector.
- FIG. 6 is a perspective view of the intubation tube adapter being inserted in a port of the esophageal detector housing.
- FIG. 7 is an elevational view in section of the combined CO 2 detector and esophageal detector device of FIG. 6 along lines 7 - 7 .
- FIG. 8 is an elevational view in section of the combined device of FIG. 6 showing a compressed soft bulb.
- FIG. 9 is an elevational view in section of the combined device of FIG. 6 along line 7 - 7 showing the route of a patient's aspirated air past the CO 2 detector when the compressed bulb is released.
- the esophageal detector device 10 with CO 2 detector 12 of this invention shown in FIG. 6 has several principal components as shown in FIGS. 3 and 6.
- the detector device 10 has a soft elastomeric bulb 14 at a first end of a housing 16 .
- the housing 16 is preferably in the form of a hollow cylinder attached at a first end 18 at a first port 19 to the elastomeric bulb 14 through opening 20 and at a second end 22 to an intubation tube adapter 24 through second port 26 .
- the first and second ports are preferably axially aligned.
- housing 16 can have an elliptical, square or other practical geometric shapes and the first and second ports can be offset from each other.
- the adapter 24 has a tapered insertion end 28 for engagement with an intubation tube 30 as seen in FIG. 6.
- the CO 2 detector 12 shown in FIGS. 1 and 2 has a clear plastic disc 32 attached to an annular rim 34 .
- the disc can be clear glass.
- a calorimetric indicator paper 38 or other chemically impregnated substrate is affixed to a bottom surface 36 of the disc 32 .
- indicator paper it is affixed by glue after first removing a bottom section of backing paper 40 as seen in FIG. 1.
- Another section of backing paper 42 is folded downwardly as shown in FIG. 3 and passes out through second port 26 in housing 16 .
- the rim 34 is glued, snap-fit or heat welded over a top rim 44 of housing 16 .
- An O-ring 46 seals the CO 2 detector rim 34 to the housing rim 44 .
- the calorimetric indicator paper can be a saturated paper containing a CO 2 sensitive color change chemical.
- a vertically placed baffle 48 is integral with interior surface 50 of housing 16 . Such baffle 48 protrudes upwardly to a position slightly below rim 44 .
- the elastomeric bulb 14 is attached to first end 18 of housing 16 as seen in FIG. 3.
- a flange 52 acts as a stop against edge 54 of the elastomeric bulb 14 .
- the intubation tube adapter 24 is inserted into the second port 26 .
- the flange 56 may engage edge 60 of the housing 16 .
- the tapered end 28 of the adapter 24 fits into an opening 58 of an intubation tube 30 .
- the intubation tube In the event that the intubation tube is improperly placed into the esophagus, as the esophagus has no intrinsic structure to maintain rigidity, the esophagus will collapse due to the vacuum created by the compressed bulb 14 , thus blocking and sealing the distal end of the intubation tube 30 .
- the bulb 14 will remain in a compressed state due to the internal partial vacuum.
- no aspirated air containing CO 2 will pass over baffle 48 and the color of the calorimetric indicator paper will remain unchanged, therefore warning the caregiver that the intubation tube 30 is not in the trachea and should immediately be reinserted.
- the calorimetric indicator paper 38 Absent the use of the calorimetric indicator paper 38 it sometimes occurs that even though the intubation tube 30 is wrongly placed in the esophagus, the bulb 14 reinflates because of a leak, suggesting that the tube is properly placed. The use of the calorimetric indicator paper 38 is therefore a fail-safe method of confirming the proper placement of the intubation tube 30 .
- the components of the invention except for the bulb 14 and O-ring 46 are made of plastic with the disc made of clear plastic although it could be made of clear glass. The remaining components may or may not be made out of the clear plastic.
- the indicator paper backing 40 and 42 can be any acceptable commercial grade backing paper with a calorimetric indicator 38 such as described in U.S. Pat. Nos. 5,005,572 and 5,965,061, incorporated herein by reference.
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- Engineering & Computer Science (AREA)
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- Biomedical Technology (AREA)
- Pulmonology (AREA)
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- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
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- Investigating Or Analysing Biological Materials (AREA)
- Measuring And Recording Apparatus For Diagnosis (AREA)
Abstract
The CO2 detector has a disc attached to a rim which in turn is attached to a third port on a esophageal detector housing. A baffle rises from an interior surface of the housing to slightly below an opening to the third port. A first and second port of the housing on each side of the third port are in axial alignment. The first port is attached to an elastomeric bulb and the second port is adapted to be connected to an adapter which in turn is attached to an intubation tube. A calorimetric indicator paper is shown through a clear plastic cover after removing backing on the indicator paper through the second port.
Description
- This invention relates to carbon dioxide (CO2) detectors. More particularly, it refers to a housing containing CO2 calorimetric indicator paper, the housing attached to a bulb style esophageal detector device for detecting CO2 levels in the aspirated air from a patient following intubation.
- U.S. Pat. No. 4,691,701 describes an early portable CO2 detector in the form of a transparent disc containing a chemical substance exhibiting a color change indication when exposed to carbon dioxide from a patient.
- U.S. Pat. Nos. 5,197,464 and 5,291,879 describe methods of monitoring CO2 levels in a patient using a reversible indicator solution so that the indicator changes color continuously with the breathing of a patient.
- Other references that include references to CO2 color change devices are 4,790,327; 4,928,687; 4,994,117; 5,005,572; 5,166,075; 5,179,002; 5,846,836 and 5,965,061.
- A critical step in the intubation of a patient is a determination that the intubation tube or endotracheal tube is placed in the trachea and not in the esophagus. If the tube is in the esophagus, there is no return of CO2 beyond ambient levels from a patient's aspirated air. If the tube is in the trachea, CO2 will be present up to about five percent concentration.
- The trachea is substantially rigid because it is made up of C-shaped ridges of rigid cartilagineous rings joined vertically by fibro elastic tissue. The esophagus, on the other hand, is a fibro muscular tube having no intrinsic structure to maintain any rigidity. The use of a bulb at the end of the often used and well known esophageal detector device is based on the principal that the esophagus will collapse when a negative pressure is applied to its lumen, whereas a trachea will not because of its greater rigidity. Normally, an intubation tube is placed in the patient's trachea and a soft rubber bulb is compressed and then attached at one end of the intubation tube. The tube will aspirate gas freely from the patient's lungs without any resistance if the tube is in the trachea when the bulb is released. If the intubation tube is in the esophagus, the negative pressure caused by the bulb will cause the esophagus to collapse and the bulb will stay compressed. Misplacement of the intubation tube can affect the mortality of the patient.
- Since it is common in emergency situations for less highly skilled technicians to apply intubation tubes for maintaining the patient's airway, it is important to have a portable single patient device confirming the proper initial placement of the intubation tube. A CO2 detector serves this purpose. Although CO2 detector's exist, the use with an esophageal detector device to provide confirmation of proper intubation tube placement is not known. Such a combined device exhibiting ease of use, low cost and connection to existing breathing apparatus is needed.
- The invention described herein is an improvement over existing esophageal detector devices used for verifying placement of an intubation tube in a patient's trachea. The CO2 detector employed in this invention has an easily mountable colorimetric indicator paper that changes color in response to CO2 levels in aspirated air from a patient. It is easily mountable in communication with an esophageal detector device housing, is lightweight and gives easily readable and reliable CO2 detection to confirm intubation tube placement in the patient's trachea.
- The preferred CO2 detector is a clear plastic disc mounted on a rim. Indicator paper is mounted on the inside surface of the plastic disc. Backing paper on the indicator paper is removed prior to use of the detector by pulling on the backing paper protruding from a port in a cylindrical housing on which the rim of the disc is mounted. The backing paper insures that the indicator paper will not be exposed prior to use. The disc rim is glued or heat welded to the esophageal detector housing. A baffle is mounted on an inner wall of the esophageal detector housing between a first and second axially positioned port. The first port is connected to an elastomeric bulb and the second port is connected to an intubation tube adapter leading to an intubation tube for insertion in a patient's trachea. Provided the tube is properly placed, the aspirated air from the patient will cause a color change on the calorimetric indicator paper viewed through the clear plastic cover of the CO2 detector of this invention.
- The invention can be best understood by those having ordinary skill in the art of patient intubation by following the detailed description when considered in conjunction with the accompanying drawings in which:
- FIG. 1 is an exploded view in perspective of the indicator paper being affixed to a bottom surface of a disc for the CO2 detector of the invention.
- FIG. 2 is a perspective view of folded indicator paper backing prior to insertion into a port of the housing.
- FIG. 3 is an exploded view in perspective of the bulb and housing components in the esophageal detector device with the CO2 detector.
- FIG. 4 is a perspective view of the indicator paper backing inserted into a port on the esophageal detector housing.
- FIG. 5 is a perspective view of the backing paper being removed from the CO2 detector.
- FIG. 6 is a perspective view of the intubation tube adapter being inserted in a port of the esophageal detector housing.
- FIG. 7 is an elevational view in section of the combined CO2 detector and esophageal detector device of FIG. 6 along lines 7-7.
- FIG. 8 is an elevational view in section of the combined device of FIG. 6 showing a compressed soft bulb.
- FIG. 9 is an elevational view in section of the combined device of FIG. 6 along line7-7 showing the route of a patient's aspirated air past the CO2 detector when the compressed bulb is released.
- Throughout the following detailed description, the same reference numerals refer to the same elements in all figures.
- The
esophageal detector device 10 with CO2 detector 12 of this invention shown in FIG. 6 has several principal components as shown in FIGS. 3 and 6. Thedetector device 10 has a softelastomeric bulb 14 at a first end of ahousing 16. - The
housing 16 is preferably in the form of a hollow cylinder attached at afirst end 18 at afirst port 19 to theelastomeric bulb 14 throughopening 20 and at asecond end 22 to anintubation tube adapter 24 throughsecond port 26. The first and second ports are preferably axially aligned. Alternatively,housing 16 can have an elliptical, square or other practical geometric shapes and the first and second ports can be offset from each other. Theadapter 24 has a taperedinsertion end 28 for engagement with anintubation tube 30 as seen in FIG. 6. - The CO2 detector 12 shown in FIGS. 1 and 2 has a
clear plastic disc 32 attached to anannular rim 34. Alternatively, the disc can be clear glass. Acalorimetric indicator paper 38 or other chemically impregnated substrate is affixed to abottom surface 36 of thedisc 32. In the case of indicator paper, it is affixed by glue after first removing a bottom section of backingpaper 40 as seen in FIG. 1. Another section of backingpaper 42 is folded downwardly as shown in FIG. 3 and passes out throughsecond port 26 inhousing 16. Therim 34 is glued, snap-fit or heat welded over atop rim 44 ofhousing 16. - An O-
ring 46 seals the CO2 detector rim 34 to thehousing rim 44. Alternatively, the calorimetric indicator paper can be a saturated paper containing a CO2 sensitive color change chemical. - A vertically placed
baffle 48 is integral withinterior surface 50 ofhousing 16.Such baffle 48 protrudes upwardly to a position slightly belowrim 44. - The
elastomeric bulb 14 is attached tofirst end 18 ofhousing 16 as seen in FIG. 3. Aflange 52 acts as a stop againstedge 54 of theelastomeric bulb 14. Theintubation tube adapter 24 is inserted into thesecond port 26. Theflange 56 may engageedge 60 of thehousing 16. Thetapered end 28 of theadapter 24 fits into anopening 58 of anintubation tube 30. - In operation shown in FIGS. 8 and 9, after the intubation tube is placed in the patient's trachea,
bulb 14 is squeezed to force air out prior to attaching thehousing 16 to theadapter 24. In the event that the intubation tube is properly placed into the trachea, as the trachea is substantially rigid, air is able to be aspirated from the trachea and thebulb 14 is able to freely re-expand. In addition, the air aspirated from the trachea, containing up to five percent CO2, will pass overbaffle 48 and change the color of thecalorimetric indicator paper 38, which is fully exposed because backingpaper 42 has been pulled out throughsecond port 26 as shown in FIGS. 4 and 5. - In the event that the intubation tube is improperly placed into the esophagus, as the esophagus has no intrinsic structure to maintain rigidity, the esophagus will collapse due to the vacuum created by the
compressed bulb 14, thus blocking and sealing the distal end of theintubation tube 30. Thebulb 14 will remain in a compressed state due to the internal partial vacuum. In addition, no aspirated air containing CO2 will pass overbaffle 48 and the color of the calorimetric indicator paper will remain unchanged, therefore warning the caregiver that theintubation tube 30 is not in the trachea and should immediately be reinserted. Absent the use of thecalorimetric indicator paper 38 it sometimes occurs that even though theintubation tube 30 is wrongly placed in the esophagus, thebulb 14 reinflates because of a leak, suggesting that the tube is properly placed. The use of thecalorimetric indicator paper 38 is therefore a fail-safe method of confirming the proper placement of theintubation tube 30. - The components of the invention except for the
bulb 14 and O-ring 46 are made of plastic with the disc made of clear plastic although it could be made of clear glass. The remaining components may or may not be made out of the clear plastic. Theindicator paper backing calorimetric indicator 38 such as described in U.S. Pat. Nos. 5,005,572 and 5,965,061, incorporated herein by reference. - The above description has described specific structural details of the combination CO2 detector and esophageal detector of this invention. However, it will be within one having ordinary skill in the art to make modifications without departing from the spirit and scope of the underlying invention's inventive concept. The inventive concept is not limited to the structure described, but includes such modifications as would be considered equivalent.
Claims (15)
1. An esophageal detector device in combination with a carbon dioxide (CO2) detector, the device and detector comprising:
an esophageal detector housing containing a first port connected to an elastomeric bulb, and a second port adapted for receipt of a first end of an intubation tube adapter and a third port between the first and second port; and
a disc overlaying a chemically treated calorimetric indicator paper and a support for the disc affixed to the third port.
2. The esophageal detector device in combination with the CO2 detector according to claim 1 wherein a baffle is integral with an interior surface of the esophageal detector housing below the third port.
3. The esophageal detector device in combination with the CO2 detector according to claim 1 wherein the disc is a clear plastic affixed to a rim with the colorimetric indicator paper glued to a bottom surface of the disc.
4. The esophageal detector device in combination with the CO2 detector according to claim 3 wherein an O-ring is positioned between the rim of the clear plastic disc and a rim of the third port.
5. The esophageal detector device in combination with the CO2 detector according to claim 1 wherein the esophageal detector housing is cylindrical in shape and the first and second port are in axial alignment with each other.
6. The esophageal detector device in combination with the CO2 detector according to claim 1 wherein the indicator paper is partially covered with a backing paper prior to use, the backing paper protruding through the second port in the esophageal detector device and being removed by pulling on the protruding backing paper to fully expose the indicator paper.
7. A carbon dioxide (CO2) detector for use in combination with an esophageal detector, the CO2 detector portion comprising:
a clear plastic disc seated on a rim affixed to the rim of a third port on a housing of the esophageal detector, the esophageal detector having a first and second port on each side distal from the third port,
a top surface of a calorimetric indicator paper affixed to a bottom surface of the clear plastic disc and a backing paper remaining on a bottom surface of the indicator paper, the backing paper protruding out of the second port on the esophageal detector and an elastomeric bulb attached to the first port of the esophageal detector, the backing paper having been pulled out of the second port prior to attachment of an intubation tube adapter to the second port.
8. The CO2 detector and esophageal detector according to claim 7 wherein the CO2 detector rim is snap-fit to the third port.
9. The CO2 detector and esophageal detector according to claim 7 wherein the CO2 detector rim is heat welded to the third port.
10. The CO2 detector and esophageal detector according to claim 7 wherein the CO2 detector rim is glued to the third port.
11. The CO2 detector and intubation device according to claim 7 wherein a baffle is mounted on an inner surface of the esophageal detector housing and positioned to rise vertically to slightly below the indicator paper at the third port.
12. The CO2 detector and esophageal detector device according to claim 7 wherein a flange on an outer surface of the adapter engages an outer edge of the esophageal detector housing and a flange on the esophageal detector housing engages an edge of an opening to the elastomeric bulb.
13. The CO2 and esophageal detector device according to claim 7 wherein the esophageal detector housing is cylindrical in shape.
14. The CO2 detector and esophageal detector device according to claim 7 wherein the first and second port on the esophageal detector device are in axial alignment.
15. An esophageal detector device in combination with a carbon dioxide (CO2) detector, the device and detector comprising:
an esophageal detector housing containing a first port connected to an elastomeric bulb, and a second port adapted for receipt of a first end of an intubation tube adapter and a third port between the first and second port;
a disc overlaying a chemically treated calorimetric indicator paper and a support for the disc affixed to the third port; and
the intubation tube adapter affixed at a first end to the second port and affixed at a second end to an intubation tube.
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---|---|---|---|---|
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US20110077495A1 (en) * | 2005-02-08 | 2011-03-31 | Gilbert Paul J | Detection indicator |
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---|---|---|---|---|
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US7140370B2 (en) * | 2004-04-21 | 2006-11-28 | Chrickemil, L.L.C. | Endotracheal tube system and method of use |
US6994087B1 (en) * | 2004-12-02 | 2006-02-07 | Smith John D | Esophageal intubation detection system |
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US8776796B2 (en) | 2011-12-09 | 2014-07-15 | Colabs, Inc. | Apparatus and method for improved assisted ventilation |
US9170193B2 (en) | 2013-06-06 | 2015-10-27 | General Electric Company | Detecting coolant leaks in turbine generators |
US10175254B2 (en) | 2013-07-16 | 2019-01-08 | Palo Alto Health Sciences, Inc. | Methods and systems for quantitative colorimetric capnometry |
US9097657B2 (en) | 2013-07-23 | 2015-08-04 | General Electric Company | Leak detection of stator liquid cooling system |
EP4167849A1 (en) | 2020-06-17 | 2023-04-26 | Affirm Medical Technologies II, LLC | Universal respiratory detector |
Family Cites Families (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3212097C2 (en) * | 1982-04-01 | 1985-10-03 | Drägerwerk AG, 2400 Lübeck | Ventilator with a breathing gas source that can be controlled via a control unit |
US4691701A (en) | 1986-07-28 | 1987-09-08 | Tudor Williams R | Carbon dioxide detector |
US4790327A (en) * | 1987-07-27 | 1988-12-13 | George Despotis | Endotracheal intubation device |
US5005572A (en) | 1988-02-26 | 1991-04-09 | Brigham & Women's Hospital | CO2 indicator and the use thereof to evaluate placement of tracheal tubes |
US5197464A (en) | 1988-02-26 | 1993-03-30 | Babb Albert L | Carbon dioxide detection |
US5124129A (en) * | 1988-07-29 | 1992-06-23 | Mallinckrodt Medical, Inc. | Carbon dioxide indicator |
US5156159A (en) * | 1988-10-11 | 1992-10-20 | University Of Florida | CO2 diagnostic monitor with rupturable container |
US4928687A (en) * | 1988-10-11 | 1990-05-29 | The University Of Florida | CO2 diagnostic monitor |
US5846836A (en) | 1990-06-06 | 1998-12-08 | Southwest Research Institute | Reversible detector for gaseous carbon dioxide |
FI921924A (en) * | 1991-05-08 | 1992-11-09 | Nellcor Inc | PORTABEL COLDIOXIDE MONITOR |
US5400770A (en) * | 1992-01-15 | 1995-03-28 | Nakao; Naomi L. | Device utilizable with endoscope and related method |
SE505709C2 (en) | 1992-06-29 | 1997-09-29 | Minco Ab | Device for indicating the presence of carbon dioxide in a patient's exhaled air |
US5375592A (en) * | 1993-04-08 | 1994-12-27 | Kirk; Gilbert M. | Carbon dioxide detector and shield |
US5360003A (en) * | 1993-06-11 | 1994-11-01 | Capistrano Cecilio L | Intubation assembly and method of inserting same having a balloon to indicate the position of tube inside of the patient |
US5487731A (en) * | 1994-02-22 | 1996-01-30 | Wolfe Tory Medical, Inc. | Esophageal intubation detector with indicator |
US5885248A (en) * | 1994-02-22 | 1999-03-23 | Wolf Tory Medical, Inc. | Intubation detection system with transducer based indicator |
US5591130A (en) * | 1994-02-22 | 1997-01-07 | Wolfe Troy Medical, Inc. | Esophageal intubation detector with indicator |
SE504068C2 (en) | 1995-02-03 | 1996-10-28 | Icor Ab | Ways to increase the shelf life of a device to indicate carbon dioxide and packaging containing the device |
US5785051A (en) * | 1996-06-21 | 1998-07-28 | University Of Rochester | Signal generating endotracheal tube apparatus |
US5749358A (en) * | 1996-10-10 | 1998-05-12 | Nellcor Puritan Bennett Incorporated | Resuscitator bag exhaust port with CO2 indicator |
US6202646B1 (en) * | 1998-12-23 | 2001-03-20 | Para Products Incorporated | Detection device for verifying the proper intubation of an endotracheal tube |
US6149603A (en) * | 1999-05-14 | 2000-11-21 | Ventrex, Inc. | Method and apparatus for determining whether an intubated patient has been properly intubated |
US6502573B1 (en) * | 2001-11-15 | 2003-01-07 | Mercury Enterprises, Inc. | Portable single patient use carbon dioxide detector |
-
2001
- 2001-12-07 US US10/008,829 patent/US6584974B1/en not_active Expired - Fee Related
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110077495A1 (en) * | 2005-02-08 | 2011-03-31 | Gilbert Paul J | Detection indicator |
US9173602B2 (en) | 2005-02-08 | 2015-11-03 | Paul J. Gilbert | Fluid characteristic measurement |
WO2007134562A1 (en) * | 2006-05-18 | 2007-11-29 | Universitätsklinikum Schleswig-Holstein | Device for endotracheal intubation |
GB2439641A (en) * | 2006-06-28 | 2008-01-02 | Smiths Group Plc | Intubation detector |
US20080210235A1 (en) * | 2006-06-28 | 2008-09-04 | Smiths Group Plc | Intubation detector |
GB2439641B (en) * | 2006-06-28 | 2011-02-09 | Smiths Group Plc | Intubation detector |
WO2008003928A1 (en) * | 2006-07-04 | 2008-01-10 | Smiths Group Plc | Respiratory assembly including a carbon dioxide detector |
US20100065063A1 (en) * | 2006-07-04 | 2010-03-18 | Smiths Group Plc | Detectors |
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JP2017505212A (en) * | 2014-01-27 | 2017-02-16 | センスブレス・アクチボラゲットSensebreath Ab | Manual resuscitator and capnograph assembly |
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