GB2264869A - Apparatus for identifying tracheal intubation or tracheal tube blockage - Google Patents
Apparatus for identifying tracheal intubation or tracheal tube blockage Download PDFInfo
- Publication number
- GB2264869A GB2264869A GB9204486A GB9204486A GB2264869A GB 2264869 A GB2264869 A GB 2264869A GB 9204486 A GB9204486 A GB 9204486A GB 9204486 A GB9204486 A GB 9204486A GB 2264869 A GB2264869 A GB 2264869A
- Authority
- GB
- United Kingdom
- Prior art keywords
- identifying
- endotracheal tube
- signalling device
- air
- flow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000002627 tracheal intubation Methods 0.000 title claims description 12
- 230000011664 signaling Effects 0.000 claims abstract description 17
- 210000004072 lung Anatomy 0.000 claims abstract description 7
- 210000003437 trachea Anatomy 0.000 claims abstract description 5
- 235000014676 Phragmites communis Nutrition 0.000 claims abstract description 4
- 238000003780 insertion Methods 0.000 claims abstract 3
- 230000037431 insertion Effects 0.000 claims abstract 3
- 238000000034 method Methods 0.000 claims description 9
- 238000009423 ventilation Methods 0.000 claims description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000013276 bronchoscopy Methods 0.000 description 2
- 208000007204 Brain death Diseases 0.000 description 1
- 206010021143 Hypoxia Diseases 0.000 description 1
- 230000006931 brain damage Effects 0.000 description 1
- 231100000874 brain damage Toxicity 0.000 description 1
- 208000029028 brain injury Diseases 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000007954 hypoxia Effects 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
Classifications
-
- 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. ventilators; Tracheal tubes
- A61M16/04—Tracheal 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
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; 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
-
- 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. ventilators; Tracheal tubes
- A61M16/04—Tracheal tubes
- A61M16/0402—Special features for tracheal tubes not otherwise provided for
- A61M16/042—Special features for tracheal tubes not otherwise provided for with separate conduits for in-and expiration gas, e.g. for limited dead volume
Landscapes
- Health & Medical Sciences (AREA)
- Pulmonology (AREA)
- Emergency Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Endoscopes (AREA)
Abstract
An endotracheal tube 1 is connected to an air flow signalling device 2, preferably a sound-emitting horn 4 containing a reed, so that on correct insertion of the tube into the trachea flow of air from the lungs causes the signalling device to emit a signal. The apparatus can be connected to a ventilator via a catheter mount 6 to identify a blockage in an endotracheal tube, a pressure control valve 8 being inserted between the connector 3' and the device 2 to prevent air flow therethrough during normal lung inflation. <IMAGE>
Description
Apparatus and method for identifying tracheal
intubation, and for identifying a blockage in an
endotracheal tube
The present invention relates to apparatus and a method for identifying tracheal intubation, and apparatus and a method for identifying a blockage in an inserted endotracheal tube.
It is known that tracheal intubation may be identified by clinical observation, capnography and fibreoptic bronchoscopy. Although such methods may be satisfactory there are disadvantages as clinical observations are not always reliable; capnography requires the production of carbon dioxide and fibreoptic bronchoscopy requires expertise and expensive electrical equipment. Failure to oxygenate via the trachea may result in hypoxia and lead to irreversible brain damage and death.
An object of the invention is to provide an apparatus and method which avoid the above disadvantages without reducing substantial exposure.
The invention provides apparatus for identifying tracheal intubation as claimed in claim 1, and a method as claimed in claim 10.
The invention also provides apparatus for identifying a blockage in an inserted endotracheal tube as claimed in claim 6 and a method as claimed in claim 11.
Two embodiments of the invention will now be described with reference to the accompanying drawing, wherein:
Figure 1 is a diagrammatic longitudinal sectional view of apparatus for indentifying tracheal intubation,
Figure 2 is a diagrammatic sectional view of the signalling device of Figure 1 on an enlarged scale, and
Figure 3 is a vertical longitudinal sectional view of apparatus for identifying a blockage in an inserted endotracheal tube.
In Figure 1 apparatus for identifying tracheal intubation comprises an endotracheal tube 1 and an air-flow signalling device 2 connected thereto by means of an endotracheal tube connector 3. As can be seen from Figure 2 the signalling device 2 is sound emitting and is in the form of a horn 4 having a reed 5.
As the endotracheal tube 1 is inserted down the patient' 5 throat into the trachea, pressure on the patient' 5 chest produces a flow of air back through the tube 1 and into the horn 4 to cause the reed 5 to vibrate and emit a sound. If the tube 1 is wrongly inserted, i. e. into the oesophagus, there will be no air flow through the horn 4 when the patients s chest is compressed. Thus, correct tracheal intubation is detected easily and with minimal cost.
The apparatus according to the invention may also be used during lung ventilation to detect blockage in the endotracheal tube as shown in Figure 3. The endotracheal connector 3' shown here is connected to a catheter mount 6 comprising a flexible tube 7 and two end connecting members 7', 7''. The catheter mount 6 is connected to a ventilator (not shown). A pressure-control valve 8 is inserted between the connector 3' and the signalling device 2 to prevent air-flow through the signalling device 2 during normal inflation of the lungs by the ventilator.
If the endotracheal tube 1 becomes blocked, e.g. by kinking, the pressure in the flexible tube 7 rises above the operating pressure of the pressure control valve 8 so as to open the valve 8 and operate the signalling device 2.
Claims (1)
- Claims:-1. Apparatus for identifying tracheal intubation comprising an endotracheal tube and an air-flow signalling device connected thereto, so that on correct insertion of the tube into the trachea flow of air from the lungs causes the signalling device to emit a signal.2. Apparatus as claimed in claim 1, wherein the signalling device emits a sound on passage of air therethrough.3. Apparatus as claimed in claim 2, wherein the signalling device comprises an air-flow actuated reed.4. Apparatus as claimed in claim 2 or 3, wherein the signalling device is horn-shaped to magnify the sound emitted thereby.5. Apparatus as claimed in any one of the preceding claims, wherein the endotracheal tube is connected to the sound-emitting device by means of an endotracheal tube connector.6. Apparatus for identifying a blockage in an inserted endotracheal tube comprising apparatus as claimed in any one of claims 1 to 4, wherein the endotracheal tube is connected to the sound-emitting device by means of a connector attachable via a catheter mount to a ventilator, whereby, in use, blockage of the endotracheal tube results in operation of the signalling device.7. Apparatus as claimed in claim 6, wherein a pressure-control valve is provided to prevent air-flow through the signalling device during ventilation of a patient' s lungs.8. Apparatus for identifying tracheal intubation substantially as herein described with reference to Figures 1 and 2 of the accompanying drawings.9. Apparatus for identifying a blockage in an inserted endotracheal tube substantially as herein described with reference to Figures 2 and 3 of the accompanying drawings.10. A method of identifying tracheal intubation using the apparatus as claimed in any one of claims 1 to 5, or claim 8.11. A method of identifying a blockage in an inserted endotracheal tube using the apparatus as claimed in claims 6, 7 or 8.1. Apparatus for identifying tracheal intubation comprising an endotracheal tube and an air-flow signalling device connected thereto, so that on correct insertion of the tube into the trachea flow of air from the lungs causes the signalling device to emit an audible signal
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9204486A GB2264869A (en) | 1992-03-02 | 1992-03-02 | Apparatus for identifying tracheal intubation or tracheal tube blockage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9204486A GB2264869A (en) | 1992-03-02 | 1992-03-02 | Apparatus for identifying tracheal intubation or tracheal tube blockage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB9204486D0 GB9204486D0 (en) | 1992-04-15 |
| GB2264869A true GB2264869A (en) | 1993-09-15 |
Family
ID=10711347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9204486A Withdrawn GB2264869A (en) | 1992-03-02 | 1992-03-02 | Apparatus for identifying tracheal intubation or tracheal tube blockage |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2264869A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2341101A (en) * | 1998-09-02 | 2000-03-08 | Smiths Industries Plc | A breathing indicator device |
| CN104043174A (en) * | 2014-07-07 | 2014-09-17 | 赵泽宇 | Lengthened fracturing resistant and pressing resistant type trachea cannula with expansion end |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4879999A (en) * | 1986-03-26 | 1989-11-14 | Board Of Regents, The University Of Texas System | Device for the determination of proper endotracheal tube placement |
-
1992
- 1992-03-02 GB GB9204486A patent/GB2264869A/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4879999A (en) * | 1986-03-26 | 1989-11-14 | Board Of Regents, The University Of Texas System | Device for the determination of proper endotracheal tube placement |
| US4879999B1 (en) * | 1986-03-26 | 1996-02-06 | Nellcor Inc | Device for the determination of proper endotracheal tube placement |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2341101A (en) * | 1998-09-02 | 2000-03-08 | Smiths Industries Plc | A breathing indicator device |
| US6378522B1 (en) | 1998-09-02 | 2002-04-30 | Smiths Industries Public Limited | Respiration assemblies and indicators |
| GB2341101B (en) * | 1998-09-02 | 2003-01-22 | Smiths Industries Plc | Respiration assemblies and indicators |
| CN104043174A (en) * | 2014-07-07 | 2014-09-17 | 赵泽宇 | Lengthened fracturing resistant and pressing resistant type trachea cannula with expansion end |
Also Published As
| Publication number | Publication date |
|---|---|
| GB9204486D0 (en) | 1992-04-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1551277B1 (en) | Endotracheal tube with an imaging sensor | |
| US5620004A (en) | Airway indicator device | |
| US5487731A (en) | Esophageal intubation detector with indicator | |
| US9211060B2 (en) | Visualization device and holder for use with a tracheal tube | |
| US5400771A (en) | Endotracheal intubation assembly and related method | |
| EP0768903B1 (en) | A fibreoptic intubating laryngeal mask airway | |
| US20060162730A1 (en) | Video-assisted laryngeal mask airway devices | |
| US10071214B2 (en) | Leak detection system and method for tube or catheter placement | |
| US5295489A (en) | Endotracheal tube/stethoscope/thermistor combination | |
| US20120116156A1 (en) | Method and apparatus for automatic verification of endotracheal intubation | |
| CA2191748A1 (en) | Interlocked plastic-encased concrete pipe | |
| US4796617A (en) | Tracheostomy tube assembly | |
| US20020074002A1 (en) | Detecting device for correct endotracheal intubation | |
| GB2354950A (en) | Laryngeal mask assembly | |
| GB2264869A (en) | Apparatus for identifying tracheal intubation or tracheal tube blockage | |
| KR102629693B1 (en) | Intubation assistance apparatus based on CO2 partial pressure measurement | |
| CN201324424Y (en) | Airflow pronouncing joint and airway device therewith | |
| CN211299979U (en) | Straight type multi-cavity high-frequency medical whistle assisting in judging position of connecting pipe conduit | |
| WO2025101081A1 (en) | Resuscitation assembly | |
| Coaldrake | Capnography does not always indicate successful intubation | |
| SK393791A3 (en) | Removable catheter of distal end of endotracheal tube |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |