CA2446445A1 - Portable pressure transducer, pneumotach for use therewith, and associated methods - Google Patents
Portable pressure transducer, pneumotach for use therewith, and associated methods Download PDFInfo
- Publication number
- CA2446445A1 CA2446445A1 CA002446445A CA2446445A CA2446445A1 CA 2446445 A1 CA2446445 A1 CA 2446445A1 CA 002446445 A CA002446445 A CA 002446445A CA 2446445 A CA2446445 A CA 2446445A CA 2446445 A1 CA2446445 A1 CA 2446445A1
- Authority
- CA
- Canada
- Prior art keywords
- pressure
- conduit
- airway adapter
- transducer
- respiratory
- 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.)
- Granted
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L13/00—Devices or apparatus for measuring differences of two or more fluid pressure values
-
- 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
- A61B5/087—Measuring breath flow
Abstract
A system for sensing respiratory pressure includes a portable pressure transducer (50) configured to be carried by or proximate to a respiratory conduit, such as a breathing circuit or a nasal canula. The portable pressure transducer (50) may removably couple with a pneumotach (20), in the form of an airway adapter, disposed along the respiratory conduit. The pneumotach may include two pressure ports (24, 34) positioned at opposite sides of an obstruction, which partially blocks flow through a primary conduit of the pneumotach (20). Corresponding sample conduits (55, 56) of the portable pressure transducer (50) removably couple with the pressure ports (24, 34).
The pressure ports (24, 34) may have sealing elements which are configured to seal against piercing members of the sample conduits (55, 65) upon introduction of the piercing members therethrough. Upon removal of the piercing members, the sealing elements substantially reseal. Methods for using the system are also disclosed.
The pressure ports (24, 34) may have sealing elements which are configured to seal against piercing members of the sample conduits (55, 65) upon introduction of the piercing members therethrough. Upon removal of the piercing members, the sealing elements substantially reseal. Methods for using the system are also disclosed.
Claims (35)
1. An airway adapter, comprising:
first and second ends configured to be coupled to respective portions of a respiratory conduit;
and a pneumotach between said first and second ends and including:
a primary conduit positioned along a pathway of said respiratory conduit;
an obstruction positioned to partially block flow of gases through said primary conduit;
at least two pressure ports positioned with at least a portion of said obstruction therebetween, said at least two pressure ports being configured to removably receive corresponding features of a portable pressure transducer; and sealing elements across openings of said at least two pressure ports.
first and second ends configured to be coupled to respective portions of a respiratory conduit;
and a pneumotach between said first and second ends and including:
a primary conduit positioned along a pathway of said respiratory conduit;
an obstruction positioned to partially block flow of gases through said primary conduit;
at least two pressure ports positioned with at least a portion of said obstruction therebetween, said at least two pressure ports being configured to removably receive corresponding features of a portable pressure transducer; and sealing elements across openings of said at least two pressure ports.
2. The airway adapter of claim 1, wherein said sealing elements are configured to receive and seal against outer surfaces of piercing members of said portable pressure transducer.
3. The airway adapter of claim 2, wherein said sealing elements are further configured to substantially reseal upon removal of said piercing members therefrom.
4. The airway adapter of claim 1, wherein each of said sealing elements comprises a soft, resilient elastomeric material.
5. The airway adapter of claim 4, wherein said soft, resilient elastomeric material comprises at least one of latex and silicone.
6. An airway adapter, comprising:
first and second ends configured to be coupled to respective portions of a respiratory conduit;
and a pneumotach between said first and second ends and including:
a primary conduit positioned along a pathway of said respiratory conduit;
an obstruction positioned to partially block flow of gases through said primary conduit; and at least two pressure ports positioned with at least a portion of said obstruction therebetween, said at least two pressure ports comprising a hollow piercing member and being configured to removably receive corresponding features of a portable pressure transducer.
first and second ends configured to be coupled to respective portions of a respiratory conduit;
and a pneumotach between said first and second ends and including:
a primary conduit positioned along a pathway of said respiratory conduit;
an obstruction positioned to partially block flow of gases through said primary conduit; and at least two pressure ports positioned with at least a portion of said obstruction therebetween, said at least two pressure ports comprising a hollow piercing member and being configured to removably receive corresponding features of a portable pressure transducer.
7. The airway adapter of claim 1 or 6, wherein each pressure port of said at least two pressure ports is configured to matingly engage said corresponding feature of said portable pressure transducer.
8. An airway adapter, comprising:
first and second ends configured to be coupled to respective portions of a respiratory conduit;
a pneumotach between said first and second ends and including:
a primary conduit positioned along a pathway of said respiratory conduit;
an obstruction positioned to partially block flow of gases through said primary conduit;
at least two pressure ports positioned with at least a portion of said obstruction therebetween, said at least two pressure ports being configured to removably receive corresponding features of a portable pressure transducer; and at least one material sensing element.
first and second ends configured to be coupled to respective portions of a respiratory conduit;
a pneumotach between said first and second ends and including:
a primary conduit positioned along a pathway of said respiratory conduit;
an obstruction positioned to partially block flow of gases through said primary conduit;
at least two pressure ports positioned with at least a portion of said obstruction therebetween, said at least two pressure ports being configured to removably receive corresponding features of a portable pressure transducer; and at least one material sensing element.
9. The airway adapter of claim 8, wherein said at least one material sensing element comprises an infrared-type sensing element.
10. The airway adapter of claim 9, wherein said infrared-type sensing element comprises a pair of windows positioned at opposite sides of said primary conduit.
11. The airway adapter of claim 8, wherein said at least one material sensing element comprises a luminescence-quenching type sensing element.
12. The airway adapter of claim 11, wherein said luminesence-quenching type sensing element comprises at least one window and a luminescable material exposed through said at least one window.
13. The airway adapter of claim 8, further comprising:
a seating element to ensure proper orientation of a complementarily configured transducer upon coupling thereof with the airway adapter.
a seating element to ensure proper orientation of a complementarily configured transducer upon coupling thereof with the airway adapter.
24. The airway adapter of claim 8, further comprising at least one of:
a sealing element across an opening of at least one of said at least two pressure points; and a hollow piercing member at an end of at least one of said at least two pressure ports.
a sealing element across an opening of at least one of said at least two pressure points; and a hollow piercing member at an end of at least one of said at least two pressure ports.
15. A transducer of a pressure sensing system, comprising:
a housing configured to be carried upon a respiratory conduit;
at least one sample conduit at least partially within said housing and including a hollow piercing member configured to couple with a corresponding feature of an airway adapter positioned along said respiratory conduit and to thereby communicate with said respiratory conduit; and at least one pressure sensor within said housing and inflow communication with said at least one sample conduit.
a housing configured to be carried upon a respiratory conduit;
at least one sample conduit at least partially within said housing and including a hollow piercing member configured to couple with a corresponding feature of an airway adapter positioned along said respiratory conduit and to thereby communicate with said respiratory conduit; and at least one pressure sensor within said housing and inflow communication with said at least one sample conduit.
16. The transducer of claim 15, wherein said at least one sample conduit comprises at least two sample conduits configured to be removably coupled with corresponding features of an airway adapter positioned along the respiratory conduit.
17. The transducer of Claim 16, wherein said at least one pressure sensor communicates with each of said at least two sample conduits.
18. The transducer of claim 17, wherein said at least one pressure sensor comprises a differential pressure sensor.
19. The transducer of claim 16, wherein each of said at least two sample conduits comprises a piercing member for piercing a corresponding feature of said airway adapter.
20. The transducer of claim 16, wherein each of said at least two sample conduits comprises a coupling end configured to matingly engage a corresponding feature of said airway adapter.
21. A transducer of a pressure sensing system, comprising:
a housing configured to be carried upon a respiratory conduit;
at least one sample conduit at least partially within said housing and including a coupling end configured to be pierced by and seal against a corresponding feature of an airway adapter so as to communicate with said respiratory conduit; and at least one pressure sensor within said housing and in flow communication with said at least one sample conduit.
a housing configured to be carried upon a respiratory conduit;
at least one sample conduit at least partially within said housing and including a coupling end configured to be pierced by and seal against a corresponding feature of an airway adapter so as to communicate with said respiratory conduit; and at least one pressure sensor within said housing and in flow communication with said at least one sample conduit.
22. A transducer of a pressure sensing system, comprising:
a housing configured to be carried upon a respiratory conduit;
at least one sample conduit at least partially within said housing and configured to communicate with said respiratory conduit by piercing or being pierced by a corresponding feature of an airway adapter positioned along said respiratory conduit;
at least one pressure sensor within said housing and in flow communication with said at least one sample conduit; and a gauge pressure sensor in communication with an environment external to said housing.
a housing configured to be carried upon a respiratory conduit;
at least one sample conduit at least partially within said housing and configured to communicate with said respiratory conduit by piercing or being pierced by a corresponding feature of an airway adapter positioned along said respiratory conduit;
at least one pressure sensor within said housing and in flow communication with said at least one sample conduit; and a gauge pressure sensor in communication with an environment external to said housing.
23. The transducer of claim 22, wherein said gauge pressure sensor comprises a differential pressure sensor.
24. A respiratory pressure sensing system, comprising:
an airway adapter of any of claims 1-14 configured to be positioned along a respiratory conduit; and a pressure transducer of any of claims 15-23 configured to be removably coupled with said pneumotach..
an airway adapter of any of claims 1-14 configured to be positioned along a respiratory conduit; and a pressure transducer of any of claims 15-23 configured to be removably coupled with said pneumotach..
25. A method for monitoring at least a pressure of an individual's respiration, comprising:
positioning an airway adapter comprising a pneumotach along a respiratory conduit configured for communication with the individual's airway; and assembling a pressure transducer substantially directly with at least said pneumotach, including piercing sealing elements associated with pressure ports of said pneumotach with coupling ends of said sample conduits of said pressure transducer.
positioning an airway adapter comprising a pneumotach along a respiratory conduit configured for communication with the individual's airway; and assembling a pressure transducer substantially directly with at least said pneumotach, including piercing sealing elements associated with pressure ports of said pneumotach with coupling ends of said sample conduits of said pressure transducer.
26. The method of claim 25, wherein said assembling comprises aligning and temporarily establishing communication between coupling ends of sample conduits of said pressure transducer with corresponding pressure ports of said pneumotach.
27. The method of claim 26, wherein said temporarily establishing comprises introducing said coupling ends through sealing elements associated with said corresponding pressure ports.
28. The method of claim 26, wherein said temporarily establishing comprises matingly engaging said coupling ends and said corresponding pressure ports.
29. The method of claim 26, wherein said temporarily establishing comprises establishing communication that will withstand a pressure of up to about 150 mm Hg.
30. The method of claim 25, further comprising:
evaluating a respiratory sample to determine a pressure thereof.
evaluating a respiratory sample to determine a pressure thereof.
31. The method of claim 30, wherein said evaluating comprises evaluating a pressure differential.
32. The method of claim 30, further comprising:
establishing a baseline pressure.
establishing a baseline pressure.
33. The method of claim 30, further comprising:
transmitting a signal representative of said pressure from said pressure transducer to a monitor.
transmitting a signal representative of said pressure from said pressure transducer to a monitor.
34. The method of claim 33, further comprising:
calculating at least one of a respiratory pressure parameter, a respiratory flow parameter, a respiratory volume parameter, a blood gas parameter, and a blood flow parameter.
calculating at least one of a respiratory pressure parameter, a respiratory flow parameter, a respiratory volume parameter, a blood gas parameter, and a blood flow parameter.
35. The method of claim 25, further comprising:
disassembling said pressure transducer from said pneumotach.
disassembling said pressure transducer from said pneumotach.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2694444A CA2694444C (en) | 2001-05-07 | 2002-05-07 | Portable pressure transducer, pneumotach for use therewith, and associated methods |
| CA2694414A CA2694414C (en) | 2001-05-07 | 2002-05-07 | Portable pressure transducer, pneumotach for use therewith, and associated methods |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US28954001P | 2001-05-07 | 2001-05-07 | |
| US60/289,540 | 2001-05-07 | ||
| PCT/US2002/014392 WO2002089920A2 (en) | 2001-05-07 | 2002-05-07 | Portable pressure transducer, pneumotach for use therewith, and associated methods |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2694444A Division CA2694444C (en) | 2001-05-07 | 2002-05-07 | Portable pressure transducer, pneumotach for use therewith, and associated methods |
| CA2694414A Division CA2694414C (en) | 2001-05-07 | 2002-05-07 | Portable pressure transducer, pneumotach for use therewith, and associated methods |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2446445A1 true CA2446445A1 (en) | 2002-11-14 |
| CA2446445C CA2446445C (en) | 2010-07-20 |
Family
ID=23111977
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2694444A Expired - Lifetime CA2694444C (en) | 2001-05-07 | 2002-05-07 | Portable pressure transducer, pneumotach for use therewith, and associated methods |
| CA2446445A Expired - Lifetime CA2446445C (en) | 2001-05-07 | 2002-05-07 | Portable pressure transducer, pneumotach for use therewith, and associated methods |
| CA2694414A Expired - Lifetime CA2694414C (en) | 2001-05-07 | 2002-05-07 | Portable pressure transducer, pneumotach for use therewith, and associated methods |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2694444A Expired - Lifetime CA2694444C (en) | 2001-05-07 | 2002-05-07 | Portable pressure transducer, pneumotach for use therewith, and associated methods |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2694414A Expired - Lifetime CA2694414C (en) | 2001-05-07 | 2002-05-07 | Portable pressure transducer, pneumotach for use therewith, and associated methods |
Country Status (9)
| Country | Link |
|---|---|
| US (5) | US6691579B2 (en) |
| EP (1) | EP1387636B1 (en) |
| JP (1) | JP4159884B2 (en) |
| AT (1) | ATE402653T1 (en) |
| AU (1) | AU2002305428B2 (en) |
| BR (1) | BR0209492B1 (en) |
| CA (3) | CA2694444C (en) |
| DE (1) | DE60227939D1 (en) |
| WO (1) | WO2002089920A2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8172765B2 (en) | 2004-05-04 | 2012-05-08 | Dalhousie University | Method of assessment of airway variability in airway hyperresponsiveness |
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| US8172765B2 (en) | 2004-05-04 | 2012-05-08 | Dalhousie University | Method of assessment of airway variability in airway hyperresponsiveness |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2694414C (en) | 2014-07-08 |
| CA2694414A1 (en) | 2002-11-14 |
| US20100106040A1 (en) | 2010-04-29 |
| US20060117856A1 (en) | 2006-06-08 |
| CA2694444C (en) | 2014-04-01 |
| DE60227939D1 (en) | 2008-09-11 |
| CA2694444A1 (en) | 2002-11-14 |
| EP1387636A2 (en) | 2004-02-11 |
| US6968741B2 (en) | 2005-11-29 |
| ATE402653T1 (en) | 2008-08-15 |
| JP4159884B2 (en) | 2008-10-01 |
| AU2002305428B2 (en) | 2007-11-08 |
| BR0209492A (en) | 2004-07-06 |
| WO2002089920A3 (en) | 2003-05-01 |
| WO2002089920A2 (en) | 2002-11-14 |
| US20020162397A1 (en) | 2002-11-07 |
| US20040118212A1 (en) | 2004-06-24 |
| US7654146B2 (en) | 2010-02-02 |
| JP2004532077A (en) | 2004-10-21 |
| BR0209492B1 (en) | 2011-05-03 |
| EP1387636B1 (en) | 2008-07-30 |
| US20070261498A1 (en) | 2007-11-15 |
| US6691579B2 (en) | 2004-02-17 |
| CA2446445C (en) | 2010-07-20 |
| US7174789B2 (en) | 2007-02-13 |
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