Patient interface with respiratory gas measurement component

• US 20060249160A1
• Filed: 05/03/2006
• Published: 11/09/2006
• Est. Priority Date: 05/06/2005
• Status: Active Grant

• Current Assignee: RIC INVESTMENTS LLC (Koninklijke Philips N.V.)
• Original Assignee: RIC INVESTMENTS LLC (Koninklijke Philips N.V.)
• Inventors: Scarberry, Eugene N., Ho, Peter Chi Fai, Jaffe, Michael B.
• Granted Patent: US 7,568,483 B2
• Time in Patent Office: Days
• US Class Current: 128/207.130
• CPC Class Codes: A61B 5/0836 Measuring rate of CO2 production
• CPC Class Codes: A61B 5/097 Devices for facilitating collection of breath or for directing breath into or through measuring devices
• CPC Class Codes: A61B 5/6803 Head-worn items, e.g. helmets, masks, headphones or goggles
• CPC Class Codes: A61M 16/06 Respiratory or anaesthetic masks
• CPC Class Codes: A61M 16/0633 with forehead support
• CPC Class Codes: A61M 16/0683 Holding devices therefor
• CPC Class Codes: A61M 16/0825 with ball-sockets
• CPC Class Codes: A61M 16/085 Gas sampling
• CPC Class Codes: A61M 16/0858 Pressure sampling ports
• CPC Class Codes: A61M 2205/0216 Materials providing elastic properties, e.g. for facilitating deformation and avoid breaking
• CPC Class Codes: A61M 2205/3569 sublocal, e.g. between console and disposable
• CPC Class Codes: A61M 2230/43 Composition of exhalation
• CPC Class Codes: A61M 2230/432 partial CO2 pressure (P-CO2)

Abstract

A patient interface assembly for use with gas monitoring. The patient interface includes a mask shell having a portion that seals against the face of a patient and a mask attachment coupled to an opening of the shell. The mask attachment has a mask connection section coupled to the opening of the shell, an airway adapter section that serves as a gas measurement site for use in measuring a respiratory variable, and a breathing system connection section adapted to be coupled to a to a patient circuit. The gas measurement site, which includes a window, may be disposed on the conduit, the shell, or both. An access port, defined in the mask, the mask attachment, or both permits a sampling tube to be placed in fluid communication with an airway of a patient.

Claims

1. A patient interface assembly comprising:

(a) a shell having a first opening and a second opening;

(b) a seal comprising;

(1) a first end portion coupled to the second opening of the shell, and

(2) a second end portion for sealing engagement with a face of a patient; and

(c) a mask attachment coupled to the first opening of the shell and comprising;

(1) a mask connection section having a first opening adapted to be coupled to the first opening of the shell and a second opening,

(2) an airway adapter section adapted for use in measuring a respiratory variable, wherein the airway adapter section includes a first opening adapted to be coupled to the second opening of the mask connection section and a second opening, and

(3) a breathing system connection section having a first opening adapted to be coupled to the second opening of the airway adapter section and a second opening adapted to be coupled to a patient circuit.

2. The patient interface assembly of claim 1, wherein the airway adapter section further comprises an infrared-transparent portion, at least one window, or both.

3. The patient interface assembly of claim 1, wherein the mask connection section is rotateably coupled to the shell.

4. The patient interface assembly of claim 1, further comprising an access port defined in shell, the mask connection section, or both.

5. The patient interface assembly of claim 4, wherein the access port is generally aligned with the first opening of the shell.

6. The patient interface assembly of claim 4, further comprising a cap adapted to selectively block the access port.

7. The patient interface assembly of claim 1, further comprising a transducer adapted to be coupled to the airway adapter section to measure such a respiratory variable.

8. The patient interface assembly of claim 1, wherein the airway adapter section is rotateably coupled to the breathing system connection section.

9. The patient interface assembly of claim 1, further comprising an entrainment valve disposed in the mask connection section.

10. A patient interface assembly comprising:

(a) a shell having a first opening and a second opening;

(b) a seal comprising;

(1) a first end portion coupled to the second opening of the shell,

(2) a second end portion adapted to contact a face of a patient; and

(c) a conduit coupled to the shell; and

(d) a gas measurement site disposed on the conduit, the shell, or both, wherein the gas measuring site includes a window.

11. The patient interface assembly of claim 10, wherein the conduit is rotateably coupled to the shell.

12. The patient interface assembly of claim 10, further comprising an access port defined conduit, the shell, or both.

13. The patient interface assembly of claim 12, wherein the access port is generally aligned with the first opening of the shell.

14. The patient interface assembly of claim 10, wherein the gas measurement site comprises an infrared-transparent portion, at least one window, or both

15. The patient interface assembly of claim 10, further comprising a transducer adapted to be coupled to the gas measurement site to measure a respiratory variable.

16. A respiratory gas analysis system comprising:

a mask having an opening;

a mask attachment operably coupled to the opening in the mask, wherein an access port is defined in the mask, the mask attachment, or both;

a sampling tube in fluid communication with an airway of a patient through the access port;

a transducer secured to the sampling tube; and

a processor in communication with the transducer, wherein the processor calculates at least one respiratory parameter using a signal from the transducer.

17. The respiratory gas analysis system of claim 16, wherein the mask attachment is rotateably coupled to the mask.

18. The respiratory gas analysis system of claim 16, further comprising a gas collection adapter coupled to the mask attachment wherein the access port is defined in the gas collection adapter, and wherein the sampling tube is secured to the gas collection adapter.

19. A method of sidestream respiratory gas analysis, comprising:

applying a mask assembly to a patient, wherein the mask assembly includes a mask and a mask attachment directly coupled to the mask;

placing a sampling tube in fluid communication with an airway of a patient by passing the sampling through a portion of the mask attachment;

communicating a flow of gas from such a patient via the sampling tube to a sidestream gas measurement assembly; and

analyzing the at least one parameter using the sidestream gas measurement assembly.

20. The method of claim 19, wherein analyzing the at least one parameter comprises analyzing at least one gas or vaporized material present in the flow of gas, analyzing an amount of carbon dioxide in the flow of gas, or both.