PASSIVE NASAL PEEP DEVICES

• US 20140128761A1
• Filed: 11/04/2013
• Published: 05/08/2014
• Est. Priority Date: 12/08/2004
• Status: Active Grant

• Current Assignee: Benjamin K. Cline, Frank W. Wang, Rajiv Doshi, Ronald G. French, Ryan K. Pierce
• Original Assignee: Rajiv Doshi, Ronald G. French, Ryan K. Pierce
• Inventors: DOSHI, Rajiv, CLINE, Benjamin K., FRENCH, Ronald G., WANG, Frank W., PIERCE, Ryan K.
• Granted Patent: US 10,610,228 B2
• Time in Patent Office: Days
• US Class Current: 600/538
• CPC Class Codes: A61B 17/12104 in an air passage
• CPC Class Codes: A61B 5/0871 Peak expiratory flowmeters
• CPC Class Codes: A61B 5/097 Devices for facilitating collection of breath or for directing breath into or through measuring devices
• CPC Class Codes: A61F 5/08 Devices for correcting deformities of the nose ; Devices for enlarging the nostril, e.g. for breathing improvement
• CPC Class Codes: A61F 5/56 Devices for preventing snoring by influencing the respiratory system by gas treatment A61M16/00
• CPC Class Codes: A61M 15/08 Inhaling devices inserted into the nose
• CPC Class Codes: A61M 16/06 Respiratory or anaesthetic masks
• CPC Class Codes: A61M 16/0666 Nasal cannulas or tubing devices for improving normal breathing through the nose A61F5/08; nose filters A62B23/06; outside holding devices A61M25/02
• CPC Class Codes: A61M 16/0683 Holding devices therefor
• CPC Class Codes: A61M 16/208 Non-controlled one-way valves, e.g. exhalation, check, pop-off non-rebreathing valves
• CPC Class Codes: A61M 2210/0618 Nose

Abstract

Described herein are passive nasal respiratory devices, in particular, passive nasal respiratory devices configured to achieve positive end-expiratory pressure (PEEP) in a subject wearing the device. PEEP devices may have a threshold pressure for opening during expiration. These devices may include a flap valve that opens on inhalation nested with a spring valve that opens when exhalation pressure exceeds a predetermined threshold. The device may be configured to be comfortably worn by a sleeping subject.

Claims

1. A nasal respiratory device for inducing positive end-expiratory pressure that is configured to be worn in communication with a subject'"'"'s nose, the device comprising:

an opening;

a first passive airflow resistor in communication with the opening, wherein the first passive airflow resistor is configured to open during inhalation, and substantially close during exhalation;

a second passive airflow resistor that is configured to open during exhalation from a closed position when expiratory pressure is greater than a non-zero threshold pressure, so that the second passive airflow resistor opens when the pressure across the airflow resistor exceeds the threshold pressure for opening during expiration; and

a holdfast configured to adhesively secure the device in communication with the subject'"'"'s nose without covering the subject'"'"'s mouth.

2. The device of claim 1, wherein the first passive airflow resistor is a flap valve.

3. The device of claim 1, wherein the first passive airflow resistor is a plurality of flap valves.

4. The device of claim 1, wherein the second passive airflow resistor is nested relative to the first passive airflow resistor.

5. The device of claim 1, wherein the second passive airflow resistor includes a biasing element preventing opening below a threshold level.

6. The device of claim 5, wherein the biasing element is a spring.

7. The device of claim 1, wherein the holdfast is configured to secure the device over both of a subject'"'"'s nostrils.

8. The device of claim 1, wherein the opening is formed through a housing.

9. The device of claim 8, wherein the housing houses the first passive airflow device and the second passive airflow device.

10. The device of claim 1, wherein the second passive airflow device comprises a piston member configured to be displaced by expiratory pressure above the threshold.

11. The device of claim 1, wherein the threshold pressure is between about 1 cm H₂O and about 20 cm H₂O.

12. The device of claim 1, further comprising a nasal airflow monitor to measure nasal airflow.

13. The device of claim 12, wherein the nasal airflow monitor comprises a cannula attachment configured to couple to a nasal cannula.

14. A nasal respiratory device for inducing positive end-expiratory pressure that is configured to be worn in communication with a subject'"'"'s nose, the device comprising:

a housing forming an opening;

a first airflow resistor within the housing and configured to open during inhalation through the opening and close during exhalation through the opening;

a second airflow resistor within the housing wherein the second airflow resistor is configured to have a non-zero threshold pressure for opening from a closed position during expiration through the opening, so that the airflow resistor opens when the pressure across the airflow resistor exceeds the threshold pressure for opening during expiration; and

an adhesive holdfast extending from the housing and configured to secure the housing in communication with the subject'"'"'s nose without covering the subject'"'"'s mouth.