Nasal ventilation interface

• US 6,478,026 B1
• Filed: 03/13/2000
• Issued: 11/12/2002
• Est. Priority Date: 03/13/1999
• Status: Expired due to Term

• Current Assignee: Salter Labs, LLC
• Original Assignee: Innomed Technologies Incorporated (SunMed Group Holdings LLC)
• Inventors: Wood, Thomas J.
• Primary Examiner(s): Weiss, John G.
• Assistant Examiner(s): Mitchell, Teena
• Application Number:
  US09/524,371
• Time in Patent Office: 974 Days
• Field of Search: 128/207.18, 128/207.13, 128/207.12, 128/203.29, 128/204.12, 128/204.26, 128/205.27, 128/205.29, 128/206.11, 128/206.15, 128/206.18, 600/529, 600/538, 600/532
• US Class Current: 128/207.18
• 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 16/101 using an oxygen concentrator
• CPC Class Codes: A61M 16/1045 Devices for humidifying or heating the inspired gas by using recovered moisture or heat from the expired gas
• CPC Class Codes: A61M 16/1055 bacterial
• CPC Class Codes: A61M 16/106 in a path
• CPC Class Codes: A61M 16/208 Non-controlled one-way valves, e.g. exhalation, check, pop-off non-rebreathing valves

Abstract

A nasal ventilation interface comprising a hollow body having at least one and preferably two nasal apertures, and at least one and preferably two inhale apertures, and at least one and preferably two nasal insert tubes each associated with one of the nasal apertures and having an annular sleeve that forms a seal with a nostril of the patient. The hollow body has at least one and preferably two exhale apertures and at least one valve assembly associated with the exhale apertures that is capable of preventing air from passing through the exhale aperture upon the patient inhaling and allowing air to pass through the exhale aperture upon exhaling. The hollow body may also have at least one and preferably two filters for retaining heat and moisture from the exhale air and transferring the retained heat and moisture into the inhale air.

Claims

1. A nasal ventilation interface, comprising:

a) at least one hollow body having at least one nasal aperture defined therein and at least one inhale aperture defined therein;

b) at least one nasal insert tube associated with each nasal aperture of said body and capable of being inserted into a nostril of a patient, each nasal insert tube having at least one annular sleeve with a contact surface formed thereon and with a diameter that is greater than a diameter of said nasal insert tube, each annular sleeve contact surface capable of forming a seal with the nostril of the patient;

c) at least one exhale aperture defined in said body and at least one valve assembly associated with said body, said at least one valve assembly being capable of preventing air from passing through said exhale aperture upon the patient inhaling and allowing air to pass through said exhale aperture upon exhaling;

d) at least one first valve member having a first end and having a second end pivotally attached to a first inner wall of said body between said nasal aperture and said exhale aperture; and

e) at least one second valve member having a first end and having a second end pivotally attached to a second inner wall of said body opposite said first inner wall and between said exhale aperture and said inhale aperture, said first valve member second end and said second valve member second end capable of abutting each other.

2. The nasal ventilation interface of claim 1, wherein said first valve member has at least one perforation defined therein with at least one biased closure member associated therewith such that air may pass through said perforation in one direction only, and said second valve member is made of a non-perforated material.

3. The nasal ventilation interface of claim 1, wherein said second valve member may pivot to a first position substantially covering said exhale aperture in response to a force thereon from inhaling air through said inhale aperture and said first valve member may pivot to a first position in response to said pivoting of said second valve member, and said first valve member may pivot to a second position in response to a force from exhaling air through said nasal aperture and said second valve member may pivot to a second position in response to said pivoting of said first valve member.

4. The nasal ventilation interface of claim 3, further comprising at least one first stop arranged within said body wherein said first stop limits said pivoting motion of said first valve member to said first position, and at least one second stop arranged within said body wherein said second stop limits said pivoting motion of said second valve member to said second position.

5. The nasal ventilation interface of claim 3, wherein said first valve member has an angled second end and said second valve member has a yoke formed on said second end thereof that receives said first valve member second end when said first valve member and said second valve member are pivoted to said first positions.

6. The nasal ventilation interface of claim 1, further comprising at least one filter associated with said body.

7. The nasal ventilation interface of claim 6, wherein said filter comprises a material capable of retaining matter selected from the group consisting of heat, moisture, dust, allergens, pollen, bacteria, viruses, and pathogens.

8. A nasal ventilation interface, comprising:

a) at least one hollow body having at least one nasal aperture defined therein and at least one inhale aperture defined therein;

b) at least one nasal insert tube associated with each nasal aperture of said body and capable of being inserted into a nostril of a patient, each nasal insert tube having at least one annular sleeve with a contact surface formed thereon and with a diameter that is greater than a diameter of said nasal insert tube, each annular sleeve contact surface capable of forming a seal with the nostril of the patient;

c) at least one exhale aperture defined in said body; and

d) at least one valve assembly associated with said body, said at least one valve assembly including at least one one-way inhale valve membrane arranged in said body between said nasal aperture and said exhale aperture or disposed within said inhale aperture and at least one one-way exhale valve membrane disposed within said exhale aperture, said at least one one-way inhale valve membrane and said at least one one-way exhale valve membrane each has at least one perforation defined therein with at least one biased closure member associated therewith such that air may pass through said perforation in one direction only;

whereby, said at least one valve assembly is capable of preventing air from passing through said exhale aperture upon the patient inhaling and allowing air to pass through said exhale aperture upon exhaling.

9. The nasal ventilation interface of claim 8, further comprising at least one filter associated with said body.

10. The nasal ventilation interface of claim 9, wherein said filter comprises a material capable of retaining matter selected from the group consisting of heat, moisture, dust, allergens, pollen, bacteria, viruses, and pathogens.