CPAP nose mask

• US 5,746,201 A
• Filed: 01/23/1997
• Issued: 05/05/1998
• Est. Priority Date: 01/23/1997
• Status: Expired due to Term

• Current Assignee: Nellcor Puritan Bennett LLC (Medtronic Plc)
• Original Assignee: Nellcor Puritan-Bennett
• Inventors: Kidd, Lisa A.
• Primary Examiner(s): Lewis, Aaron J.
• Assistant Examiner(s): SRIVASTAVA, VIRENDRA KUMAR
• Application Number:
  US08/786,886
• Time in Patent Office: 467 Days
• Field of Search: 128/207.13, 128/206.21, 128/206.24, 128/204.18, 128/204.23, 128/205.25, 128/206.18, 128/206.17
• US Class Current: 128/206.24
• CPC Class Codes: A61M 16/06 Respiratory or anaesthetic masks
• CPC Class Codes: A61M 16/0616 with face sealing means comprising a flap or membrane projecting inwards, such that sealing increases with increasing inhalation gas pressure
• CPC Class Codes: A61M 2210/0618 Nose
• CPC Class Codes: A62B 18/025 Halfmasks A62B23/02 takes precedence; surgical face masks A41D13/11

Abstract

A comfortable, leak-resistant CPAP nose mask (10) is provided having a soft, resilient, synthetic resin body (12) and an air source connection fitting (14). The body (12) presents an internal nose-receiving cavity (20) as well as a generally triangular nose entrance opening (16) and a spaced, opposed, inhale/exhale opening (18); the openings (16,18) are in communication with the cavity (20). The entrance opening (16) is defined by a circumscribing flange (20) and an inboard, pliable, inwardly extending, sealing lip (32). A metallic, deformable, shape-retaining reinforcing member (42) is secured to the outer surface of the flange (22) and extends over the bridge (24) and sidewall regions (26, 28) of the flange (22). The member (42) can be readily shaped so as to accommodate the shape and contour of the user'"'"'s nose and face.

Claims

1. A nose mask for receiving a patient'"'"'s nose and engaging the patient'"'"'s nose and face, said mask comprising a hollow body including wall structure defining an internal nose-receiving cavity, a nose entrance opening and a spaced inhale/exhale opening, said openings in communication with said cavity, said entrance opening-defining structure having a peripheral flange for directly engaging the top of a patient'"'"'s nose, the sides of the patient'"'"'s nose and the cheek regions adjacent the nose, and the patient'"'"'s upper lip area beneath the nose, and a thin, pliable lip inboard of said flange and extending into said nose entrance opening, said lip being configured for facilitating a seal between said mask body and the patient'"'"'s nose and face to minimize leakage of positive pressure gas from the nose mask, said flange and lip, at the areas thereof engaging the top of the patient'"'"'s nose and the sides of the patient'"'"'s nose and the cheek regions adjacent the nose and diverging from each other, said nose entrance opening being generally tria-ngular in configuration, said range and lip each having a pair of oblique, downwardly extending sidewall portions said lip sidewall portions being thinner and more pliable than said flange sidewall portions.

2. The mask of claim 1, said body being integral and formed of pliable synthetic resin material.

3. The mask of claim 1, said inhale/exhale opening being located in opposed relationship to said nose entrance opening, there being a fitting disposed within said inhale/exhale opening for connection of a positive pressure air source to the nose mask.

4. A nose mask for receiving a patient'"'"'s nose and engaging the patient'"'"'s nose and face, said mask comprising a hollow body including wall structure defining an internal nose-receiving cavity, a nose entrance opening and a spaced inhale/exhale opening, said openings in communication with said cavity, said entrance opening-defining structure having a peripheral flange for directly engaging the top of a patient'"'"'s nose, the sides of the patient'"'"'s nose and the cheek regions adjacent the nose, and the patient'"'"'s upper lip area beneath the nose, said entrance opening-defining structure also presenting a thin, pliable lip inboard of said flange and extending into said nose entrance opening, and a metallic, manually deformable, shape-retaining reinforcing member secured to the outer surface of said flange remote from said entrance opening and in a location for extending over the bridge of the patient'"'"'s nose and diverging downwardly along both sides of the nose, said reinforcing member being deformable for shaping said mask around the upper part of the patient'"'"'s nose, said nose entrance opening being generally triangular in configuration, said flange and lip each having a pair of oblique sidewall portions, said reinforcing member being disposed directly above and having depending segments extending substantially along the length of said lip sidewall portions for manipulation and shaping of the lip sidewall portions during said mask shaping, said lip sidewall portions being thinner and more pliable than said flange sidewall portions.

5. The mask of claim 4, said body being integral and formed of pliable synthetic resin material.

6. The mask of claim 4, said inhale/exhale opening being located in opposed relationship to said nose entrance opening, there being a fitting disposed within said inhale/exhale opening for connection of a positive pressure air source to the nose mask.