Nasal cannula

• US 4,367,735 A
• Filed: 12/31/1979
• Issued: 01/11/1983
• Est. Priority Date: 12/31/1979
• Status: Expired due to Term

• Current Assignee: Union Trustees
• Original Assignee: Novametrix Medical Systems, Inc. (Dixtal Medical, Inc.)
• Inventors: Dali, Carmelo
• Primary Examiner(s): Recla, Henry J.
• Application Number:
  US06/108,667
• Time in Patent Office: 1,107 Days
• Field of Search: 128/203.18, 128/203.22, 128/204.12, 128/205.25, 128/206.11, 128/207.11, 128/207.18, 128/207.17, 128/204.18
• 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 16/0683 Holding devices therefor

Abstract

An improved nasal cannula is made of a soft pliable material and has two hollow tubular prongs which are ribbed to prevent significant closure of the airways through the prongs upon bending of the prongs and a base adapted to receive a soft strip of foam-like material which can be attached to a skull cap for securing the prongs of the cannula in the nasal passages of a patient.

Claims

1. A nasal cannula for aiding the breathing of a patient by use of a respirator comprising:

a body made of a soft pliable material and including two hollow tubular bored prongs and a base, each prong having a nasal end and a respirator end, the respirator ends of the prongs merging adjacent said base, said base having an axial bore in communication with the bores of said prongs, the periphery of substantially the entire length of each prong intermediate said nasal and respirator ends being provided on its outer circumference with axially displaced circular ribs integrally formed and occupying planes substantially normal to the respective longitudinal axes of said tubular prong to permit flexing of each prong and substantially maintain the original cross-sectional diameter of the tubular bored prongs.

2. Apparatus according to claim 1 further comprising a bulbus portion integrally formed on the nasal end of each of said prongs.

3. Apparatus according to claim 2 wherein said prongs are ribbed along their entire lengths between the bulbus portions and the region of merger adjacent said base.

4. Apparatus according to claim 1 wherein said base has an aperture and further comprising means for tying said cannula to the patient securely receivable within said aperture.

5. Apparatus according to claim 4 wherein said tying means includes an elongated soft flexible strip.

6. Apparatus according to claim 4 further comprising a skull cap, and a plurality of flexible strips attached to said skull cap and secured to the base of the nasal cannula.

7. Apparatus according to claim 6 wherein said strips are attached to said skull cap at substantially equally angular displaced regions thereon.

8. Apparatus according to claim 1 further comprising a connector member having a nasal end, a respirator end and an axial bore extending from said nasal end to said respirator end, said connector member nasal end being snuggly received within the bore in the base of said body whereby the bores in said prongs are in communication with the bore in said connector member, said respirator end of said connector member being adapted for removable engagement with said respirator.

9. Apparatus according to claim 5 wherein said connector member is made from a material more rigid than the material from which said body is formed.