Apparatus for control of oxygen and/or air flow to nasal prongs

• US 9,861,777 B2
• Filed: 04/09/2012
• Issued: 01/09/2018
• Est. Priority Date: 02/06/2012
• Status: Active Grant

• Current Assignee: Neotech Products LLC
• Original Assignee: Neotech Products LLC
• Inventors: Ramanathan, Rangasamy, Heyman, Arnold M., Thornbury, Thomas R., McCrary, Craig R.
• Primary Examiner(s): MATTER, KRISTEN CLARETTE
• Application Number:
  US13/506,259
• Publication Number:
  US 20130199531A1
• Time in Patent Office: 2,101 Days
• Field of Search: 12820024, 12820418, 12820424, 12820425, 12820611, 12820718, 128912
• 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 16/0672 Nasal cannula assemblies for oxygen therapy
• CPC Class Codes: A61M 16/0816 Joints or connectors
• CPC Class Codes: A61M 2202/0007 introduced into the body
• CPC Class Codes: A61M 2202/0208 Oxygen
• CPC Class Codes: A61M 2205/584 having a color code

Abstract

Apparatus for control of oxygen and/or air flow to nasal prongs.

Claims

1. An air or oxygen flow supply system between a supply source and nasal prongs applicable to a patient, comprising:

an inlet tubular fitting sized and configured to directly endwise connect to said supply source, said fitting defining an inlet flow passage area;

a pair of tubular prongs operatively connected with said inlet fitting and receivable in an infant'"'"'s nostrils to deliver oxygen or oxygen and air flow to the infant, said prongs each having a prong flow passage area, wherein the inlet flow passage area is significantly greater than each prong flow passage area;

said fitting further comprising;

a hollow body having a relatively large flow input chamber sized for telescopic interfit with said supply source, the hollow body having two relatively smaller flow output chambers each sized for telescopic interfit reception of respective output flow ducts, the output chambers located in direct and open alignment with an interior of said input chamber, said input chamber having substantially the same interior width throughout the entire length thereof, said two output chambers having direct and like-sized communication with said input chamber whereby input flow is equally divided into two output flow streams, said output flow ducts directly communicate with the entirety of the input chamber proximate two intervening like size and parallel venturi passages each having a length and minimum diameter, each venturi passage length being substantially less than said minimum diameter thereof proximate entrance to a respective one of the output flow ducts, said flow ducts sealingly connected with said two output chambers, and said two venturi output passages having overall width less than a diameter of said input chamber through the length thereof;

said output chambers having interior surfaces that taper endwise directionally toward said input chamber, for endwise progressively increasing sealing push-in engagement with the output flow ducts; and

wherein the hollow body is configured to guide flow from said input chamber into said venturi passages and from said venturi passages toward said output flow ducts during use.