Nasal continuous positive airway pressure device

• US 9,168,346 B2
• Filed: 08/14/2013
• Issued: 10/27/2015
• Est. Priority Date: 12/02/2005
• Status: Active Grant

• Current Assignee: Vyaire Medical Consumables LLC
• Original Assignee: CareFusion 2200 Inc (Becton, Dickinson & Co)
• Inventors: Pierro, Brian, Harrington, Steven M., Bridges, Bruce K., Gaylord, Douglas
• Primary Examiner(s): Dixon, Annette
• Application Number:
  US13/967,222
• Publication Number:
  US 20130327334A1
• Time in Patent Office: 804 Days
• Field of Search: 128/200.24, 128/203.12, 128/203.22, 128/204.11, 128/204.18, 128/207.18, 128/911, 128/912, 128/204.12, 128/204.24, 128/204.25, 128/206.11, 128/207.15, 128/207.13, 128/200.26, 128/200.29, 128/DIG.26, 600/532, 600/543, 600/529, 604/174, 604/179, 242/1, 242/4, D24/110, D24/110.5, D24/164, D24/176, D24/191
• US Class Current: 1/1
• CPC Class Codes: A61M 16/0057 Pumps therefor
• 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 16/0825 with ball-sockets
• CPC Class Codes: A61M 16/0858 Pressure sampling ports
• CPC Class Codes: A61M 2206/16 Rotating swirling helical flow, e.g. by tangential inflows

Abstract

A nasal continuous positive airway pressure (nCPAP) device having a hollow body with a proximal wall, a distal wall, and an exhaust port extending through the distal wall. A proximal tubular member extends through the proximal wall of the body and is arranged such that a stream of gas entering the body through the proximal tubular member will exit the proximal tubular member in a first direction and then enter the exhaust port. A nozzle extends through the body and is arranged such that a stream of gas entering the body through the nozzle will exit the nozzle and then enter the proximal tubular member in a second direction that is opposite the first direction.

Claims

1. A nasal continuous positive airway pressure (nCPAP) device comprising:

a hollow body having a proximal wall and a distal wall;

an exhaust port extending through the distal wall of the body;

a plurality of nozzles extending through the body and arranged such that a stream of gas entering the body through each nozzle impinge upon each other and combine to flow in a first direction proximal toward the proximal wall;

a tubular member extending through the proximal wall of the body, the proximal tubular member comprising an inner cross-section defining a relief zone between the nozzles and proximal wall, and a tapering zone between the relief zone and the proximal wall, wherein a fluid flow a stream of gas entering the body through the proximal tubular member in a second direction that is opposite the first direction causes the combined stream of gas from the nozzles to separate and enter the relief zone.

2. The device of claim 1, wherein the body comprises a first and second fluid flow circuits between the proximal wall and the distal wall.

3. The device of claim 2, wherein the nozzles are non-parallel relative to each other and relative to a corresponding centerline through each fluid flow circuit.

4. The device of claim 3, wherein at least two nozzles are transversely aligned relative to the corresponding passageway centerline through each fluid flow circuit.

5. The device of claim 3, wherein the stream of gas entering the body through each nozzle impinges upon each other at a point displaced from the corresponding centerline through each fluid flow circuit.

6. The device of claim 2, wherein the nozzles extend into each flow circuit at circumferential locations about the fluid flow circuit.

7. The device of claim 2, wherein each fluid flow circuit comprises a tubular member.

8. The device of claim 7, wherein the body includes a housing within which each tubular member is at least partially disposed and forming an opening adjacent the proximal wall, respectively, the device further comprising:

a patient interface piece including a base forming a pair of lumens each sized for mounting about a proximal end of a respective one of the tubes; and

an interface portion fluidly connected to the lumens and adapted for fluid connection to a patient'"'"'s nares;

wherein the housing and the base are configured such that upon final assembly, the base nests within the opening.

9. The device of claim 8, wherein the housing and the base are configured such that upon final assembly, a pressure monitoring fluid circuit is defined from the lumens to a pressure monitoring port formed in the housing.

10. The device of claim 9, wherein the interface portion is one of a nasal mask and a pair of prongs.

11. The device of claim 1, wherein each nozzle comprises an inlet end fluidly connected to a common manifold.

12. The device of claim 1, wherein the tubular member forms a radial slot adjacent a proximal end thereof, and further wherein the body forms a pressure monitoring port fluidly connected to the radial slot.