Multiple channel sample port

• US 5,857,461 A
• Filed: 08/18/1997
• Issued: 01/12/1999
• Est. Priority Date: 08/26/1996
• Status: Expired due to Term

• Current Assignee: Oridion Medical 1987 Limited (Medtronic Plc)
• Original Assignee: Oridion Medical (1987) Ltd. (Medtronic Plc)
• Inventors: Levitsky, Gershon, Colman, Joshua L.
• Primary Examiner(s): Weiss, John G.
• Assistant Examiner(s): ANDERSON, CHARLES WENDELL
• Application Number:
  US08/912,776
• Time in Patent Office: 512 Days
• Field of Search: 128/207.14, 128/205.23, 128/200.21, 128/200.24, 128/204.16, 128/203.12, 60/532, 60/529
• US Class Current: 128/207.14
• CPC Class Codes: A61B 5/083 Measuring rate of metabolism by using breath test, e.g. measuring rate of oxygen consumption
• CPC Class Codes: A61B 5/087 Measuring breath flow
• CPC Class Codes: A61B 5/097 Devices for facilitating collection of breath or for directing breath into or through measuring devices
• CPC Class Codes: A61M 16/085 Gas sampling

Abstract

A multiple channel sample port for an airway adaptor, which includes a substantially spherical projection with a plurality of inlet tubes and an outlet, which is designed to be placed substantially within the main channel of the airway adaptor through an opening in the side wall of main channel of the airway adaptor. The outlet is connected to, or integrally formed with, one end of a substantially cylindrical chamber. The opposite end of the substantially cylindrical chamber is adapted to be connected to a gas analyzer. When a pressure reduced below atmospheric pressure is applied at the gas analyzer, gas flows from the main channel of the airway adaptor into the inlets of the substantially spherical projection, through the spherical projection into the substantially cylindrical projection, and from thence to the gas analyzer.

Claims

1. An airway adaptor, comprising:

(a) a tube, said tube featuring a wall; and

(b) a port forming a junction with said tube through said wall, said port including an outlet, an air collector and a plurality of inlets, said air collector being attached to said outlet, and said inlets being attached to said air collector, each of said inlets featuring an opening, and said opening being located substantially within said tube.

2. The airway adaptor of claim 1, wherein said inlets are holes.

3. The airway adaptor of claim 2, wherein the internal diameter of each of said holes is substantially similar to said internal diameter of each of said other holes.

4. The airway adaptor of claim 3, wherein said internal diameter lies in a range of from about 0.5 mm to about 1.7 mm.

5. The airway adaptor of claim 4, wherein said internal diameter is about 0.8 mm.

6. The airway adaptor of claim 1, wherein said inlets are substantially tubular.

7. The airway adaptor of claim 6, wherein said inlets and said air collector are formed of substantially hydrophobic material.

8. The airway adaptor of claim 6, wherein said air collector is formed of substantially hydrophilic material, and said inlets are formed of substantially hydrophobic material.

9. The airway adaptor of claim 6, wherein each of said inlets has a substantially similar internal diameter and a substantially similar length as each of said other inlets, and each of said openings has a substantially similar internal diameter as each of said other openings.

10. The airway adaptor of claim 9, wherein said internal diameter of each of said inlets and of each of said openings lies in the range of from about 0.5 mm to about 1.7 mm.

11. The airway adaptor of claim 10, wherein said internal diameter of each of said inlets and of each of said openings is about 0.8 mm, and said length of each of said inlets is about 2.5 mm.

12. The airway adaptor of claim 6, wherein said inlets project into said air collector, such that an end of each of said inlets is located substantially within said air collector, and there is a first distance between each of said ends, and a second distance between each of said openings, said first distance being less than said second distance.

13. The airway adaptor of claim 1, wherein said openings of said inlets are substantially facing one end of said tube.

14. The airway adaptor of claim 13, wherein said plurality of inlets is three inlets, and each of said inlets is symmetrically disposed relative to each other of said inlets.

15. The airway adaptor of claim 1, wherein said opening of at least one of said inlets is substantially facing one end of said tube, and said opening of at least another one of said inlets is substantially facing the other end of said tube.

16. The airway adaptor of claim 1, wherein said air collector is substantially centrally located within said tube, and said air collector is substantially perpendicular to said wall of said tube.

17. The airway adaptor of claim 1, wherein said air collector is a hollow sphere.

18. The airway adaptor of claim 17, wherein the external diameter of said air collector is less than about 5.5 mm.

19. The airway adaptor of claim 1, wherein said outlet has a first internal diameter, and each of said openings of said inlets has a second internal diameter, said first internal diameter being greater than said second internal diameter.

20. A method of using the airway adaptor of claim 1 for withdrawing a sidestream, comprising:

(a) attaching the airway adaptor to a conduit for conducting gas;

(b) connecting said outlet of said port to a gas analyzer; and

(c) applying a force at said gas analyzer, such that gas flowing through the airway adaptor moves from the airway adaptor to said gas analyzer.

21. A method of using the airway adaptor of claim 1 for administering medicine, comprising:

(a) connecting said airway adaptor to a breathing apparatus of a patient; and

(b) placing the medicine in said port of the airway adaptor.