Feeding system

• US 4,926,856 A
• Filed: 02/17/1988
• Issued: 05/22/1990
• Est. Priority Date: 06/21/1985
• Status: Expired due to Fees

• Current Assignee: Creditanstalt Corporate Finance, Inc. (Unicredit SPA)
• Original Assignee: Hudson Oxygen Therapy Sales Company
• Inventors: Cambio, Orlando D. Jr., Refsland, Earl R.
• Primary Examiner(s): Hindenburg, Max
• Assistant Examiner(s): REICHLE, KARIN M
• Application Number:
  US07/156,778
• Time in Patent Office: 825 Days
• Field of Search: 128/200.11, 128/200.13, 128/200.14, 128/200.16, 128/203.16, 128/203.17, 128/203.26, 128/203.22, 128/204.17, 128/203.19, 128/204.1 3, 604/127, 604/246, 604/254, 604/407, 604/905, 261/60, 261/66, 261/92, 261/119 R, 261/DIG. 65, 141/308-309, 141/329-330, 141/353, 141/360, 141/363-364, 137/453, 137/284, 222/46, 222/56
• US Class Current: 128/203.26
• CPC Class Codes: A61M 16/164 including a liquid inlet valve system
• CPC Class Codes: Y10S 261/65 Vaporizers
• CPC Class Codes: Y10S 604/905 Aseptic connectors or couplings, e.g. frangible, piercable

Abstract

A feeding system for connecting a humidifier to a reservoir comprising, a first elongated conduit for feeding water from the reservoir to the humidifier, a second elongated conduit alongside the first conduit for passing air from the humidifier to the reservoir, with an upper end of the first and second conduits being connected in fluid communication to the reservoir. The conduits are connected to the humidifier with a lower end of the first and second conduits located inside the humidifier, and with the lower end of the first conduit being located adjacent the lower end of the second conduit.

Claims

1. A feeding system, comprising:

a humidifier;

a reservoir housing a liquid above the humidifier;

first elongated conduit means for feeding liquid from the reservoir to the humidifier and having an upper end and a lower end;

second elongated conduit means alongside the first conduit means for passing air from the humidifier to the reservoir and having an upper end and a lower end;

means for connecting the upper end of the first and second conduit means in fluid communication to the reservoir below the level of liquid in the reservoir; and

means for connecting the conduit means to the upper part of the humidifier with the lower end of the first and second conduit means located inside the humidifier with the lower end of the first conduit means being located adjacent the lower end of the second conduit means, and with the lower end of the first conduit means being located above at least a portion of the second conduit means and the lower end of the second conduit means being cut off at a single angle through the second conduit means relative to the longitudinal axis of the second conduit means.

2. The system of claim 1 wherein the angle is approximately 45 degrees.

3. The system of claim 1 wherein the lowermost part of the lower end of the second conduit means is located adjacent the first conduit means.

4. The system of claim 1 wherein the angle is less than 60 degrees.

5. A feeding system, comprising:

a humidifier;

a reservoir housing a liquid above the humidifier;

first elongated conduit means for feeding liquid from the reservoir to the humidifier and having an upper end and a lower end;

second elongated conduit means alongside the first conduit means for passing air from the humidifier to the reservoir, and having an upper end and a lower end;

means for connecting the upper end of the first and second conduit means in fluid communication to the reservoir below the level of liquid in the reservoir; and

means for connecting the conduit means to the upper part of the humidifier with the lower end of the first and second conduit means located inside the humidifier, with the lower end of the first conduit means being located adjacent the lower end of the second conduit means, and with at least a portion of the lower end of the second conduit means being located on one side of and below the lower end of the first conduit means and the lower end of the second conduit means being formed at an angle relative to the longitudinal axis of the second conduit means.

6. The system of claim 5 wherein the lower end of the first conduit means is formed at an angle of approximately 90 degrees to the longitudinal axis of the first conduit means.

7. The system of claim 5 wherein the lower end of the first conduit means is located intermediate the upper and lower portion of the angled lower end of the second conduit means.

8. The system of claim 5 wherein the second conduit means is formed at an angle of from 40 to 90 degrees to the longitudinal axis of the second conduit means.

9. A feeding system, comprising:

a humidifier having a bowl including an upper part and adapted to retain a supply of sterile liquid, heating means, and a lid releasably attached to the upper part of the bowl, said lid having a tubular section defining an outlet port of the humidifier;

a reservoir located above the humidifier;

first elongated conduit means for feeding liquid from the reservoir to the humidifier and having an upper end and a lower end;

second elongated conduit means alongside the first conduit means for passing air from the humidifier to the reservoir and having an upper end and a lower end;

means for connecting the upper end of the first and second conduit means in fluid communication to the reservoir; and

a hollow first tube surrounding and closely spaced from the first and second conduit means, and a hollow second tube forming an angled extension of the first tube and in fluid communication with the first tube, said first tube being releasably attached to the lid tubular section with the outlet port in fluid communication with the first tube, with a lower end portion of the first and second conduit means connected to and extending through and from the first tube to a location inside the humidifier, and the outside diameter of the first conduit means being substantially smaller than the outside diameter of the second conduit means.

10. The system of claim 9 wherein the internal diameter of the first conduit means is approximately 0.080 inches, and the internal diameter of the second conduit means is approximately 0.260 inches.

11. The system of claim 9 wherein the internal diameter of the first part of the elbow is approximately 0.730 inches.