Humidifier for a ventilator and an associated attachment

• US 5,673,687 A
• Filed: 05/24/1996
• Issued: 10/07/1997
• Est. Priority Date: 06/07/1995
• Status: Expired due to Term

• Current Assignee: RIC INVESTMENTS LLC (Koninklijke Philips N.V.)
• Original Assignee: Respironics Incorporated (Koninklijke Philips N.V.)
• Inventors: Smith, Eugene P. III, Dobson, Darwin B., Keefe, Gregg D., Ogden, Douglas R.
• Primary Examiner(s): Millin, Vincent
• Assistant Examiner(s): Wieland, Robert N.
• Application Number:
  US08/653,362
• Time in Patent Office: 501 Days
• Field of Search: 128/204.14, 128/200.24, 128/203.16, 128/203.17, 128/204.17, 128/203.27, 128/203.12, 128/200.11
• US Class Current: 128/204.14
• CPC Class Codes: A61M 16/1075 by influencing the temperature A61M16/1045 takes precedence
• CPC Class Codes: A61M 16/109 the humidifying liquid or the beneficial agent
• CPC Class Codes: A61M 16/16 Devices to humidify the respiration air A61M16/1045 takes precedence
• CPC Class Codes: A61M 2205/581 by audible feedback

Abstract

A sealing and retaining arrangement for a humidifier with separable top and bottom members and an attaching arrangement for rigidly connecting a ventilator or other respiratory device to the top of the humidifier in a predetermined, fixed position. The sealing and retaining arrangement is designed for use between separable top and bottom members of a humidifier. The top and bottom are made of relatively rigid material and have overlapping or telescoping portions with a flexible, resilient seal extending therebetween. The seal also serves to positively retain the top and bottom together while in use. The attaching arrangement is designed to rigidly connect the ventilator or other respiratory device to the top of the humidifier in a predetermined, fixed position. This is accomplished by rigidly coupling the air outlet of the ventilator directly to the air inlet of the humidifier without any intervening, flexible hose.

Claims

1. An attaching arrangement between a ventilator and a separable humidifier, said humidifier including an air inlet, an air outlet, and reservoir means for holding water wherein air under pressure above atmospheric can flow between said air inlet and said air outlet over said water to add humidity to said air flow, said ventilator including an air outlet means and means for supplying air under pressure above atmospheric through said air outlet means of said ventilator, said attaching means including means for removably attaching said ventilator in a predetermined, fixed position relative to said humidifier, said attaching means including means for substantially rigidly coupling said air outlet means of said ventilator to the air inlet means of said humidifier to maintain said ventilator in said predetermined, fixed position relative to said humidifier.

2. The attaching means of claim 1 wherein said air outlet means and said air inlet means have respective air flow passages and said attaching means further includes means for sealingly engaging said air flow passages in fluid communication with each other when said ventilator is in said predetermined, fixed position relative to said humidifier.

3. The attaching arrangement of claim 1 wherein said attaching means includes means for removably stacking said ventilator atop said humidifier in said predetermined, fixed position with the air outlet of said ventilator rigidly coupled to the air inlet means of said humidifier.

4. The attaching arrangement of claim 3 wherein said ventilator has a bottom and said humidifier has a top, said bottom and top having at least portions thereof abutting one another in said predetermined, fixed position.

5. The attaching arrangement of claim 4 wherein the bottom of said ventilator has a first shape and size and said top of said humidifier has a section with a substantially similar shape and size.

6. The attaching arrangement of claim 3 wherein said ventilator has a bottom with a substantially horizontal surface and said humidifier has a top with a substantially horizontal surface, said attaching means attaching said ventilator and humidifier together in said first, predetermined position with said ventilator atop said humidifier and said horizontal surfaces substantially parallel and substantially abutting one another.

7. The attaching arrangement of claim 6 wherein one of said horizontal surfaces includes means for frictionally engaging the other horizontal surface to inhibit relative sliding movement between the horizontal surfaces in said predetermined, fixed position.

8. The attaching arrangement of claim 1 wherein said rigid coupling means between the air outlet means of said ventilator and the air inlet means of said humidifier includes a male-female connection with the male portion thereof being slidably received in the female portion thereof to maintain said ventilator in said predetermined, fixed position relative to said humidifier.

9. The attaching arrangement of claim 1 wherein said humidifier has separable, relatively rigid, top and bottom members and said air inlet means for said humidifier is in the top member thereof.