Heat and moisture exchanger

• US 6,745,766 B2
• Filed: 11/26/2001
• Issued: 06/08/2004
• Est. Priority Date: 03/29/2000
• Status: Expired due to Term

• Current Assignee: Mallinckrodt Holdings B.V. (Medtronic Plc)
• Original Assignee: Mallinckrodt Holdings B.V. (Medtronic Plc)
• Inventors: Fini, Massimo
• Primary Examiner(s): Lewis, Aaron J.
• Assistant Examiner(s): WEISS JR, JOSEPH
• Application Number:
  US09/979,634
• Publication Number:
  US 20020157667A1
• Time in Patent Office: 925 Days
• Field of Search: 128/201.13, 128/205.17, 128/205.27, 128/207-4-2, 128/203.26, 128/204-5-2
• US Class Current: 128/204.17
• CPC Class Codes: A61M 16/1045 Devices for humidifying or heating the inspired gas by using recovered moisture or heat from the expired gas
• CPC Class Codes: A61M 16/12 by mixing different gases
• CPC Class Codes: A61M 16/125 Diluting primary gas with ambient air

Abstract

A device for passive humidification of tracheostomized or intubated patients, comprising an outer body which forms an opening for connection to the patient and is connected to at least one seat of a filtering element which is connected to the outside, the device further comprising, on the outer body, a coupling for connection to at least one oxygen delivery duct which ends proximate to the outer part of the filtering element.

Claims

1. In a device for passive humidification of tracheostomized or intubated patients, comprising an outer body which has a first opening for connection to a patient and is connected to at least one seat of a filtering and humidifying element, the improvement comprising:

at least one filtering and humidifying element disposed in said at least one seat, said at least one filtering element having an internal channel;

said outer body including at least one second opening for receiving the at least one filtering and humidifying element;

at least one oxygen delivery duct connected to said at least one seat of said filtering element;

on said outer body, a coupling for connection to said at least one oxygen delivery duct, said channel of said at least one filtering and humidifying element being connected to said at least one oxygen delivery duct to conduct oxygen from said at least one oxygen delivery duct through said channel; and

at least one cross-member having a first end pivotally connected to said outer body and a second end removably connected to said outer body, said at least one cross-member forming a sealed cover over said at least one second opening for removably retaining said at least one filtering and humidifying element in said at least one seat, said at least one cross-member being spaced apart from said channel of said at least one filtering and humidifying element and redirecting oxygen from said channel through said at least one second opening of said outer body through said at least one filtering and humidifying element to said first opening, so as to filter and humidify said oxygen supplied to the patient from said oxygen delivery duct.

2. The device according to claim 1, wherein said at least one filtering and humidifying element comprises two filtering and humidifying elements, said at least one second opening comprises two second openings, and said outer body comprises two mutually inclined flattened wings including said two second openings for receiving said filtering humidifying elements.

3. The device according to claim 2, wherein said first opening is arranged between said wings.

4. The device according to claim 2, wherein said seat is formed at an outer end of said wings.

5. The device according to claim 1, wherein said at least one filtering and humidifying element comprises a ribbon which is wound on a core which internally forms said internal channel connected to said oxygen delivery duct.

6. The device according to claim 1, wherein said at least one delivery duct comprises a plurality of branches, and said coupling is connected to said plurality of branches of said at least one delivery duct, and wherein said plurality of branches are arranged mutually opposite.

7. The device according to claim 1, wherein said outer body comprises a port which can be removably closed by a plug, and wherein said port is arranged so as to be substantially axially aligned with respect to said first opening.