Position independent humidifier apparatus

• US 4,910,384 A
• Filed: 08/23/1988
• Issued: 03/20/1990
• Est. Priority Date: 08/23/1988
• Status: Expired due to Fees

• Current Assignee: Creditanstalt Corporate Finance, Inc. (Unicredit SPA)
• Original Assignee: The Kendall Company (Colgate-Palmolive Company)
• Inventors: Silver, Brian H.
• Primary Examiner(s): Pellinen, A. D.
• Assistant Examiner(s): Evans, Geoffrey S.
• Application Number:
  US07/235,402
• Time in Patent Office: 574 Days
• Field of Search: 219/271-276, 261/DIG. 65, 261/101, 261/102, 261/103, 128/204.13, 128/203.17, 128/203.16, 128/203.27, 128/204.17
• US Class Current: 392/396
• CPC Class Codes: A61M 16/142 with semi-permeable walls separating the liquid from the respiratory gas
• CPC Class Codes: A61M 16/16 Devices to humidify the respiration air A61M16/1045 takes precedence

Abstract

A humidification apparatus for utilization in human respiration systems comprising a hollow housing in which an envelope of vapor permeable water impermeable material is arranged to divide the housing generally in half. A heater and a water supply conduit are arranged in the envelope. A gas inlet and a gas outlet port are disposed through the housing and are in communication with each other. The heater changes the water into vapor and permits it to pass through the envelope and be carried with the gas, out of the housing to a patient.

Claims

1. An omniorientable humidifier assembly for humidifying a breathable gas, said humidifier assembly comprising:

a hollow housing;

a gas inlet means in said housing;

a gas outlet means in said housing; and

a vapor discharge means in said housing;

said vapor discharge means arranged so as to define a plurality of flow paths in said housing between said gas inlet and said gas outlet means, whereby to maximize the vapor discharge capabilities of said humidifier assembly;

said gas inlet means comprising a bifurcated junction which directs gas from a conduit separately into said flow paths in said housing.

2. An omniorientable humidifier assembly for humidifying a breathable gas, said humidifier assembly comprising:

a hollow housing;

a gas inlet means in said housing;

a gas outlet means in said housing; and

a vapor discharge means in said housing;

said vapor discharge means arranged so as to define a plurality of flow paths in said housing between said gas inlet and said gas outlet means, whereby to maximize the vapor discharge capabilities of said humidifier assembly;

said gas outlet means comprising a bifurcated junction which receives treated gas from said plurality of flow paths in said housing into a common conduit for transmission to a patient.

3. A position independent humidifier apparatus, comprising:

a hollow housing;

as a vapor permeable enclosure arranged in said hollow housing;

a heater arranged in said vapor permeable enclosure;

a water supply means in communication with said vapor permeable enclosure; and

a gas inlet and a gas outlet each in communication with said hollow housing to direct gas over more than one surface of said vapor permeable enclosure, to optimize the heat-moisture transfer therefrom.

4. A position independent humidifier apparatus as recited in claim 3, wherein said vapor permeable enclosure comprises an envelope having at least two surfaces for effectuating said transfer of heat and moisture.

5. An omniorientable humidifier assembly for humidifying a breathable gas, said humidifier assembly comprising:

a hollow housing;

a gas inlet means in said housing;

a gas outlet means in said housing; and

a vapor discharge means in said housing;

said vapor discharge means arranged so as to define a plurality of flow paths in said housing between said gas inlet and said gas outlet means, whereby to maximize the vapor discharge capabilities of said humidifier assembly;

said vapor discharge means comprising a vapor permeable envelope having a heater and a water discharge means therein.

6. An omniorientable humidifier assembly as recited in claim 5, wherein said vapor permeable envelope comprises a first layer of vapor permeable membrane and a second layer of vapor permeable membrane hermetically sealed at their peripheral edges, said heater means being sandwiched between said first and second membranes.

7. An omniorientable humidifier assembly as recited in claim 5 wherein said vapor permeable envelope completely encloses said heater means.

8. An omniorientable humidifier assembly as recited in claim 5, wherein said water discharge means comprises a conduit which permits water to discharge into said envelope from a water source.

9. An omniorientable humidifier assembly as recited in claim 6 wherein said flow paths comprise the space between each vapor permeable membrane and its respective housing member.

10. An omniorientable humidifier assembly as recited in claim 6, wherein said vapor permeable membrane prevents liquid water from passing therethrough.

11. An omniorientable humidifier assembly as recited in claim 6, wherein said first layer and said second layer of vapor permeable membranes are each hermetically sealed to their respective housing member.

12. An omniorientable humidifier assembly as recited in claim 11 wherein each housing member has an annular lip against which said membranes are attached.

13. An omniorientable humidifier assembly as recited in claim 8, wherein said water conduit extends into said housing through an edge portion thereof.

14. A position independent humidifier apparatus, comprising;

a hollow housing;

a vapor permeable enclosure arranged in said hollow housing;

a heater arranged in said vapor permeable enclosure;

a water supply means in communication with said vapor permeable enclosure;

a gas inlet and a gas outlet each in communication with said hollow housing to direct gas from a source to the apparatus and from the apparatus to

a patient, once the gas has been treated within the apparatus.

15. A position independent humidifier apparatus as recited in claim 14, wherein said water supply means discharges water into said enclosure for heating and transmission thereof through said vapor permeable enclosure.

16. A position independent humidifier apparatus as recited in claim 15, wherein said enclosure divides said hollow housing into two chambers, one on each side thereof.

17. A position independent humidifier apparatus as recited in claim 16 wherein a plurality of standoffs are arranged on the inner surface of said housing, to support said enclosure therewithin.

18. A position independent humidifier apparatus as recited in claim 17, including:

a plurality of fins arranged on the outer surface of said housing to facilitate cooling thereof.

19. A position independent humidifier apparatus as recited in claim 14, including a gas deflecting vane arranged on the inside of said housing downstream of said gas inlet, to disperse gas coming therein throughout said apparatus.

20. A position independent humidifier apparatus as recited in claim 14, wherein said hollow housing is of generally disc-like configuration, having a peripheral wall comprising the location of its juncture.

21. A position independent humidifier apparatus as recited in claim 20, wherein a port is disposed through said housing to facilitate temperature analysis of the gas within said housing.

22. A position independent humidifier apparatus comprising;

a pair of housing members having a peripheral wall therearound, to define a hollow housing;

a vapor permeable fluid impermeable enclosure arranged in said housing;

a heater arranged within said enclosure;

a water supply means arranged in communication with said enclosure; and

a pair of gas passageways arranged in said housing and in communication with one another to permit gas brought into said housing to be treated by reaction with said enclosure and discharged out of said housing.

23. A position independent humidifier apparatus as recited in claim 22, including:

a divided junction arranged in communication with at least one of said gas passageways in said housing, to direct the flow of gas with respect to said housing.

24. A position independent humidifier apparatus as recited in claim 23, wherein said divided junction comprises a bifurcated connector attached to each of said gas passageways in said housing.

25. An omniorientable humidifier assembly for humidifying a breathable gas, said humidifier assembly comprising:

a hollow housing comprising a pair of housing members of disc-like configuration having peripheral walls which mate together;

a gas inlet means in said housing;

a gas outlet means in said housing; and

a vapor discharge means in said housing;

said vapor discharge means arranged so as to define a plurality of flow paths in said housing between said gas inlet and said gas outlet means, whereby no maximize the vapor discharge capabilities of said humidifier assembly.