U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Humidifier system for artificial respiration

Patent 7428902 Issued on September 30, 2008. Estimated Expiration Date: Icon_subject December 15, 2024. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

2116328

3912795

Air humidifiers
Patent #: 4038980
Issued on: 08/02/1977
Inventor: Fodor

Heat and moisture exchanging device for respiration
Patent #: 4090513
Issued on: 05/23/1978
Inventor: Togawa

Respiratory air humidifier for respirators
Patent #: 4146597
Issued on: 03/27/1979
Inventor: Eckstein ,   et al.

Method and apparatus for inhalation rewarming
Patent #: 4319566
Issued on: 03/16/1982
Inventor: Hayward ,   et al.

Continuously rejuvenated ion exchanger
Patent #: 4500430
Issued on: 02/19/1985
Inventor: Dasgupta

Heated oxygen system and portable equipment case for hypothermia victims
Patent #: 4621633
Issued on: 11/11/1986
Inventor: Bowles ,   et al.

Inhalation apparatus
Patent #: 4652408
Issued on: 03/24/1987
Inventor: Montgomery

Method and apparatus for the treatment of the respiratory track with vapor-phase water
Patent #: 4773410
Issued on: 09/27/1988
Inventor: Blackmer ,   et al.

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Inventors

Assignee

Application

No. 11013512 filed on 12/15/2004

US Classes:

128/204.17, Means for heating respiratory gas or respiration device128/201.13, Inhaled gas heated or humidified by exhaled gas128/204.13, Treating agent evaporated from extended surface absorbent (e.g., sponge, fibrous wick, screen, etc.)128/205.27, Means for removing substance from respiratory gas128/200.24, RESPIRATORY METHOD OR DEVICE128/204.18, Means for supplying respiratory gas under positive pressure128/205.28, Carbon dioxide165/119WITH SOLIDS SEPARATOR FOR EXCHANGE FLUID

Examiners

Primary: Yu, Justine R.
Assistant: Ostrup, Clinton

Attorney, Agent or Firm

Foreign Patent References

  • 1003559 BE 04/01/1992
  • 196 02 077 DE 08/01/1996
  • 0 567 158 EP 10/01/1993
  • 0 754 470 EP 06/01/1996
  • 2 277 689 GB 11/01/1994

International Classes

A62B 18/08
A62B 23/02
A62B 7/00
A62B 7/10
A61M 15/00
A61M 16/00
F24J 3/00
F28F 13/12
F28F 19/00

Abstract

A humidifier system for heating and humidifying respiratory gases has a housing with an inner chamber, a first port at the first end for connection to a ventilator breathing circuit and a second port at the second end for connection to a patient to supply respiratory gases to the patient and to receive exhaled gases from the patient. A body of heat moisture exchange (HME) material is located within the chamber, and a water permeable device is also located within the chamber. The housing has a water refill inlet communicating with the water permeable device. A water supply outside the housing is connected to the water refill inlet to supply water to the water permeable device. A heater mounted outside the housing supplies heat to the housing and maintains the housing at a selected temperature.

Other References

  • Medisize HME Booster, http://www.hmebooster.com (earliest publication date unknown).
  • Humidification and Filtration Products, tkb Surgical Products brochure, 2001.
  • 900MR748 Adult Breathing Circuit Kit, Fisher & Paykel Healthcare, date unknown.
  • MR410 Respiratory Humidifier, Fisher & Paykel Healthcare Brochure 1995.
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