US 7,497,215 B1
Medical ventilator with compressor heated exhalation filter
Patrick Nguyen, Carlsbad, Calif. (US); Gardner J. Kimm, Carlsbad, Calif. (US); Steve Han, Upland, Calif. (US); and Mabini M. Arcilla, San Diego, Calif. (US)
Assigned to Koninklijke Philips Electronics N.V., Eindhoven (Netherlands)
Filed on Dec. 19, 2003, as Appl. No. 10/742,382.
Claims priority of provisional application 60/435112, filed on Dec. 20, 2002.
Int. Cl. A61M 16/00 (2006.01); A62B 7/00 (2006.01); A62B 7/10 (2006.01); A62B 23/02 (2006.01); F24J 3/00 (2006.01); F16K 31/02 (2006.01)
U.S. Cl. 128—204.17  [128/204.21; 128/205.27; 128/205.29] 16 Claims
OG exemplary drawing
 
9. A medical ventilator comprising:
a patient circuit having an inspiration branch and an expiration branch;
a pressure generator operatively coupled to the inspiration branch, wherein during operation the pressure generator (a) increases a pressure of gas to be delivered to a patient via the inspiration branch of the patient circuit and (b) produces heat;
a heat sink coupled to the expiration branch and physically separated from the pressure generator; and
a thermal conductor coupled in thermal communication with the pressure generator and the heat sink for transferring at least part of the heat produced by the pressure generator during the operation thereof to the heat sink, and wherein the thermal conductor is physically separated from the patient circuit.