公开(公告)号：US20250114546A1

公开(公告)日：2025-04-10

申请号：US18904372

申请日：2024-10-02

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： HENDRIK RICHARD JOUSMA ,  BONNE LAMBERT BOONSTRA ,  MICHIEL SCHALLIG ,  OKKE OUWELTJES ,  MARC ALEXANDER PASTOORS ,  PAULUS CORNELIS DUINEVELD ,  ROEL STEUNENBERG

IPC: A61M16/00

Abstract: Provided is an airflow device, for example a respiratory support device, comprising a flow path along which air is displaceable, and an acoustic absorber arranged along at least part of the flow path. Cavities are defined in a material of the acoustic absorber for absorbing sound. The airflow device also comprises an acoustically transparent layer between the flow path and the acoustic absorber. The acoustically transparent layer is configured to transmit sound in the flow path to the acoustic absorber to enable the acoustic absorber to absorb the sound. The acoustically transparent layer has an exterior surface for exposing to the air in the flow path, and an interior surface facing away from the flow path and towards the acoustic absorber.

公开(公告)号：US20240325673A1

公开(公告)日：2024-10-03

申请号：US18610510

申请日：2024-03-20

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： PAULUS CORNELIS DUINEVELD ,  BONNE LAMBERT BOONSTRA

IPC: A61M16/16 ,  A61M16/00 ,  A61M16/10

CPC classification number: A61M16/16 ,  A61M16/0051 ,  A61M16/0066 ,  A61M16/026 ,  A61M16/109 ,  A61M2205/3368 ,  A61M2205/3379

Abstract: A humidifier (52) of a heated pass-over type comprises a heater plate (70), water reservoir (62), sensors (86), and a controller (88). The water reservoir (62) houses a volume of water (66) and includes a heater plate contact surface (68). The sensors (86) generate signals for conveying humidifier operating status and ambient conditions. The controller (88) is configured to: (i) predict a water mass within the water reservoir (62) based on predetermined heat and water mass transfer functions of a given humidifier design, the sensor signals, and heater plate power; (ii) determine a length of time to evaporate all water of the predicted water mass; and (iii) (a) output a warning signal in response to predicted water mass being insufficient for a remainder of the treatment duration, or (iii) (b) adapt a power setting to change the evaporation rate of the current predicted water mass to ensure that it is sufficient to last for a remainder of the treatment duration and prevent the water reservoir from running dry.

公开(公告)号：US20240001059A1

公开(公告)日：2024-01-04

申请号：US18215247

申请日：2023-06-28

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： BONNE LAMBERT BOONSTRA ,  PAULUS CORNELIS DUINEVELD ,  BERNARD F. HETE ,  MICHAEL B. KNEPPER

IPC: A61M16/00 ,  A61M16/10

CPC classification number: A61M16/022 ,  A61M16/1075 ,  A61M16/0003 ,  A61M16/0066

Abstract: A humidifier (12) of a heated pass-over type for use in a respiratory therapy device (54) comprises a heater plate (70), a water reservoir (62), one or more sensors (86), and a controller (88). The water reservoir (62) houses a volume of water (66) and includes one surface for contacting the heater plate (70). The sensors (86) generate output signals conveying information about an operating status of the humidifier (54) and ambient conditions. The controller (88) controls an evaporation rate of the volume of water housed in the water reservoir (62) with a power control according to a power control algorithm for humidifying the flow of breathable gas (60) received at the breathable gas inlet (72) of the water reservoir (62) into a flow of humidified breathable gas (78) at the humidified breathable gas outlet (74) of the water reservoir (62). The power control algorithm includes a transfer function in which a required power input to the heater plate is a function of a desired evaporation rate based upon generated sensor output signals.