Ventilator with integrated blower to provide negative or positive pressure in a ventilator system

Patent metadata

Field	Value
Publication number	US-9259546-B2
Application number	US-201113994940-A
Country	US
Kind code	B2
Filing date	Dec 16, 2011
Priority date	Dec 21, 2010
Publication date	Feb 16, 2016
Grant date	Feb 16, 2016

Abstract

A ventilator system ( 100/200/300/400 ) includes an integrated blower ( 130/230/330 ). In one case, the ventilator system includes: an inspiration port ( 122/222/322 ) for connection to an inspiratory limb ( 112/212/312 ) of a dual-limb patient circuit ( 110/210/310 ), and an expiration port ( 142/242/342 ) for connection to an expiratory limb ( 114/214/314 ) of the dual-limb patient circuit; a gas delivery device ( 120/220/320 ) connected to the inspiration port to supply a pressurized flow of gas to the inspiration port to generate a positive pressure; and a blower having an inlet ( 132/232/332 ) that is operatively connected to the expiration port and configured to be controlled to selectively supply a negative pressure level between 4 and 120 cmH 2 O to the expiration port, and an outlet ( 134/234/334 ) to exhaust gas received from the expiration port. In another case, the ventilator system includes a blower to generate positive pressure/flow to augment flow for noninvasive ventilation.

First claim

What is claimed is:

1. A ventilator system ( 400 ) for supplementing a pressurized flow of gas from an external source to a patient, comprising:
a patient circuit interface port ( 42 ) configured to be connected to a single-limb patient circuit ( 410 );
a gas delivery device including a pressurized flow of gas ( 420 ) operatively connected to the patient circuit interface port and configured to supply the pressurized flow of gas to the patient circuit interface port to generate positive pressure;
a blower ( 430 ) having an outlet ( 434 ) operatively connected to the patient circuit interface port and configured to supply a pressurized flow of air to the patient circuit interface port in addition to and as a supplement to the pressured flow of gas from primary gas delivery device;
a pressure transducer ( 428 ) configured to measure a gas pressure in the patient circuit;
at least one flow sensor ( 424 ) configured to measure a gas flow in the patient circuit; and
a controller ( 450 ) configured to control the gas delivery device and the blower in response to a pressure transducer signal indicating the measured pressure in the patient circuit and a flow sensor signal indicating the measured gas flow from the gas delivery device,
wherein the gas delivery device and the blower together provide a gas flow rate in the range of about 250 to 300 liters per minute.

2. The ventilator system ( 400 ) of claim 1 , wherein the gas delivery device includes flow control valves ( 422 ) for controlling a flow of the gas.

3. The ventilator system ( 400 ) of claim 2 , wherein the controller controls the at least one flow control valve in response to the measured gas flow from the gas delivery device.

4. The ventilator system ( 400 ) of claim 1 , further comprising a junction ( 407 ) for combining the pressurized flow of gas from the gas delivery device and the pressurized flow of air from the blower.

5. The ventilator system ( 400 ) of claim 4 , further comprising a check valve ( 436 ) provided between the outlet of the blower and the junction.

6. The ventilator system ( 400 ) of claim 4 , further comprising a pressure relief valve ( 426 ) between the patient circuit and the junction in communication with and controlled by the controller.

7. The ventilator system ( 400 ) of claim 1 , further comprising a face mask ( 20 ) with one of a passive exhalation port or an active exhalation port.

Assignees

• Garde Smita
• Arcilla Mabini
• Koninkl Philips Nv

Inventors

• Garde Smita
• Arcilla Mabini

Classifications

• A61M16/06

  Respiratory or anaesthetic masks · CPC title

• A61M2016/0039

  in the inspiratory circuit · CPC title

• A61M2202/0208

  Oxygen · CPC title

• A61M16/208

  Non-controlled one-way valves, e.g. exhalation, check, pop-off non-rebreathing valves · CPC title

• A61M16/0009

  with sub-atmospheric pressure, e.g. during expiration · CPC title