Methods and systems for manual ventilation
AssigneeGE Precision Healthcare LLC
InventorsElvin Cyriac, Nandakumar Jegathala Raju, Hariprasad A. Kodancha, Tom J. Haggblom
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Abstract
A method for controlling a medical ventilator including a manual ventilation circuit, a mechanical ventilation circuit, and a patient circuit, includes: obtaining an encoder value based on a pressure limit of a mechanical adjustable pressure limit valve (APLV) in the manual ventilation circuit; controlling a pressure limit of an electro-pneumatic APLV in the manual ventilation circuit based on the encoder value, the electro-pneumatic APLV being pneumatically connected in parallel to the mechanical APLV.
Claims25
A method for controlling a medical ventilator, the medical ventilator comprising a manual ventilation circuit, a mechanical ventilation circuit, and a patient circuit, the method comprising:
- obtaining an encoder value based on a pressure limit of a mechanical adjustable pressure limit valve (APLV) in the manual ventilation circuit;
- controlling a pressure limit of an electro-pneumatic APLV in the manual ventilation circuit based on the encoder value, the electro-pneumatic APLV being pneumatically connected in parallel to the mechanical APLV.
A medical ventilator comprising:
- a manual ventilation circuit configured to provide manual ventilation to a patient, the manual ventilation circuit comprising:
- a bag configured to be operated by a user;
- a mechanical adjustable pressure limit valve (APLV);
- a electro-pneumatic APLV pneumatically connected in parallel with the mechanical APLV;
- an encoder configured to output an encoder value based on a pressure limit of the mechanical APLV;
- and
- a shutoff valve between the bag and the mechanical APLV;
- a mechanical ventilation circuit configured to provide mechanical ventilation to a patient through bellows;
- a patient circuit configured to deliver gas to and remove gas from a patient's lungs;
- a memory storing instructions;
- and
- at least one processor configured to execute the instructions to:
- control a pressure limit of the electro-pneumatic APLV based on the encoder value.
A medical ventilator system comprising:
- a manual ventilation circuit comprising:
- a bag configured to be operated by a user;
- and
- a user adjustable encoder configured to output an encoder value based on a pressure limit of a first adjustable pressure limit valve (APLV) in the manual ventilation circuit;
- a mechanical ventilation circuit comprising an electronically controlled mechanical ventilator;
- a patient circuit configured to deliver gas to and remove gas from a patient's lungs;
- a first flow path provided between the manual ventilation circuit and the patient circuit;
- a second flow path provided between the mechanical ventilation circuit and the patient circuit;
- a first electronically controlled two-way valve having a first position providing the first flow path and a second position providing the second flow path;
- a memory storing instructions;
- and
- a processor configured to execute the instruction to:
- control a maximum pressure limit in the first flow path based on the encoder value;
- control the first two-way valve based on the encoder value.
Dependencies are inferred from the claim text.