# US 2014/0190485 A1 · System and method for detecting minimal ventilation support with volume ventilation plus software and remote monitoring > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0190485 A1 - Document ID: US20140190485A1 - Status: Published application - Kind: A1 - Application number: 13/738,495 - Filed: 2013-01-10 - Published: 2014-07-10 - Earliest claimed: 2013-01-10 - Assignees: Covidien LP - Applicants: Covidien LP - Inventors: Gary Milne; Andrew Malcolmson - Web page: https://patentgrep.com/patent/US20140190485A1 ## CPC - A61M 16/0051: {with alarm devices} - A61M 16/024: {including calculation means, e.g. using a processor} - A61M 16/0063: {Compressors} - A61M 2016/0027: {pressure meter} - A61M 2016/0039: {in the inspiratory circuit} - A61M 2016/0042: {in the expiratory circuit} - A61M 2205/3306: Optical measuring means - A61M 2205/3553: remote, e.g. between patient's home and doctor's office - A61M 2205/3592: using telemetric means, e.g. radio or optical transmission - A61M 2205/502: User interfaces, e.g. screens or keyboards - A61M 2205/52: with memories providing a history of measured variating parameters of apparatus or patient - A61M 2205/581: by audible feedback - A61M 2205/583: by visual feedback - A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)} ## Abstract Methods and systems are provided that determine whether a patient is receiving minimal support from a ventilator. In one embodiment, a ventilation system may determine a value of a peak inspiratory pressure (PIP) and a value of a positive end-expiratory pressure (PEEP) of a patient. The ventilation system may determine a pressure differential between the value of PIP and the value of PEEP and compare the pressure differential to a threshold. The ventilation system may determine that the patient is receiving minimal support if the pressure differential is below the threshold. Further, the ventilation system may provide an indication of the detection of minimal support. ## Claims ### Claim 1 A method, comprising: receiving a signal from at least one sensor of a ventilation system, wherein the ventilation system is configured to deliver a target tidal volume to a patient; determining a value of peak inspiratory pressure (PIP) and a value of positive end-expiratory pressure (PEEP) for the patient based at least in part upon the signal; determining a pressure to ventilate of the patient, wherein the pressure to ventilate is a difference between the values of PIP and PEEP; determining whether the pressure to ventilate is below a threshold for minimal support of the patient; and providing an indication of minimal support detected in response to determining that the pressure to ventilate is below the threshold for minimal support. ### Claim 2 (depends on 1) The method of claim 1, wherein providing the indication of minimal support comprises providing a visual indication. ### Claim 3 (depends on 1) The method of claim 1, wherein determining whether the pressure to ventilate is below the threshold for minimal support comprises determining whether the pressure to ventilate is below the threshold for minimal support for a predetermined percentage of a predetermined period of time. ### Claim 4 (depends on 3) The method of claim 3, comprising displaying a graph illustrating a percentage of time that the pressure to ventilate is below the threshold for minimal support against time. ### Claim 5 (depends on 1) The method of claim 1, comprising determining whether the values of PIP and PEEP are both below respective thresholds. ### Claim 6 (depends on 5) The method of claim 5, comprising providing a recommendation for the patient to perform a spontaneous breathing trial in response to determining that the values of PIP and PEEP are both above their respective thresholds. ### Claim 7 (depends on 5) The method of claim 5, comprising providing a recommendation to increase the target tidal volume delivered to the patient by the ventilation system in response to determining that the value of PIP or the value of PEEP is below its respective threshold. ### Claim 8 A ventilation system, comprising: one or more sensors configured to generate one or more signals representative of a respiratory function of a patient; a ventilator configured to receive the one or more signals from the one or more sensors and to be operatively coupled to the patient, wherein the ventilator comprises: an inspiratory module configured to deliver a target tidal volume to the patient; a processor configured to: determine a value of peak inspiratory pressure (PIP) and a value of positive end-expiratory pressure (PEEP) for the patient based at least in part upon the one or more signals; determine whether a pressure to ventilate is below a threshold for minimal support of the patient, wherein the pressure to ventilate is a difference between the value of PIP and the value of PEEP; and a display configured to display an indication of minimal support detected when the processor determines that the value of the pressure to ventilate is below the threshold for minimal support. ### Claim 9 (depends on 8) The ventilation system of claim 8, wherein the display is configured to display the indication of minimal support detected and the value of PIP or the value of PEEP with the same color, shading, or size. ### Claim 10 (depends on 8) The ventilation system of claim 8, wherein the display is configured to display the indication of minimal support detected when the processor determines that the value of the pressure to ventilate below the threshold for minimal support for a predetermined percentage of a predetermined period of time. ### Claim 11 (depends on 10) The ventilation system of claim 10, wherein the display is configured to display a graph illustrating a percentage of time that the value of the pressure to ventilate is below the threshold for minimal support against time. ### Claim 12 (depends on 11) The ventilation system of claim 11, wherein the processor is configured to compare the values of both PIP and PEEP to respective thresholds, and wherein the display is configured to display a recommendation to a user based at least in part upon the comparison. ### Claim 13 (depends on 12) The ventilation system of claim 12, wherein the recommendation comprises a recommendation to deliver a spontaneous breathing trial to the patient if the processor determines that the values of both PIP and PEEP are above their respective thresholds or a recommendation to increase the target tidal volume delivered to the patient if the processor determines that the value of PIP or the value of PEEP is below its respective threshold. ### Claim 14 (depends on 8) The ventilation system of claim of claim 8, wherein the ventilator is configured to operate in a volume control mode or a volume support mode. ### Claim 15 (depends on 8) The ventilation system of claim 8, wherein the threshold for minimal support is approximately seven centimeters of water (7 cm H2O). ### Claim 16 A ventilator, comprising: an inspiratory module configured to deliver a target tidal volume to a patient; a processor configured to calculate a pressure to ventilate value of a patient and to determine whether the pressure to ventilate value is below a minimal support threshold for a predetermined percentage of a predetermined period of time; and a display configured to display an indication of minimal support detected when the processor determines that the pressure to ventilate value is below the minimal support threshold for the predetermined percentage of the predetermined period of time. ### Claim 17 (depends on 16) The ventilator of claim 16, wherein the indication of minimal support detected comprises a list of suggested actions to a user. ### Claim 18 (depends on 17) The ventilator of claim 17, wherein the processor is configured to compare one or more physiological parameters of the patient to respective threshold ranges and to cause the display to display a recommendation to a user based at least in part upon the comparisons. ### Claim 19 (depends on 18) The ventilator of claim 18, wherein the recommendation comprises a recommendation to increase the target tidal volume delivered to the patient. ### Claim 20 (depends on 18) The ventilator of claim 18, wherein the recommendation comprises a recommendation to deliver a spontaneous breathing trial to the patient.