Medical Ventilator With Integrated Oximeter Data

• US 20120071729A1
• Filed: 09/21/2010
• Published: 03/22/2012
• Est. Priority Date: 09/21/2010
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Nellcor Puritan Bennett LLC (Medtronic Plc)
• Inventors: Doyle, Peter, Vandine, Joseph Doug, Sanborn, Warren, Graboi, Dan
• Granted Patent: US 8,554,298 B2
• Time in Patent Office: Days
• US Class Current: 600/301
• CPC Class Codes: A61B 5/082 Evaluation by breath analysis, e.g. determination of the chemical composition of exhaled breath A61B5/083, A61B5/091 take precedence
• CPC Class Codes: A61B 5/085 Measuring impedance of respiratory organs or lung elasticity
• CPC Class Codes: A61B 5/1455 using optical sensors, e.g. spectral photometrical oximeters
• CPC Class Codes: A61B 5/14551 for measuring blood gases
• CPC Class Codes: A61B 5/4836 Diagnosis combined with treatment in closed-loop systems or methods A61B5/0036 takes precedence
• CPC Class Codes: A61M 16/0051 with alarm devices
• CPC Class Codes: A61M 16/0057 Pumps therefor
• CPC Class Codes: A61M 16/0063 Compressors
• CPC Class Codes: A61M 16/024 including calculation means, e.g. using a processor
• CPC Class Codes: A61M 16/0465 Tracheostomy tubes; Devices for performing a tracheostomy; Accessories therefor, e.g. masks, filters
• CPC Class Codes: A61M 16/0666 Nasal cannulas or tubing devices for improving normal breathing through the nose A61F5/08; nose filters A62B23/06; outside holding devices A61M25/02
• CPC Class Codes: A61M 16/0875 Connecting tubes
• CPC Class Codes: A61M 2016/0027 pressure meter
• CPC Class Codes: A61M 2016/1025 the O2 concentration
• CPC Class Codes: A61M 2205/18 with alarm
• CPC Class Codes: A61M 2205/505 Touch-screens; Virtual keyboard or keypads; Virtual buttons; Soft keys; Mouse touches
• CPC Class Codes: A61M 2230/205 partial oxygen pressure (P-O2)
• CPC Class Codes: A61M 2230/435 partial O2 pressure (P-O2)

Abstract

This disclosure describes systems and methods for managing the ventilation of a patient being ventilated by a medical ventilator. The disclosure describes a novel approach of displaying ventilator information integrated with oximeter information. The disclosure further describes a novel approach of alarming based on the integration of ventilator information with oximeter information.

Claims

1. A method for managing the ventilation of a patient being ventilated by a medical ventilator, the method comprising:

monitoring a patient during ventilation with an oximeter;

monitoring an oxygen saturation level of blood in the patient during ventilation;

monitoring a PEEP level of the patient;

graphing the oxygen saturation level of the blood in the patient as a function of the PEEP level versus time; and

displaying a graph of the function versus time.

2. The method of claim 1, wherein the graph is displayed by an oximeter display.

3. The method of claim 1, wherein the graph is displayed by a ventilator display.

4. The method of claim 1, further comprising displaying at least one preset threshold on the graph.

5. The method of claim 1, further comprising:

determining that the function is outside a preset threshold;

determining that the PEEP level of the patient dropped prior to a drop in the oxygen saturation level of the blood in the patient; and

executing an alarm.

6. The method of claim 1, further comprising:

determining that the function is outside a preset threshold; and

executing an alarm.

7. The method of claim 1, further comprising:

determining that the function is outside a preset threshold;

determining that a drop in the oxygen saturation level of the blood in the patient is independent of a change in the PEEP; and

executing an alarm.

8. The method of claim 1, wherein the step of graphing the oxygen saturation level of the blood in the patient as a function of the PEEP level versus time comprises converting raw PEEP data and raw oxygen saturation level data into a plotted graph and into displayable information.

9. The method of claim 1, further comprising:

monitoring a fractional inspired oxygen level of the patient;

graphing the oxygen saturation level of the blood in the patient as a function of the fractional inspired oxygen level versus time; and

displaying on the graph the oxygen saturation level of the blood in the patient as a function of the fractional inspired oxygen level versus time.

10. A method for managing the ventilation of a patient being ventilated by a medical ventilator, the method comprising:

monitoring a patient during ventilation with an oximeter;

monitoring an oxygen saturation level of blood in the patient during ventilation based on readings from the oximeter;

monitoring a PEEP of the patient;

graphing the oxygen saturation level of the blood in the patient versus time;

graphing the PEEP level of the patient versus time; and

displaying both the oxygen saturation level of the blood in the patient versus time and the PEEP level of the patient versus time on one graph.

11. The method of claim 10, wherein the graph is displayed by an oximeter display.

12. The method of claim 10, wherein the graph is displayed by a ventilator display.

13. The method of claim 10, further comprising displaying at least one preset threshold on the graph.

14. The method of claim 10, further comprising:

determining that at least one of the PEEP level and the oxygen saturation level of the blood in the patient is outside of a preset threshold; and

executing an alarm.

15. The method of claim 10, further comprising:

determining that at least one of the PEEP level and the oxygen saturation level of the blood in the patient is outside of a preset threshold;

determining that a drop in the oxygen saturation level of the blood in the patient is independent of a change in the PEEP; and

executing a first oxygen saturation alarm.

16. The method of claim 10, further comprising:

determining that at least one of the PEEP level and the oxygen saturation level of the blood in the patient is outside of a preset threshold;

determining that the PEEP level of the patient dropped prior to a drop in the oxygen saturation level of the blood in the patient; and

executing a 2^nd type SpO₂ alarm.

17. The method of claim 10, wherein the step of graphing the oxygen saturation level of the blood in the patient versus time comprises converting oxygen saturation level data into a plotted graph and into displayable information.

18. The method of claim 10, wherein the step of graphing the PEEP level of the patient versus time further comprises converting PEEP data into the plotted graph and into displayable information.

19. A method for managing the ventilation of a patient being ventilated by a medical ventilator, the method comprising:

monitoring a patient during ventilation with an oximeter;

monitoring an oxygen saturation level of blood in the patient during ventilation based on readings from the oximeter;

monitoring the PEEP of the patient;

monitoring the fractional inspired oxygen level of the patient;

graphing the oxygen saturation level of the blood in the patient versus time;

graphing the PEEP level of the patient versus time;

graphing the fractional inspired oxygen level of the patient versus time; and

displaying the oxygen saturation level of the blood in the patient versus time, the fractional inspired oxygen level of the patient versus time, and the PEEP level of the patient versus time on one graph.

20. A computer-readable medium having computer-executable instructions for performing a method for managing the ventilation of a patient being ventilated by a medical ventilator, the method comprising:

repeatedly monitoring a patient during ventilation with an oximeter;

repeatedly monitoring an oxygen saturation level of blood in the patient during ventilation;

repeatedly monitoring a PEEP level of the patient;

repeatedly graphing the oxygen saturation level of the blood in the patient in a mathematical relationship to the PEEP level versus time; and

repeatedly displaying a graph of the mathematical relationship versus time.

21. A medical ventilator system, comprising:

means for repeatedly monitoring a patient during ventilation with an oximeter;

means for repeatedly monitoring an oxygen saturation level of blood in the patient during ventilation;

means for repeatedly monitoring a PEEP level of the patient;

means for repeatedly graphing the oxygen saturation level of the blood in the patient in a as a mathematical relationship to the PEEP level versus time; and

means for repeatedly displaying a graph of the mathematical relationship versus time.