METHODS AND SYSTEMS FOR GATING USER INITIATED INCREASES IN OXYGEN CONCENTRATION DURING VENTILATION

• US 20130104896A1
• Filed: 10/31/2011
• Published: 05/02/2013
• Est. Priority Date: 10/31/2011
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Nellcor Puritan Bennett LLC (Medtronic Plc)
• Inventors: Kimm, Gardner, Graboi, Dan
• Granted Patent: US 9,089,657 B2
• Time in Patent Office: Days
• US Class Current: 128/204.23
• CPC Class Codes: A61M 16/00 Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes stimulating the respiratory movement by mechanical, pneumatic or electrical means, iron lungs combined with gas breathing means A61H31/00
• 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 16/0833 T- or Y-type connectors, e.g. Y-piece
• CPC Class Codes: A61M 16/105 Filters A61M16/047, A61M16/22 take precedence; water traps A61M16/08
• CPC Class Codes: A61M 16/12 by mixing different gases
• CPC Class Codes: A61M 2016/0027 pressure meter
• CPC Class Codes: A61M 2202/0007 introduced into the body
• CPC Class Codes: A61M 2202/0208 Oxygen
• CPC Class Codes: A61M 2205/505 Touch-screens; Virtual keyboard or keypads; Virtual buttons; Soft keys; Mouse touches
• CPC Class Codes: A61M 2230/005 Parameter used as control input for the apparatus
• CPC Class Codes: A61M 2230/435 partial O2 pressure (P-O2)

Abstract

This disclosure describes systems and methods for ventilating a patient. The disclosure describes novel systems and methods for preventing and/or reducing the likelihood of a patient from receiving too much oxygen during a selected limited increase in oxygen concentration for a set period of time.

Claims

1. A method for ventilating a patient with a ventilator comprising:

delivering a regular oxygen concentration to a patient during ventilation;

receiving a user selection of a limited oxygen concentration increase for a set time period;

delivering a selected oxygen concentration above the regular oxygen concentration based on the received user selection;

monitoring an oxygen saturation level of blood in the patient during the step of delivering the selected oxygen concentration;

determining that the oxygen saturation level of the blood exceeds a predetermined threshold prior to expiration of the set time period for the limited oxygen concentration increase; and

delivering an adjusted oxygen concentration to the patient based on the step of determining.

2. The method of claim 1, wherein the limited oxygen concentration increase is about a 20% increase in fractional inspired oxygen, and

wherein the set time period is about two minutes.

3. The method of claim 1, wherein the step of monitoring is performed by an oximeter.

4. The method of claim 1, wherein the patient is selected from a group comprising a preterm infant and an infant.

5. The method of claim 1, wherein the predetermined threshold is one of a group comprising a SpO₂ level, a percent increase in SpO₂, and an increase in slope of SpO₂.

6. The method of claim 1, wherein the predetermined threshold is a 95% oxygen saturation level in the blood of the patient.

7. The method of claim 1, wherein the adjusted oxygen concentration is the regular oxygen concentration.

8. The method of claim 1, wherein the adjusted oxygen concentration reduces the selected oxygen concentration by at least 10%.

9. The method of claim 8, further comprising:

reducing the set time period by at least 10% based on the step of determining.

10. The method of claim 1, further comprising:

reducing the set time period by at least 10% based on the step of determining.

11. The method of claim 1, wherein the step of delivering the adjusted oxygen concentration to the patient prevents at least one of lung and retina injury in the patient.

12. The method of claim 1, wherein the step of delivering the adjusted oxygen concentration to the patient gradually reduces the selected oxygen concentration until an oxygen concentration delivered to the patient reaches the adjusted oxygen concentration.

13. The method of claim 1, wherein the step of delivering the adjusted oxygen concentration to the patient immediately reduces the selected oxygen concentration to the adjusted oxygen concentration.

14. The method of claim 1, further comprising:

displaying at least one of a SpO₂ concentration of the patient during the step of delivering the selected oxygen concentration, an early termination of the step of delivering the selected oxygen concentration, a reduced set time period for the limited oxygen concentration increase, the adjusted oxygen concentration, and/or the predetermined threshold.

15. A ventilator system, comprising:

a user interface;

an Oxygen Increase Option selectable via the user interface, the Oxygen Increase Option instructs a ventilator system to deliver a selected oxygen concentration above a regular oxygen concentration during ventilation of a patient for a set time period;

at least one processor; and

at least one memory, communicatively coupled to the at least one processor and containing instructions for operating the ventilator system after receiving a user selection of the Oxygen Increase Option that, when executed by the at least one processor, perform a method comprising;

monitoring an oxygen saturation level of blood in the patient;

determining that the oxygen saturation level of the blood exceeds a predetermined threshold prior to expiration of the set time period; and

delivering an adjusted oxygen concentration to the patient based on the step of determining.

16. The method of claim 15, wherein the predetermined threshold is one of a group comprising a SpO₂ level, a percent increase in SpO₂, and an increase in slope of SpO₂.

17. The method of claim 15, wherein the adjusted oxygen concentration is the regular oxygen concentration.

18. The method of claim 15, further comprising:

reducing the set time period by at least 10% based on the step of determining.

19. The method of claim 15, wherein the step of delivering the adjusted oxygen concentration to the patient gradually reduces the selected oxygen concentration until an oxygen concentration delivered to the patient reaches the adjusted oxygen concentration.

20. The method of claim 15, further comprising:

displaying at least one of a SpO₂ concentration of the patient, a reduced set time period for the Oxygen Increase Option, the adjusted oxygen concentration, and/or the predetermined threshold, and

wherein the user interface is a graphical user interface.

21. A computer-readable medium having computer-executable instructions for performing a method of ventilating a patient with a ventilator, the method comprising:

repeatedly delivering a regular oxygen concentration to a patient during ventilation;

repeatedly receiving a user selection of a limited oxygen concentration increase for a set time period;

repeatedly delivering a selected oxygen concentration above the regular oxygen concentration based on the received user selection;

repeatedly monitoring an oxygen saturation level of blood in the patient during the step of delivering the selected oxygen concentration;

repeatedly determining that the oxygen saturation level of the blood exceeds a predetermined threshold prior to expiration of the set time period for the limited oxygen concentration increase; and

repeatedly delivering an adjusted oxygen concentration to the patient based on the step of determining.

22. A ventilator system, comprising:

means for delivering a regular oxygen concentration to a patient during ventilation;

means for receiving a user selection of a limited oxygen concentration increase for a set time period;

means for delivering a selected oxygen concentration above the regular oxygen concentration based on the received user selection;

means for monitoring an oxygen saturation level of blood in the patient during the step of delivering the selected oxygen concentration;

means for determining that the oxygen saturation level of the blood exceeds a predetermined threshold prior to expiration of the set time period for the limited oxygen concentration increase; and

means for delivering an adjusted oxygen concentration to the patient based on the step of determining.