Method for selecting target settings in a medical device

• US 8,640,700 B2
• Filed: 03/23/2009
• Issued: 02/04/2014
• Est. Priority Date: 03/27/2008
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: Baker, Clark R. Jr.
• Primary Examiner(s): Anderson, Lynne
• Assistant Examiner(s): PHILIPS, BRADLEY H
• Application Number:
  US12/409,412
• Publication Number:
  US 20090241958A1
• Time in Patent Office: 1,779 Days
• Field of Search: 128/204.23, 128/204.22, 128/204.18, 128/200.24, 128/204.21, 424/9.1
• US Class Current: 128/204.23
• CPC Class Codes: A61B 5/14542 for measuring blood gases A61B5/14551 takes precedence
• 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 16/024 including calculation means, e.g. using a processor
• CPC Class Codes: A61M 16/12 by mixing different gases
• 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 2205/52 with memories providing a history of measured variating parameters of apparatus or patient
• CPC Class Codes: A61M 2205/581 by audible feedback
• CPC Class Codes: A61M 2205/582 by tactile feedback
• CPC Class Codes: A61M 2205/584 having a color code
• CPC Class Codes: A61M 2230/06 Heartbeat rate only
• CPC Class Codes: A61M 2230/205 partial oxygen pressure (P-O2)
• CPC Class Codes: A61M 2230/30 Blood pressure A61M2230/04 takes precedence
• CPC Class Codes: A61M 2230/46 Resistance or compliance of the lungs
• CPC Class Codes: A61M 2230/50 Temperature

Abstract

The disclosure provides a method for controlling the delivery of a breathing gas to a patient. The method may include regulating the delivery of the breathing gas delivered to the patient, determining a value for a first ventilation parameter, comparing the determined value of the first ventilation parameter to a pre-determined target value for the first ventilation parameter, automatically adjusting the breathing gas delivered to the patient in response to the comparison between the determined value of the first ventilation parameter and the pre-determined target value for the first ventilation parameter, and automatically determining a new target value for the first ventilation parameter based at least in part on the determined value of the first ventilation parameter.

Claims

1. A method for controlling the delivery of a breathing gas to a patient using a ventilator, the method including:

regulating the delivery of the breathing gas delivered to the patient;

determining a value of a first physiologic parameter of the patient, wherein the first physiologic parameter is a saturation of peripheral oxygen (SpO₂) of the patient;

comparing the determined value of the first physiologic parameter of the patient to a clinician-selected target physiologic value, which is a target of SpO₂ for the first physiologic parameter of the patient;

automatically adjusting the breathing gas delivered to the patient in response to the comparison between the determined value of the first physiologic parameter of the patient and the clinician-selected target physiologic value for the first physiologic parameter; and

automatically determining a new target physiologic value, which is a new target of SpO₂ for the first physiologic parameter, based at least in part on the determined value of the first physiologic parameter of the patient.

2. A method according to claim 1, wherein regulating the delivery of the breathing gas to the patient comprises regulating the fractional inspired oxygen (FiO₂) of the breathing gas delivered to the patient.

3. A method according to claim 1, wherein automatically determining a new target physiologic value for the first physiologic parameter includes analyzing a current measured value of the first physiologic parameter.

4. A method according to claim 1, wherein automatically determining a new target physiologic value for the first physiologic parameter includes analyzing one or more recent measured values of the first physiologic parameter.

5. A method according to claim 1, wherein automatically determining a new target physiologic value for the first physiologic parameter includes analyzing a disease state of the patient.

6. A method according to claim 1, wherein automatically determining a new target physiologic value for the first physiologic parameter includes analyzing a disease course of the patient.

7. A method according to claim 1, wherein automatically determining a new target physiologic value for the first physiologic parameter includes analyzing a treatment course of the patient.

8. A method according to claim 1, further comprising:

determining a value of a second physiologic parameter, wherein the second physiologic parameter includes one or more patient respiratory parameters; and

automatically determining a new target physiologic value for the first physiologic parameter based at least in part on both the determined value of the first physiologic parameter of the patient and the determined value of the second physiologic parameter.

9. A method according to claim 1, further comprising:

determining a value of a second physiologic parameter, wherein the second physiologic parameter includes one or more patient cardiovascular parameters; and

automatically determining a new target physiologic value for the first physiologic parameter based at least in part on both the determined value of the first physiologic parameter of the patient and the determined value of the second physiologic parameter.

10. A method according to claim 1, further comprising:

determining a value of a second physiologic parameter, wherein the second physiologic parameter includes a measurement related to the operation of a gas delivery system; and

automatically determining a new target physiologic value for the first physiologic parameter based at least in part on both the determined value of the first physiologic parameter of the patient and the determined value of the second physiologic parameter.

11. A method according to claim 1, further comprising:

setting a target value for the first physiologic parameter to the determined new target physiologic value upon receiving a user input.

12. A method according to claim 1, further comprising:

determining a value of a second physiologic parameter selected from the group consisting of;

body temperature and blood pH level; and

automatically determining a new target physiologic value for the first physiologic parameter based at least in part on the determined value of the second physiologic parameter of the patient.

13. A method according to claim 1, wherein the new target physiologic value overrides the clinician-selected target physiologic value.

14. A system for delivering breathing gas to a patient, the system comprising:

a gas delivery control system configured to control the breathing gas delivered to the patient;

a parameter module configured to determine a value for a first physiologic parameter of the patient, wherein the first physiologic parameter of the patient is determined by measuring a saturation of peripheral oxygen (SpO2) of the patient;

the parameter module configured to compare the determined value of the first physiologic parameter to a clinician-selected target physiologic value, which is a target of SpO₂ for the first physiologic parameter;

the gas delivery control system configured to automatically adjust the breathing gas delivered to the patient in response to the comparison between the determined value of the first physiologic parameter and the clinician-selected target physiologic value for the first physiologic parameter; and

the parameter module configured to automatically determine a new target physiologic value, which is a new target of SpO₂ for the first physiologic parameter, based at least in part on the determined value of the first physiologic parameter.

15. A system according to claim 14, further comprising the gas delivery control system configured to regulate the fractional inspired oxygen (FiO₂) of the breathing gas delivered to the patient.

16. A system according to claim 14, further comprising the parameter module configured to automatically determine a new target physiologic value for the first physiologic parameter based at least on analysis of a current measured value of the first physiologic parameter.

17. A system according to claim 14, further comprising the parameter module configured to automatically determine a new target physiologic value for the first physiologic parameter based at least on analysis of one or more recent measured values of the first physiologic parameter.

18. A system according to claim 14, further comprising the parameter module configured to automatically determine a new target physiologic value for the first physiologic parameter based at least on analysis of a disease state of the patient.

19. A system according to claim 14, further comprising the parameter module configured to automatically determine a new target physiologic value for the first physiologic parameter based at least on analysis of a disease course of the patient.

20. A system according to claim 14, further comprising the parameter module configured to automatically determine a new target physiologic value for the first physiologic parameter based at least on analysis of a treatment course of the patient.

21. A system according to claim 14, further comprising:

the parameter module configured to determine a value of a second physiologic parameter, wherein the second physiologic parameter includes one or more patient respiratory parameters; and

the parameter module configured to automatically determine a new target physiologic value for the first physiologic parameter based at least in part on both the determined value of the first physiologic parameter of the patient and the determined value of the second physiologic parameter.

22. A system according to claim 14, further comprising:

the parameter module configured to determine a value of a second physiologic parameter, wherein the second physiologic parameter includes one or more patient cardiovascular parameters; and

the parameter module configured to automatically determine a new target physiologic value for the first physiologic parameter based at least in part on both the determined value of the first physiologic parameter of the patient and the determined value of the second physiologic parameter.

23. A system according to claim 14, further comprising:

the parameter module configured to determine a value of a second physiologic parameter, wherein the second physiologic parameter includes a measurement related to the operation of a gas delivery system; and

the parameter module configured to automatically determine a new target physiologic value for the first physiologic parameter based at least in part on both the determined value of the first physiologic parameter of the patient and the determined value of the second physiologic parameter.

24. A system according to claim 14, further comprising the parameter module configured to set a target value for the first physiologic parameter to the determined new target physiologic value upon receiving a user input.

25. A system according to claim 14, wherein the new target physiologic value overrides the clinician-selected target physiologic value.

26. A computer-readable storage medium storing a set of instructions executable by a processor of a computing system, the set of instructions for controlling the delivery of a breathing gas to a patient, the set of instructions comprising:

instructions that when executed by the processor cause the computing system to regulate the delivery of the breathing gas delivered to the patient;

instructions for determining a value of a first physiologic parameter of the patient, wherein the first physiologic parameter of the patient is determined by measuring a saturation of peripheral oxygen (SpO₂) in the patient;

instructions for comparing the determined value of the first physiologic parameter of the patient to a clinician-selected target physiologic value, which is a target of SpO₂ for the first physiologic parameter;

instructions for automatically adjusting the breathing gas delivered to the patient in response to the comparison between the determined value of the first physiologic parameter of the patient and the clinician-selected target physiologic value for the first physiologic parameter; and

instructions for automatically determining a new target physiologic value, which is a new target of SpO₂ for the first physiologic parameter, based at least in part on the determined value of the first physiologic parameter of the patient.

27. A computer-readable storage medium according to claim 26, wherein the set of instructions further comprises instructions for overriding the clinician-selected target physiologic value with the new target physiologic value.

28. A breathing assistance system, comprising:

means for regulating the delivery of the breathing gas delivered to the patient;

means for determining a value of a first physiologic parameter of the patient, wherein the first physiologic parameter of the patient is determined by measuring a saturation of peripheral oxygen (SpO₂) of the patient;

means for comparing the determined value of the first physiologic parameter of the patient to a clinician-selected target physiologic value, which is a target of SpO₂ for the first physiologic parameter;

means for automatically adjusting the breathing gas delivered to the patient in response to the comparison between the determined value of the first physiologic parameter of the patient and the clinician-selected target physiologic value for the first physiologic parameter; and

means for automatically determining a new target physiologic value, which is a new target of SpO₂ for the first physiologic parameter, based at least in part on the determined value of the first physiologic parameter of the patient.