Automated Inspiratory Muscle Training for Patients Receiving Mechanical Ventilation

• US 20090229611A1
• Filed: 03/10/2009
• Published: 09/17/2009
• Est. Priority Date: 03/10/2008
• Status: Active Grant

• Current Assignee: University of Florida Research Foundation, Incorporated (State University System of Florida)
• Original Assignee: University of Florida Research Foundation, Incorporated (State University System of Florida)
• Inventors: Martin, Anatole D., Banner, Michael J., Gabrielli, Andrea, Euliano, Neil Russell II
• Granted Patent: US 8,307,827 B2
• Time in Patent Office: Days
• US Class Current: 128/204.210
• CPC Class Codes: A61B 5/087 Measuring breath flow
• CPC Class Codes: A61B 5/412 Detecting or monitoring sepsis
• CPC Class Codes: A61M 16/0057 Pumps therefor
• CPC Class Codes: A61M 16/026 specially adapted for predicting, e.g. for determining an information representative of a flow limitation during a ventilation cycle by using a root square technique or a regression analysis
• CPC Class Codes: A61M 16/20 Valves specially adapted to medical respiratory devices
• CPC Class Codes: A61M 16/204 used for inhalation control
• CPC Class Codes: A61M 16/205 used for exhalation control
• CPC Class Codes: A61M 2016/0027 pressure meter
• CPC Class Codes: A61M 2016/0039 in the inspiratory circuit
• CPC Class Codes: A61M 2016/0042 in the expiratory circuit
• CPC Class Codes: A61M 2205/502 User interfaces, e.g. screens or keyboards
• CPC Class Codes: A61M 2230/005 Parameter used as control input for the apparatus
• CPC Class Codes: A61M 2230/40 Respiratory characteristics

Abstract

A system and method for automated inspiratory muscle strength exercise includes software for setting a mechanical ventilator for a pressure regulated breath with an initial pressure target that is at the highest pressure setting a patient can tolerate and increasing the pressure target as tolerated.

Claims

1. A system for automated inspiratory muscle strength training during mechanical ventilation comprising:

a gas delivery device, wherein said gas deliver device comprises an inhalation assembling providing inspiratory air flow and a valve that imposes a negative pressure during inhalation; and

a control module for instructing the gas delivery device to provide a pressure regulated breath at a predetermined inspiratory training pressure.

2. The system of claim 1, further comprising a mechanical ventilator, wherein the gas delivery device is removably integrated with the mechanical ventilator.

3. The system of claim 1, wherein the gas delivery device is a mechanical ventilator.

4. A method for inspiratory muscle strength training comprising:

providing a sensing assembly and gas delivery device;

assessing patient respiratory parameters via the sensing assembly;

deriving an inspiratory training stimulus using the assessed parameters;

developing a regimen for inspiratory muscle strength training using the inspiratory training stimulus; and

implementing the regimen via the gas delivery assembly.

5. The method of claim 4, wherein the gas delivery assembly is a mechanical ventilator.

6. The method of claim 4, wherein the derived inspiratory training stimulus is pressure between 1 to 80 cm of H₂O.

7. the method of claim 6, wherein the derived inspiratory training pressure is between 2-20 cm of H₂O.

8. The method of claim 4, wherein the regimen for inspiratory muscle strength training comprises establishing a number of breaths to be performed at the inspiratory training stimulus, wherein the number of breaths is between 12-40 breaths a day.

9. The method of claim 4, wherein the inspiratory training stimulus is a target power of breathing.

11. The media of claim 9, wherein the gas delivery assembly is a mechanical ventilator.

12. The media of claim 9, wherein the inspiratory training stimulus is a pressure between 1 to 80 cm of H₂O.

13. The media of claim 11, wherein the inspiratory training pressure is between 2-20 cm of H₂O.

10. One or more computer-readable media having computer-useable instructions embodied thereon for performing a method of inspiratory muscle strength training, the method comprising:

providing a gas delivery device having an inhalation assembly that provides inspiratory air flow to a patient;

imposing delivery of inspiratory air flow using an inspiratory training stimulus; and

controlling the inhalation assembly to deliver inspiratory air flow using an inspiratory during an entire inhalation act for every breath by the patient.

14. One or more computer-readable media having computer-useable instructions embodied thereon for performing a method of inspiratory muscle strength training, the method comprising:

receiving respiratory parameters of a patient;

calculating an inspiratory training stimulus variable from the respiratory parameters; and

providing said inspiratory training stimulus variable to a gas delivery device, wherein said gas delivery device delivers inspiratory air flow to the patient and comprises settings for adjusting the inspiratory airflow; and

adjusting the gas delivery settings to administer air flow to the patient to impose negative pressure on the patient during inhalation at the inspiratory training stimulus variable.

15. The media of claim 14, wherein the gas delivery device is a mechanical ventilator.

16. The media of claim 14, wherein the inspiratory training stimulus is a pressure between 1 to 80 cm of H₂O.

17. The media of claim 16, wherein the inspiratory training pressure is between 2-20 cm of H₂O.

18. The media of claim 14, wherein the inspiratory training stimulus is a target power of breathing.

19. The media of claim 14, wherein the method further comprises:

receiving a second set of respiratory parameters of the patient comprising a response of the patient to the inspiratory training stimulus;

calculating a second inspiratory training stimulus variable from the second set of respiratory parameters;

providing said second inspiratory training stimulus variable to the gas delivery device;

adjusting the gas delivery settings to administer air flow to the patient to impose negative pressure on the patient during inhalation at the second inspiratory training stimulus variable; and

repeating the steps herein as necessary.