Use of Multiple Spontaneous Breath Types To Promote Patient Ventilator Synchrony

• US 20120216811A1
• Filed: 02/28/2011
• Published: 08/30/2012
• Est. Priority Date: 02/28/2011
• Status: Abandoned Application

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Nellcor Puritan Bennett LLC (Medtronic Plc)
• Inventors: Kimm, Gardner, Doyle, Peter
• Application Number:
  US13/036,825
• Publication Number:
  US 20120216811A1
• Time in Patent Office: Days
• US Class Current: 128/204.23
• CPC Class Codes: A61M 16/0003 Accessories therefor, e.g. sensors, vibrators, negative pressure
• 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 2016/0018 electrical
• CPC Class Codes: A61M 2016/0027 pressure meter
• CPC Class Codes: A61M 2016/0036 in the breathing tube and used in both inspiratory and expiratory phase
• CPC Class Codes: A61M 2205/3303 Using a biosensor
• 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 2230/20 Blood composition characteristics
• CPC Class Codes: A61M 2230/43 Composition of exhalation
• CPC Class Codes: G16H 20/40 relating to mechanical, radiation or invasive therapies, e.g. surgery, laser therapy, dialysis or acupuncture
• CPC Class Codes: G16H 40/63 for local operation

Abstract

The present disclosure combines the advantages of a hybrid mode of ventilation with an automatic determination of an appropriate spontaneous breath type in response to one or more patient based criteria. Specifically, when the ventilator is delivering a spontaneous breath type, a determination may be made as to whether predetermined ventilatory criteria have been met. Based on the determination the ventilator may deliver one of any number of spontaneous breath types.

Claims

1. A method for operating a ventilator, the method comprising:

receiving a user selection of two or more spontaneous breath types from a plurality of spontaneous breath types;

monitoring one or more patient respiratory parameters during ventilation of a patient;

comparing at least one monitored patient respiratory parameter to a set of predetermined threshold criteria; and

delivering a breath of the selected one of the two or more selected spontaneous breath types to the patient based on results of the comparing operation.

2. The method of claim 1, wherein the ventilator is operating in a Hybrid Mode.

3. The method of claim 2, wherein the Hybrid Mode delivers a mandatory breath if a patient effort is not detected within a set time based on the desired respiratory rate.

4. The method of claim 1, wherein the patient respiratory parameters comprise:

work of breathing, patient effort, carbon dioxide, inspiratory pressure, expiratory pressure, respiratory rate, inspiratory volume, expiratory volume, body weight, minute ventilation, lung/chest wall compliance and target pressure.

5. The method of claim 1, wherein the spontaneous breath types comprise:

proportional assist (PA), Pressure Support (PS) and volume support (VS) breath types.

6. The method of claim 1, wherein the predetermined threshold criteria may be based one or more of the patient respiratory parameters.

7. The method of claim 1, wherein patient respiratory parameters are monitored during exhalation.

8. The method of claim 1, wherein patient respiratory parameters are monitored during inhalation and exhalation.

9. A ventilatory system for operating a ventilator in Hybrid Mode, comprising:

at least one processor; and

at least one memory, communicatively coupled to the at least one processor and containing instructions for a plurality of spontaneous breath types and instructions for operating the ventilator in a Hybrid Mode that, when executed by the at least one processor, perform a method comprising;

monitoring one or more patient respiratory parameters during ventilation of a patient;

comparing at least one monitored patient respiratory parameter to a set of predetermined threshold criteria;

selecting one of a preselected set of spontaneous breath types based on results of the comparing operation; and

delivering a breath of the selected one of the spontaneous breath types to the patient.

10. The method of claim 9, wherein patient respiratory parameters are monitored during exhalation.

11. The method of claim 9, wherein patient respiratory parameters are monitored during inhalation and exhalation.

12. The method of claim 9, wherein the Hybrid Mode delivers a mandatory breath if a patient effort is not detected within a set time based on the desired respiratory rate.

13. The method of claim 9, wherein the patient respiratory parameters comprise:

work of breathing, patient effort, carbon dioxide, inspiratory pressure, expiratory pressure, respiratory rate, inspiratory volume, expiratory volume, and body weight.

14. The method of claim 9, wherein the spontaneous breath types comprise:

proportional assist (PA), and volume support (VS) breath types.

15. The method of claim 9, wherein the threshold criteria may be based one or more of the patient respiratory parameters.

16. A graphical user interface for a ventilator to operate in a Hybrid Mode, the ventilator configured with a computer having a user interface including the graphical user interface for accepting commands, the graphical user interface comprising:

at least one window associated with the graphical user interface;

one or more elements within the at least one window, comprising at least one of;

a mode button allowing the selection of one of a plurality of modes; and

a spontaneous breath type selection element through which a plurality of spontaneous breath types may be selected to be delivered when the ventilator is delivering a breath in response to detection of the trigger criteria.

17. The graphical user interface of claim 16 wherein the spontaneous breath types include both proportional assist (PA) and volume support (VS) breath types.

18. The graphical user interface of claim 16, wherein a mode of the plurality of modes is Hybrid Mode.