Auto-inflation cuffs

• US 7,686,019 B2
• Filed: 11/23/2005
• Issued: 03/30/2010
• Est. Priority Date: 11/23/2005
• Status: Expired due to Fees

• Current Assignee: Covidien LP (Medtronic Plc), University of Zurich
• Original Assignee: University of Zurich
• Inventors: Weiss, Markus, Denman, William T.
• Primary Examiner(s): Douglas; Steven O
• Application Number:
  US11/287,163
• Publication Number:
  US 20070113857A1
• Time in Patent Office: 1,588 Days
• Field of Search: 128/201.13, 128/205.24, 128/207.15, 128/207.14, 128/207.18, 128/206.26, 128/200.24, 128/204.18
• US Class Current: 128/207.15
• CPC Class Codes: A61M 16/0434 Cuffs
• CPC Class Codes: A61M 16/044 External cuff pressure control or supply, e.g. synchronisation with respiration
• CPC Class Codes: A61M 16/0443 Special cuff-wall materials A61M16/0481, A61M16/0422 take precedence
• CPC Class Codes: A61M 16/0452 following the inspiration and expiration pressure
• CPC Class Codes: A61M 16/0841 for sampling
• CPC Class Codes: A61M 16/0858 Pressure sampling ports
• CPC Class Codes: A61M 2016/0413 with detectors of CO2 in exhaled gases

Abstract

A medical ventilation device comprising a cannula having proximal and distal ends; an inflatable cuff adapted to be inflated to an inspiratory pressure, the cuff attached to and surrounding a portion of the cannula toward the distal end thereof; an inspiratory pressure inflation tube having first and second ends, the first end in communication with an interior of the inflatable cuff, the second end adapted to communicate with an inspiratory pressure source; and a pressure valve in communication with the inspiratory pressure inflation tube.

Claims

1. A medical ventilation device comprising:

a cannula having proximal and distal ends, wherein the cannula is in fluid communication with an inspiratory pressure source adapted to provide respiratory gases to a patient at an inspiratory pressure;

an inflatable cuff adapted to be inflated to the inspiratory pressure, the cuff attached to and surrounding a portion of the cannula toward the distal end thereof;

an inspiratory pressure inflation tube having first and second ends, the first end in communication with an interior of the inflatable cuff, the second end adapted to communicate with the inspiratory pressure source and a cuff pressure monitoring device; and

a pressure valve in communication with the inspiratory pressure inflation tube.

2. The medical ventilation device according to claim 1, wherein the inspiratory pressure source comprises a ventilator.

3. The medical ventilation device according to claim 1, wherein the inflation tube is integrally formed with the cannula.

4. The medical ventilation device according to claim 1, further comprising a pilot balloon proximate to the inflation tube.

5. The medical ventilation device according to claim 1, wherein the inflation tube is configured to at least partially trap air in the inflatable cuff.

6. The medical ventilation device according to claim 1, wherein the pressure valve is adjustable.

7. The medical ventilation device according to claim 1, wherein the pressure valve comprises a pressure release valve capable of affecting the pathway of air in the inspiratory pressure inflation tube.

8. The medical ventilation device according to claim 1, wherein the pressure valve comprises a positive pressure inflation valve.

9. The medical ventilation device according to claim 1, wherein the pressure valve is capable of adjustment in a range from about a value corresponding to the positive-end expiratory pressure to about a value corresponding to the peak inspirational pressure.

10. The medical ventilation device according to claim 1, wherein the pressure valve comprises an adjustable regulator.

11. The medical ventilation device according to claim 1, wherein the pressure valve comprises an adjustable regulator that is capable of separately adjusting the pressure inside the cuff during expiration and inspiration.

12. The medical ventilation device according to claim 1, wherein the pressure valve comprises an adjustable regulator that is capable of separately adjusting a pressure inside the cuff during expiration and inspiration, and wherein the pressure is capable of adjustment in a range from about a value corresponding to the positive-end expiratory pressure to about a value corresponding to the peak inspiratory pressure.

13. The medical ventilation device according to claim 1, further comprising a port, wherein the port is selectively openable to provide access to the inflation tube.

14. The medical ventilation device according to claim 1, further comprising a first port, wherein the port is selectively openable to provide access to the inflation tube, and a second port, wherein the second port is selectively openable to provide access to the cannula.

15. The medical ventilation device according to claim 1, further comprising a heat and moisture exchange filter.

16. A medical ventilation system comprising:

a tracheal tube comprising a cannula having proximal and distal ends, wherein the tracheal tube is in fluid communication with an inspiratory pressure source adapted to provide respiratory gases to a patient at an inspiratory pressure;

an inflatable cuff adapted to be inflated to the inspiratory pressure, the cuff attached to and surrounding a portion of the cannula toward the distal end thereof;

an inspiratory pressure inflation tube having first and second ends, the first end in communication with an interior of the inflatable cuff, the second end adapted to communicate with the inspiratory pressure source and a cuff pressure monitoring device;

a pressure valve in communication with the inspiratory pressure inflation tube; and

a ventilator, wherein the second end of the inflation tube is in communication with the ventilator and the ventilator is adapted to inflate the cuff to the inspiratory pressure.

17. The medical ventilation system according to claim 16, further comprising a monitoring device operably attached to the tracheal tube.

18. The medical ventilation system according to claim 16, further comprising an electronic cuff pressure regulator operably attached to the tracheal tube.

19. The medical ventilation system according to claim 16, further comprising an anesthesia gas monitoring unit operably attached to the tracheal tube.

20. The medical ventilation system according to claim 16, further comprising a heat and moisture exchange filter between the ventilator and inflation tube.