Suction control apparatus and methods for maintaining fluid flow without compromising sterile lines

• US 20050124966A1
• Filed: 12/08/2004
• Published: 06/09/2005
• Est. Priority Date: 12/08/2003
• Status: Active Grant

• Current Assignee: Boehringer Laboratories, Inc.
• Original Assignee: Boehringer Laboratories, Inc.
• Inventors: Karpowicz, John, Klocek, Kevin P.
• Granted Patent: US 7,887,510 B2
• Time in Patent Office: Days
• US Class Current: 604/500
• CPC Class Codes: A61M 1/732 Visual indicating means for vacuum pressure
• CPC Class Codes: A61M 1/74 Suction control underwater drainage A61M1/61

Abstract

The present invention relates to a device and method to control suction in a patient environment. The device comprises a body portion having an interior chamber adapted for coupling to a source of the vacuum; a valve comprising a shaft rotatably coupled to the body portion; and an actuator coupled to the shaft of the valve. In operation the valve is rotatable between i) a first position in which the vacuum is provided to the interior chamber via the valve at a first predetermined level and ii) a second position in which the vacuum is interrupted to the interior chamber. The actuator is adapted to move between a first position and a second position which increases the vacuum in the interior chamber to a second predetermined level for clearing occluded suction lines in the patient circuit.

Claims

1. A device for providing vacuum to a patient circuit, the device comprising:

a body portion having an interior chamber and adapted for coupling to a source of the vacuum;

a valve comprising a shaft moveably coupled to said body portion; and

an actuator coupled to said shaft of said valve,

wherein said valve is selectable between i) a first position in which the vacuum is provided to said interior chamber via said valve at a first predetermined level and ii) a second position in which the vacuum is interrupted to said interior chamber, and said actuator is adapted to move between a first position and a second position to increase the vacuum in said interior chamber to a second predetermined level.

2. The device of claim 1 wherein said actuator comprises a pushbutton.

3. The device of claim 1 further comprising an orifice disposed in said body portion to provide fluid communication of external atmosphere with said interior chamber when said valve is in said second position.

4. The device of claim 1 wherein said valve has a first axis of rotation and said actuator moves longitudinally along the first axis of rotation

5. The device of claim 1 further comprising:

a further valve rotatably coupled to said body portion; and

an output port coupled to the interior chamber for receiving said first and second predetermined levels of vacuum.

6. The device of claim 5 further comprising an indicator coupled to the body portion to display a level of vacuum provided to the output port.

7. The device of claim 6, wherein said indicator indicates a condition of the patient vacuum circuit.

8. The device of claim 5 wherein said output port is coupled to a central portion of the body portion adjacent said valve.

9. The device of claim 5 wherein said further valve determines at least said first level of vacuum.

10. The device of claim 5 wherein said further valve is a regulator.

11. The device of claim 1 wherein the axis of rotation of said valve is substantially perpendicular to a longitudinal axis of the interior chamber

12. The device of claim 1 wherein said valve comprises:

a first vacuum circuit comprising a groove disposed partially around an outside portion of said shaft, wherein said groove provides fluid communication between said interior chamber and said source of vacuum when said valve is in said first position; and

a second vacuum circuit comprising;

a first orifice disposed along at least a portion of said shaft along said longitudinal axis,

a second orifice disposed in said shaft, oriented transverse to said longitudinal axis and in fluid communication with said first orifice, and

a third orifice disposed in said shaft, oriented transverse to said longitudinal axis and in fluid communication with said first orifice,

wherein said second vacuum circuit provides fluid communication between said interior chamber and said source of vacuum when said actuator is in said second.

13. The device of claim 1 further comprising resilient means for normally maintaining said actuator in said first position.

14. The device of claim 13 wherein said resilient means is a spring disposed between a portion of said valve and a portion of said actuator.

15. The device of claim 1 further comprising means for providing atmospheric pressure into said interior chamber when said valve is in said second position.

16. The device of claim 15 wherein said means for providing atmospheric pressure is a further orifice extending through said shaft of said valve transverse to said longitudinal axis for providing fluid communication from an exterior of said device to said interior chamber.

17. The device of claim 15 wherein said means for providing atmospheric pressure comprises:

an orifice extending from an end of said shaft of said valve along a longitudinal axis thereof;

a seat formed at a portion of said orifice;

a sealing member disposed within said orifice and adapted to engage with said seat; and

a resilient element having a first end disposed against said sealing member distal to said seat,

wherein said orifice provides fluid communication from an exterior of said device to said interior chamber.

18. The device of claim 1 wherein,

said valve further comprises:

a knob disposed at an end portion of said shaft and adapted to rotate said valve between said first and second positions;

said actuator further comprises;

a shaft coaxially coupled to said shaft of said valve,

a first orifice extending from an end of said shaft and at least partially along an interior of said shaft,

a circumferential groove disposed along an outside potion of said shaft,

a second orifice formed in said circumferential groove, transverse to said first orifice and in fluid communication with said first orifice,

wherein said actuator provides fluid communication between said interior chamber and said source of vacuum via i) said first orifice, ii) said circumferential groove and iii) said second orifice when said actuator is in said second position.

19. The device of claim 1 wherein said valve further comprises a knob disposed at an end portion of said shaft and adapted to rotate said valve between said first and second positions.

20. The device of claim 1 wherein said second predetermined level of vacuum substantially clears said patient circuit of obstructions.

21. A method of providing vacuum from a vacuum source to a patient circuit comprising the steps of:

applying a first level of vacuum to the patient circuit via a first vacuum circuit coupled to the vacuum source;

determining an occluded condition of the patient circuit; and

applying a second level of vacuum greater than said first level of vacuum to the patient circuit via a second vacuum circuit coupled to the vacuum source based whether said patient circuit is occluded.

22. The method according to claim 21 wherein said application of said second level of vacuum is for a predetermined period of time.

23. A device for providing vacuum from a vacuum source to a patient circuit comprising:

means for applying a first controlled level of vacuum to the patient circuit via a first vacuum control coupled to the vacuum source; and

means for applying a second controlled level of vacuum greater than said first controlled level of vacuum to the patient circuit based whether said patient circuit is occluded.

24. The device of claim 23 further comprising means for determining an occluded condition of the patient circuit.