Drivers Pulmonary Data Service Instrumentation

We claim:

DAQami 4.2.1 – Data acquisition companion software for acquiring data and generating signals. InstaCal 6.72 – Installation and test utility with device drivers. TracerDAQ® 2.3.4 – Virtual instrument application suite with strip chart, oscilloscope, function generator, and rate generator. Support and Services Premium Customer Care. At Zurich Instruments we understand that excellent premium user support and customer care are as important as offering instruments with outstanding specifications and software. In fact, customer care is at the very core of our commitment as a test and measurement company. You will be supported by a. Pulmonary Data Systems, Inc. 11 followers on LinkedIn. Pulmonary Data Systems’ founding principle is that, in the treatment of lung disease, effective data begets effective treatment.

Mdn is a Trademark by Pulmonary Data Service Instrumentation,inc., the address on file for this trademark is 908 Main Street, Louisville, CO 80027.
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1. A pump, comprising:

a pump housing comprising first and second chambers substantially isolated from each other;

a first port associated with said first chamber;

a first valve associated with said first port, wherein said first valve comprises a first flow orifice which is dynamically adjustable to vary a size of said first flow orifice;

Drivers Pulmonary Data Service Instrumentation Tool

a second port associated with said second chamber;

an adapter disposed on an exterior surface of said pump and extending beyond adjacent portions of said pump housing, said second port extending through said adapter; and

means for simultaneously drawing a first fluid into said first chamber through said first port and valve and discharging a second fluid from said second chamber through said second port and said adapter, wherein a magnitude of force used by said means for simultaneously drawing and discharging affects said size of said first flow orifice, said size of said first flow orifice decreasing as said amount of said force increases, and wherein via said means for simultaneously drawing and discharging, said first fluid is drawn into said first chamber at the same time that said second fluid is discharged from said second chamber.

2. A pump, as claimed in claim 1, wherein:

said first and second fluids each consist essentially of air.

3. A pump, as claimed in claim 1, further comprising:

a piston movably received in said pump housing, wherein said first chamber is on a first side of said piston and said second chamber is on a second side of said piston.

4. A pump as claimed in claim 3, wherein:

said piston is vertically reciprocable within said pump housing, said pump further comprising a plunger interconnected with said piston.

5. A pump, as claimed in claim 1, wherein:

said first valve further comprises a second flow orifice displaced from said first flow orifice so that said means for simultaneously drawing and discharging first draws said first fluid through said first flow orifice and then through said second flow orifice into said first chamber, said second flow orifice being of a substantially fixed size.

6. A pump, as claimed in claim 5, wherein:

said size of said second flow orifice is larger than any said size of said first flow orifice.

7. A pump, as claimed in claim 1, wherein:

said first valve has a central, longitudinal axis, wherein at least part of an outer surface of said first valve tapers inwardly toward said central, longitudinal axis progressing away said first chamber.

8. A pump, as claimed in claim 1, wherein:

said first flow orifice is disposed on an end of said first valve, wherein an effective diameter of an outer surface of said first valve progressively increases progressing away from said first flow orifice for at least a portion of a length of said first valve.

9. A pump, as claimed in claim 1, wherein:

said first valve has a slot-like configuration from an end view of said first valve which is perpendicular to a direction of flow through said first valve, wherein a first end of said slot has a greater width than a second end of said slot opposite said first end.

10. A pump, as claimed in claim 1, wherein:

a width of said first flow orifice, taken perpendicularly to a direction of flow through said first flow orifice, varies based upon a distance from a central, longitudinal axis of said first valve.

11. A pump, as claimed in claim 1, wherein:

an end of said first valve comprises said first flow orifice, said first flow orifice having a generally rectangular profile when a pressure on an interior of said first valve is equal to a pressure on an exterior of said first valve.

12. A pump, as claimed 1, wherein:

when a pressure on an interior of said first valve is equal to a pressure on an exterior of said first valve, said size of said first flow orifice is greater than zero.

13. A pump, comprising:

a pump housing comprising first and second chambers substantially isolated from each other;

a first port associated with said first chamber;

a second port associated with said second chamber;

an adapter disposed on an exterior surface of said pump and extending beyond adjacent portions of said pump housing, said second port extending through said adapter;

a valve associated with said second port, wherein said valve comprises a first flow orifice which is dynamically adjustable to vary a size of said first flow orifice; and

means for simultaneously drawing a first fluid into said first chamber through said first port and discharging a second fluid from said second chamber through said second port and said valve, wherein a magnitude of force used by said means for simultaneously drawing and discharging affects said size of said first flow orifice, said size of said first flow orifice decreasing as said amount of said force increases, and wherein via said means for simultaneously drawing and discharging, said first fluid is drawn into said first chamber at the same time that said second fluid is discharged from said second chamber.

14. A pump, as claimed in claim 13, wherein:

said first and second fluids each consist essentially of air.

15. A pump, as claimed in claim 13, further comprising:

a piston movably received in said pump housing, wherein said first chamber is on a first side of said piston and said second chamber is on a second side of said piston.

16. A pump as claimed in claim 15, wherein:

said piston is vertically reciprocable within said pump housing, said pump further comprising a plunger interconnected with said piston.

17. A pump, as claimed in claim 13, wherein:

said valve further comprises a second flow orifice displaced from said first flow orifice so that said means for simultaneously drawing and discharging first discharges said second fluid through said first flow orifice and then through said second flow orifice, said second flow orifice being of a substantially fixed size.

18. A pump, as claimed in claim 17, wherein:

said size of said second flow orifice is larger than any said size of said first flow orifice.

19. A pump, as claimed in claim 13, wherein:

said valve has a central, longitudinal axis, wherein at least part of an outer surface of said valve tapers outwardly from said central, longitudinal axis progressing away from said second chamber, and wherein said at least part of said outer surface of said valve is exposed to a pressure within said second chamber.

20. A pump, as claimed in claim 13, wherein:

said first flow orifice is disposed on an end of said valve, wherein an effective diameter of an outer surface of said valve progressively increases progressing away from said first flow orifice for at least a portion of a length of said valve.

21. A pump, as claimed in claim 13, wherein:

said first flow orifice is slot-like from an end view of said valve which is perpendicular to a direction of flow through said valve, wherein a first end of said slot has a greater width than a second end of said slot opposite said first end.

22. A pump, as claimed in claim 13, wherein:

a width of said first flow orifice, taken perpendicularly to a direction of flow through said first flow orifice, varies based upon a distance from a central, longitudinal axis of said valve.

23. A pump, as claimed in claim 13, wherein:

an end of said valve comprises said first flow orifice, said first flow orifice having a generally rectangular profile when a pressure on an interior of said valve is equal to a pressure on an exterior of said valve.

24. A pump, as claimed 13, wherein:

when a pressure on an interior of said valve is equal to a pressure on an exterior of said valve, said size of said first flow orifice is greater than zero.

25. A pump, comprising:

a pump housing comprising first and second chambers substantially isolated from each other;

a first port associated with said first chamber;

a first valve associated with said first port;

a second port associated with said first chamber;

a second valve associated with said second port;

a third port associated with said second chamber;

means for selectively blocking one of said first and second ports;

means for simultaneously drawing a first fluid into said first chamber through the open of said first and second ports and discharging a second fluid from said second chamber through said third port; and

means for providing a fixed flow rate through said third port independent of an amount of force used by said means for simultaneously drawing and discharging and comprising said first and second valves, wherein said fixed flow rate has a first magnitude when only said first port is open and has a second magnitude, different from said first magnitude, when only said second port is open.

26. A pump, comprising:

a pump housing comprising first and second chambers substantially isolated from each other;

a first port associated with said first chamber;

a second port associated with said second chamber;

means for simultaneously drawing a first fluid into said first chamber through said first port and discharging a second fluid from said second chamber through said second port, said means for drawing and discharging comprising means for providing a substantially constant flow rate out of said second chamber regardless of a magnitude of a force used by said means for drawing and discharging, wherein via said means for simultaneously drawing and discharging, said first fluid is drawn into said first chamber at the same time that said second fluid is discharged from said second chamber.

27. A device for providing a substantially constant flow rate comprising:

a housing comprising first and second chambers substantially isolated from each other;

a first port associated with said first chamber;

a first valve associated with said first port, wherein said first valve comprises a first flow orifice which is dynamically adjustable to vary a size of said first flow orifice;

a second port associated with said second chamber; and

means for simultaneously drawing a first fluid into said first chamber through said first valve and discharging a second fluid from said second chamber through said second port, wherein a magnitude of force used by said means for simultaneously drawing and discharging affects said size of said first flow orifice,

said means for simultaneously drawing and discharging comprising means for providing a substantially constant flow rate out of said second chamber regardless of said magnitude of said force used by said means for simultaneously drawing and discharging.

28. A device, as claimed in claim 27, wherein said means for simultaneously drawing and discharging comprises:

a piston movably received in said housing, wherein said first chamber is on a first side of said piston and said second chamber is on a second side of said piston; and

a plunger interconnected with said piston for moving said piston in said housing;

wherein said size of said first flow orifice of said first valve varies in relation to an amount of a force being exerted on said piston, said size of said first flow orifice decreasing as said amount of said force being exerted on said piston increases, whereby said substantially constant flow rate out of said second chamber is provided.

29. A device, as claimed in claim 27, wherein:

30. A device, as claimed in claim 29, wherein:

said size of said second flow orifice is larger than any said size of said first flow orifice.

31. A device, as claimed in claim 27, wherein:

32. A device, as claimed in claim 27, wherein:

33. A device, as claimed in claim 27, wherein:

34. A device, as claimed in claim 27, wherein:

a width of said first flow orifice, taken perpendicularly to a direction of flow through said first flow orifice, varies based upon a distance from said central, longitudinal axis of said first valve.

35. A device, as claimed in claim 27, wherein:

36. A device, as claimed 27, wherein:

when a pressure on an interior of said first valve is equal to a pressure on an exterior of said first valve, said size of said first flow orifice is greater than zero.

37. A device for providing a substantially constant flow rate comprising:

a housing comprising first and second chambers substantially isolated from each other;

a first port associated with said first chamber;

a second port associated with said second chamber;

a valve associated with said second port, wherein said valve comprises a first flow orifice which is dynamically adjustable to vary a size of said first flow orifice; and

38. A calibration syringe, comprising:

a cylindrical housing comprising first and second chambers substantially isolated from each other;

a first port associated with said first chamber;

a first valve associated with said first port;

a second port associated with said first chamber;

a second valve associated with said second port;

a third port associated with said first chamber;

a third valve associated with said third port;

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a fourth port associated with said second chamber;

means for selectively blocking all but one of said first, second and third ports;

means for simultaneously drawing a first fluid into said first chamber through the open one of said first, second and third ports and discharging a second fluid from said second chamber through said fourth port; and

means for providing a fixed flow rate through said fourth port independent of an amount of force used by said means for simultaneously drawing and discharging and comprising said first, second and third valves, wherein said fixed flow rate has a first magnitude when only said first port is open, has a second magnitude when only said second port is open, and has a third magnitude when only said third port is open, said first, second and third magnitudes each being different from the others.

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Drivers Pulmonary Data Service Instrumentation Software

39. A syringe, as claimed in claim 38, wherein said means for simultaneously drawing and discharging comprises:

Drivers Pulmonary Data Service Instrumentation Tool

a piston movably received in said housing, wherein said first chamber is on a first side of said piston and said second chamber is on a second side of said piston; and

a plunger interconnected with said piston for moving said piston in said housing.

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