Non-Invasive Blood Pressure Monitoring System

• US 20100298723A1
• Filed: 11/09/2007
• Published: 11/25/2010
• Est. Priority Date: 11/10/2006
• Status: Active Grant

• Current Assignee: Dragerwerk AG & Company KGaA (FPS Vermögensverwaltung GmbH)
• Original Assignee: Draeger Medical Systems Incorporated (Dragerwerk AG)
• Inventors: Zhen, Ken
• Granted Patent: US 8,900,155 B2
• Time in Patent Office: Days
• US Class Current: 600/490
• CPC Class Codes: A61B 5/02141 Details of apparatus construction, e.g. pump units or housings therefor, cuff pressurising systems, arrangements of fluid conduits or circuits A61B5/02233, A61B5/0235 take precedence
• CPC Class Codes: A61B 5/022 by applying pressure to close blood vessels, e.g. against the skin; Ophthalmodynamometers

Abstract

A non-invasive blood pressure monitoring system, includes an air channel having one or more inlet and exhaust ports to ambient air. An electronically controlled pump inflates and deflates a cuff applied to a patient limb with air via the air channel. A water tight sealed housing containing electronic circuitry for processing signals used in deriving a measurement of patient blood pressure in conjunction with inflating and deflating the cuff. The water tight sealed housing also is sealed from the air channel.

Claims

1. A non-invasive blood pressure monitoring system, comprising:

an isolated air channel having one or more inlet and exhaust ports to ambient air;

an electronically controlled pump for inflating a cuff applied to a patient limb with air via said air channel; and

a water tight sealed housing containing electronic circuitry for processing signals used in deriving a measurement of patient blood pressure in conjunction with inflating and deflating said cuff, said water tight sealed housing also being sealed from said isolated air channel preventing air and liquid from contacting said electronic circuitry.

2. The system according to claim 1, wherein said air channel is capable of being flushed with at least one of (a) air and (b) liquid.

3. The system according to claim 1, wherein said system is capable of achieving an IPX7 international protection rating for said housing.

4. The system according to claim 1, wherein said air channel exclusively acquires and expels air via said air channel substantially without air leakage into said housing.

5. The system according to claim 1, wherein said air channel is a flattened channel having one cross-sectional dimension substantially greater than the other cross-sectional dimension.

6. The system according to claim 1, wherein said water tight sealed housing contains electronic circuitry for controlling said pump.

7. The system according to claim 1, wherein said water tight sealed housing is sealed from said air channel using a gasket.

16. The system according to claim 1, wherein said isolated air channel is selectively removeable.

8. A non-invasive blood pressure monitoring system, comprising:

an electronically controlled pump for inflating and deflating a cuff applied to a patient limb with air via an isolated air channel having one or more inlet and exhaust ports to ambient air;

a water tight sealed housing containing electronic circuitry for processing signals used in deriving a measurement of patient blood pressure in conjunction with inflating and deflating said cuff, said water tight sealed housing also being sealed from said isolated air channel preventing air and liquid from contacting said electronic circuitry.

9. The system according to claim 8, wherein said air channel is capable of being flushed with at least one of (a) air and (b) liquid.

10. The system according to claim 8, wherein said system is capable of achieving an IPX7 international protection rating.

11. The system according to claim 8, wherein said air channel exclusively acquires and expels air via said air channel without air leakage into said housing.

12. The system according to claim 8, wherein said air channel is a flattened channel having one cross-sectional dimension substantially greater than the other cross-sectional dimension.

13. The system according to claim 8, wherein said water tight sealed housing contains electronic circuitry for controlling said pump.

14. The system according to claim 8, wherein said water tight sealed housing is sealed from said air channel using a gasket.

17. The system according to claim 8, wherein said isolated air channel is selectively removeable.

15. A non-invasive blood pressure monitoring system, comprising:

an isolated air channel having one or more inlet and exhaust ports to ambient air;

an electronically controlled pump for inflating and deflating a cuff applied to a patient limb with air via said air channel; and

a water tight sealed housing containing electronic circuitry for processing signals used in deriving a measurement of patient blood pressure in conjunction with inflating and deflating said cuff, said water tight sealed housing also being sealed from said isolated air channel for preventing air and liquid from contacting said electronic circuitry.

18. The system according to claim 15, wherein said isolated air channel is selectively removeable.