Method and system for remotely monitoring multiple medical parameters

• US 6,319,200 B1
• Filed: 01/05/1999
• Issued: 11/20/2001
• Est. Priority Date: 11/13/1996
• Status: Expired due to Term

• Current Assignee: Criticare Systems, Inc. (Opto Circuits (India) Ltd.)
• Original Assignee: Criticare Systems, Inc. (Opto Circuits (India) Ltd.)
• Inventors: Lai, Joseph, Reuss, James L., Pate, Brian Lewis, Buyan, Lawrence A., DuBore, Renee S.
• Primary Examiner(s): Nasser, Robert L.
• Application Number:
  US09/226,055
• Time in Patent Office: 1,050 Days
• Field of Search: 600/300, 128/903-904
• US Class Current: 600/300
• CPC Class Codes: A61B 5/002 Monitoring the patient using a local or closed circuit, e.g. in a room or building A61B5/0017 takes precedence
• CPC Class Codes: A61B 5/0205 Simultaneously evaluating both cardiovascular conditions and different types of body conditions, e.g. heart and respiratory condition
• CPC Class Codes: Y10S 128/903 Radio telemetry
• CPC Class Codes: Y10S 128/904 Telephone telemetry

Abstract

The invention relates to a medical parameter monitoring device which allows the monitoring of a plurality of medical parameters from a remote location. The invention uses a central monitoring system which transmits and receives data parameters via RF from remote patient monitors. The monitoring systems utilizes a digital spread spectrum RF transceiver between the central monitoring system and the remote monitors. Forward error correcting, frequency hopping, and spread spectrum communications are employed to provide accurate trnsmission of data for a plurality of physiological parameters. Transmitted data can be automatically registered into storage int he central monitoring system.

Claims

1. A method of monitoring a plurality of physiological parameters representing the condition of a patient, said method comprising the steps of:

coupling a patient monitor having a transceiver to said patient to continuously monitor at least one of said physiological parameters;

transmitting a select data signal from a central monitoring system to the patient monitor to select at least one of said physiological parameters to monitor at the patient monitor;

transmitting a parameter data signal corresponding to a continuous, uninterrupted representation of said selected physiological parameters from said patient monitor to said central monitoring system; and

displaying said continuous, uninterrupted representation of said at least one selected physiological parameter on a display of said central monitoring system.

2. The method as defined in claim 1, wherein said selected physiological parameter includes at least one of blood pressure, heart rate, SpO₂, respiration and ECG.

3. The method as defined in claim 1, wherein transmitting said parameter data signal includes simultaneously transmitting a representation of a plurality of physiological parameters.

4. The method as defined in claim 3, wherein a plurality of physiological parameters consists of ECG, NIBP, SpO₂, respiration, temperature, and four invasive lines.

5. The method as defined in claim 1, further comprising the step of storing at least one time bracketed event.

6. The method as defined in claim 5, further comprising the steps of storing a plurality of said time bracketed events, categorizing the plurality of time bracketed events, and compiling a running total of events for review.

7. The method as defined in claim 1, further comprising the step of trending a plurality of physiological parameters over time.

8. The method as defined in claim 1, further comprising the step of selecting a date sampling rate for the patient monitor at the central monitoring system.

9. The method as defined in claim 1, wherein transmissions to and from the central monitoring system comprise spread-spectrum digital transmissions in the ISM band.

10. The method as defined in claim 1, further comprising the step of identifying the location of the patient at the central monitoring system.

11. The method as defined in claim 1, further comprising the step of dynamically selecting at least one waveform parameter to monitor at the patient monitor and to be transmitted to and displayed on the display of said central monitoring system.

12. A system for monitoring physiological data representing the condition of a patient, said system comprising:

sensors for monitoring blood pressure, pulse rate, blood oxygen concentration and electrocardiographic information to provide the physiological data;

a patient monitor coupled to the sensors for continuous, uninterrupted collection of the physiological data;

a central monitoring system for storage, analysis, and display of continuous, uninterrupted physiological data collected by said patient monitor, the central monitoring system including a transmitter for transmitting a select data signal to select at least one physiological parameter to be monitored at said patient monitor;

the patient monitor including a radio-frequency transmitter for transmitting said physiological data from said monitor to said central monitoring system.

13. The system of claim 12 wherein said patient monitor is interfaced with at least one additional central monitoring system for continuous, uninterrupted bi-directional communication.

14. The system of claim 13 wherein said patient monitor has a storage component for storing physiological data, said component operative upon cessation of transmittance from said central monitoring system and before transmittance to said additional central monitoring system.

15. A system for monitoring physiological data representing the condition of a patient, said system comprising;

sensors for monitoring blood pressure, pulse rate, blood oxygen concentration and electrocardiographic information to provide the physiological data;

a patient monitor coupled to the sensors for continuous, uninterrupted collection of the physiological data;

a central monitoring system for storage, analysis, and display of continuous, uninterrupted physiological data collected by said patient monitor, the central monitoring system including a transmitter for transmitting a select data signal to select a plurality of physiological parameters to be monitored at said patient monitor;

the patient monitor including a radio-frequency transmitter for transmitting physiological data representing the selected plurality of physiological parameters from said monitor to said central monitoring system.