Patient monitoring system and method

• US 6,117,076 A
• Filed: 09/21/1998
• Issued: 09/12/2000
• Est. Priority Date: 09/21/1998
• Status: Expired due to Term

• Current Assignee: Arrow International Incorporated (Teleflex Incorporated)
• Original Assignee: Belmont Instrument Corporation
• Inventors: Cassidy, David
• Primary Examiner(s): LAYNO, CARL HERNANDZ
• Application Number:
  US09/157,762
• Time in Patent Office: 722 Days
• Field of Search: 600/508, 600/509, 600/300, 600/342, 600/478, 128/904
• US Class Current: 600/300
• CPC Class Codes: A61B 5/0006 ECG or EEG signals
• CPC Class Codes: A61B 5/0008 Temperature signals

Abstract

A system for monitoring an anatomical condition of a patient is provided. One embodiment of the system includes an electronic monitoring device for monitoring the anatomical condition (e.g., cardiac function) of the patient and for generating an electrical signal indicative of that monitored condition. The system converts the electrical signal into an optical signal that is indicative of the monitored condition, and supplies the optical signal via a fiber optic link to a remote location for processing. The system also supplies to the electronic monitoring device another optical signal via another fiber optic link. The other optical signal is for use both in controlling operation of and powering the electronic monitoring device.

Claims

1. A patient monitoring system, comprising:

a first optical fiber link for transmitting first optical signals to a location remote from location of an electronic monitoring device, said first optical signals being indicative of a patient anatomical condition being monitored by said monitoring device; and

a second optical fiber link for transmitting to said location of said monitoring device second optical signals originating at said remote location for use in controlling operation of said monitoring device, said second signals also being for use in supplying activation power to said monitoring device.

2. A patient monitoring system according to claim 1, wherein said condition comprises patient cardiac function.

3. A patient monitoring system according to claim 1, wherein said monitoring device generates analog electrical signals indicative of patient heart activity, and also comprises a digital encoding system for digitizing and encoding said analog electrical signals.

4. A patient monitoring system according to claim 3, wherein said digital encoding system comprises an analog-to-digital converter (ADC) for digitizing said analog signals, and a controller for encoding digital signals produced by said ADC from said analog signals.

5. A patient monitoring system according to claim 4, wherein second signals are for use in controlling said ADC.

6. A patient monitoring system according to claim 1, further comprising at said remote location, a processor configured to determine whether a failure condition is present in said patient monitoring system, and to cause a resetting of said monitoring device if said failure condition is determined by said processor to be present.

7. A patient monitoring system according to claim 3, wherein said monitoring device comprises an amplifier for amplifying said analog signals, and said second signals are also for use in powering said amplifier.

8. A patient monitoring system according to claim 1, wherein said monitoring device comprises a controller for controlling operation of said monitoring device, and said second signals are also for use in powering and controlling said controller.

9. A method for monitoring a patient anatomical condition, comprising:

using an electronic monitoring device to generate an electric signal indicative of said condition;

converting said electric signal into an optical signal;

transmitting said optical signal via an optical fiber link to a location remote from said monitoring device; and

supplying to said monitoring device another electric signal for both powering and controlling said monitoring device, said another electric signal being generated from another optical signal transmitted via another optical fiber link from said remote location.

10. A method according to claim 9, wherein a laser light signal is used as said another optical signal.

11. A method according to claim 9, wherein said monitoring device comprises a controller for controlling operation of the monitoring device and a power supply for providing power to the monitoring device, and said method further comprises providing portions of said another electric signal to said controller and said power supply.

12. A method according to claim 9, wherein said another optical signal is generated based upon a second electric signal generated by a processor at said remote location.

13. A method according to claim 12, further comprising, recovering the electrical signal that is indicative of the condition from the optical signal transmitted to the remote location, and providing the recovered electrical signal to the processor.