Patient monitoring station using a single interrupt resource to support multiple measurement devices

• US 6,112,224 A
• Filed: 09/19/1997
• Issued: 08/29/2000
• Est. Priority Date: 09/20/1996
• Status: Expired due to Term

• Current Assignee: Georgia Tech Research Corporation (University System of Georgia)
• Original Assignee: Georgia Tech Research Corporation (University System of Georgia)
• Inventors: Peifer, John W., Hopper, Andrew, Burrow, Michael, Sudduth, Barry, Panchal, Samir, Quay, Andy, Price, W. Edward
• Primary Examiner(s): Asta, Frank J.
• Assistant Examiner(s): Prieto, Beatriz
• Application Number:
  US08/934,442
• Time in Patent Office: 1,075 Days
• Field of Search: 128/671, 128/903, 128/670, 128/96, 128/700, 128/715, 128/701, 128/782, 364/200, 364/133, 364/8, 364/DIG. 1, 340/825.05, 340/825.06, 340/55, 395/736, 395/733, 395/739, 395/741, 395/742, 395/868, 709/225, 709/201, 709/202, 709/229, 709/238, 709/239, 709/242, 709/218, 709/217, 709/3, 710/47
• US Class Current: 709/202
• CPC Class Codes: G16H 10/60 for patient-specific data, e.g. for electronic patient records
• CPC Class Codes: G16H 40/63 for local operation
• CPC Class Codes: G16H 40/67 for remote operation

Abstract

A patient monitoring system for use in a telemedicine system that allows multiple medical devices to communicate with a control unit via an interface that uses a single interrupt. In architecture, the system can be implemented in hardware, or a combination of hardware and software, and is more particularly implemented as follows: A plurality of medical devices are connected to a control unit via a device interface that uses a single interrupt in the transmission of data from the medical devices to the control unit. When a medical device has data to transmit to the control unit, the medical device transmits data to the device interface, and the device interface uses its single interrupt line in the transmission of data to the control unit.

Claims

1. A patient monitoring system for use in a telemedicine system, comprising:

a plurality of medical devices;

a control unit;

a device interface connecting each of said medical devices to said control unit;

a first data bus connecting said control unit and said device interface;

an address bus connecting said control unit and said device interface;

a single interrupt connection connecting said control unit and said device interface;

a plurality of second data buses, each of which connects said device interface and a respective one of said medical devices;

wherein said device interface is designed to communicate data from said control unit to any one of said medical devices, said device interface being designed to communicate particular data from said control unit to a particular medical device by decoding an address corresponding to said particular medical device on said address bus in order to identify said particular medical device and by communicating said particular data received from said first data bus to a respective one of said second data buses that corresponds to said particular medical device;

wherein said device interface is designed to use a single interrupt in the transfer of data from said medical devices to said control unit, said device interface being designed to communicate data from any one of said medical devices to said control unit, said device interface designed to communicate certain data from a certain medical device to said control unit by receiving said certain data on a respective one of said second buses that is connected to said certain medical device, temporarily storing said certain data, communicating a single interrupt on said single interrupt connection to said control unit, and communicating said certain data received from said respective second data bus to said control unit via said first data bus.

2. The system of claim 1, wherein said medical devices are freely interchangeable with said device interface.

3. The system of claim 1, wherein said medical devices possess plug and play compatibility with said device interface.

4. The system of claim 1, wherein said interface is a single serial communications card having multiple serial ports for handling data transfer from a plurality of said medical devices and having a single interrupt interface with said control unit.

5. The system of claim 1, wherein said medical devices connect to said device interface via an RS232 interface.

6. The system of claim 1, wherein said control unit is a personal computer.

7. A patient monitoring system for use in a telemedicine system, comprising:

means for acquiring information about a patient'"'"'s condition, said acquiring means comprising a plurality of medical devices;

means for controlling the acquisition of said information; and

means for transferring said information from said acquiring means to said controlling means using a single interrupt, said transferring means comprising;

a first data bus means for connecting said controlling means and said acquiring means;

an address bus means for connecting said controlling means and said acquiring means;

a single interrupt connection means for connecting said controlling means and said acquiring means;

a plurality of second data bus means, each of which connects said transferring means and a respective one of said medical devices;

means for communicating data from any one of said medical devices to said controlling means by receiving said data on a respective one of said second bus means that is connected to said any medical device, communicating an interrupt on said single interrupt connection to said controlling means, and communicating said data received from said respective second data bus means to said controlling means via said first data bus means.

8. The system of claim 7, wherein said controlling means comprises a programmable control unit, said control unit being programmed to perform the following functions:

initiate the transmission of data from said acquiring means;

receive an interrupt on said control unit;

process data resulting from an interrupt service routine for said interrupt; and

transmit data to said acquiring means.

9. The system of claim 7, wherein said transferring means is a device interface.

16. The system of claim 7, wherein said transferring means further comprises a means for communicating data from said controlling means to any one of said medical devices, for communicating particular data from said controlling means to a particular medical device by decoding an address corresponding to said particular medical device on said address bus means in order to identify said particular medical device and by communicating said particular data received from said first data bus means to a respective one of said second data bus means that corresponds to said particular medical device.

17. The system of claim 7, wherein said medical devices are freely interchangeable with said device interface.

18. The system of claim 7, wherein said medical devices possess plug and play compatibility with said device interface.

19. The system of claim 7, wherein said acquiring means is a single serial communications card having multiple serial ports for handling data transfer from a plurality of said medical devices and having a single interrupt interface with said controlling means.

20. The system of claim 7, wherein said medical devices connect to said transferring means via an RS232 interface.

10. A method of communication between a plurality of medical devices and a control unit using a single interrupt, comprising the steps of:

transmitting data from one of said medical devices to a device interface;

invoking an interrupt on said control unit with said device interface when any data is to be transferred from any one of said medical devices to said control unit by using a single interrupt request line for each and every one of said medical devices;

starting an interrupt service routine at said control unit for said interrupt; and

transmitting said data through said device interface to said control unit.

11. The method of claim 10 further comprising the step of converting said data from said medical devices into a format comprehensible by said control unit.

12. The method of claim 10, wherein said medical devices use a plurality of communication protocols for transmitting data and further comprising the step of translating between one of said communication protocols used by said medical devices and a communication protocol used by said control unit.

21. The method of claim 10, further comprising the steps of:

communicating data from said control unit to any one of said medical devices;

communicating particular data from said control unit to a particular medical device by decoding an address corresponding to said particular medical device at said device interface in order to identify said particular medical device and by communicating said particular data to said particular medical device through said device interface.

22. The method of claim 10, wherein said medical devices are freely interchangeable with said device interface.

23. The method of claim 10, wherein said medical devices possess plug and play compatibility with said device interface.

24. The method of claim 10, wherein said acquiring means is a single serial communications card having multiple serial ports for handling data transfer from a plurality of said medical devices and having a single interrupt interface with said controlling means.

25. The method of claim 10, wherein said medical devices connect to said transferring means via an RS232 interface.

13. A programmable patient monitoring system for use in a telemedicine system, comprising:

a plurality of medical devices;

a programmable control unit;

a device interface connecting each of said medical devices to said control unit, said device interface using a single interrupt in the transfer of data from said medical devices to said control unit;

said control unit being programmed to perform the following functions;

initiate the transmission of data from one of said medical devices to said device interface;

receive an interrupt on said control unit;

process data resulting from an interrupt service routine for said interrupt; and

transmit data to said medical devices through said device interface.

14. The system of claim 13, wherein said interface is a single serial communications card having multiple serial ports for handling data transfer from a plurality of said medical devices and having a single interrupt interface with said control unit.

15. The system of claim 13, wherein said medical devices connect to said device interface via an RS232 interface.