Medical device synchronization system for use in cardiac and other patient monitoring

• US 8,175,076 B2
• Filed: 09/10/2008
• Issued: 05/08/2012
• Est. Priority Date: 11/20/2007
• Status: Active Grant

• Current Assignee: Siemens Healthineers AG (Siemens AG)
• Original Assignee: Siemens Medical Solutions USA Incorporated (Siemens AG)
• Inventors: Pelzek, Bryon, Zhang, Hongxuan
• Primary Examiner(s): Phung, Luat
• Application Number:
  US12/207,989
• Publication Number:
  US 20090131762A1
• Time in Patent Office: 1,336 Days
• Field of Search: 370/350, 370/503, 370/509
• US Class Current: 370/350
• CPC Class Codes: A61B 5/318 Heart-related electrical modalities, e.g. electrocardiography [ECG]
• CPC Class Codes: G04C 13/02 Circuit arrangements; Electric clock installations
• CPC Class Codes: G04G 7/00 Synchronisation radio-controlled time-pieces G04R

Abstract

A system provides synchronization between different medical signal (e.g., EKG and ICEG signal) acquisition and processing devices. A system synchronizes multiple different patient medical parameter processing devices, using a master clock generator. The master clock generator is adaptively programmable to provide synchronization clocks having frequencies compatible with multiple different medical devices for acquiring patient medical parameter data and for synchronization of processing of medical parameter data concurrently acquired from a single particular patient. The master clock generator is programmed by dividing a clock signal to provide a desired clock frequency in response to received frequency selection command data. An output interface provides synchronization clocks to the multiple different medical devices for acquiring patient medical parameter data and providing synchronized output patient medical parameter data from the different medical devices for presentation to a user in synchronized format on a display. An input interface receives the command data for determining clock division and generating the desired clock frequency.

Claims

1. A system for synchronizing a plurality of different patient medical parameter processing devices, comprising:

a master clock generator adaptively programmable to provide synchronization clocks having frequencies compatible with a plurality of different medical devices for synchronization of processing of medical parameter data concurrently acquired from a single particular patient, said master clock generator being programmed by dividing a clock signal to provide a desired clock frequency in response to received frequency selection command data, said plurality of different medical devices being for acquiring patient medical parameter data;

an adaptive delay generator for adaptively generating a time delay used in delaying synchronized output patient medical parameter data from one of said different medical devices for presentation to a user synchronized with output patient medical parameter data from another of said different medical devices for presentation on a display in response to received time delay selection command data;

an output interface for providing said synchronization clocks to said plurality of different medical devices; and

an input interface for receiving said frequency selection command data for determining clock division.

2. A system according to claim 1, including

a plurality of different medical devices for acquiring patient medical parameter data, said plurality of different medical devices individually having a synchronization interface for receiving and using a synchronization clock provided by said master clock generator for synchronizing processing of patient medical parameter data acquired concurrently from said single particular patient enabling said plurality of different medical devices to provide synchronized output patient medical parameter data for presentation to a user in synchronized format on a display.

3. A system according to claim 2, wherein

said synchronization interface comprises a phase lock loop.

4. A system according to claim 1, wherein

said adaptive delay generator adaptively generates said time delay to reduce latency occurring due to signal delay within individual different medical devices using individually programmable delays for data provided by individual devices.

5. A system according to claim 1, wherein

said adaptive delay generator adaptively generates first and second different time delays used in delaying synchronized output patient medical parameter data from first and second different medical devices for presentation to a user in synchronized format on said display in response to received time delay selection command data.

6. A system according to claim 1, wherein

said time delay has a value independently adjustable of said desired clock frequency.

7. A system according to claim 1, including

a user interface for generating data representing at least one display image enabling a user to enter data comprising said time delay selection command data.

8. A system according to claim 1, including

an auto-discovery communication interface for automatically communicating with said different medical devices to determine a time delay and provide said time delay selection command data.

9. A system according to claim 1, including

a user interface for generating data representing at least one display image enabling a user to enter data comprising said frequency selection command data.

10. A system according to claim 1, including

an auto-discovery communication interface for automatically communicating with said different medical devices to determine a frequency and provide said frequency selection command data.

11. A system according to claim 1, wherein

said patient medical parameter data comprises at least two of, (a) ECG data, (b) a blood oxygen representative parameter, (c) a change in a blood oxygen representative parameter, (d) a rate of change of a blood oxygen representative parameter, (e) a patient temperature, (f) a arterial blood pressure, (g) a hematocrit level, (h) a cardiac index (i) a pulse rate and (j) a change in pulse rate.

12. A system according to claim 1, wherein

said master clock generator adaptively adjusts pulse width in response to received frequency selection command data.

13. A system according to claim 1, wherein

said master clock generator is included in one of said different medical devices.

14. A system used by a patient medical parameter processing device in synchronizing patient medical parameter processing of a plurality of medical parameter processing devices, comprising:

an input interface for receiving a synchronization clock provided by a master clock generator and a time delay generated by an adaptive delay generator;

a synchronization interface for using said synchronization clock for synchronizing processing of patient medical parameter data acquired concurrently from a single particular patient enabling a plurality of different medical devices to provide synchronized output patient medical parameter data and delaying said synchronized output patient medical parameter data from one of said different medical devices for presentation to a user synchronized with output patient medical parameter data from another of said different medical devices for presentation on a display in response to the received time delay, the delayed synchronized output patient medical parameter data being for presentation to a user in synchronized format on a display; and

an output interface for providing said delayed synchronized output patient medical parameter data for synchronized display with output patient medical parameter data provided by another of said plurality of different medical devices for presentation to a user in synchronized format on a display.

15. A system according to claim 14, including

a master clock generator adaptively programmable to provide synchronization clocks having frequencies compatible with a plurality of different medical devices for synchronization of processing of medical parameter data concurrently acquired from a single particular patient, said master clock generator being programmed by dividing a clock signal to provide a desired clock frequency in response to received frequency selection command data.

16. A system for synchronizing a plurality of different patient medical parameter processing devices, comprising:

a master clock generator adaptively programmable to provide synchronization clocks having frequencies compatible with a plurality of different medical devices for synchronization of processing of medical parameter data concurrently acquired from a single particular patient, said master clock generator being programmed by dividing a clock signal to provide a desired clock frequency in response to received frequency selection command data;

an output interface for providing said synchronization clocks to a plurality of different medical devices for use by said plurality of different medical devices in acquiring patient medical parameter data using a synchronization clock provided by said master clock generator for synchronizing processing of patient medical parameter data acquired concurrently from said single particular patient enabling said plurality of different medical devices to provide synchronized output patient medical parameter data for presentation to a user in synchronized format on a display;

an input interface for receiving said frequency selection command data for determining clock division; and

an adaptive delay generator for adaptively generating a time delay used in delaying synchronized output patient medical parameter data from one of said different medical devices for presentation to a user synchronized with output patient medical parameter data from another of said different medical devices for presentation on said display in response to received time delay selection command data.