Method and apparatus for transmission and storage of digital medical data

• US 7,925,759 B2
• Filed: 07/02/2008
• Issued: 04/12/2011
• Est. Priority Date: 01/14/2003
• Status: Expired due to Term

• Current Assignee: NetApp, Inc.
• Original Assignee: NetApp, Inc.
• Inventors: Ma, Keith, Montour, Michael, Kermani, Mohammad, Altman, Tym, Proseilo, Walter, Seiler, Oliver, Slik, David
• Primary Examiner(s): SALAD, ABDULLAHI ELMI
• Application Number:
  US12/216,282
• Publication Number:
  US 20090089303A1
• Time in Patent Office: 1,014 Days
• Field of Search: 709/217, 709/226, 709/238
• US Class Current: 709/226
• CPC Class Codes: G16H 10/60 for patient-specific data, e.g. for electronic patient records
• CPC Class Codes: H04L 67/1095 Replication or mirroring of data, e.g. scheduling or transport for data synchronisation between network nodes

Abstract

System for decentralized storage and rapid retrieval of medical data among geographically separate locations, connected by data paths of limited bandwidth, which optimizes transmission therebetween. Medical data is separated into bulk content and metadata. Metadata is transmitted to all locations. Bulk content is copied to selected locations based on desired duplication, available storage, distance, transmission cost, data path bandwidth or utilization, likelihood of retrieval calculated from the metadata, requests to use or prior usage of content or information from a system that manages the content. Transmission rate is limited and bulk content is queued for transmission based on priority calculated from metadata, from requests to use content or information from a system that manages the content. Optimal locations for bulk content are recalculated based on requests to use content, new patient appointments, data path or equipment failures. Copies are made or deleted. Distributed lists of locations for content are updated.

Claims

1. A method for transmission of digital data between at least two separate locations, the method comprising:

separating the data arriving at one of the locations into at least bulk content and metadata;

selecting one or more target locations from the locations for storage based on a calculation using storage capacity available at respective ones of the target locations, processor utilization available at respective ones of the target locations, and network bandwidth available to respective ones of the target locations, the calculation transforming values relating to the storage capacity, the processing utilization and the network bandwidth associated with the target locations into rankings of the target locations with respect to each other;

transmitting the bulk content to at least one of the selected target locations; and

storing the bulk content at the at least one of the selected target location %

wherein, when the bulk content has been stored at the selected target locations and an event occurs that changes the rankings of the locations, the method further comprises determining that the rankings of one or more locations have changed; and

recalculating the rankings of the locations.

2. A method as claimed in claim 1, wherein the metadata separated from the bulk content is also used in the calculation of the selected target locations for where to transmit the bulk content.

3. A method as claimed in claim 2, wherein information from at least one of an external database and an information system comprising one of an Electronic Patient Record and a Hospital Information System is also used in the calculation of the selected target locations for where to transmit the bulk content.

4. A method as claimed in claim 1, wherein the calculation used in selecting the target locations is based on a series of formulas that incorporate weighted sums and products to use weightings to transform the values relating to the storage capacity, the processing utilization and the network bandwidth associated with the target locations into a ranking of the target locations with respect to each other.

5. A method as claimed in claim 4, wherein the weightings used to calculate the rankings of the target locations are configurable on a location-by-location basis and can change over time.

6. A method as claimed in claim 1, wherein one or more selected target locations are not currently available, the method comprising:

determining that one or more selected target locations are not available due to at least one of data path failure and equipment failure;

queuing the bulk content for transmission;

storing the bulk content until the selected locations become available;

transmitting the bulk content to at least one of the selected locations and storing it.

7. A method as claimed in claim 6, further comprising re-calculating the rankings of the storage locations when the selected target locations become available and before transmitting the bulk content.

8. A method as claimed in claim 6, wherein the priority and order of the transmission of the queued bulk content is based on the metadata separated from the bulk content.

9. A method as claimed in claim 1, wherein one or more selected target locations are not optimal, the method comprising:

determining that one or more selected target locations are not optimal due to at least one of data path failure, equipment failure, historical usage and predicted usage; and

queuing the bulk content for transmission.

10. A method as claimed in claim 9, further comprising re-calculating the rankings of the storage locations before transmitting the bulk content to at least one of the selected locations for storage.

11. A method as claimed in claim 9, wherein the priority and order of the transmission of the queued bulk content is based on the metadata separated from the bulk content.

12. A method as claimed in claim 1, wherein one or more selected target locations are not optimal, the method comprising:

determining that one or more selected target locations are not optimal due to at least one of data path failure and equipment failure, historical or predicted usage;

deleting the bulk content from at least one of the selected locations.

13. A method as claimed in claim 1, wherein

the recalculating comprises:

determining a new set of selected target locations; and

selectively transmitting the bulk content to at least one of these newly selected target locations and storing it if the newly selected target location is higher ranked or not already one of the selected target locations.

14. A method as claimed in claim 13, wherein when the bulk data stored on the originally selected target locations is removed after being transmitted and stored to the newly selected target locations.

15. A method as claimed in claim 13, wherein the metadata separated from the bulk content is also used in the re-calculation of the selected target locations for where to transmit the bulk content.

16. A method as claimed in claim 15, wherein at least one of information from an external database and an information system comprising at least one of a Electronic Patient Record and a Hospital Information System is also used in the re-calculation of the selected target locations for where to transmit the bulk content.

17. An apparatus for transmission of digital data between at least two separate locations connected by optical, wired or radio frequency data paths of limited bandwidth, the apparatus employed at a first one of the locations and comprising:

a processing device;

a memory device coupled to the processing device; and

at least one network interface connected to at least one of the data paths and in communication with the processing device;

wherein the processing device is programmed to separate the data arriving at one of the locations into at least bulk content and metadata, select one or more target locations from the locations for storage based on a calculation using storage capacity available at respective ones of the target locations, processor utilization available at respective ones of the target locations, and network bandwidth available to respective ones of the target locations, and transmit the bulk content to at least one of the selected target locations for storage, the calculation transforming values relating to the storage capacity, the processing utilization and the network bandwidth associated with the target locations into rankings of the target locations with respect to each other; and

wherein, when the bulk content has been stored at the selected target locations and an event occurs that changes the rankings of the locations, the processor is programmed to determine that the rankings of one or more locations have changed, and recalculate the rankings of the locations.

18. An apparatus as claimed in claim 17, wherein one or more selected target locations are not currently available, the processing device being programmed to determine that one or more selected target locations are not available due to at least one of data path failure and equipment failure, queue the bulk content for transmission, store the bulk content in at least one of the memory device and another memory device until the selected locations become available, and transmit the bulk content to at least one of the selected locations for storage when it becomes available.

19. An apparatus as claimed in claim 17, wherein one or more selected target locations are not optimal, the processing device being programmed to determine that one or more selected target locations are not optimal due to at least one of data path failure, equipment failure, historical usage and predicted usage, and queue the bulk content for transmission.

20. A method as claimed in claim 19, wherein recalculating the rankings of the storage locations comprises determining a new set of selected target locations, the processing device being programmed to selectively transmit the bulk content to at least one of the newly selected locations for storage if the newly selected target location is higher ranked or not already one of the selected target locations.