PCD DPI 2008-10-17 WebEx

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(DPI Profile Main Page)

Meeting Purpose

IHE PCD Device Point-of-care Integration (DPI) profile development discussions.

WebEx Information

Topic: IHE PCD DPI Profile TG

Date: Friday, October 17, 2008

Time: 10:00, Eastern Daylight Time (GMT -04:00, New York)

Duration: 90 Minutes

Note: Specific web & phone informaiton will be provided via e-mail to group members.

Contact Manny Furst for more information.

Proposed Agenda

1 Approve Minutes from previous session
2 Review Action Items
3 Application vs. Deployment Archicture
4 Review Transport Issues & Architectures for PnP
5 Topological Models Review
x Open discussion

Attachments / Materials

Minutes for approval: <add minutes links here>



Chair/Host: Todd Cooper (BSF)
Steve Borchers (Spacelabs), John Garguilo (NIST), Colin FX (Epic), Jeff Rinda (Hospira), John Rhoads (Philips), Ken Fuchs (Draeger), Phil Raymond (Philips), Steve Merritt (Baystate Health), Jan Wittenber (Philips)


Item Topic Discussion
1 Introductions & Agenda Review
- Chair


  • Agenda reviewed & approved


2 Approval of Minutes
- Chair


  • Minutes from 2008.10.15 reviewed & approved


3 PnP, CLC & Supplement Names
- Group
  • General discussion around the use of the terms "plug-and-play" and "closed-loop control".
  • Key problems are that their meanings are overloaded (imply different concepts to different people), and sometimes "politically" charged, both of which result more confusion than clarity.
  • Jan indicated that there is ALWAYS some level of configuration / pre-coordination necessary in PnP systems; in other words, OTS PnP may never be achievable. A related was the 11073-30300 standard and the pre-configuration of the access point mappings from IRDA ports to IP addresses.
  • Profile titles should be formalized as:
- Discovery & Association (incl. "self ID")
- Data Reporting (or Data Reporting Polled & Data Reporting Asynchronous
- Bi-directional Information Exchange
- External Control


  • White paper should clarify the description of PnP per the above discussion (esp. the need for pre-coordination).


  • Update DPI profile name proposals (Added to F2F discussion)
4 Wireless & Device/Patient Pairing
- Group
  • The group discussed point-of-care DPI wireless use cases & architectural issues, with the following identified:
- A device may need two radios (short & long range)
- Pairing may be accomplished manually ... though auto methods exist, they are still error prone
- Need to look at different layers of the problem ... technology dependent / independent
- ICE spec includes the need to add devices into the PoC context without disrupting any other device connections / communication.
- Must be secure and include contextual awareness
  • Given the issues, wireless should be discussed in the white paper but the profile may be delayed until the 2nd DPI cycle.


  • Wireless DPI connections will not be addressed in the first prototyping cycle.


  • Include wireless use case & related architecture discussion on Thursday afternoon @ F2F (Complete)
5 Enterprise Application vs. Deployment Architectures
- Group
Enterprise functions
VeriScan is a stand-alone system
  • What does DPI mean?
DPI "PoC":
Must be patient connected / centric
Focused on FIRST communication link
"full blown hospital information system"
Speciality systems (e.g., infusion pump management systems / gateways)
NOTE: May have a single function BUT do so across all the enterprise
  • Question: Where would Lab systems going in this paradigm?



  • In the F2F, need to see if we can come up with a model that will clearly communicate the differences between these perspectives and the PCD TF (as well as other IHE TFs). (Added to Thursday agenda)
6 Multiple Concurrent Connection Support
- Group
  • Multiple concurrent connections must be supported, since some systems such as infusion pumps need to have both DPI connections as well as connections to their remote servers.
  • DPI connections are typically "persistent"; whereas, the non-DPI connections may be either persistent or more typically intermittent.
  • This implies that DPI must provide a method for opening a "portal" to non-DPI systems.
  • Additionally, there may be multiple paths for a device's data to the "enterprise". For example, a general DPI gateway vs. published from a specialized (e.g., infusion pump) server.


  • DPI should support an "external portal" function for devices to establish (potentially concurrent) non-DPI connections, either inttermittent or persistent.


7 Updated DPI Profile Names
- Group
  • Given the discussion earlier in the day re. moving away from "plug-and-play" and "closed-loop control" ... there was a discussion about the potential profile names.
  • DPI-Discovery & Association
- Device connecting into a "PnP" network
- Discovery of other patient connected devices (incl. Schluter's nurse PDA discovering & commuicating with connected devices)
  • DPI-Data Reporting
- DRPolled
- DRAsynchronous
  • DPI-Bi-directional Information Exchange
- Device Pairing / discovery of devices & information with same patient
- Wired - port oriented / pairing operation
- Wireless pairing
  • DPI-External Control
- Open Loop
- Closed Loop
Device reporting local settings for display on a monitor or central station for clinician review (a la PIV "closing the loop")
Changes to controls w/o clinician intervention (algorithmic)
Fully automated control communication
Semi-automated control communication (human in the loop to complete the process)
- Safety Interlocks
??? Never involves clinician activation???
- Alarm silence
- Open loop control
- Use Case: Algorithm on Central ... linked to bed ... comm is broken ...
Must be "closed loop"
  • DPI - Real-time Archival [and retrieval] Management "flight recorder"
  • DPI - Application Server Platform ???
- Ability of a device to request / receive / be notification re. download of an algo / code to be run on device
ACTION: Drudge out use cases for this
- Put device in "standby" mode for communication purposes (e.g., to save battery), but to determine its status when not being used
- Poll for device asset management functions (a la MEM)



  • (Group) Flesh out attributes associated with external control ... drudge out of the use cases ...
8 Next Meeting
- Chair


  • Next meeting will be the Boston face-to-face scheduled for 2008.10.23 & 24


Next Meeting

Next meeting scheduled for Thursday & Friday, 2008-10-23 & 24 in Boston

(Reviewed & approved by PCD DPI TG 2008-10-23)

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