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Welch Allyn Connectivity Server
Programmer’s guide
Software version 2.5x
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ii Welch Allyn Connectivity Server © 2011 Welch Allyn. All rights are reserved. To support the intended use of the product described in this publication, the purchaser of the product is permitted to copy this publication, for internal distribution only, from the media provided by Welch Allyn. No other use, reproduction, or distribution of this publication, or any part of it, is permitted without written permission from Welch Allyn. Welch Allyn assumes no responsibility for any injury to anyo
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iii Contents 1 - Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Intended use. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Warning and note . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Related documents. .
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iv Contents Welch Allyn Connectivity Server 7 - XML interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 8 - Contacts and specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 Contact information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
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1 1 Introduction Intended use ® The Welch Allyn Connectivity Server (WACS) is an option to the Welch Allyn Acuity Central Monitoring System. WACS consists of a server platform on which one or more of the following software options are installed: ® � The Web Server option makes Adobe Portable Document Format (PDF) printout files available from the Acuity System to certain Web browsers. ® � The AcuityLink option consists of Clinician Notifier software for non-proprietary mobile devices and adm
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2 Introduction Welch Allyn Connectivity Server Conventions The CE Mark and Notified Body Registration Number signify that the product meets all essential requirements of European Medical Device Directive 93/42/EEC. WARNING Indicates conditions or practices that could lead to illness, injury, or death. Warning and note WARNING HL7 configuration must be performed only by qualified personnel who are familiar with the HL7 Standard and with local implementation of the WACS HL7 Interface. Imp
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Programmer’s Guide Introduction 3 Related documents Document Welch Allyn Connectivity Server (WACS) Welch Allyn Connectivity Server (WACS) CD-ROM (English): Welch Allyn Connectivity Server directions for use Welch Allyn Connectivity Server programmer’s guide AcuityLink Clinician Notifier directions for use Acuity and Mobile Acuity LT Central Monitoring System Directions for use Acuity and Mobile Acuity LT Central Monitoring Systems directions for use and in-service guide CD-ROM (multilanguage):
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4 Introduction Welch Allyn Connectivity Server
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5 2 System overview Welcome! The Acuity Central Monitoring System is a real-time patient monitoring system that collects and displays vital-sign information for multiple patients over the Welch Allyn FlexNet™ network. Welch Allyn patient monitors Acuity Central Station Welch Allyn Connectivity Server (WACS) AcuityLink option Web Server option HL7 Interface option Third-Party Data Stream Interface option Within the network: Mobile devices running the Clinician Notifier program Facility compute
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6 System overview Welch Allyn Connectivity Server Data interface provided by the Welch Allyn Connectivity Server (WACS) The WACS option to the Acuity Central Monitoring System is able to provide these data interface options: � HL7 (Health Level 7) Interface option � Third-Party Data Stream Interface option (XML format) Either WACS data interface option can include one or both of these distinct modules. � Inbound HL7 ADT Data module: Admit/discharge/transfer (ADT) data from your CIS or HIS to
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Programmer’s Guide System overview 7 Data transfer and storage within the Acuity System network The Acuity System stores patient data for variable amounts of time, depending upon Acuity System license configuration. Data export from patient monitors to the Acuity System Welch Allyn portable patient monitors store vital-sign data and send it to the Acuity System in the following ways: Table 1. Patient monitor data storage and export to the Acuity System Patient Monitor Means of data export to
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8 System overview Welch Allyn Connectivity Server Data storage at the Acuity System The Acuity System stores data for a period determined by the Full Disclosure license configuration. Storage during Acuity connection to WACS Table 2. Acuity System data storage configurations and Acuity System data export to WACS a Acuity System data storage configuration WACS capability for data receipt Zero hours Continuous 24 hours Query for most recent 24 hours 96 hours Query for most recent 96 hours a. Da
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Programmer’s Guide System overview 9 Data exported from the Acuity System to WACS The Acuity System exports the following vital-sign data: Table 4. Numeric vital-sign data exported from Acuity Systems to WACS Vital sign Units Default units Preferred HL7 tag (OBX-3) Heart rate BPM (1/min) BPM (1/min) Heart Rate Temperature 1, 2 DegF (°F), DegC (°C) Temperature DegC (°C) SpO Per cent (%) Per cent (%) SPO2 2 CO In mmHg, kPa, % mmHg CO2(In) 2 CO Ex mmHg, kPa, % mmHg CO2(Ex) 2 RESP Br/M (1/min) Br/
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10 System overview Welch Allyn Connectivity Server
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11 3 HL7 standard protocols This chapter describes basic HL7 data structure as outlined in the Health Level Seven Messaging Standard. Information in this chapter is organized as follows: Health Level Seven Standard. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 HL7 low-level protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 HL7 segment-level protocols. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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12 HL7 standard protocols Welch Allyn Connectivity Server HL7 low-level protocol This section describes the low-level format of HL7 packet frames. Packet frames HL7 frames that are exchanged between the server and the client describe both sent and received data. Table 5. HL7 packet frame: low-level format Packet description Content Size (bytes) Start block 0x0B ASCII 1 Body variable bytes variable End block 0x1C ASCII 1 Carriage return 0x0D ASCII 1 HL7 segment-level protocols Th
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Programmer’s Guide HL7 standard protocols 13 Time/date in HL7 segments When importing vital-sign data into an electronic patient-charting application, use the timestamp associated with the OBR for the vital-signs record in the chart. Format Date and time in the HL7 segments are represented in this format: YYYYMMDDHHMMSS.mmm±TZTZ � Displayed time is local. � Hours are in the range 0-23. � Seconds (SS) are followed by the following: 3-digit millisecond value (which appears as 000 if no other valu
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14 HL7 standard protocols Welch Allyn Connectivity Server
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15 4 WACS outbound HL7 protocols TM The WACS Outbound HL7 Vital-sign Observations module uses Java processes to read patient data files from an Acuity System and forward the messages to a CIS server. This chapter describes WACS protocols used in the Outbound HL7 Observations module. The WACS protocols closely follow the data structure outlined in the Health Level Seven Version 2.4 Messaging Standard. Information in this chapter is organized as follows: Overview: Outbound HL7 Vital-sign Obse
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16 WACS outbound HL7 protocols Welch Allyn Connectivity Server Overview: Outbound HL7 Vital-sign Observations module Patient vital-sign observations are transferred to the CIS server in this manner: 10.250.100.201:5600 Acuity System Initiate connection to network WACS IP + port Patient data Clinical information system HL7 outbound (CIS) message WACS Outbound HL7 patient data messaging 1. WACS is configured to accept requests on a preconfigured TCP port (usually in the 5600-5700 range). 2. On
