Accessible Infusion Pump User-Interface - Biomedical Engineering ...

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Hassam initiated the text-to-voice subproject was able to have a runningLabVIEW vi that operated with the SP03 Text-to-voice module and outputted its30 pre-programmed phrases. The same vi in a case structure form wasincorporated into the final design LabVIEW program that was used on designday to output the auditory outputs for our project.Team Member 719: Michael CahillMichael began the prototype phase of the design project by seeking tounderstand how the Baxter 6200 Flo-Gard pump worked. He reverseengineered the pumping unit including diagnosing modes of operation for thestepper motor, air sensors, occlusion sensors and door alarm. The signals goingto and from the various components were measured and examined.The next step was trying to emulate these signals. The source of each signal wassought as were the modes that produced the alarms. The service manualhelped slightly, but some signals remain irreproducible.Michael experimented with LabVIEW’s capabilities of producing and measuringsignals. He attempted to simulate those signals coming from the Baxter 6200 toits pumping unit so that the alarms might be later incorporated into the software.Michael helped in the search to identify and purchase the necessary controllerand driver pairing to run the stepper motor via LabVIEW. He also procuredmany small piece parts necessary to the operation of the prototype.Michael designed the physical layout of components within the enclosure. Hethen drafted and machined this enclosure. He mounted all components withinthe enclosure and ensured their connectivity and function.9 ConclusionAn accessible infusion pump user-interface is designed to assist patients, andusers (i.e. nurses, doctors) easy usage of a volumetric infusion pump. The mostcrucial concern regarding infusion pumps is accurate delivery of dosing ratesand volumes because over- and under-dosing could result in detrimental effectsfor the patient. Areas such as, miscalculation of desired dosage levels, dataentry error, and titration errors are of major concern when designing anaccessible infusion pump user-interface which will eliminate these relatedproblems.107
With the integration of a colored LCD screen, toggle joystick, tactile buttons,rechargeable battery, movable mounting arms, text to voice unit, blackfinprocessor, ABS casing, Baxter pump head assembly; patients with limited motorskills, auditory impairment, and visual impairment, will be easily able to accessan infusion pump with greatly reduced risks which majority of the current infusionpumps exhibit on the market.This project’s intended design approach will greatly reduce the patients’ healthrisk. By designing tactile cues, users with motor disabilities will not have great of aproblem using the interface compared to using a regular infusion pumpinterface. Vocal commands will be incorporated into the design to allow easynavigation for users with visual impairment. In addition, a visual display will beplaced on the design to assist users with auditory impairment, and provide as asafeguard in displaying accurate input values the user requires. Learning easewill be another feature provided by the design to allow easy navigation bynumerous users, especially the technology impaired. The design of the devicewill be aesthetic to the eye allowing comfort to all users. None of theaforementioned characteristics are found in modern medical infusion pumps,making this design project quite unique and worth the venture.Introducing the final accessible infusion pump user interface device into theindustrial market will greatly increase its desire from biomedical corporations.Considering majority of infusion pump users find difficulty using the pumpinterface, in addition to the device’s low budget cost, biomedical corporationswould be steadfast in implementing this device with their medical infusionpumps. Consecutively, the companies will gain great credibility in achieving amore reliable, cost-effective medical infusion pump for their patients and/orcaregivers. Considering the importance of the home infusion pumps to patienthealth, the need for an accessible interface is paramount.10 ReferencesIntroductionBrixey, Juliana. "AMIA 2002 Symposium ." Redesign and Prototype for theInterface of a Volumetric Infusion Pump Following the Usability EngineeringLifecycle 12 Nov 2002 01 Oct 2006.Garmer, Karin, Erik Liljegren, Anna-Lisa Osvalder, and Sven Dahlman. "Arguing forthe Need of Triangulation and Iteration when Designing MedicalEquipment." Journal of Clinical Monitoring and Computing Feb 2002 105-114. 01 Oct 2006 .108
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e connected to the microprocessor r
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acket will be mounted directly to t
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Circuit ElementsThe physical link b
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Top Level MenuSetting infusionrates
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misdosages is reduced by forcing th
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Figure 2.1.2.7: Graphic User Interf
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Figure 2.1.3.2: Engineering drawing
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Figure 2.1.3.4: Labview-base Blackf
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Figure 2.2.1.1: Basic Circuit Desig
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Figure 2.2.2.1.2: LCD DimensionsTab
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Figure 2.2.2.2.2: Engineering drawi
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Figure 2.2.2.4.1: Rechargeable Lead
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It is important that operation of t
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Specifications (Note: dimensions in
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Figure 2.2.2.6.2: Bracket top view
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On the casing that will contain the
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Figure 2.2.2.6.9: Casing mounting b
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death. This makes the auditory outp
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Figure 2.2.2.8.1: Basic Circuit Des
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Figure 2.2.2.9.1: Display Screen Fl
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Audio Output: “Infusion Rate Inpu
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Audio Output: “Flow rate is” Ou
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Audio Output: “To start infusion,
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Page 65 and 66: Figure 2.2.2.11.2: ABS Weld-On glue
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Page 91 and 92: Figure 2.3.18: Charger and Female C
Page 93 and 94: BatteryFigure 2.3.21: BatteryFigure
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Page 97 and 98: Figure2.3.26: DriverTesting of the
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Page 111 and 112: http://www.metalsdepot.com/products
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