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

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Figure 2.2.2.14.3 TM4500 driver wiring from the controller and to the motor2.2.2.15 ImplementationThe Blackfin chip is the nerve center of the design. The signals from the infusionpump motor alone are transmitted and received by the Blackfin chip. Thismicrocontroller sends the signals to the text-to-voice unit, controller, and theLCD display. Input from the user in response to this information would beentered via the buttons and joystick and processed by the microcontroller. Thiswill either result in a change in the GUI which will be sent back to the display (asshown in display flow diagram) and text-to-voice unit, or a signal sent to theinfusion pump itself to generate a desired operation.The Blackfin chip will make operation intuitive and easy. It will allow for aLabVIEW panel to serve as the GUI, which will make the device intuitive andwelcoming. The chip itself will allow signals to be routed efficiently, ensuring theaccurate operation of the device.2.2.2.16 TestTo test the viability of design, the performance of the interface-enhancedinfusion pump must be compared against that of a regular infusion pump. Todo this, the infusion rate with and without the interface must be measured toensure that the device is communicating the desire performance accurately tothe pump.75
The interface must also be evaluated for accessibility. This can beaccomplished by having users unfamiliar with the design, attempt to use it whilehaving their capabilities (visual, auditory, tactile) reduced. For example, anarthritic patient could be simulated by immobilizing portions of the test subjecthands.2.3 PrototypeThe accessible infusion pump interface consists of two modules. The twomodules house separate components and are joined by a flexible metal arm.The larger of the two modules is the pump unit housing. This module containsthe majority of components for the operation of the pump. The pump unithousing is by far the heavier of the two units. This was done so as to keep themajority of the device’s weight centered on the IV pole.Figure 2.3.1: <strong>Pump</strong> Unit HousingImmediately noticeable on the front of the pump unit housing is the off-whitedoor for the pumping mechanism. This pumping mechanism was extractedfrom a Baxter 6200 Flo-Gard series infusion pump. It contains, as seen in Figure76
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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
Page 25 and 26: Figure 2.1.3.4: Labview-base Blackf
Page 27 and 28: Figure 2.2.1.1: Basic Circuit Desig
Page 29 and 30: Figure 2.2.2.1.2: LCD DimensionsTab
Page 31 and 32: Figure 2.2.2.2.2: Engineering drawi
Page 33 and 34: Figure 2.2.2.4.1: Rechargeable Lead
Page 35 and 36: It is important that operation of t
Page 37 and 38: Specifications (Note: dimensions in
Page 39 and 40: Figure 2.2.2.6.2: Bracket top view
Page 41 and 42: On the casing that will contain the
Page 43 and 44: Figure 2.2.2.6.9: Casing mounting b
Page 45 and 46: death. This makes the auditory outp
Page 47 and 48: Figure 2.2.2.8.1: Basic Circuit Des
Page 49 and 50: Figure 2.2.2.9.1: Display Screen Fl
Page 51 and 52: Audio Output: “Infusion Rate Inpu
Page 53 and 54: Audio Output: “Flow rate is” Ou
Page 55 and 56: Audio Output: “To start infusion,
Page 57 and 58: Audio Output: “Infusion Rate Inpu
Page 59 and 60: Audio Output: “Flow rate is” Ou
Page 61 and 62: Audio Output: “Infusion starting
Page 63 and 64: Figure 2.2.2.10.2: Labview-base Bla
Page 65 and 66: Figure 2.2.2.11.2: ABS Weld-On glue
Page 67 and 68: Figure 2.2.2.11.6: User Interface U
Page 69 and 70: Figure 2.2.2.12.1: Pump head assemb
Page 71 and 72: 2.2.2.13 Anaheim Automation PCL601
Page 73 and 74: Table 2.2.2.13.1: Specifications fo
Page 75: Figure 2.2.2.14.2 TM4500 dimensions
Page 79 and 80: Figure 2.3.3: Opening the Pumping U
Page 81 and 82: Figure 2.3.5: Back Panel Dismounted
Page 83 and 84: Figure 2.3.8: Connecting the Power
Page 85 and 86: The metal arm connecting the two mo
Page 87 and 88: Figure 2.3.13: Two of the Six Bolts
Page 89 and 90: LCD DisplayButtonJoystickFigure 2.3
Page 91 and 92: Figure 2.3.18: Charger and Female C
Page 93 and 94: BatteryFigure 2.3.21: BatteryFigure
Page 95 and 96: Figure 2.3.24: Pumping Unit Connect
Page 97 and 98: Figure2.3.26: DriverTesting of the
Page 99 and 100: "strand” the user.• Give users
Page 101 and 102: surfaces and electric static discha
Page 103 and 104: through all necessary steps before
Page 105 and 106: Adding new components has brought w
Page 107 and 108: The next step was creating the all
Page 109 and 110: With the integration of a colored L
Page 111 and 112: http://www.metalsdepot.com/products
Page 113: 12 Appendix12.1 Updated Specificati
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