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

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2.2.2.2 Toggle Switch / JoystickReplacing the scrolling arrow buttons with a single axis joystick will providepatients with an easier means to choosing the correct menu or number from theLCD. This particular joystick comes with a restrictor plate to make it one axis fromits normal two. Reducing the joystick to one axis of motion allows only up ordown inputs from the patient. The J1 low profile joystick as seen in Fig. 2.2.2.2.1on the next page has a plus or minus twelve degree movement from centerwhich is enough to avoid inadvertent inputs. This degree of movement also isn’tlarge enough to make the motion strenuous to the user when scrolling throughmenus or numbers for selection.Figure 2.2.2.2.1: Picture of J1 Low Profile "Switch Stick" Joystick from etisystems.com29
Figure 2.2.2.2.2: <strong>Engineering</strong> drawing of J1 Low Profile "Switch Stick" Joystick showingdimensions from etisystems.comThe joystick will be integrated into left side of the interface as seen in Fig.2.2.2.3.2 in the following pages to allow the user to select the confirm or cancelbuttons with their right hand much like a gaming controller.2.2.2.3 ButtonsA tactilely distinct intuitive button interface is essential to accessible operation ofthe infusion pump interface. Using only a two buttons and a switch will allow forpatients to touch and recognize the button’s location easily. The springconstant of the buttons must also be carefully determined so as to offer enoughresistance to deter accidental button pushes but not be so arduous that adisabled user cannot use the system.30
Page 11 and 12: e connected to the microprocessor r
Page 13 and 14: acket will be mounted directly to t
Page 15 and 16: Circuit ElementsThe physical link b
Page 17 and 18: Top Level MenuSetting infusionrates
Page 19 and 20: misdosages is reduced by forcing th
Page 21 and 22: Figure 2.1.2.7: Graphic User Interf
Page 23 and 24: 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: Figure 2.2.2.1.2: LCD DimensionsTab
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 and 76: Figure 2.2.2.14.2 TM4500 dimensions
Page 77 and 78: The interface must also be evaluate
Page 79 and 80: Figure 2.3.3: Opening the Pumping U
Page 81 and 82:
Figure 2.3.5: Back Panel Dismounted
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Figure 2.3.8: Connecting the Power
Page 85 and 86:
The metal arm connecting the two mo
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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
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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
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surfaces and electric static discha
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through all necessary steps before
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Adding new components has brought w
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The next step was creating the all
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With the integration of a colored L
Page 111 and 112:
http://www.metalsdepot.com/products
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12 Appendix12.1 Updated Specificati
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