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

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Figure 2.1.3.6: ABS casing closed and opened from Hammondmfg.com2.2 Optimal Design2.2.1 ObjectiveFor patients with physical limitations, infusion pumps can be difficult to operatecorrectly. Whether it is a vision problem, a hearing impairment or an ailmentthat restricts motor function, disabilities increase the risk of patient error in deviceoperation. The Accessible Infusion Pump Interface will attempt to alleviatethese concerns by providing a highly visible, easy-to-use system with which theinfusion pump can be set. The system will also allow inputs and outputs to betransmitted audibly and it will use controls that are easy to manipulate and thatcan be identified by touch. Warnings from the interface will need to becommunicated through both auditory and visual cues in order to encompassthe wide variety of the patients’ disabilities.25
Figure 2.2.1.1: Basic Circuit DesignThe subunits section of this report details the major components of this Design. Atext-to-voice unit are used to interface with the user. Buttons and a joystickallow for easy user input. A Blackfin chip will serve as the microcontroller andcoordinate between the elements of the interface and the pump itself. Theconnection to the pump will be made through a mountable flexible arm. Amounting block will secure the interface to the IV stand when not in use.In this design, the Blackfin chip will replace the need for the microcontroller. Themounting arm will allow the patient to easily position the interface to his/herliking. Packaging was added and a pair of buttons has been replaced with ajoystick. The software architecture was redesigned to enhance the ease of useof the interface for the patient. The LCD display was changed from a graphicalto a colored display with a power and video input.Power plugs were also included to power the stepper motor, as well as theentire device through a 120VAC outlet. A new 12V rechargeable battery wasselected to operate the user-interface along with a recharger to continuouslyallow the pump to operate. The voltages will be controlled with voltageregulators and a printed circuit board.2.2.2 Subunits2.2.2.1 CrystalFontz America, Inc. 20x4 Character LCD (Part #:CFA634-YFB-KS)26
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: Figure 2.1.3.4: Labview-base Blackf
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 and 76: Figure 2.2.2.14.2 TM4500 dimensions
Page 77 and 78:
The interface must also be evaluate
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Figure 2.3.3: Opening the Pumping U
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Figure 2.3.5: Back Panel Dismounted
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Figure 2.3.8: Connecting the Power
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The metal arm connecting the two mo
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Figure 2.3.13: Two of the Six Bolts
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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
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Figure2.3.26: DriverTesting of the
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"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
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http://www.metalsdepot.com/products
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12 Appendix12.1 Updated Specificati
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