Presentation on theme: "Dhara Amin, Michael Brennan, Eric DiBlasi, Andrew Smith"— Presentation transcript:
1 Dhara Amin, Michael Brennan, Eric DiBlasi, Andrew Smith Team LiteCureDhara Amin, Michael Brennan, Eric DiBlasi, Andrew Smith
2 BackgroundLiteCure: Manufacturing company for medical devices involving advanced laser technology for the health care and veterinary industries.Products: Deep tissue therapy units that use laser technology to accelerate the body’s natural healing process.Products are typically housed on a cart to allow the device to be transported from one patient to another in clinical settings
3 MotivationLiteCure is in need of a custom cart design that solves several problems surrounding their current cart design.Issues:Poor fiber optic and power cord managementLack of accessory storage and securing of those accessoriesAesthetic image of the cartEase of use and functionality improvementsCurrent LiteCure Cart
4 Project Scope Deliverables For Sponsor To design an aesthetically pleasing utility cart for LiteCure’s deep tissue therapy unit that coincides with their desired image and allows users to easily access and store all components of the unit in a clinical setting.Deliverables For SponsorFull Drawing Package of Final ConceptManufacturing DetailsAssembly DetailsPrototype
8 Benchmarking Cutting Edge K-Laser Anthro Cart UD PT Clinic Anthro Cart Should replace Anthro design with the vet clinic cartCutting Edge K-LaserAnthro CartUD PT ClinicAnthro CartVet Hospital
9 Design Requirements Compatible with product line Aesthetically pleasingLow costEasy to useSafe
10 Product Compatibility Need/WantMetricTestTarget ValueSupport Weight of Laser Unit and all AccessoriesWeight Capacity (lbs)Failure Testing: Statics Calculation>= 50 lbsAccommodate each unit of product linePlatform dimensions (in)Platform can accommodate largest unit (16.25 x 10.5 in)>=16.25 x 10.5 inStorage space for all accessories: (Safety Glasses, Head Attachments, Foot Pedal, UPS)-Is there storage for all required accessories?YStores Fiber Optic CableIs there storage for Fiber Optic Cable?No blockage of VentsAre all vents open to air flow?HeightInchesMeasurement30 inchesPotential questions: Why isn’t there an upper limit to the weight capacity?We need to weight all accessories, also implement a safety factor.
12 Low Cost Need/Want Metric Test Target Value Manufacturing Price Per CartMachining/Forming/Material Cost ($)Quotes/cost calculations$500-$700PackagingShipping Weight (lbs)Shipping Volume (in^3)Packaging weight and volume calculations35 to 50 lbs< 3 ft^3Number of Tools Required For AssemblyNumber of Tools (#)How many tools are required?1Where did we get a $100 for raw material cost?
13 Easy to Use Need/Want Metric Test Target Value Quick and Easy Removal and Replacement of Fiber Optic cable# of wraps, wrapping radius (in), time to wrap (s)Time Test, Survey5 wraps, >=3” wrapping radius, <30 seconds, Customer ReviewEasily roll and transition over different floor mediumsPulling Force (static and dynamic) (N)Rolling TestPasses Test (exceeds or meets current cart results)Accessory PlacementTime to remove and store accessories (s)~ 30 seconds, Customer ReviewCable Management: Fiber Optic, Power, UPS, Foot Pedal# of hanging cords, time to wrap (s)0, <30 seconds, Customer ReviewTarget values were obtained from testing the current LiteCure cartNeed to get actual metric for rolling test
14 Easy to Use Need/Want Metric Test Target Value Easy to Clean - Can cart be cleaned with bleach, cleaning spray, or wipe?YEasy to AssembleTime to assemble (mins)5-15minutesErgonomics: ShelvingSurvey: Are the shelves easily accessible and/or adjustable?Customer ReviewTarget values were obtained from testing the current LiteCure cart
15 Safety Need/Want Metric Test Target Value Stability Tipping Angle (Degree)Tipping Test: At what angle does fully loaded cart tip?10 degreesAvoid Sharp Edges/CornersNumber of Sharp Edges (#)-Locking WheelsNumber of Locking Wheels (#)Count number of locking wheelsMinimum of 2These metrics will be used to rank the team’s concepts except some tests cannot be performed until a prototype is made so we plan to make a few prototypes and rank them based on all the metrics.
16 Our Process Mockup Testing Preliminary Designs Final Design Sponsor FeedbackDesign DetailsFinal Prototype
17 Basic Component Design Platform:Where the units sitStructure:Body of the cartBase:Bottom of the cart: Where UPS sitsCaster Selection:Caster size, type, and vendorAccessory Design:Compartments for: Fiber Optic Cable, Safety Glasses, Foot pedal, Head attachments
23 Caster Selection Fastening Type: Other Considerations: Top Plate Threaded Stem Grip Ring StemOther Considerations:Wheel Diameter: 3 or 4 inchesLocking Wheels: yes or noSwivel: yes or noLoad Capacity: at least 50 lbsWarranty: at least 2 years
24 Manufacturing Research Anthro:Materials used for shelvingCapabilities of a wood laminate designCart structure materialMinimal welds in designExtreme Machining:Press breaking capabilitiesTube bending practicesWater and laser cutting capabilities
27 4th Iteration Design Chose C-shaped structure Added a locker Incorporated the feel and lines of the LiteCure devicesMaterial: Carbon steel sheet metal
28 Mockup Material: Wood Casters: 4-inch and 3-inch Standard hardware Mockup used for the following purposes:Perform tipping and rolling testEvaluate castersPerform field test (in PT clinics)Results:Increase length and decrease width of platformFront door design
29 Customer ReviewDesign: UD PT Clinic and LiteCure office used mock-up for three days and took survey.Customer review measures:Ease of UseAestheticsEasy accessory placementEasy shelf accessibilityAdequate storageEasy to transportAdequate cord managementQuick/Easy Wrapping and Removal of Fiber Optic CableCord ManagementAdequately display company logoFuturistic feelAppropriate GeometryAppropriate material selection (sheet metal)4-inch casters preferred
30 Customer Review Results: Aesthetically appealing Functional Satisfactory cord and fiber optic cable managementCustomer Review results for the questions asked about cord and fiber optic cable management. The mean values for the question are represented with correlating standard deviations.Survey Scale: 1 –Strongly Disagree , 2 –Disagree, 3 –Neither Disagree nor Agree, 4 –Agree, 5 –Strongly Agree
31 Mechanical Testing: Tipping Mention Standard (10 degrees) and measured tipping angle front, back, and side with load taken into consideration.Worst Case4 – inch Casters3 – inch CastersCurrent LiteCure CartSideways Tipping Angle11 degrees15 degrees
32 Stress AnalysisWorst Case Scenario Bending of the platform and shelves point load in the middlePull out force for PEM Fasteners
33 Final Design Material: 14 Gauge & 16 Gauge Carbon Steel Casters: 4 inch diameterFasteners: PEM fastenersFeatures: Back locker, front doorStorage space: 1.9 ft^3Height: 30 inchesWeight: 65 pounds
34 Final Design: Aesthetics C – Shaped cart with curves and lines similar to LiteCure devicesColor scheme can be used for both product linesSpace for logoFinish: Powder coated paintsLarger 4 inch casters
35 Final Design: Platform One size platform for multiple devicesRefined dimensionsPerimeter around deviceHole for cord management
36 Final Design: Structure Wide base for stabilityPEM fasteners attach all partsFlanges on shelves add strengthConverged to aesthetic design based on sponsor feedback
37 Final Design: Additional Features Front Door:Easy access to goggles and head attachmentsGoggles stored in mesh bag on front doorSpeed controlled hingeBack lockerEasy access to all shelvesUPS and miscellaneous storage spaceRotating latch
38 Final Design: Additional Features Fiber Optic ManagementHook designQuickly drape cord over hookSecure hand piece on devicePower Cord ManagementHole in top platformHole in back locker doorInternal guide for cords
39 Cost Analysis Quote of 1 Cart (machine shop) $1460 Does not include: PEM Fasteners, McMaster Hardware, Casters, Front Handle, and Fiber Optic Cable Management Hook.Quote for 1000 number of units (machine shop)$200 - $225 a unitHardware Cost: About $31 a unitPEM Fastener Cost: About $30 a unitCasters Cost: About $34 a unitA thorough cost analysis could not be obtained because company is going to manufacture who has different pricing. But with this price everything but plastic parts are considered
40 User Instructions Assembly PEM fasteners press fit in to side panels Detailed instructions for assemblyOnly 1 tool needed: WrenchPackagingCart can be broken down in to smaller, flat partsBox dimensions: 27.5 in x in x 6 in
42 Path Forward Give LiteCure drawing package and assembly instructions. LiteCure can take design to manufacturing company for start of mass production.Small changes may need to be made to the design in order to be manufactured by a specific company.More testing to sheet metal prototype: accelerated wear and overload testing
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