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Dhara Amin, Michael Brennan, Eric DiBlasi, Andrew Smith Team LiteCure.

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Presentation on theme: "Dhara Amin, Michael Brennan, Eric DiBlasi, Andrew Smith Team LiteCure."— Presentation transcript:

1 Dhara Amin, Michael Brennan, Eric DiBlasi, Andrew Smith Team LiteCure

2 LiteCure: 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 bodys 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 Background

3 Motivation Current LiteCure Cart LiteCure is in need of a custom cart design that solves several problems surrounding their current cart design. Issues: Poor fiber optic and power cord management Lack of accessory storage and securing of those accessories Aesthetic image of the cart Ease of use and functionality improvements

4 Project Scope To design an aesthetically pleasing utility cart for LiteCures 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 Sponsor Full Drawing Package of Final Concept Manufacturing Details Assembly Details Prototype

5 Product Line 15 Watts 9 watts 12 watts 10 watts

6 Hand Piece and Fiber Optic Cord Hand Piece Fiber Optic Cable: 3 meter length Minimum bend radius of 3 inches

7 Product Accessories Patient GlassesOperator GlassesLaser Head Attachments Doggles (Veterinary Use)UPS SystemFoot Pedal (10 Watt Unit)

8 Benchmarking Cutting EdgeK-LaserAnthro Cart UD PT Clinic Anthro Cart Vet Hospital

9 1.Compatible with product line 2.Aesthetically pleasing 3.Low cost 4.Easy to use 5.Safe Design Requirements

10 Product Compatibility Need/WantMetricTestTarget Value Support Weight of Laser Unit and all Accessories Weight Capacity (lbs) Failure Testing: Statics Calculation >= 50 lbs Accommodate each unit of product line Platform dimensions (in) Platform can accommodate largest unit (16.25 x 10.5 in) >=16.25 x 10.5 in Storage space for all accessories: (Safety Glasses, Head Attachments, Foot Pedal, UPS) -Is there storage for all required accessories? Y Stores Fiber Optic Cable-Is there storage for Fiber Optic Cable? Y No blockage of Vents-Are all vents open to air flow? Y HeightInchesMeasurement30 inches

11 Aesthetically Pleasing Need/WantMetricTestTarget Value Company Image-SurveyCustomer Review Geometry-SurveyCustomer Review Futuristic-SurveyCustomer Review Material Selection-SurveyCustomer Review Surface Finish-SurveyCustomer Review Casters-SurveyCustomer Review

12 Low Cost Need/WantMetricTestTarget Value Manufacturing Price Per Cart Machining/Forming /Material Cost ($) Quotes/cost calculations $500-$700 PackagingShipping Weight (lbs) Shipping Volume (in^3) Packaging weight and volume calculations 35 to 50 lbs < 3 ft^3 Number of Tools Required For Assembly Number of Tools (#)How many tools are required? 1

13 Easy to Use Need/WantMetricTestTarget 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 Review Easily roll and transition over different floor mediums Pulling Force (static and dynamic) (N) Rolling TestPasses Test (exceeds or meets current cart results) Accessory PlacementTime to remove and store accessories (s) Time Test, Survey~ 30 seconds, Customer Review Cable Management: Fiber Optic, Power, UPS, Foot Pedal # of hanging cords, time to wrap (s) Time Test, Survey0, <30 seconds, Customer Review

14 Easy to Use Need/WantMetricTestTarget Value Easy to Clean-Can cart be cleaned with bleach, cleaning spray, or wipe? Y Easy to AssembleTime to assemble (mins) -5-15minutes Ergonomics: Shelving-Survey: Are the shelves easily accessible and/or adjustable? Customer Review

15 Safety Need/WantMetricTestTarget Value StabilityTipping Angle (Degree) Tipping Test: At what angle does fully loaded cart tip? 10 degrees Avoid Sharp Edges/CornersNumber of Sharp Edges (#) -0 Locking WheelsNumber of Locking Wheels (#) Count number of locking wheels Minimum of 2

16 Preliminary Designs Sponsor Feedback Final Design Final Prototype Testing Design Details Mockup Our Process

17 Basic Component Design Platform: – Where the units sit Structure: – Body of the cart Base: – Bottom of the cart: Where UPS sits Caster Selection: – Caster size, type, and vendor Accessory Design: – Compartments for: Fiber Optic Cable, Safety Glasses, Foot pedal, Head attachments

18 Structure Design

19

20 Platform Design

21 Base Design

22 Caster Selection Structure and Wheel Material Single Wheel Caster Twin Wheel Caster Thermoplastic Polyurethane Polyolefin Thermoplastic Elastomer

23 Caster Selection Fastening Type: Top Plate Threaded Stem Grip Ring Stem Other Considerations: Wheel Diameter: 3 or 4 inches Locking Wheels: yes or no Swivel: yes or no Load Capacity: at least 50 lbs Warranty: at least 2 years

24 Manufacturing Research Anthro: Materials used for shelving Capabilities of a wood laminate design Cart structure material Minimal welds in design Extreme Machining: Press breaking capabilities Tube bending practices Water and laser cutting capabilities

25 2 nd Iteration Design

26 3 rd Iteration Design

27 Chose C-shaped structure Added a locker Incorporated the feel and lines of the LiteCure devices Material: Carbon steel sheet metal 4 th Iteration Design

28 Mockup Material: Wood Casters: 4-inch and 3-inch Standard hardware Mockup used for the following purposes: Perform tipping and rolling test Evaluate casters Perform field test (in PT clinics) Results: Increase length and decrease width of platform Front door design

29 Customer Review Design: UD PT Clinic and LiteCure office used mock-up for three days and took survey. Customer review measures: Ease of UseAesthetics Easy accessory placement Easy shelf accessibility Adequate storage Easy to transport Adequate cord management Quick/Easy Wrapping and Removal of Fiber Optic Cable Cord Management Adequately display company logo Futuristic feel Appropriate Geometry Appropriate material selection (sheet metal) 4-inch casters preferred

30 Customer Review Results: Aesthetically appealing Functional Satisfactory cord and fiber optic cable management Survey Scale: 1 –Strongly Disagree, 2 – Disagree, 3 –Neither Disagree nor Agree, 4 – Agree, 5 –Strongly Agree Customer 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.

31 Mechanical Testing: Tipping Worst Case4 – inch Casters3 – inch CastersCurrent LiteCure Cart Sideways Tipping Angle 11 degrees15 degrees

32 Stress Analysis

33 Final Design Material: 14 Gauge & 16 Gauge Carbon Steel Casters: 4 inch diameter Fasteners: PEM fasteners Features: Back locker, front door Storage space: 1.9 ft^3 Height: 30 inches Weight: 65 pounds

34 Final Design: Aesthetics C – Shaped cart with curves and lines similar to LiteCure devices Color scheme can be used for both product lines Space for logo Finish: Powder coated paints Larger 4 inch casters

35 Final Design: Platform One size platform for multiple devices Refined dimensions Perimeter around device Hole for cord management

36 Final Design: Structure Wide base for stability PEM fasteners attach all parts Flanges on shelves add strength Converged to aesthetic design based on sponsor feedback

37 Final Design: Additional Features Front Door: Easy access to goggles and head attachments Goggles stored in mesh bag on front door Speed controlled hinge Back locker Easy access to all shelves UPS and miscellaneous storage space Rotating latch

38 Final Design: Additional Features Fiber Optic Management Hook design Quickly drape cord over hook Secure hand piece on device Power Cord Management Hole in top platform Hole in back locker door Internal 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 unit Hardware Cost: About $31 a unit PEM Fastener Cost: About $30 a unit Casters Cost: About $34 a unit

40 User Instructions Assembly PEM fasteners press fit in to side panels Detailed instructions for assembly Only 1 tool needed: Wrench Packaging Cart can be broken down in to smaller, flat parts Box dimensions: 27.5 in x in x 6 in

41 Design Validation

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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