Powered Tub Lift MSD1 Group P14006 Agenda Introductions Project - - PowerPoint PPT Presentation

Powered Tub Lift

MSD1 Group P14006

Agenda

• Introductions
• Project Overview
• Problem Statement & Deliverables
• Stakeholder(s)
• Use Scenarios
• Operations Break Down
• Customer Requirements
• Engineering Requirements
• Project Plan
• Benchmarking
• Risk Assessment
• Conclusions

Introductions

Name Major/Role Amos Baptiste Industrial & Systems Engineer/Team Leader Jeremy Czeczulin Mechanical Engineer Andrew Hughes Mechanical Engineer Richard Prilenski Mechanical Engineer

Current State

• Current device is not

stable

• Client feels unsafe
• Broken arm rest on left

side due to tub side shelf

• Current model not in

production

• Parts have been

replaced/fixed due to wear

• Parts that do still work do

not always operate properly

• User has difficulty

accessing chair

Desired State

• Device has a stable base and build
• Device is easy to access
• Provide leg lifts to assist tub entry and exit
• Easy to operate
• Reclining features
• Transportable
• Meets requirements to satisfy the 10th-70th

percentile of men and women, accommodating as many disabilities as possible.

P14006 Problem Statement

• Bathtub lift – a device that provides assistance to an individual with

physical disabilities, including limited balance, coordination, or mobility

• Can reduce the difficulties of raising and/or lowering an individual

into the tub by utilizing a powered seat and a simple control module

• As population grows the number of aged individuals will greatly

increase making demand for assist devices increase

• Project motivation – Theresa Loce
• Improve the current design
• Current device does not meet her needs
• Powered lift that is sturdy, comfortable, easy to use/clean, makes

minimal noise, and takes into account physical limitations of user

• Ultimate goal – user maintains autonomy and privacy

Project Deliverables

• Effectively assist the user for bathing purposes
• Device is easy to access from starting position
• Minimized operating time
• Provide a comfortable and supportive seating area
• Accessible to 10th-70th percentile for both genders, regardless
• f age
• Reasonably lightweight and portable, able to be transported

Stakeholder(s)

• Primary Customer: Theresa Loce
• Contact: 585-647-2329
• Secondary Customer (s): Wheel chair users/handicap public & Elizabeth

DeBartalo, Hospitals (RGH), Nursing Homes, suppliers/vendors, & individuals recovering from knee surgeries.

• Contact: eademe@rit.edu
• Faculty Guide: Art North
• Contact: ajnddm@rit.edu
• Sponsor (financial support): RIT & Theresa Loce

Use Scenarios

• Bathtub lifts are effective for many worst case scenarios for

the disabled and elderly people. However one critical issue remains, ease of access to the bathtub lift.

• Due to individuals’ mobility disabilities, they often have a hard

time being able to position themselves on the seat of the lift.

• Issues such as slipping or periods of instability may occur to the

individual needing to get in the actual tub before lowering the lift.

• Individuals’ confidence are decreased due to uneasy feelings of

being able to access the bathtub lift.

Operations Break Down

Customer Requirements

Engineering Requirements

Engineering Matrix

Project Plan (WK 4-6)

Benchmarking

• Current Models:
• Maximum weight supported 200-375 lbs
• Uses suction cups for stability
• Uses a waterproof hand remote
• Powered by a rechargeable battery
• Minimum lift height range 2.5”-5”
• Maximum lift height range 17”-21”
• Product total weight 19-27.5 lbs
• Around 7 lifts per battery charge
• Duration of Stroke: Up-50s Down-35s

Risk Assessment

• Ensure user does not fall/slip off device
• Moderate the water temperature
• Water power supply inconsistent – psi level jump due to drop in

water pressure

• Electric power supply inconsistent – charge from battery may not be

sufficient to operate device when running low

• Device does not fail under loading – must be able to lift well over

the minimum requirement

• Not being able to fulfill requirements of broad user base

(height/weight differences)

• Fixture dimensions – not able to fit in tub
• Safety of user’s legs – when fixture is lowering, allow adequate

clearance, and also while moving user out of tub.

• Transfer from starting position to the device – possible falling injury

Phase I - Retrospective

• Things we have learned as a team:
• Understanding each others’ strengths and weaknesses.
• Assigning roles according to ones’ strengths.
• Proper communication to minimize wasted time.
• Planning ahead of time to effectively utilize given time the whole

team is available.

• Take project one step at a time, do not overlook detail that is

critical to the customer.

• Understand each others’ ideas and as a team choose the best
• nes to ensure best results.

Questions?