Mike Anderson - Pitt



Number: |PDS - 1 |Revision: |4 | |

|Project: |Wheelchair-Mounted Transfer Assist Device |

|Title: |Product Design Specifications |

|UNCONTROLLED DOCUMENT UNLESS ISSUED WITH A RED STAMP | |

|This document is the confidential property of the Wheelchair-mounted transfer assist device group |STAMP HERE |

|and may not be reproduced without prior written consent | |

|Revision Approvals: |Date |

|Author |Michael Anderson, Andrew Feola, Jill Marion, and Bryan Shelly |4/18/2006 |

|Clinical |Alicia Koontz, PhD, RET and Jeremy Puhlman, BSE |4/18/2006 |

|Engineering |Michael Anderson and Andrew Feola |4/18/2006 |

|Quality Assurance |Jill Marion, and Bryan Shelly |4/18/2006 |

|General Management |Michael Anderson, Andrew Feola, Jill Marion, and Bryan Shelly |4/18/2006 |

Product- Wheelchair armrest modification to aid in patient transfer.

Who- Wheelchair patients (in manual and powered wheelchairs). The wheelchair user’s insurance company or the wheelchair user would be the purchaser.

What- An armrest modification that contains a built-in transfer board mechanism. The armrest will house a transfer board that can slide out when the patient needs to transfer

Why- To reduce the need for a permanent caregiver in performing wheelchair transfers. To eliminate the need for the patient to carry around a bulky transfer board. To aid the patient in performing level transfers.

Where- The modification would occur on the armrest of the chair. The product would be available for use by the patient anywhere that current transfers can be performed.

How- Modify the armrest of a wheelchair in such a way that it contains a built-in transfer board to eliminate the need to carry around a separate bulky board. This will be done by modeling with SolidWorks 2005 3D design software and then manufacturing the part by wire EDM.

Appearance- The product should look as similar to a normal wheelchair armrest as possible for the ease of mind of the customer (so it doesn’t stand out too much). Prototype silver in color due to aluminum 6061 alloy. Mass produced products black due to plastic injection molding.

Size- Armrest housing compartment: .75” x 9” x 10.5”

Transfer board will fit inside this housing. Transfer board dimensions are .375” x 8” x 8”

When extended and unfolded for a transfer, board will be approximately .75” thick (tapered down to .375” at the end) x 9” wide x 18.5” long

Weight- The total weight (armrest housing + transfer board) of prototype is 9 pounds. Mass produced products will be approximately 4 pounds due to plastic composition.

Materials- Prototype made out of aluminum 6061 alloy and contains steel nuts and bolts. Mass produced products made from polypropylene plastic injection molding.

Competition- The main competitors would be companies that make transfer boards, transfer benches and ceiling or wall mounted transfer devices. The advantage that our product offers is that it is contained within the wheelchair itself and is therefore very portable.

Customer- The insurance company of the wheelchair user would be the customer for this product or the wheelchair user him/herself.

Quantity- One product would be used on a wheelchair. Product can aid in transfers to either side of the chair or to the front.

Legal/Safety- The main safety issue with this product would involve a patient falling from the board while performing a transfer.

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