progress report patient positioning aid e. vargas, e. kordieh, m. britan department of biomedical...

Progress Report

Patient Positioning AidE. Vargas, E. Kordieh, M. Britan

Department of Biomedical Engineering

April 7, 2006

Outline

• Background

• Our Design

• Accomplishments

• Future protocol

• Acknowledgements

Background

• RERC 2005-2006:– Aim: Versatile, low-cost, easy-to-adjust patient positioning aid

that works with a range of examination table…and meets the customer needs below.

• Patients with disabilities– Do not necessarily lack access; however, current conditions

make it very difficult for the user and therapist/clinician to perform proper examinations.

Background (cont’d)

Patient Specifications• Bruce

– Renal failure, manual wheelchair• Joan

– Heart failure, old, weak, hard of hearing• Lloyd

– Type II Diabetes, overweight• Sophia

– On heparin, limited right arm function, uses a cane• Arnold

– Parkinson’s, Diabetes, suffers from slight to moderate tremors• Dave

– Limited use to right arm and leg, may use a scooter.

Our Design

• RERC 2005-2006– “imaging technologies”…MRI, CT Scan, X-

ray

• Our Choice: Phillips Achieva 3.0T

Our Design

• The foam contours to the user and the user’s weight is distributed over the surface of the cushion.

• Adjustments are made using two-way air valves that release air to immerse the user in the foam.

Accomplishments

• Reverse Engineering– Varilite ProFormNX– Analysis on:

• Foam

• Air valves

• Tubing

• Material Covering / Sealing

Accomplishments

• Discoveries 1.- Foam is terrible

quality.

2.- Air valves are ok; hard to get.

3.- Tubing is good; diameter small

4.- Material covering is nylon; difficult to seal.

• Improve / Solution1.- Use laminar foam (i.e.,

pudgee/sunmate combo.

2.- Use medically accepted open/close valves.

3.- Use more heavy-duty tubing

4.- Samples of neoprene; access to heat seal machine.

Accomplishments

• Raw material acquisition.– Foam – BioDynamics / Bella– Air valves - ProRhythm– Tubing - ProRhythm– Material Covering –ProRhythm.– Sealing Machine – BioDynamics / ProRhythm

Accomplishments

• Measurements– All measurements have been conducted

(twice).– Second time, measurements were also

conducted with Mr. R. Vargas, for secondary opinions on design and validity of measurements.

Future Protocol

• What’s Next?– Week of Spring Break

• Test out samples of neoprene with heat sealer.

• Acquire neoprene/tubing interface (Qosina)

• Cut foam to specific dimensions.

• Encapsulate the foam.

• Create outer covering(s) of Naugahyde (vinyl).

Future Protocol (cont’d)

• If time remains…– Create patient restraints.

• Body / Chest/ Arm harness

• Wedges

– Test out our product:• Survey

• Demonstrations, etc.

Future Protocol (cont’d)

• URECA– Presentation: April 26th, 2006

• RERC 2005-2006– Website

• Final paper, Digital Images of Final Prototype, Video Clip of Prototype in Action, Design Alternative(s), Detailed Cost Analysis.

– Presentation: ???

• BME 440/441 – Senior Design– Final Paper: May 2006

Acknowledgements

• Special Thanks to:– Dr. Helmut Strey – Department of Biomedical

Engineering, Stony Brook University– Mr. Raul Vargas - BioDynamics Ltd– Mr. David Rabbiner - Rabson Rehab Sales– Mr. Rob Pacheco - ProRhythm– Erin McCormack – PhD Student, Department

of Biomedical Engineering.