SimMan Improvements Advisors: Dr. Matt Weinger, MD Ray Booker Group Members: Robert Amponsah (EECE) Bobby Gibbons (BME) Brandon Miller (BME) Evans Mize (BME) Daniel Schuler (BME/EECE)

Project Description  SimMan Training simulator  Mid fidelity  Lacks aspects of patient response

Improvements  Areas to improve:  Electric stimulation and seizure  Central Line placement

Goals  Increased realism  Increased capability  Improved training quality  Reduced cost vs. METI implementation

Central Line Cost  Central line man : $16,000  SimMan: $30,000  METI: $240,000

Central Line Placement  Two placement locations  Subclavian  Neck  Converge to Superior Vena Cava

SimMan Design  Subclavian and Neck Paths  Exit through pelvis and table  Collection Bucket beneath table

Materials  Y-Connector  5/8” tubing splicer  ¼” latex tubing  ½” vinyl tubing  5/16” vinyl tubing  Velcro Strips  High Density Foam  3” mending plates  Injection ports  Blood colored fluid for veins and arteries  Drainage value

Chest Plate Modifications  Electronics presents so it can NOT leak.  Need proper access angle  Change tubing in and out of chest plate

Central Line Current Status  Final testing and assembly  Tubing installation

Electrical Cardioversion Importance  86% that receive cardioversion return to normal sinus rhythm  94% that receive medication before the cardioversion return to normal sinus rhythm  Normal sinus rhythm required to be judged stable enough for surgery

Goals of Electrocardioversion  Simulate a human’s reaction to electrical cardioversion.  Imitate a Seizure.  Choosing the most economical devices  Each should present perfect simulations  Satisfy sponsors with design, implementation, and final product

Design for Each Simulation  Design modified sponsor’s requests and constraints with table  Three pistons are setup under SimMan and embedded in table  One piston on each shoulder blade  Third piston attached to a lever, pushing up hips  Velcro used to keep piston and SimMan together

Parts and Prices  Regulator (1)– given to us by sponsor  Connectors and hoses (many)- $60  Manifold (1)-$18.65  Solenoids (3) – each – $ total  Pistons(3) each - $ total  Crimps and wiring (many) - $10  Overall Total – $ ~ $700

Regulator  Secured on top of Air Tank  Gauges tank pressure and ‘regulates’ output pressure  Multiple fittings for varying line hookups

Manifold - Intakes regulated pressure from regulator - Distributes even pressure among three different Lines -Secures firmly to bed bottom

Solenoids  3/2 setup  24 V and 1.28W impulse switches lines  Punch button switching mechanism  Reset capabilities  Works perfectly with piston

Pistons  Two valve control  Works perfectly with solenoid  Pressure range is well within range  Rugged

Problems Encountered  Late delivery of Products (March 1 st - March 25 th )  Obvious Necessity for Solenoids  Solenoid Activation is unclear  Lack of Adequate Workshop tools  Limitation to Working Hours in Workshop (10AM-5PM)

Plans to finish  Solenoid switching mechanism – today  Protoype testing - next week  Optimal Pressure determined – next week  Impulse speed for Seizure simulation – two weeks (Mid-April)