Surgical Suture Delivery System By: Sarah Hembree, Ryan Ruehl, Matt Larson Project Advisor: Dr. Raul Guzman.

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Presentation transcript:

Surgical Suture Delivery System By: Sarah Hembree, Ryan Ruehl, Matt Larson Project Advisor: Dr. Raul Guzman

Surgeon Anesthesiologist Scrub Nurse Circulating Nurse Personnel in OR Tasks of the Circulating Nurse Call family of patient Obtains and sets up all instruments used during surgery Documents entire surgery

Project Justification Cost Effective – Less TIME spent waiting in the operating room – Fewer sutures wasted Reduced work load for the circulating nurse

Project Goal To design a device that delivers different types of sutures from their packages to the sterile environment of the operating table for use during surgery

Dr. Guzman’s Prototype High maintenance Non-economical Can open all types Dispenses in a sterile manner

Proposed Suture Package Separation Techniques Vacuum Method – it sucks Thermal Method – its hot Friction Method – no lubrication required Crimp Method – inspired by 80’s hair Cutting Method – sharp, very sharp Velcro Method – yeah velcro Electrostatic Method – its shocking

SSDS Prototype

The Sutures Aluminum and plastic wrappers; up to 12 different manufactured types! Requires up to 2 lbs of force to open up the non-sterile package MinimumsMaximums seal0.5 cm/0.187"0.7 cm/0.25 " flap1.6 cm/0.63"2.5 cm/0.984" length12.1 cm/4.76"15.5 cm/6.1" width5.7 cm/2.25"6.3 cm/2.5" thickness1/16"3/16"

Prototype: Suture Cassette Holds 6 different types Each compartment designed to hold sutures Spring tension keeps the sutures pressed against the outer wall Rotated by a servo motor Easy to refill

Force Calculations Spring Constant calculated to be N/m Sum of Forces of packet in cassette is 4.45 N Cf of Plexiglas is 0.21 Maximum force to remove suture from cassette is N.

Vacuum Method Centrifugal Blower 24 V Brushless Motor Maximum Flow 50 CFM Courtesy of:

SSDS Process

Microprocessor Control BASIC Stamp II – fully programmable I/O pins to directly interface TTL-level devices and connect to non-TTL devices controls and processes input controls timing and switching of motors and solenoids controls display

Future Work Continue building device Program the microprocessor Prepare for Final Poster Session