laparoscopic banding device client: dr. thomas m. julian, m.d. advisor: mitch tyler leader/bsac:...
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Laparoscopic Banding Device
Client: Dr. Thomas M. Julian, M.D.Advisor: Mitch Tyler
Leader/BSAC: Gina StuessyBWIG: Kailey Feyereisen
Communications: Anna Moeller
Outline
Problem Statement Background Current Products Product Design Specifications Design Alternatives Decision Matrix Future Work
Problem Statement
Our client would like us to design a laparoscopic banding device for tubal sterilization that is less cumbersome, traumatic, and inaccurate than the device he currently uses.
Background
Tubal ligation is a permanent form of birth control in women
“Tubes Tied” Eggs are prevented from reaching
the uterus Laparoscopic surgery Procedure reversible, but difficult One million performed a year
Current Products
Procedures vary Pomeroy, banding, clipping
Banding is good option because Non-electrical Easier to reverse
Product used is currently from ACMI
Falope Ring Band Tears Tube Fails to release rubber bands
properly
Tube is drawn inside of device with pinchers
Rubber band is then pushed off the end and the tube is released
Product Specifications
Single use Sterile and inert Accurate with a failure rate less
than 20% Less than $400 per device
Scrunchie Design
Suction grabs tube
Fingers extend and band is secured on device
Band is released when fingers close around tube
Scrunchie: Pros and Cons
Advantages Vacuum is less
traumatic than current device
Band releases more reliably
Disadvantages Construction may
be difficult which could lead to higher production costs
Tubes may still be torn
Pressure Cuff Design
Mechanism to grab the tube
Pressure cuff that inflates to larger volume Puts pressure to
pinch tube Slides off rubber
band with conical shape
Pressure Cuff: Pros and Cons
Advantages Gentler way of
pinching tube Simple for rubber
band to come off Fewer mechanical
parts
Disadvantages High pressure in
cuff could be dangerous
Cannot load multiple bands at once
New handle for surgeon to learn
Difficult to get the tube into the cuff
Stretched out memory metal coils Positioned underneath fallopian tube Released to coil around & pinch off tube
Metal Coil Design
Metal Coil: Pros and Cons
Advantages Stress to fallopian
tube is less Design simplicity
Disadvantages Material may be
less inert Method different
from current product
Decision Matrix
Scrunchie Pressure Cuff Metal CoilLow Risk to Tube (1-10) 8 8 9Material Inertness (1-10) 9 9 7Simplicity of Use (1-5)
4 2 5Total(3-25) 21 19 21
Future Work
Discuss with client Finalize the design
Decide internal mechanisms Decide materials
Order materials Construct prototype Begin preliminary testing on non-
human materials
References
http://www.acmicorp.com/acmi/user/display.cfm
http://ccli.org/nfp/contraception/tubal.php
www.tubal-reversal.net www.youtube.com
Questions
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