1. Laparoscopic Banding Instrument
Dr. Thomas M. Julian – Client
Professor Mitch Tyler – Advisor
Kailey Feyereisen – Team leader
Tyler Witt – BSAC
Gina Stuessy – Communications
Anna Moeller – BWIG

2. Abstract
This semester our team improved our design of a device for laparoscopic banding that would be less traumatic and more reliable than current devices used by surgeons. We completed preliminary testing on the mechanisms involved and are now working on constructing a 2X larger model to test the feasibility of the design.

3. 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

4. Current Products Procedures vary Banding is good option
Pomeroy, banding, clipping
Banding is good option
Non-electrical
Easier to reverse
Product used is currently from ACMI
Falope Ring Band®
Tears Tube
Fails to release rubber bands properly

5. Tube is drawn inside of device with pinchers
Rubber band is then pushed off the end and the tube is released

6. Problem Statement
Our client asked us to design a laparoscopic banding device for tubal sterilization that is less cumbersome, traumatic, and inaccurate than the device he currently uses.

7. Design Suction Mechanism Band Release Gentler on fallopian tube
Secure hold during band release
Band Release
Threaded knob releases bands more accurately
Resorbable separator between bands to ensure proper release

8. Design
3D CAD Model

9. Design Spring Mechanism Threaded Knob
Controlled insertion/removal of syringe
Threaded Knob
Controlled release of bands

10. Design Pros Cons Increased user control
Compatible with currently available instruments (i.e. trochan, bands, band loader)
Familiar design
Meets client requirements
Cons
Some learning of instrument function necessary
Ease of band loading not addressed

11. Testing Suction Mechanism
Tested on sleep fallopian tube to determine pressure needed to secure tube Kailey

12. Future Work Decide and order final materials
Delrin tubing
Radel (poly)
Aluminum
Stainless Steel
Begin constructing smaller prototype
Design instrument to ease band loading
Test band release of final prototype
Acquire FDA approval
Kailey
Delrin Round Stock Radel Medical Instrumentation

13. Conclusion
This design has promise to be less traumatic, more reliable, and easier to use than the current devices on the market. In the following months we will construct the device to scale and test on vessel or fallopian tissue.
Kailey

14. References http://www.acmicorp.com

15. Questions?