2. IV R

3. TUBI

4. NG

5. ORGA

6. NIZE

8. Authors Blake Hondl Amit Mehta Ryan Pope Kristen Sipsma April Zehm Katie Zenker Katie Zenker

9. Client & Advisor Dr. Tim Corden, M.D Medical Director Pediatric Critical Care Unit UW Children's Hospital Professor Willis Tompkins Department of Biomedical Engineering

10. Abstract The UW Children’s hospital currently has no organizational system for IV tubing. IV lines extend from multiple syringe pumps to one patient and become entangled, especially during transport. A prototype was assembled in which a length of IV tubing is wound around a spool. Automatic recoil is controlled by a constant force spring-loaded system that allows for patient movement by retracting or extending extra lengths of IV tubing.

11. Problem Statement The goal of this project is to create an IV tubing organizer to prevent the entanglement of several IV lines, while maintaining the functionality of an IV tube. Use of this device will increase both patient safety and hospital efficiency. The goal of this project is to create an IV tubing organizer to prevent the entanglement of several IV lines, while maintaining the functionality of an IV tube. Use of this device will increase both patient safety and hospital efficiency.

12. Background Information Pediatric Patients Pediatric Patients –Intensive care patients –Connected to multiple IV lines  Causes confusion and entanglement  Places patient at risk  Consumes staff time  Increased risk during transport

13. Design Constraints Safe for patient Safe for patient Does not occlude IV line Does not occlude IV line Lightweight and inexpensive Lightweight and inexpensive Disposable, but re-loadable Disposable, but re-loadable Need not be sterile Need not be sterile Non-magnetic materials Non-magnetic materials Easy to operate Easy to operate

14. Preliminary Design Lego Model Lego Model –Tubing ends: one fixed, one adjustable –Clamping feature –Manual operation  Uses handle to coil tubing

15. Chosen Design Spring recoil mechanism Spring recoil mechanism –IV tubing in constant tension –No manual retraction Framework consists of connected plastic discs Framework consists of connected plastic discs Rotating core Rotating core Constant force spring To syringe pump To patient

16. Prototype Construction Acquired materials Acquired materials –Plexiglass –Plastic cylinder –Extension spring –Epoxy Initial prototype constructed Initial prototype constructed Functional prototype Functional prototype –Piecewise construction –Addition of spring

17. Functional Prototype Side view schematic

18. Functional Prototype Composed primarily of plastic Composed primarily of plastic Inexpensive Inexpensive Spring exerts a force of ~⅜ lb on IV tubing Spring exerts a force of ~⅜ lb on IV tubing Easy to use Easy to use

19. Constant Force Springs Type of coiled extension spring Type of coiled extension spring Maintains a constant force regardless of extension length Maintains a constant force regardless of extension length –Avoids linear force build-up –Reduces risk of uncontrolled recoil at larger extensions http://www.trakar.com/tr_constant.htm

21. Cost Analysis ⅛” plexiglass sheet (0.25 ft 2 )=$0.55 ⅛” plexiglass sheet (0.25 ft 2 )=$0.55 1 ½” diam. plexiglass tube (¾” long)=$0.81 1 ½” diam. plexiglass tube (¾” long)=$0.81 Constant force spring =$2.00 Constant force spring =$2.00 ⅛” x 1 ½” nylon screws & nuts (3)=$0.70 ⅛” x 1 ½” nylon screws & nuts (3)=$0.70 ⅛” x ½” nylon screw & nut (1)=$0.10 ⅛” x ½” nylon screw & nut (1)=$0.10 ⅛” x ⅜” nylon screw & nut (1)=$0.10 ⅛” x ⅜” nylon screw & nut (1)=$0.10 Plastic welder epoxy (1 oz.)=$0.75 Plastic welder epoxy (1 oz.)=$0.75 Total=$5.01 Total=$5.01

22. Future Work Increase diameter of sides to prevent obstruction of IV tubing Increase diameter of sides to prevent obstruction of IV tubing Research fluid dynamics Research fluid dynamics –Determine possible flow restrictions Determine FDA-approved materials Determine FDA-approved materials Use color coding for organizational purposes Use color coding for organizational purposes Determine placement of multiple devices Determine placement of multiple devices –Receptacle or clamps Testing in the hospital environment Testing in the hospital environment –Mechanics of design –Interaction with MRI machine

23. References “Acrylic Sheet.” Pierce Ohio Companies. http://secure.cartsvr.net/catalogs/catalog.asp?prodid=1659427. Retrieved on December 4, 2003. “Acrylic Sheet.” Pierce Ohio Companies. http://secure.cartsvr.net/catalogs/catalog.asp?prodid=1659427. Retrieved on December 4, 2003. “Acrylic Tube 1/8” Wall, Clear-Cast.” Pierce Ohio Companies. http://secure.cartsvr.net/catalogs/catalog.asp?prodid=1383047&showprevnext=1. Retrieved on December 4, 2003. “Acrylic Tube 1/8” Wall, Clear-Cast.” Pierce Ohio Companies. http://secure.cartsvr.net/catalogs/catalog.asp?prodid=1383047&showprevnext=1. Retrieved on December 4, 2003. Booz, Allen. Vulcan Springs. http://www.vulcanspring.com/html/stock.html. Retrieved on November 10, 2003. Booz, Allen. Vulcan Springs. http://www.vulcanspring.com/html/stock.html. Retrieved on November 10, 2003. “Constant Force Springs.” Emmott Springs. http://www.emmottsprings.co.uk/html/body_force.html. Retrieved on October 24, 2003. “Constant Force Springs.” Emmott Springs. http://www.emmottsprings.co.uk/html/body_force.html. Retrieved on October 24, 2003. “Constant Force Springs.” Global Spec. http://www.globalspec.com. Retrieved on November 8, 2003. “Constant Force Springs.” Global Spec. http://www.globalspec.com. Retrieved on November 8, 2003. “Constant Force Springs.” Trakar. http://www.trakar.com/tr_constant.htm. Retrieved on October 23, 2003. “Constant Force Springs.” Trakar. http://www.trakar.com/tr_constant.htm. Retrieved on October 23, 2003. Corden, Timothy E. Personal interview. September 15, 2003. Corden, Timothy E. Personal interview. September 15, 2003. Corden, Timothy E. Personal interview. October 22, 2003. Corden, Timothy E. Personal interview. October 22, 2003. "Information for Patients About Intravenous Lines." (1995). AIDSLINE National Library or Medicine. http://www.aegis.com/pubs/aidsline/1995/may/M9551036.html. Retrieved on September 15, 2003. "Information for Patients About Intravenous Lines." (1995). AIDSLINE National Library or Medicine. http://www.aegis.com/pubs/aidsline/1995/may/M9551036.html. Retrieved on September 15, 2003. "Intravenous (IV) Infusion Pump." (2002). ICU-USA. http://www.icu- usa.com/tour/equipmentlist.asp?Name=Intravenous+(IV)+Infusion+Pump. Retrieved on September 15, 2003. "Intravenous (IV) Infusion Pump." (2002). ICU-USA. http://www.icu- usa.com/tour/equipmentlist.asp?Name=Intravenous+(IV)+Infusion+Pump. Retrieved on September 15, 2003. “Springs.” Global Spec. http://www.globalspec.com. Retrieved on November 8, 2003. “Springs.” Global Spec. http://www.globalspec.com. Retrieved on November 8, 2003. "Starting Intra venous Lines." (n.d.). http://www.mrprotocols.com/sset/iv.html. Retrieved on September 15, 2003. "Starting Intra venous Lines." (n.d.). http://www.mrprotocols.com/sset/iv.html. Retrieved on September 15, 2003. "Syringe Infusion Pump." Electronic Engineering Corporation. http://eecindia.tripod.com/sipPF.htm. Retrieved on September 15, 2003. "Syringe Infusion Pump." Electronic Engineering Corporation. http://eecindia.tripod.com/sipPF.htm. Retrieved on September 15, 2003. United States Patent and Trademark Office. http://www.uspto.gov/ Retrieved on September 17th, 2003. United States Patent and Trademark Office. http://www.uspto.gov/ Retrieved on September 17th, 2003.