IV Tubing Organizer Blake Hondl, Amit Mehta, Ryan Pope, Kristen Sipsma, April Zehm, Katie Zenker BME 200/300 October 10, 2003

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

Overview Problem Statement Problem Statement Background Background Design Constraints Design Constraints Design Alternatives Design Alternatives Proposed Design Proposed Design Potential Problems Potential Problems Questions Questions

Problem Statement The goal of this project is to create an IV tubing organizer to prevent entanglement of several IV lines, while maintaining the functionality of an IV tube. The goal of this project is to create an IV tubing organizer to prevent entanglement of several IV lines, while maintaining the functionality of an IV tube.

Background Information Pediatric Patients Pediatric Patients –Critical Care –Multiple IV lines –Confusion and entanglement of lines –Stationary vs. Transport –Places Patient at Risk

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 reloadable Disposable, but reloadable Need not be sterile Need not be sterile Non-magnetic materials Non-magnetic materials User friendly User friendly Ideal: two-sided length adjustment Ideal: two-sided length adjustment

Design Alternatives Spool Design Spool Design Dual Gears with Crank Design Dual Gears with Crank Design Reel with Crank Design Reel with Crank Design

Design #1: Spool Design No mechanical device No mechanical device IV tubing wound around a cylindrical rod IV tubing wound around a cylindrical rod Held in place by restricting bar Held in place by restricting bar Give-and-take relationship Give-and-take relationship Inefficient Inefficient

Design #2: Dual Gears with Crank Two large toothed gears in contact another Two large toothed gears in contact another Powered by manual crank Powered by manual crank Temporary storage compartment Temporary storage compartment Mechanism of physically guiding the tubing Mechanism of physically guiding the tubing Lack of organization Lack of organization

Design #3: Reel with Crank Similar to garden hose reel Similar to garden hose reel IV tubing reeled around grooves in the disk IV tubing reeled around grooves in the disk One end is fixed and other is mobile One end is fixed and other is mobile

Chosen Design Advantages Total control over amount of IV line necessary Total control over amount of IV line necessary Reduced patient injury Reduced patient injury –Fixed end directed toward patient Adjustable end towards syringe pump Adjustable end towards syringe pump –Moves with patient transport –Minimize clutter

Device Placement Bed side Bed side –Clamped to railings –Efficient for transport

Potential Problems Clamp has to be non-magnetic Clamp has to be non-magnetic –Interference with MRI Fixed end Fixed end –Long enough to anticipate patient movement Only addresses a single line Only addresses a single line –Multiple devices needed for multiple lines

Design Possibilities Auto-Retractable Hose Reel Auto-Retractable Hose Reel Auto-Retractable Line Holder Auto-Retractable Line Holder Manual-Retractable Line Holder Manual-Retractable Line Holder

Auto-Retractable Hose Reel Good Points Good Points –Tube well contained –Exposed length controlled Bad Points Bad Points –Special Fittings –Difficult Tube Change –Uncontrolled Recoil

Exploded Hose Reel

Auto-Retractable Channel Holder Similar to an Arrow Quiver Similar to an Arrow Quiver Foam Rubber Holders Foam Rubber Holders Hard Plastic Shell Hard Plastic Shell

Good Points Good Points –Easy Tube Change –Multiple Tubes –Labeling system Bad Points Bad Points –Tube Less Contained –Metal in Retractable Reel Auto-Retractable Line Holder

Manual-Retractable Line Holder Good Points Good Points –Easy Tube Change –Multiple Tubes –Labeling system –Special Fishing Reel Features Bad Points Bad Points –Tube Less Contained

Proposed Solution Manually Retractable Line Holder Manually Retractable Line Holder –Quick to prototype –Cheap, by using existing technologies –Fulfills Special Requirements of Client  Easy Tube Changes  Tube Labeling System

Design Options Coiled Container Coiled Container Spring Loaded Tubing Retractor Spring Loaded Tubing Retractor Spindle With Hand Crank Spindle With Hand Crank

Design 1: Coiled Container Remove cover, wind tubing around central core, replace cover Remove cover, wind tubing around central core, replace cover Lengths variable on both sides Lengths variable on both sides Simple to use Simple to use Time consuming to operate Time consuming to operate to patientfrom pump core SIDE VIEW Cover Base TOP VIEW

Design 2: Spring Loaded Tubing Retractor Cover is removed, tubing is attached to spring Cover is removed, tubing is attached to spring Automatic retraction Automatic retraction Safety lock Safety lock More complicated More complicated Increased tension on tubing Increased tension on tubing lock to patient Connection between tubing and spring spring (underneath the plate) IV tubing channel TOP VIEW—Level #1 from pump TOP VIEW—Level #2 to patient from pump IV tubing channel spring (underneath the plate) lock Connection between tubing and spring plate

Design 3: Spindle With Hand Crank Tubing slides through notch to core Tubing slides through notch to core Hand crank winds tubing to desired length Hand crank winds tubing to desired length Hand crank is folded down Hand crank is folded down Lengths variable on both ends Lengths variable on both ends Easy to operate Easy to operate side piece core notch—tubing goes to patient (on back side) notch—tubing is from pump (on back side) FRONT VIEW hand crank 1” SIDE VIEW core notch—tubing goes to patient (on back side) hand crank 3”

Proposed Solution: Design 3 Safety—no applied tension Safety—no applied tension Efficient—no cover to remove Efficient—no cover to remove Little training required Little training required Mechanically simple Mechanically simple Durable Durable Potential Problems: Potential Problems: –Only organizes one IV tube –Requires plastic molding

Future Work Group meeting with 3 design proposals Group meeting with 3 design proposals Discuss options with client Discuss options with client Choose final design Choose final design Acquire materials and build prototype Acquire materials and build prototype Present prototype to client Present prototype to client

Questions?