1. Advisors: Gary Byram, Ph.D.
MedTG Needle Design
Steve Harris
Adam Travis
Brett Byram
Group #15
Advisors: Gary Byram, Ph.D.
Paul King, Ph.D., P.E.

2. Problem
Patient IV injection and blood sampling => multiple needle sticks
Excessive waste, biohazard
Psychological damage, trauma
Time spent acquiring, lab time – for each stick
Many needle sticks, increased infection risk

3. Solution? Combined needle design, multi-lumen
Multifunctional: venous sensors, blood drawing, and injection
Valves & Ports
Multi-lumen catheter
Blood draw lumen
IV administration lumen X
Sensor access orifices

4. Why not just turn off the IV fluid draw blood and turn the IV fluid back on?
Most RNs will not allow an IV to be shut off without direct consent from the doctor
In order to get clean draws with a syringe the blood must be drawn on the opposite side or in a more peripheral location
Using a vacutainer on an IV needle sucks up IV fluid as well as blood.

5. Device Function
Sensor-IV catheter placed into peripheral vein (brachial veins)
Sensor-IV allows IV fluid administration or blood drawing WITHOUT re-sticking a new needle

6. Device Function
Proximal end: micro-valve and pump system allows continual injection while drawing blood
4 lumen:
Lateral sensors allow real-time blood monitoring
Blood draw lumen can also function as IV administration lumen

7. Device Attributes
Disposable after 4-7 days of use (based on existing catheter lifetime)
No added safety concerns in comparison to traditional catheters
Reusable pump unit
Device physical properties are similar to standard needle/catheter
Movement effects are unresearched

8. Patent Search Double lumen catheter for dialysis (6,666,842)
Constant inflow and outflow
Inserted in a peritoneal cavity
Triple lumen catheter (5,195,962)
Lumens for extraction and return
Third lumen may be used for drug delivery

9. Market Size
According to a recent study completed in 2001 the disposable medical device industry is about 48.6 billion dollars a year.
Catheters and other infusion devices make up approximately 39.1% of this market.
Information obtained from a study done by Freedonia

10. Needle Costs The target price for the needle is 20$
The controller would be leased on a monthly basis target lease price would be 40$/month (the controller is reusable).
The estimated manufacture price is 8$ per needle and 150$ per controller

11. Plan of Attack Computational Model: CFD software
Physical Model: testing, rough design

12. Parameters for CFD Model
Venous pressure (1.5 kPa)
IV pressure (to be defined)
Venous inner diameter (2.4 mm)
Catheter inner diameter (1.3 mm)
Research other parameters as needed

13. Initial CFD Work

14. Proposed Schedule
February- Begin computational model and begin to obtain materials for physical model
February – March: refine design parameters, continue testing
April: finish design, prepare presentation

15. Up Coming Work
Refine Computational Model now that we have developed fundamental skills
Obtain information from Dr. D. Quinn regarding specific catheter safety concerns
Possibly make a trip down to Huntsville to visit CFDRC for a product demo
Obtain catheter for physical model