A team of biomedical engineers and a nurse are designing a cerebrospinal fluid collecting device to be used in under-resourced areas. They conducted usability testing including cadaver labs and tissue coring tests. The device features an introducer needle and whitacre needle for precise insertion. Additional testing analyzed fluid flow and device failure modes. Polypropylene was selected as the material due to its cost-effectiveness, durability, and ability to withstand stresses from insertion forces. Next steps include further mechanical validation and refining the needle design and drape accuracy.
The purpose of this project is to design a system for Arbutus Medical that enables a commercially-available power tool to be used as a sterilizable, low-cost surgical saw.
CZY-6S can be used to measure the durable adhesion of pressure-sensitive adhesive tapes, adhesive bandages(plasters), adhesive labels, and protective films, etc.
The purpose of this project is to design a system for Arbutus Medical that enables a commercially-available power tool to be used as a sterilizable, low-cost surgical saw.
CZY-6S can be used to measure the durable adhesion of pressure-sensitive adhesive tapes, adhesive bandages(plasters), adhesive labels, and protective films, etc.
About the paper: Development and application of a new steady-hand manipulator...Giovanni Murru
Development and application of a new steady-hand manipulator for retinal surgery
by
Ben Mitchell, John Koo, Iulian Iordachita, Peter Kazanzides, Ankur Kapoor, James Handa, Gregory Hager, Russell Taylor
presented by
Giovanni Murru
Explore the various applications of snubbers, sway braces and sway struts in piping systems and equipment. Learn how these products help prevent pipe system failure due to seismic loads, flow transients, wind loads, safety valve thrust loads or pipe rupture. Discover the various tests performed within PT&P’s facility to ensure product quality, including cycle testing, travel testing and load testing.
Explore the various applications of snubbers, sway braces and sway struts in piping systems and equipment. Learn how these products help prevent pipe system failure due to seismic loads, flow transients, wind loads, safety valve thrust loads or pipe rupture. Discover the various tests performed within PT&P’s facility to ensure product quality, including cycle testing, travel testing and load testing.
Rheology model 900 viscometer Mud Engineering Exp.Jarjis Mohammed
Rheology model 900 viscometer by jarjis
Experiment Number 7: Rheological Properties using Model 900 Viscometer.
Koya University.
Faculty of Engineering.
Drilling Lab
Supervised By Muhammad Jamal
=============
This a report about Rheological Properties using Model 900 Viscometer.. written by Jarjis Muhammad, Petroleum Engineering Dep. Koya University. For more Information please contact me: www.facebook.com/Jarjis.shaqlawaee
slope stability and seepage by slide software (Teton dam)AbdullahKhan798
Teton dam is being modeled by slide software and other improved models are shown. It is tried to get the correct data for teton dam there may be some errors
For most of the hi-tech/harmonized standards such as IEC60950, IEC61010, and IEC60601, the requirements surrounding Risk of Shock hazard protection encompass more than half the requirements in the standard = both construction and testing requirements. In fact, all mains voltage powered products enclose a Risk of Shock. It is therefore crucial that the design & compliance teams have a high level understanding of what defines a Risk of Shock and Accessibility, and how to design for compliance. This workshop will incorporate both seminar instruction and hands-on demonstration.
Explore the various applications of snubbers, sway braces and sway struts in piping systems and equipment. Learn how these products help prevent pipe system failure due to seismic loads, flow transients, wind loads, safety valve thrust loads or pipe rupture. Discover the various tests performed within PT&P’s facility to ensure product quality, including cycle testing, travel testing and load testing.
In 2014 Todd Wacome delivered this presentation at the Portland Oregon StormCon. The talk focused around stormwater treatment issues and the unveiling of novel approach to stormwater filtration at the catch basin level.
About the paper: Development and application of a new steady-hand manipulator...Giovanni Murru
Development and application of a new steady-hand manipulator for retinal surgery
by
Ben Mitchell, John Koo, Iulian Iordachita, Peter Kazanzides, Ankur Kapoor, James Handa, Gregory Hager, Russell Taylor
presented by
Giovanni Murru
Explore the various applications of snubbers, sway braces and sway struts in piping systems and equipment. Learn how these products help prevent pipe system failure due to seismic loads, flow transients, wind loads, safety valve thrust loads or pipe rupture. Discover the various tests performed within PT&P’s facility to ensure product quality, including cycle testing, travel testing and load testing.
Explore the various applications of snubbers, sway braces and sway struts in piping systems and equipment. Learn how these products help prevent pipe system failure due to seismic loads, flow transients, wind loads, safety valve thrust loads or pipe rupture. Discover the various tests performed within PT&P’s facility to ensure product quality, including cycle testing, travel testing and load testing.
Rheology model 900 viscometer Mud Engineering Exp.Jarjis Mohammed
Rheology model 900 viscometer by jarjis
Experiment Number 7: Rheological Properties using Model 900 Viscometer.
Koya University.
Faculty of Engineering.
Drilling Lab
Supervised By Muhammad Jamal
=============
This a report about Rheological Properties using Model 900 Viscometer.. written by Jarjis Muhammad, Petroleum Engineering Dep. Koya University. For more Information please contact me: www.facebook.com/Jarjis.shaqlawaee
slope stability and seepage by slide software (Teton dam)AbdullahKhan798
Teton dam is being modeled by slide software and other improved models are shown. It is tried to get the correct data for teton dam there may be some errors
For most of the hi-tech/harmonized standards such as IEC60950, IEC61010, and IEC60601, the requirements surrounding Risk of Shock hazard protection encompass more than half the requirements in the standard = both construction and testing requirements. In fact, all mains voltage powered products enclose a Risk of Shock. It is therefore crucial that the design & compliance teams have a high level understanding of what defines a Risk of Shock and Accessibility, and how to design for compliance. This workshop will incorporate both seminar instruction and hands-on demonstration.
Explore the various applications of snubbers, sway braces and sway struts in piping systems and equipment. Learn how these products help prevent pipe system failure due to seismic loads, flow transients, wind loads, safety valve thrust loads or pipe rupture. Discover the various tests performed within PT&P’s facility to ensure product quality, including cycle testing, travel testing and load testing.
In 2014 Todd Wacome delivered this presentation at the Portland Oregon StormCon. The talk focused around stormwater treatment issues and the unveiling of novel approach to stormwater filtration at the catch basin level.
1. William H. Wilson IV Biomedical Engineering
Emily Heeb Biomedical Engineering
William Bowlus Biomedical Engineering
Andy Jetter Biomedical Engineering
Stephen Nelson Industrial Design
Crystal Barron Nursing
2. Design a cerebrospinal fluid collecting device to be
used in under resourced environments by personnel
with minimal training
Current difficulties of procedure:
◦ Finding insertion location
◦ Determining insertion depth
27. Cadaver Lab
◦ Test overall usability of device
◦ Cadaver tissue too rigid for assessment
of functionality
Tissue Coring Test
◦ Investigated if a whitacre (bullet tip)
needle will core tissue as it is advanced
into the spinal column
◦ Tests performed on porcine tissue
◦ The whitacre needle did not core tissue
while being advanced
28. Assess fluid flow through various
needles
◦ Determine time to visual
CSF flow.
Results
◦ 18 Gage Quinke - 1 mL / 14 sec
◦ 22 Gage Quinke - 1 mL / 2.0 minutes
◦ 25 Gage Whitacre - 1 mL / 7.9
minutes
◦ CSF fluid in flash chamber - < 1 sec
29. To assess the drape’s ability to
properly locate the L4-L5 vertebral
space
Study performed by untrained users
◦ Nursing and Biomedical Engineering
Students
Results – Round 1
◦ First Generation Drape
Average X deviation 1.10 cm
Average Y deviation 4.84 cm
◦ Drape did not meet horizontal or vertical
accuracy specification
30. Results – Round 2
◦ Second Generation Drape
Average X deviation 0.80 cm
Average Y deviation 1.42 cm
◦ Better accuracy when applied to
patient lying down
◦ Drape met horizontal accuracy
specification
More work needed on vertical accuracy
31. Application Failure Modes and Effects Analysis
(aFMEA)
High Risk of Bumping the System while inserted in
patient
Possible design control: Adhesive securing disc
Sufficient thread lubrication is imperative
Likelihood of user impatience while unscrewing the dial
Possible design control: Quick release feature
Likelihood of sterility compromise
Possible design control: Training supplement, significant
emphasis in IFU
33. Flange Bending Break
◦ Utilized simple model to replicate a worse scenario
◦ Stress ≈ 700 psi
Threaded Shaft Bending Break
◦ Force applied at tip of shaft = 4 lbf
◦ Stress ≈ 2,700 psi
Threaded Shaft Torsion Break
◦ For Torque = 15 lbf in
◦ Shear Stress ≈ 2,250 psi
Material Yield Stress ≥ 3,000 psi
34. Material Yield Stress ≥ 3,000 psi
Minimized cost
◦ High importance for device success in target demographic
Injection Molding compatible
Durable
35. Two types of polypropylene are top choices
◦ Polypropylene (50% Glass Fiber Filler)
Better Mechanical Properties
More Expensive
Opaque
◦ Polypropylene (Copolymer, UV Stabilized)
Translucent
Cheaper
Acceptable Mechanical Properties
36. Polypropylene (copolymer, UV stabilized)
◦ Yield strength ≈ 3,670 psi
◦ Bulk cost ≈ $1.00/lb
◦ UV Radiation Durability: Good
Next Steps
◦ Additional tests to verify mechanical stability
◦ Investigate costs involved with manufacturing
processing
Injection Molds, etc.
◦ Sterilization investigation
37. Finalization of needle design
◦ Investigating Additional features
Quick Release of threads
Relative rotation for knob
Securing disc to skin
Revision of drape
◦ Still need to meet vertical accuracy requirement
◦ Refinement of application procedure
◦ Layout of alignment features
38. Verification and Validation
◦ Clinical Efficacy
Porcine model
Clinical trials
◦ Production Trials
Testing on manufactured prototypes
◦ Durability testing: aging, drop testing, etc.
Editor's Notes
5 MONTHS AGO WE WERE GIVEN THE FOLLOWING PROBLEM:
COULD THIS BE MOVED BEFORE THE MONEY SHOT AS AN INTRODUCTORY TO CONCLUSION?
GET NEW PICTURE WITH WHITACRE NEEDLE INCLUDED IN RENDER.PLEASE FIX.
GET NEW PICTURE WITH WHITACRE NEEDLE INCLUDED IN RENDER.PLEASE FIX.
GET NEW PICTURE WITH WHITACRE NEEDLE INCLUDED IN RENDER.PLEASE FIX.
GET NEW PICTURE WITH WHITACRE NEEDLE INCLUDED IN RENDER.PLEASE FIX.
GET NEW PICTURE WITH WHITACRE NEEDLE INCLUDED IN RENDER.PLEASE FIX.
GET NEW PICTURE WITH WHITACRE NEEDLE INCLUDED IN RENDER.PLEASE FIX.
GET NEW PICTURE WITH WHITACRE NEEDLE INCLUDED IN RENDER.PLEASE FIX.
GET NEW PICTURE WITH WHITACRE NEEDLE INCLUDED IN RENDER.PLEASE FIX.
GET NEW PICTURE WITH WHITACRE NEEDLE INCLUDED IN RENDER.PLEASE FIX.
GET NEW PICTURE WITH WHITACRE NEEDLE INCLUDED IN RENDER.PLEASE FIX.
Describe the procedure
GET NEW PICTURE WITH WHITACRE NEEDLE INCLUDED IN RENDER.PLEASE FIX.
Describe the procedure
Briefly describe the purpose of each and what was learned
NEEDS MORE DETAIL!!!!!
WILL.MUST USE SEXY VOICE AND UNBUTTON SHIRT AS YOU ANNUNCIATE.