Download 3D Printed Prosthetics

3D Printed Prosthetics
Brett Hager & Becca Thompson
3D Printing Basics
How Does it Work???
Much like a regular printer, but instead of using ink uses layers of plastic (or other material!)
layered on top of each other to create a 3D structure of whatever was designed
Plastics
Food???
Yes!
...Chocolate!
...Pasta and meat!
NOT for prosthetics :-)
Metals
Aluminum
Cobalt
Stainless steel
Gold & Silver
Titanium
Uses in Prosthetics
➢NIH 3D Print Exchange
○ The NIH 3D Print Exchange is a collaborative effort led by the National Institute of Allergy and Infectious Diseases in
collaboration with the Eunice Kennedy Shriver National Institute for Child Health and Human Development and the
National Library of Medicine.
➢Simple prosthetics primarily for upper extremity
➢Fashion and prosthetic 3D-printed covers growing in popularity
➢http://bcove.me/z8mykift
Uses in Orthotics
Capable of producing
•
AFO
•
Insoles
•
Spacers
•
Arch support spacer
•
Various braces
SOLS - company that utilizes 3D printing
and technology in unique ways to
create custom foot orthotics
•
•
•
Align
Relieve
Propel
Who is Impacted??
The Common Patient
*Estim. 15/100,000 babies
with congenital UE
anomalies (+ Trauma!!)
*Kids outgrow prosthetics
*Very Expensive!
3D Printing
may lower costs
and get kids in
prosthetics sooner!
2011: ‘Robohand’ printed by Richard
Van As and Ivan Owen
Utilizes wrist motion & tenodesis effect to
open/close mechanical fingers
Open source project; anyone with 3D printer
can print Robohand parts
Meet Ellie
*13 years old
*Transradial amputee
*Trauma induced
Would 3D
amputation
printed
*Active lifestyle
prosthetic
work for her?
Gretsch Et. Al
➢Worked with a 13 year old
female transradial limb amputee
➢The overall design is a
shoulder-controlled, externally
powered, 3D-printed prosthetic
arm with a voluntary-open,
anthropomorphic terminal
device
➢The estimated weight of the
prosthesis is 240 g with a cost
of US$300.
Gretsch et al Discussion
➢ The patient cited that biggest advantages of the new prosthetic were
○
the individual thumb movement
○
the ability to grasp objects with all five fingers
○
the low weight compared to other externally powered prostheses
➢ The patient’s family also noted the design’s financial feasibility
➢ The device is inexpensive and the size of the hand and socket can be scaled, users can easily print new devices as they
grow older.
➢Limitations
○
short battery life
○
noise from the motors
○
low grip strength of the terminal device
○
low durability of mechanical components
Role for Physical Therapist
❖ Stay up to date on what is
happening in the development of
3D printed prosthetics and
orthotics
❖ If you work with patient with a
3D printed P/O, help them to
move functionally with it
❖ If necessary, refer to another PT
or prosthetist who specializes in
fitting these devices
What about Ellie?? (and others like her?)
❖ Nice interim tool
❖ Useful for reach-grasp
❖ Not useful for heavy weight bearing activities
➢ Not great for sports
❖ Would recommend as a short term device until
she has finished growing and can be fitted with a
more durable prosthetic
❖ 3D printing for prosthetics is still a relatively new
technology
References
Gretsch, K. F., Lather, H. D., Peddada, K. V., Deeken, C. R., Wall, L. B., & Goldfarb, C. A. (2016).
Development of novel 3D-printed robotic prosthetic for transradial amputees. Prosthetics and orthotics
international, 40(3), 400-403.
Printing 3, Printing F, Printing P et al. Medical - Purple Platypus. Purple Platypus. 2016. Available at:
http://www.purpleplatypus.com/resources/industries/medical/. Accessed July 10, 2016.
Replicator M, Z18 M, Mini M et al. 3D Printing Resources and Tools | MakerBot. MakerBot. 2016.
Available at: http://www.makerbot.com/. Accessed July 10, 2016.
Scott C, Millsaps B, Millsaps B, Millsaps B, Matisons M. 3d printed orthotics. 3DPrintcom. 2016. Available
at: https://3dprint.com/tag/3d-printed-orthotics/. Accessed July 9, 2016.
3D Printing Videos | Stratasys. Stratasyscom. 2016. Available at: http://www.stratasys.com/resources/3dprinting-videos?bcpid=1594609720001&bckey=AQ~~,AAABZHZNdKk~,FM7H3b6my7ZRXiWW3RTJIj4T2dr1Gmp&bctid=1838625224001. Accessed July 10, 2016.
Questions????