Tech Natives Event #3: "Mobile, wearable, smart tech" - MICHAEL RUSSOLD

mobile, wearable, smart tech

TechNatives
Vienna, 21st October 2013

TechNatives | Michael Russold | Okt. 2013

1

Who am I?
Michael Friedrich Russold
Nationality

Austrian

Education

Kindergarten
primary school: VS Stadl/Mur
secondary school: Gymnasium Tamsweg
HTL Nachrichtentechnik
Dipl.-Ing. Elektrotechnik TU-Wien
PhD, Human Anatomy & Cell Biology, University Liverpool
PostDoc, Rehabilitation Research Center, University Sydney

Current Job

Otto Bock Heatlhcare Products GmbH

Experience

13+ years


and counting

2

Which technologies popped up
within the last years?
????????????
Smart Textiles:

conductive, functional, shape remebering, sensing

Electronics:

wireless technologies

&
Software:

mobile computing, µC-platforms
cloud applications
touch screens

Materials:

Nanotubes, Motors, Gearing, CAD/CAM
thin-film systems
3D printing

Regulatory:
14791, 60601-1.1 edII(I), 60601-2-10 edII(I), 13485, 62304,
82304, 10993, CE, FDA, C-tick, Canadian registration…


3

(Why) do they matter?
Do they matter in our field????
Medical Device development

1. You don‘t know what you don‘t know
2. Regulatory Red Tape can be avoided by being smart
3. Work with experienced partners with trusted relationships only
4. Documentation, Documentation and more Documentation


4

How does mobile, wearable, smart tech
impact the audience?
hopefully never, in my field
How do you apply the technologies in
your field of business?
Case studies


5

The most famous prosthesis of them all
What the media presents


© Otto Bock HealthCare 6

Control and Mechanics of Prosthetic Devices
Human arm vs. prosthetic device
upper extremity human

Commercial prosthesis

•  Human anatomy

•  Mechanics

– 20+ DOF (incl. hand)
•  perfect control

– maximum 4-6 DOF
•  Control

– life-long learning phase

– sequential control

– proprioception

– pattern recognition with
simultaneous control emerging

– Feedback
– force
– temperature
– humidity

– no proprioception
– no Feedback, although field of
interest in research

– …............


Revolutionizing Prosthetics (DARPA)
Results
Challenge

Outcome

•  Upper extremity

MPL (modular prosthetic limb) John
Hopkins University

– 20+ DOF
– perceived low weight
– intutitive control
– feedback

Homo Orthobionicus II | Michael Russold | 25.06.13


Results
Outcome
Hopkins University
Deka Arm

Homo Orthobionicus II | Michael Russold | 25.06.13


Results
Outcome
Hopkins University
Deka Arm
be bionic (finger movement, 14 grip
patterns)
i Limb (finger movement)
ottobock system



State of the Art Technology
Is there anything missing?
How to control your arm in daily life
•  type of control: sequential/simultaneous
•  # of signals required
•  external factors
•  Functionality?
-  How much is required?



Control
and resulting challenges


© Otto Bock HealthCare

12

Movement and Control
pattern recognition
Below Elbow amputation
•  multiple electrodes on forearm
Above Elbow amputation
•  biceps & triceps available → number of signals (very) limited
•  extra DOF in elbow required
Shoulder exarticulation
•  extra DOF in shoulder required
•  no signals available without surgery → TMR



Pattern recognition II



Pattern recognition III



pattern recognition IV

•  can be done
•  limited by space for electrodes
and
•  number of signals available
•  suffers all drawbacks of surface EMG



Implanted Sensors
IMES (Bion)

UTAH Slant Array

tfLife, FINE, sieve electrodes



Implanted Sensors
IMES (Bion)

UTAH Slant Array

tfLife, FINE,
sieve electrode



Implanted Sensors
IMES

UTAH Slant Array

tfLife, Fine,
sieve electrode



Implanted Sensors

•  International research topic
•  muscle electrodes are proven designs
•  nerve interfaces are difficult to control
•  mechanical stability is difficult to achieve



Implanted Systems
NNP (networked neural prosthesis)
Cleveland FES Center

Ripple Inc.

Myoplant
German research project



Implanted Systems

Ripple Inc.

Myoplant



mobile, wearable, smart tech
Conclusion
•  devices are mobile and wearable
•  they are (very) smart-tech
•  perfect integration difficult
•  control not always easy to achieve
•  regulatory red tape is difficult to handle
•  we do document a lot!



too complicated?!
keywords: Arduino prosthetic arm & InMoov project



Questions
???????????????
www.ottobock.com

M. Russold


29

Movement & Control
sequential control
Below elbow amputation
function

muscles used

movement

Fingers open and close

Wrist extensors and flexors Open – extensors
Close – flexors

Wrist rotation

Wrist extensors and flexors CW – extensors
CCW – flexors

Change of movement


Co-contraction

30

Tech Natives Event #3: "Mobile, wearable, smart tech" - MICHAEL RUSSOLD

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