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| © Otto Bock HealthCare

Modern Lower Extrimity Prostetics

Janne Isokangas, CPO, Otto Bock Scandinavia Ab


1919 Otto Bock

Almost one hundred years ago the company was founded

by its namesake, Otto Bock, who started to produce

prostheses and orthopaedic aids for wounded soldiers from

World War I. The company is still family-owned and today

managed by his grandson, Professor Hans Georg Näder.

With over 6 000 employees located in 49 markets

worldwide and an annual turnover of 870 million EUR,

Ottobock is a leading company in the orthopaedic industry.

The global headquarters is today located in Duderstadt,

Germany.

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MedicalCare

Wheelchairs & Seating aids

Orthotics

Prosthetics

Ottobock Scandinavia Group What we provide


Quality for life

4/28/2016

| © Otto Bock HealthCare 4/28/2016


MOBIS® The Ottobock Mobility System

Technical Solutions


MOBIS®

The choice of the correct prosthesis components by the prosthetist is a

decisive factor for a successful fitting.

MOBIS is a further development of the Ottobock classification system

introduced in 1994.

It focuses on the person and his/her need for a better Quality of life.

With the help of the MOBIS symbol, the prosthetist can immediately

regognise the mobility grade and patient weight for which functional

components such as prosthetic feet, knee joints and hip joints are

recommended.

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MOBIS®

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MOBIS is based on 4 mobility grades

MOBIS defines 4 weight classes

MOBIS is easy to apply


The Ottobock Mobility System: Mobility Grades and Therapy Goals

MOBIS 1

Indoor walker

• Therapy goal:

Restoring the ability to stand and to walk indoors to a limited degree.

MOBIS 2

Restricted outdoor walker

• Therapy goal:

Restoring the patient's ability to stand and walk

both indoors and outdoors.

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The Ottobock Mobility System: Mobility Grades and Therapy Goals

MOBIS 3

Unrestricted outdoor walker

• Therapy goal:

Restoring the patient's ability to stand and to walk

indoors and outdoors with only mild restrictions.

MOBIS 4

Unrestricted outdoor walker with especially high

requirements

• Therapy goal:

Restoring the ability to stand, walk and move about both

indoors and outdoors without any limitations. 4/28/2016


MOBIS® defines 4 weight classes:

< 75 kg

<100 kg

<125 kg

>150 kg

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MOBIS®– Modular components

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Knee Joints and MOBIS

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Security

Functionality


Feet and MOBIS

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Functionality


Modern Technology

Microprosessor-controlled knee joints

C-Leg 4

Genium

Genium X3

Kenevo

Myoelectric upper limb prosthesis technology

Michelangelo, Myo Bock System

Microprocessor-controlled ankel

Triton Smart Ankle

Meridium


C-Leg 4 / 3C98-3 Microprosessor-controlled knee joint


Introduction

Technology

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Inertial Motion Unit (acceleration

sensors and gyroscope)

Charging plug

Servo electronics

Battery

Hydraulics

Electronics

Bluetooth


Introduction

Technology – New control concept for C-Leg 4

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Detected parameters (sampling rate: 100 Hz)

• Knee angle

+ angular velocities

• Knee extension moment

• Inertial Motion Unit (IMU)

Linear accelerations

+ velocities & distances

Orientation of shank in space

+ angular velocities


Introduction

Functional sequence of prosthetic control

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Knee angle

Knee moment

Linear accelerations

Shank inclination

Angular velocities

Servo motor

Flexion valve

Servo motor

Extension valve

Input signals Processor

C-Leg 4 Output signals


Introduction

Characteristics – Improved swing phase behavior

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The swing phase control regulates

the maximum flexion even at different

speeds with a very high accuracy!

• Adaptive swing phase flexion control

Very good support for slow and fast

walking speeds

Adapts flexion resistances to different

walking speeds

Adapts to changed parameters (e.g.

shoe weight)


Introduction

Characteristics – Improved swing phase behavior

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• Real-time swing phase extension control

Adapts extension resistances to

different situations and walking speeds

Adjustable basic resistance for swing

extension during level walking

Minimal resistance when walking stairs

and ramps (reliable foot positioning)


Introduction

Characteristics – Broader range of ADL’s

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• Intuitive Stance Function If the joint is at rest in a

flexed position, it is

instantaneously locked

E.g. useful for standing

on ramps

Locked

joint in

flexion

Flexion

possible

→ no

stable

standing

Stance Function

activated


Introduction

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• Sitting Function (low flexion and

extension resistance)

• Weatherproof (IP67)

• 2 additional MyModes for specific

activities

Characteristics – Broader range of ADL’s


Introduction

Characteristics – Easier use for patient and CPO

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• Ottobock Cockpit app or optional remote

control

Switch modes

Limited changes to adjustments

Battery level indicator

Status indicator

User friendly dialog texts for service and error

messages

• New posterior position for charging receptacle

Additionally protected by a cover

• Adjustable signals (+ louder beeper)

Cockpit


Introduction

Characteristics – Improved outcomes for patient and CPO

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• Safety

Safe backwards walking

Enhanced stumble recovery

Easier stance release → small steps, sand… (real

time control)

Adjustable safety mode

Exit strategy

• Additional improvements compared to old C-Leg

Higher extension resistances possible for a more

convenient stance extension movement (no

hydraulic shortcut)


Introduction

Characteristics – Broader group of patients

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• MOBIS 2 – 4

• Patients with hip disarticulation or

hemipelvectomy have to be fitted with the

7E7, 7E9 or 7E10 hip joint

• Maximum knee angle: 130°

• Up to 136 kg (300 pounds) of body weight

• Minimal installation height = 307 mm (using

LoRider foot)

Shorter users possible

More functional feet possible


Components and Materials

Data Safety Sheets

Component Testing

5.000.000 steps = 3 years (avarage user) REACH ?

Registration, Evaluation, Authorisation and Restriction of Chemicals 2007 ->

CE Marking

Materials

Cytotoxicity Testing (ISO 10993-5)

Irritation- and sensitization testing (ISO 10993-10)

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Documentation


Future ?

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Osseointegration


Future ?

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(TMR) targeted muscle reinnervation


• Official partner to Paralympics since 25 years

• Partner to the International Paralympic Committee since 2005

• Official supplier of technical services for prosthetics, orthotics and wheelchairs for Paralympics Rio 2016

• During London 2012 2080 repairs were made by 78 technicians (ca 10 680 h work)

• We had 13,7 tons of workshop equipment on set and over 15 000 spare parts


Janne Isokangas CPO, Productspecialist [email protected]


Quality for life

4/28/2016


Janne Isokangas CPO, Productspecialist [email protected]

modern lower extrimity prostetics - etas · modern lower extrimity prostetics janne isokangas, cpo,...

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