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i-Limb Wrist Global Academy
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i-Limb Wrist · for either wrist or hand signals. Hand / wrist control without switching. Pattern recognition based on individual user’s muscle action. Control tailored to user’s

Aug 24, 2020

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Page 1: i-Limb Wrist · for either wrist or hand signals. Hand / wrist control without switching. Pattern recognition based on individual user’s muscle action. Control tailored to user’s

i-Limb Wrist

Global Academy

Page 2: i-Limb Wrist · for either wrist or hand signals. Hand / wrist control without switching. Pattern recognition based on individual user’s muscle action. Control tailored to user’s

4/24/2020 1

Objectives

After completing this course, you will be able to:

1. Identify i-Limb Wrist technical specifications2. Recognize i-Limb Wrist features and benefits

Page 3: i-Limb Wrist · for either wrist or hand signals. Hand / wrist control without switching. Pattern recognition based on individual user’s muscle action. Control tailored to user’s

4/24/2020 2

Introduction to i-Limb Wrist

• Powered wrist rotator• Controlled via 2 digital electrodes• Simultaneous rotation

- i-Limb Quantum• Direct rotation

- i-Limb Access- i-Limb Ultra- i-Limb Quantum

Page 4: i-Limb Wrist · for either wrist or hand signals. Hand / wrist control without switching. Pattern recognition based on individual user’s muscle action. Control tailored to user’s

4/24/2020 3

User Profile

• Transradial level absence• Two viable control sites• New and existing myoelectric users

Contraindications

• Users unable to use two viable control sites• More proximal level of absence • Long transradial without room for wrist (56 additional mm)

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Technical Specifications

Simultaneous wrist rotation upon grip selection

• Horizontal position

• Grip activation- Gesture- App- Muscle- Proximity

• Wrist rotation to pre-defined optimum position- Direct wrist rotation / manual wrist rotation

to adjust if needed

Grip Wrist rotationPinch 45o

Tripod 45o

Thumb park quick Palm facing inwardsLateral Palm facing inwardsIndex point Palm facing downwardsOpen palm Palm facing upwardsHandshake Palm facing inwardsGrasp Palm facing downwardsTrigger grips Palm facing inwardsCylindrical No rotation position setNatural hand No rotation position setMy Grips Fully configurable

Page 6: i-Limb Wrist · for either wrist or hand signals. Hand / wrist control without switching. Pattern recognition based on individual user’s muscle action. Control tailored to user’s

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Technical Specifications

Direct wrist rotation

Page 7: i-Limb Wrist · for either wrist or hand signals. Hand / wrist control without switching. Pattern recognition based on individual user’s muscle action. Control tailored to user’s

4/24/2020 6

Technical Specifications

• Smart Control- Identifies intuitive muscle actions- Rest, close, open, palm down, palm up- Direct control to hand and wrist movements

• Biosim app• Myo-testing to identify optimum position• User activates muscle actions which feel most intuitive• Recording process

- Rest - Open- Close- Palm up- Palm down

• Successful recording applied to wrist and hand

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4/24/2020 7

Technical Specifications

High/Low

• High (fast and strong) rising signal operates the wrist• Low (slow and gentle) rising signal operates the hand• Direction depends on electrode

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Technical Specifications

Co-contraction

• High contraction of both muscles• Switch control between hand and wrist• Open / close and palm up / palm down alternated

Page 10: i-Limb Wrist · for either wrist or hand signals. Hand / wrist control without switching. Pattern recognition based on individual user’s muscle action. Control tailored to user’s

4/24/2020 9

Technical Specifications

System components

1. i-Limb (Quantum) hand2. i-Limb Wrist 3. Digital electrode unit4. Compact electrode contacts5. Expansion ring6. Magnetic charge port7. Battery

1

2

3

5

4

76

Page 11: i-Limb Wrist · for either wrist or hand signals. Hand / wrist control without switching. Pattern recognition based on individual user’s muscle action. Control tailored to user’s

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Technical Specifications

• Length: 56mm• Weight: 160g• Expansion ring fit within outer socket/frame

- Torque: 0,8Nm• Proximal connection ports

- Electrode- Battery

Page 12: i-Limb Wrist · for either wrist or hand signals. Hand / wrist control without switching. Pattern recognition based on individual user’s muscle action. Control tailored to user’s

4/24/2020 11

Technical Specifications

Digital electrodes

• To control both wrist and hand• Compact or remote design contact points• More information extracted compared to analog electrodes

Page 13: i-Limb Wrist · for either wrist or hand signals. Hand / wrist control without switching. Pattern recognition based on individual user’s muscle action. Control tailored to user’s

4/24/2020 12

Technical Specifications

Magnetic charging port

• Charging battery- Charging in progress red light- Fully charged green light- Charging time: 90 min – 3 hrs

• Switch on/off- Press and hold button

• Battery level status- Bars 20% level- NOTE: emergency reserve to turn on and release from object

Page 14: i-Limb Wrist · for either wrist or hand signals. Hand / wrist control without switching. Pattern recognition based on individual user’s muscle action. Control tailored to user’s

4/24/2020 13

Biosim / My i-Limb

biosim my i-limb

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4/24/2020 14

Training

Staged training approach

Page 16: i-Limb Wrist · for either wrist or hand signals. Hand / wrist control without switching. Pattern recognition based on individual user’s muscle action. Control tailored to user’s

4/24/2020 15

Training – Stage 1

• Focus on hand function open/close without accidental wrist movement- Wrist can be turned off in the app at this stage if needed

• Can still use manual wrist rotation at this stage • Control in multiple planes of motion

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4/24/2020 16

Training – Stage 2

• Changing grips - Gesture- App

• Incorporate simultaneous control with entering grips• Horizontal simultaneous control• Not-horizontal enter grip without wrist rotation

Page 18: i-Limb Wrist · for either wrist or hand signals. Hand / wrist control without switching. Pattern recognition based on individual user’s muscle action. Control tailored to user’s

4/24/2020 17

Training – Stage 3

• Incorporate direct rotational control- Smart control- High/Low- Co-contraction

• Active rotation with objects or pre-positioning outside of grips

• Combine simultaneous and direct rotations control

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4/24/2020 18

Features and Benefits

Technical Features Functional Benefits Benefits for the End User

Simultaneous wrist rotation upon grip selection (i-Limb Quantum)

Avoids need to position hand and wrist components

individually Sound side hand free to use

Faster accommodation to grips

Medical Necessity

Activity

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4/24/2020 19

Features and Benefits

Technical Features Functional Benefits Benefits for the End User

Smart control for direct wrist rotation

High / Low control for direct wrist rotation

Automatic signal recognition for either wrist or hand

signalsHand / wrist control without

switching

Pattern recognition based on individual user’s muscle

action

Control tailored to user’s individual capabilities

Co-contraction for direct wrist rotation

Conventional distinction between wrist or hand

signals

Acquired control strategies can still be used

(no need to re-learn)

Medical Necessity

Activity

Activity

Activity

or

or

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Features and Benefits

Technical Features Functional Benefits Benefits for the End User

Speed boost Configurable rotation speed Rotation speed matching the individual user’s need

Medical Necessity

Activity

biosim

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© ÖSSUR. 4/24/2020