Introduction to i-Limb
The i-Limb is a multi-articulating myoelectric hand
for individuals with upper limb absence at or proximal to the wrist.
The i-Limb replicates the features of a natural hand
Conformable grip:
shapes naturally around objects
Stalling digits:
ability to position individual digits
Thumb rotation:
powered and manual
to achieve a range
of grip positions
Automated grips:
such as pinch and lateral, for precision within tasks
Multiple control options:
for optimal grip access
Personalisation:
create a prosthesis specific to each individuals functional needs
Speed boost:
adjustable speed of digit motion
i-Limb Introduction
User Benefits
The i-Limb hand has a wide range of features designed to benefit the user in their day to day activities.
Conformable digits
The digits shape around the object being held
Provides a secure grip on the object and provides a natural grip appearance
Powered thumb rotation¹
Thumb automatically rotates to the correct alignment for the selected grip
The user does not need to manually position the thumb. Preparation time before gripping is reduced, as is the reliance on a sound hand.
Vari-Grip¹
Increased grip force when required
The appropriate amount of force for the current task can be applied
Automated Grips
A wide selection of grips to choose from where only specific digits are active
The user can select the grips which are most relevant to their lifestyle, allowing increased precision within those tasks
Control Options
Multiple control options available to access automated grips
The user can choose the methods which best suit them, allowing personalisation of the prosthesis to their individual needs
Gesture Control
A method of accessing automated grips through movement of the i-Limb Quantum hand
Enables access to 4 grips via one easy to learn control method
Range of hand sizes
4 hands sizes available
Allows the i-Limb hand to closely match the size of the user
Range of hand connection types
4 types available
The type of connection between the i-Limb hand and the prosthesis can be matched to the user's individual presentation and needs i.e. space available, functionality required, tolerance to weight
Flexion Wrist
Wrist unit allowing flexion and extension movement and ability to lock in position or use unlocked
Offers the ability to change the angle of the i-Limb hand as appropriate for the task
Covering Options
4 covering options available
Users can select the appearance of their i-Limb hand, and change the appearance with different covers
App
Mobile Apps for clinician and users
The user can personalise the i-Limb hand to their needs and has control of certain features
Conformable digits
The digits shape around the object being held
Provides a secure grip on the object and provides a natural grip appearance
Powered thumb rotation¹
Thumb automatically rotates to the correct alignment for the selected grip
The user does not need to manually position the thumb. Preparation time before gripping is reduced, as is the reliance on a sound hand.
Vari-Grip¹
Increased grip force when required
The appropriate amount of force for the current task can be applied
Automated Grips
A wide selection of grips to choose from where only specific digits are active
The user can select the grips which are most relevant to their lifestyle, allowing increased precision within those tasks
Control Options
Multiple control options available to access automated grips
The user can choose the methods which best suit them, allowing personalisation of the prosthesis to their individual needs
Gesture Control
A method of accessing automated grips through movement of the i-Limb Quantum hand
Enables access to 4 grips via one easy to learn control method
Range of hand sizes
4 hands sizes available
Allows the i-Limb hand to closely match the size of the user
Range of hand connection types
4 types available
The type of connection between the i-Limb hand and the prosthesis can be matched to the user's individual presentation and needs i.e. space available, functionality required, tolerance to weight
Flexion Wrist
Wrist unit allowing flexion and extension movement and ability to lock in position or use unlocked
Offers the ability to change the angle of the i-Limb hand as appropriate for the task
Covering Options
4 covering options available
Users can select the appearance of their i-Limb hand, and change the appearance with different covers
App
Mobile Apps for clinician and users
The user can personalise the i-Limb hand to their needs and has control of certain features
¹ On i-Limb Quantum and i-Limb Ultra hands
i-Limb Introduction
User Selection
Suitable Candidates
The i-Limb hand is suitable for individuals with upper limb absence, at or proximal to the wrist.
It is essential for the individual to have viable control sites. Potential control sites should be assessed for suitability during a thorough myo-testing process. Refer to Myo-testing in Resources section, for detailed instructions on how to complete myo-testing and training.
Individuals should be motivated to learn to use the prosthesis and have clear functional goals of how to incorporate it into their day to day activities.
Individuals should have realistic expectations of the effort involved to learn to use a prosthesis.
Achieving optimum performance requires:
- Patience
- Effort
- Time and training
Expectations
At initial assessment, it is essential that the Therapist and Prosthetist educate the user and fully understand their expectations, needs and goals.
To understand user expectations open-ended questions should be asked:
- 'Tell me what you understand of the i-Limb hand?'
- 'How do you think the i-Limb hand will help you?'
- 'What will be your main uses for the prosthesis?’
Failure to address expectations and educate on the benefits and challenges of wearing a prosthesis can lead to difficulties during the fitting and training process.
It is important for the user to understand that the i-Limb hand is not a replacement for a natural hand, but instead a tool to allow functional tasks to be carried out more effectively. Aspects of the prosthesis which should be discussed include; function, weight, appearance, fit, noise, lack of sensation etc.
Having a staged approach to training is important to ensure the user is not overwhelmed when learning to use their prosthesis.
Goal Setting
Setting realistic and manageable goals with the user is important.
Goals must be jointly agreed between the user and the clinicians.
Goals can be short-term and long-term and must be SMART: Specific, Measurable, Achievable, Realistic, Time-based.
Examples include:
- ‘To be able to tie my shoe laces within one week’
- ‘To be able to prepare and cook a meal within one month’
Jointly agreeing goals is the best way to integrate the prosthesis into activities of daily living. It allows the most beneficial grips to be programmed on to the i-Limb hand and supports goal based occupational therapy training.
Occupational Therapy Training
The Occupational Therapist is a key member of the upper limb multi-disciplinary team. They are responsible for maintaining focus on functional goals and supporting the user on the best ways to integrate their prosthesis into their day to day life.
Therapy training is person centric, focusing on personal goals, lifestyle and interests.
Optimum user outcomes are achieved when the Prosthetist and Therapist work closely together with the user.
Studies support the inclusion of Occupational Therapy in upper limb prosthetic fitting.
- Early therapy nearly doubles the rate of daily use. Fletchall, S. “Returning upper-extremity amputees to work”. The O&P Edge. 2005; 4:28-33.
- Research suggests skilled, individualised therapy with the prosthesis takes an average of 20-30 hours. Resnik, L. Meucci, MR, Lieberman-Klinger, S, Fantini, C, Kelty, DL, Disla,R, Sasson, N. “Advanced upper limb prosthetic devices: Implications for upper limb prosthetic rehabilitation.” Arch Phys Med Rehabil. 2012; 93: 710-717.
- A study on the transition from traditional upper limb prosthetics to multi-articulating hands. V. B. MacEachen, F. Davie-Smith, and B. Carse, “Comparison of patient-reported and functional outcomes after transition from traditional upper limb prosthetics to multi-articulating hands in the user with a unilateral trans-radial amputation, ”Prosthetics & Orthotics International, vol. Publish Ahead of Print, Jul. 2022.
i-Limb Introduction
Components
The i-Limb hand is assembled into the prosthesis with a range of components. Many of these components have options to select from to create the optimum prosthesis for the individual user's requirements.
i-Limb hand sizes
Hand Connections
Quick Wrist Disconnect
Hand Connections
Low Profile Options
Wrist Options
Flexion Wrist
Electrodes
Compact Electrodes
Electrodes
Remote Electrodes
Batteries
Chargers
Magnetic Charger Port
Covering
i-Limb Skin Active
Covering
i-Limb Skin Contour
Covering
i-Limb Skin Natural
Covering
i-Limb Skin Match