Activity Level 3
Impact Level

Orion3 is suitable for K3 users who would benefit from stability on different terrains, slopes and steps and for those wishing to walk naturally and efficiently at either single or varying speeds.

The safety and stability of Orion3 encourages users to evenly distribute their weight, offloading their sound side and lower back to reduce aches and pains commonly reported by amputees.


  • Situational Awareness – an Inertial Measurement Unit senses movement and speed to respond accordingly, in real time
  • Enhanced Stability Performance – 5 levels of stance resistance optimises safety at all times
  • Natural Efficient Motion – MPC pneumatics ensure energy efficient and smooth swing at multiple speeds
  • Cycle Mode
  • Fixed Angle Flexion Lock
  • Knee Flexion to 130°
  • Intuitive Programming Software
  • Lithium Ion batteries with up to 3 days life, dependent on usage
  • Battery Life Indicator
  • Low Power Mode
  • 3-year warranty subject to service at 20-month intervals
  • Weatherproof

Enhanced Stability Performance

Enhanced Stability Performance (ESP) increases the user’s confidence and independence, reducing the risk of stumbles or falls and ensuring more balanced limb loading for greater long term health and protection.

ESP adapts hydraulic resistance in real time, providing optimal stance support whether walking in a crowded environment, on uneven terrain, slopes, steps and now also when standing. With situational awareness, Orion3 continuously monitors the user’s activity and responds accordingly for greater safety.

Orion3 Controlled Stance Support

Controlled Stance Support

Supportive resistance throughout stance phase provides optimal stability for walking with greater safety and less effort on all-terrain.

Orion3 Standing Support

Standing Support

Maximum resistance stabilises knee, on both at and slopes, encouraging better posture and balanced loading to relieve pressure on sound limb and lower back.

Orion3 Stumble Recovery

Stumble Recovery

Stance resistance engages during swing phase extension to ensure knee stability should the user stumble.

Orion3 Stair Descent

Dynamic Slope & Stair Descent

Knee resistance progressively increases with immediate support on the first step and increasing support with further knee flexion for enhanced control and safety when descending stairs or slopes.

Orion3 Supported Sitting

Supported Sitting

Progressive hydraulic resistance ensures greater support and control to sit down with safety and confidence and more balanced loading across both limbs.

Natural Efficient Motion

Knee flexion during swing phase varies according to walking speed. With microprocessor pneumatic swing control, Orion3 controls heel rise across a range of walking speeds for a more natural swing. The pneumatic spring also makes it easier to initiate swing, saving energy with every step and ensuring more natural knee flexion at lower speeds.

Orion3 Optimal Stance Release

Optimal Stance Release

Orion3 releases high resistance just before the knee bends for optimal safety, easy knee flexion and reduced walking effort.

Orion3 Adaptive Speed Control

Adaptive Speed Control

By sensing changes in walking speeds, Orion3 dynamically adapts pneumatic control in real time for a smooth, natural and energy efficient swing.*

Orion3 Terminal Swing Damping

Terminal Swing Damping

Swing phase extension is damped in late swing to soften knee movement and prevent terminal swing impact.

*Studies have shown the reduced physiological cost of walking, with reduction in energy expenditure by up to 20% – please refer to our clinical compendium for further details.

Smart Programming App


Programming Orion3 just got faster and simpler with the new Orion3 Programming App for clinicians available on iOS and Android. With its simple to follow automated smart programming, you can complete limb set up with fewer steps whilst still having access to more advanced fine tuning if required. 

This app is for clinicians who have completed a Blatchford approved training course and requires an authorisation code:

  1. Download the app from the App Store, search for “Orion3”.
    If using an iPad please choose “iPhone Only” when searching.
  2. On first use, send the 8 digit “Authorisation Request Code” to your Blatchford representative.
  3. Enter the 12 digit code provided by your Blatchford representative into the app.
  4. Start programming Orion3!

For support questions please contact Blatchford Technical Support at technical.support@blatchford.co.uk

* Compatible with all models of iPad, iPhone and iPod Touch running iOS v9 or later.


Max. user weight: 125kg (275lbs)
Activity level:  3
Component weight:  1.5kg (3.3lbs)
Build height: 244mm
Control unit:  MPK Hydraulic/Pneumatic

Suitable for outdoor use


Part Number: ORION3


Battery Charger Kit – 950223
Clinician’s Manual – 938974
User Guide – 938375

Orion3 Proximal AdaptersProximal Attachments (ordered separately)

Rotating Pyramid with Shift – 239017
Non-rotating Pyramid with Shift – 239089
Female Pyramid with Shift – 189128
M36 Threaded Adapter with shift – 239092

Patent reg. US5893891 US6517585 US6719806 13/777,327 APP EP1059898 EP1998723

An annual visual inspection is recommended. Check for visual defects that may affect proper function. Maintenance must be carried out by competent personnel.

Blatchford trademarks.

Last updated: 12th July 2021

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