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3R60-PRO - Knee prosthetics

EBSpro knee joint, polycentric, with hydraulic swing phase control


How does the EBSpro work? The mechanical principle of the EBSpro is based on the proven 3R60 prosthetic joint. The polycentric prosthetic joint has five axes that are arranged to form a ring. The anterior axis chain is designed like a conventional four-axis joint, but the posterior linkage bar is interrupted by an additional pivot point (Fig. 1). The proven design thus allows for two different modes of operation: swing phase mode and stance phase flexion mode. Two specially configured miniature hydraulic units (Fig. 2, A+B) control the two modes. Outstanding performance during the stance phase is the key feature of the 3R60. The spring and hydraulics combination in stance phase flexion mode is individually adjustable and can be precisely adapted to suit the requirements of the prosthesis wearer. Thanks to the progressive nature of the EBS resistance – realised with an auto-adaptive EBS unit – the effect can adapt itself over a large range of walking speeds for the first time. The higher the walking speed, the greater the extent to which flexion is limited. The lower the walking speed, the less damping resistance takes effect. This ensures greater stance phase flexion (Fig. 3). In this way, this important function adapts to various everyday situations. For the prosthesis wearer, this means enhanced safety and comfort as well as a highly natural gait pattern.
How does the EBSpro work? The mechanical principle of the EBSpro is based on the proven 3R60 prosthetic joint. The polycentric prosthetic joint has five axes that are arranged to form a ring. The anterior axis chain is designed like a conventional four-axis joint, but the posterior linkage bar is interrupted by an additional pivot point (Fig. 1). The proven design thus allows for two different modes of operation: swing phase mode and stance phase flexion mode. Two specially configured miniature hydraulic units (Fig. 2, A+B) control the two modes. Outstanding performance during the stance phase is the key feature of the 3R60. The spring and hydraulics combination in stance phase flexion mode is individually adjustable and can be precisely adapted to suit the requirements of the prosthesis wearer. Thanks to the progressive nature of the EBS resistance – realised with an auto-adaptive EBS unit – the effect can adapt itself over a large range of walking speeds for the first time. The higher the walking speed, the greater the extent to which flexion is limited. The lower the walking speed, the less damping resistance takes effect. This ensures greater stance phase flexion (Fig. 3). In this way, this important function adapts to various everyday situations. For the prosthesis wearer, this means enhanced safety and comfort as well as a highly natural gait pattern.
Product typeMechanic polycentric
Mobility grade2, 3
Max. body weight75 kg
All specifications
Specifications

Product information

Product typeMechanic polycentric
Mobility grade2, 3
Max. body weight75 kg
Amputation levelTransfemoral amputation
MaterialAluminium

Product Data

Article number3R60-PRO3R60-PRO=HD3R60-PRO=KD3R60-PRO=ST
Max. body weight75 kg75 kg75 kg75 kg
Mobility grade2, 32, 32, 32, 3
Weight770 g770 g840 g750 g
Proximal connection

Pyramid (movable)

Pyramid (10° inclined)

Lamination anchor

Threaded connector

Distal connection

Pyramid

Pyramid

Pyramid

Pyramid

Knee flexion angle175 °175 °145 °125 °
System height150 mm150 mm169 mm165 mm
Proximal system height to alignment reference point2 mm2 mm21 mm17 mm
Distal system height to alignment reference point148 mm148 mm148 mm148 mm
Build height186 mm186 mm187 mm183 mm
Proximal build height to alignment reference point20 mm20 mm21 mm17 mm
Distal build height to alignment reference point166 mm166 mm166 mm166 mm
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Thanks to easy initiation of the swing phase, the 3R60 knee joint allows you to walk at various speeds – whether you are going for a hike or strolling through a market. You benefit from a larger ground clearance during swing-through of the joint, reducing your risk of stumbling. The special joint design also gives you more stability in the stance phase and prevents unwanted flexion of the joint. The 3R60 also makes it possible for you to walk down gentle slopes.
Thanks to easy initiation of the swing phase, the 3R60 knee joint allows you to walk at various speeds – whether you are going for a hike or strolling through a market. You benefit from a larger ground clearance during swing-through of the joint, reducing your risk of stumbling. The special joint design also gives you more stability in the stance phase and prevents unwanted flexion of the joint. The 3R60 also makes it possible for you to walk down gentle slopes.