LegWorks ATK HydraPro User manual

ATK HydraPro™
INSTRUCTIONS FOR USE

English ATK HydraPro | Instructions for Use
© Copyright LegWorks 2019 HYD-IFU-02
2
TABLE OF CONTENTS
PRODUCT DIAGRAMS..................................................................................4
DESCRIPTION AND PURPOSE.....................................................................5
PRODUCT SPECIFICATIONS.........................................................................7
ATK HydraPro
ATK HydraPro with Stance Flexion
OUR TECHNOLOGY.....................................................................................9
SAFETY.........................................................................................................10
User Instructions
SETUP and OPERATION.............................................................................11
Connections
Bumper Selection Guidelines
Bumper Adjustment Instructions
Sagittal Plane Alignment
AutoLock Mechanism
Flexion Stop
Friction Mechanism
Friction Mechanism Removal
Friction Mechanism Installation
Adjustable Extension Assist
Cover
Manual Lock
MAINTENANCE............................................................................................21
User
Prosthetist
WARRANTY..................................................................................................22
Exclusions
Liability
Disposal
ORDERING AND CONTACT INFO.............................................................24

English ATK HydraPro | Instructions for Use
© Copyright LegWorks 2019 HYD-IFU-02
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FIGURES
1. ATK HydraPro Anterior Overview...........................................................4
2. ATK HydraPro Posterior Overview.........................................................4
3. ATK HydraPro Build Height Diagram.....................................................7
4. HYD-PA-02 Technical Specications......................................................7
5. ATK HydraPro w/Stance Flexion Build Height Diagram..........................8
6. HYD-SF-02 Technical Specications.......................................................8
7. Stance Phase Function............................................................................9
8. Adjustable Stance Flexion Adaptor Assembly....................................11
9. Proximal Connection.............................................................................12
10. Sagittal Plane Alignment.....................................................................13
11. Lock Spring Set Screw.........................................................................13
12. Absence of Flexion Stop.....................................................................14
13. Malpositioned Flexion Stop...............................................................14
14. Appropriate Flexion Stop...................................................................14
15. Friction Mechanism.............................................................................15
16. Friction Mechanism Cap and Disc Springs.......................................15
17. Friction Mechanism Removal.............................................................16
18. Friction Mechanism Installation.........................................................17
19. Adjustable Extension Assist................................................................18
20. ATK HydraPro Cover Removal............................................................19
21. ATK HydraPro AutoLock Release.......................................................19
22. Manual Lock.........................................................................................20

English ATK HydraPro | Instructions for Use
© Copyright LegWorks 2019 HYD-IFU-02
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PRODUCT DIAGRAMS
Fig. 1 ATK HydraPro Anterior Overview
Fig. 2 ATK HydraPro Posterior Overview

English ATK HydraPro | Instructions for Use
© Copyright LegWorks 2019 HYD-IFU-02
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DESCRIPTION & PURPOSE
The primary components and adjustments are identical across all knee
versions. Specic dierences in components, features and adjustments are
indicated within the document by notation of the relevant product code.
INTENDED USE:
• These instructions are for use by the prosthetist tting and/or
maintaining the device.
• Both device models are intended for single person use.
• Both device models are to be used exclusively as part of an external
lower-limb prosthesis.
• Both device models are developed for everyday use and must not be
used for unusual activities, such as extreme sports.
• HYD-PA-02 is designed exclusively for Knee Disarticulation or
Transfemoral amputees.
• HYD-SF-02 is designed exclusively for Transfemoral amputees.
Ensure that both the prosthetist and the user have read and understood
the Instructions for Use, especially the safety information. If the user experiences
any issues with the device, they should immediately contact their prosthetist.
If the prosthetist experiences any issues, immediately contact LegWorks.
Last updated: 2019-08-01
• Please read this document carefully.
• The safety instructions are to be followed by both the prosthetist and
the user.
PRODUCT CODES
This instructional manual covers all current versions of the ATK HydraPro:
Product Name Product Code
ATK HydraPro HYD-PA-02
ATK HydraPro with Stance Flexion HYD-SF-02

English ATK HydraPro | Instructions for Use
© Copyright LegWorks 2019 HYD-IFU-02
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SCOPE OF DELIVERY
• ATK HydraPro Device
• ATK HydraPro Device Cover
• Instructions for Use (IFU) manual
• Quick Reference Card (QRC)
• ATK HydraPro User Guide
• Extension Assist Springs:
• medium stiness (pre-installed)
• strong stiness
• weak stiness
• HYD-SF-02 only: Posterior Stance Flexion Bumpers: Firm, Medium
(pre-installed), and Soft stiness
FUNCTION
• Stance Phase Control: AutoLock Technology
• Swing Phase Control: Adjustable variable friction resistance (Variable
Cadence Controller) and spring extension assist
• Design:
• HYD-PA-02 and HYD-SF-02: Waterproof and corrosion resistant in
both freshwater and saltwater (e.g. shower, pool, ocean)
• Activity Level: Suitable for K3 and K4 activity levels
INDICATIONS
• Transfemoral (both device models), Knee Disarticulation (HYD-PA-02
model only)
• K3-K4 mobility level (primary prosthesis)
• Secondary prosthesis (bathing or water leg)
WEIGHT LIMIT
• HYD-PA-02 and HYD-SF-02 have been tested and passed to the 150kg
(330 lb) P8 ISO 10328:2006 standard
DESCRIPTION & PURPOSE

English ATK HydraPro | Instructions for Use
© Copyright LegWorks 2019 HYD-IFU-02
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Product ATK HydraPro
Part # HYD-PA-02
Amputation Level Transfemoral, Knee Disarticulation
Activity Level K3-K4
Material Advanced Fiber-Reinforced Composite, Stainless
Steel, Titanium
Maximum Body Weight 150kg (330 lb)
Total Fitted Height (1) 186mm (7 5/16 in)
Eective Fitted Height (2) 125mm (4 15/16 in)
Fitted Height (3) 24mm (15/16 in)
Tube Clamp Depth (4) 45mm (1 3/4in)
Attachment Point to First
Axis Oset 9mm Posterior Oset
Product Weight 1,052g (2.32 lb)
Ground Clearance 11mm (7/16 in)
Proximal Connection Pyramid Adaptor
Swing Phase Control Hydraulic Variable Cadence Controller
Stance Phase Control AutoLock Technology (Patented)
Axes Four Axes
Flexion Angle (minus socket) 150 degrees
Distal Connection 30mm Tube Clamp
Fig. 3 ATK HydraPro HYD-PA-02 Build Height Diagram
Fig. 4 ATK HydraPro Premium HYD-PA-02 Technical Specications

English ATK HydraPro | Instructions for Use
© Copyright LegWorks 2019 HYD-IFU-02
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Product ATK HydraPro with Stance Flexion
Part # HYD-SF-02
Amputation Level Transfemoral
Activity Level K3-K4
Material Advanced Fiber-Reinforced Composite, Stainless
Steel, Titanium
Maximum Body Weight 150kg (330 lb)
Total Fitted Height (1) 201mm (7 15/16 in)
Eective Fitted Height (2) 141mm (5 9/16 in)
Fitted Height (3) 40mm (1 9/16 in)
Tube Clamp Depth (4) 45mm (1 3/4in)
Attachment Point to First
Axis Oset 19mm Posterior Oset
Product Weight 1,242g (2.74 lb)
Ground Clearance 11mm (7/16 in)
Proximal Connection Pyramid Adaptor
Swing Phase Control Hydraulic Variable Cadence Controller
Stance Phase Control AutoLock Technology (Patented)
Axes Four Axes
Flexion Angle (minus socket) 150 Degrees
Distal Connection 30mm Tube Clamp
Fig. 5 ATK HydraPro HYD-SF-02 Build Height Diagram
Fig. 6 ATK HydraPro HYD-SF-02 Technical Specications

English ATK HydraPro | Instructions for Use
© Copyright LegWorks 2019 HYD-IFU-02
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The ATK HydraPro is suitable for users in mobility classes 3-4. Adjustments
can be made to the Hydraulic VCC to control heel rise and terminal impact
levels, resulting in smooth and responsive swing dynamics at dierent walking
speeds. The AutoLock Mechanism ensures optimal stability when negotiating
uneven terrain. Simple conversion to manual lock mode is also possible for
situational use.
OUR TECHNOLOGY
The ATK HydraPro utilizes a proprietary stance-phase control mechanism
(AutoLock Technology) and swing-phase control mechanism (Hydraulic Variable
Cadence Controller or Hydraulic VCC). The mechanisms comprise a 4-linkage
(4-bar) kinematic chain. The AutoLock Technology is based on a knee lock
that is automatically engaged in late-swing-phase for extra safety. The knee
remains securely locked until mid-to-late stance-phase when it is disengaged
for an eortless swing-phase initiation.
The Hydraulic VCC utilizes a combination of hydraulic damping, a variable
friction system, and an optimized extension assist spring for ecient gait at
multiple walking speeds. The 4-bar kinematic arrangement of the ATK HydraPro
mechanism results in swing-phase foot clearance comparable to 4 and 6 bar
polycentric knee mechanisms.
Fig. 7 Stance Phase Function

English ATK HydraPro | Instructions for Use
© Copyright LegWorks 2019 HYD-IFU-02
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Both device models of the ATK HydraPro should only be t by a qualied
professional.
In the nal stage of quality control, all ATK HydraPro units undergo functional
testing to ensure optimal performance standards are met. As a result, the
product may ship with visible indentation marks on the pyramid.
If there are any visible changes, wear and tear, or functional limitations, replace
the part, or contact the manufacturer for a replacement part or servicing request.
Please make sure the user is competent in handling of their prosthesis before
leaving the premises. Failure to observe this warning may cause the user to fall.
Please be aware of nger traps in the knee joint at all times.
The user should immediately report any changes, i.e. excessive movement in
the knee during stance-phase, inconsistent locking, etc. to their prosthetist.
Always use a handrail when descending stairs and on downward slopes if
available.
Any excessive changes in heel height may adversely aect the stability of the
knee. Care should be taken while carrying heavy loads.
USER INSTRUCTIONS
Do not adjust your knee or change your alignment. Alert your prosthetist
immediately to any suspicious sounds from the knee (clicking, crackling, etc.).
Inspect your prosthesis often, clean with a towel. Do not tamper with any
screws on the knee.
Observe all the above points, otherwise the warranty becomes null and void.
SAFETY