Product Description; Intended Use - Otto Bock 3R21 Instructions For Use Manual

1.1 Explanation of warning symbols
Warning regarding possible risks of accident or
CAUTION
injury.
Warning regarding possible technical damage.
NOTICE

2 Product description

The product (3R21, 3R30) has the following key features:
• Polycentric prosthetic knee joint
• Product components for stance phase stability
- Polycentric kinematics
• Product components for swing phase control:
- Extension assist (adjustable spring force, can be reduced by
spring replacement)
- Adjustable friction brake as movement resistance for exten­
sion and flexion
• Material: Steel (3R21), Titanium (3R30)

3 Intended use

3.1 Indications for use
The product is intended exclusively for lower limb exoprosthetic fit­
tings.
3.2 Area of application
CAUTION
Excessive strain on the product
Fall due to breakage of load-bearing components
► Only use the product according to its allowable field of applica­
tion.
14
Allowable field of application (3R21, 3R30)
Recommended mobility grade: 1 + 2
Allowable body weight: ≤ 125 kg
MG 1: indoor walker
The patient has the ability or the potential to use the prosthesis for
the purpose of moving or proceeding slowly on level floors. The
amount of time and the distance he/she can walk are seriously lim­
ited due to his/her condition.
MG 2: Restricted outdoor walker
The patient has the ability or the potential to walk slowly with the
prosthesis and to negotiate low environmental obstacles like curbs,
single steps or uneven surfaces. The amount of time and the dis­
tance he/she can walk are seriously limited due to his/her condition.
3.3 Combination possibilities
CAUTION
Failure to observe the manufacturer requirements regarding
combination possibilities
Injuries, malfunctions or product damage due to unallowable com­
bination of prosthesis components
► Based on the instructions for use of all prosthetic components
used, verify that they may be combined with each other and are
approved for the patient's field of application.
► Contact the manufacturer with questions.
INFORMATION
In a prosthesis, all prosthetic components have to meet the patient's
requirements regarding the amputation level, body weight, activity
level, environmental conditions and field of application.
Unallowable combinations
Prosthetic hip joints
Everyday prosthesis
All reference numbers