Otto Bock 3R106 Instructions For Use Manual page 14

Attention!
Please avoid exposing prosthetic components to corrosive elements such as fresh wa-
ter, salt water, acids and other liquids. Using this medical product in such environmental
conditions will render all claims against Otto Bock HealthCare null and void.
Please inform your patients.
2.3 Environmental conditions
Allowable environmental conditions
Temperature range for use: -10 °C to +45 °C
Allowable relative humidity 0 % to 96 %, non-condensing
Unallowable environmental conditions
Mechanical vibrations or impacts
Perspiration, urine, fresh water, salt water, acids
Dust, sand, highly hygroscopic particles (e. g. talcum)
2.4 Construction and function (Fig. 2 + 3)
During the initial design of these knee joints the highest priority was given to the large flexion
angle and the new kind of efficient swing phase control. The upper joint section (1) and lower
joint section (2) are connected by the anterior links (3) and the posterior link (4) to form a four-bar
linkage. In extension, the instantaneous center of rotation is located above the joint and behind
the weight bearing line, thus providing knee stability in the stance phase. To control swing phase,
the pneumatic unit is linked to the upper joint section with a connecting rod. The resistances for
flexion and extension are independently and individually adjustable. Reversing action of the exten-
sion assist occurs at approx. 110°. The distal portion of the pneumatic cylinder is fabricated as
a tube clamp and accommodates the provided tube adapter.
Another advantage is the very large knee flexion angle, which goes far beyond the usual range.
The joint does not feature a flexion stop bumper. A flexion angle of more than 170° is technically
possible, and is limited only by the corresponding socket connectors, socket shapes or by the
cosmetic foam cover (Fig. 3).
2.5 Different connection systems
The 3R106 Knee Joint is available in 4 different versions. They differ from each other solely by the
type of proximal connection used (see front page):
Order number
3R106
3R106=KD
3R106=ST
3R106=HD
14 | Ottobock
Version
Knee Joint with pyramid connector
Knee Joint – Version with lamination anchor for knee disarticulation
amputees
Knee Joint – Version with threaded connector for long residual limbs
Knee Joint – Version with pyramid connector anteriorly angled by 10° for hip
disarticulation amputees
3R106, 3R106=KD, 3R106=ST, 3R106=HD