Page 13 - ENT IMPLANTS CATALOGUE IMPLANTS ORL

IMPLANT MATERIALS AND

PROCESSING

UTMOST CARE AND HIGHEST PRECISION TITANIUM
In order to achieve best possible results, the elegant design of the KURZ uses only high-quality (ASTM F67, medical grade), pure ti-
KURZ prostheses often probes the limits of feasibility. The manufac- tanium for its prostheses. The properties of this material grade are
turing process of these prostheses requires highest precision and ut- ideally suited due to its rigidity, weight and technical manufacturing
most care. Stringent inspections furthermore ensure compliance with possibilities. The biocompatibility of this metal is also suitable for
highest quality standards. long-term applications.

INTENSIVE CLEANING PROCESS Thanks to its low mass, titanium is particularly suitable for the use in
middle-ear prosthetics. Compared to other materials, it minimizes
All KURZ prostheses undergo an intensive cleaning process. The re- losses in connection with the transmission of sound energy. More-
sult is an extremely pure surface. This contributes toward ensuring over, the material is extremely resistant to deformation, while at the
irritation-free contact with the sensitive mucosa and helps to pre- same time it can, if required, be adapted to individual anatomical
vent inflammations and granulomas which can develop as a result of situations by bending.
residues or dirt particles.
References:
Wirsching K., Lehle K., Jacob P., Gleich O., Strutz J., Kwok P.
HIGH DEMANDS TO BE MET BY MATERIALS Influence of Surface Processing on the Biocompatibility of Titanium.
Materials 2011, 4(7), 1238-1248; doi: 10.3390/ma4071238
For the production of their prostheses, KURZ uses only high-quality,
clinically tested material: Due to its excellent biocompatibility titanium
has since decades proven its worth as implant material. In addition,
KURZ employs innovative nitinol variants which offer numerous clini-
cally unique benefits. PURE TITANIUM (ASTM F67): CHEMICAL COMPOSITION
Element Grade 1 Grade 2 Grade 3 Grade 4
MR SAFETY TESTS Titanium (Ti) 99.48 99.31 99.19 98.94
MR safety tests also cover the compatibility of KURZ prostheses, as Nitrogen (N) 0.03 0.03 0.05 0.05
long-term implants, with potential future Tesla strengths (up to 7.0 T).
For further MR-related information, see www.kurzmed.com Carbon (C) 0.10 0.10 0.10 0.10
Hydrogen (H) 0.0125 0.0125 0.0125 0.0125
NITINOL Ferrite (Fe) 0.20 0.30 0.30 0.50
Nitinol was discovered in 1958 by the Naval Ordnance Laboratory Oxygen (O) 0.18 0.25 0.35 0.40
(USA). The alloy is made up of nickel and titanium in roughly equal Maximum cut-off grades in % (m/m)
proportions. It is distinguished by good mechanical properties as well
as high resistance to corrosion. Detail
Nitinol can assume different properties: As a shape memory alloy, the
metal is malleable and returns to its pre-programed state when heat-
ed. The KURZ NiTiBOND Stapes Prosthesis makes use of this closing
effect.

Nitinol can also be produced in a superelastic configuration. These
properties have been utilized in the design of the NiTiFLEX Stapes BELL after cleaning. Titanium surface after cleaning.
50 times magnification
1000 times magnification
Prosthesis. The CliP attachment exhibits extreme spring elasticity (KURZ Prosthesis) (KURZ Prosthesis)
and gently couples to the long process of the incus.

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