|
 The
newly-developed intra-uterus contraceptive device (IUCD) framed
with TiNi shape memory alloy is a major breakthrough in the
human society. This innovation was highly appraised by UNESCO
officials and found great popularity all around the world.
Good Biocompatibility
Scaffold made of Nitinol,a new biomaterial
whose biocompatibility has long been established through 20
years of world wide extensive studies and various medical
applications of shape memory devices including orthopedic
devices, nonvascular and cardio-vascular stents.
Minimally Invasive
Unique shape design and material selection
warrant that a retentive and tender expansive force is supplied
to both arms of the device: "Retentive" as the
scaffolding wire may be subject to elasticity in excess of
10%with very high fatigue resistance; "Ternder" as
this pseudo-elastic material is characterized by a stress
plateau that exerts an expansive force almost unchanged with
deformation extent.
This unique design and material selection
renders the device highly functional with small copper exposure
area (100mm2) which minimizes concerns over the side effect of
excess copper ions.Its simple structure also eliminates foldings
or cross points that may act as site for of bacteria
accumulation which could pose as imflammatory risk.
Superior Clinical Effect
Among the 2100clinical cases for 12 months of observation,only 1
case was subject to displacement and no woman was pregnant with
very little complications or side effect.
Long Service Life
It can be safely and effectively used for over 100years as
calculated from the release or erosion rate of the copper ends
and the body material.Its recommended service life is evaluated
to be 20-30 years though the final time shall depend on further
clinical observations.
Easy Insertion and Withdrawal
The shape design and good elasticity of the body structure
enable convenient insertion and withdrawal through low profile
catheters.
|
|
