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Resins Engineered to Withstand Impact and Sterilization
Biocompatible polycarbonate grades withstand autoclave
sterilization. The material offer strength, mechanical
qualities, and clarity . The latest materials also mark
new improvements in flow and ductility properties, as well
as enhanced resistance to impact and autoclave
sterilization.
Biocompatible Polymers PEEK
Biocompatible polymers are suitable for long and
short-term blood or tissue contact. PEEK polymer is suited
for implantable medical devices and pharmaceutical
applications involving blood or tissue contact for more
than 30 days. It is a stable polymer. It can be processed
via injection moulding, extrusion, or compression moulding,
and is available in standard-, medium-, and low-viscosity
grades. Applications include spinal cages, suture anchors,
spiked washers, surgical screws, femoral implants, dental
healing caps, balloons, intracardiac pumps, and heart
valves.
The PEEK is a biocompatible thermoplastic used in the
development of medical device applications requiring blood
or tissue contact of less than 30 days. The polymer is
said to be one of the most chemically resistant polymers
available. It can be repeatedly sterilized using
conventional methods without experiencing a degradation of
its mechanical properties. Like the Optima material, the
Classix polymer is offered in standard-, medium-, and
low-viscosity grades. Applications include catheter
tubing, drug-delivery products, blood management systems,
laparoscopes, surgical instruments, endoscopes, and
analytical equipment.
Biocompatible Coatings
Medical device coatings that can be engineered to release
drugs are based on inorganic composites that enhance their
biocompatibility. Coatings are developed for combination
devices such as drug-eluting stents as well as orthopaedic
implants.
The microporous, mesoporous, and macroporous coatings
feature good mechanical properties and high drug-loading
capacities. They will not cause inflammation, and have
tailored release properties that are not restricted to any
particular class of drug. Macroporous coatings for
drug-eluting stents exhibit good engraftment properties
owing to their bioactive carbon–based tissue-like surface
structures. Hydrophilic or hydrophobic qualities can be
imparted to the materials, and they can be customized with
covalently or non-covalently absorbed functional compounds
such as antibodies, peptides, or lipoproteins.
Stress-resistant coatings with drug-delivery properties
for orthopaedic implants are also available.
Biocompatible Implantable Polymer
Medical-grade polyurethane exhibits many of the mechanical
properties of silicone rubber and polyurethane elastomers.
The material can be extruded, moulded, solvent cast, and
vacuum formed; it is suitable for long-term implantable
life-supporting devices in the fields of orthopaedics,
plastic surgery, cardiovascular surgery, interventional
cardiology, drug-eluting stents, and cardiac rhythm
management. The product is available in a variety of
formulations, ranging from very flexible to rigid. In
addition, the density and mechanical properties of the
materials can be refined to meet the requirements of
clinicians and medical device designers.
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