Polymers

POLYMERS

DesignationNames
Brands
Stock
PolyacetalPOM C
PPSU RADEL®
PolypropyleneTecapro®
UHMWPE GUR 1020 – GUR 1050

Please contact us for all other grades.

STANDARDS RELATING TO POLYMERS

Polyacetal : FDA 21 CFR / 177.2470
UHMWPE : ASTM F 648 / ISO 5834-2 / ASTM F 2695

A range of polymers for medical and dental implants and instruments.

Polymers are extensively used in the manufacture of medical devices, for the production of both implants and instruments.

Plastics used for medical applications must be biocompatible. The use of polymers in the medical sector is increasing. They are used for their properties of flexibility, cost, tribological behaviour, etc.

In recent years, advances have been made in engineering polymers; their toughness and other mechanical characteristics have led to their being used as a substitute for other materials.

ACNIS International offers a range of polymers for both implant and instrument applications.

Our principal products :

  • Polyethylene
  • POM C
  • PEEK (available in our Brazilian subsidiary).

 

1 / Polyethylene

Ultra High Molecular Weight Polyethylene (UHMWPE)

PE was used for the first time in orthopaedics by Professor Charnley in 1962 to manufacture hip replacement cups.
Its tribological characteristics (low coefficient of friction) make it the ideal friction material for orthopaedic joint prostheses. In addition, it is self-lubricating and highly resistant to abrasion.

PE is produced from resins using two manufacturing methods..

The two most common types of PE: :

It is produced from resins and comes in two types:

  • GUR 1020: compression moulded
  • GUR 1050 : extruded

Reticulated PE :
Reticulation involves splitting the intramolecular chemical bonds, which causes the formation of new intermolecular bonds.
Reticulation reduces PE wear and therefore prolongs its service life.
The reticulation process involves irradiation of the material, followed by heat treatment to eliminate free radicals, and sterilisation.

Vitamin-treated forms are also available.

We offer it in different forms, in both bars and sheets

 

2 / Polyacetal Copolymer (POM C)

Non-implantable, according to FDA 21 CFR 177.2470 standards
Used for manufacturing instrument components such as screwdriver handles and also trial prostheses (trial tibial spacers in knee prostheses, for example).
It is available in bars, in 11 different colours and in diameters of 25, 36, 50, 70 and 90 mm.

 

3 / PEEK

Because of its mechanical properties, it is used primarily in the spine for the manufacture of cages and also in arthroscopy for making interference screws.
It is also used in the dental sector.

ACNIS International offers a range of CAD-CAM discs for EAD/EAM prosthetic technology.
It is offered by our Brazilian subsidiary in three forms:

  • Bars
  • Discs for dental prosthetics applications
  • Granules for injection