Example of a TLIF Spinal Cage

Contract Manufacturing

In addition to our own line of Patient Specific Implants, Xilloc offers contract manufacturing of medical devices using Additive Manfuacturing and/or CNC milling.

We manufacture PEEK and titanium implants and polyamide surgical guides and anatomical models all under one roof and ISO13485 certified. We use state-of-the-art professional 3D printers and CNC milling machines.

If you are looking for a qualified medical contract manufacturer, please do not hesitate to contact our engineering team.

Additive Manufacturing of Titanium

Additive manufacturing (3D Printing) of Ti6Al4V grade 5 (Ti64) via Selective Laser Melting technology.

3D printing of titanium offers the unique possibility to include engineered porosity in your design. These porous structures / lattice structures can mimic the structure of trabecular bone and reduce the stiffness of the design to better match the mechanical properties of bone and promote osseointegration (bone ingrowth). Examples include PLIF or TLIF spinal cages.

If you need help with designing lattice structures, for example you prefer a conformal lattice over a uniform lattice, let us know.

Designing for 3D printing in metal (titanium) unfortunately also has its limitations; it’s not entirely “full freedom of design” as you often hear. Please follow these Design Guidelines for 3D printing in metal to help you to make a perfect design that is suitable to be 3D printed in metal. Furthermore, if you require accurate surfaces we can offer CNC milling as a post-processing step.

Osseointegration tibia implant with lattice for bone ingrowth 

CNC Milling of implantable grade PEEK

Example of a PEEK cranial implant

PEEK is an excellent biomaterial with mechanical properties close to cortical bone and is used in a variety of applications. 

Advantages of PEEK:

  • Strength comparable to bone
  • Radiolucent, compatible with CT and MR imaging (no artefacts) and allows radiation therapy
  • Can be (re)sterilized with steam (autoclave), EtO and gamma.
  • Can be modified intraoperatively with surgical tools

Optionally, we can license our patented tangential fixation method and patented suture method.

Additive manufacturing of medical grade Polyamide

Selective Laser Sintering (SLS) of Polyamide (PA2200) surgical guides (see examples) and anatomical models

Advantages of PA2200:

  • Strong yet flexible (doesn’t break if you accidentally drop it)
  • Can be sterilized with steam (autoclave)
  • Full freedom of des
Example of an anatomical model

Post-printing surface treatments

The surface roughness of 3D printed titanium “as-built” is approximately Ra=7µm. Whereas this roughness is desirable in many implants since it increases the surface area and as such improves osteoconduction and/or osseointegration, some applications require a smoother surface.

Therefore additionally we offer several surface treatment methods:

  • Shotblasting
  • Screw thread tapping or milling
  • Milling of 3D printed titanium (to Ra=0,3µm)
  • Polishing (to Ra=0,06µm)
  • Slide grinding
  • Turning

Laser engraving

Using a fiber laser system your logo (and reference number) can be engraved on your PEEK or titanium parts.

Hot Isostatic Pressing

Hot Isostatic Pressing (HIP) treatment can be applied to 3D printed titanium parts to improve the fatigue properties. This is especially advised for load-bearing (orthopaedic) applications.

Ultrasound implant cleaning

While we take the utmost care to avoid contamination during manufacturing and to keep the bioburden to a minimum, we also offer ultrasound cleaning (and packaging) in a ISO class V cleanroom.