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.
Manufacturing services we offer
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).
|Osseointegration tibia implant with lattice for bone ingrowth||Intervertebral disc with voronoi lattice|
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.
PEEK is an awesome 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
Selective Laser Sintering (SLS) of Polyamide (PA2200) surgical guides (see examples), (arm) splints 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 design (even working assemblies are possible)
- Dish-washer safe
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:
- Screw thread tapping or milling
- Milling of 3D printed titanium (to Ra=0,3µm)
- Polishing (to Ra=0,06µm)
- Slide grinding
Coatings can be applied to achieve desired surface properties. Through our trusted subcontractors we can offer various coatings.
Examples of coatings:
- Hydroxyapatite (HA) coating on titanium
- Titanium Niobium Nitride on titanium
- Titanium coating on PEEK
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.
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.