Medical Device
🧲 MRI-Compatible Cranial Fixation & Stereotactic Frames
Ring-shaped frame with 4-point pin fixation, adjustable arc/quadrant for probe targeting, vernier scales for coordinate positioning
What is MRI-Compatible Cranial Fixation & Stereotactic Frames?
🧲 MRI-Compatible Cranial Fixation & Stereotactic Frames represents a complete system of precision titanium components engineered for Medical Device applications. Ring-shaped frame with 4-point pin fixation, adjustable arc/quadrant for probe targeting, vernier scales for coordinate positioning The system integrates 0 distinct component types manufactured through 3 specialized processes.
Engineering & Design Principles
Material: Grade 1 (CP-Ti) is non-magnetic and MRI-compatible, producing zero image artifact. Higher strength than plastics but without the magnetic susceptibility of steel or even Grade 5.
Form: Bar and plate stock for ring fabrication. Small diameter bar for fixation pins. All material must be certified MRI-safe (magnetic susceptibility <10^-5).
Standards & Material Specifications
Standards: ASTM B348 Grade 1 CP-Ti, annealed, MRI compatibility certified, 100% coordinate inspection + passivated
Engineering Solution Blueprint
Trauma & Spine Fixation Hardware
Medical Device
1 Part Feature Analysis
Intramedullary nails with proximal/distal locking holes, pedicle screw tulip heads for rod connection, interbody fusion cages with lattice architecture, craniofacial reconstruction mesh, cannulated bone screws with guidewire channels, polyaxial connection rods
- ⚠️ Stress shielding from implant-to-bone stiffness mismatch causing osteopenia
- ⚠️ Screw pullout in osteoporotic bone with low bone mineral density
- ⚠️ MRI artifact generation from ferrous alloys obscuring post-op imaging
- ⚠️ Fatigue fracture of nails under early patient weight-bearing protocol
- ⚠️ Screw back-out from cyclic spinal loading causing loss of correction
2 Material Selection Rationale
Grade 23 Ti-6Al-4V ELI — Ultra-low interstitial, implant grade
Ti-6Al-4V ELI (ASTM F136 / ISO 5832-3) is mandatory for all permanent spinal and trauma implants. Oxygen <0.13%, iron <0.25% for maximum fracture toughness. Grade 9 (Ti-3Al-2.5V) for spinal rods requiring intraoperative bendability with spring-back. Ti-6Al-7Nb (ASTM F1295) for vanadium-free pediatric implants.
3 Form Selection Rationale
Round Bar / Rod — for turning, fasteners
VAR-melted bar stock for nails and screws via gun-drilling + swiss turning. LPBF 3D printing for interbody cages with porous lattice. Precision sheet stamping + chemical etching for craniofacial mesh. Centerless ground bar for spinal rods.
4 Manufacturing Process & Services
Core Processes:
Toll Processing Services:
Process Pitfalls:
- ⚠️ Cannulated screw guidewire channel concentricity must be <0.1mm TIR to prevent wire binding during insertion
- ⚠️ Pedicle screw tulip head must accept rods up to +-15 degrees angulation for multi-level constructs
- ⚠️ Interbody cage porosity must be 60-80% with pore size 300-600um for optimal bone ingrowth — verified by micro-CT
5 Procurement Specifications
ASTM F136 / ISO 5832-3 Ti-6Al-4V ELI, 100% dimensional + mechanical tested, cleanroom packed (ISO 7), MTC traceable to VAR ingot
Manufacturing Process Flow
5-axis CNC milling centers provide simultaneous multi-axis interpolation for complex titanium components. The ability to tilt the tool relative to the
Fiber laser marking on titanium produces high-contrast, permanent identification marks by controlled surface oxidation or micro-engraving. UDI codes,
Laser drilling of titanium uses pulsed laser energy to create precise holes through percussion or trepanning methods. Hole diameters range from 0.05 m
Components in This System
Frequently Asked Questions
What titanium grades are used in MRI-Compatible Cranial Fixation & Stereotactic Frames systems?
What manufacturing processes are used for MRI-Compatible Cranial Fixation & Stereotactic Frames?
What quality standards apply to MRI-Compatible Cranial Fixation & Stereotactic Frames components?
What industries use MRI-Compatible Cranial Fixation & Stereotactic Frames?
Can you provide DFM feedback for MRI-Compatible Cranial Fixation & Stereotactic Frames designs?
Engineering Trends
- ▸ Process: CNC machining of ring and frame components
- ▸ Process: Precision drilling of pin guides
- ▸ Process: Coordinate measurement of fiducial markers
Related Manufacturing Capabilities
These specialized processes support MRI-Compatible Cranial Fixation & Stereotactic Frames component manufacturing.
One Metal. One Focus. Infinite Precision.
Founded in 2011 in Baoji's Titanium Valley, BOZE Metal is dedicated exclusively to titanium — from raw material to precision engineering. AS9100D, ISO 13485 & ISO 9001 certified with 500+ clients across Aerospace, Medical & Motorsport industries, we deliver end-to-end precision titanium CNC machining with full material traceability from source to component.
Boze Titanium Manufacturing Center is operated by Baoji Boze Metal Products Co., Ltd.