- Tel: +8613911709825 /
- Email: ry@rays-casting.com /
Looking for a Metal Cup that's durable, insulated, BPA-free?
Looking for a Metal Cup that's durable, insulated, BPA-free?
A Closer Look at the Metal Cup for Hip Arthroplasty
I’ve toured more than a dozen implant shops over the years, and—believe it or not—the quiet hero of many successful hip replacements is the acetabular shell. The Metal Cup from a Hebei-based manufacturer has been getting attention lately, partly because surgeons want predictable fixation and OEMs want tight tolerances without eye-watering prices. Trends? Additive porous structures, smarter locking mechanisms, and cleaner metallurgy. Actually, it’s the combination that matters.
Origin: NO.17, Zhenxing Avenue, High-tech Indusrial Development Zone, Wei County, Xingtai City, Hebei Province, China.
Built in titanium alloy (Ti-6Al-4V ELI) or cobalt-chromium, the Metal Cup is a load-bearing base for the acetabular component. The anatomical geometry aims for alignment and load distribution; the surface finish is tuned for bone on-growth or in-growth, depending on the surgeon’s philosophy (and, to be honest, hospital inventory).
Product specifications (typical)
| Material options | Ti-6Al-4V ELI (ASTM F136) or CoCr (ASTM F75) |
| Outer diameters | ≈44–66 mm (2 mm increments); real-world availability may vary |
| Surface options | Porous titanium (≈200–500 µm pores), HA coating (≈50–80 µm), grit-blast |
| Tolerances | Bore/OD machining ≈±0.02–0.05 mm; Ra tailored per liner spec |
| Liner compatibility | XLPE, UHMWPE, ceramic liners; standard locking grooves or taper rings |
| Fixation | Press-fit, optional screw holes (clustered/variable angles) |
Manufacturing flow and quality checkpoints
- Material prep: certified bar/forging (ASTM F136 or F75); heat lot traceability.
- Forming: precision forging or investment casting (for CoCr); near-net AM for porous shells in some lines.
- Machining: 5-axis CNC of taper and locking features; deburr; dimensional CMM checks.
- Surface engineering: grit-blast; porous layer via EBM/laser or plasma spray; optional HA per ASTM F1185.
- Passivation/cleaning: per ASTM F86; validated ultrasonic cleaning; low-residue packaging.
- Testing: coating adhesion (ASTM F1044/F1147), porosity (ASTM F1854), corrosion (ASTM F2129), wear simulation with liner (ISO 14242-1), biocompatibility (ISO 10993 series).
- Service life: registry data suggest many cups last 15–25 years; individual outcomes vary with patient factors.
Application scenarios and performance
Primary and revision THA, especially osteoarthritis and AVN cases. Surgeons tell me press-fit versions bite well in Dorr A/B bone; in softer bone, screw-hole options help. In simulator tests I’ve seen referenced, modern XLPE/ceramic pairings often show ≈2–10 mg wear per million cycles, though your liner selection is the real driver.
Vendor landscape (pragmatic view)
| Vendor type | Strengths | Watch-outs |
|---|---|---|
| Multinational OEM | Proven registries, broad liner ecosystems, global support | Premium pricing, longer customization cycles |
| Specialized contract manufacturer | Agile engineering, competitive lead times, niche geometries | Brand recognition varies; regulatory ownership must be clear |
| Rays Casting Metal Cup | Solid Ti/CoCr options, porous/HA surfaces, sensible tolerances | Confirm liner compatibility matrix and regional approvals |
Customization and integration
Options include shell diameters, screw-hole patterns, porous grade, HA coverage, and color-anodized IDs. OEMs often request private-label markings, UDI, and packaging to ISO 13485. If you’re pairing the Metal Cup with ceramic liners, validate taper geometry and seating forces per supplier specs—sounds boring, saves headaches.
Field notes (short cases)
- Regional hospital, primary THA: press-fit Metal Cup with XLPE liner; reported easy seating and stable press-fit; 6-month X-rays showed reassuring radiodensity around the rim.
- Revision case: CoCr shell with tri-cluster screws; surgeon liked the screw angulation freedom; “not flashy, just did the job.”
Certifications and documentation to request
Material certs (ASTM F136/F75), ISO 13485 QMS, biocompatibility per ISO 10993, coating verification (ASTM F1044/F1147/F1854), corrosion data (ASTM F2129), and hip simulator wear (ISO 14242). If you need US/EU market access, align with FDA class II special controls and MDR technical files.
Authoritative sources
- ASTM F136: Ti-6Al-4V ELI for surgical implants
- ASTM F75: Cobalt-Chromium surgical implant alloy
- ISO 14242-1: Hip prostheses — Wear testing
- ISO 10993 series: Biological evaluation of medical devices
- ASTM F1854: Analysis of porous coatings
- FDA: Class II Special Controls for hip joint systems
- National Joint Registry (UK): Annual reports and survivorship data
-
Half KneeThis minimally invasive solution preserves healthy bone, ligaments, and joint structures, enabling faster recovery and more natural knee kinematics. The system includes femoral and tibial components made from durable cobalt-chromium alloys and wear-resistant polyethylene inserts. -
Tibial PlateauAvailable in both fixed-bearing and mobile-bearing configurations, the implants include modular baseplates and polyethylene inserts to accommodate various patient anatomies and surgical techniques. -
Unilateral Tibial PlateauThe unilateral tibial plateau is an orthopedic implant used in partial knee arthroplasty to replace the damaged medial or lateral tibial joint surface, thereby restoring function, relieving pain, and ensuring knee stability. -
Humeral HeadAvailable in a range of diameters and offsets, they are designed to accommodate diverse patient anatomies and ensure proper soft tissue tensioning. Each humeral head is precisely machined from high-strength cobalt-chromium or ceramic materials, offering excellent wear resistance and biocompatibility. -
Ball HeadOur Ball Head component is designed for use in joint replacement procedures, particularly in hip and shoulder arthroplasty. Crafted from high-strength materials such as cobalt-chromium alloy or ceramic, the ball head ensures excellent wear resistance and long-term durability. -
Revision Femoral CondyleThe Revision Femoral Condyle is engineered for use in knee revision surgeries, providing reliable solutions for patients requiring joint reconstruction due to implant failure, loosening, or wear. Made from biocompatible materials such as cobalt-chromium alloy, the revision condyle features enhanced durability and resistance to wear. Its design includes optimized geometry to restore proper knee function and alignment, ensuring a secure fit even in cases of significant bone loss. -
Bump Half PlatformManufactured from biocompatible, high-strength materials like titanium or cobalt-chromium alloys, it ensures durability and long-term performance. Ideal for knee, hip, or other joint replacements, the Bump Half Platform enhances surgical efficiency, minimizes inventory needs, and delivers reliable clinical outcomes with optimal joint alignment and function. -
Femoral CondyleOur Half Platform system is designed to offer modular versatility in joint replacement procedures, particularly for hip and knee applications. It allows surgeons to combine components from different implant systems while maintaining biomechanical integrity and surgical efficiency. -
Refurbished PlatformCarefully Reprocessed To Meet The Highest Quality And Safety Standards, This Platform Is Ideal For Patients Requiring Revision Surgeries Or Those Seeking A Sustainable Option. -
Acetabular CupMade from high-strength materials such as titanium alloy or cobalt-chromium, the Acetabular Cup ensures durability, corrosion resistance, and long-lasting performance. Its anatomical shape promotes optimal alignment and load distribution, reducing wear on bearing surfaces. -
Metal CupOur Metal Cup is a critical component in hip joint replacement systems, designed to provide a durable and secure base for the acetabular implant. Manufactured from high-strength materials such as titanium alloy or cobalt-chromium, the Metal Cup offers excellent wear resistance, corrosion resistance, and long-term stability. Its anatomical design ensures proper alignment and load distribution, while its surface finish promotes optimal bone fixation.
-
TalusTitanium alloys or PEEK materials that meet international medical standards are selected, featuring both strength and biocompatibility, effectively reducing the risk of rejection and promoting bone integration.
Get a Custom Solution！
Contact Us To Provide You With More Professional Services
