Medical Micromachining For Implants

Sanluo Precision is a professional manufacturer and supplier of medical micromachining for implants in China. We focus on cutting-edge technologies and is one of the few specialized manufacturers in China with the capability to process micro- and nano-level implant components. We provide professional customization services for customers and supports the customization of complex and difficult parts. Our company uses ultra-precision processing technology to manufacture human implants and offers high-end customized services for orthopedic implants, cardiovascular interventions, neural regulation, and ophthalmic implants.

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Product Description

Micron-scale Dimensional Control

Sanluo Precision factory has achieved micron-level or sub-micron-level precision in medical micromachining for implants. For vascular stents (diameter 1.5-4mm, wall thickness 0.08-0.15mm), laser micro-cutting is used, with the cutting seam width ≤ 0.03mm and the heat affected zone ≤ 0.01mm. The diameter of cochlear electrodes is 0.3mm-0.6mm, and they are processed using precision turning and wire cutting methods, with a size tolerance of ±0.005mm. The surface roughness of an artificial crystal with a diameter of 6mm and a thickness of 0.5mm, machined by single-point diamond turning, is Ra0.01μm, reaching optical grade. The neural electrodes (contact diameter 0.1mm) made using LIGA (lithography electroforming) technology have a size precision of ±1μm.

dimensional accuracy	OD	ID	T（C）	DP	DA
unit:±/mm	0.002	0.003	0.005	0.005	0.0001
Geometric accuracy	roundness	coaxiality	straightness	cylindricity	circular runout
unit:±/mm	0.001	0.004	0.002	0.003	0.003
production capacity	1~999999 pcs	1~999999 pcs	1~999999 pcs	1~999999 pcs	1~999999 pcs
production cycle	3-20 days	3-20 days	3-20 days	3-20 days	3-20 days

Biological Active Surface

As a professional manufacturer of medical micromachining for implants, Sanluo Precision Micro Manufacturing Implant Factory possesses a variety of bioactive surface treatment technologies. The titanium alloy surface undergoes sandblasting + acid etching (SLA) treatment, forming a micron-level rough surface (Sa = 1-3 μm), which is conducive to the adhesion of osteoblasts. Anodic oxidation yields TiO₂ nanotube arrays (tube diameter 50-100 nm), which is beneficial for bone integration. Plasma spraying of hydroxyapatite coating with a thickness of 50-200 μm enhances bioactivity. The titanium surface is grafted with RGD peptide to enhance cell recognition. The surface energy is controlled, with a contact angle of 30-70°, which is conducive to protein adsorption and cell behavior.

Animal Experiments and Clinical Trials

Sanluo Precision Company assists clients in completing the preclinical validation of medical micromachining for implants products. Biomechanical tests measure force, extraction force, and torque strength to evaluate the stability of the implant. Imaging evaluations include X-rays, CT scans, and MRI to observe the position of the implant and the bone integration. The company provides customized medical micromachining for implant services specifically for artificial joints, spinal fusion devices, cranial repair, heart valves, and other implant products.

Technical Parameter List

Parameter Categories	Parameters Details
Equipment Model	Swiss Nano 7
Core Positioning	Ultra-high precision machining of small workpieces
Number of Axes and Structure	6-axis kinematic structure with back axis mounted on three linear axes
Processing Capacity	The maximum processing diameter is 7 mm (there are also 4mm and 10mm versions)
Tool System	Up to 18 knives (5 power knives)
Special Processes	Support high value-added machining such as hobbing, multilateral turning, thread milling, internal and external cyclone milling
Core Advantages	Symmetrical cast iron construction gives excellent rigidity and design simplicity
Typical Applications	Medical equipment and medical micromachining for implants, clock parts and electronic parts processing

Parameter Categories	Parameters Details
Equipment Model	160 series CNC vertical machining center
Core Positioning	Ultra-high precision machining of precision shaft and shell parts
Number of Axes	Based on three axes, it can be increased to four axes.The fifth axis (5 axes simultaneously) can be installed under certain conditions
Key Accuracy	Factory accuracy: spindle radial/end runout≤0.5μm; machining roughness up to Ra=0.4~0.04μm; hard turning up to HRC65
Travel (X/Y/Z)	Longitudinal axis X=1600 mm, transverse/vertical Y axis =700 mm, Z=635 mm
Structural Features	Cast iron buildings are heavily stiffened.Fixed columns with frame construction at "C" provide shock absorption.Ball screws are fixed on all shafts, prestressed to improve heat resistance
Numerical Control System	Optional Siemens CNC system or FANUC system
Core Advantages	It can realize "turning instead of grinding" or integrated machining of turning, milling and grinding, equipped with linear cutter system and micro-precision manual tailstock.
Typical Applications	precision medical micromachining for implants etc.