Medical stent moulding

In addition, our company has established cooperative relationships with plastic raw material suppliers, printing manufacturers, etc. to ensure the supply of raw materials and printing quality. Through our rich experience and perfect supply chain, our company can provide customers with high-quality customized medical stent products to meet their specific needs. At the same time, we have 10 years of professional foreign trade service experience, understand the foreign trade process, and better serve our customers. For medical stent products, we can make corresponding plastic parts, which is mainly done through injection molds.

Medical stent injection mold technology has very high technical requirements

1. Core design challenges and solutions

Microstructure precision control

Feature size: Vascular stent wall thickness ≤ 0.1mm, the mold needs to be processed at the nano level (tolerance ± 2μm), and a multi-axis linkage wire-cut machine tool (precision 0.005mm) is used to carve the microporous structure.

Parting surface design: For the stent grid hollowing, a 3D parting surface + slider linkage mechanism is used, and the parting line offset is < 0.01mm to avoid burrs affecting blood compatibility.

Biological material adaptability

High temperature material response: PEEK injection molding requires a mold temperature of 180-220℃, and the mold steel is made of tungsten-molybdenum alloy (such as YXR33, temperature resistance > 350℃), and the cooling water channel uses a titanium alloy 3D conformal pipe (cooling efficiency increased by 40%).

Degradable material processing: PLA/PGA materials are easy to hydrolyze, and the mold surface is coated with diamond-like carbon (DLC) coating to reduce the friction coefficient (μ≤0.1) and reduce the risk of material degradation

2. Key technologies for mold manufacturing

Cavity processing: five-axis ultra-precision milling + micro-hole EDM (electrode diameter 0.03mm

Exhaust system: laser-etched honeycomb micro-exhaust groove (depth 5-8μm)

Demolding mechanism: silicon nitride ceramic ejector + vacuum adsorption assisted demolding

3. Material and process innovation

Medical grade steel selection

Main mold frame: SUS420J2 stainless steel (HRC52-54), FDA biocompatibility certification;

Moving parts: cobalt-based alloy (such as Stellite 6K), wear life ＞1 million times.

Intelligent process monitoring

The mold is embedded with an optical fiber sensor (temperature resistance 300℃), real-time monitoring of melt pressure (accuracy ±0.1MPa) and temperature (±0.5℃), and the data is directly connected to the MES system to automatically optimize parameters.

Cleanliness guarantee

Assembly environment: ISO Class 5 Clean workshop (particles ≤ 3,520/m³), surface residue of mold after ultrasonic cleaning < 0.1mg/m².

4. Verification and compliance system

Performance verification standard

Mechanical test: simulated stent expansion test (pressure 20MPa, 100,000 cycles), mold structure deformation < 0.005mm;

Biosafety: passed ISO 10993-1 cytotoxicity test, no heavy metal precipitation on the mold surface (lead content < 0.001μg/cm²).

Production qualification requirements

The mold factory must have ISO 13485:2025 certification, each mold generates a unique digital twin, and the entire life cycle data is stored on the blockchain

5. Recommendations:

Priority technology route: Select the metal powder injection molding (MIM) mold solution to adapt to the mass production of cobalt-chromium alloy stents

Supply chain collaboration: lock in PEEK-GF30 medical-grade particles with material suppliers (recent price fluctuations ±5%)

Risk plan: Purchase mold extended warranty service (covering 2 million molds or 3 years)

6. Production points:

Ultra-high precision design standards

Micron-level structure control

Wall thickness and tolerance: Cardiovascular stent wall thickness ≤ 0.1mm, mold cavity tolerance must be controlled within ±2μm, and a five-axis ultra-precision machine tool (precision 0.005mm) to process microporous structure.

Parting surface optimization: In view of the hollowing characteristics of the stent grid, 3D curved parting + slider linkage mechanism is adopted, and the parting line offset error is ≤0.01mm to avoid burrs affecting blood compatibility.

Intelligent temperature control system

Conformal cooling water channel: 3D printed titanium alloy embedded water channel (diameter 0.8-1.2mm), cooling efficiency is increased by 40%, and mold temperature fluctuation is controlled at ±0.5℃ (PEEK material injection molding requires mold temperature 200±5℃).

Partition temperature control: 16 sets of micro thermocouples are embedded in the mold to adjust the temperature gradient of key parts of the stent (such as connection points) in real time to prevent stress concentration from causing fracture.

Clean manufacturing environment

Workshop standard: ISO Class 5 clean room (particles ≤3,520/m³), the entire mold assembly process is operated in a nitrogen protection box, and the surface residue is <0.1mg/m².

Cleaning process: Plasma cleaning + supercritical CO₂ drying are used to eliminate organic pollutants and microbial residues.

Material safety certification

Mold steel has passed the ISO 10993-1 biocompatibility test, and the amount of heavy metal precipitation (such as nickel and chromium) is less than 0.001μg/cm²;

Lubricant uses medical grade polytetrafluoroethylene (PTFE), which complies with FDA 21 CFR 177.1550 standards

Medical stent Mold

We are a medical stent mold manufacturer, providing high-quality medical stent mold manufacturing. As long as you want to customize/develop medical stent products, you can find us. We have professional injection mold design and mature manufacturing technology, providing you with one-stop service, from product design-mold making-product production-product packaging-product transportation, we can help you in every link. As long as you come to us, we will provide you with the ultimate service and satisfy you in terms of product quality, production time, information dialogue, etc.

Plastic Injection Mould making

Plastic molding specifications

Mold design:

Transaction process:

Mold testing:

Product packaging

Factory

We are Custom Plastic Mold factory. Our factory is plastic injection mold maker. we has 17 years of experience in professional custom plastic mold and 10 years of foreign trade experience. We are custom Plastic Mold supplier. We can provide custom Plastic Mold service. Our factory can make the Injection molded plastic parts, and the quality of the products will satisfy you.

We have more than 50 high-end machines and hundreds of engineers and designers. We can provide one-stop service, from product design - mold making - product production - product packaging - transportation. We have a complete production chain. We can meet all your requirements.

Services we provide:

Professional custom mold service, Plastic mold design and manufacturing .plastic product production, product design, mold design, blow mold customization, rotational mold customization, die-casting mold customization. 3D printing services, CNC manufacturing services, product packaging, customized packaging, shipping services.

We always adhere to the principles of quality first and time first. While providing customers with the highest quality products, try to maximize the production efficiency and shorten production time. We are proud to tell every customer that our company has not lost any customer since its establishment.If there is a problem with the product, we will seek a solution actively and take responsibility to the end.

FAQ

Q1: Are you trading company or manufacturer ?

A: We are manufacturers.

Q2. When can I get the quotation?

A: We usually quote within 2 days after we get your inquiry.

If you are very urgent, please call us or tell us in your email so that we can quote for you first.

Q3. How long is the lead-time for mold?

A: It all depends on the products' size and complexity. Normally, the lead time is 25 days.

Q4. I have no 3D drawing, how should I start the new project?

A: You can supply us a molding sample, we will help you finish the 3D drawing design.

Q5. Before shipment, how to make sure the products quality?

A: If you don't come to our factory and also don't have the third party for inspection, we will be as your inspection worker.

We will supply you a video for production process detail include process report, products size structure and surface detail, packing detail and so on.

Q6. What is your payment terms?

A: Mold Payment: 40% deposit by T/T in advance, 30% second mold payment before sending out the first trial samples, 30% mold balance after you agree the final samples.

B:Production Payment: 50% deposit in advance, 50% before sending out the final goods.

Q7: How do you make our business long-term and good relationship?

A:1. We keep good quality and competitive price to ensure our customers benefit for best quality products.

2. We respect every customer as our friend and we sincerely do business and make friends with them, no matter where they come from.