Medical cable assembly is one of our focused segments — about 12% of factory volume, but a higher share of attention because of the documentation load. We run ISO 13485 certified workflow on a dedicated line, separate from consumer electronics work. Clients include imaging equipment makers in the US, ultrasound OEMs in Europe, endoscope manufacturers in Japan, and patient monitoring startups across several markets. Material traceability extends to wire mill and connector lot. DHR elements, material biocompatibility declarations, and sterilization compatibility data are available as part of the standard delivery package.
What Makes a Cable “Medical Grade”?
The phrase gets thrown around loosely. In practice, a medical grade cable meets three concrete requirements beyond standard industrial cable:
- Biocompatibility for its contact classification. ISO 10993-1 defines contact classifications based on whether the cable touches intact skin, mucous membranes, or implanted tissue, and for how long. Materials have to pass the relevant subset of ISO 10993 tests.
- Sterilization compatibility. The cable has to survive whatever sterilization process the device uses — EtO, gamma, autoclave, or STERRAD. Each attacks different materials differently, so construction has to be matched to the sterilization method.
- Documentation trail. Lot traceability, material certificates, and DHR records required by FDA 21 CFR 820 and EU MDR. This is often where the real work happens — the cable electrically performs fine, but the paperwork has to be bulletproof.
A “medical grade” cable without these three is just an industrial cable with a higher price tag. We don’t sell it that way.
Biocompatible Materials We Work With
Material selection starts with the device’s contact class and sterilization method. Common choices in our medical work:
- Medical-grade PVC (DEHP-free). Cost-effective option for external cables in patient monitors, diagnostic equipment, and accessories. DEHP-free formulation required for EU markets and increasingly for US.
- Silicone (platinum-cured). USP Class VI compliant, excellent autoclave resistance, biocompatible for skin and short-term mucous contact. Common in reusable device cables and probe assemblies.
- Polyurethane (PU). Pellethane and Tecoflex grades for flexible, durable cable jackets. Good chemical resistance. Used in cardiac catheter cables, neurostimulator leads, and high-flex patient cables.
- PEEK. For long-term implant or high-temperature applications. Expensive but unmatched biocompatibility and chemical resistance.
- PFA and FEP. Fluoropolymer insulation where chemical resistance and sterilization tolerance matter more than flexibility.
All material declarations include ISO 10993 test data, RoHS compliance, and REACH SVHC status. For specific implant or long-term contact applications, we source from material suppliers with full USP Class VI test files on record.
Sterilization Compatibility
Different sterilization methods attack cables differently. We build with the target method in mind:
| Method | Temperature | Compatible Materials | Typical Use |
|---|---|---|---|
| EtO (Ethylene Oxide) | 30–60 °C | PVC, silicone, PU, PEEK, PFA, FEP | Single-use devices, heat-sensitive components |
| Gamma (25 kGy) | Ambient | PU, PE, PEEK, PFA, FEP, radiation-stabilized PVC | Pre-packaged single-use devices |
| Autoclave (121–134 °C steam) | 121–134 °C | Silicone, PEEK, PFA, FEP | Reusable instruments, surgical tools |
| STERRAD (H2O2 plasma) | 45–55 °C | Most plastics (avoid natural cellulose) | Heat-sensitive reusable devices |
Tell us the sterilization method during quoting, and we’ll match cable construction to survive the specified number of cycles. For reusable devices, we can run sterilization cycle testing as part of qualification.
Medical Cable Categories We Build
The medical cable category spans very different physical products. Here’s where our production actually goes:
Ultrasound probe cables. Coax-based, often with 64, 128, or 256 conductors in a single bundle. These carry signals from the transducer back to the imaging console. Flexibility and durability under repeated flex cycles matter as much as electrical performance.
Endoscope cables. Ultra-fine micro-coax for the image sensor at the scope tip, plus control and light guide connections. Cable diameter goes down to 0.5 mm. See our micro-coaxial cable page for the technical construction details.
Patient monitoring cables. ECG, SpO2, blood pressure, temperature. Usually external cables connecting sensors to a bedside monitor. Reusable, so they need autoclave or STERRAD compatibility and stand up to thousands of cleaning cycles.
Diagnostic imaging cables. X-ray detector cables, CT gantry cables, MRI patient coil cables. Often LVDS or coax-based inside the system; external cables connect to detector modules and patient interfaces. See our LVDS cable page for display-side builds.
Surgical instrument cables. Electrosurgery, laparoscopic instrument control, robotic surgery tool interfaces. Class II and III devices with tight compliance requirements.
Portable and home medical devices. Handheld ultrasound, wearable monitors, telehealth devices, dental equipment. Consumer-style form factor, medical-level material and documentation requirements.
Dialysis and infusion pump cables. Internal wiring and external sensor cables for life-sustaining therapy equipment. Long service life, continuous operation, auditable quality documentation.
Why SZFRS for Medical Cable Manufacturing
Medical cable is less forgiving than industrial cable. Not because of electrical performance — that’s often simpler than high-speed consumer cable — but because the documentation and compliance work is extensive. Our approach:
Dedicated ISO 13485 production line. Medical programs run physically separate from consumer work. This keeps contamination risk low and ensures documentation doesn’t mix. Our ISO 13485 certificate details live on the quality and certifications page.
Material-to-cable traceability. Every medical cable ships with a DHR-ready traceability record — wire spool lot, connector lot, jacket material lot, assembly operator, test date. Retained 5+ years per ISO 13485 requirements.
Biocompatibility documentation support. We provide material composition declarations, ISO 10993 test data copies, and USP Class VI documentation where applicable. For novel applications requiring additional testing, we coordinate with third-party labs like Intertek or SGS on behalf of clients.
Sterilization cycle testing. For reusable devices, we run accelerated sterilization testing on sample cables to verify the construction survives the target cycle count (typically 50, 100, or 300 cycles depending on device class).
Regulatory submission support. For US FDA 510(k) and EU MDR submissions, we provide the portion of the documentation package that relates to the cable component: materials, manufacturing process, biocompatibility, and performance data. Your RA team adds the device-level context.
IPC/WHMA-A-620 Class 3 on request. Medical programs often specify Class 3 workmanship (high reliability) rather than Class 2. We run either. See our capabilities page for inspection equipment.
Our Medical Cable Manufacturing Process
- Design and documentation review. Drawing, BOM, intended device class, sterilization method, and contact classification verified. We flag any documentation gaps before quoting.
- Material sourcing with biocompatibility data. Wire, connectors, and jacket materials ordered from qualified medical suppliers. Each lot comes with ISO 10993 data where required.
- Incoming inspection. Medical programs run separate IQC with stricter acceptance criteria than consumer work. Every lot documented.
- Precision assembly. Operators certified to IPC/WHMA-A-620 Class 3 when specified. Crimp, solder, and overmolding done to medical documentation standards.
- In-process documentation. Every assembly step logged with operator ID, equipment ID, and timestamp. This is what makes DHR records bulletproof later.
- 100% electrical testing. Continuity, hi-pot, and application-specific electrical tests per device spec.
- Visual and dimensional inspection. Class 3 acceptance criteria by default for medical programs.
- Cleanroom packaging (if specified). Some medical cables require Class 8 cleanroom final packaging. We subcontract this step to a qualified cleanroom partner when needed.
- Documentation package. Certificate of Conformance, material certs, lot traceability report, biocompatibility declaration, sterilization compatibility statement, and electrical test data shipped with the order.
Frequently Asked Questions
Do you hold current ISO 13485 certification?
Yes. ISO 13485:2016 certification is current, annual surveillance audit completed, and certificate copies available on request through our contact page. Registrar name, certificate number, and scope statement included in the certificate copy.
Can you support FDA 510(k) and EU MDR submissions?
Yes, for the cable component of your device. We provide materials documentation, process description, DHR elements, biocompatibility data, and test reports. Your regulatory team integrates this into the overall device submission. We don’t file submissions ourselves — that’s the device manufacturer’s responsibility.
What’s the difference between USP Class VI and ISO 10993?
USP Class VI is a US Pharmacopeia biocompatibility standard common in medical device material qualification. ISO 10993 is the international biocompatibility standard with a broader, test-specific framework. Most modern medical devices specify ISO 10993 testing per the contact classification. USP Class VI is sometimes requested for historical or US-specific reasons. We source materials that meet either or both.
Can you work with DEHP-free medical PVC?
Yes. DEHP-free medical PVC is standard stock. Required for EU MDR and increasingly specified for US devices. If your device is distributed in Europe, default to DEHP-free.
Can you handle cleanroom final packaging?
Through a qualified cleanroom partner. We manufacture in our standard ISO 13485 facility (not cleanroom), then subcontract final packaging to a Class 8 cleanroom when required. This keeps cost reasonable while meeting device-level cleanroom specs.
Do you build cables for implantable devices?
Short-term implantable (under 24 hours contact) we handle. Long-term or permanent implantable work requires specialized material qualification and process controls beyond our current scope. Send us your device class and intended use — we’ll tell you whether it’s in our scope or recommend a specialized implantable-cable partner.
What’s your MOQ and lead time for medical cable?
Production MOQ is 100 sets. Prototype batches of 10–50 pieces available with NRE. First samples 10–14 days for standard medical builds, longer if material qualification is required for new biocompatible material. Repeat production 14–21 days because of the documentation overhead compared to consumer cable.
Can you handle both single-use disposable and reusable device cables?
Yes. Single-use has simpler sterilization requirements (typically EtO or gamma, one cycle). Reusable demands cable construction that survives dozens to hundreds of sterilization cycles — autoclave, STERRAD, or high-level disinfection. We scope the build to match.
Related Cable Products
If you’re specifying cables for a medical device:
- Cable Assembly — full overview of our cable assembly capabilities across protocols.
- Micro-Coaxial Cable — ultra-fine coax for endoscopes and imaging probes.
- LVDS Cable — display signal cables for medical imaging systems.
- Quality & Certifications — full ISO 13485, IATF 16949, and IPC/WHMA-A-620 documentation.
- Custom Cable Assembly — bespoke designs beyond standard medical formats.
Ready to Discuss Your Medical Cable Project?
Send us the device description, target contact class, sterilization method, and expected volume. Our engineering team will respond within 24 hours with a quote, material recommendation, and documentation scope. NDAs executed upfront if your device is still in pre-regulatory review.