Custom Plastic Enclosures for Medical Devices

Medical devices commonly use FDA-compliant plastics such as PETG (Polyethylene Terephthalate Glycol), medical-grade ABS (Acrylonitrile-Butadiene-Styrene), and polycarbonate. PETG is frequently chosen for its excellent clarity, chemical resistance, and compatibility with multiple sterilization methods including EtO and gamma radiation. Medical-grade ABS offers superior impact resistance and durability for equipment housings. Hill Plastics works with these biocompatible materials and assists in selecting the optimal plastic based on your device's sterilization requirements, chemical exposure, mechanical strength needs, and regulatory compliance standards.

Yes, we manufacture enclosures using materials specifically selected for compatibility with common medical sterilization methods including ethylene oxide (EtO) gas, gamma radiation, autoclave steam sterilization, and chemical disinfection. During the design consultation phase, our engineering team evaluates your sterilization protocol requirements and recommends appropriate FDA-compliant plastics that maintain dimensional stability, color consistency, and structural integrity through repeated sterilization cycles. We ensure material certifications and technical data sheets support your regulatory documentation needs.

Our advanced CNC trimming centers equipped with automated routing equipment routinely achieve tolerances within ±0.010" to ±0.030" depending on part geometry and material selection. For medical device applications requiring precision fit for electronics, optical components, or mechanical assemblies, we implement comprehensive quality control protocols including dimensional verification at multiple production stages. Our SolidWorks CAD integration enables precise tooling design, while our experienced staff—averaging 20+ years in the industry—ensures consistent dimensional accuracy across prototype and high-volume production runs.

We can typically produce prototype enclosures in 3-5 weeks from approved design specifications. Our rapid prototyping process uses low-cost wood or polyurethane master patterns CNC-milled to exact drawings, allowing quick mold fabrication and prototype thermoforming. This accelerated timeline supports design reviews, functional testing, and regulatory submission preparations. If design modifications are needed after initial prototype evaluation, changes can be efficiently implemented in the wood pattern before committing to production aluminum tooling, minimizing development costs and timeline delays.

Hill Plastics accommodates projects from single prototypes through high-volume production runs of thousands of units. We don't impose restrictive minimum order quantities, making our services accessible for early-stage medical device startups conducting design validation as well as established manufacturers requiring ongoing production supply. Our eight thermoforming machines ranging from 2'x3' to 5'x9', including a high-speed 4'x7' rotary thermoformer, provide flexibility to scale production as your device moves from clinical trials to commercial manufacturing while maintaining consistent quality and competitive unit pricing.

Yes, we provide comprehensive material certifications, technical data sheets, and manufacturing documentation to support your FDA regulatory filings and quality system requirements. Our material suppliers furnish certificates of compliance for biocompatible resins including chemical composition data, biocompatibility test results (ISO 10993 when applicable), and material safety information. We maintain detailed records of tooling specifications, process parameters, and quality control inspection data that can be incorporated into your device master file (DMF) and design history file (DHF) documentation packages.

Absolutely. Our prototyping approach using modifiable wood or polyurethane tooling is specifically designed to accommodate iterative design refinements common in medical device development. When prototype testing reveals needed adjustments to enclosure geometry, mounting features, ventilation openings, or wall thickness, our CNC machining capabilities allow efficient pattern modifications without costly tooling replacement. Once the design is validated and frozen for production, we transition to durable aluminum casting molds that ensure long-term dimensional consistency and repeatability for commercial manufacturing volumes.

Beyond precision thermoforming, we offer comprehensive secondary fabrication including CNC trimming to exact specifications, precision drilling for mounting hardware and cable pass-throughs, heat bending for complex geometries, ultrasonic welding or adhesive bonding for multi-piece assemblies, threaded insert installation, and custom finishing operations. Our two 5'x10' CNC trimming centers enable assembly-ready part production with clean edges, accurate hole placement, and fastener preparation. This integrated manufacturing approach reduces your supply chain complexity by delivering complete, inspection-ready enclosures rather than requiring multiple vendors for finishing operations.