Surgical Disposables
Single-Use Surgical Instrument Housing
A single-use instrument housing carries the drive train, trigger, and electronics of a disposable surgical tool. It needs high stiffness-to-weight, impact resistance against drops, and a durable soft-touch grip — all stable through gamma sterilization at single-use dose.
Sterilization: GammaEthylene OxideE-Beam
Component material package
A recommended grade per component, drawn from the Nexeo catalog. Recommendations are engineering assessments; a cited property links the choice to data we hold for that grade.
| Component | Recommended grade | Why |
|---|---|---|
Structural housing Load-bearing clamshell enclosure | Bayblend T65 XF Polycarbonate Blend (PC-ABS) | A PC-ABS blend balances stiffness, impact, and moldability for thin-wall structural housings and takes a clean cosmetic surface. |
Trigger / lever High-cycle actuation lever | Zytel 101L NC010 Polyamide (PA66) | A PA66 gives the fatigue strength and wear resistance a repeatedly actuated lever needs. |
Soft-touch overmold grip Ergonomic non-slip grip surface | THERMOLAST M TM5MED Thermoplastic Elastomer (TPE) | A medical TPE overmolds onto rigid substrates and provides the soft-touch grip surface without a secondary assembly step. |
Gear / cam Low-friction motion transfer | Delrin 527UV Polyoxymethylene (POM) | An acetal (POM) provides the low friction and dimensional stability required for gears and cams. |
Producer datasheetNexeo Applications Engineering assessmentAwaiting datasheetNot published by producer
Key regulatory requirements
- ISO 10993-1 (limited/surface contact)
- USP Class VI on patient-contacting surfaces
- ISO 11137 gamma dose validation for single-use
Engineering watch-outs
- Acetal (POM) is sensitive to gamma and repeated radiation — validate dose and confirm single-use only.
- Confirm TPE-to-substrate adhesion for the specific rigid grade chosen; not all TPE/substrate pairs bond.
- PC-ABS is a none-contact structural pick here; do not extend it to fluid contact without re-evaluation.
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