{"hq_id":"hq-p-spe-000010","name":"Polypropylene Hernia Mesh","category":{"primary":"specialty","secondary":"","tags":[]},"product_tier":"SPE","overall_risk_level":"high","description":"In vivo PP oxidative degradation; mesh contraction up to 30%; migration and organ erosion; 510(k) pathway, no clinical trials pre-approval Key materials: Polypropylene Hernia Mesh and Pelvic Floor Mesh (In Vivo Polymer Degradation).","synthesis":{"derived_risk_level":"moderate","synthesis_confidence":0.648,"synthesis_method":"compound_composition","context_used":"human_pregnant","context_source":"product_users","exposure_modifier":1.15,"vulnerability_escalated":false,"escalation_reason":null,"compounds_resolved":1,"compounds_total":1,"synthesis_date":"2026-05-09","synthesis_version":"1.2.0","methodology_note":"exposure_modifier and adjusted_magnitude are computed from ALETHEIA-calibrated heuristics (route × duration × frequency multipliers, clamped to [0.5, 1.4]). Multipliers are directionally informed by EPA Exposure Factors Handbook (2011) and CalEPA OEHHA but are not regulatory consensus. See /api/methodology for full disclosure."},"hazard_summary":{"sensitive_populations":"pregnant women","overall_risk":"high","primary_concerns":["Overall risk level: high."],"exposure_routes":""},"exposure":{"routes":["dermal"],"contact_types":["dermal","internal_reproductive"],"users":["adult","pregnant"],"duration":"hours","frequency":"daily","scenarios":["Exposure during pregnancy with potential fetal transfer"],"notes":"Exposure to Polypropylene Hernia Mesh occurs via dermal. Pregnant individuals face additional risk from placental transfer of absorbed compounds to the developing fetus."},"consumer_guidance":{"red_flags":[{"indicator":"Identified safety concern","meaning":"Overall risk level: high.","action":"Review safety data; follow use guidelines; consider alternatives"},{"indicator":"Overall risk level: high","meaning":"Multiple hazard pathways identified for this product category","action":"Limit exposure duration and frequency; use protective measures where applicable"}],"green_flags":[{"indicator":"Third-party safety tested","meaning":"Independent laboratory verification of safety claims","verification":"Check for recognized certification marks and test reports"}],"what_to_ask":[{"question":"What safety testing has this product undergone?","why_it_matters":"Third-party testing provides independent verification of safety claims"}],"alternatives":[{"name":"Biologic mesh (human or animal-derived)","notes":"Reduces infection risk; better for contaminated fields but higher cost"},{"name":"Absorbable synthetic mesh","notes":"Lower chronic inflammation; suitable for clean-contaminated cases"},{"name":"Open primary repair (non-mesh)","notes":"Eliminates foreign body reaction risk; appropriate for small uncomplicated hernias"}],"notes":null},"regulatory":{"applicable_regulations":[{"jurisdiction":"USA","regulation":"FDA 21 CFR Parts 800–898 (Medical Devices)","citation":null,"requirements":"Device classification (Class I/II/III). Biocompatibility testing per ISO 10993. Good Manufacturing Practice (GMP) under 21 CFR Part 820.","compliance_status":null,"effective_date":null,"enforcing_agency":null,"penalties":null,"source_ref":null},{"jurisdiction":"EU","regulation":"Medical Devices Regulation (EU) 2017/745 (MDR)","citation":null,"requirements":"CE marking. Clinical evaluation. Unique Device Identification (UDI). CMR/EDC substance restrictions unless justified by risk-benefit analysis.","compliance_status":null,"effective_date":null,"enforcing_agency":null,"penalties":null,"source_ref":null}],"certifications":[{"name":"ISO 10993","issuer":"ISO","standard":"ISO 10993 Biological Evaluation of Medical Devices","scope":"Biocompatibility testing — cytotoxicity, sensitization, irritation, systemic toxicity"},{"name":"FDA 510(k)/PMA","issuer":"FDA","standard":"21 CFR Parts 860-892","scope":"Medical device clearance/approval including material biocompatibility"}],"labeling":{"required_disclosures":[],"prop65_warning":{"required":null,"chemicals":[],"endpoint":null,"notes":null},"ghs_labeling":{"required":null,"signal_word":null,"pictograms":[],"hazard_statements":[],"notes":null},"hidden_ingredients":{"trade_secret_protected":null,"categories_hidden":[],"estimated_count":null,"known_concerns":null,"notes":null},"notes":null},"recalls":[],"regulatory_gap":null,"notes":null},"lifecycle":{"recyclable":false,"disposal_guidance":"Medical waste disposal; sharps containers; do not place in regular trash","hazardous_waste":true,"expected_lifespan":"disposable"},"formulation":{"form":"composite_material","key_ingredients":[{"hq_id":null,"name":"Primary component","role":"base_material","concentration_pct":"70-80"},{"hq_id":null,"name":"Secondary component","role":"additive","concentration_pct":"10-20"},{"hq_id":null,"name":"Filler or coating","role":"filler","concentration_pct":"5-10"}],"certifications":[]},"materials":{"common":[{"material_id":"hq-m-str-000093","material_name":"Polypropylene Hernia Mesh and Pelvic Floor Mesh (In Vivo Polymer Degradation)","component":null,"prevalence":"common"}],"concerning":[{"material_id":"hq-m-str-000093","concern":"Polypropylene oxidative degradation in vivo: PP undergoes lipid peroxidation in tissue environment; carbonyl leachates form carcinogenic, mutagenic compounds; chronic inflammation and tissue damage","compounds_of_concern":[],"source_refs":[]},{"material_id":"hq-m-str-000093","concern":"Mesh contraction up to 30%: as oxidation progresses, mesh shrinks, creating mechanical stress and migration risk; migration leads to organ erosion (bladder, bowel, vagina)","compounds_of_concern":[],"source_refs":[]},{"material_id":"hq-m-str-000093","concern":"FDA Class I recall of Bard Davol Composix Kugel mesh (2012); Class II voluntary withdrawal of Ethicon Physiomesh (2016, following elevated hernia repair revision rates); transvaginal pelvic mesh class action MDL: ~35,000 plaintiffs (Bard), $184M verdict 2021; Ethicon/J&J MDL: $800M+ settlements","compounds_of_concern":[],"source_refs":[]},{"material_id":"hq-m-str-000093","concern":"510(k) predicate device pathway: polypropylene mesh cleared as Class II device based on comparison to previously cleared device; no clinical trials required; no in vivo degradation studies conducted prior to market clearance; widespread clinical use for 10+ years before FDA demanded clinical evidence (reclassification to Class III PMA in 2016 for transvaginal mesh)","compounds_of_concern":[],"source_refs":[]},{"material_id":"hq-m-str-000093","concern":"Potential contaminant: Oxidative degradation microparticles","compounds_of_concern":[],"source_refs":[]}],"preferred":[]},"compound_composition":[{"hq_id":"hq-c-org-000688","compound_name":"Polypropylene (PP)","role":"base","typical_concentration":null}],"identifiers":{"common_names":["polypropylene hernia mesh"],"brands":["Bard Davol Composix (recalled 2012)","Ethicon Physiomesh (withdrawn 2016)","Atrium C-QUR","Gore Bio-A"],"aliases":[],"manufacturer":null},"brand_examples":[{"brand":"Generic Mass-Market Brand A","manufacturer":"Consumer Products Corporation","market_position":"mass_market","notable":"Widely available mass-market option"},{"brand":"Generic Mass-Market Brand B","manufacturer":"Consumer Goods Ltd","market_position":"mass_market","notable":"Popular budget alternative"},{"brand":"Premium Brand A","manufacturer":"Premium Consumer Inc","market_position":"premium","notable":"Upscale premium positioning"},{"brand":"Professional Brand","manufacturer":"Professional Products Co","market_position":"professional","notable":"Professional/salon-grade option"},{"brand":"Specialty Eco-Brand","manufacturer":"Natural Products Ltd","market_position":"premium","notable":"Sustainable/natural product line"}],"brand_examples_disclaimer":"Representative branded products of this category. Concerning ingredients listed in materials.concerning[] apply to the category, not necessarily to every named brand. Specific formulations vary by SKU and may have changed since this record was written; consult the brand's current ingredient label before drawing brand-level conclusions.","sources":[{"id":"src_001","type":"regulatory","title":"FDA Class I Recall: Bard Davol Composix Kugel Mesh (2012); Ethicon Physiomesh Voluntary Withdrawal (2016)","year":2016,"inherited_from":"hq-m-str-000093"},{"id":"src_002","type":"journal","title":"Polypropylene Mesh Oxidative Degradation In Vivo: Carbonyl Formation and Inflammatory Response","year":2018,"inherited_from":"hq-m-str-000093"},{"id":"src_003","type":"regulatory","title":"FDA: Reclassification of Transvaginal Pelvic Mesh to Class III PMA (2016)","year":2016,"inherited_from":"hq-m-str-000093"},{"id":"src_004","type":"court","title":"Bard Hernia Mesh MDL: 35,000+ Plaintiffs; $184M Verdict (2021); Ethicon J&J Settlement: $800M+ (2021–2024)","year":2021,"inherited_from":"hq-m-str-000093"},{"id":"src_005","type":"journal","title":"Mesh Contraction and Migration: Long-Term Clinical Outcomes and Oxidative Degradation Mechanism","year":2020,"inherited_from":"hq-m-str-000093"}],"meta":{"schema_version":"4.0.0","last_updated":"2026-03-25","timestamp":"2026-05-14T01:24:28.272Z"}}