{
    "title": "Tilapia Skin Burn Bandage",
    "inventor_name": "Edmar L. Maciel",
    "publication_year": 2017,
    "device_name": "Tilapia Skin Dressing",
    "goal": "Provide an effective, low-cost occlusive biological dressing for second- and third-degree burns to accelerate healing, reduce pain and decrease dressing changes.",
    "problem_addressed": "Shortage of human, pig and synthetic skin substitutes for burn patients in Brazil, leading to reliance on gauze and silver sulfadiazine creams.",
    "concept_summary": "Sterilized tilapia skin, rich in type I and III collagen, is processed with glycerol-based solutions and antimicrobial agents, then applied directly to burn wounds as an occlusive dressing that promotes faster healing, provides a barrier to infection and relieves pain.",
    "detailed_description": "The invention describes a multi-stage processing method for tilapia skin: removal, washing, sequential chlorhexidine treatments, glycerol-saline-antibiotic immersion (50 %, 75 %, then 99 % glycerol), optional gamma-radiation sterilization, and final packaging. The treated skin retains high collagen content and tensile strength, can be stored up to two years, and is applied to burns as an occlusive dressing that adheres to the wound, reduces exudate loss, prevents bacterial invasion and accelerates dermal matrix repair.",
    "category": "Medical & Dental Technologies",
    "principles": [
        "Collagen scaffold for tissue regeneration",
        "Occlusive barrier to maintain moisture",
        "Antimicrobial protection via chemical sterilization and gamma radiation",
        "Biocompatibility of fish skin"
    ],
    "scientific_domains": [
        "Medicine",
        "Biology",
        "Materials Science"
    ],
    "mechanisms_of_action": [
        "Collagen type I promotes dermal matrix repair",
        "Barrier function prevents infection and fluid loss",
        "Moisture retention accelerates epithelialization",
        "Pain relief through protective covering"
    ],
    "materials": [
        "Tilapia skin",
        "Glycerol",
        "Physiological saline (0.9% NaCl)",
        "Chlorhexidine gluconate",
        "Penicillin",
        "Streptomycin",
        "Fungicide"
    ],
    "energy_sources": [],
    "inputs": [
        "Fresh tilapia skins",
        "Sterile water",
        "Chlorhexidine solution",
        "Glycerol-saline-antibiotic solutions",
        "Gamma radiation (Cobalt-60) when needed"
    ],
    "outputs": [
        "Sterilized tilapia skin dressing",
        "Accelerated wound healing",
        "Reduced pain and dressing changes"
    ],
    "claimed_performance": "Healing time reduced by several days; fewer dressing changes compared with gauze-silver sulfadiazine; pain relief reported by patients.",
    "experimental_evidence": "Clinical trial in Fortaleza, Brazil with patients receiving tilapia skin dressings; anecdotal reports of faster healing and pain reduction; histological studies comparing collagen content with human and pig skin.",
    "replication_status": "Clinical trial ongoing; no independent large-scale replication reported.",
    "keywords": [
        "tilapia skin",
        "burn dressing",
        "collagen",
        "occlusive dressing",
        "clinical trial",
        "sterilization"
    ],
    "related_technologies": [
        "Pig skin allografts",
        "Human skin allografts",
        "Synthetic burn dressings",
        "Silver sulfadiazine cream"
    ],
    "controversy_level": "low",
    "confidence_score": 0.9,
    "practicability_score": 0.7,
    "fringe_score": 0.1,
    "evidence_strength": 0.6,
    "risk_score": 0.2,
    "trl_estimate": 6,
    "source_urls": [
        "http://www.pbs.org/newshour/rundown/brazilian-city-uses-tilapia-fish-skin-treat-burn-victims/",
        "https://www.statnews.com/2017/03/02/brazil-tilapia-skin-burns/",
        "https://www.youtube.com/watch?v=5LOG7-2bNhQ"
    ],
    "organizations": [
        "Federal University of Ceará",
        "Frota Institute (Fortaleza)",
        "World Intellectual Property Organization (WO2017035615)"
    ],
    "applications": [
        "Burn wound care",
        "Chronic wound management",
        "Low-cost dressings for developing regions"
    ],
    "limitations": [
        "Requires clean-room and sterilization infrastructure",
        "Regulatory approval pending in many countries",
        "Shelf life limited to two years under refrigeration",
        "Limited quantitative clinical data"
    ],
    "open_questions": [
        "Long-term outcomes compared with standard grafts",
        "Cost-effectiveness at scale",
        "Potential immunogenic reactions in diverse populations",
        "Scalability of processing for mass production"
    ],
    "red_flags": [],
    "evidence_quotes": [
        "The treatment, which is part of a clinical trial, is said to reduce healing time by several days.",
        "In patients with superficial second-degree burns, the doctors apply the fish skin and leave it until the patient scars naturally.",
        "The tilapia treatment also cuts down healing time by up to several days and reduces the use of pain medication, Maciel said.",
        "The skin can be used as an occlusive biological dressing for skin injuries, such as burn and acute or chronic wounds.",
        "The initial batches of tilapia skin were studied and prepared... once cleaned and treated, they can last for up to two years."
    ]
}