{
    "title": "Life-Vac -- Anti-Choking Device",
    "inventor_name": "Arthur LIH",
    "publication_year": 2014,
    "device_name": "LifeVac",
    "goal": "Rescue choking victims by removing obstructing food or objects from the airway.",
    "problem_addressed": "Airway obstruction caused by choking.",
    "concept_summary": "A non-powered, portable suction apparatus with a patented one-way valve that creates a strong negative pressure to pull lodged objects upward, providing a safe and effective alternative when standard choking protocols fail.",
    "detailed_description": "LifeVac consists of a mask fitted with a patented valve that blocks air from exiting through the mask, establishing a one-way suction path. When the operator manually compresses the device, a negative pressure is generated that is three times greater than the highest recorded choke pressure. The suction duration is brief, minimizing risk while effectively clearing the airway. The device is intended for single-patient use, requires no prescription, and is marketed as a portable emergency aid.",
    "category": "Medical & Dental Technologies",
    "principles": [
        "Negative pressure suction",
        "One-way valve",
        "Manual actuation"
    ],
    "scientific_domains": [
        "Medicine",
        "Emergency Medicine",
        "Physiology"
    ],
    "mechanisms_of_action": [
        "Creates a pressure differential to draw objects upward",
        "Prevents downward airflow through valve"
    ],
    "materials": [
        "Plastic",
        "Rubber",
        "Metal"
    ],
    "energy_sources": [],
    "inputs": [
        "Manual compression (hand pump)",
        "Airway obstruction"
    ],
    "outputs": [
        "Suction pressure",
        "Removal of lodged object"
    ],
    "claimed_performance": "Negative pressure generated is three times greater than the highest recorded choke pressure; suction duration is minimal, making the device safe and effective.",
    "experimental_evidence": "Demonstration video showing the device removing an obstruction from a choking victim.",
    "replication_status": null,
    "keywords": [
        "anti-choking",
        "portable suction",
        "medical device",
        "airway clearance"
    ],
    "related_technologies": [
        "Heimlich maneuver",
        "Manual suction devices",
        "Airway clearance tools"
    ],
    "controversy_level": "low",
    "confidence_score": 0.9,
    "practicability_score": 0.8,
    "fringe_score": 0.1,
    "evidence_strength": 0.5,
    "risk_score": 0.2,
    "trl_estimate": 7,
    "source_urls": [
        "http://www.keelynet.com/news/120314c.html",
        "http://www.myfoxtampabay.com/story/27330196/2014/11/07/invention-promises-to-rescue-choking-victims",
        "https://lifevac.net/",
        "https://www.youtube.com/watch?v=DdQP-UNClJM"
    ],
    "organizations": [],
    "applications": [
        "Emergency airway clearance",
        "First-aid response to choking"
    ],
    "limitations": [
        "Requires manual operation",
        "Effectiveness may vary with size/type of obstruction",
        "Dependence on correct valve function"
    ],
    "open_questions": [
        "Long-term durability of the valve mechanism",
        "Efficacy across different age groups and obstruction types",
        "Potential for integration with other emergency protocols"
    ],
    "red_flags": [],
    "evidence_quotes": [
        "LifeVac is designed with a patented valve to prevent any air from exiting through the mask.",
        "The negative pressure generated by the force of the suction is 3 times greater than the highest recorded choke pressure.",
        "LifeVac is a non-powered single patient portable suction apparatus developed for resuscitating a choking victim when standard ACLS protocol has been followed without success.",
        "No prescription required.",
        "The duration of suction is minimal so LifeVac is safe and effective."
    ]
}