(269 days)
The Liberator wheelchair will be used for paraplegics to afford them the opportunity to be in a standing position while moving around in the wheelchair. It also provides the opportunity for better circulation by allowing the user to change positions as often as the user wants which reduces the risk of skin excoriation.
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The provided text is a 510(k) clearance letter from the FDA for "The Liberator" wheelchair (K984391). It primarily addresses regulatory approval and an "Indications for Use" statement.
Crucially, this document does not contain any information about acceptance criteria for device performance, the results of a study proving those criteria were met, or details about ground truth establishment, expert adjudication, or sample sizes for training or test sets.
The document states: "We have reviewed your Section 510(k) notification of intent to market the device referenced above and we have determined the device is substantially equivalent... to devices marketed in interstate commerce prior to May 28, 1976." This implies that the device's performance was likely evaluated by comparing it to an existing predicate device rather than undergoing a new, detailed performance study with defined acceptance criteria for a novel technology.
Therefore, I cannot fulfill your request for the specific information regarding acceptance criteria and study details because it is not present in the provided text.
To answer your request, I would need a different type of document, such as a clinical study report, a performance validation report, or a detailed submission summary that includes methodologies and results for device testing.
§ 890.3900 Standup wheelchair.
(a)
Identification. A standup wheelchair is a device with wheels that is intended for medical purposes to provide mobility to persons restricted to a sitting position. The device incorporates an external manually controlled mechanical system that is intended to raise a paraplegic to an upright position by means of an elevating seat.(b)
Classification. Class II (performance standards).