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EMS is used for:

• Relaxation of muscle spasms
• Prevention or retardation of disuse atrophy
• Increasing local blood circulation
• Muscle re-education
• Maintaining or increasing range of motion
• Immediate postsurgical stimulation of calf muscles to prevent venous thrombosis

TENS is used for:

• Symptomatic relief and management of chronic, intractable pain
• Post-surgical acute pain
• Post-trauma acute pain

EVE Synergy has Synergy handpiece (1EA), Pro handpiece (2EA), Micro cable, Tip (Ball type, T type, COMB type) and Power adaptor & cable.

EVE Synergy has Synergy mode and Pro mode.

Synergy mode has radio frequency and low frequency functions using a synergy handpiece. The Synergy handpiece has a temperature sensor, so the output is automatically turned off when the skin surface temperature exceeds 43℃.

Pro mode has low frequency function that uses the Pro handpiece with tip.

It should be noted that the device has radio frequency (RF Mode) indicated for relief of minor muscle aches and pain, relief of muscle spasm, temporary improvement of local blood circulation. This RF mode was previously reviewed by the FDA under K212253 and was cleared under regulation 21 CFR 878.4400 (Product code PBX). In the subject submission, there are no changes being proposed related to the RF Mode, and, hence, the review of the RF Mode is not within the scope of the subject 510(k) submission.

The provided text is a 510(k) clearance letter and an accompanying 510(k) summary for the EVE Synergy (EVE-20M) device. This document focuses on demonstrating substantial equivalence to previously cleared predicate devices, rather than proving the device meets specific acceptance criteria through a comparative effectiveness study involving AI assistance or human-in-the-loop performance.

Therefore, many of the requested details regarding acceptance criteria for AI performance, specific study designs (MRMC, standalone), ground truth establishment for AI training/test sets, and sample sizes for these, are not present in this type of regulatory submission. This document primarily describes the physical and electrical characteristics of the device and compares them to predicate devices, along with standard electrical safety, EMC, and software validation testing.

Here's a breakdown of the requested information based on the provided text, highlighting what is present and what is not:

1. A table of acceptance criteria and the reported device performance

The document does not present "acceptance criteria" in the traditional sense of a specific performance metric (like accuracy, sensitivity, specificity) for a clinical outcome or an AI model's performance. Instead, it demonstrates compliance with safety and performance standards and similarity to predicate devices.

The "acceptance criteria" are implicitly met by showing:

• Compliance with various IEC standards (IEC 60601-1, IEC 60601-1-2, IEC 60601-2-10, IEC 62304) for electrical safety, EMC, and software.
• The device's technical specifications (e.g., output voltage, current, pulse width, frequency, power density) are comparable to or within the safe limits established by the predicate devices.

Table of Performance (extracted from comparison tables):

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