Erchonia Zerona® VZ8

The Erchonia Zerona® VZ8 is a low-level laser system designed for non-invasive aesthetic body circumference reduction. It emits 405-nanometer violet light from eight laser diodes to emulsify adipose tissue, allowing fat and lipids to be released into the interstitial space without surgery, pain, or recovery time. Treatment consists of 6 sessions over 2 weeks (3 per week, every other day), with each session lasting 20 minutes.

The VZ8 has 8 laser diodes compared to the predicate Violet ZERONA® Z6 OTC's 6 diodes, resulting in higher total fluence (221 J vs 165 J). Both devices share identical wavelength (405 nm), laser power (23 mW ± 2 mW), energy source (multi-diode collected and line-dispersed), delivery method (floor model with probe head), treatment duration (20 minutes), and mechanism of action. The additional diodes improve laser coverage of the treatment area without changing operational principles.

The device complies with IEC 60601-1:2005+AMD1:2012+AMD2:2020 Edition 3.2 (general medical device safety), IEC 60601-1-2:2014+AMD1:2020 Edition 4.1 (electromagnetic compatibility), and IEC 60825-1:2014 Edition 3.0 (laser product safety). It also meets FDA performance standards for light-emitting products (21 CFR 1040.10 and 1040.11) and follows ISO 14971 risk management framework.

The VZ8 is substantially equivalent because it shares identical wavelength, power, energy source, and treatment protocol with the predicate Z6 OTC. The two additional laser diodes (8 vs 6) represent a quantitative improvement in coverage rather than a fundamental design change. Safety and efficacy of multiple diodes is substantiated by the secondary predicate Erchonia Emerald (10 diodes, K192544), which underwent full clinical trials. Critically, the VZ8's total fluence (221 J) remains well within the safety and efficacy envelope established by the Emerald's 288 J, demonstrating that additional diodes do not introduce new safety concerns.