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The UniVit™ HE and UniVit™ UHS are single use (disposable) products intended for use in both anterior and posterior segment (vitrectomy) ophthalmic surgeries when used with a pneumatically-driven vitrectomy system or phacoemulsification system that has a pneumatically-driven vitrectomy module.

The operation of a vitreous cutter is simple. An air pulse pushes down the diaphragm located inside the vitrectomy probe, leading the port to a closed position (the guillotine movement); at the same time, a spring is compressed and forces the diaphragm back to the open port position. In this submission VisionCare Devices is submitting two new models of vitreous cutter. The first model is the UniVit™ HE, which stands for Universal Vitcutter High Efficiency. The UniVit HE is offered in gauge sizes of 20, 23, 25, and 27). The UniVit™ HE™ operates up to 11,000 CPM depending upon vitrectorny system selection. The second model offered, in this submission, is the UniVit™ UHS™, which stands for Universal Vitcutter Ultra High Speed. The UniVit UHS is offered gauge sizes of 23, 25, and 27. The UniVit operates up to 11,000 CPM depending upon vitrectory system selection. The inner cutter has a port cut into it which allows for cutting forward and backwards; this in effect doubles the cut rate to 22,000 CPM.