Performance analysis of a new hypersonic vitrector system

Paulo Eduardo Stanga, Salvador Pastor-Idoate, Isaac Zambrano, Paul Carlin and David McLeod

PLOS ONE, 2017, vol. 12, issue 6, 1-15

Abstract: Purpose: To evaluate porcine vitreous flow and water flow rates in a new prototype hypersonic vitrectomy system compared to currently available pneumatic guillotine vitrectors (GVs) systems. Methods: Two vitrectors were tested, a prototype, ultrasound-powered, hypersonic vitrector (HV) and a GV. Porcine vitreous was obtained within 12 to 24 h of sacrifice and kept at 4°C. A vial of vitreous or water was placed on a precision balance and its weight measured before and after the use of each vitrector. Test parameters included changes in aspiration levels, vitrector gauge, cut rates for GVs, % ultrasound (US) power for HVs, and port size for HVs. Data was analysed using linear regression and t-tests. Results: There was no difference in the total average mean water flow between the 25-gauge GV and the 25-gauge HV (t-test: P = 0.363); however, 25-gauge GV was superior (t-test: P

Date: 2017
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0178462

DOI: 10.1371/journal.pone.0178462

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