RT info:eu-repo/semantics/article
T1 Performance analysis of a new hypersonic vitrector system
A1 Stanga, Paulo Eduardo
A1 Pastor Idoate, Salvador
A1 Zambrano, Isaac
A1 Carlin, Paul
A1 McLeod, David
AB AbstractPurpose: 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 < 0.001) in vitreous flow. The 23-gauge GV was only more efficient in water and vitreous removal than 23-gauge HV needle-1 (Port 0.0055) (t-test: P < 0.001). For HV, wall thickness and gauge had no effect on flow rates. Water and vitreous flows showed a direct correlation with increasing aspiration levels and % US power (p<0.05).Conclusions: The HV produced consistent water and vitreous flow rates across the range of US power and aspiration levels tested. Hypersonic vitrectomy may be a promising new alternative to the currently available guillotine-based technologies.
YR 2017
FD 2017
LK https://uvadoc.uva.es/handle/10324/65120
UL https://uvadoc.uva.es/handle/10324/65120
LA eng
NO Stanga PE, Pastor-Idoate S, Zambrano I, Carlin P, McLeod D. Performance analysis of a new hypersonic vitrector system. PLoS One. 2017 Jun 6;12(6):e0178462. doi: 10.1371/journal.pone.0178462. PMID: 28586375; PMCID: PMC5460816.
DS UVaDOC
RD 11-jun-2024