Dataset Information

Performance analysis of a new hypersonic vitrector system.

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 < 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.

SUBMITTER: Stanga PE

PROVIDER: S-EPMC5460816 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature

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Publications

Performance analysis of a new hypersonic vitrector system.

Stanga Paulo Eduardo PE Pastor-Idoate Salvador S Zambrano Isaac I Carlin Paul P McLeod David D

PloS one 20170606 6

<h4>Purpose</h4>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.<h4>Methods</h4>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 o ...[more]

PMID: 28586375

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Dataset Information

Performance analysis of a new hypersonic vitrector system.

Purpose

Methods

Results

Conclusions

Publications

Performance analysis of a new hypersonic vitrector system.

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