Publication Type |
Journal Article |
School or College |
School of Medicine |
Department |
Ophthalmology |
Creator |
Olson, Randall J. |
Other Author |
Jin, Yian; Kefalopoulos, Gus; Brinton, Jason |
Title |
Legacy AdvanTec and Sovereign WhiteStar: a wound temperature study |
Date |
2004-05 |
Description |
PURPOSE: To assess the wound temperature of the Sovereign WhiteStar (S-WS) (AMO) and Legacy AdvanTec (L-ADV) (Alcon) phacoemulsification systems. SETTING: John A. Moran Eye Center, Health Sciences Center, University of Utah, Salt Lake City, Utah, USA. METHODS: Phacoemulsification using 20-gauge, 30-degree straight tips with the L-ADV and S-WS systems was performed in fresh cadaver eyes. The power was set at 50%, and aspiration was 12 mL/min; the L-ADV was run at 15 pulses per second (pps) and the S-WS at WS CF (6 milliseconds on, 12 milliseconds off). Temperature was measured at 5-second intervals for 60 seconds using a microthermistor placed in the wound. The phaco tip was angled 30 degrees to increase wound-tissue contact. At 10 seconds, the flow was clamped to simulate occlusion. Five runs, sleeved and unsleeved, were averaged for the phaco tip. RESULTS: The mean temperature was significantly higher with L-ADV than with S-WS (from 10 seconds on in the sleeved condition and from 5 seconds on in the unsleeved condition after the aspiration line was clamped). In 2 of 5 sleeved runs and 4 of 5 unsleeved runs, the L-ADV handpiece decreased power as the temperature increased. One run with the L-ADV with sleeve showed signs of wound burn. There were no signs of wound burn with the S-WS. The highest temperature recorded was 57.5 degrees C with the L-ADV and 38.6 degrees C with the S-WS. Power tests showed L-ADV protected the stroke length and S-WS had constant power except in air where it increased power. CONCLUSIONS: There was less increase in wound temperature over time with the S-WS than with the L-ADV system in sleeved and unsleeved simulated surgery in human eye-bank eyes. Because the ultrasound handpieces respond differently under different load scenarios, meaningful comparisons of pulsing features are difficult to create |
Type |
Text |
Publisher |
Elsevier |
Volume |
30 |
Issue |
5 |
First Page |
1109 |
Last Page |
1113 |
Subject |
Eye Burns; Wound Temperature; Phacoemulsification Systems |
Subject MESH |
Eye Burns; Microsurgery; Phacoemulsification |
Language |
eng |
Bibliographic Citation |
Olson RJ, Jin Y, Kefalopoulos G, Brinton J. (2004). Legacy AdvanTec and Sovereign WhiteStar: a wound temperature study. J Cataract Refract Surg, 30(5), 1109-13 |
Rights Management |
(c) Elsevier DOI: [place doi for article here]; http://dx.doi.org |
Format Medium |
application/pdf |
Identifier |
ir-main,13687 |
ARK |
ark:/87278/s6z03spt |
Setname |
ir_uspace |
ID |
706290 |
Reference URL |
https://collections.lib.utah.edu/ark:/87278/s6z03spt |