&lt;p&gt;Optimization of the Oertli CataRhex 3&lt;sup&gt;&amp;reg;&lt;/sup&gt; phacoemulsification machine&lt;/p&gt;

Stutz, Lance A.; Heczko, Joshua; Bird, Brian A; Thomson, Rhett S.; Bernhisel, Ashlie; Barlow, William R.; Zaugg, Brian; Olson, Randall J.; Pettey, Jeff H.

doi:10.2147/opth.s196281

Cited by 5 publications

(6 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Our findings support the conclusion that optimal efficiency is achieved with the 19G gauge tip and is congruent with the mechanics of the CataRhex3. 8 , 9 The Oertli system utilizes longitudinal ultrasound (US) to emulsify the lens, so as the gauge of the tip increases, the surface area making contact with the lens nucleus increases. This allows for greater transfer of energy to the lens.…”

Section: Discussionmentioning

confidence: 99%

“…The Oertli CataRhex 3 ® (Oertli) phaco platform has a small profile, weighing only 5 kg, with dimensions of 22 × 24 x 18.3 cm and voltage capabilities between 100 and 240. 8 , 9 …”

Section: Introductionmentioning

confidence: 99%

“…This paper is a key evaluation in our series to systematically evaluate the optimum settings and provide guidance for surgeons. 9 , 37 It builds on previous studies that establish differences between efficiency and chatter using horizontal and longitudinal ultrasound with different gauged tips, efficiency being the shortest time possible to groove the lens. 36 This study evaluates the efficiency and chatter events between the three tip diameters available on Oertli platform.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Optimization of Phacoemulsification Tip Gauge on the Oertli CataRhex3 in an in vitro Setting

Peterson

Christensen

Cooper

et al. 2022

OPTH

Self Cite

View full text Add to dashboard Cite

Purpose To evaluate the effect of each of the tip sizes available for the Oertli CataRhex3 ® phacoemulsification machine on efficiency. Methods Porcine lenses were fixed in formalin for 2 hours, then cut into 3.0 mm cubes. We studied three Oertli tips, all of which had a 30-degree bevel: easyTip 2.2 mm (20G), easyTip 2.8 mm (19G), and CO-MICS (21G). For the 19G and 20G tips, vacuum was set at 600 mmHg, irrigation rate at 50 mL/min, continuous power 70%, and bottle height 85 cm. For the 21G tip, vacuum was set at 450 mmHg; irrigation and power settings were identical to those used for the easyTip tips. We measured time to removal and chatter events to determine efficiency. Results Results from 20 trials for each tip showed that the larger the gauge size, the more quickly lens fragments were removed. Chatter events demonstrated an increasing trend with smaller tip gauge. The 19G tip used an average time to fragment removal of 2.8 seconds; the 20G, 3.2 seconds; and the 21G, 4.6 seconds. Increasing tip diameter from 21G to 20G decreased emulsification time by 33% (P = 0.02). Increasing the diameter from 21G to 19G further decreased time to emulsification by 42% (P = 0.003). The 21G tip had a mean 1.4 events/cube; 20G, 0.35 events; and 19G, 0.1 events. Differences in mean chatter events for each tip were each statistically significant. Conclusion These data suggest that when evaluated by chatter events and emulsification time, the 2.8 mm (19G) easyTip proves to have greatest efficiency.

show abstract

Section: Discussionmentioning

confidence: 99%

“…The Oertli CataRhex 3 ® (Oertli) phaco platform has a small profile, weighing only 5 kg, with dimensions of 22 × 24 x 18.3 cm and voltage capabilities between 100 and 240. 8 , 9 …”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Optimization of Phacoemulsification Tip Gauge on the Oertli CataRhex3 in an in vitro Setting

Peterson

Christensen

Cooper

et al. 2022

OPTH

Self Cite

View full text Add to dashboard Cite

show abstract

“…In order to understand these trends in the data, it is important to keep in mind the physics of the peristaltic pump used in the Oertli. 10 In this system, vacuum is generated by “milking” fluid and air out of the closed space in the tubing system. Additionally, the infusion flow rate is controlled by adjusting the bottle height.…”

Section: Discussionmentioning

confidence: 99%

Measurement of Phacoemulsification Vacuum Pressure in the Oertli CataRhex3

Peterson¹,

Cooper²,

Ungricht³

et al. 2022

OPTH

Self Cite

View full text Add to dashboard Cite

Purpose To determine the actual vacuum pressure generated by the Oertli CataRhex 3 ® (Oertli), using an external measuring system. Methods The effective vacuum pressure created by the Oertli was measured with a pressure device that was continuous with the vacuum tubing system while closed to the external environment. Measurements were taken with the machine set to 300 and 500 mmHg at flow rates of 20, 35, and 50 mL/min and at bottle heights of 60, 80, and 100 cm. Pressures were recorded after the foot pedal was depressed to vacuum setting (second position), and the pressure was allowed to stabilize. Subsequently, it was compared to the pressure value displayed by the machine. Results Externally measured vacuum pressure was on average 13.02% greater (39.05 mmHg) than displayed vacuum pressure at 300 mmHg ( P < 0.005) and 8.60% greater (42.98 mmHg) than displayed vacuum at 500 mmHg ( P < 0.005). The average difference between displayed and measured pressure increased with increasing bottle heights. Conclusion On average, the vacuum pressure generated in the Oertli was found to be significantly higher than the machine’s reading when the machine was set at 300 mmHg and 500 mmHg. Adjusting vacuum had variable effects on the measured versus displayed pressure readings.

show abstract

“…Another study aiming to optimize the CataRhex3 (Oertli Instrumente AG, Berneck, Switzerland), a portable phacoemulsification machine that is advantageous for travel to remote and/or underserved regions, showed that efficiency increased with longitudinal power up to 80%. Past 80%, no further difference was noted [2]. Often, the loss of efficiency at higher powers can be attributed to an increase in chatter, as measured by the number of times a fragment of the lens bounces from the tip.…”

Section: Power Controlmentioning

confidence: 99%

Efficient use of ultrasound in cataract surgery

Chung

Afshari

2021

Current Opinion in Ophthalmology

View full text Add to dashboard Cite

Purpose of reviewModern phacoemulsification machines apply ultrasound through a variety of settings and parameters to remove a cataract. Using these new technologies efficiently is critical for both reducing surgical times and improving postoperative outcomes. The present article reviews recent findings in phacodynamics to explore the optimum use of ultrasound in cataract surgery. Recent findingsIn studies seeking to determine the optimum parameters in both fluidics and power, increased power and aspiration does not necessarily equate to more efficiency. New developments, such as torsional ultrasound, micropulse, and burst mode have shown increased efficiency in randomized control trials and in-vitro compared with conventional ultrasound. Regarding vacuums, the venturi pump has demonstrated greater efficiency compared with the peristaltic pump. We also explore other parameters, such as chamber pressure and tip selection. Meta-analyses on femtosecond-laser assisted cataract surgery (FLACS) have shown similar long-term visual outcomes compared to conventional cataract surgery.

show abstract

<p>Optimization of the Oertli CataRhex 3<sup>®</sup> phacoemulsification machine</p>

Cited by 5 publications

References 18 publications

Optimization of Phacoemulsification Tip Gauge on the Oertli CataRhex3 in an in vitro Setting

Optimization of Phacoemulsification Tip Gauge on the Oertli CataRhex3 in an in vitro Setting

Measurement of Phacoemulsification Vacuum Pressure in the Oertli CataRhex3

Efficient use of ultrasound in cataract surgery

Contact Info

Product

Resources

About