Evaluation of a new disposable flexible ureterorenoscope and comparison to an established disposable flexible ureterorenoscope: a prospective, observational study

Patterson, Kenneth; Yap, Lee Chien; Elamin, Mutaz; MacCraith, Eoin; Muheilan, Muheilan; Sharif, Ashraf; McGuinness, Gerard; D’Arcy, Frank; Brady, Ciaran; Hennessey, Derek

doi:10.1007/s11255-020-02727-0

Cited by 3 publications

(3 citation statements)

References 17 publications

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“…The first commercially available, disposable, digital, flexible ureteroscope for accessing the upper urinary tract and treating nephrolithiasis was LithoVue (Boston Scientific, Marlborough, MA, USA) [ 4 ]. Since its launch in late 2015, a few studies have demonstrated that the LithoVue scope and subsequent single-use ureteroscopes have comparable or superior efficacy to reusable ureteroscopes [ 8 , 14 , 15 ].…”

Section: Discussionmentioning

confidence: 99%

In vitro Comparison of the Mechanical and Optical Characteristics of 5 Disposable Flexible Ureteroscopes

Phromprathum,

Srinualnad,

Leewansangtong

et al. 2024

Urol Int

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Introduction: Disposable (single-use) flexible ureteroscopes are alternatives to reusable ureteroscopes. With their superior surgical efficacy and safety in the presence of upper urinary calculi, disposable ureteroscopes aim to overcome the main limitations of conventional reusable ureteroscopes. However, studies on the performance of the most recently developed models of single-use flexible ureteroscopes are scarce. This study aimed to compare the in vitro performance of several recently introduced, single-use, flexible ureteroscopes. Methods: Five disposable flexible ureteroscopes were tested in vitro to evaluate their mechanical and optical characteristics. To this end, their degrees of deflection, irrigation flow rates, and image qualities were investigated. The models examined were Innovex US31-B12, OTU-100RR, Redpine RP-U-C12, Sciavita SUV-2A-B, and Seplou URS3016E. Their performance was also compared with that of a reusable flexible ureteroscope, Olympus URV-F. Results: The OTU device had the highest degrees of deflection and the smallest loop diameter of the disposable ureteroscopes. The single-use ureteroscopes had identical image resolutions at a distance of 1 cm. The Innovex and Redpine devices had the best color representation. Conclusions: Of the tested disposable ureteroscopes, the OTU device had the best mechanical attributes, given its small loop diameter, high deflection angles, and low irrigation flow loss. As to their optical properties, the resolutions of all 5 single-use models were identical at an image distance of 1 cm.

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Section: Discussionmentioning

confidence: 99%

In vitro Comparison of the Mechanical and Optical Characteristics of 5 Disposable Flexible Ureteroscopes

Phromprathum,

Srinualnad,

Leewansangtong

et al. 2024

Urol Int

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“…Although to date there are no studies comparing all the available disposable fURSs on the market, several studies have been conducted to compare the characteristics of these devices [19,20,[27][28][29]. In terms of image quality and maneuverability, Patil et al and Winship et al observed no significant differences between Lithovue and Uscope 3022A [19,27].…”

Section: Discussionmentioning

confidence: 99%

“…Uscope 3022A was also compared with its slimmest counterpart (Uscope 3033A), revealing comparable intraoperative quality of vision and deflection, both with and without accessory instruments in the working channel [20]. Other studies have recently been conducted to assess the technical features of EU-scope (Innovex AnQing Medical), which have demonstrated its comparable image resolution and maneuverability to those of LithoVue [29].…”

Section: Discussionmentioning

confidence: 99%

Single-Use Flexible Ureteroscopes: How Difficult Is It Today to Stay Up to Date? A Pictorial Review of Instruments Available in Europe in 2023

Vaccaro,

Lorusso,

Palmisano

et al. 2023

JCM

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The invention of the flexible ureteroscope (fURS) and its subsequent spread have revolutionized the surgical management of urolithiasis and upper tract urothelial carcinoma (UTUC). During the last few years, single-use flexible ureteroscopes (su-fURSs) have been developed to improve the limitations of reusable fURSs, namely their cost, durability and risk of device contamination. Since the introduction of the first fully disposable digital fURS, several su-fURSs have been developed by various manufacturers. In this pictorial review, we combined the different physical and technical features of su-fURSs currently available on the market with Food and Drug Administration (FDA) and European Conformity (CE) approval, in order to help surgeons choose the appropriate device according to each case requirement and personal preferences. To the best of our knowledge, 17 su-fURSs with CE and FDA approval have been developed to date.

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LithoVue Elite Compared With Single-Use and Reusable Ureteroscopes: A Bench and Human Cadaver Study

et al. 2023

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Purpose: To compare the attributes of the next-generation LithoVue Elite (LVE, Boston Scientific Corporation) with current state-of-the-art single-use and reusable flexible ureteroscopes. Methods: LithoVue Elite is the latest single-use flexible ureteroscope with improved functionality and a novel ability to measure intrarenal pressure. In this study, we compare LVE with 3 single-use ureteroscopes (Pusen, WiScope, and Anqing) and 1 reusable ureteroscope (Olympus). A bench model was used to measure the physical characteristics (tip deflection and irrigation) and image quality (resolution, color accuracy, field of view, and latency). A human cadaveric model was used to score the maneuverability and ergonomics. This abstract shows the least square means from multiway ANOVAs used for analysis. Results: The ureteroscopes showed a tip deflection ranging from 243° to 306° with LVE at 279°. The irrigation rates ranged from 28 to 44 mL/min with LVE at 40 ml/min. LVE had a resolution of 6.34 line pair/mm, while the other scopes ranged from 4.86 to 5.77 line pairs/mm. The color accuracy was quantified with Delta E, an image analysis variable, which ranged from 14 to 42 with LVE at 28. The field of view ranged from 55° to 89°, and LVE was at 89°. The image latency ranged from 41 to 92 ms with LVE at 58 ms. Finally, the maneuverability scores ranged from 3.8 to 4.1 of 5 with LVE scoring 4.1 while the ergonomics scores ranged from 2.4 to 4.8 with LVE scoring 4.4. Conclusion: LithoVue Elite had above average performance compared with single-use and reusable ureteroscopes and upper-range scores for resolution, field of view, maneuverability, and ergonomics. Accordingly, LVE shows promise; however, further research is needed to assess the impact of intrarenal pressure on the standard of care.

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Evaluation of a new disposable flexible ureterorenoscope and comparison to an established disposable flexible ureterorenoscope: a prospective, observational study

Cited by 3 publications

References 17 publications

In vitro Comparison of the Mechanical and Optical Characteristics of 5 Disposable Flexible Ureteroscopes

In vitro Comparison of the Mechanical and Optical Characteristics of 5 Disposable Flexible Ureteroscopes

Single-Use Flexible Ureteroscopes: How Difficult Is It Today to Stay Up to Date? A Pictorial Review of Instruments Available in Europe in 2023

LithoVue Elite Compared With Single-Use and Reusable Ureteroscopes: A Bench and Human Cadaver Study

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