Objective: To assess a novel combined laser suction handpiece (LSH) for performing PCNL in a clinical setting.
Methods: The study comprised 40 consecutive PCNLs performed between May 2019 and February 2020. The first 20 procedures (Group A) were performed with conventional ultrasonic or pneumatic devices and the other 20 (Group B) were performed with the use of the new LSH. All patients were treated by tubeless supine PCNL. The groups were compared for demographics, clinical data, operative time, lithotrite effectiveness, stone clearance rate (SCR), and outcome.
Results: Groups A and B were similar in age, and in stone size, complexity, and density (Hounsfield units) ( < 0.05). The average operative time was 99 and 78 min, SCR 143 and 200 mm/min, hospital stay 1.6 and 1.1 days, and stone-free rate 90% and 95%, respectively. Despite a trend toward better results with the new LSH, none of these comparisons reached statistical significance. Ineffective lithotripsy with the initial device (ultrasonic) requiring conversion to another modality (ballistic) occurred in six (30%) procedures in Group A, while all procedures were effectively accomplished with the LSH in Group B ( = 0.02). There were two complications in Group A and none in Group B ( > 0.05).
Conclusions: The LSH is as effective and safe as the traditional lithotrites for performing PCNLs. This new tool completes the capabilities of the holmium laser high-power machines, enabling them to serve as the sole platform for all endourological treatments.
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http://dx.doi.org/10.1177/03915603211031874 | DOI Listing |
Investig Clin Urol
January 2025
Department of Urology, Seoul National University Bundang Hospital, Seongnam, Korea.
The global increase in urolithiasis prevalence has led to a shift towards minimally invasive procedures, such as retrograde intrarenal surgery, supported by advancements in laser technologies for lithotripsy. Pulsed lasers, particularly the holmium YAG and the newer thulium fiber laser, have significantly transformed the management of upper urinary tract stones. However, the use of high-power lasers in these procedures introduces risks of heat-related injury.
View Article and Find Full Text PDFPurpose: To compare the clinical outcomes, surgical workflow, and patient satisfaction following small incision lenticule extraction (SMILE) performed with the VisuMax 800 in one eye and the VisuMax 500 in the contralateral eye (both Carl Zeiss Meditec).
Methods: This was a prospective, single-site clinical study of patients undergoing SMILE for myopia and myopic astigmatism between February 2022 and August 2023. Each patient underwent bilateral treatment using the VisuMax 800 (VM800 group) in one eye and the VisuMax 500 (VM500 group) in the contralateral eye.
Sci Rep
January 2025
John A. Paulson School of Engineering and Applied Sciences, Harvard University, Boston, MA, 02134, USA.
Many aquatic organisms utilize suction-based organs to adhere to diverse substrates in unpredictable environments. For multiple fish species, these adhesive discs include a softer disc margin consisting of surface structures called papillae, which stabilize and seal on variable substrates. The size, arrangement, and density of these papillae are quite diverse among different species, generating complex disc patterns produced by these structures.
View Article and Find Full Text PDFInt J Surg
December 2024
Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan, China.
Purpose: To evaluate the effectiveness and safety of an upgraded integrated vacuum suction catheter in semi-rigid ureteroscopic laser lithotripsy (VC-URSL) compared to traditional methods for treating impacted upper ureteral stones.
Patients And Methods: This prospective, randomized controlled trial was conducted from September 2022 to March 2024 at a single center, enrolling 95 patients aged 18 to 70 years with a single radiopaque impacted upper ureteral stone. Participants were randomized into two groups: the VC-URSL group used an integrated vacuum suction catheter featuring a stainless steel stabilizing tube and a narrowed distal end to prevent obstruction, while the T-URSL group underwent standard ureteroscopic lithotripsy without vacuum assistance.
World J Urol
December 2024
Progressive Endourological Association for Research and Leading Solutions (PEARLS), Paris, France.
Purpose: Use of suction in flexible ureteroscopy is increasing lately. The introduction of flexible and navigable suction access sheath (FANS) has shown improved stone free rate (SFR). However, its efficacy in lower pole stone (LPS) in terms of SFR and complications is yet to be studied.
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