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Tytuł pozycji:

Comparison of stone elimination capacity and drilling speed of endoscopic clearance lithotripsy devices.

Tytuł:
Comparison of stone elimination capacity and drilling speed of endoscopic clearance lithotripsy devices.
Autorzy:
Bader, Markus J.
Eisel, Maximilian
Strittmatter, Frank
Nagele, Udo
Stief, Christian G.
Pongratz, Thomas
Sroka, Ronald
Training and Research in Urological Surgery and Technology (T.R.U.S.T.)-Group
Temat:
ULTRASONIC equipment
LITHOTRIPSY
SPEED
LASER lithotripsy
Źródło:
World Journal of Urology; Feb2021, Vol. 39 Issue 2, p563-569, 7p
Czasopismo naukowe
Purpose: To investigate the fragmentation capacity, clearance time, and drilling speed of combined ultrasonic with impact dual-energy and single energy ultrasonic lithotripter devices. Methods: Stone fragmentation and clearance tests were performed under direct view in an underwater layered hemisphere by four different operators using artificial stones (n = 10/operator). Time for complete clearance was measured. Drilling tests were performed using an underwater setup, consisting of a mounting rack for fixing the lithotripter handpiece with the probe in vertical position and in contact with the stone phantom placed on one side of a balance for defined and constant contact application pressure equivalent to 450 g load. Time until complete perforation or in case of no perforation, the penetration depth after 60 s into the stone sample was recorded. Four devices, one single energy device (SED), one dual-energy dual probe (DEDP), two dual-energy single probe (DESP-1, DESP-2), with different parameters were tested. Results: Stone fragmentation and clearance speed were significantly faster for dual-energy device DESP-1 compared to all other devices (p < 0.001). Using DESP-1, the clearance time needed was 26.0 ± 5.0 s followed by DESP-2, SED and DEDP requiring 38.4 ± 5.8 s, 40.1 ± 6.3 s and 46.3 ± 11.6 s, respectively. Regarding the drilling speed, DESP-1 was faster compared to all other devices used (p < 0.05). While the drilling speed of DESP-1 was 0.69 ± 0.19 mm/s, compared to 0.49 ± 0.18 mm/s of DESP-2, 0.47 ± 0.09 mm/s of DEDP, and 0.19 ± 0.03 mm/s of SED. Conclusions: The dual-energy/single-probe device combining ultrasonic vibrations with electromechanical impact was significantly faster in fragmentation and clearing stone phantoms as well as in drilling speed compared to all other devices. [ABSTRACT FROM AUTHOR]
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