fragmentation of kidney stones moscow
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Controlled Fragmentation of Urinary Stones as a Method

2021-6-24  55 CLINICAL Controlled Fragmentation of Urinary Stones as a Method of Preventing Inflammatory Infections in the Treatment of Urolithiasis (Experience in Successful Clinical Use) DOI: 10.17691/stm2021.13.3.07 Received December 17, 2020 O.S. Streltsova, MD, DSc, Professor, Е.V. Shakhov Urology Department1; V.V. Vlasov, MD, PhD, Associate Professor, Е.V. Shakhov Urology

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Lasertripsy For the Controlled Coarse Fragmentation of ...

2019-3-27  Prevention of kidney infections after the nephrolithotrypsy procedure can be ensured by a controlled, laser-enabled coarse fragmentation of urinary tract stones. This method allows to avoid scattering of the contents of the stones in a renal cavity system by selecting the laser regime optimal for contact lithotripsy. In the case

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Fragmentation of urinary calculi in vitro by burst wave ...

Stones were exposed to bursts with focal pressure amplitude of 6.5 MPa or less at a 200 Hz burst repetition rate until completely fragmented. Ultrasound frequencies of 170, 285 and 800 kHz were applied using 3 transducers, respectively. Time to fragmentation for each stone type was recorded and fragment size distribution was measured by sieving.

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Detecting Fragmentation of Kidney Stones in Lithotripsy

2006-5-17  Although extracorporeal shock wave lithotripsy (a procedure of kidney stone comminution using focused shock waves) has been used clinically for many years, a proper monitoring of the stone fragmentation is still undeveloped. A method considered here is based on recording shock wave scattering signals with a focused receiver placed far from the stone, outside the patient body.

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Structure Types of Kidney Stones and Their Susceptibility ...

2021-11-23  The features of the kidney stone structure types were evaluated based on the tomographic parameters (MSL, MSD), as well as SWs number characterizing the stone susceptibility to shock wave fragmentation. Comparative analysis of various structure types of kidney stones revealed statistically significant differences in SWs between the study groups.

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[Decrease in time of transurethral laser litotripsy due to ...

Fragmentation of stones in kidney was carried out by a holmium lithotripter of Triple type with the help of semirigid and flexible ureteroscopes. In the case of severe clouding of the fragmentation region, the author s technique of percutaneous micro-drainage of the kidney was used.

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Experiments with extracorporeal shock wave ...

Two sets of experiments were carried out on 14 live rabbits having renal calculi from nephrolithiasis patients implanted in their kidneys. Shock waves were used to disintegrate the implanted concrements. It took 100 to 150 sound pulses to crush struvite stones to fragments less than 2 mm in size, with 400 to 800 pulses needed to destroy calcium oxalate stones. After multiple exposures to shock ...

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A mechanistic analysis of stone fracture in lithotripsy ...

2007-1-29  In vitro experiments and an elastic wave model were used to analyze how stress is induced in kidney stones by lithotripsy and to test the roles of individual mechanisms—spallation, squeezing, and cavitation. Cylindrical U30 cement stones were treated in an HM-3-style lithotripter. Baffles were used to block specific waves responsible for spallation or squeezing.

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Controlled Fragmentation of Urinary Stones as a Method

2021-6-24  55 CLINICAL Controlled Fragmentation of Urinary Stones as a Method of Preventing Inflammatory Infections in the Treatment of Urolithiasis (Experience in Successful Clinical Use) DOI: 10.17691/stm2021.13.3.07 Received December 17, 2020 O.S. Streltsova, MD, DSc, Professor, Е.V. Shakhov Urology Department1; V.V. Vlasov, MD, PhD, Associate Professor, Е.V. Shakhov Urology

Read More
Detecting Fragmentation of Kidney Stones in Lithotripsy

2006-5-17  Although extracorporeal shock wave lithotripsy (a procedure of kidney stone comminution using focused shock waves) has been used clinically for many years, a proper monitoring of the stone fragmentation is still undeveloped. A method considered here is based on recording shock wave scattering signals with a focused receiver placed far from the stone, outside the patient body.

Read More
G.N. Akopyan's research works I.M. Sechenov First

G.N. Akopyan's 15 research works with 6 citations and 127 reads, including: OPTIMAL CHOICE OF STONE DISEASE’ SURGICAL TREATMENT IN PATIENTS SUFFERED PROSTATE CANCER: RETROSPECTIVE ANALYSIS

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Fragmentation of urinary calculi in vitro by burst wave ...

2014-8-9  Stones were exposed to bursts with focal pressure amplitude of 6.5 MPa or less at a 200 Hz burst repetition rate until completely fragmented. Ultrasound frequencies of 170, 285 and 800 kHz were applied using 3 transducers, respectively. Time to fragmentation for each stone type was recorded and fragment size distribution was measured by sieving.

Read More
Urology » Decrease in time of transurethral laser ...

2021-2-21  Fragmentation of stones in kidney was carried out by a holmium lithotripter of Triple type with the help of semirigid and flexible ureteroscopes. In the case of severe clouding of the fragmentation region, the author ‘s technique of percutaneous micro-drainage of the kidney was used.

Read More
Lasertripsy For the Controlled Coarse Fragmentation of ...

2019-3-27  Prevention of kidney infections after the nephrolithotrypsy procedure can be ensured by a controlled, laser-enabled coarse fragmentation of urinary tract stones. This method allows to avoid scattering of the contents of the stones in a renal cavity system by selecting the laser regime optimal for contact lithotripsy. In the case

Read More
A mechanistic analysis of stone fracture in lithotripsy ...

2007-1-29  In vitro experiments and an elastic wave model were used to analyze how stress is induced in kidney stones by lithotripsy and to test the roles of individual mechanisms—spallation, squeezing, and cavitation. Cylindrical U30 cement stones were treated in an HM-3-style lithotripter. Baffles were used to block specific waves responsible for spallation or squeezing.

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Stone Management Urology Olympus Medical Systems

2021-8-4  Successful stone fragmentation depends largely on the ability to accurately apply the appropriate level of energy at the correct impact frequency to the exact target area of the stone. Olympus offers powerful advanced lithotripsy technology options for the fragmentation and removal of kidney, ureteral, and bladder stones regardless of the size ...

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Frontiers Mitochondrial Dysfunction and Kidney Stone ...

2020-10-20  Figure 2.Involvement of mitochondrial dysfunction in the pathophysiology of kidney stone disease: Mechanism II – Mitochondrial dysfunction causes the release of cytochrome c and induces apoptotic cell death associated with cell shrinkage, blebbing of plasma membranes, organelle condensation, and fragmentation. The resulting apoptotic bodies, cell debris, and fragmented

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Controlled Fragmentation of Urinary Stones as a Method

2021-6-24  55 CLINICAL Controlled Fragmentation of Urinary Stones as a Method of Preventing Inflammatory Infections in the Treatment of Urolithiasis (Experience in Successful Clinical Use) DOI: 10.17691/stm2021.13.3.07 Received December 17, 2020 O.S. Streltsova, MD, DSc, Professor, Е.V. Shakhov Urology Department1; V.V. Vlasov, MD, PhD, Associate Professor, Е.V. Shakhov Urology

Read More
Lasertripsy For the Controlled Coarse Fragmentation of ...

References. Prevention of kidney infections after the nephrolithotrypsy procedure can be ensured by a controlled, laser-enabled coarse fragmentation of urinary tract stones. This method allows to avoid scattering of the contents of the stones in a renal cavity system by selecting the laser regime optimal for contact lithotripsy.

Read More
Detecting Fragmentation of Kidney Stones in Lithotripsy

2006-5-17  Although extracorporeal shock wave lithotripsy (a procedure of kidney stone comminution using focused shock waves) has been used clinically for many years, a proper monitoring of the stone fragmentation is still undeveloped. A method considered here is based on recording shock wave scattering signals with a focused receiver placed far from the stone, outside the patient body.

Read More
Fragmentation of Urinary Calculi In Vitro by Burst Wave ...

2015-12-28  fragmentation and minimize reflections from the holder. The stone and holder were attached to a motorized, 3-axis positioning system (Velmex, Bloomfield, New York), which allowed for precise alignment of the stone with the focus. A digital camera was used to record images of stones and fragments before, during and after acous-tic exposure.

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Fragmentation of urinary calculi in vitro by burst wave ...

2014-8-9  Stones were exposed to bursts with focal pressure amplitude of 6.5 MPa or less at a 200 Hz burst repetition rate until completely fragmented. Ultrasound frequencies of 170, 285 and 800 kHz were applied using 3 transducers, respectively. Time to fragmentation for each stone type was recorded and fragment size distribution was measured by sieving.

Read More
Lasertripsy For the Controlled Coarse Fragmentation of ...

2019-3-27  Prevention of kidney infections after the nephrolithotrypsy procedure can be ensured by a controlled, laser-enabled coarse fragmentation of urinary tract stones. This method allows to avoid scattering of the contents of the stones in a renal cavity system by selecting the laser regime optimal for contact lithotripsy. In the case

Read More
Kidney Stones’ Fragmentation Services Offered for Free in ...

2018-12-2  The center’s new device is specialized in the fragmentation of kidney, bladder and ureter stones, Jaber al-Dayikh, head of the new medical department, told Enab Baladi. “The new device, through the echo tests it is able to conduct, can discover the

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19th INTERNATIONAL CONGRESS ON ACOUSTICS

2014-10-23  19th international congress on acoustics madrid, 2-7 september 2007 frequency analysis of shock wave scattering to identify kidney stone fragmentation in shock wave lithotripsy pacs: 43.20.fn, 43.90.vj, 43.80.qf

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Modeling elastic wave propagation in kidney stones with ...

2005-10-5  A time-domain finite-difference solution to the equations of linear elasticity was used to model the propagation of lithotripsy waves in kidney stones. The model was used to determine the loading on the stone (principal stresses and strains and maximum shear stresses and strains) due to the impact of lithotripsy shock waves. The simulations show that the peak loading induced in kidney

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