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Lithotripter

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https://www.readbyqxmd.com/read/29649900/in-vitro-comparison-of-a-novel-single-probe-dual-energy-lithotripter-to-current-devices
#1
Evan Clayton Carlos, Daniel A Wollin, Brenton B Winship, Ruiyang Jiang, Daniela Radvak, Ben H Chew, Michael R Gustafson, W Neal Simmons, Pei Zhong, Glenn M Preminger, Michael Eric Lipkin
PURPOSE: The LithoClast Trilogy is a novel single probe, dual-energy lithotripter with ultrasonic vibration and electromagnetic impact forces. ShockPulse and LithoClast Select are existing lithotripters that also use a combination of ultrasonic and mechanical impact energies. We compared the efficacy and tip motion of these devices in an in vitro setting. MATERIALS AND METHODS: 15:3 Begostones were used in all trials. Test groups were Trilogy, ShockPulse, Select ultrasound only (Select-US) and Select ultrasound with pneumatic (Select-USP)...
April 13, 2018: Journal of Endourology
https://www.readbyqxmd.com/read/29596866/preliminary-report-on-stone-breakage-and-lesion-size-produced-by-a-new-extracorporeal-electrohydraulic-sparker-array-discharge-device
#2
Bret A Connors, Ray B Schaefer, John J Gallagher, Cynthia D Johnson, Guangyan Li, Rajash K Handa, Andrew P Evan
OBJECTIVE: To determine if an innovative extracorporeal electrohydraulic shock wave device (sparker array) can effectively fracture artificial stones in vitro and in vivo, and if sparker array treatment produces a renal lesion in our pig model of lithotripsy injury. Results of these experiments will be used to help evaluate the suitability of this device as a clinical lithotripter. METHODS: Utracal-30 artificial stones were placed in a holder at the focus of the sparker array and treated with 600 shock waves (21...
March 26, 2018: Urology
https://www.readbyqxmd.com/read/29414504/novel-use-of-a-balloon-dilatation-catheter-to-enable-mechanical-lithotripsy-of-difficult-common-bile-duct-stones-after-initial-failed-attempt-a-case-report
#3
Wei-Liang Loh, Joshua Yi Min Tung, Trevor Hwee Yong Tan, Li Ting Tan, Shaun Tan, Sing Shang Ngoi
INTRODUCTION: Difficult and large common bile duct stones can be crushed and removed using a mechanical lithotripter. Very often the lack of working space within the common bile duct causing the failure of mechanical lithotripsy would inevitably mean repeat or further invasive procedures. PRESENTATION OF CASE: A patient with large and multiple common bile duct stones underwent ERCP, and initial deployment of a mechanical lithotripter failed due to the lack of working space within the common bile duct...
January 24, 2018: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/29406799/management-of-pediatric-urolithiasis-using-a-combination-of-laparoscopic-lithotomy-and-pyeloscopy
#4
Sergio Landa-Juárez, Bárbara M Rivera-Pereira, Ana M Castillo-Fernández
BACKGROUND: Minimally invasive procedures have become the standard option for treatment of urinary stones; the use of more invasive techniques is not a common practice currently. This emergent technology is not always available and laparoscopy is the alternative option. There are few reports of laparoscopic management for urinary lithiasis in pediatric patients. This study is about the use of laparoscopic surgery combined with pyeloscopy as a feasible first-line treatment for pediatric urolithiasis in renal and proximal ureteral locations...
February 6, 2018: Journal of Laparoendoscopic & Advanced Surgical Techniques. Part A
https://www.readbyqxmd.com/read/29376598/-analysis-of-clinical-effectiveness-and-risk-factors-for-complication-of-percutaneous-nephrolototripsia-in-patients-with-a-solitary-kidney
#5
L D Arustamov, M I Katibov, D S Merinov, Sh Sh Gurbanov, A V Artemov, V A Epishov
RELEVANCE: Management of patients with large and staghorn stones of a solitary kidney is widely debated among urologists and has not been sufficiently investigated, which determined the relevance of this study. MATERIALS AND METHODS: The study comprised 80 patients with large (>20 mm) and staghorn stones of an anatomically or functionally solitary kidney. Of them, 58 patients underwent percutaneous nephrolithotripsy (PNL), and 22 had open surgery. The criterion of the treatment effectiveness was the complete stone clearance or small residual fragments sized less than 3 mm...
December 2017: Urologii︠a︡
https://www.readbyqxmd.com/read/29351700/successful-treatment-of-an-impacted-lithotripter-basket-in-the-common-bile-duct-with-intracorporeal-electrohydraulic-lithotripsy
#6
Justine Fenner, Michael P Croglio, Demetrios Tzimas, Juan Carlos Bucobo
No abstract text is available yet for this article.
April 2018: Endoscopy
https://www.readbyqxmd.com/read/29310460/re-randomized-controlled-trial-comparing-three-different-modalities-of-lithotrites-for-intracorporeal-lithotripsy-in-percutaneous-nephrolithotomy-from-york-t-borofsky-ms-chew-bh-et-al-j-endourol-2017-31-1145-1151
#7
https://www.readbyqxmd.com/read/29289106/tracking-kidney-stones-in-a-homogeneous-medium-using-a-trilateration-approach
#8
Kya Shoar, Benjamin W Turney, Robin O Cleveland
Shock wave lithotripsy is a non-invasive procedure by which kidney stones are fragmented by thousands of shock waves. Currently, many shock waves are delivered to the body that do not impact the stone, but do result in tissue trauma. This motivates developing a monitoring system to locate kidney stones, with the goal of gating shock waves not aligned with the stone, and hence, reducing renal trauma during lithotripsy. The system consists of a circular array housing twenty-two 0.5 MHz transducers that can be mounted on a clinical lithotripter...
December 2017: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/29277886/the-respiratory-induced-kidney-motion-does-it-really-effect-the-shock-wave-lithotripsy
#9
Mehmet Ozgur Yucel, Serkan Ozcan, Gokhan Tirpan, Murat Bagcioglu, Arif Aydin, Arif Demirbas, Tolga Karakan
PURPOSE: To investigate the effect of respiratory induced kidney mobility on success of shock wave lithotripsy (SWL) with an electrohydraulic lithotripter. MATERIALS AND METHODS: Between May 2013 and April 2015, 158 patients underwent SWL treatment for kidney stones with an electrohydraulic lithotripter. The exclusion criteria were presence of a known metabolic disease (such as cystinuria), non-opaque stones, need for focusing with ultrasonography, abnormal habitus, urinary tract abnormalities, and inability to tolerate SWL until the end of the procedure...
January 23, 2017: Urology Journal
https://www.readbyqxmd.com/read/29244269/current-trends-of-percutaneous-nephrolithotomy-in-a-developing-country
#10
Carlos A Batagello, Fabio Carvalho Vicentini, Giovanni Scala Marchini, Fabio Cesar Miranda Torricelli, Miguel Srougi, Willian Carlos Nahas, Eduardo Mazzucchi
INTRODUCTION: To present the current practice patterns on percutaneous nephrolithotomy (PCNL) in a developing country. MATERIALS AND METHODS: A survey was offered to Brazilian urologists during the II International Endourology Symposium held in Sao Paulo, in 2015. The first seven questions were related to demographic data while the 20 remaining were directed to urologists who performed PCNL. RESULTS: From 250 participants, 100 replied to the survey, 81% performed PCNL and 60...
March 2018: International Braz J Urol: Official Journal of the Brazilian Society of Urology
https://www.readbyqxmd.com/read/29195830/retrograde-intrarenal-surgery-using-ureteral-access-sheaths-is-a-safe-and-effective-treatment-for-renal-stones-in-children-weighing-20-kg
#11
Alfredo Berrettini, Luca Boeri, Emanuele Montanari, Mirella Mogiatti, Pietro Acquati, Elisa De Lorenzis, Andrea Gallioli, Erika Adalgisa De Marco, Dario Guido Minoli, Gianantonio Manzoni
INTRODUCTION: Surgical treatment of pediatric kidney stones has changed dramatically in recent years because of the miniaturization of surgical instruments and the availability of intracorporeal lithotripters. The retrograde intrarenal surgery (RIRS) technique is nowadays considered an effective and safe procedure but studies in very young children are lacking and use of a ureteral access sheath (UAS) has also been debated. OBJECTIVE: To assess safety and efficacy of RIRS using UAS in children weighing < 20 kg...
November 11, 2017: Journal of Pediatric Urology
https://www.readbyqxmd.com/read/29195423/evaluation-of-an-experimental-electrohydraulic-discharge-device-for-extracorporeal-shock-wave-lithotripsy-pressure-field-of-sparker-array
#12
Guangyan Li, Bret A Connors, Ray B Schaefer, John J Gallagher, Andrew P Evan
In this paper, an extracorporeal shock wave source composed of small ellipsoidal sparker units is described. The sparker units were arranged in an array designed to produce a coherent shock wave of sufficient strength to fracture kidney stones. The objective of this paper was to measure the acoustical output of this array of 18 individual sparker units and compare this array to commercial lithotripters. Representative waveforms acquired with a fiber-optic probe hydrophone at the geometric focus of the sparker array indicated that the sparker array produces a shock wave (P+ ∼40-47 MPa, P- ∼2...
November 2017: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/29188308/ureteroscopy-from-the-recent-past-to-the-near-future
#13
REVIEW
José Manuel Reis Santos
Stone surgery is one of oldest surgical practices undertaken by man. Hippocrates refused to let his followers "cut for the stone" and it was only in February 1980, when the first human trial of shock wave therapy on a renal stone was performed with success that a new era in minimally invasive treatment (surgery) for stones was opened up and this condemnation was finally resolved in the Hippocratic Oath. Endoscopy, using natural orifices, supported by anaesthesia, incremented by technology and with access to all points along the urinary tract, began by competing with ESWL, but is now the treatment of choice in most cases...
February 2018: Urolithiasis
https://www.readbyqxmd.com/read/29177561/how-can-and-should-we-optimize-extracorporeal-shockwave-lithotripsy
#14
REVIEW
Christian G Chaussy, Hans-Göran Tiselius
It is well recognized that the popularity of extracorporeal shock wave lithotripsy (SWL), despite its non-invasive character, has decreased during recent years. This is partly explained by the technological achievements in endoscopy and urologists' enthusiasm for such procedures. Another explanation is that many urologists have been insufficiently successful with SWL. The latter effect might to some extent be a result of the performance of the lithotripter used, but in too many cases, it is evident that the principles of how shock wave lithotripsy should be carried out are poorly applied...
February 2018: Urolithiasis
https://www.readbyqxmd.com/read/29164303/percutaneous-nephrolithotomy-position-position-position
#15
REVIEW
Zhijian Zhao, Junhong Fan, Yang Liu, Jean de la Rosette, Guohua Zeng
Percutaneous nephrolithotomy (PCNL) is the regular surgery for treating large or complex renal stones. Since its first inception, many variations have come in the approach including the modifications of patient position. The prone position is traditionally used, and subsequently, variations in prone and supine technique have been proposed and assessed over time. In an attempt to provide comprehensive information about the strategy applications of patient's position, the present review describes the position-related general basis, and provides a literature review of the pros and cons of various positions from a surgical and anaesthetic point of view...
February 2018: Urolithiasis
https://www.readbyqxmd.com/read/29136679/current-trends-and-pitfalls-in-endoscopic-treatment-of-urolithiasis
#16
REVIEW
Takaaki Inoue, Shinsuke Okada, Shuzo Hamamoto, Takashi Yoshida, Tadashi Matsuda
Current development of endoscopic technology, lithotripters, and stone-retrieval devices has expanded the indications for retrograde and antegrade endoscopic therapy in the management of urolithiasis. This technology has also resulted in minimally invasive therapy. As surgeons' experience of endourological procedures with the newer instruments has become integrated, the surgical technique and indications for urolithiasis have also changed in the past few years. The present review provides an overview of endourological procedures for upper urinary tract stones and the key points related to surgical techniques...
February 2018: International Journal of Urology: Official Journal of the Japanese Urological Association
https://www.readbyqxmd.com/read/29135147/-biomarkers-of-renal-injury-in-contact-ureteral-lithotripsy
#17
A I Tarasenko, A M Pushkarev, I G Rakipov, A V Alekseev, Ya V Kondratenko, V N Pavlov
AIM: To optimize the transurethral endoscopic management of patients with ureterolithiasis by measuring biomarkers of renal parenchymal damage. MATERIALS AND METHODS: One hundred fifty-one patients with solitary ureteral stones were tested for levels of cystatin C, neutrophil gelatinase-associated lipocalin, 2-microglobulin and interleukin 18. RESULTS: An increase in the levels of markers of renal injury was observed both in the preoperative period and after CULT...
October 2017: Urologii︠a︡
https://www.readbyqxmd.com/read/29131810/the-role-of-trapped-bubbles-in-kidney-stone-detection-with-the-color-doppler-ultrasound-twinkling-artifact
#18
Julianna C Simon, Oleg A Sapozhnikov, Wayne Kreider, Michael Breshock, James C Williams, Michael R Bailey
The color Doppler ultrasound twinkling artifact, which highlights kidney stones with rapidly changing color, has the potential to improve stone detection; however, its inconsistent appearance has limited its clinical utility. Recently, it was proposed stable crevice bubbles on the kidney stone surface cause twinkling; however, the hypothesis is not fully accepted because the bubbles have not been directly observed. In this paper, the micron or submicron-sized bubbles predicted by the crevice bubble hypothesis are enlarged in kidney stones of five primary compositions by exposure to acoustic rarefaction pulses or hypobaric static pressures in order to simultaneously capture their appearance by high-speed photography and ultrasound imaging...
January 9, 2018: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/29129709/sialolithiasis-removal-under-general-anesthesia-a-descriptive-retrospective-study-in-the-maxillofacial-surgery-department-in-lille-university-hospital
#19
R Ruiz, A Brygo, R Nicot, J Ferri
INTRODUCTION: Since the beginning of the use of sialendoscopy and extracorporeal lithotripsy, recommendations have changed. The purpose of this retrospective study was to evaluate the efficiency of our treatment protocol, without a lithotripter, under general anaesthesia in the Stomatology and Maxillofacial Surgery Department of Lille University Hospital. The secondary goals were to evaluate patient tolerance and satisfaction. MATERIALS AND METHODS: All patients treated with sialendoscopy alone, sialendoscopy with a combined surgical approach or a transoral approach (TOA) (sialolithotomy) between January 2013 and December 2015 were included...
November 10, 2017: Journal of Stomatology, Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29119841/a-state-of-art-review-of-low-intensity-extracorporeal-shock-wave-therapy-and-lithotripter-machines-for-the-treatment-of-erectile-dysfunction
#20
Eric Chung, Juan Wang
Current treatment for erectile dysfunction (ED) mostly attempts to improve erectile function with limited impact on altering the underlying pathophysiology of ED. Recent animal experiments have supported the notion that low intensity extracorporeal shockwave therapy (LIESWT) significantly improves penile hemodynamics and might induce structural changes that regenerate penile tissue. Areas covered: This review article provides an overview of the basic mechanics and clinical studies pertaining to LIESWT and its use in the field of ED...
December 2017: Expert Review of Medical Devices
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