Lithotripsy for the Treatment of Gallstones

2014-08-27 03:55:54 | BioPortfolio


The purpose of this study is to determine the effectiveness and safety of using the Medstone lithotripter to treat single non-calcified gallstones from 4 to 20 mm in diameter.


This study is a randomized, single-masked controlled trial in which the combination therapy of lithotripsy and the bile acid drug Actigall is compared to monotherapy with only Actigall. The primary objectives are, 1) To determine whether the use of the Medstone STS Lithotripter system in combination with the orally administered drug Actigall is more effective (as measured by percentages of stone free patients 6 months after randomization) in reducing single non-calcified radiolucent gallstones (from 4 to 20mm in diameter) than use of Actigall alone, and 2) To demonstrate that use of the Medstone lithotripsy system is safe (as measured by incidence of adverse events) for the intended purpose, when operated according to its labeling.

Study Design

Allocation: Randomized, Control: Active Control, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Single Blind, Primary Purpose: Treatment




Extracorporeal Shock Wave Lithotripsy, ursodiol


The Methodist Hospital
United States




Medstone International

Results (where available)

View Results


Published on BioPortfolio: 2014-08-27T03:55:54-0400

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Medical and Biotech [MESH] Definitions

The destruction of a calculus of the kidney, ureter, bladder, or gallbladder by physical forces, including crushing with a lithotriptor through a catheter. Focused percutaneous ultrasound and focused hydraulic shock waves may be used without surgery. Lithotripsy does not include the dissolving of stones by acids or litholysis. Lithotripsy by laser is LITHOTRIPSY, LASER.

A family of heat-shock proteins that contain a 70 amino-acid consensus sequence known as the J domain. The J domain of HSP40 heat shock proteins interacts with HSP70 HEAT-SHOCK PROTEINS. HSP40 heat-shock proteins play a role in regulating the ADENOSINE TRIPHOSPHATASES activity of HSP70 heat-shock proteins.

Shock produced as a result of trauma.

A subfamily of small heat-shock proteins that are closely related to ALPHA B-CRYSTALLIN. Hsp20 heat-shock proteins can undergo PHOSPHORYLATION by CYCLIC GMP-DEPENDENT PROTEIN KINASES.

Shock resulting from diminution of cardiac output in heart disease.

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