Cost-effectiveness of anti-retropulsion devices for ureteroscopic pneumatic lithotripsy.

Olweny E, Eisner B, Stoller M

Conclusion: “Anti-retropulsion devices are cost-effective at retropulsion rates of 14% or greater. … use of antiretropulsion devices can potentially reduce costs and secondary procedures, leading to improvements in patient care.”

Anti-retropulsion devices increase stone fragmentation efficacy with holmium:YAG laser lithotripsy.

Jonat LM, Chew BH, Lange D, Paterson RF, Teichman JM

Conclusion: “Anti-retropulsion devices increase stone fragmentation efficiency and facilitate high power lithotripsy...”

The Accordion device for avoiding ureteral retrograde stone migration: Initial Brazilian experience.

Mitre AI, Pagotto VdC, Pagotto CJ, MD, Dénes FT, Ebaid GX, Rocha FT, Gromatsky C

Conclusion: “The Accordion device effectively occluded the ureter preventing retrograde migration of clinically-relevant calculi or fragments during ureteroscopic pneumatic ballistic or laser lithotripsy.”

The capability of antiretropulsion devices to redirect fluid irrigation during ureteroscopy.

Poh BK, Jonat LM, Lange D, Chew BH

Conclusion: “The Accordion reduces the amount of irrigation that reaches the kidney during ureteroscopy and significantly increases the backflow or irrigation that potentially increases the amount of fragments washed into the bladder…”

Ability of antiretropulsion devices to prevent intrarenal pressure rise in ex vivo porcine model.

Rothberg MB, Suh LK, Gupta M

Conclusion: “…the film-based device provided superior ability to diminish intrarenal pressures at all three irrigation pressures. In some instances the film-based device completely occluded the ureter, preventing any pressure transmission from irrigation fluid into the collecting system.”

Efficacy of novel coaxial occlusion device to prevent stone migration during percutaneous nephrolithotomy (PCNL).

Gupta M, Rothberg M, Wosnitzer M

Conclusion: “This new Coaxial Accordion 15 mm device is safe and efficacious for use in PCNL procedures and can improve outcomes by preventing antegrade stone fragment migration, improving stone-free rate, facilitating retrograde pyelography, and decreasing operative time and length of stay.”

Novel use of a coaxial film-based occlusion device for optimal access during percutaneous nephrolithotomy.

Gupta M, Rothberg M, Wosnitzer M

Conclusion: “Deployment of a coaxial film-based occlusion device can be used to lower the kidney during percutaneous needle placement, potentially avoiding complications associated with intercostal renal access.”

Creation of a fluid chamber with the Accordion device increases fragmentation during ureteral ESWL: In vitro and ex vivo results.

Di Trolio JV, Ciccone PN, LaSalle MD, Bhalla R

Conclusion: “Tenting tissue away from the stone surface by the Accordion device created a fluid interface in both simulated ureters and excised porcine ureters and significantly increased the fragmentation coefficient of ESWL.”

Can the Accordion stone device assist in upper ureteral ESWL? Pilot experience with a novel use of the device.

David RD

Conclusion: “The Accordion device appears to have assisted stone fragmentation… . The Accordion provided guidance in localizing stones, did not interfere with the application of shock waves, and reduced residual stone volume by sweeping fragments out of the ureter after effective fragmentation in 5 of 5 patients.”