A novel atraumatic puncture needle MG. Results of a comparative morphological study

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Introduction. Despite the low invasiveness of percutaneous nephrolithotripsy, this surgery is not without complications. One of the most important stages of the operation, on which depends not only the success of the patient completely getting rid of calculus, but the likelihood of complications, is the puncture of the pelvic-pelvic system. Purpose. Determination of the effectiveness and security of the new less-traumatic puncture needle MG under experimental conditions. Materials and methods. A series of pork kidney punctures with a new less-traumatic needle MG and standard Chiba and Troakar needles (Coloplast A/S, Denmark) were performed under experimental conditions, followed by a comparative morphological assessment. The staining of the slides was performed with hematoxylin and eosin. For the purpose of additional assessment of the structures of the kidney punctured with a low-traumatic MG needle, a morphological assessment of the parenchyma stained with picrofuchsin according to Van Gieson was performed. Results. On parenchymal slides with punctures with Chiba and Trocar needles, the passage places with multiple large fragments of desquamated (damaged) epithelium are visualized. On preparations of the parenchyma punctured with a less-traumatic needle MG, the place of passage of the needle is presented with clear contours. The damaged epithelium in the lumen of the formed defect is practically absent. With additional staining according to Van Gieson (magnification x200), the integrity of the full-blooded vessel adjacent to the limited focus of the needle MG was visualized. Output. The new less-traumatic puncture needle MG is an innovative development in urology. The design of the needle with an atraumatic mandrel-bulb atraumatic mandrel-bulb on a spring basis made it possible to significantly reduce the trauma to the structures of the kidney and perirenal tissues due to the bougienage effect.

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About the authors

N. E. Kalinin

Sechenov University

Email: nikita150293@yandex.ru
graduate student, Institute for Urology and Reproductive Health, Sechenov University Moscow, Russia

J. V Lerner

Sechenov University

Email: julijalerner@inbox.ru
Cand.Med.Sci. assistant, Department of Pathological Anatomy, Sechenov University Moscow, Russia

V. Y Mikhaylov

Sechenov University

Email: mikhaylov_v_yu@staff.sechenov.ru
Cand.Med.Sci. Chief Physician, University Clinical Hospital №2, Sechenov University Moscow, Russia

M. A Gazimiev

Sechenov University

Email: gazimiev@yandex.ru
Doc.Med.Sci. Professor, Deputy Director for Academic Work, Institute for Urology and Reproductive Health, Sechenov University; Director National medical research center of urology, Sechenov University Moscow, Russia


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