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Related Experiment Videos

A new operative fiberpyeloscope.

S Tsuchida

    The Tohoku Journal of Experimental Medicine
    |August 1, 1975
    PubMed
    Summary

    A new flexible fiber pyeloscope allows for easy extraction of kidney stones. This advanced scope offers improved visualization and maneuverability for renal pelvic and caliceal stone removal.

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    Area of Science:

    • Urology
    • Medical Devices
    • Minimally Invasive Surgery

    Background:

    • Traditional operative pyeloscopes have limitations in visual field and handling.
    • These limitations hinder effective stone extraction from the renal pelvis and calyces.

    Purpose of the Study:

    • To introduce a novel flexible fiber pyeloscope designed for improved renal stone removal.
    • To overcome the limitations of existing pyeloscopes in terms of visualization and manipulation.

    Main Methods:

    • Development of a flexible fiber pyeloscope with specific dimensions (630 mm length, 8.5 mm diameter, 60-degree field of vision).
    • Incorporation of a 90-degree angle deflector for comprehensive visualization of the renal pelvis.
    • Utilized specially designed stone grasping forceps inserted through the scope's channel for direct stone manipulation.
    • Introduced the scope through a small incision in the renal pelvis for stone extraction.

    Main Results:

    • Successfully extracted renal pelvic stones in two patient cases.
    • Demonstrated ease of stone grasping and removal under direct observation.
    • The flexible pyeloscope facilitated clear visualization from all angles within the renal pelvis.

    Conclusions:

    • The developed flexible fiber pyeloscope is effective for extracting renal pelvic and caliceal stones.
    • This device offers significant advantages over previous pyeloscopes due to enhanced visualization and handling.
    • Successful application in clinical cases highlights its potential for minimally invasive urological procedures.

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