METHODS FOR PREVENTING RETROPULSION OF CONCRETIONS AND FRAGMENTS DURING LITHOTRIPSY

PROBLEM TO BE SOLVED: To provide a method for the treatment of lithiasis, which mitigates the risk of damage to surrounding body tissue when removing calculi (e.g., biological concretions, such as urinary, biliary, and pancreatic stones) that obstructs or may otherwise be present within a body anatomical lumen.SOLUTION: The instant invention provides a method of using a polymer plug to occlude a lumen distal to calculi, and thereby calculus fragments resulting from lithotripsy are prevented from traveling up the lumen. In certain embodiments, a dual lumen catheter is utilized to inject two solutions into the vicinity of the calculi, where the mixing of the solutions causes a polymer plug to form.SELECTED DRAWING: Figure 1 【課題】身体解剖学的な管腔を閉塞させるか、あるいは管腔内に存在するであろう、結石（例えば、尿結石、胆管結石、および膵石などの生物学上の結石）を除去する際に、周囲の生体組織の損傷の危険性を軽減する、結石症の治療方法の提供。【解決手段】ポリマープラグを用い、結石に対して遠位の管腔を塞ぎ、それによって砕石術で生じた結石断片が管腔の上方に移動するのを防ぐ方法。また、ダブルルーメン・カテーテルを用いて２種類の溶液を結石の近くに注入し、溶液の混合によってポリマープラグを形成させる方法。【選択図】図１