Raimondi腹側管の再度離断例—断端破面の走査電顕所見について

Spontaneous Transection of Raimondi Peritoneal Catheter: A case report with scanning electron microscopic study of transected tube

I．はじめに

　本来，Raimondi腹側管は管の屈曲による短絡術後の合併症を防止するために考案されたものであるが，この腹側管による腹腟内臓器穿通例および離断例が報告されている^1,4,5,7）．最近，Raimondi腹側管の離断を再度繰り返した症例を経験し，その離断スプリングワイヤーの断端破面を走査電顕で2回にわたり観察する機会があったので，離断の機序について若干の考察を行い報告する．

Spontaneous transection of Raimondi peritoneal catheter is reported. A 6-month-old boy with com-municating hydrocephalus had ventriculoperitoneal shunt surgery using Raimondi peritoneal catheter. Six months later, Raimondi catheter was found to be spontaneously transected in a peritoneal cavity. At the age of 5 year-old, the originally installed Raimondi catheter was again transected on the por-tion of chest wall. Scanning electron microscopic examination of the broken end of spring wire sug-gested that transection was caused by repetitive exertion of external forces.