PROBLEM TO BE SOLVED: To provide a blood vessel clamp for laparoscopic surgery capable of intermittently gradually blocking a blood flow.SOLUTION: A blood vessel clamp comprises a first linear rod body, a second linear rod body, and a connection part for connecting the proximal ends of the first and second rod bodies together with hinge mechanism. These rod bodies abut each other with the connection part as a hinge and sandwich a blood vessel to block a blood flow. The first rod body includes a hook part at its distal end and a recess or a protrusion extending from the proximal end to the distal end in the longitudinal direction of the first rod body on its abutting surface. The second rod body includes a locking part at its distal end and a recess or a protrusion extending from the proximal end to the distal end in the longitudinal direction of the second rod body on its abutting surface. The recess of the second rod body fits the protrusion of the first rod body, and the protrusion of the second rod body fits the recess of the first rod body. The cross-sectional widths of the rod bodies, the hook part, the locking part, and the connection part in the directions of crossing the longitudinal directions of the first and second rod bodies are formed to have shorter widths than the inner diameter of a laparoscopic port. The center areas of the protrusions are formed to be higher than their proximal and distal areas.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2017,JPO&INPIT【課題】腹腔鏡下手術において、血流を間欠的かつ段階的に遮断することができる血管クランプを提供する。【解決手段】血管クランプは、直線状の第1及び第2の棒体と、これらの棒体の近位端がヒンジ機構を介して連結された連結部とから成り、これらの棒体が連結部をヒンジとし、相互に当接して血管を挟持して血流を遮断する。第1の棒体は、遠位端にフック部が設けられ、かつ、近位端から遠位端まで長手方向に伸びる凹部又は凸部が当接面上に設けられる。第2の棒体は、遠位端に係止部が設けられ、かつ、近位端から遠位端まで長手方向に伸びる凸部又は凹部であって、第1の棒体の凹部又は凸部と嵌合する凸部又は凹部が当接面上に設けられる。第1及び第2の棒体の長手方向を横切る断面幅であって、棒体、フック部、係止部及び連結部の断面幅は、腹腔鏡用ポートの内径より小さく形成される。凸部は遠位端近傍と近位端近傍よりも中央部の高さが大きく形成される。【選択図】図1
