脊椎手術におけるJ-VAC®ドレーン設置の注意点—黒点の意義についての考察

Placing BLAKE® Silicone Drains during Spinal Surgery. Disregarding the Black Dot

　背景：J-VAC^®ドレーン留置時に皮膚固定の目安として，ドレーンに黒点が記されている．しかし，黒点を皮膚に合わせると溝開始部が筋肉内や筋膜に位置し，吸引力が低下する可能性がある．

　対象と方法：J-VAC^®ドレーンを用いて溝開始部を圧迫したときの吸引力について調べた．

　結果：溝開始部を圧迫すると吸引されないことが証明された．

　まとめ：J-VAC^®ドレーンの特性を考慮し，今後ドレーン留置時には黒点を無視して，スレッドの最近位部を創の中心部に留置することを推奨する．

　Background：As a guide, the black dot inscribed on the drain marks the point the drain is secured to the skin.　However, if the black dot is used as a guide and the most proximal slits in the flutes are placed in muscle or fascia, the suction provided by the BLAKE^® Drain is markedly reduced.

　Method：We compressed the most proximal slits in the flutes of the BLAKE^® Drain and checked the power of drainage in the in vitro study.

　Outcome：In the in vitro study we demonstrated that the BLAKE^® Drain provided minimal drainage when the most proximal slits in the flutes were compressed.

　Conclusion：This indicates that when the BLAKE^® Drain is placed, the most proximal slits in the flutes, which provide the most effective suction, should be kept at the site requiring drainage regardless of the position of the black dot on the drain.