PROBLEM TO BE SOLVED: To provide a tissue expander capable of being used without requiring wide subcutaneous exfoliation when being retained inside a body and with simple surgery and less invasion and load on a patient, without causing the conventional problems accompanying the subcutaneous exfoliation and capable of significantly reducing incidence of complications caused by infection.SOLUTION: A tissue expander includes an expanding main body (2) having a fluid housing part (5) therein, and a fluid supply path (3) communicating with the fluid housing part (5), for supplying a fluid into the fluid housing part (5). The expanding main body (2) is formed into a slender cylindrical shape, both ends of which are sealed. In a peripheral wall (6) of the fluid housing part (5), when the fluid is injected into the fluid housing part (5) to increase pressure therein, a peripheral length of a cross-section in a width dimension extends, thereby increasing a height dimension of the expanding main body (2).COPYRIGHT: (C)2014,JPO&INPIT【課題】体内へ留置する際に広範囲な皮下剥離を必要とせず、施術が非常に簡便で且つ患者に低侵襲で用いることができ、患者への負担が少ないうえ、従来必要とされた皮下剥離に伴う問題を生じることがなく、感染による合併症の発生率を大幅に低減する。【解決手段】内部に流体収容部(5)を備える膨張本体(2)と、流体収容部(5)内に連通してこの流体収容部(5)内へ流体を供給する流体供給路(3)とを備える。膨張本体(2)は両端が封止された細長い筒状に形成されている。流体収容部(5)の周壁(6)は、流体収容部(5)内への流体注入により圧力が上昇すると、幅方向の断面における周長が長くなる。これにより、膨張本体(2)の高さ寸法が大きくなる。【選択図】図1
