A percutaneous valve device and system is provided that improves the seal between the fixture and the native tissue. The fixture includes a space-occupying material such as hydrogel on the outer surface, which expands when exposed to an aqueous environment and closes the gap between the fixture and the native tissue as a valve seal. Works.固定具と生来の組織との間の密閉を改良する経皮弁装置およびシステムが提供される。固定具は外表面にヒドロゲル等の空間占拠材料を含み、当該空間占拠材料は、水性の環境に晒されると膨張し、固定具と生来の組織との間の隙間を塞ぐことで、弁シールとして作用する。
