Device with variable rigidity and surgical gripping device

A surgical gripping device comprising two flexible sheets each having:

• a base material structured by a sheet-shaped elastic material, one surface of which has a plurality of recesses and a plurality of protrusions;
• a low rigidity portion disposed at the recesses and joined to the recesses such that the one surface is flat, and structured by an elastic material of a lower modulus of elasticity than the base material;
• and
• a friction material provided at the one surface,
• wherein the two flexible sheets are covered by a bag-shaped cover in a state in which the friction materials face one another,
• wherein the surgical gripping device further has a vent hole that enables suction of a fluid, which is between the flexible sheets and within the cover, from an exterior of the cover,
• wherein a through-hole that passes through in a thickness direction is formed in one of the flexible sheets,
• wherein an adsorbing member, which is air permeable overall and which can adsorb a gripped object, is provided at a surface, which is at a side opposite from the friction material, of the one of the flexible sheets, and
• wherein the surgical gripping device can cause the adsorbing member to adsorb an organ, and can grip the organ.