| 摘要 |
The invention relates to a device (1) for holding and releasing an object (3 ), which device comprises: a body (4) with a cavity (5) in which the object is accommodatable; an elastic retaining member (6) for retaining the object in the cavity; a pushing member (7) for pushing the object out of the body past the retaining member; wherein the pushing member comprises a first stimuli responsive gel (8), which has a volume that varies in response to variation of a selected physical stimulating parameter: and control means for controlling the pushing member, by stimulating the first gel.
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