Assembly (10) for anchoring in tissue, comprising an anchor part (11) and a biasing part (14). The anchor part comprises a support (12), at least two needles (13) coupled to the support, the needles having a tip end (131) configured to engage tissue. The at least two needles are allowed to be positioned according to a first configuration. A biasing part (14) configured to position the anchor part according to a second configuration differing from the first configuration in an orientation of the at least two needles relative to one another. The biasing part comprises holding means (142) configured to hold the anchor part in the second configuration.
