The present invention relates to an implantable attachment device comprising an elongate element which is tubular flexible and hollow delimiting an internal volume comprising a tightening loop, having a first circumference in the inactive position, formed by the portion of said tubular element in said internal volume between intake and outlet openings distant by a length. The device comprises blocking means of said portion in the internal volume of said elongate element, which can be deactivated under the effect of manual traction exerted on the first or second end of said elongate element, said traction enabling the sliding of said elongate element between said orifices and correlatively the formation of the tightening loop having a second circumference in the active position, the second circumference being less than the first circumference.
