Abstract: A ligature and/or suture system for endoscopic surgery, comprising, in combination: a tie for ligature or for suture, slidably mounted in the longitudinal channel of a separate tubular endpiece; and a rigid support including a handle secured to an elongate rod which is provided at its proximal end remote from the handle with a reception cradle suitable for removably receiving the tubular endpiece, and with a through lateral window whereby said cradle opens out to the outside of the support to enable the tie to pass therethrough such that traction exerted on the distal end of the tie relative to the support serves to tighten the ligature or the suture.

Abstract: The invention describes a pulmonary embolism prevention filter of the type made from an elastic wire with remanent spring effect, characterized int hat it comprises at least two wires (100, 200), each spirally shaped. The said two wires (100, 200) have at least substantially the same length and are connected in the vicinity of their ends.