Device for anchoring a suture in tissue

摘要

A device for the anchoring of a suture in tissue includes a guide sleeve, a sonotrode, an anchor and the suture. The guide sleeve has a distal part with a smaller cross section and a proximal part with a larger cross section. The sonotrode extends through the lumen of the guide sleeve and has a distal end and a proximal end, the proximal end being designed for coupling the sonotrode to a vibration source (e.g. an ultrasonic device). The anchor is arranged at the distal end of the device and includes an anchor foot and an anchoring sleeve sitting on a shoulder of the anchor foot. The anchoring sleeve consists of a material which is liquefiable through mechanical vibrations. A middle portion of the suture runs through the anchor foot and two end portions of the suture are attached to the guide sleeve.

主权项

1. A device for the anchoring of a suture in bone tissue, which device comprises:
a suture anchor, the suture anchor comprising an anchor foot with a distally-facing shoulder, an anchoring sleeve with an axially extending through-going sleeve lumen open towards a distal side, the anchoring sleeve sitting against the shoulder, the anchoring sleeve comprising a material which is liquefiable by mechanical vibrations, wherein the anchoring sleeve forms a proximally-facing coupling-in surface for coupling to a sonotrode; and, a suture, the suture forming a loop in the anchor foot and running proximally of the loop through the sleeve lumen, the suture exiting the sleeve lumen at the proximal end of the anchoring sleeve radially inside of the coupling-in surface; wherein the material of the anchoring sleeve is capable of being liquefied at least partially by the mechanical vibrations and is arranged for being forced to flow out and penetrate surrounding bone tissue and thereby anchoring the anchor in the bone tissue, and wherein the anchor foot comprises a shank part and a foot part, wherein the foot part is attached or attachable to the distal end of the shank part, wherein the shank part is substantially tubular, and wherein the suture runs through the shank part in an axial direction.