US 12,268,429 B2
Device for tensioning a surgical thread and bone cerclage kit
Massimiliano Bernardoni, Castel San Pietro (CH); Francesco Siccardi, Castel San Pietro (CH); and Ermete Rossi, Castel San Pietro (CH)
Assigned to Medacta International SA, Castel San Pietro (CH)
Appl. No. 17/996,363
Filed by MEDACTA INTERNATIONAL SA, Castel San Pietro (CH)
PCT Filed Apr. 14, 2021, PCT No. PCT/IB2021/053061
§ 371(c)(1), (2) Date Oct. 17, 2022,
PCT Pub. No. WO2021/209909, PCT Pub. Date Oct. 21, 2021.
Claims priority of application No. 102020000007894 (IT), filed on Apr. 15, 2020.
Prior Publication US 2023/0218330 A1, Jul. 13, 2023
Int. Cl. A61B 17/88 (2006.01); A61B 17/82 (2006.01)
CPC A61B 17/8869 (2013.01) [A61B 17/82 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A device for tensioning a surgical thread comprising:
an elongated body extending along a longitudinal axis, the elongated body having a tip portion adapted to contact a knot of a surgical thread wound about a patient's bone; and
a maneuvering member connected to said elongated body, said maneuvering member adapted to be arranged outside the patient's body and having respective coupling portions for coupling opposite ends of said surgical thread wound and knotted about said bone, said opposite ends of the surgical thread being reversibly constrainable to said respective coupling portions in a use configuration of the device;
wherein said elongated body is connected to said maneuvering member by means of a screw and nut mechanism configured to adjust the distance between said elongated body and said maneuvering member;
wherein a distance between said elongated body and said maneuvering member can be increased along a movement axis coinciding with the longitudinal axis; to tension the opposite ends of the surgical thread so as to tighten the surgical thread about the bone;
wherein said tip portion has a groove shaped to at least partially receive said knot in the use configuration of the device, said groove extending perpendicularly to the movement axis and opening on opposite sides of a sidewall of said elongated body to define respective return portions along which the opposite ends of the surgical thread can be returned toward the coupling portions;
wherein the opposite ends of the surgical thread can be arranged tangentially to the bone over a first stretch between the return portions inside the groove, and transversely to said bone along respective second stretches, having a greater length than the first stretch, between the return portions and the coupling portions.