US 12,343,023 B2
Cutting guide for spinal osteotomy
Francesco Siccardi, Castel San Pietro (CH); Meinrad Fiechter, Castel San Pietro (CH); and Yuri Insinna, Castel San Pietro (CH)
Assigned to Medacta International SA, Castel San Pietro (CH)
Appl. No. 18/022,675
Filed by MEDACTA INTERNATIONAL SA, Castel San Pietro (CH)
PCT Filed Aug. 17, 2021, PCT No. PCT/IB2021/057547
§ 371(c)(1), (2) Date Feb. 22, 2023,
PCT Pub. No. WO2022/049435, PCT Pub. Date Mar. 10, 2022.
Claims priority of application No. 102020000020794 (IT), filed on Sep. 1, 2020.
Prior Publication US 2023/0301668 A1, Sep. 28, 2023
Int. Cl. A61B 17/17 (2006.01); A61B 17/56 (2006.01)
CPC A61B 17/1757 (2013.01) [A61B 2017/568 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A cutting guide for spinal osteotomy, comprising two polyhedral blocks, each comprising a respective tubular guide member, each tubular guide member extending from a proximal opening to a distal opening and having an axial cavity, to guide the insertion of a surgical instrument on a patient's vertebra, extending along a longitudinal axis; a connecting bridge, which connects said two polyhedral blocks to each other, adapted to surmount a spinous process of said vertebra; and contact members designed to match a corresponding plurality of surfaces or points of contact on the patient's vertebra in order to define a unique coupling configuration of the cutting guide on the patient's vertebra; wherein said polyhedral blocks each comprise at least a first and a second slotted body, said first and second slotted body being associated in pairs with a respective tubular guide member and being arranged one opposite the other with respect to the corresponding tubular guide member associated therewith, said first and second slotted bodies having respective extension surfaces, which define cutting planes, converging below the proximal opening of the respective tubular guide member.