Abstract: A medical implant (1) designed to enable bony fusion between a first bone (20) and a second bone (21), said implant being in the form of an elongate part comprising, extending along the longitudinal axis of the part, a head (2) and a body (3) spaced apart from each other by a connection zone (4) connecting the head (2) to the body (3), said head (2) being suitable for being inserted into the first bone (20), said body (3) being suitable for being inserted into the second bone (21), said body (3) being a hollow body that is slotted longitudinally along at least a portion of its length in order to define at least three elastically deformable longitudinal tabs (5) by means of which said body (3) is suitable for being inserted into the second bone (21). Each longitudinal tab (5) of the body (3) is an arcuate tab (5) that presents an outer face (6), i.e.

Abstract: A polyaxial bone fastener assembly (1) comprising a plate (2) with at least one through orifice (3), and at least one fastener screw (4) for fastening the plate (2) to a bone, the body (6) of the screw (4) being suitable for passing through the orifice (3), and its head (5) being suitable for being retained in the orifice (3) of the plate (2) by bearing contact between complementary male and female spherical surfaces (7, 8), the female spherical surface (8) that is arranged in the orifice (3) of the plate (2) forming a seat within which the male spherical surface (7) is suitable for coming to bear when the screw (4) is inserted in the orifice (3).

Abstract: A subtalar implant for arthroereisis of the talocalcaneal joint. The implant is intended to be inserted into the talocalcaneal joint via its lateral orifice and has an oblong shape that extends longitudinally along an axis of insertion of the implant. The implant includes: a head with the shape of a cone of revolution centred on the axis of insertion; an anchoring thread; and a rod having the shape of a cylinder of revolution. The rod has, on its surface, the anchoring thread and being configured to be inserted up to the axis of rotation of the talocalcaneal joint. The head has, on its radially outer surface, a retaining element for retaining the implant in rotation about the axis of insertion, the retaining element exerting retention against a colonising tissue.

Abstract: A polyaxial bone fastener assembly (1) comprising a plate (2) with at least one through orifice (3), and at least one fastener screw (4) for fastening the plate (2) to a bone, the body (6) of the screw (4) being suitable for passing through the orifice (3), and its head (5) being suitable for being retained in the orifice (3) of the plate (2) by bearing contact between complementary male and female spherical surfaces (7, 8), the female spherical surface (8) that is arranged in the orifice (3) of the plate (2) forming a seat within which the male spherical surface (7) is suitable for coming to bear when the screw (4) is inserted in the orifice (3).

Abstract: A medical implant (1) designed to enable bony fusion between a first bone (20) and a second bone (21), said implant being in the form of an elongate part comprising, extending along the longitudinal axis of the part, a head (2) and a body (3) spaced apart from each other by a connection zone (4) connecting the head (2) to the body (3), said head (2) being suitable for being inserted into the first bone (20), said body (3) being suitable for being inserted into the second bone (21), said body (3) being a hollow body that is slotted longitudinally along at least a portion of its length in order to define at least three elastically deformable longitudinal tabs (5) by means of which said body (3) is suitable for being inserted into the second bone (21). Each longitudinal tab (5) of the body (3) is an arcuate tab (5) that presents an outer face (6), i.e.

Abstract: A subtalar implant for arthroereisis of the talocalcaneal joint. The implant being intended to be inserted into the talocalcaneal joint via its lateral orifice and having an oblong shape that extends longitudinally along an axis of insertion of the implant. The implant includes: a head with the shape of a cone of revolution centred on the axis of insertion; an anchoring thread; and a rod having the shape of a cylinder of revolution. The rod has, on its surface, the anchoring thread and being intended to be inserted up to the axis of rotation of the talocalcaneal joint. The head has, on its radially outer surface, a retaining element for retaining the implant in rotation about the axis of insertion, the retaining element being exerting retention against a colonising tissue.

Abstract: The present invention relates to a surgical instrument for a technique for attaching bone fragments using a cannulated screw, the implantation of which is guided by a pin. The instrument (1) comprises: (i) a central channel (5) defining a longitudinal axis (6), enabling the slidable and rotatable insertion of said instrument (1) onto said guide pin; (ii) a nesting structure (15) suitable for being inserted into a recess made in the head of said cannulated screw and for blocking the rotation thereof; (iii) cutting edges (20, 21) suitable for boring at least one of said bone fragments by rotating said surgical instrument (1) about said longitudinal axis (6); and (iv) a means (11) for gauging the insertion depth of said guide pin in said bone fragments.

Abstract: The present invention relates to a surgical instrument for a technique for attaching bone fragments using a cannulated screw, the implantation of which is guided by a pin. The instrument (1) comprises: (i) a central channel (5) defining a longitudinal axis (6), enabling the slidable and rotatable insertion of said instrument (1) onto said guide pin; (ii) a nesting structure (15) suitable for being inserted into a recess made in the head of said cannulated screw and for blocking the rotation thereof; (iii) cutting edges (20, 21) suitable for boring at least one of said bone fragments by rotating said surgical instrument (1) about said longitudinal axis (6); and (iv) a means (11) for gauging the insertion depth of said guide pin in said bone fragments.