Abstract: The invention relates to a dynamic cervical disk prosthesis (1) comprising two upper (11) and lower (12) rigid plates containing a viscoelastic element (10), said upper and lower plates (11 and 12) having a slightly cambered and striated contact face, the main characteristic of this invention being that the lower plate (12) is in the form of a housing, compatible with a twist-lock of the upper plate (11) while allowing the mobility and damping of the two plates (11 and 12) around the viscoelastic element (10) that can be freely distorted thereby avoiding all risk of detachment of the prosthesis when subjected to applied forces.

Abstract: A dynamic intervertebral stabilization device (1) comprising the following elements: an upper hook (10), a lower hook (13), a hollow cylindrical body (14), a viscoelastic element, as well as an upper hook (10) integrating a piston (11), which is braced with a minimum of contact on the viscoelastic element, which permits upper (10) and lower (13) hooks to be moved in multiaxial manner within a solid angle (?) while absorbing deformations in compression and in flexion by virtue of the damping produced by the viscoelastic element.

Abstract: A dynamic intervertebral stabilization device (1) comprising the following elements: an upper hook (10), a lower hook (13), a hollow cylindrical body (14), a viscoelastic element, as well as an upper hook (10) integrating a piston (11), which is braced with a minimum of contact on the viscoelastic element, which permits upper (10) and lower (13) hooks to be moved in multiaxial manner within a solid angle (?) while absorbing deformations in compression and in flexion by virtue of the damping produced by the viscoelastic element.

Abstract: Adjustable base piece (1) that can be incorporated into a prosthesis replacing the corpus vertebrae and comprising—a plate (11) positioned in contact with an internal face of the adjacent corpus vertebrae; —a curved panel (12) that can be adjusted in multiple directions by virtue of a ball stem (120) housed in a head (111) of the plate (11) which allows it to adopt the optimal angle with respect to this fixed plate (11), so that the said curved panel (12), thanks to its possibilities of multi-axis adjustment, can press espousing the external shape of the corpus vertebrae adjacent to the prosthesis, —a clamping plug (13) which, once tightened, fixes the panel (12) to the plate (11) in the desired position, thus allowing this adjustable base piece (1) to be simultaneously in contact with an internal surface of the adjacent corpus vertebrae, thus giving this base piece, once attached to the corpus vertebrae, great bearing stability, with good adaptation to suit all shapes of vertebra encountered in real life.

Abstract: The invention relates to a dynamic cervical disk prosthesis (1) comprising two upper (11) and lower (12) rigid plates containing a viscoelastic element (10), said upper and lower plates (11 and 12) having a slightly cambered and striated contact face, the main characteristic of this invention being that the lower plate (12) is in the form of a housing, compatible with a twist-lock of the upper plate (11) while allowing the mobility and damping of the two plates (11 and 12) around the viscoelastic element (10) that can be freely distorted thereby avoiding all risk of detachment of the prosthesis when subjected to applied forces.

Abstract: The a device is provided for dynamic posterior stabilization. The device combines includes a mobile piston rod with a piston head at an end thereof; a viscoelastic shock-absorbing unit having a convex surface; a fixed rod defining an angle relative to an axis of a casing and the fixed rod including, at an end thereof, a concave surface; a viscoelastic ring; and wherein the viscoelastic components are contained within the casing.

Abstract: Adjustable base piece (1) that can be incorporated into a prosthesis replacing the corpus vertebrae and comprising—a plate (11) positioned in contact with an internal face of the adjacent corpus vertebrae; —a curved panel (12) that can be adjusted in multiple directions by virtue of a ball stem (120) housed in a head (111) of the plate (11) which allows it to adopt the optimal angle with respect to this fixed plate (11), so that the said curved panel (12), thanks to its possibilities of multi-axis adjustment, can press espousing the external shape of the corpus vertebrae adjacent to the prosthesis, —a clamping plug (13) which, once tightened, fixes the panel (12) to the plate (11) in the desired position, thus allowing this adjustable base piece (1) to be simultaneously in contact with an internal surface of the adjacent corpus vertebrae, thus giving this base piece, once attached to the corpus vertebrae, great bearing stability, with good adaptation to suit all shapes of vertebra encountered in real life.

Abstract: The invention relates to a device (2) for dynamic posterior stabilisation that matches the anatomic lordosis and combines rigid means and viscoelastic means housed in a casing (21), including: a mobile piston rod (20) comprising a piston head at the end thereof; a viscoelastic shock-absorbing unit (23) having a convex surface; a fixed rod (22) defining an angle (?) relative to the axis of the casing (21) and including at the end thereof a concave surface that perfectly matches the convex surface of the viscoelastic shock-absorbing unit (23); a viscoelastic ring (24) provided without preload and with optimised clearance inside the casing (21) containing the viscoelastic means (23, 24); wherein these novel means enable the device (2) to define an angle (?) in a neutral position between the two fastening elements thereof to the pedicle screws, and to apply a permanent elastic-return force about this position while absorbing the compression and bending forces applied onto the pedicle screws.

Abstract: A flexible intervertebral linking device (1) is provided. The device (1) utilizes two sets of structures. A first structure (11) is a rigid structure (110, 112, 114, 116) preferably made of biocompatible metallic materials providing the device with good mechanical resistance by integral load transmission without deformation. A second structure (12) is a flexible or damping structure (121 and 122) made of biocompatible viscoelastic materials, permitting repeated elastic deformations. The combination of the two structures providing the device with both resistance and mechanical dampening of forces to which it is subjected, with the purpose of compensating for any deficiency in the flexibility of certain anatomical links of the human body.

Abstract: A flexible intervertebral linking device (1) is provided. The device (1) utilizes two sets of structures. A first structure (11) is a rigid structure (110, 112, 114, 116) preferably made of biocompatible metallic materials providing the device with good mechanical resistance by integral load transmission without deformation. A second structure (12) is a flexible or damping structure (121 and 122) made of biocompatible viscoelastic materials, permitting repeated elastic deformations. The combination of the two structures providing the device with both resistance and mechanical dampening of forces to which it is subjected, to compensate for any deficiency in the flexibility of certain anatomical links of the human body.

Abstract: The invention concerns a distraction device (4) for controlling the development of the deformation of a child's trunk during growth easily implantable into the human body and comprising rods (35, 36) coupled to the bones and mounted on central adjusting means (300) provided with a small hole (312) for engaging a small tool designed to adjust the distance separating the bone coupling means, said device (4) including a miniature casing (410) enabling the rods (35 and 36) to be translated in the direction of growth via a toothed wheel (311), said means being combined with an assembly of means: non-return catch (37), elastomer block (373), rigid cage (374) which enable the device (4) to be disengaged, tensioned and locked in one direction, while allowing growth to be monitored.

Abstract: A device (3) used to fit a nucleus prosthesis made up of: a deformable elastic nucleus prosthesis (1) which can adapt to the shape of intervertebral cavities, the prosthesis consisting of two parts, namely a male part (11) and a female part (12); and an insertion assembly (2) which is connected to the nucleus prosthesis (1). The elastic deformation of the nucleus prosthesis (1) makes it possible for the prosthesis to be inserted into the intervertebral cavity. The prosthesis is inserted using the elasticity thereof and the insertion means (2) which form part of the device (3) before insertion, but which can be subsequently removed.

Abstract: The invention concerns a flexible intervertebral linking device (1) consisting of two sets of means. A first set of means (11) consisting of rigid means (110, 112, 114, 116) preferably made of biocompatible metallic materials providing the device with good mechanical resistance by integral load transmission without deformation. A second set of means (12) consisting of flexible or damping means (121 and 122) made of biocompatible viscoelastic materials, admitting repeated elastic deformations, the combination of said two sets of means providing it with both resistance and mechanical stress damping whereto it is subjected, to compensate for any deficiency of flexible anatomical links of the human body.

Abstract: A flexible intervertebral linking device (1) utilizes two sets of structures. A first structure (11) is a rigid structure (110, 112, 114, 116) preferably made of biocompatible metallic materials providing the device with good mechanical resistance by integral load transmission without deformation. A second structure (12) is a flexible or damping structure (121 and 122) made of biocompatible viscoelastic materials, permitting repeated elastic deformations, the combination of the two structures providing the device with both resistance and mechanical stress damping of forces to which it is subjected, with the purpose of compensating for any deficiency in the flexibility of certain anatomical links of the human body.

Abstract: The invention relates to a device (3) that is used to fit a nucleus prosthesis comprising: a deformable elastic nucleus prosthesis (1) which can adapt to the shape of intervertebral cavities, said prosthesis consisting of two parts, namely a male part (11) and a female part (12); and an insertion assembly (2) which is connected to the nucleus prosthesis (1). The elastic deformation of the inventive nucleus prosthesis (1) makes it possible for the prosthesis to be inserted into the intervertebral cavity. According to the invention, said prosthesis is inserted using the elasticity thereof and the insertion means (2) which form part of the device (3) before insertion but which can be subsequently removed. The invention also relates to different forms of prosthesis and insertion devices.