Abstract: Computer implemented method, computing device, system and computer pro-gram product to support selection between different types of pedicle screws (201-m) to be applied in a spine (202) comprising: generating a spinal 3D-model (MSpine) of a patient; generating a reinforcement 3D-model (MRod) of a reinforce-5 ment structure (30) for interconnecting vertebrae (2001-n) of the spine (202); generating a finite element model (FE) corresponding to the spinal 3D-model (MSpine) and the reinforcement 3D-model (MRod); applying a load onto the finite element model (FE) and determining loading factor(s) of the pedicle screws (201-m) using the finite element model (FE); and outputting an assessment of the plurality of different types of pedicle screws (201-m) based on the calculated loading factor(s).

Abstract: A computer-implemented method, computing device, system and computer program product for assisting positioning of a tool (5) with respect to a specific body part (202) of a patient (200) comprising: receiving intraoperative imaging data (ID) comprising 2D images capturing the specific body part (202) from a plurality of perspectives and 2D image(s) capturing at least a part of the tool (5) from at least one perspective; reconstructing an anatomical 3D shape (AS) of the specific body part (202) using an artificial-intelligence based algorithm corresponding to the specific body part (202) based on the intraoperative imaging data (ID) and data indicative of perspectives of 2D images; estimating a current position (5c) of the tool (5) with respect to the anatomical 3D shape (AS) based on the intraoperative imaging data (ID); and generating positioning guidance data (GD) comprising the estimated current position (5c) of the

Abstract: Vertebral stabilization techniques labelled “vertebropexy” can be used after microsurgical decompression (intact posterior structures) and midline decompression (removed posterior structures). Vertebropexy is a concept of semi-rigid spinal stabilization based on reinforcement of the spinal segment and is able to reduce motion, especially in flexion-extension.

Abstract: Vertebral stabilization techniques labelled “vertebropexy” can be used after microsurgical decompression (intact posterior structures) and midline decompression (removed posterior structures). Vertebropexy involves semi-rigid spinal stabilization based on reinforcement of the spinal segment and is able to reduce motion, especially in flexion-extension.

Abstract: A method of injecting a foldable implant (1) into a body cavity of a patient includes the step of providing the foldable implant (1). The method further includes the step of injecting the provided implant (1) in an unfolded state into the body cavity, wherein in the unfolded state the implant (1) is essentially straight extending along a longitudinal axis (L). The method further includes the step of folding the injected implant (1) from the unfolded state into a folded state, wherein in the folded state the implant (1) has a plurality of loops (2) each extending radially from a fold center (3).

Abstract: The present disclosure relates to an expandable intervertebral cage (1) with a base (2) comprising a peripheral circumferential side wall (7) extending in a first direction (x) and a first bone interaction surface (5); a stage (3) comprising a second bone interaction surface (6) arranged essentially opposite to the first bone interaction surface (5) with respect to the expandable intervertebral cage (1); and a locking mechanism (4) for locking the position of the second bone interaction surface (6) of the stage (3) with respect to the first bone interaction surface (5) of the base (2) at least in the first direction (x) and being arranged at least partially within the circumferential side wall (7) of the base (2).

Abstract: A method for determining the screw trajectory of a pedicle bone screw comprises: obtaining a CT image of the target bone area intended to receive the pedicle bone screw, establishing an individualized three-dimensional geometric model of the target bone area based on the CT image, accessing a database comprising a three-dimensional bone area model; wherein the bone area model comprises a bone screw insertion surface and a pedicle traversing surface for each pedicle, morphing the bone area model to the geometric model of the target bone area generating a morphed vertebra model with a bone screw insertion surface and the pedicle traversing surface, calculating a maximum of bone density when the bone material is replaced by a bone screw for a bone screw in the morphed vertebra model of the target bone, and outputting the space vector of the screw trajectory for the bone screw together with the length and diameter of the bone screw in the morphed vertebra model of the target bone.

Abstract: The present disclosure relates to an expandable intervertebral cage (1) comprising a base (2) with a circumferential side wall (7) extending in a first direction (z) and a first bone interaction surface (5) and a stage (3) comprising a second bone interaction surface (6) arranged essentially opposite to the first bone interaction surface (5) with respect to the expandable intervertebral cage (1). An expansion mechanism (4) serves for adjusting the position of the second bone interaction surface (6) of the stage (3) with respect to the first bone interaction surface (5) of the base (2) at least in the first direction (z). The expansion mechanism (4) is thereby arranged at least partially within the circumferential side wall (7) of the base (2).

Abstract: A method for supporting medical interventions using an augmented reality system is disclosed, which comprises determining, using a position marker and an electronic tracking system, positions of a set of points; calculating a geometric shape using the determined positions of the set of points; and displaying, on an optical head mounted display the calculated geometric shape in the field of view of a bearer of the display. Furthermore, a system and a position marker adapted to be used for this method are disclosed.

Abstract: A computer implemented method of assisting bending of a reinforcing rod (10) includes the steps of receiving spatial positions (P1-n) of chirurgical implants (201-n), in particular pedicle screws, captured by a camera-based positioning device (50), the chirurgical implants (201-n) configured to attach to the reinforcing rod (10); calculating a rod shape (10c) corresponding to the spatial positions (P1-n), allowing the chirurgical implants (201n) to be attached to the reinforcing rod (10); based on the calculated rod shape (10c), calculating a sequence of bending parameter set(s); and generating tool operation guidance for bending tool(s) (70) based on the bending parameter set(s), the tool operation guidance indicating a sequence of prescribed operation steps (S1-n), wherein the sequence of prescribed operation steps (S1-n) are determined such, that when carried out using the bending tool(s) (70), causes the bending tool(s) (70) to shape the reinforcing rod (10) corresponding to the calculated rod shape (10c)

Abstract: A method for monitoring and maintaining the sterility of objects in an operation room (1) is proposed, comprising: •registering target objects (3) and reference objects (4); •attributing to each target object (3) a set of reference objects (4); •attributing to each target object (3) a forbidden zone (90) and/or an allowed zone (91) based on a space occupied by the reference objects (4) attributed to this target object (3); tracking the target objects (3) and the reference objects (4); •determining, using data of the tracking, if a violation has occurred, the violation comprising that at least a part of a target object (3)—has entered the forbidden zone (90) attributed to that target object (3), and/or—has left the allowed zone (91) attributed to that target object (3). Furthermore, a surveillance system for performing this method is proposed.

Abstract: An augmented reality system for displaying a medical image (in particular an image stream) and a respective method are disclosed. The augmented reality system includes an optical head mounted display, a medical imaging device, a tracking system that is adapted to measure data concerning a position and orientation of at least one object, and a processing unit. The processing unit is configured to transform an image from a coordinate system in which the image was taken to a coordinate system of the display. This transformation is performed using data measured by the tracking system, where the ARS is adapted to display the transformed image on the display in a position, orientation and scale that corresponds to the perspective of a position and orientation of the bearer of the display.

Abstract: A method for supporting medical interventions using an augmented reality system is disclosed, which comprises determining, using a position marker and an electronic tracking system, positions of a set of points; calculating a geometric shape using the determined positions of the set of points; and displaying, on an optical head mounted display the calculated geometric shape in the field of view of a bearer of the display. Furthermore, a system and a position marker adapted to be used for this method are disclosed.

Abstract: A graft anchor has first and second arms each having a leading end, a trailing end, an inner surface, and an outer bone contactable surface. The graft anchor also has a resilient bridge extending between the inner surface of the first arm and the inner surface of the second arm to space apart the first arm and the second arm. The resilient bridge defines a graft receiving pathway between the inner surfaces of the first and second arms. The resilient bridge also defines a deflection point about which a force acting upon the resilient bridge in a direction from the leading end to the trailing end causes the leading ends of the first and second arms to move toward one another and the trailing ends of the first and second arms to move away from one another.

Abstract: A graft anchor has first and second arms each having a leading end, a trailing end, an inner surface, and an outer bone contactable surface. The graft anchor also has a resilient bridge extending between the inner surface of the first arm and the inner surface of the second arm to space apart the first arm and the second arm. The resilient bridge defines a graft receiving pathway between the inner surfaces of the first and second arms. The resilient bridge also defines a deflection point about which a force acting upon the resilient bridge in a direction from the leading end to the trailing end causes the leading ends of the first and second arms to move toward one another and the trailing ends of the first and second arms to move away from one another.

Abstract: A graft anchor has first and second arms each having a leading end, a trailing end, an inner surface, and an outer bone contactable surface. The graft anchor also has a resilient bridge extending between the inner surface of the first arm and the inner surface of the second arm to space apart the first arm and the second arm. The resilient bridge defines a graft receiving pathway between the inner surfaces of the first and second arms. The resilient bridge also defines a deflection point about which a force acting upon the resilient bridge in a direction from the leading end to the trailing end causes the leading ends of the first and second arms to move toward one another and the trailing ends of the first and second arms to move away from one another.

Abstract: A graft anchor has first and second arms each having a leading end, a trailing end, an inner surface, and an outer bone contactable surface. The graft anchor also has a resilient bridge extending between the inner surface of the first arm and the inner surface of the second arm to space apart the first arm and the second arm. The resilient bridge defines a graft receiving pathway between the inner surfaces of the first and second arms. The resilient bridge also defines a deflection point about which a force acting upon the resilient bridge in a direction from the leading end to the trailing end causes the leading ends of the first and second arms to move toward one another and the trailing ends of the first and second arms to move away from one another.

Abstract: The present invention relates to methods and devices for the modelling tendinous tissue into a desired shape. The shaped tissue produced by the methods of the present invention is useful in any field relating to biological tissue, particularly in the field of medicine, most preferred in surgery, for intraoperative use or pre- or peri-operative preparation of the tissue.

Abstract: An articular cavity prosthesis comprises a block extending along a central axis and including a top section and a base section, the top section having an articular bearing surface extending transverse to the central axis and a supporting surface opposite the articular bearing surface configured to contact a surface of a bone on which the block is to be mounted, the base section having a fixing protrusion protruding outward from the supporting surface along the central axis and having a volume V, the block being formed of human tissue.