Abstract: In order to simplify the construction and handling capability of a surgical retaining screw comprising a shaft which has an external thread, a head part which is connected to the shaft securely or movably and has an interior space open towards the upper side located opposite the shaft as well as two openings which are arranged on oppositely located sides of the head part, are open towards the upper side and form a receptacle for a bar-like connecting part, and a clamping screw which can be screwed into the interior space from the upper side in such a manner that it clamps a connecting part placed in the receptacle in this receptacle, it is suggested that the clamping screw be screwed into a screw sleeve which abuts with a conical outer surface tapering towards the upper side of the head part on the complementary conical inner surface of a bearing sleeve surrounding the screw sleeve and that the bearing sleeve be held on the head part to as to be secured against any displacement in the direction towards the up

Abstract: In one aspect, a bone anchor assembly is provided. The bone anchor assembly includes a bone anchor, a crown member, a saddle, and a sleeve. The bone anchor assembly is configured such that the bone anchor is moveable with respect to the saddle when the sleeve is positioned around the saddle and the bone anchor is locked relative to the saddle by compression of the head portion of the bone anchor between the crown member and a seat of the saddle. In another aspect, a system for orthopedic implantation is provided. The system includes an elongated member, a compression member, and a bone anchor assembly. In another aspect, a method of assembling a bone anchor assembly is provided.

Abstract: A bone anchor assembly for coupling an offset bone anchor with a previously inserted spinal fixation element and method of use is provided. Exemplary embodiments of a bone anchor assembly are particularly suited for use in a rod-first spinal surgical technique in which a bone anchor inserted into a patient vertebra may be separated from a previously inserted spinal fixation element by a separation distance.

Abstract: A medical implant assembly includes a polyaxial bone anchor having a shank, a receiver, a lower compression insert with surfaces for closely receiving an elongate connecting member and a dual closure structure that may include a single flange or helical flange. The dual closure structure independently engages the connecting member and the lower compression insert. A threaded capture connection of the bone anchor includes a shank upper surface exclusively engaging the lower compression insert and a retainer threadably attached to the shank and spaced from the upper surface, the retainer configured for polyaxial motion with respect to the receiver prior to locking.

Abstract: In order to simplify the producibility of a surgical retaining system comprising a head part and a threaded shaft which is mounted thereon so as to be pivotable, passes through an opening in the underside of the head part and has on its upper side a spherical thickened area which engages in an interior space of the head part, which is open upwards, and can be moved in the direction towards the underside of the interior space by a clamping device arranged on the head part and thereby fixed in position relative to the head part, it is suggested that the opening in the underside of the head part be of a cylindrical design and have an inner diameter which is slightly smaller than the outer diameter of the spherical thickened area so that the spherical thickened area, during insertion into the opening, is pressed into the cylindrical opening with the aid of the clamping device and is secured in the opening against any pivoting movement.

Abstract: The present invention provides an implant that can be inserted on top of a previously placed spinal fixation element. The implant includes a bone anchor and a connector body. The bone anchor includes a proximal head and a distal shaft extending along a longitudinal axis configured to engage bone. The connector body is configured to engage the proximal head of bone anchor and engage a spinal fixation element offset from longitudinal axis of the bone anchor shaft. Because, the implant is inserted over the spinal fixation element, direct visualization of the surgical site is available during insertion. In addition, the implant may provide tactile or audible feedback indicating that the spinal fixation element has been engaged by the implant.

Abstract: A polyaxial bone screw assembly includes a threaded shank body having an upper capture structure, a receiver and a retainer having spherical inner and outer surfaces. The retainer is compressible, having an opening with two ends that may be pressed toward one another. The retainer spherical surfaces slidingly mate with both the receiver and the capture structure, providing multiple or compound polyaxial articulation.

Abstract: A device for repairing a rotator cuff tendon injury provides a robust means for reattaching the rotator cuff tendon to the underlying humeral head. The device includes a suture-retaining device and an anchor that is mechanically coupled to a cortex of the humerus and the suture-retaining device. The anchor is attached to the cortex of the humerus to provide a robust means of holding the rotator cuff tendon in the desired position against the humeral head. The suture-retaining device, which is positioned in the intramedullary cavity of the humerus, allows a plurality of sutures that are sewn into the rotator cuff tendon to be tied thereto, and allows any suture knots to be located inside the intramedullary cavity.

Abstract: A bone anchoring device includes a bone anchoring element having a shaft for anchoring in the bone and a head; and a receiving part for coupling a rod to the bone anchoring element. The receiving part includes a first portion with a first end and a second end and a U-shaped recess for receiving the rod, the recess extending from the first end in the direction of the second end thereby forming two free legs and a second portion at the side of the second end opposite to the first end for accommodating the head, the second portion having a free end and being flexible so as to allow introduction and clamping of the head. The bone anchoring device also includes a locking ring embracing the second portion. The head is locked by means of exerting pressure with the rod onto the locking ring resulting in compression of the second portion of the receiving part and wherein the locking ring is mounted to the receiving part from the free end of the second portion.

Abstract: An intervertebral stabilizing device adapted to stabilize two or more vertebral bodies one another. The device comprises two fastening elements adapted to be associated to two vertebral bodies being contiguous to each other and a junction element operatively connecting the two fastening elements. The fastening elements and the junction element gradually distribute the stresses both on the peduncles and the spinous bones of the adjacent vertebrae, so as to gradually and continuously stress the column length, thus avoiding sudden changes in load and stiffness in the borderline zones.

Abstract: A polyaxial bone screw assembly includes a threaded shank body having an upper capture structure, a head and a closed retainer ring. The external capture structure surface and retainer ring internal bore surface are both threaded for rotatable attachment within a cavity of the head. The head has a U-shaped cradle defining a channel for receiving a spinal fixation rod. The head channel communicates with the cavity and further with a restrictive opening that allows for loading the capture structure into the head but prevents passage of the closed retainer ring out of the head. The retainer ring has an external substantially spherical surface that mates with an internal surface of the head, providing a ball joint, enabling the head to be disposed at an angle relative to the shank body. The threaded capture structure or the closed retainer structure includes a tool engagement formation and gripping surfaces for non-slip engagement by a tool for driving the shank body into bone.

Abstract: A fixation device for bones includes a member which is to be fixed to one or more bones and has at least one bore for receiving a bone screw, wherein the at least one bore comprises a first internal thread portion. The bone screw has a first shaft section provided with a first external thread portion arranged to cooperate with the internal thread portion of the at least one bore, and a head section having a diameter larger than that of the shaft section to provide a catch arranged to engage with a stop formed in the bore. The bone screw further has a second shaft section which includes a clearance groove extending between the catch of the head section and the external thread of the first shaft section. The clearance groove allows disengagement of the two thread portions, such that the bone screw is prevented from being unscrewed off the bore when it is loosened within the adjacent bone.

Abstract: A surgical implant assembly and a method for securing a fixation rod, where the assembly is capable of being secured to a bone structure are disclosed. The assembly includes at least two rigid structures configured to be secured to the bone structure. The structures include a distal portion for receiving a portion of the fixation rod therebetween, a tab positioned at a distal point of the distal portion, a screw compression nut and a distal expansion member coupled to the screw compression nut that are driven down the rigid structures, and a rod compression nut and a proximal expansion member coupled to the rod compression nut that engage the rigid structures so that the fixation rod is disposed between the combination the screw compression nut and the distal expansion member and the combination of the rod compression nut and the proximal expansion member.

Abstract: A spinal fixation system is provided that includes a coupling member and a locking device that is operable to fix an elongate member relative to the coupling member. In one form, locking device includes opposing lock arms operable to retain the locking device relative to the coupling member in an initial position prior to the locking device fixing the elongate member relative to the coupling member. In another form, the coupling member and locking device include cooperating structure therebetween in the form of a protrusion and a guide track, the cooperating structure arranged and configured to retain the locking device within an internal space of the coupling member. There is also provided a retainer operable to minimize pivoting of the coupling member relative to an anchor member and to substantially retain an anchor member depressed within an internal space of the coupling member to minimize play therebetween.

Abstract: Spinal fusion system and method utilizing an implant and screw, wherein at least one pawl is mounted on or integral with the screw to prevent said plate or screw from moving in at least one of an axial direction or a rotational direction.

Abstract: A fastener and a bone fixation assembly for the internal fixation of vertebral bodies such as a pedicle screw is provided which allows a detachable tulip to be provisionally locked to a pedicle screw, while separately, the rod securely locks to the tulip. According to one exemplary embodiment, the tulip assembly includes a tulip body and an inner tulip member, the tulip body having a non-circular surface disposed on an outer surface. Additionally, a fastener is coupled to the tulip assembly and positionable to retain the tulip assembly on the head of a screw. Further, a cap having an outer surface and a plurality of inner protrusions is provided, wherein the plurality of inner protrusions are configured to mateably connect to the non-circular surface on the tulip body to compress the tulip assembly and secure a rod.

Abstract: An improved distraction bone screw and a method for its use are described. The distraction screw is comprised of an implantable distal segment and a detachably secured proximal segment. The distal segment includes a head portion and a threaded shank portion. The proximal segment is represented as an elongated body having an internal bore that extends through its length. A deployable member is disposed within the bore, which is extendible outside the internal bore to securely couple to the distal segment. As an assembly, the distraction screw is used to affix and realign bone during surgical reconstruction. Upon completion of the surgical work, the proximal segment is removed and the distal segment is left attached to the reconstructed bone. Securely affixed, the distal segment provides an additional point of fixation for the skeletal plates that are used to preserve the bony alignment while bone healing occurs.

Abstract: A locking assembly for securing a rod in a receiving part of a bone anchoring device includes a first locking element having a first end and a second end and a longitudinal axis of rotation and an outer surface provided with an external thread, a coaxial bore passing entirely through said first locking element and an internal thread provided at said bore, a second locking element having a: longitudinal axis of rotation and an outer surface with an external thread cooperating with the internal thread of said first locking element. The first locking element has a recess between the first end and the second end, that defines a circumferentially closed wall portion. The interior of the wall portion has a longitudinally extending structure for engagement with a tool. Furthermore, a tool is provided which has sections which can be independently engaged with the first and second locking element, respectively.

Abstract: A polyaxial screw device and system for spinal fixation and dynamic stabilization. Embodiments of the present disclosure may utilize hinged connections, cam-style mechanisms, and planar connectors to enable surgeons to attach to an implanted bone fastener or connect to an elongated member from a lateral approach for improved accessibility, with a low-profile configuration for improved patient comfort. Embodiments may be implantable using MIS procedures and techniques.

Abstract: A device, is provided for implanting in bony tissue a bone fastener rotatably connected to a collar. The sleeve is configured for threaded connection to the collar and has a central bore aligned with the longitudinal axis of the sleeve for receiving an inner shaft. The inner shaft inserts in the sleeve and has a distal end configured for connection to a portion of the bone fastener, such as an internal hex feature. In some embodiments a movable member may be inserted in an opening transverse the central bore and positionable to either rotatably or fixedly connect the inner shaft to the sleeve. In other embodiments, a collet nut threads onto a collet thread to radially compress sleeve tangs to frictionally engage inner shaft to sleeve.

Abstract: Embodiments of the disclosure provide a device and system for dynamic spinal stabilization. A collar has an opening for connection to a bone fastener implanted in bony tissue and a slot for receiving a portion of an elongated member. When the elongated member is seated in the slot and a closure member is securely connected to the collar, the collar is capable of selected rotation about the bone fastener to provide dampened motion of the stabilization system.

Abstract: The disclosure relates generally to embodiments of systems and methods of spinal stabilization. Embodiments include methods that use a dilator to displace tissue proximate to a sleeve. An embodiment of a surgical system can comprise a dilator that may define a working channel from a first opening to a second opening. The dilator can be positioned to displace tissue proximate to the sleeve. The dilator may be shaped to allow a first end of an elongated member to enter the working channel through the first opening and exit the dilator through the second opening to be percutaneously moved to another assembly.

Abstract: A medical implant assembly includes a polyaxial bone anchor having a shank, a receiver, a lower compression insert with planar surfaces for closely receiving an elongate connecting member with planar surfaces and a one-piece closure structure. The connecting member is made from a polymer. The closure structure engages both the connecting member and the insert with the engagement between the closure structure and the insert securely locking the polyaxial mechanism even if the connecting member exhibits creep.

Abstract: An implantable bone anchor assembly for fixing an elongated member such as a spinal rod may include a bone anchor, a coupling head configured to receive the bone anchor and the elongated member, and a locking mechanism. The locking mechanism may provide compressive force to simultaneously fix the position of the elongated member and lock out polyaxial rotation of the bone anchor relative to the coupling head. The locking mechanism may include an engagement member with an oblique surface configured to slide along an oblique surface of the coupling head into engagement with the elongated member. The bone anchor may comprise a head portion and a threaded portion which may be coupled with the coupling head and joined together during manufacture. The assembly may further include a pin and/or a collar to retain the bone anchor. The bone anchor may be side-loaded into the coupling head.

Abstract: An implantable bone anchor assembly for fixing an elongated member such as a spinal rod may include a bone anchor, a coupling head configured to receive the bone anchor and the elongated member, and a locking mechanism. The locking mechanism may provide compressive force to simultaneously fix the position of the elongated member and lock out polyaxial rotation of the bone anchor relative to the coupling head. The locking mechanism may include an engagement member with an oblique surface configured to slide along an oblique surface of the coupling head into engagement with the elongated member. The bone anchor may comprise a head portion and a threaded portion which may be coupled with the coupling head and joined together during manufacture. The assembly may further include a pin and/or a collar to retain the bone anchor. The bone anchor may be side-loaded into the coupling head.

Abstract: A polyaxial screw system and method are provided. The system comprises a receiver having a pivot area defined by a pivot joint or a material between a pair of receiver walls or members that permit the receiver walls or members to move or pivot relative to each other so that a dimension of a socket area can be changed. The socket area is defined by socket walls that when at least one of the receiver members pivots relative to another receiver member or wall, a distance between the socket walls gets smaller so that the socket walls can engage and lock against a head of a polyaxial screw.

Abstract: A dynamic stabilization, motion preservation spinal implant system includes an anchor system, a horizontal rod system and a vertical rod system. The systems are modular so that various constructs and configurations can be created and customized to a patient.

Abstract: A dynamic stabilization, motion preservation spinal implant system includes an anchor system, a horizontal rod system and a vertical rod system. The systems are modular so that various constructs and configurations can be created and customized to a patient.

Abstract: A dynamic stabilization, motion preservation spinal implant system includes an anchor system, a horizontal rod system and a vertical rod system. The systems are modular so that various constructs and configurations can be created and customized to a patient.

Abstract: A dynamic stabilization, motion preservation spinal implant system includes an anchor system, a horizontal rod system and a vertical rod system. The systems are modular so that various constructs and configurations can be created and customized to a patient.

Abstract: A dynamic stabilization, motion preservation spinal implant system includes an anchor system, a horizontal rod system and a vertical rod system. The systems are modular so that various constructs and configurations can be created and customized to a patient.

Abstract: A dynamic stabilization, motion preservation spinal implant system includes an anchor system, a horizontal rod system and a vertical rod system. The systems are modular so that various constructs and configurations can be created and customized to a patient.

Abstract: A dynamic stabilization, motion preservation spinal implant system includes an anchor system, a horizontal rod system and a vertical rod system. The systems are modular so that various constructs and configurations can be created and customized to a patient.

Abstract: A dynamic stabilization, motion preservation spinal implant system includes an anchor system, a horizontal rod system and a vertical rod system. The systems are modular so that various constructs and configurations can be created and customized to a patient.

Abstract: The present invention provides minimally invasive devices and methods for delivering a spinal connector to one or more spinal anchor sites in a patient's spinal column. In one embodiment, a spinal implant and access device is provided that includes a U-shaped receiver member, a bone-engaging member, and an extension member. The U-shaped receiver member can have a recess formed therein that is adapted to seat a spinal connector. The bone-engaging member can extend distally from the receiver member and it can be adapted to engage bone to thereby mate the receiver member to bone. The extension member can extend proximally from the receiver member and it can include a frangible portion formed thereon that is adapted to break when a predetermined force is applied thereto thereby allowing at least a portion of the extension member to be separated from the receiver member.

Abstract: The invention relates to a medical device for positioning bone elements, in particular vertebrae, relative to each other, comprising at least one assembly built up of two or more anchoring elements, which can each be implanted in a bone element with a first end thereof, as well as an elongated connecting element, which can be connected to the other ends of the anchoring elements projecting from the bone element in question. The object of the invention is to provide an improved medical device as referred to in the introduction, placement of which requires a simpler procedure and thus less drastic surgery, which is less burdening for the patient, therefore.

Abstract: An intervertebral stabilization system for at least three vertebrae comprising pedicle screws attachable to the vertebrae; at least one rod for the connection of at least two pedicle screws to form a rigid stiffening system; and at least one band which is capable of being pre-stressed in tension and which is surrounded in the implanted state of the stabilization system by at least one compressible pressure member arranged between two adjacent pedicle screws for the connection of the pedicle screws to form an elastic support system, wherein a common pedicle screw is associated both with the stiffening system and with the support system and the band is can be connected or is connected to the rod by means of a band attachment.

Abstract: An intervertebral stabilization system for at least three vertebrae comprising pedicle screws attachable to the vertebrae; at least one rod for the connection of at least two pedicle screws to form a rigid stiffening system; and at least one band which is capable of being pre-stressed in tension and which is surrounded in the implanted state of the stabilization system by at least one compressible pressure member arranged between two adjacent pedicle screws for the connection of the pedicle screws to form an elastic support system, wherein a common pedicle screw is associated both with the stiffening system and with the support system and the band is can be connected or is connected to the rod by means of a band attachment.

Abstract: A bone anchor (100) for attaching a rod (108) to a bone has an anchor member (106) for attachment to the bone and an anchor head (104) having a U-shaped opening for receiving the rod. The bone anchor also includes a locking cap (102) that has a main body (900) and a set screw (1000). Advantageously, in one embodiment the locking cap preferably is designed such that a single tool can be used to lock the locking cap in place on the anchor body preferably with a 90° turn and preferably then drive the set screw to clamp the rod. The locking cap also preferably non-threadingly engages the anchor body. The anchor body preferably has an inclined surface on its top surface which elastically deflects extending tabs on the main body to secure the locking cap to the anchor body. A method of implantation and assembly of the bone anchor are also described.

Abstract: A dynamic stabilization assembly includes a flexible inner cord, an outer spacer, and a pair of anti-torque and anti-shear sleeves located on either end of the spacer and rotationally fixed with respect to the spacer, each sleeve having at least one and up to a plurality of protrusions or radially directed ridges and grooves on an outer surface thereof. Bone screws cooperating with the sleeves include at least one aperture or a plurality of ridges and grooves for close cooperation and engagement with the ridges and grooves of the anti-torque/anti-shear sleeves.

Abstract: A locking mechanism for locking a rod in a screw and rod fixation assembly includes a cap having a sidewall and a locking element extending from at least a portion of the sidewall. Locking mechanism cooperates with a receiver component for a spinal fixation rod to lock the rod in the receiver without requiring application of torque. A method of locking a spinal fixation member in a receiver of a screw fixation assembly includes the steps of placing the spinal fixation member into a channel of a receiver, axially advancing a locking cap into the receiver toward the spinal fixation member without application of any torque, and securing the locking cap in a locked position above the spinal fixation member without application of any torque.

Abstract: A fastening system for bone screws used in spinal fixation systems for reshaping the spine of a patient. The bone screw has threads on one end for anchoring in the spine. The other end has a spherical head with a multi sided recess formed therein for engagement with an appropriate driving tool. The system includes a stabilizing rod, a saddle member, a cap member and a set screw with at least one bone screw having a outer diameter that exceeds the diameter of a cavity formed in the saddle, wherein placement of the bone screw is made possible by matching the threads of the set screw to the threads of the bone screw. The head of the bone screw providing proper positioning of the stabilization rod within the patient.

Abstract: A reversibly expandable vertebral fixation screw and minimally invasive techniques for inserting the screw are provided. The screw incorporates a divided tip and an expansion device that allows for the divided components of the tip of the screw to expanded outward to engage the internal surfaces of the vertebral body.

Abstract: One embodiment provides a bone fastener including a collar, a fastener member, and a pin. The collar can have an upper portion with slot to receive an elongated member and a lower portion with a socket and an opening. The fastener member can have head and shank portions. The socket can receive the head portion and prevent movement of the head portion through the opening when the head portion is out of registration with the opening. The head portion and the socket can be configured to allow angulation of the fastener member within a defined range of motion within a selected plane. The head portion and the socket can define apertures which can be aligned with each other when the head portion is in the socket and which can receive the pin. One embodiment provides a generally spherical head portion with a flat.

Abstract: A system is provided with a screwdriver and a bone screw (30), wherein the screwdriver has a tool (4), which is provided with at least two radially and axially extending tool blades (5, 6, 7, 8), which can be caused to engage groove-like blade slots (36, 38) of the bone screw (30) in a positive-locking manner. To improve the handling of a bone screw (30) even in case of the smallest possible dimensions, provisions are made according to the present invention for the tool blades (5, 6, 7, 8) to form at least one elastic clamping section (20, 21, 22, 23), with which the tool (4) can be caused to clampingly engage the bone screw (30) in the area of the blade slots (36, 38).

Abstract: A fixation device is used to fix an elongate element, in particular a wire, in an opening of a retaining structure, in particular of an implant plate. The fixation device has a main body. The main body is provided with a bore for receiving the elongate element. The main body is radially deformable in a clamp area, such that the diameter of the bore can be reduced. The main body has an outer contour which is designed in such a way that, when the fixation device is inserted into the opening of the retaining structure, the clamp area is deformed such that the elongate element is clamped securely in the bore.

Abstract: Devices and methods for spinal stabilization include first and second anchors engageable to respective ones of first and second vertebrae and a connector assembly engageable with the anchors to provide a desired stabilization effect. The connector assembly includes a pair of bumper assemblies extending between the bone anchors and a connecting element extending through the bumper assemblies and connecting the first and second bone anchors to one another.

Abstract: A system for implantation of a spinal stabilization system includes a vertebral anchor having a top portion. The top portion has a perimeter and a first engaging element. The first engaging element has a first longitudinal axis that is generally parallel to a second longitudinal axis of the top portion. The perimeter extends around the second longitudinal axis. The system also includes a driving tool that has a second engaging element that is configured to cooperate with the first engaging element to substantially restrict rotation of the driving tool relative to the top portion about the second longitudinal axis. The first engaging element is configured to slidably receive the second engaging element in a direction along the first longitudinal axis, and the second engaging element is configured to extend substantially within the perimeter of the top portion.

Abstract: The present invention includes an apparatus, kit and method for providing a bone fixation assembly for attachment to a bone to provide augmented support. The bone fixation assembly includes a screw having a screw head and a threaded shank. A first aperture is positioned about the screw head to receive a first longitudinal member and a first compression member that engages the first aperture to secure the first longitudinal member. The screw head has a second aperture positioned to receive a second longitudinal member and a second compression member that engages the second longitudinal member aperture to secure the second longitudinal member and provide augmented support.

Abstract: A spine screw assembly is adapted to be loaded from a bottom of a receiver member. The spine screw assembly includes a bone fastener with a head having a groove that removably accepts a clip. The clip acts to retain the head of the bone fastener in the receiver member.