Problem to be Solved

A traverse that is percutaneously provided and a surgical instrument for percutaneously providing the transverse are provided.

Solution

A rod 10 is placed in each of two rod openings 113, 123 and a transverse bar 130 is inserted in two bar holes 111, 121. Set screws 140, 150 are screwed in screw holes 114, 124. The set screws 140, 150 press the transverse bar 130, thereby restraining the transverse bar 130 in the longitudinal direction. Since portions of the bar holes 111, 121 adjoin the rod openings 113, 123, the pressed transverse bar 130 contacts the rods 10 and pushes the rods 10 against the rod openings 113, 123. A protrusion 127 engages with the rods 10 to restrain hooks 110, 120 in the longitudinal direction and circumferential direction of the rods 10.

Provided is a percutaneous screw fixing rod inserting device for minimal invasive surgery, which includes: a leg unit including a plurality of support legs, each of which has a joint link provided at a lower end thereof; an aligning holder unit configured to align the plurality of support legs such that longitudinal central axes of the support legs of the leg unit are placed on one virtual plane, the aligning holder unit holding the support legs such that an angle between the longitudinal central axes of the support legs is maintained; and a rod inserting unit coupled to the aligning holder unit to rotate by a predetermined angle around a portion coupled to the aligning holder unit and configured to insert the rod into a rod insert hole provided to the joint link of the support leg, thereby eliminating the difficulty of inserting the rod caused by the misalignment of the pedicle screws and increasing the convenience or efficiency of the medical procedure.

Provided is a spinal surgery apparatus for inserting a rod, which allows a rod forming an implant structure to be easily inserted and fixed, thus facilitating spinal surgery and minimizing invasions during the spinal surgery, thus helping a patient's recovery.

The spinal surgery apparatus for inserting a rod includes a handle gripped by a user, a fixing shaft connected to the handle, having on a lower end thereof a fixing part to which the rod is fixed, and separating the fixing part from the rod while the fixing shaft is tilted forwards, an actuating part including a connecting shaft inserted into the handle, and an actuating member installed on an end of the connecting shaft to move the connecting shaft up and down by rotation, and a rod push shaft inserted into the fixing shaft, and simultaneously coming at an upper end thereof into contact with a lower end of the connecting shaft, so that the rod push shaft is moved down by an operation of the actuating part, thus pushing and fixing the rod.

A device for use as a portal in percutaneous minimally invasive surgery performed within a patient's body cavity includes a first elongated hollow tube having a length adjusted with a self-contained mechanism. The first elongated tube includes an inner hollow tube and an outer hollow tube and the inner tube is adapted to slide within the outer tube thereby providing the self-contained length adjusting mechanism. Two or more elongated tubes with adjustable lengths can be placed into two or more adjacent body cavities, respectively. Paths are opened within the tissue areas between the two or more body cavities, and are used to transfer devices and tools between the adjacent body cavities. This system of two or more elongated tubes with adjustable lengths is particularly advantageous in percutaneous minimally invasive spinal surgeries, and provides the benefits of minimizing long incisions, recovery time and post-operative complications.

The present invention provides for a bone fixation device, an implantation instrument, and system which are useful in bone fixation surgeries. The bone fixation device of the instant invention allows the surgeon the ability to navigate the rod while being inserted into a pedicle screw assembly through a non-linear pathway by incrementally changing the direction of travel as desired.

Spinal stabilization implant assemblies, as well as systems, instruments and methods are provided for implanting and stabilizing adjacent vertebra in connection with a surgical procedure, particularly a spinal surgery. The implant assemblies and instruments enable controlled spinal rod insertion and reduction, and controlled rotation or de-rotation of adjacent spinal bones for optimized compression to achieve enhanced sagittal balance in a treated spine.

Provided is a percutaneous screw fixing rod inserting device for minimal invasive surgery, which includes: a leg unit including a plurality of support legs, each of which has a joint link provided at a lower end thereof; an aligning holder unit configured to align the plurality of support legs such that longitudinal central axes of the support legs of the leg unit are placed on one virtual plane, the aligning holder unit holding the support legs such that an angle between the longitudinal central axes of the support legs is maintained; and a rod inserting unit coupled to the aligning holder unit to rotate by a predetermined angle around a portion coupled to the aligning holder unit and configured to insert the rod into a rod insert hole provided to the joint link of the support leg, thereby eliminating the difficulty of inserting the rod caused by the misalignment of the pedicle screws and increasing the convenience or efficiency of the medical procedure.

A system and method for the minimally invasive insertion of an intervertebral rod into the vertebrae of a subject, according to a preoperative surgical plan also defining positions for the insertion of rod clamping screws into the vertebrae. The rod shape for connecting the heads of the screws is calculated, and a path planning algorithm used to determine whether the distal end of the rod can be threaded through the screw heads by longitudinal and rotational manipulation of the proximal end of the rod. If so, instructions are provided for forming that rod shape and for the robotic insertion of the screw holes and the rod. If not, either or both of the screw positions and the rod shape are adjusted, to moderate the bends in the rods, until insertion becomes possible. The insertion can be performed robotically, or, if a navigation tracking system is added, manually.

A compression assembly for positioning spinal vertebra to which are attached anchors on which is mounted a lockable primary rod movable relative to the anchors. The assembly comprises a compression tool capable of inducing a compressive force to said anchors to enable said positioning of said vertebra. The compression tool having first and second arms each having a distal working end which in use, a first of said arms engages the rod. Each said first and second distal working ends of the tool, each have a formation which co-operates with the rod; the formation on the second arm by co-operation with an anchorage associated with or on the primary rod enabling a concurrent rotation of the rod and translation of a vertebra to which the rod is connected via the vertebral anchors during compression applied to said anchors by the compression tool prior to locking of the rod by the vertebral anchors when vertebrae are in a selected position.

This application describes surgical instruments and implants for building a posterior fixation construct across one or more segments of the spinal column. Extension guides are provided that attach to bone anchors implanted within the spine. The extension guides have a guide channel that align with a rod channel in the anchor to help direct the rod to the anchor. Instruments are provided to aid in insertion and positioning or the rod.