40 results about "Spinal instrumentation" patented technology

Methods and apparatus for and performing a partial or complete discectomy of an intervertebral spinal disc accessed by one or more trans-sacral axial spinal instrumentation / fusion (TASIF) axial bore formed through vertebral bodies in general alignment with a visualized, trans-sacral anterior or posterior axial instrumentation / fusion line (AAIFL or PAIFL) line. A discectomy instrument is introduced through the axial bore, the axial disc opening, and into the nucleus to locate a discectomy instrument cutting head at the distal end of the discectomy instrument shaft within the nucleus. The cutting head is operated by operating means coupled to the instrument body proximal end for extending the cutting head laterally away from the disc opening within the nucleus of the intervertebral spinal disc and for operating the cutting head to form a disc cavity within the annulus extending laterally and away from the disc opening or a disc space wherein the disc cavity extends through at least a portion of the annulus. A discectomy sheath that is first introduced to extend from the skin incision through the axial bore and into the axial disc opening having a discectomy sheath lumen that the discectomy instrument is introduced through. The discectomy sheath is preferably employed for irrigation and aspiration of the disc cavity or just aspiration if irrigation fluids are introduced through a discectomy instrument shaft lumen. The cutting head of the discectomy tool is deflected from the sheath lumen laterally and radially toward the annulus using a deflecting catheter or pull wire.

A closed-head polyaxial screw for use in spinal instrumentation for spinal fusion, treatment of deformity, or the like. Polyaxial screws may have a two-part design, with the screw fitting into an aperture in the closed head. One or more clamps may secure the bone screw in the aperture. A closed-head polyaxial screw having a one part design is also disclosed. In addition, a one-part monaxial screw is described.

A rod holder for inserting a rod for spinal instrumentation into a patient. The rod may be inserted through the same incision used for fixing pedicle screws, so that an additional incision may not be required. The rod holder may include a body, a slide that slidably mates to a side of the body, and a ram that actuates the slide.

The present disclosure provides an adjustable double-slot internal spinal fixation apparatus, including a first base, a second base and a connecting rod. The first base and the second base each contains a U-shaped slot from top to bottom. An inner wall of each U-shaped slot contains inner threads. The connecting rod is disposed along a horizontal direction. The second base contains a long slot along the horizontal direction. One end of the connecting rod is inserted in the first base, and the other end of the connecting rod is inserted in the long slot of the second base. The connecting rod can swing in the long slot. The first base and the second base are capable of relatively rotating on the connecting rod.

The invention provides a spine connector and a spine internal fixator with the spine connector. The spine connector comprises a first connecting body, the first connecting body comprises a first connecting rod and a first transverse connecting column, and the first connecting rod and the first transverse connecting column are of an integrally-formed structure; a second connecting body, the secondconnecting body comprises a second connecting rod and a second transverse connecting column, and the second connecting rod and the second transverse connecting column are of an integrally-formed structure; and a connecting piece, the connecting piece is connected between the first transverse connecting column and the second transverse connecting column, the first transverse connecting column and / or the second transverse connecting column are / is rotatably arranged relative to the connecting piece, and the second transverse connecting column is telescopically arranged relative to the connectingpiece. By means of the technical scheme, the problems that in the prior art, a spine internal fixator is complex in structure and poor in stability can be effectively solved.

The invention discloses a fixing device in spines. The fixing device includes a device body, screws and anti-dropping structures; the device body is provided with screw holes and long holes; the screwholes penetrate the top surface and bottom surface of the device body; the long holes have top surfaces and bottom surfaces, and the top surfaces and bottom surfaces of the long holes are located between the top surface and bottom surface of the device body; the screws are arranged in the screw holes and can fix the device body on a spine; the anti-dropping structures are rotatably arranged on the device body and have pressing parts and limit parts; the limit parts are movably clamped between the top surfaces and bottom surfaces of the long holes; when the limit parts are located at first positions, the pressing parts can be pressed on the screws so as to make the screws locked in the screw holes; and when the limit parts are located at second positions, the screws are in unlocking states, and the limit parts can be clamped in the long holes, so that the anti-dropping structures can be axially limited. Therefore, the loosening of the anti-dropping structures can be prevented.

The invention belongs to the field of spinal internal fixation medical devices, and in particular relates to a minimally invasive operation method for spinal internal fixation. A minimally invasive surgical method for internal fixation of the spine, including positioning and marking, puncturing and inserting guide wires, expanding the wound step by step, establishing screw paths, inserting pedicle screw-extended arm components, determining the length of the orthopedic rod, and plasticizing Orthopedic rods, installation of orthopedic rods, adjustment and locking of the fixed points of the orthopedic rods, dismantling of the extension arm and suturing the wound.