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.

Replaces anterior spinal column with an expandable lattice implant made of supportive material that includes use of fusion augmenting material. Allows ease of use while promoting both immediate spinal stability and eventual arthrodesis. May be utilized during anterior or retroperitoneal approaches to the spinal column, primarily addressing anterior spinal column pathology. May utilize fusion augmenting material of limited biomechanical strength compared to the strength of its rigid components. May be accompanied by additional anterior or posterior spinal instrumentation and fixation. Uses a pair of circular endplate discs that are distracted from each other by ribs of rigid support rods. Extension may be performed using an expansion tool once device is placed within intervertebral space. Hollow portions of device may be packed with bone or other materials to enhance eventual fusion. Shape of discs at each end may be manipulated prior to surgery to adapt to the specific spinal curvature desired.

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 invention discloses a minimally invasive spine internal fixation system, which comprises a minimally invasive channel establishing and expanding assembly, a drilling assembly, a plurality of screw assemblies, a screw assembly mounting mechanism, a plurality of pull rods, a pull rod inserting assembly and a plurality of fastening nails, wherein by virtue of the minimally invasive channel establishing and expanding assembly, a minimally invasive channel is established on the back of a patient and is expanded to set sizes; the drilling assembly enters the minimally invasive channel, and by virtue of the drilling assembly, a threaded hole is drilled in a preset vertebra position; each of the screw assemblies comprises a screw and a connecting block; the upper sides of the screws are rotatably connected to the connecting blocks; a first through hole is each formed in the connecting blocks; screw threads are arranged on the inner sidewalls of the first through holes; second through holes are formed in the sidewalls of the connecting blocks; by virtue of the screw assembly mounting mechanism, the screws are screwed into the threaded hole; each of the pull rods can be simultaneously inserted into the second through holes of the plurality of connecting blocks; by virtue of the pull rod inserting assembly, a pull rod is inserted in the second through holes of the plurality of screw assemblies fixed to vertebra; and the plurality of fastening nails are arranged in the first through holes for pressing the pull rod. With the application of the minimally invasive spine internal fixation system provided by the invention, vertebra fixation can be completed with a relatively small incision.

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.

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 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 provides a combined type porous interbody fusion cage and a machining method, and belongs to the technical field of spine internal fixation medical treatment, the combined type porous interbody fusion cage comprises a clamping part, an adjustable part and a limiting mechanism, the clamping part and the adjustable part are each composed of a solid shell and a porous structure, and the clamping part is provided with an instrument clamping column; the clamping part is hinged to the adjustable part, and the rotation angle is limited and fixed through a limiting mechanism; and the invention discloses a processing method of a combined porous interbody fusion cage. The combined porous interbody fusion cage is integrally formed through 3D printing. According to the combined type porous interbody fusion cage and the machining method, the combined type porous interbody fusion cage can be implanted between vertebral bodies of different physiological structures by adjusting the angle, is suitable for TLIF surgical approach, and meanwhile guarantees the structural strength and the bone ingrowth condition, so that the problems that a traditional interbody fusion cage is unitary in matching with the vertebral bodies, and the bone ingrowth and strength are not good enough due to the structure are solved.

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.