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.

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.

The improvement is a spinal instrument (preferably, a bone screw driver) having a flexible shaft comprising a plurality of interlocking segments carried on a malleable core rod. The flexible shaft allows a screwdriver handle to be perfectly in-line with the cage inserter if desired, while still taking advantage of the tactile feel and torque transmission of the flex segment in its bent position. Accordingly, a surgeon can limit the amount of retraction and keep the driver handle close to the inserter without having to overcome the forces of the flexible segments' natural straight configuration.

A spinal instrumentation system includes an oblong tension ring having a tension screw receptacle, a pair of compression balls having passages therethrough disposed within the tension ring, and a tension screw. Threading the tension screw into the tension screw receptacle inhibits movement of the compression balls relative to the tension ring and each other, thereby making the system rigid. Fixation screws are inserted through the passages in the compression balls and anchored in bone. One of the fixation screws may be a screw designed to traverse the lamina and including a scalloped segment. A pair of such systems may be posteriorly attached to the vertebrae, one on either side of the spinous process, to fuse the superior segment in a lumbar fusion procedure. The spinal fixation screws traverse the lamina, crossing at their scalloped segments.

An electrode for use in monitoring MEPs during spinal instrumentation. A thin, flexible strip of insulative material is provided with conductive tracks on both top and bottom surfaces, the top and bottom conductive tracks connecting through respective plated-through holes. The bottom side tracks extend at an oblique angle relative to the top side tracks and are spaced apart so as to provide intimate contact with the surface of the dura against which the electrode is placed during surgical procedures. The top side tracks terminate in a solder pad to which leads for the instrumentation for measuring / detecting MEPs are connected.

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.

Spinal instrumentation and methods are adapted for use with implanted pedicle screws having exposed heads with opposing surfaces between a bony surface and a rod-capturing through bore. The instrumentation includes a spreader having a proximal end and a distal end, the proximal end including a pair of handles and the distal end including a single pair prongs. The prongs of the spreader have tapered ends with opposing surfaces adapted to engage with the opposing surfaces of the exposed heads of the pedicle screws and spread them apart when pressure is applied to the handles. A method of spreading implanted pedicle screws having exposed heads, comprises the steps of inserting the prongs of the spreader between the opposing surfaces of the exposed pedicle screw heads, and spreading the exposed heads through the application of pressure to the handles of the spreader. The method may further including the step of applying a distractor over the prongs of the spreader when the exposed pedicle screw heads are moved apart.

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.

The invention relates to an auxiliary spine internal fixation device capable of reinforcing the intensity of an internal fixation system in the operation of the spine internal fixation, and a use method of the auxiliary spine internal fixation device. The auxiliary spine internal fixation device is composed of an auxiliary rod, a plurality of connectors and a plurality of fastening screws, wherein the auxiliary rod and the connectors can be directly fixedly connected, or can be connected through auxiliary rod grooves designed on the connectors, the other sides of the connectors are provided with main rod grooves used for connection with a main rod, in design, one independent main rod groove can be adopted for connecting the main rod between two fastening screws, two main rod grooves spaced at a certain distance also can be adopted, Y-shaped design is adopted, and the main rod grooves adopting the design can be used for connection with the main rod on the two sides of the fastening screws. The auxiliary spine internal fixation device is made of titanium alloy, magnesium alloy or a stainless steel material having good biocompatibility. With the adoption of the device, the intensity of the internal fixation system can be greatly improved, and thus the occurrence of complications such as rod breakage and angle loss can be reduced.

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 invention belongs to the field of spine fixing systems, and discloses a horizontal connecting device and a spine inner fixing system using the same. The horizontal connecting device disclosed by the embodiment of the invention comprises a connecting rod, two clamping blocks and a locking device, wherein the connecting rod comprises a first connecting rod and a second connecting rod; the end ofthe first connecting rod is in spherical hinging with the end of the second connecting rod; the two clamping blocks are separately inserted to the first connecting rod and the second connecting rod;and the locking device is arranged to be used for pressing the spherical hinging point of the first connecting rod and the second connecting rod to realize relative positioning of the first connectingrod and the second connecting rod. The horizontal connecting device disclosed by the invention can perform multi-dimension adjustment, so that the stability after connection is improved.

A connecting kit of a subcutaneous elastic spine internal fixation system comprises a prying block, a longitudinal rod locking screw and a vertebral pedicle locking screw, wherein a vertebral pedicle screw hole in the prying block is a stair hole of which the size decreases gradually from top to bottom; the hole passes through upper and lower end faces of the prying block; a vertebral pedicle locking screw hole penetrates into the vertebral pedicle screw hole from the rear wall face of the prying block; a longitudinal rod hole penetrates into the front end face of the prying block from the rear wall face of the prying block; a longitudinal rod locking screw hole penetrates into the longitudinal rod hole from the upper end face of the prying block; the longitudinal rod locking screw is installed in the longitudinal rod locking screw hole; and the vertebral pedicle locking screw is installed in the vertebral pedicle locking screw hole. According to the invention, elastic fixation of thoracolumbar vertebra posterior paths can be achieved based on principles of prying resetting. The prying block has a compact and small structure and can be placed under skin of a patient; in comparison with a thoracolumbar spine external fixator placed outside skin, post-operation nursing is simpler, effects on the patient's daily life are reduced, and the occurrence rate of local skin soft tissue infection is reduced.

The invention discloses a disinfection and cleaning device for a spinal internal fixation screw used for orthopedics department. The disinfection and cleaning device comprises a disinfection box, an ultraviolet sterilization lamp set, a cleaning tank, a horizontal conveying device, a screw frame suction device and a vertical conveying device, wherein the inner bottom part of the cleaning tank is provided with a cleaning solution pool; the bottom part of the cleaning solution pool is connected with an ultrasonic generator through an ultrasonic transducer; the horizontal conveying device is fixedly connected with the inner top part of the cleaning tank; the screw frame suction device is arranged below the horizontal conveying device; the left side of the screw frame suction device is provided with a screw frame; the left side face and the right side face of the screw frame are each provided with a magnet b; liquid leakage holes are formed in the bottom part of the screw frame; and the vertical conveying device is fixed to the inner top part of the disinfection box. With the mutual cooperation of the horizontal conveying device, the screw frame suction device and the vertical conveying device and the mutual cooperation of the ultrasonic generator and the ultrasonic transducer, a screw is automatically and efficiently cleaned; operation is convenient; and the screw is disinfected through the ultraviolet sterilization lamp set, so that the screw disinfection effect is improved.

The invention relates to the field of medical instruments, and discloses a medical orthopaedic clinical elastic spine internal fixation device. The device aims for solving the problems that in the prior art, an orthopaedic clinical elastic spine internal fixation device is troublesome in fixation and affects the movement of an injured part of a patient. The device comprises two nuts, two connectors, a first fixing column and a second fixing column, the nuts are in threaded connection with the connectors, connecting shafts are fixed to the inner walls of the tops of the nuts, pressing plates are rotatably connected to the other ends of the connecting shafts, connecting grooves are formed in the tops of the connectors, notches are formed in one sides of the connecting grooves, sliding grooves are formed in the inner walls of the sides, opposite to the notches, of the connecting grooves, and fixing screws are fixed to the bottoms of the connectors. The medical orthopedic clinical elasticspine internal fixation device is reasonable in structure, ingenious in design and easy to operate, and the device solves the problems that the orthopedic clinical elastic spine internal fixation device in the prior art is troublesome in fixation and affects movement of the injured part of the patient, facilitates better rehabilitation of the patient and is easy to popularize and use.

A split type dynamic and static dual-purpospedicle screw capable of being fused or fixed in a non-fused mode and assembled in an operation is used for a spinal internal fixation operation, and is composed of a screw base (1), a connecting claw (4), a ball screw (10), an auxiliary connecting rod (13) and a locking screw (14) which are assembled in the operation. The screw base (1) is provided witha circular hollow cavity, an open through groove (2) for restraining the connecting rod (13) is formed in the top end or the side wall of the screw base (1), and the lower end of the screw base (1) isan umbrella-shaped opening (3); the upper half portion of the connecting claw (4) is a hollow cylindrical body (5) connected with the screw base (1), the lower half portion of the connecting claw (4)is an umbrella-shaped body (6), an annular deformation groove (9) is formed in the outer surface of the joint, the umbrella-shaped body (6) is evenly divided into a plurality of petals (8) capable ofbeing opened outwards, and a spherical cavity (7) is formed inside. During an operation, the ball screw (10) is implanted into the pedicle of the vertebral arch, then the inner cavity of the umbrella-shaped body (6) at the lower end of the connecting claw (4) wraps the ball head part (11), the screw base (1) is sleeved in the connecting claw (4) and is connected with the connecting claw (4) through a threaded structure, and finally the connecting rod (13) is inserted into the open through groove (2) and locks threaded connection. The incisura of the pedicle screw is extremely low, so that discomfort such as pain and the like caused by muscle stimulation of a highly convex implant can be greatly reduced.

The invention belongs to the field of medical instruments for spinal internal fixation, and particularly relates to a minimally invasive surgery method for spinal internal fixation. The minimally invasive surgery method for spinal internal fixation comprises the steps of positioning and marking, puncturing and implanting a guide wire, expanding a wound step by step, establishing a nail channel, implanting a pedicle screw-extension arm assembly, determining the length of an orthopedic rod, shaping the orthopedic rod, installing the orthopedic rod, adjusting and locking a fixing point of the orthopedic rod, detaching an extension arm, suturing the wound and the like.

The invention relates to the technical field of medical instruments, in particular to a combined type clamping mechanism for internal fixation of the spine, which comprises a plurality of fixing rods, and a connecting block is arranged between the opposite ends of two adjacent fixing rods. The included angle between the two fixing rods is easily changed through rotation of the movable balls in the movable grooves, then the fixing rods can effectively fix and clamp spines with different bending radians, then the movable balls in the movable grooves are positioned through the first positioning blocks, the included angle between the two fixing rods is fixed, and the spine fixing device is convenient to use. The fixing rods fixed through the included angle are matched with the supporting columns to fix and clamp the spine of a patient, the assembling number of the fixing rods can be selected according to the spine of the patient in different postures, the fixing and clamping device for the spine can be flexibly assembled, and the application limitation of an existing fixing and clamping device in the spine is effectively reduced.

The invention relates to a spinal internal fixation extension rod. The rod is characterized in that: both ends of a first connecting rod are respectively provided with a hexagonal prism of the first connecting rod, the hexagonal prism of the first connecting rod is provided with a locking screw hole of the first connecting rod, the connecting end of a second connecting rod is provided with a hexagonal prism-shaped groove of the second connecting rod, the connecting end is provided with a locking screw hole of the connecting end of the second connecting rod, the locking screw hole of the connecting end of the second connecting rod penetrates the connecting rod, the tail end of the second connecting rod is provided with a hexagonal prism of the second connecting rod, and the hexagonal prismof the second connecting rod is provided with a locking screw hole of the tail end of the second connecting rod. The hexagonal prism of the first connecting rod is inserted into the hexagonal prism-shaped groove of the second connecting rod, and a locking screw is inserted into the locking screw hole of the connecting end of the second connecting rod for detachable and fixed connection, so that the first connecting rod and the second connecting rod are in detachable and fixed connection. According to the present invention, the rod has a simple structure, and is directly extended base on the original connecting rod, which facilitates carrying out reoperation, too much wound exposure is not need, and surgical trauma is reduced.

Systems and methods for producing osteogenic effect in spinal fixation systems using selectively anodized components are described. Anodization patterns can be selected to produce a desired electric field and osteogenic effect in tissues and structures surrounding the selectively anodized component.

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 discloses a pedicle screw medical anchoring agent. The pedicle screw medical anchoring agent is prepared from additives, fillers and water by mixing according to a weight percentage, wherein the pedicle screw medical anchoring agent comprises: by weight, 50 to 75% of the additives, 10 to 20% of the fillers and the balance water. The pedicle screw medical anchoring agent can condense fast, has slight expansion, can reinforce a pedicle screw trajectory, has obvious fixing effects and good biological performances, can obviously improve a reinforcement degree of a pedicle screw trajectory local under the condition of osteoporosis, can improve stability and reliability of an inner spinal instrumentation, and can effectively improve clinic effects.

The invention discloses an augmented reality assisted spine internal fixation screw implantation method and system, and relates to the technical field of spine pedicle screw implantation, the method comprises the following steps: creating a virtual spine three-dimensional model according to patient lesion image data; making an operation plan according to the virtual spine three-dimensional model, and obtaining a virtual spine three-dimensional model with the operation plan; importing the virtual spine three-dimensional model with the operation plan into VR equipment to obtain a retina projection 3D model with the operation plan; a doctor wearing AR equipment, performing matching calibration on the retina projection 3D model with the operation plan and the real spine model, performing locking after calibration is completed, obtaining the calibrated projection 3D model with the operation plan, and completing an operation on the real spine model according to the operation plan shown by the projection 3D model; and evalulating the accuracy of nail planting. The nail implanting accuracy is remarkably improved, and the risk of navigation drifting in an operation is greatly reduced.

The invention relates to a spinal internal fixing device. The spinal internal fixing device comprises a device main body and a plurality of nail bodies in threaded connection with the device main body, the device body comprises a fixing plate body, a first sliding groove, a guiding plate body, a second sliding groove, a positioning plate body and a screw hole. The screw body comprises a connecting part used for being connected with a device body and a combining part used for being connected with a vertebral body. The internal fixation device for the spine can be attached to the spine, in the nailing process, the position of the guide plate body is moved to prevent the insertion point of the nail body from being lost, meanwhile, the requirement for internal fixation of the spine is met, and the risk of an operation is reduced.

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.