8 results about "Vertebral fixation" patented technology

The present application relates to a kind of implantable fixation device and method for mouse spinal cord administration, the device includes: catheter assembly, which includes sleeve, injection inner tube and locking nut, the catheter assembly is used to carry out fixed-point infusion in spinal cord parenchyma by the bone hole opened on vertebral vertebra;Vertebra fixation assembly, which includes two V-shaped supports for clamping and fixing on the two sides of the outer periphery of vertebra;And bonding reinforcement system, which includes the initial solid seal layer formed by adhesive to realize the sealing between bone hole and catheter assembly and the structural holding adhesive resin layer formed by resin to realize the fixation between vertebra fixation subassembly and vertebra.The present application designs special vertebra fixation assembly: V-shaped support, and is combined with "biological glue preliminary adhesion" and "dental cement overall wrapping", and constructs a multi-level, rigid-flexible combined "sandwich fixation" composite fixation system.

The present invention relates to a prosthesis for implantation into an intervertebral space of a cervical vertebra, and specifically discloses an intervertebral fusion device, comprising: a fusion cage body having two end faces and a bone grafting window penetrating through the two end faces, the fusion cage body being implanted into the intervertebral space in such a manner that the two end faces thereof face end plates of two vertebrae, respectively; the bone plate is provided with through holes located in the upper portion and the lower portion respectively, the bone plate is arranged on the front side of the cervical vertebra and crosses two vertebrae defining an intervertebral gap, and the through hole in the upper portion and the through hole in the lower portion are opposite to the two vertebrae respectively; the bone screws penetrate through the through holes in the upper part and the lower part of the bone plate and are screwed into the vertebrae, so that the bone plate is respectively fixed with the two vertebrae; the linear component is provided with a near end and a far end, the near end of the linear component is attached to the middle of the bone plate, and the far end of the linear component extends into the intervertebral gap to be attached to the front side of the fusion cage body to limit displacement of the fusion cage body and maintain the fusion cage body in the middle area of the intervertebral gap.

The application discloses a vertebral fixation device, which comprises a plurality of pedicle screws and a connecting rod connected with the pedicle screws. The connecting rod comprises a heating rod, a plurality of memory plastic wires capable of being deformed by heat and a plurality of support tubes arranged in sequence. Each memory plastic wire is spirally wound on the heating rod to form a core rod in cooperation with each other, the support tubes are sleeved outside the core rod, and the memory plastic wires are connected with the support tubes. The vertebral fixation device further comprises an electric heating mechanism for heating the heating rod, the temperature of the memory plastic wires changes, and the memory plastic wires are transformed between a first state and a second state. In the first state, the support tubes abut against each other. In the process of transforming to the second state, the distance between the support tubes gradually increases. The vertebral fixation device of the application solves the defect that the rigidity of a traditional connecting rod is not adjustable by optimizing the connecting rod from a solid alloy rod to a combination of the heating rod, the memory plastic wires and the support tubes.

This invention relates to a prosthesis for implantation into the intervertebral space of the cervical spine. Specifically, this invention discloses an intervertebral fusion device, comprising: a fusion body having two end faces and a bone graft window penetrating the two end faces, the fusion body being implanted into the intervertebral space with its two end faces facing the endplates of the two vertebrae respectively; a bone plate having through holes located at the upper and lower parts respectively, the bone plate being arranged on the anterior side of the cervical spine and spanning the two vertebrae defining the intervertebral space, the upper and lower through holes being opposite to the two vertebrae respectively; bone screws, which are screwed into the vertebrae through the upper and lower through holes of the bone plate to fix the bone plate to the two vertebrae respectively; and a linear component having a proximal end and a distal end, the proximal end of the linear component being attached to the middle part of the bone plate, and the distal end of the linear component extending into the intervertebral space and attached to the anterior side of the fusion body to limit the displacement of the fusion body and maintain the fusion body in the middle region of the intervertebral space.

A system for rod bending for use in robotic spinal surgery, enabling the correct bending of a fusion rod to match the shape required to accurately pass through the heads of the pedicle screws. The system uses data generated by information provided to the robot by the surgeon's preoperative plan, optionally augmented by feedback from the robot control system of deviations encountered intraoperatively. Such deviations could occur, for example, when the surgeon decides intraoperatively on a different trajectory or even to skip screws on one vertebra, in which case, the robot will be commanded to perform the alternative procedure, with commensurate instructions relayed to the control system of the rod-bending machine. The system is also able to thin down the rod at predetermined locations along its length, adapted to be at selected intervertebral locations, for maintaining limited flexibility between vertebrae, instead of fixating them.

The utility model discloses an adjustable spine fixing device which comprises a fixing plate, a spine plate is arranged on one side of the fixing plate, adjusting rods are symmetrically connected in the fixing plate in a sliding mode, locking mechanisms matched with the adjusting rods for use are arranged in the fixing plate, and a cervical plate is arranged on one sides of the adjusting rods. The top of the adjusting rod and the bottom of the fixed plate are fixedly connected with a mounting frame; the utility model relates to the technical field of spine fixing devices, the adjustable spine fixing device achieves the function of adjusting the distance between the spine plate and the cervical vertebra plate through the arrangement of the fixing plate, the locking mechanism, the adjusting rod and the fixing groove, cervical vertebras and spines of different patients can be conveniently fixed, and the applicability is better; by arranging the mounting frame, the lead screw, the fixed rod, the sliding plate, the inserting block, the mounting block and the inserting groove, the function of quickly disassembling and assembling the spine plate and the cervical plate is achieved, the spine plate and the cervical plate are conveniently disassembled and cleaned, and it is prevented that sweat stains and the like are attached to affect use.

The present application relates to the technical field of medical devices, and discloses an intervertebral fusion cage and a vertebral fixation system, which comprises a first support body, a second support body, a connecting piece, an adjusting screw, a sliding block and a locking piece, wherein the connecting piece is arranged on the first support body and is hinged to the second support body; the adjusting screw is rotationally connected to the connecting piece; the sliding block is threadedly connected to the adjusting screw, is slidingly connected to the first support body and abuts against the second support body; and the locking piece is arranged at the end of the adjusting screw and is used for embedding the gap between the connecting piece and the adjusting screw to fix the connecting piece and the adjusting screw in relative circumferential direction. The connecting piece and the adjusting screw are fixed in relative circumferential direction by embedding, so that the positioning of the adjusting screw can be realized and loosening can be avoided; and when the adjusting screw is driven to rotate by a surgical instrument, the locking piece is not installed, so that the stress detection of the surgical instrument is not interfered, and the surgical precision can be ensured.

The utility model discloses an adjustable spine centrum fixing frame which comprises a lower fixing block and an upper fixing block, and a plurality of spine adjusting plates are arranged between the upper fixing block and the lower fixing block. According to the adjustable fixing frame for the spine centrum, the lower fixing block, the upper fixing block, the spine adjusting plate, the upper connecting plate and the lower connecting plate are matched with one another, the upper connecting plate and the lower connecting plate are inserted into the upper fixing block and the lower fixing block and are locked through the plug pins, the lacing belt is tightly tied to the body of a patient, and therefore the spine centrum can be adjusted. After the adjustment of the angles between different spine plates is completed, the adjusting screw is tightened, so that the extrusion spring is in a maximum extrusion state, the limiting gear sleeve is locked on the surface of the limiting gear ring, and the angles of the spine plates are prevented from being changed again; and medical staff can conveniently and visually observe the bending condition of the spine centrum of a patient, and follow-up rehabilitation training can be more accurately adjusted.