5 results about "Spinal instrumentation" patented technology

The utility model discloses a minimally invasive long tail spine internal fixing system, which relates to the technical field of medical apparatus and instruments, and comprises a fixer main body, the top of the fixer main body is provided with a positioning component, the fixer main body comprises a fixing screw, the top of the fixing screw is provided with a mounting seat, the outside of the mounting seat is provided with an extension seat, and the extension seat is provided with a fixing component. A clamping groove is formed in the middle of the side wall of the extension seat, and a correcting rod is arranged in the middle of the clamping groove. According to the minimally invasive long-tail spine internal fixing system, positioning connection of the correcting rod is achieved through the arranged positioning assembly, the correcting rod is connected into the arc-shaped connecting base through the arranged threaded rod, the arranged positioning block is inserted into the threaded rod, and when the threaded rod descends, the positioning block is driven to be clamped to the outer portion of the correcting rod, so that the correcting rod is fixed to the position of the correcting rod. The arc-shaped clamping groove in the bottom of the positioning block is arranged outside the correcting rod in a sleeving mode, limiting connection of the correcting rod is achieved, the correcting rod is prevented from deviating in the using process, and the using stability of the device is improved.

The invention discloses a length-adjustable spinal internal fixing device, and particularly relates to the field of medical instruments. Comprising a connecting pipe; the two connecting pieces are connected to the two sides of the connecting pipe in a sliding mode respectively; the two positioning sleeves are respectively connected to the free ends of the corresponding connecting pieces in a sliding manner; the two flexible casing pipes are arranged in the corresponding positioning sleeves respectively, the inner diameter of the flexible casing pipes is the same as that of the openings in the positioning sleeves, and the flexible casing pipes are connected with the corresponding connecting pieces in a sliding and sealing mode; the two positioning rings are connected to the outer walls of the corresponding positioning sleeves in a sliding mode, and each positioning ring is provided with a limiting hole; the two bone nails are arranged in the limiting holes of the corresponding positioning rings in a penetrating manner; and the driving piece can drive the two connecting pieces to move towards the interior of the positioning sleeve. By the adoption of the technical scheme, the problem that the length of an existing spine internal fixing device cannot be adjusted is solved, and self-adaptive adjustment of the length can be achieved.

The utility model relates to medical instrument technical field, concretely relates to a transverse connecting device for internal fixation of spine, include: two cross links, the cross link includes the hook body and the stem that are connected with each other, fixed part is used for locking the stem of two cross links each other, when the fixed part is locked can force two stems to move towards each other, make two stem each other and produce locking force. The utility model discloses through setting up first limiting portion and second limiting portion on the stem of two cross links respectively, upgrade the stem of cross link originally smooth surface to the interlocking surface structure of carding, utilize the movement of each other when locking of fixed part, force first limiting portion active embedding nearest neighbor second limiting portion, on the basis of friction locking combination mechanical interlock, mechanical interlock structure still keeps certain locking force after the loosening of fixed part, significantly reduces the risk of postoperative failure.

A spine internal fixing device with a fusion function comprises a pedicle screw, the pedicle screw comprises a screw body, a screw tail is arranged at the upper end of the screw body, a nut is connected to the screw tail through internal threads, the screw body and the screw tail are of a honeycomb structure simulating cancellous bone, and solid external threads are arranged on the outer surface of the screw body. According to the spinal internal fixation device with the fusion function, a full-assembly simulation cancellous bone honeycomb structure of a pedicle screw rod nut and a matched connecting piece is prepared by adopting a 3D printing technology, and meanwhile, solid structures of key stress parts such as an external thread tip threaded connection surface are reserved so as to guarantee early mechanical fixation strength; after the components are assembled, a continuous bone ingrowth channel is formed, so that the transformation of internal fixation of the spine from temporary mechanical support to permanent osseous fusion is realized, and various intervertebral, intervertebral, posterior lateral and transverse process bone grafting fusion steps in a traditional spine fusion operation can be omitted.

According to the radial pressure sensing pedicle screw for internal fixation of the spine, a sensitive film pressure sensing structure and the internal space of the pedicle screw are integrated, and the radial pressure of the side wall of the screw can be monitored in real time on the premise that the mechanical property of the screw is not remarkably weakened. The structure has the advantages of being compact in structure, clear in force transmission path, sensitive in response, good in repeatability, suitable for miniaturized integration and the like, a new technical path can be provided for intelligent sensing of intelligent pedicle screws and orthopedic internal fixation instruments, and good clinical application prospects are achieved.