42 results about "Transpedicular fixation" patented technology

The present invention relates to a system and methods generally aimed at monitoring the trajectory of surgical instruments and especially for monitoring the trajectory of surgical instrument used during pedicle fixation to ensure the proper placement of pedicle screws.

Systems and methods for determining a desired trajectory and/or monitoring the trajectory of surgical instruments and/or implants in any number of surgical procedures, such as (but not limited to) spinal surgery, including (but not limited to) ensuring proper placement of pedicle screws during pedicle fixation procedures and ensuring proper trajectory during the establishment of an operative corridor to a spinal target site.

An adaptable spinal facet joint prosthesis, including a pedicle fixation element; a laminar fixation element; and a facet joint bearing surface having a location adaptable with respect at least one of the pedicle fixation element and the laminar fixation element. The invention also includes a method of implanting an adaptable spinal facet joint prosthesis including the steps of determining a desired position for a facet joint bearing surface; and attaching a prosthesis comprising a facet joint bearing surface to a pedicle portion of a vertebra and a lamina portion of a vertebra to place the facet joint bearing surface in the desired position. The invention also provides a facet joint prosthesis implant tool including a tool guide adapted to guide a vertebra cutting tool; and first and second fixation hole alignment elements extending from the saw guide.

A method and associated system of implanting a vertebral anchor such as a pedicle screw assembly includes the steps of implanting a number of pedicle screws into a series of vertebrae; attaching a number of provisional posts to respective pedicle screws, each provisional post including a provisional saddle; bending a rod to conform to a desired alignment of the provisional saddles; removing the provisional posts from the pedicle screw heads; and connecting the bent rod to the pedicle screw heads. Advantageously, the method allows external fitting and sizing of a fixation rod before it is implanted and secured to the vertebral anchors via a minimally invasive manner.

Provided is a novel system that includes an anterior vertebral body plate with at least one bone spike pivotally attached to the plate and capable of being manually inserted into underlying bone to securely fix the plate to the bone. Also provided is a method of stabilizing cervical vertebrae using the disclosed system.

The invention discloses devices, methods and systems for implanting articulating devices on the human spine. In some embodiments, three or more vertebrae are movable interconnected with artificial joints. Some embodiments are particularly well suited for implanting in the lumbosacral area of the spine. Some embodiments employ hybrid systems combining translaminar fixation with pedicular fixation of the device components. Some embodiments combine facet joint replacement with disc replacement.

An adaptable spinal facet joint prosthesis, including a pedicle fixation element; a laminar fixation element; and a facet joint bearing surface having a location adaptable with respect at least one of the pedicle fixation element and the laminar fixation element. The invention also includes a method of implanting an adaptable spinal facet joint prosthesis including the steps of determining a desired position for a facet joint bearing surface; and attaching a prosthesis comprising a facet joint bearing surface to a pedicle portion of a vertebra and a lamina portion of a vertebra to place the facet joint bearing surface in the desired position. The invention also provides a facet joint prosthesis implant tool including a tool guide adapted to guide a vertebra cutting tool; and first and second fixation hole alignment elements extending from the saw guide. The invention also provides systems for treating spinal pathologies that include intervertebral discs in combination with spinal and facet joint prostheses.

An adaptable spinal facet joint prosthesis, including a pedicle fixation element; a laminar fixation element; and a facet joint bearing surface having a location adaptable with respect at least one of the pedicle fixation element and the laminar fixation element. The invention also includes a method of implanting an adaptable spinal facet joint prosthesis including the steps of determining a desired position for a facet joint bearing surface; and attaching a prosthesis comprising a facet joint bearing surface to a pedicle portion of a vertebra and a lamina portion of a vertebra to place the facet joint bearing surface in the desired position. The invention also provides a facet joint prosthesis implant tool including a tool guide adapted to guide a vertebra cutting tool; and first and second fixation hole alignment elements extending from the saw guide. The invention also provides systems for treating spinal pathologies that include intervertebral discs in combination with spinal and facet joint prostheses.

The invention relates to a novel cervical vertebra dynamic internal fixing device, which comprises an artificial cervical vertebra body and an artificial intervertebral disc. The artificial cervical vertebra body is inlaid on any vertebral body of the third section to the seventh section of partially cut human cervical vertebra. Two screw holes and two clamping grooves are symmetrically arranged on the artificial cervical vertebra body. A vertebral pedicle screw which is fixedly connected with the section of the human cervical vertebra body and a vertebral pedicle is arranged in each screw hole in a penetrating way. A vertebral pedicle screw lock pin cross bar is positioned and clamped between the two clamping grooves. The artificial intervertebral disc is arranged at the upper end and the lower end of the artificial cervical vertebra body, is arranged at a vertebral gap between an upper vertebral body and a lower vertebral body close to the position of the artificial cervical vertebra body, and comprises artificial nucleus pulposus and an artificial end plate. A screw hole is arranged on the artificial end plate. An artificial end plate fixing screw which is fixedly connected with the corresponding section of the artificial cervical vertebra body is arranged in the screw hole in a penetrating way. By adopting the internal fixing device, the invention has the advantages that the surgical invasion is small, the operation is easy and the dynamic fixation of the cervical vertebra after the subtotal excision of an anterior cervical single vertebral body can be realized.

The invention discloses a minimally invasive spinal operation channel device for vertebral pedicle fixation. The device comprises a first spinal operation channel device, a second spinal operation channel device and a linkage device. The two ends of the linkage device are linked to the first spinal operation channel device and the second spinal operation channel device respectively to form mutualconstraint fixation relationship of the first spinal operation channel device and the second spinal operation channel device, the first spinal operation channel device and the second spinal operationchannel device each include a guiding needle, an expansion sleeve and an outer sleeve, and the linkage device comprises a lock ring sleeve and a connecting locking device fixed to the first spinal operation channel device and the second spinal operation channel device. The linkage device of the device is more compactly connected with the first spinal operation channel device and the second spinaloperation channel device, the mutual constraint relationship formed between the first spinal operation channel device and the second spinal operation channel device is ensured, the relative position relationship between the first spinal operation channel device and the second spinal operation channel device is ensured, the linkage device is more convenient and rapid to fix, and the operation efficiency is improved.

The present invention relates to a spine fixation device containing a set screw having a double spiral form. The spine fixation device is characterized by comprising: a pedicle fixation screw which has a head portion having a receiving groove of a certain depth formed thereinside and a plurality of female screws formed in one region of the inner circumference of the receiving groove, and a screw portion extended from one side of the head portion lengthwise and embedded into a pedicle, and is fixed to a damaged pedicle; a spine rod which is received in the receiving groove to connect the pedicle fixation screw, thereby realigning the angle and interval of the pedicle; and a set screw which forms a plurality of male screws with the same screw inner diameter, the same screw thread direction and different pitches, and is screw-coupled to the female screws of the pedicle fixation screw to prevent the movement of the rod received in the receiving groove. Therefore, the fastening force of the pedicle fixation screw and the set screw is increased, the movement of the spine rod is prevented in case of the realignment of the pedicle, and a spine can be realigned stably.

The invention belongs to the technical field of medical instruments, and particularly relates to a pedicle hook with a U-shaped hook seat. The pedicle hook comprises the hook seat and a hook body connected with the hook seat, the hook seat comprises a first side wall and a second side wall which are connected to form a U-shaped structure through an arc-shaped portion, and the inner side surface of the first side wall and the inner side surface of the second side wall are provided with threads used for allowing a screw plug to be screwed in and out. According to the pedicle hook with the U-shaped hook seat, the hook seat is of the U-shaped structure which is provided with the internal threads used for allowing the screw plug to be screwed in and out, therefore, the pedicle hook can be fixedly connected with a pedicle fixing system very conveniently, and the fixing tightness degree can be adjusted.