26 results about "Vertebral lamina" patented technology

The present disclosure is directed to devices, kits, and methods for treating lumbar spinal stenosis by at least partially decompressing a compressed nerve root. The method can include identifying the compressed nerve root and percutaneously accessing a region of a lamina located adjacent to the compressed nerve root. The method can also include forming a channel through the region of the lamina, wherein the channel can be formed medial to a lateral border of the lamina. Further, the method can include expanding the channel in a lateral direction.

The application discloses a safe operation device suitable for spine minimally invasive surgery, which comprises a mirror-under power drill and an electric safety protection sleeve, wherein the handle of the mirror-under power drill and the drill are matched with the electric safety protection sleeve; the handle is connected with the drill, and the drill penetrates through the electric safety protection sleeve. The application provides a safe operation device suitable for spine minimally invasive surgery, which comprises a mirror-under power drill and a safety protection sleeve. When in use, the safety protection sleeve is directly fixed on the surface of the lamina to be removed, the mirror-under power drill can penetrate through the sleeve to complete the mirror-under grinding operation of the lamina, and the real-time lamina removal condition can be clearly seen through the end observation hole, so that the lamina is quickly removed while the nerve root is completely ensured not to be damaged.

The application provides an artificial lamina for spinal decompression surgery, which comprises an arc-shaped lamina, both sides of the arc-shaped lamina are provided with C-shaped rotating grooves arranged along the length direction, the cross section of each C-shaped rotating groove is greater than one-half of a circle, both sides of the arc-shaped lamina are rotationally connected with arc-shaped wing plates matched with the arc shape, one side of each arc-shaped wing plate is provided with a rotating connecting shaft matched with the corresponding C-shaped rotating groove, and the free side of each arc-shaped wing plate is provided with a connecting plug strip arranged in the arc direction of the arc-shaped lamina, and each connecting plug strip is a porous mesh structure. The application uses the embedding method of the porous mesh structure to fuse and fix with the vertebrae, so that the bone-implant combination is mechanically stable and irreversible.

The present disclosure is directed to devices, kits, and methods for treating lumbar spinal stenosis by at least partially decompressing a compressed nerve root. The method can include identifying the compressed nerve root and percutaneously accessing a region of a lamina located adjacent to the compressed nerve root. The method can also include forming a channel through the region of the lamina, wherein the channel can be formed medial to a lateral border of the lamina. Further, the method can include expanding the channel in a lateral direction.

A laminoplasty plate (10) comprises: a first fixing part (1) and a second fixing part (2) respectively fixed to a first cutting end part and a second cutting end part of a vertebral arch; and a spacer part (3) extending between the first fixing part (1) and the second fixing part (2). The first fixing part (1) includes: a first engagement part (4) and a second engagement part (4) that are disposed at an interval from each other and are disposed respectively on the posterior side and the anterior side of the first cutting end part; and a connection part (6) that connects the first engagement part (4) and the second engagement part (5) so as to be displaceable in a direction approaching each other.

The utility model discloses a thoracic vertebra vertebral plate reconstruction system, including arch bridge type artificial vertebral plate and set screw, arch bridge type artificial vertebral plate includes arc-shaped main part, fixed plate and anti-slip teeth, the fixed plate is provided with two, and the fixed plate is provided at the both ends of arc-shaped main part respectively, and the anti-slip teeth are provided at the joint of fixed plate and arc-shaped main part. The anti-skid teeth are arranged on one side far away from the arc; a mounting hole is formed in the middle of the fixing plate, and the fixing screw is matched with the fixing plate. The thoracic vertebra vertebral plate reconstruction system is an artificial vertebral plate reconstruction system which is simple in structure, convenient to install and beneficial to thoracic vertebra bone tissue growth.

A surgical screw guide configured to guide at least one surgical screw into a target bone structure. The surgical screw guide may be a pedicle screw guide (1). The pedicle screw guide (1) may comprise a first guide tube (11a) and a second guide tube (11b) arranged to be positioned either side of the spinous process, St, of a target vertebra, Vt. Each of the first and second guide tubes (11a, 11b) may comprise an internal bore configured to guide a pedicle screw (115a, 115b) into the target vertebra, Vt. The pedicle screw guide (1) may comprise first and second support legs (15a, 15b) arranged to be positioned either side of the spinous process, St, of the target vertebra, Vt and comprising a distal end (17a, 17b) adapted to mate with a lamina of an adjacent vertebra, Va. The pedicle screw guide (1) may be removable after the pedicle screws (115a, 115b) are inserted into the target vertebra, Vt, using the pedicle screw guide (1).

This invention relates to the field of medical device technology, specifically to an electrode fixation assembly for an electrical stimulator: It includes a dual-channel cannula, a fixing screw, and a screwdriver. The dual-channel cannula comprises an endoscopic main channel and an electrode secondary channel. A fixing screw, capable of being fixed to the bony structure of the vertebral lamina or spinous process, is used. The electrode is embedded in the electrode groove of the screw head and tightened with a nut to achieve bony fixation, completely solving the problems of poor reliability and easy loosening and displacement associated with traditional soft tissue fixation. Secondly, by setting up a dual-channel cannula where the endoscopic main channel and the electrode secondary channel intersect, the entire process of fixing screw implantation, electrode placement, and nut tightening can be completed under direct endoscopic visualization, avoiding complex suturing operations in a confined space and significantly reducing surgical difficulty. Finally, because it is fixed to the bony structure, postoperative patients do not require strict bed rest and can move early, effectively avoiding complications such as pneumonia and thrombosis caused by prolonged bed rest.

An implant is provided for connecting the vertebral arch plate with the epiphysis that has been separated from the lateral mass of the vertebra during the laminoplasty procedure. [Solution] The implant (10) has a first portion (20) configured to engage with the lateral mass (120). The first portion has a lateral opening (34) for receiving a fastener (36) for fixing it to the lateral mass. The implant has a second portion (60) configured to engage with the epiphysis (160). The second portion is connected to the first portion such that the second portion is rotatable relative to the first portion about a rotational axis. The second portion has a lateral opening for receiving a fastener. The implant is configured so that the first portion can be fixed to the lateral mass prior to the separation of the arch from the lateral mass.

This utility model discloses a laminar fixation device, comprising: a plate holder, the plate holder including a handheld part, a cylindrical tube fixedly connected to the upper part of the handheld part, two clamping plates elastically connected to one end of the cylindrical tube, a fixation plate clamped between the two clamping plates, and a rod body provided in the hollow part of the cylindrical tube. During use, this utility model can fix the position of the fixation plate through the threaded rod, so there is no need to worry about the fixation plate slipping out of control during the entire implantation process. In addition, the tight connection between the threaded rod and the fixation plate provides a reliable anchor point, so that the fixation plate can be firmly fixed in place throughout the entire operation, thereby greatly improving the accuracy and safety of the operation, solving the problem of possible displacement of the fixation plate in traditional surgery, allowing surgeons to operate with confidence without having to worry about the stability of the fixation plate.

The present technology provides patient-specific vertebral implants. The implants can include a cage having a geometry contoured to mate with an inferior surface of a superior vertebra and a superior surface of an inferior vertebra at a first target position. The implants can also include a plate having a geometry contoured to mate with an identified anatomical structure at a second target position. The cage and plate can be coupled in a predetermined three-dimensional orientation that simultaneously permits the cage to occupy the first target position and the plate to occupy the second target position when the implant is implanted.

A system may be configured to maintain spacing between a superior spinous process and a superior lamina, and an inferior spinous process and an inferior lamina, of adjacent vertebrae of a spine. The system may include an implant that includes two superior wings that extend superiorly from a proximal superior surface such that, in an implanted position, the superior spinous process may be engaged therebetween. The implant may also include two inferior wings that extend inferiorly from a proximal inferior surface such that, in the implanted position, the inferior spinous process may be engaged therebetween. The system may include a clamp that includes two superior arms configured to engage the two superior wings to prevent disengagement of the two superior wings from the superior spinous process and two inferior arms configured to engage the two inferior wings to prevent disengagement of the two inferior wings from the inferior spinous process.

This invention relates to a combined device for repairing lumbar spondylolysis based on anatomical morphology, comprising: a universal pedicle screw, the end of which is movably connected to a universal head; a bone plate assembly, which is movably connected to the universal pedicle screw; the bone plate assembly includes a fixation rod, a lamina bone plate, and a bend; the fixation rod is disposed in the universal head, the distal end of which extends out of the universal head, and the middle part of the fixation rod is rotatably connected to the universal head; the lamina bone plate is disposed at the end of the fixation rod, and the two are integrally formed; the bend is inclinedly disposed at the distal end of the lamina bone plate. The advantages of this invention are that the combined use of the universal pedicle screw and the bone plate assembly takes into account both the axial and sagittal tilt angles of the lumbar lamina, and is more closely fitted to the lamina where the spondylolysis is located compared with traditional hook-type spondylolysis repair devices, adapting to the complex three-dimensional anatomical morphology of the lumbar lamina, with high fixation strength and good fixation stability.

The article to which the design relates is a spinal implant called a laminoplasty plate, which is used as a plate to fix the osteotomized vertebral arch during laminoplasty. The spinal implant is bent and deformed to fit the bone shape, and then inserted between the incised vertebral arches while fixing the upper and lower ends to the bone with screws. It has strength equal to or greater than that of the bone, and is designed to maintain the enlarged spinal canal until the bone in the bone groove (hinge) area heals.

Systems and methods are disclosed for maintaining spacing between a superior spinous process and a superior lamina, and an inferior spinous process and an inferior lamina of adjacent vertebrae of a spine. A system may include an implant having a proximal superior surface with a superior concavity shaped to receive the superior spinous process, a proximal inferior surface with an inferior concavity shaped to receive the inferior spinous process, a distal superior surface, distal to the proximal superior surface, that faces the superior lamina, and a distal inferior surface, distal to the proximal inferior surface, that faces the inferior lamina. The implant may further have a threaded member extending along a proximal-distal direction, that rotates to urge the implant to move from a retracted configuration to a deployed configuration by urging the distal superior surface and the distal inferior surface to move apart.

This invention provides a vertebral prosthesis, comprising: a superior lamina and a inferior lamina; a wave spring, which is composed of multiple strands of parallel twisted sheets and is disposed between the superior and inferior lamina; a support plate, located in the middle of the wave spring, the support plate being annular in shape with a circular track inside, and a limiting annular groove on its outer edge; an aspherical core, which is elliptical in shape, its rotation surface being tightly placed between the upper lamina arcuate surface at the bottom of the superior lamina and the lower lamina arcuate surface at the top of the inferior lamina; and limiting cylinders, disposed around the aforementioned aspherical core, forming a sliding groove between the limiting cylinders, with the endpoints of the aspherical core movably placed within the aforementioned sliding groove. This application solves the technical problem of enabling the prosthesis to reasonably restore or partially restore the physiological range of motion of the resected segment while ensuring sufficient support strength and anti-displacement capability.

The utility model discloses a cervical vertebra lamina reinforcing device. The reinforcing device comprises an upper fixing piece, a lower fixing piece and a connecting rod, the upper fixing piece is arranged above the lower fixing piece, one end of the connecting rod is rotationally connected with the upper fixing piece, the other end of the connecting rod penetrates through the lower fixing piece and is connected with a fixing belt, and the fixing belt is detachably connected with a human body. The lower fixing part comprises two shaping plates and an air bag part located between the two shaping plates, the shaping plate located at the upper position is fixedly connected with the connecting rod, the shaping plate located at the lower position is slidably connected with the connecting rod, and the distance between the two shaping plates is adjusted by adjusting the inflation degree of the air bag part. One end of the connecting rod is fixed to the back of the human body, and then the other end of the connecting rod is connected with the upper fixing piece to achieve auxiliary head supporting, and the fixed height position is determined; the lower fixing piece with the built-in air bag piece is controlled to stretch, so that the lower shaping plate makes contact with the shoulders to achieve auxiliary fixing of the connecting rod, the acting force of shoulder movement is buffered, and the use feeling is improved.

The invention relates to the technical field of teaching instruments, provides a dynamic anatomy demonstration device for thoracic vertebra ligamentum flavum, and solves the problem that students are difficult to realize operation skill transformation due to the fact that an existing spinal surgery teaching tool cannot realize three-dimensional shape recovery and dynamic reversible operation of an operation at the same time. The device comprises simulated vertebrae arranged at intervals; the simulated intervertebral discs are arranged between the adjacent simulated vertebrae; the simulated vertebral plate is arranged on one side of each simulated vertebra; the simulated ligamentum flavum is arranged on one side, close to each simulated vertebra, of each simulated vertebral plate; each simulated vertebra and / or each simulated vertebral plate and / or each simulated ligamentum flavum are configured with a standard model and a pathological model, and the pathological model has morphological characteristics different from those of the standard model; through the magnetic blocks and the adsorption blocks, the simulated vertebrae, the simulated intervertebral disc and the simulated vertebral plate are converted into independent modules which can be rapidly disassembled and assembled, and after dynamic anatomy demonstration of the ligamentum flavum is carried out, teaching demonstration and operation practice can be repeated.

The application relates to an orthopedic support, comprising a spinous process support and a lamina support connected with each other, wherein the spinous process support comprises a first surface away from the lamina support and a second surface connected with the lamina support, wherein the spinous process support comprises a first channel and a second channel for a bone nail to pass through the first surface. The spinous process support is fixed at the pedicle of the vertebra by the bone nail, the stability and controllability of the lumbar structure movement can be achieved, the original movement of the lumbar vertebra is simulated, the dynamic movement of the spine is ensured, and the postoperative movement of the patient is more flexible. The application also comprises an orthopedic support system.

The invention discloses a fusion cage selection method, a fusion cage, a device, a storage medium and electronic equipment. The method comprises the following steps: acquiring a cervical vertebra medical image of a target object; determining a first vertebral foramen area of the cervical vertebra of the target object before lesion and a second vertebral foramen area of the target object after lesion based on the cervical vertebra medical image; determining a target opening area of the vertebral hole based on the first vertebral hole area and the second vertebral hole area; fusion cage parameters are determined based on the target distraction area, a target fusion cage is determined from the multiple fusion cages based on the fusion cage parameters, and the target fusion cage is used for being supported between two vertebral plates of the cervical vertebra of the target object so as to expand the vertebral foramen area. By means of the fusion cage selection method and device, the problem that the accuracy of fusion cage selection is low due to the fact that the fusion cage needing to be used in posterior cervical single-side opening canalis vertebralis enlargement is selected according to artificial experience in the related technology is solved.

A surgical technique for lumbar spondylolysis fracture fixation is provided. An instrumentation set for use in the method is also provided. The set includes an anchor configured to attach to a pedicle of a fractured vertebra, a flexible band configured to attach to the anchor, and a hook configured to hook under a lower lamina of a fractured vertebra and further configured to receive the flexible band. The set also includes an inserter for placing the anchor, and a tensioner device having a distal end configured to hold the hook against the lower lamina, and a proximal end configured to secure the flexible band.

This invention relates to an artificial vertebral lamina for posterior spinal reconstruction and its preparation method. The artificial vertebral lamina comprises: an integrally formed rectangular plate and a biomimetic spinous process; the biomimetic spinous process is disposed on one side of the rectangular plate, and a through groove is provided on the side of the rectangular plate away from the biomimetic spinous process, wherein the axis of the biomimetic spinous process, the axis of the through groove, and the center line of the rectangular plate overlap; the roughness of the side of the rectangular plate with the through groove is less than the roughness of the side with the biomimetic spinous process; a plurality of first through holes are symmetrically arranged on the rectangular plate on both sides of the biomimetic spinous process, and a plurality of second through holes are uniformly distributed on the biomimetic spinous process; the diameter of the plurality of first through holes is smaller than the diameter of the plurality of second through holes. This device has the advantages of simple structure, no need for assembly, and high stability of spinal reconstruction.

The application discloses a vertebral plate reduction fixing system and an operation method thereof, and particularly relates to the technical field of medical instruments, which comprises a vertebral plate reduction fixing plate, a vertebral plate reduction fixing screw and a mounting instrument for grabbing the vertebral plate reduction fixing screw; the vertebral plate reduction fixing plate is provided with at least three first mounting holes and at least two second mounting holes, the vertebral plate reduction fixing screw is mounted in the first mounting hole and the second mounting hole, adjusting sliding grooves for the sliding of the vertebral plate reduction fixing screw are arranged between the at least three first mounting holes, and the head of the vertebral plate reduction fixing screw is provided with a double nut mechanism. The vertebral plate reduction fixing plate, the vertebral plate reduction fixing screw and the mounting instrument are arranged, the vertebral plate reduction fixing system in the intraspinal tumor resection is improved, especially for the intraspinal tumor of multiple segments, the vertebral plate and the spine are fixed in the vertebral plate spinous process complex reduction operation after the tumor resection, and anatomic reduction is achieved.

The present application relates to the technical field of medical equipment, and discloses a cervical vertebra minimally invasive lamina distraction device, which comprises a handle, and a booster cavity is formed in the handle. Through the transmission and positioning assembly, after holding the handle with one hand, repeatedly pressing the pressing plate with the big thumb can make the piston rod slide in the booster cavity, increase the pressure, drive the resistance plate to open, and after opening, the clamping column and the driving gear are clamped and fixed in position. This not only simplifies the operation and saves time, but also accurately controls the opening force, solves the problem that the lamina distraction forceps are difficult to finely adjust in a small space, improves the success rate and safety of the operation, and when the operation is completed, the big thumb presses the pressing disc, the long groove is in negative pressure, the clamping rod is retracted, the piston rod slides down and the resistance plate contracts with the help of the limiting spring, so that the device is quickly taken out. This process greatly shortens the operation time, reduces the operation difficulty of the doctor and the operation risk of the patient.

The application discloses a selection method of a fusion device, the fusion device, a device, a storage medium and an electronic device. It relates to the field of medical instruments. The method comprises the following steps: acquiring a cervical vertebra medical image of a target object; determining a first foramen area of the cervical vertebra of the target object before a lesion and a second foramen area of the target object after the lesion based on the cervical vertebra medical image; determining a target distraction area of the foramen based on the first foramen area and the second foramen area; determining a fusion device parameter based on the target distraction area, and determining a target fusion device from a plurality of fusion devices based on the fusion device parameter, wherein the target fusion device is used to support between two vertebral plates of the cervical vertebra of the target object to expand the foramen area. Through the application, the problem that the related art relies on manual experience to select the fusion device required in unilateral open-door laminoplasty of the cervical vertebra is solved, and the accuracy of selecting the fusion device is low.