41 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 present invention provides a fusion door fixation device and spinal internal fixation system, comprising a fixation plate body and an optional fusion plate; the fixation plate body comprises an upper fixation plate for fixing the upper lamina at the lamina door, a lamina door support plate for supporting, and a lower fixation plate for fixing the lower lamina at the lamina door, which are connected in sequence. The lower fixation plate is provided with a second fusion hole, in which a second fusion screw is provided. The second fusion screw passes through the vertebral body at the current level and is fixed to the vertebral body at the next level; the fusion plate is fixed to the vertebral body at the current level and is located on the opposite side of the lower fixation plate. The fusion plate is provided with a first fusion hole, in which a first fusion screw is provided. The first fusion screw passes through the vertebral body at the current level and is fixed to the vertebral body at the next level. The fusion screw is used to fix the lamina to the lamina at the next level, thereby achieving rigid fixation between the facet joints while maintaining stable support, providing favorable conditions for fusion between the vertebral bodies.

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 present invention relates to the technical field of medical devices, and relates to a dynamic bending fatigue test device and test method for a lamina fixing plate. The present invention includes: a base, a bracket test block, a connecting block, and a fatigue testing machine. A sliding groove for the movement of the bracket test block is provided inside the base, and a locking bolt for fixing the bracket test block is provided on the base; Two groups of bracket test blocks are symmetrically arranged and slidably arranged in the sliding groove. There is an intermediate groove between the bracket test blocks. Two groups of lamina fixing plates are symmetrically arranged in the intermediate groove. The lower end of the lamina fixing plate is fixed to the upper end of the bracket test block, and a groove is provided inside the lamina fixing plate; The connecting block is fitted in the groove and the upper end surface of the connecting block is fixedly connected to the lamina fixing plate. A loading hole is provided on the upper surface of the connecting block; The loading block of the fatigue testing machine is fixedly connected to the loading hole, and the connecting plate of the fatigue testing machine is fixedly connected to the base. By applying a dynamic load to simulate the situation of the postoperative opening lamina being squeezed, the service life and corresponding fatigue performance of the lamina fixing plate are measured.

The present invention relates to a stepped double-L-shaped upper position reduction lamina inner surface grinding spinal surgery robot, comprising a robot body, a three-axis adjustment device provided on the robot body, a stepped double-L-shaped manipulator mounted on the three-axis adjustment device, and a control console provided on the robot body, which is electrically connected to the three-axis adjustment device and the stepped double-L-shaped manipulator, wherein the three-axis adjustment device comprises an X-direction guide drive device, a Y-direction guide drive device provided on one side of the X-direction guide drive device, and a Z-direction guide drive device provided on the X-direction guide drive device. Thus, during the descent of the Z-direction guide drive device, the L-shaped short hook and the L-shaped grinding head are precisely rotated from a direction consistent with the long axis of the human body to a position where the upper surface of the L-shaped short hook is flush with the inner surface of the lamina, and then can be changed to enter the spinal canal perpendicular to the long axis of the human body, thereby ensuring that no damage is caused to the nerves.

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 porous structure niti alloy vertebral plate which comprises a vertebral plate body, a limiting groove is formed in the vertebral plate body, a sliding block is connected in the vertebral plate body in a sliding mode, the two sides of the sliding block are connected with the interior of the limiting groove in a sliding mode, a secondary positioning hole is formed in the sliding block, and the secondary positioning hole is connected with the interior of the limiting groove in a sliding mode. End V-shaped recesses are formed in the two ends of the vertebral plate main body, side V-shaped recesses are formed in the two sides of the vertebral plate main body, and a through groove is formed in the vertebral plate main body. According to the niti alloy vertebral plate with the porous structure, the vertebral plate main body is preliminarily fixed through cooperation of second auxiliary positioning holes and screws, then reinforced fixing can be conducted again through cooperation of main positioning holes and screws, and sliding adjustment can be conducted along limiting grooves by sliding sliding blocks; after the sliding block moves to a proper position, key parts can be reinforced through the secondary positioning holes and the screws.

The utility model discloses a visual spine endoscope fusion channel device, which relates to the field of medical equipment and comprises a soft tissue expansion rod, a sleeve, a first fusion channel and a second fusion channel. When the second fusion channel is used, two arc-shaped blocking faces are fixed to the two sides of the end, located in the body of the patient, of the second fusion channel respectively, and the blocking faces are used for separating and blocking the neurodural mater and the export nerve root to the outer side of the second fusion channel. The soft tissue expansion rod, the sleeve, the first fusion channel and the second fusion channel which are designed to be of an oval structure are different from an existing coaxial endoscope system, in the operation process, the area of an incision formed in the body of a patient is smaller, and the operation space is larger; under the direct view of an endoscope camera system, conventional operation tools such as vertebral plate forceps are used for biting and removing bone tissues such as vertebral plates and zygopophysis for windowing, so that the operation time is greatly shortened, the situation that channels with different sizes are replaced for multiple times is avoided, and multiple injuries to soft tissues of a patient caused by repeated replacement of the channels are avoided. The replacement frequency is reduced, and the surgical operation time is shortened.

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.

The invention discloses an absorbable composite vertebral plate, and relates to the technical field of medical instruments. The absorbable composite vertebral plate comprises a plurality of main bodies and two medical lines, the main bodies are made of a composite material prepared by mixing polylactic acid and non-grafted hydroxyapatite nanocrystal particles, or the main bodies are made of a composite material prepared by mixing hydroxyapatite modified polylactic acid with nanocrystal particles grafted on the surface, the main bodies are in a long strip shape, and the medical lines are arranged on the main bodies. Three rows of through holes are formed in the main body; one medical line penetrates through the through holes in the upper ends of the main bodies, the other medical line penetrates through the through holes in the lower ends of the main bodies, the main bodies are connected in series through the two medical lines in a bamboo slip mode, and the two ends of each medical line are connected to a nail rod in a spine nail rod system. According to the absorbable composite vertebral plate, the problems of stress shielding and metal debris caused by a metal vertebral plate can be avoided, CT and MRI examination are not affected, meanwhile, elements such as calcium and phosphorus are provided for bone repair, and bone repair and fusion are facilitated.

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.

The invention relates to the technical field of medical instruments, in particular to a vertebral plate non-fusion fixing device which comprises a vertebral plate fixing body. The upper supporting surface of the vertebral plate fixing main body is also provided with a backward movement prevention bulge; the anti-backward-movement bulge is of a triangular structure and is matched with the triangular three-dimensional space at the lower dome position of the vertebral plate in shape; and the backward movement prevention bulge is in direct contact with the lower dome of the vertebral plate so as to prevent the fixing device from moving towards the vertebral body of the spine. The vertebral plate non-fusion fixing device is installed at the vertebral plate gap position of adjacent vertebral bodies in the spine posterior non-fusion operation in a matched mode, the vertebral plate gap is expanded and fixed, and the folded posterior longitudinal ligament and the fibrous ring are stretched, so that the spinal canal stenosis degree is reduced, meanwhile, the upper diameter and the lower diameter of intervertebral foramen of the same section are increased, the nerve root canal cross section area is enlarged, and the spinal canal stenosis degree is improved. The nerve root stress is relieved. The fixing device can further enhance the stability of the spine at the segment, and meanwhile the spine motion range of the segment is reserved.

The invention relates to an adjustable vertebral plate fixing plate system, which comprises a vertebral plate assembly, a vertebral plate fixing plate and a vertebral plate fixing plate, the vertebral plate assembly is configured to at least adjust the distance between the first end part and the second end part; the first supporting assembly is rotationally connected with the first end part; and the second supporting assembly is rotationally connected with the second end part.

The utility model discloses a cervical posterior vertebral plate fixing plate which comprises an inclined plate, a first bending portion, a second bending portion, a lower clamping plate and a first fastener, the first bending portion and the second bending portion are arranged at the two ends of the inclined plate respectively, the lower clamping plate is close to the first bending portion, and the first fastener is close to one end of the lower clamping plate. The first fastening piece is in threaded connection with the inclined plate, and the lower clamping plate and the first bending part clamp and fix the vertebral plate under the ejection of the first fastening piece; the first bending part and the second bending part are respectively used for connecting two vertebral plates and connecting the two vertebral plates into a whole. One end of the lower clamping plate moves to the first bending part under the ejection of the first fastening piece, the lower clamping plate abuts against the vertebral plate, and the vertebral plate of the human body is fixed between the lower clamping plate and the first bending part, so that the vertebral plate is clamped and fixed by the lower clamping plate and the first bending part, and the second bending part is conveniently fixed on the vertebral plate.

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 provides an interbody fusion device, comprising: a shell and a vertebral lamina, wherein the height of the shell is not less than the height of the vertebral lamina, and an accommodating chamber is formed between the shell and the vertebral lamina. The vertebral lamina is symmetrically arranged vertically and vertically, and is provided with a first slide rail and a second slide rail, as well as a vertical groove and an annular groove. The vertebral lamina has a multi-layer design, with a first vertebral lamina and a second vertebral lamina respectively arranged from the inside out; a transmission device, comprising a first lifting column and a second lifting column, both of which have reverse threads on their outer surfaces; and a stop device, which is sleeved on the aforementioned first and second lifting columns and consists of a dovetail protrusion and a dovetail groove; and a driving device, comprising a retaining ring, a support rod, a support block, and a support groove. The retaining ring is detachably connected to the support rod and placed in the annular groove, and the support rod is inserted into the support groove and fixedly connected to the support block. The technical solution of this application can effectively solve the problem of damage to autologous bone caused by the surface of the prosthesis during surgery.

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.

A translaminar pedicle anchor suspension system (referred as T-PAS system) applicable to vertebral surgeries is disclosed. The T-PAS system comprises: at least one pedicle anchor capable of being fixed to a pedicle of a lower vertebral segment, at least one suspension ligament having one end thereof fixed to the pedicle anchor, and at least one washer capable of fixing the other end of the suspension ligament to a contralateral side of a lamina of an upper vertebral segment. By using the suspension ligament to suspend the upper vertebral segment via a tunnel drilled on the lamina, not only the spine can be dynamically stabilized, but also the use of traditional pedicle screws and bone fusion can be avoided.

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.