176 results about "Vertebral pedicle" patented technology

Pedicle-based intradiscal fixation devices, systems, instruments, and methods thereof. The implant or a portion thereof may be composed of a shape-memory material, which has a curved shape-memory orientation and a temporarily straight orientation. The implant may be configured to be inserted into a pedicle of an inferior vertebra, through the vertebral body of the inferior vertebra, and into the vertebral body of the superior vertebra to thereby stabilize the inferior and superior vertebrae.

The utility model discloses a 3D printing porous pedicle screw which comprises a screw body part and a screw cap part, the screw body part comprises a cortical bone thread area close to one end of the screw cap part and a cancellous bone thread area far away from one end of the screw cap part, and a porous structure area is arranged at one end, not connected with the screw cap part, of the screw body part. The porous structure area comprises an inner core column extending in the axial direction of the nail body part, at least one reinforcing beam and a porous structure, the reinforcing beams extend outwards from the periphery of the inner core column, and the porous structure is annularly distributed on the outer periphery of the inner core column. The porous structure can efficiently induce bone tissue to grow in, the screw and a vertebral body are connected into a whole, stress is effectively dispersed, the stability of the screw is improved, the porous structure is arranged on the vertebral body at the front end of the screw, screw breakage caused by stress concentration of the screw in a vertebral pedicle area can be avoided, meanwhile, the stability of the screw can be better improved through the reinforcing beam, and the service life of the screw is prolonged. The possibility of fracture of a porous area of the screw is reduced, generalization performance is better, and the use experience feeling is improved.

This invention relates to a treatment device suitable for combined operative procedure of vertebroplasty and pediculoplasty. A treatment device includes a cylindrical driver capable of driving a screw into bone, an inner sleeve capable of being inserted into the driver, and a guide pin capable of being inserted into the inner sleeve, and is configured as follows. The screw includes on an outer wall (outer circumference) a thread that can tap into bone or cement, and a through hole that allows the inner sleeve to pass from a head to a tip. The driver can fit onto the head of the screw and when moved along the central axis and be joined to the screw, so as to transmit torque about the central axis to the screw. The inner sleeve includes a notch which protrudes, when the inner sleeve is inserted from the distal end of the driver in a state in which the screw and the driver are joined together, protrudes more proximally than a tip of the screw, preventing removal of the screw.

The invention discloses a screw feeding device which is suitable for a pedicle screw. The screw feeding device comprises an implanting mechanism and a torque applying mechanism which are in transmission connection with a pedicle screw; the torque applying mechanism is configured to be in an engaged state and a disengaged state with the implanting mechanism; when the torque applying mechanism and the implantation mechanism are in a joint state, the torque applying mechanism can transmit torque to the implantation mechanism; and when the torque applying mechanism and the implanting mechanism are in a separated state, the torque applying mechanism is separated from the implanting mechanism, so that the torque is prevented from acting on the implanting mechanism in the exiting process of the torque applying mechanism, and the pedicle screw is prevented from loosening. According to the vertebral pedicle screw, the operation time can be shortened, the operation steps can be simplified, the cooperation among instruments can be optimized, the complex operation of a surgeon on the cooperation of the instruments can be reduced, the vertebral pedicle screw cannot be loosened, and bone cement can be rapidly placed at the same time, so that the possibility of bone cement leakage and embolism can be reduced.

According to some embodiments, a method of accessing an intervertebral space of a patient's spine in a minimally invasive manner compromises creating a passage from a posterior end of a pedicle of a vertebral member using a probe, advancing the probe through the pedicle and to a main body portion of the vertebral member, advancing the probe through a superior endplate of the vertebral member and into the intervertebral space and enlarging the passage using at least one tap to create an enlarged passage from a posterior of the pedicle to the intervertebral space. In some embodiments, the enlarged passage traverses at least three cortical layers of the vertebral member.

The utility model provides a pedicle screw imbedding guide plate which comprises a holding part and at least two supporting arms which are connected to one end of the holding part and used for abutting against a pedicle of a vertebral arch, and an avoiding position used for avoiding spinous processes is arranged between every two adjacent supporting arms. The side, adjacent to the avoiding position, of at least one supporting arm is provided with a positioning assembly used for placement of a pedicle screw, and the positioning assembly comprises a positioning structure and a positioning channel penetrating through the positioning structure and used for placement of the pedicle screw. According to the pedicle screw positioning device, a positioning channel is formed in the pedicle screw, it is ensured that the pedicle screw can enter the pedicle at the optimal angle through the positioning channel, an operator can directly conduct screw implantation along the positioning channel through fixing of the supporting arm, pedicle screw implantation precision and operation efficiency are improved, meanwhile, dependence on image navigation in the operation process is reduced, and the operation efficiency is improved. Therefore, the safety and the effect of scoliosis orthopedic surgery are improved.

The invention provides an X-ray-based scoliosis 3D intelligent automatic diagnosis system, which is characterized in that a spine area bounding frame coordinate, a hip bone bounding frame coordinate and a vertebral pedicle bounding frame coordinate are extracted from spine coronal image data, and the first 17 results are extracted to be matched with the number and spatial distribution of typical vertebral bodies of a human body; the method comprises the following steps: obtaining a spine region sub-graph, a hip bone region sub-graph and a vertebral pedicle region sub-graph, converting the sub-graphs into tensors to obtain a bounding box, four angular point coordinates and corresponding confidence of each vertebral body, storing the bounding box, the four angular point coordinates and the corresponding confidence as a structured record, performing Cobb angle calculation according to the structured record, and converting the structured record into an anatomical segment identifier; cutting is conducted according to the spine area, the hip bone area and the vertebral pedicle area subgraph, segmented vertebral pedicles and hip bones are obtained, the major curvature type, the pelvis height and the rotation direction are judged according to anatomical segment identifiers, and the patient age is determined according to the midpoints of the upper edges and the lower edges of the vertebral bodies, the arrangement angle of the adjacent vertebral bodies, spine major curvature core parameters and the age of the patient. And outputting a scoliosis 3D intelligent automatic diagnosis result.

This invention discloses a guide plate device for spinal osteotomy and correction. Each first support member is fixed to the first guide plate body for connection with screws. The first guide plate body has a first window for locating the spinal laminectomy area. A rib resection groove is formed at the edge of the first window to determine the rib resection area. There are two rib resection grooves, arranged opposite each other on both sides of the first window. Each second support member is fixed to the second guide plate body for connection with screws. The second guide plate body has a second window for locating the pedicle osteotomy guide plate's resection area. There are two second windows, arranged opposite each other. The spinal laminectomy guide plate and the pedicle osteotomy guide plate share a single screw assembly. This invention avoids errors in judging the resection area based on human experience, and also avoids hand-holding the guide plate and guide plate position deviation during surgery.

This invention pertains to spinal pedicle screws, specifically locking spinal pedicle screws, including perforated pedicle screws and cortical bone screws that work with them. The proximal end of the self-locking master screw is thickened. A through-hole is provided in the thickened section of the pedicle screw, and the cortical bone screw is driven into the through-hole and fixed to the upper and lower cortical bone layers of the pedicle to form a triangular fixation. After the pedicle screw is implanted, both ends of the through-hole of the pedicle screw are located inside the pedicle. A hole is drilled from the posterolateral aspect of the pedicle using a special aiming device, passing forward and upward through the oblique hole of the pedicle screw, and then through the anterior and superior cortical bone of the pedicle. After measuring the length, a suitable cortical bone screw is selected, screwed in, and locked, fixing the posterolateral cortical bone, the pedicle screw, and the anterior and superior cortical bone of the pedicle. The screw is positioned in a safe area of ​​the superior cortical bone of the pedicle. The cortical bone screw is fixed to the upper and lower cortical bone of the pedicle by passing through the oblique hole, thus locking the position of the pedicle screw.

Pedicle bone anchor implants, assemblies, and methods thereof. The implant may include an expandable anchor having a body with expandable sections separated by one or more expansion joints, a plurality of expandable teeth, or an expandable head. The expandable anchor has a collapsed configuration and an expanded configuration, thereby creating a press-fit in adjacent bone.

The invention discloses an intelligent preparation and precise implantation method for a pedicle screw path based on attitude perception. The method comprises the following steps: generating an attitude monitoring module representing real-time attitude angle data of a surgical instrument; the adaptive fixing mechanism is connected with the posture monitoring module and enables the measuring reference axis of the posture monitoring module to be consistent with the working direction of the instrument; when it is judged that the real-time posture angle is matched with the ideal nail path angle, a prompt signal is generated and output, an expensive robot platform is not needed, and real-time monitoring and intelligent prompt of the angle in the operation can be achieved by adapting the micro posture monitoring module to a common abrasive drill and other instruments; the robot-level implantation precision can be achieved by doctors in traditional manual operation, the three industrial pain points of insufficient judgment precision depending on experience, high cost and complex operation of a robot navigation system and radiation risk caused by repeated perspective in an operation in the prior art are effectively solved, and the operation safety and universality are remarkably improved with extremely low cost.

The invention relates to the field of machining of medical instruments, in particular to a pedicle screw machining method and equipment, and the machining equipment comprises the steps that a plurality of micropores are machined in the circumferential wall of the smooth surface of the rear end of a screw rod of a pedicle screw through laser equipment; soaking the smooth surface processed with the micropores in a medicine tank of processing equipment; carrying out sand blasting and acid etching treatment on the threaded surface at the front end of the screw rod of the pedicle screw; and then cleaning and drying the pedicle screw to obtain a finished product. According to the invention, the smooth surface of the pedicle screw is soaked in the liquid medicine after being processed into the micropores, so that spraying on the smooth surface can be avoided, and the coating is prevented from falling off; in addition, osseointegration and bone growth can be promoted through soaking of the bone sustained-release medicine. Meanwhile, the threaded surface of the pedicle screw is subjected to sand blasting and acid etching treatment, the binding force between the screw and the bone can be effectively improved, faster osseointegration and higher anti-shearing capacity can be obtained, and the stability of internal fixation of the pedicle is effectively improved.

The invention belongs to the technical field of medical instruments, and particularly relates to a transpedicular vertebral body bone grafting device which comprises a mounting assembly. Comprising a mounting frame, jackets arranged on the two sides of the bottom of the mounting frame, threaded sleeves arranged on one sides of the jackets, threaded rods arranged in inner cavities of the threaded sleeves, hand wheels arranged at one ends of the threaded rods, fixed clamping plates arranged at the other ends of the threaded rods and sliding grooves formed in the top of the mounting frame. An adjusting assembly, comprising a sliding seat which is arranged in an inner cavity of a sliding groove and slides left and right along the sliding groove, a fixing pin arranged on one side of the sliding seat, a connecting rod arranged on one side of the sliding seat, hinge frames arranged on one side of the connecting rod, a hinge shaft arranged between the hinge frames, a self-locking motor arranged on one side of the hinge frames, and a turnover seat arranged on the surface of the hinge shaft, wherein the output end of the self-locking motor is connected with the hinge shaft. The bone grafting device is reasonable in structure, convenient to adjust, assemble and disassemble in the using process, high in flexibility, high in safety and beneficial to improving the success rate of an operation, and meanwhile the position and the angle of the bone grafting device are convenient to adjust.

The application provides a kind of based on deep learning pedicle screw channel planning method and device, the method comprises: extraction procedure, extract the pedicle CT image in the spine CT image to be extracted;Layering procedure, the pedicle CT image is sliced and layered along the pedicle cross section, confirm the pedicle boundary, and obtain a plurality of pedicle two-dimensional images in turn;Planning procedure, the center point of the pedicle two-dimensional image is obtained in turn, the center point is fitted, and the pedicle screw channel is obtained.The pedicle screw channel planning method and device based on deep learning provided in the embodiment of the application, by sequentially executing extraction, slicing, layering and confirming the boundary to the spine CT image, the pedicle two-dimensional image is obtained, the center point of the two-dimensional image is obtained in turn and the obtained center point is fitted to obtain the final pedicle screw channel, the rapid acquisition of the pedicle screw channel is realized, and the operation efficiency is improved.

The present invention discloses a pedicle screw path planning method, comprising: step S1: performing image segmentation on a spinal structure model to obtain a 3D voxel map of the target vertebra and pedicle; step S2: determining an initial screw radial direction and an initial screw radius based on the 3D voxel map of the target vertebra and pedicle; step S3: optimizing the initial screw radial direction and the initial screw radius based on the pedicle point cloud to obtain screw radial parameters and screw radius parameters; step S4: calculating the entry point and exit point coordinates of the pedicle screw based on the screw radial parameters and the pedicle centroid coordinates; step S5: simulating the swing range of the universal screw head based on the exit point coordinates to determine whether the screw rod passes through all pedicle screws on the same side, and if so, determining a planned path, and if not, iteratively executing steps S3 to S5 until the screw rod passes through all pedicle screws on the same side. This solution solves the problems of low efficiency and low success rate in pedicle screw placement and rod insertion.

A retractor blade assembly having a retractor blade having a track extending long on a face of the retractor blade, a screw entry at a bottom of the retractor blade comprising a window through which a bone screw is insertable, and a screw gate which engages the track on the retractor blade. Once the bone screw is placed through the screw entry, the screw gate lowers until the screw gate blocks the window.

The utility model provides a pedicle screw implantation guider. The pedicle screw implantation guider comprises a fixed guide rod, a sliding guide rod and a moving assembly. A positioning piece is arranged at one end of the fixed guide rod and used for being in positioning fit with a screw tail of an implanted screw, and the length direction of the fixed guide rod is the same as that of the screw. The sliding guide rod is provided with a first sliding piece, the first sliding piece is matched with the fixed guide rod in a guiding mode, and the sliding guide rod is perpendicular to the fixed guide rod. Due to the structural design of the guider, no matter how the fixed guide rod moves, the movable guide rod is always parallel to the fixed guide rod. The bone structure of a patient is not changed before and during the operation, so that for the vertebral pedicle, the included angle of the vertebral pedicle on the two sides of the same section of vertebral body is not changed, the direction of the vertebral pedicle on one side is used as a reference to determine the direction of the vertebral pedicle on the other side, interference of the posture of the patient, operation anesthesia and other factors is avoided, and the accuracy of the screw placement direction is higher. Positioning is more accurate, and operation safety can be improved.

A device for augmenting a vertebra. The device includes an expandable implant and a pedicle anchor. The pedicle anchor includes at least one anchoring element movably coupled to an anchor body. An actuator is movable within the anchor body to deploy the anchoring element into engagement with a vertebral pedicle. The anchoring element may be deployed in a same plane as a tissue support ski of the expandable implant. The actuator may be a rod including a knuckle or a cam. The tissue support ski may be recessed from an outer profile of the device. Struts of the expandable implant may be angled towards the tissue support ski in an insertion configuration. The device may be oval-shaped and provide means for rotating the expandable implant relative to the pedicle anchor, and for blocking the expandable implant in a predetermined orientation. Methods of deploying the device are also disclosed.

The utility model relates to medical instrument technical field, concretely relates to a lumbar screw device for osteoporosis, including fixed mainboard, still including fixing device, fixing device includes cone screw, pasting board, transverse process screw, stabilizer and hinged component, and the cone screw is with fixed mainboard screw thread cooperation, and pasting board is through hinged component and fixed mainboard swing joint, and stabilizer fixed mounting is on pasting board, and is located pasting board far from fixed mainboard's one side, and transverse process screw screw thread penetrates stabilizer, and through the cone screw and hit into cone, make fixed mainboard fixed on cone, and through the cooperation of transverse process screw and stabilizer, make pasting board fixed on pedicle, realize the auxiliary fixation of fixed mainboard, to this end complete the fixation to fractured lumbar vertebra, because reduced the use of screw, and then in guarantee fixed effect's simultaneously, reduced the destruction to lumbar vertebra.

A pedicle-lengthening implant may comprise an outer screw body configured to be inserted through a pedicle of a vertebra. The outer body has an upper portion and a lower portion. An inner bolt is disposed within the outer screw body, defining a longitudinal axis and configured to interact with each of the upper and the lower portions. Rotation of the inner bolt about the longitudinal axis causes the upper and lower portions of the outer screw body to separate axially along the longitudinal axis. The outer body may comprise external threads configured to engage bone of the pedicle. The inner bolt includes a threaded rod that engages first internal threads of the upper portion and internal threads of the lower portion at an inner bore of the outer screw body. The first internal threads of the upper portion and internal threads of the lower portion may have opposite thread directions.

A transpedicular spinal treatment system may include a transpedicular access port having an aperture positioned proximally to the distal end of the transpedicular access port. The transpedicular access port may be configured to enter a vertebra through the pedicle bone. A flexible member may be configured to translate along the lengthwise axis of the transpedicular access port. The aperture may allow the flexible member to extend from the aperture in a direction at least partially oblique to the lengthwise axis of the transpedicular access port. The flexible member may have an opening proximal to the distal end of the flexible member.

The utility model discloses a fracture reduction component for a pedicle screw. The fracture reduction component comprises the pedicle screw, the left side of the screw body assembly is fixedly connected with the right side of the reduction pedicle screw, the screw body assembly comprises an inner stud and a first screw arm, and the right side of the inner stud is fixedly connected with the first screw arm; and the left side of the breaking assembly is fixedly connected with the right side of the first nail arm. The fracture piece and the V-shaped fracture opening are used in cooperation, the fracture groove is pre-opened, so that the connecting face of the fracture groove is smaller, meanwhile, cut-off vibration is reduced, secondary injury to a patient after a product is fractured is effectively prevented, the fracture opening is matched with installation equipment needed in the operation process of the reduction pedicle screw, the screw body is made of stainless steel, and the fracture groove is not prone to falling off. The reduction pedicle screw has good biocompatibility and oxidation resistance and is relatively low in price, alloy steel has high strength and corrosion resistance, postoperative complications can be reduced, and the practicability of the reduction pedicle screw is improved.

A method and system for performing bone fusion and / or securing one or more bones, such as adjacent vertebra, are disclosed. The screws include a threaded tip connected to a main shaft and a threaded outer sleeve that rotates relative to the outer shaft until locked down. Independent rotation of the threaded outer sleeve relative to the threaded distal tip allows compression or distraction to modify the gap between the vertebral bodies. The screws are passed from the inferior to superior vertebra or superior to inferior, for example, through a trans-pedicular route to avoid neurological compromise. At the same time, the path of screw insertion is oriented to reach superior or inferior vertebra. An intervertebral cage of the system is configured for lateral expansion from a nearly straight configuration to form a large footprint in the disc space. The screws and cage may be combined for improved fixation with minimal invasiveness.

The utility model discloses a spinal fracture reduction supporting and fixing device, and relates to the technical field of medical instruments. The device comprises a plurality of pedicle screws, a connecting column and a locking assembly used for preventing the connecting column from loosening, and the locking assembly comprises a cushion block, a locking plug screw and an anti-loosening cover. According to the device, the locking assembly is arranged, after a plurality of pedicle screws are implanted into the vertebral pedicle on the same side of a vertebral body, the connecting column is placed in the groove, then the cushion block and the locking screw plug are sequentially installed in the groove, finally, the anti-loosening cover is pressed in, the two sides of the anti-loosening cover are clamped into the clamping grooves, and therefore the connecting column is fixed, and under the limiting effect of the anti-loosening cover, the locking screw plug and the anti-loosening cover are clamped into the clamping grooves. The locking screw plug is effectively prevented from loosening, so that the locking force of the pedicle screw and the connecting column is enhanced, meanwhile, the surface of the pedicle screw is subjected to roughening treatment, the more durable fixing effect is achieved, and a powerful guarantee can be provided for rehabilitation of a patient.

This invention discloses a pedicle screw mounting mechanism, including a pedicle screw mounter; the top of the pedicle screw mounter is provided with a limiting mechanism for restricting the displacement of the guide pin; the limiting mechanism includes an installation sleeve coaxially fixed to the top of the pedicle screw mounter; the installation sleeve is internally threaded with a guide post whose top protrudes from the installation sleeve; the guide post has a through hole in its middle for the guide pin to pass through; the top of the guide post is also provided with a locking component for locking the guide pin. This invention incorporates a limiting mechanism to lock the guide pin during surgery, thereby avoiding the risk of the guide pin piercing the abdominal cavity while moving with the pedicle screw, alleviating the surgeon's concerns and making the surgery safer and faster.

A pedicle replacement device is designed to both replace the pedicle through osseointegration and protect the nerves and surrounding tissue from injury by pedicle screws or other surgical devices and instruments. The implant is configured to shield a fixture, reduce nerve root irritation, and diminish loosening of the fixture, when the fixture is implanted into the void of a target site. The implant includes features for stabilizing and securing the implant within the void at the target site. For example, in one embodiment, the implant includes counterclockwise threads that stabilize the implant against rotational and extractive forces that could disturb the implant.

The invention relates to the technical field of medical instruments, in particular to a surgical reciprocating swing saw which comprises a cutter assembly, a reciprocating conversion assembly, a position adjusting assembly, a supporting assembly and a connector assembly, and the cutter assembly is used for conducting reciprocating swing saw cutting on bone tissue and comprises a cutter head and a cutter handle; the reciprocating conversion assembly is used for driving the cutter assembly to do reciprocating swing and is connected with the cutter assembly; the position adjusting assembly is used for adjusting to achieve conversion between the hidden state and the cutting state of the tool bit, and the tool assembly is rotationally sleeved with the position adjusting assembly. The reciprocating conversion assembly is sleeved with the supporting assembly, and one end of the supporting assembly is inserted into the position adjusting assembly. The position adjusting assembly is provided with a reference plate, the supporting assembly is provided with a tool bit position marking block, and the position of the tool bit is determined based on the relative position between the reference plate and the tool bit position marking block. According to the reciprocating swing saw for the operation, the vertebral pedicle can be effectively and rapidly cut off, and the vertebral pedicle can be cut off according to the required cutting depth.

The present application relates to the field of medical devices, and in particular to a flip-up assembly enhanced universal pedicle screw and a universal pedicle screw rod system, wherein the flip-up assembly enhanced universal pedicle screw comprises a main screw, a secondary screw detachably connected to the main screw, and a connector detachably connected to the secondary screw, wherein the main screw comprises a screw head, a screw rod, and a neck located between the screw head and the screw rod, wherein the diameter of the neck is smaller than the diameter of the screw head and the screw rod, one end of the secondary screw is sleeved on the neck, and one end of the connector extends from the screw head away from one end of the screw rod and is processed with a connecting thread. The present application has the advantages of improving the initial stability of the screw without increasing the number of surgical steps for the doctor, reducing the surgical time increased to improve the initial stability of the screw, and reducing the pain caused to the patient due to the long surgical time.

Pedicle-based intradiscal fixation devices, systems, instruments, and methods thereof. The implant or a portion thereof may be composed of a shape-memory material, which has a curved shape-memory orientation and a temporarily straight orientation. The implant may be configured to be inserted into a pedicle of an inferior vertebra, through the vertebral body of the inferior vertebra, and into the vertebral body of the superior vertebra to thereby stabilize the inferior and superior vertebrae.

Relates to the field of medical equipment, and discloses a lumbar spondylolisthesis repositor which comprises a forceps handle and further comprises a supporting plate arranged at one end of the forceps handle and used for supporting an end plate of a vertebral body; the supporting plate comprises a first abutting plate and a second abutting plate, wherein the first abutting plate is arranged on the forceps handle; the second abutting plate is arranged on the clamp handle and is the same as the first abutting plate in shape; the balls are arranged on the side, away from the first abutting plate, of the second abutting plate; the adjusting device is arranged on the side, away from the first abutting plate, of the second abutting plate and used for adjusting the extending distance of the ball in the second abutting plate, then the displaced cone is lifted to reset through a lifting rod, and in the moving process of the slipping cone, the slipping cone can be reset through rolling contact of the ball, so that the slipping cone is prevented from slipping off. The resistance of slipping reduction can be reduced, the shearing force of lifting the pedicle screw to the vertebral body is reduced, and the vertebral body reduction operation failure caused by loosening of the pedicle screw is prevented.