124 results about "Vertebral arch" patented technology

The invention relates to the technical field of bone implants for minimally invasive surgery, and particularly discloses an implant for percutaneous minimally invasive thoracolumbar vertebral fracture, which comprises a vertebral body forming body, the vertebral body forming body comprises a vertebral body forming body head and a plurality of blade parts arranged at the rear end of the vertebral body forming body head in a surrounding manner, the vertebral body forming body head is provided with a needle guide hole penetrating along the axial direction, and the needle guide hole is communicated with the blade parts; a containing cavity is defined by the blade parts; the front end of the threaded guide rod and the head of the cone forming body are integrally formed, the needle guide hole penetrates through the threaded guide rod in the axial direction, and the rear end of the threaded guide rod extends out of the containing cavity; the pedicle screw is provided with a threaded hole penetrating in the axial direction, the threaded hole is in threaded connection with the threaded guide rod, the pedicle screw comprises a screw head and a threaded part arranged at the rear end of the screw head, and the screw head is arranged in the containing cavity and expands the blade part. According to the implant for the percutaneous minimally invasive thoracolumbar vertebral fracture, surgical wounds are reduced, the vertebral restoration effect is good, the stability of a vertebral formed body is guaranteed, and the surgical time can be saved.

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.

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.

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.

Systems and methods for automatically determining pedicle screw trajectories for surgery may be provided. A scan of a spine may be received, and positions of one or more vertebra and one or more components of the one or more vertebra in the scan may be identified. Next, a screw trajectory planning algorithm may determine an initial screw trajectory plan using the positions of the one or more vertebra and the one or more components. The screw trajectory planning algorithm may then determine a revised screw trajectory plan by revising the initial screw trajectory plan according to weighted factors.

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.

The invention discloses a minimally invasive degradable reduction device for thoracolumbar vertebral fracture, and relates to the technical field of medical instruments. The mounting mechanism is mounted on the outer wall of the connecting rod in a sleeving manner; the pedicle screw is movably inserted into the middle of the top end of the mounting mechanism; an implantation mechanism; through cooperative work of the connecting rod, the mounting mechanism, the pedicle screw and the connecting mechanism, the whole reduction device adapts to minimally invasive approach modes such as percutaneous puncture and can be implanted into the body of a patient through a percutaneous puncture channel, a skin incision of the minimally invasive approach is small, damage to surrounding tissue is greatly reduced, and the reduction effect is good. Due to the layered design of the screw body in the pedicle screw, bone tissue ingrowth is promoted while the supporting strength is kept, and the reduction device is made of degradable materials, can be gradually degraded along with fracture healing after an operation and is metabolized and absorbed by an organism, and does not need to be taken out through a secondary operation, so that physical and mental pain of a patient is relieved; and the medical cost and the potential risk of the secondary operation are also reduced.

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 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.

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.

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.

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.

An orthopedic surgical system includes a processor configured to receive preoperative 3D image data of a planned pedicle screw placement in a patient's vertebra; obtain intraoperative or postoperative 3D image data of a pedicle screw placement in the patient's vertebra; and determine an accuracy measurement of the pedicle screw placement in the patient's vertebra based on the preoperative 3D image data and the intraoperative or postoperative 3D image data. The accuracy measurement of the pedicle screw placement may be based on a distance from a pedicle screw to a cortical bone of a patient's vertebra or a distance from a pedicle screw to region of interest of the patient.

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.

The invention belongs to the technical field of medical apparatus and instruments, and provides a closed vertebral nail path blood collection device and a use method thereof.The closed vertebral nail path blood collection device comprises an outer tube, a sliding way is formed in the top of the outer tube inwards along the axis of the outer tube, and a blood penetrating hole is formed in the bottom of the outer tube and communicates with the bottom of the sliding way; the piston is slidably connected in the slide way, a piston push rod is fixedly connected to the side, away from the blood penetrating hole, of the piston, a connecting assembly is detachably connected to the top of the outer tube, the standard nailing device clamps the outer tube through the connecting assembly, and the connecting assembly is fixedly connected with the piston push rod. The device can be seamlessly connected with an existing pedicle screw implantation process, and it can be ensured that pure vertebral screw channel bone marrow blood is collected in a closed environment.

The present disclosure relates to a medical instrument (2) for positioning a pedicle screw (100) for vertebral manipulation, comprising a housing (4) and a coupling unit (6) received on the housing (4), which is movable in a distal-proximal direction of the instrument (2) relative to the housing (4) and has a proximal base (8) and two opposing coupling arms (10) extending distally away from the base (8), each of which has a latching structure (12) for releasably engaging a counter-latching structure of the pedicle screw (100), wherein the instrument has a ramp structure (14, 30) along which the coupling arms (10) are displaced in a medial-lateral direction of the instrument (2) upon distal movement of the coupling unit (4) to release the latching engagement.

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.

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 present invention relates to a device for treating vertebral deformities, consisting of two rods (1 ), suitably curved to correct the deformity, which are attached by means of pedicle screws (2) at the level of the thoracic and lumbar vertebrae, comprising a plurality of segments (6, 3, 8), aligned and joined by a bushing (4), equipped with a transversal pin (7) that delimits the separation movement of the respective consecutive segments coupled thereto and, between two consecutive bushings (4), a bushing (5) sliding on the intermediate segment (3) on which it is mounted. A tightener (10) connects the first upper segment (6) forming each rod (1 ) to the last lower segment (8), passing through all the intermediate segments (3) and is provided with a tightening means that keeps all the segments aligned to form a rigid rod, and a loosening means that allows the separation between the segments and the displacement of the bushings (5) along the segment (3) on which they are mounted, so that the rod (1 ) can be lengthened to allow the patient's growth and the anteroposterior movement of the spine.

The present application discloses a pedicle cement screw, which comprises a screw body and a connecting arm in axial communication, the connecting arm is used for connecting with a surgical instrument, the screw body comprises a threaded connecting part and a head, at least one overflow hole is arranged on the front end side wall of the threaded connecting part, and the connecting arm and the head are connected in a detachable mode. The pedicle cement screw of the present application is inserted into the interior of a vertebral body, and the front end is connected with a bone cement mass injected in a Kummell cavity, the head is abutted against the rear edge of a pedicle, and plays a limiting role, so as to ensure that the bone cement mass and the pedicle cement screw cannot be displaced, and further ensure the stability. Meanwhile, the connecting arm and the head are connected in a detachable mode, after the operation is completed, the connecting arm is integrally detached, and will not cause stimulation to the surrounding soft tissues, and avoids symptoms such as pain and foreign body sensation caused to the patient.

An assembly for correcting spinal deformities may include at least lateral rods extending across adjacent vertebrae to be retained at either end by pedicle screws. A cross-coupler may be coupled to each lateral rod, and a longitudinal rod may run along the spine and be coupled to the lateral rods by the cross-couplers. The assembly may be used to correct spinal deformities by manipulating the pedicle screws or cross-couplers to rotate about the lateral rods or the longitudinal rod.

The application discloses a kind of percutaneous minimally invasive lumbar pedicle screw fixation system and matching instruments, comprising: shell;Telescopic rod, telescopic rod fixedly connected shell side;Handle, telescopic rod is fixedly connected with handle at one end away from shell;Distraction mechanism, located in the shell interior;Strip-shaped plate, located in the shell exterior, and is connected with distraction mechanism;Detection positioning device, located in the two sides of strip-shaped plate;Distraction mechanism contains first recess, motor push rod, trapezoidal slider, special-shaped slider, second recess and first motor, the gap of the skeleton needing to be treated is opened by distraction mechanism, the operation space of medical staff is increased, and medical staff can better observe and handle pathological tissue, wherein the angle and interval of distraction mechanism can be flexibly adjusted, and the operation of subsequent operation is facilitated by maintaining the stability of vertebral body, wherein the detection lamp can display the situation of operation in real time, help medical staff to quickly locate, operate and correct, improve the efficiency of operation.

The present invention is a treatment instrument comprising: an inner fixation instrument that is inserted into a vertebral body from a pedicle; and an outer tube, wherein the treatment instrument is configured as follows. The inner fixation instrument has: a head part having a first connection part connectable to the outer tube; and a shaft extending from the head part to a proximal end, wherein the shaft is provided with a tapping screw thread which is tapped and screwed into a bone hole formed in the pedicle. The outer tube has a second connection part connectable to the first connection part of the inner fixation instrument, wherein a connection state between the second connection part and the first connection part is maintained with respect to rotation in a direction opposite to a direction in which the inner fixation instrument is screwed by the tapping screw thread. As a result, it is possible to provide a treatment instrument with which the inner fixation instrument embedded in the body during vertebroplasty can be easily removed even if it becomes necessary to remove the inner fixation instrument in the future. In addition, in vertebroplasty, it is possible to stabilize a procedure for filling bone cement into the vertebral body from the pedicle and inserting the inner fixation instrument thereinto.

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.

A therapeutic device is configured so as to be provided with a bone cement molding tool and a bone cement fixing tool, which are inserted into an internal fixation tool that supports bone cement filled in the vertebral body from the pedicle of the vertebral body and performs internal fixation. The internal fixture has a through-hole in the central axis direction from the head to the tip, and can be inserted into and removed from the bone cement along the central axis thereof. After the bone cement is screwed into the internal fixation tool, the bone cement is inserted into the internal fixation tool through the through hole to form a hole having a predetermined shape. The bone cement fixture has a distal end portion inserted into the formed hole, and the distal end portion is inserted into the hole through the through hole of the internal fixture, thereby suppressing rotation of the bone cement and / or movement in the extraction direction.

A bone anchoring device for anchoring and fixing vertebrae and for insertion into a pedicle canal is disclosed. A fork head having a U-shaped cut-out in a side view for a correction element, a connecting rod with two legs which terminate proximally and form a threaded section which engages with an adjusting means, wherein the legs have a radially outer circumferential area in which at least one retaining groove or other instrument attachment point is formed for gripping the fork head by a handling instrument, and a bone anchoring element with a proximal end facing away therefrom in the axial direction such that a distal direction and a proximal direction are also defined. The bone anchoring element has a spherical head at the proximal area, and the bone anchoring element is polyaxially pivotable with respect to the fork head, and has a pressure piece distally partially surrounds the bone anchoring element at the ball head, and proximally forms a seat for the connecting rod.

The utility model discloses a distraction type pedicle screw which comprises a root screw and a screw cap, the screw cap is fixedly connected to one end of the root screw, two supporting plates are rotatably connected to the root screw, an adjusting rod is connected to the bottom of the screw cap in a penetrating mode, and the end, extending into the root screw, of the adjusting rod is fixedly connected with a threaded pipe. The pedicle screw has the advantages that firstly, the pedicle screw is fixed on a vertebral arch, then the adjusting rod is rotated, due to the fact that the trapezoidal wedge block is matched with the adjusting rod through the threaded pipe in a threaded mode, the trapezoidal wedge block is supported between the two supporting plates in a limited mode, the pedicle screw is fixed on the pedicle screw, and the pedicle screw is fixed on the pedicle screw. The adjusting rod can drive the trapezoidal wedge block to push the supporting plate for opening, the root screw can be better fixed in the vertebral arch, then the arranged pressing seat can be rotationally fixed in the screw cap, the screw cap can be extruded and reinforced, meanwhile, the multiple screw caps can be conveniently connected in series and fixed, the structure is reasonable, and the firmness can be improved.

The utility model relates to a tool assembly for injecting bone cement, which is characterized in that an outer tube extends into a zygapophysis along the length direction of a vertebral pedicle, an inner tube with bone cement in a second channel extends into a first channel of the outer tube and extends to a part, needing to be injected with the bone cement, of the zygapophysis, a push rod extends into the second channel, and the push rod is pushed, so that the bone cement is injected into the zygapophysis. And the push rod pushes the bone cement in the second channel, so that the bone cement flows out along the liquid outlet hole. And under the action of the push rod, the bone cement flows out along the forming direction of the liquid outlet hole. One part of the bone cement permeates in the length direction perpendicular to the vertebral pedicle, and the other part of the bone cement permeates in the forming direction of the liquid outlet holes, so that the bone cement in the second channel permeates and disperses in the articular process in the forming direction of the liquid outlet holes; therefore, the bone cement from the vertebral body to the vertebral pedicle and finally to the articular process forms a three-in-one structure, so that the stability of the bone cement is enhanced.