84 results about "Vertebral arch" patented technology

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.

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.

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.

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 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.

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.

Pedicle-based intradiscal fixation devices, systems, instruments, and methods thereof. An implant for stabilizing an inferior vertebra and a superior vertebra may include a first member and a second member moveably connected to the first member. The implant may have a first, initial insertion orientation and a second, final implantation orientation different from the first, initial insertion orientation. The first member may be configured to be inserted through a pedicle of the inferior vertebra and the second member may be configured to engage bone of the superior vertebra in the second, final implantation orientation.

The application provides a design method and use method of a pedicle screw guide plate, and belongs to the field of medical instruments, and comprises the following steps: extracting the cross-sectional profile of a target vertebra based on image scanning to obtain the long-axis vertex position and end-axis vertex position of the target vertebra; establishing a two-dimensional coordinate system through the long axis and the short axis of the target vertebra, fitting a standard ellipse equation according to the long-axis vertex and the short-axis vertex of the target vertebra; designing a guide plate base according to the bone surface between the two focal points of the standard ellipse equation; and performing parameterized modeling on the guide hole at the focal point position to obtain a guide plate; the guide hole is used for mounting a pedicle screw, and the technical scheme of the application realizes a significant breakthrough in terms of surgical precision, safety, efficiency, cost control and the like through accurate positioning and personalized guide plate design by mathematical modeling.

The application discloses a kind of vertebral arch root fixator joint lamina clip isthmus crack repair device, belong to lumbar vertebra internal fixation instrument technical field, this vertebral arch root fixator joint lamina clip isthmus crack repair device, including the fixed mechanism of screw connection between vertebral body and vertebral arch root, one end of the fixed mechanism is equipped with connecting mechanism;One end of the fixed mechanism is equipped with locking mechanism, in combination state, the fixed mechanism and connecting mechanism are locked by locking mechanism, the other end of the connecting mechanism is fixedly connected with clamping mechanism.The fixed mechanism, clamping mechanism and connecting mechanism can be designed in the application, the vertebral arch screw can be quickly placed between vertebral body and vertebral arch root, the lamina clip is clamped with lamina, by connecting mechanism is mutually tensioned, and it is applicable to different positions of isthmus crack, can exert force according to the crack of vertebral body degree of closure, prevent secondary injury of lamina caused by excessive force.

The invention discloses a spine spinous process distraction device, comprising: a distraction member comprising a seat body, a pair of side arms respectively protruding from two opposite sides of the seat body to form a first interface end, a shaft hole penetrating through the seat body, at least a positioning groove concavely arranged on the seat body, and a release hole penetrating through the shaft hole in a radial direction; the retaining piece comprises a first plate body part and a second plate body part which are parallel, two sides of the first plate body part and the second plate body part are respectively connected through an elastic arm, a second interface end is formed between the two elastic arms, and shaft parts are respectively arranged on the first plate body part and the second plate body part in a protruding manner and are used for penetrating into two opposite ends of the shaft hole; at least one positioning part is convexly arranged on the first plate body part or the second plate body part; a conical section is formed at the front end of the tripping rod, and the conical section is inserted into the tripping hole. The vertebral arch support can be attached between spinous processes and at the bottom of two adjacent vertebral sections in a better fit mode, supporting force between the two spinous processes is provided, and the supporting strength between the spinous processes and a vertebral arch plate is effectively improved.

Described herein is a pedicle screw for use in the thoracolumbar spine where the height can be adjusted intra-operatively before or after installation member of the longitudinal member. The pedicle screws with adjustable height may be made with a monoaxial or polyaxial configuration. The height of the pedicle screw can be lengthened or shortened.

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).

The embodiment of the invention provides a centrum rotation angle calculation method, device and system, a storage medium and a product, and relates to the technical field of image processing. The method comprises the following steps: responding to three-dimensional image data of a target object, obtaining vertebral pedicle information and an end plate plane of each vertebral body in the target object, obtaining a horizontal axis vector of each vertebral body on a cross section based on the vertebral pedicle information, correcting the horizontal axis vector based on the end plate plane, obtaining a target horizontal axis vector, and correcting the target horizontal axis vector based on the target horizontal axis vector. And calculating the rotation angle of each cone around the vertical axis of the target object. According to the embodiment of the invention, the transverse axis vector is obtained by analyzing the three-dimensional image data, and the transverse axis vector is corrected based on the end plate information, so that the interference of end plate related factors on rotation angle calculation is eliminated, and the calculation precision of the cone rotation angle is effectively improved.

The invention relates to a pedicle screw capable of being opened and adjustable in height, which comprises a screw body and is characterized in that an opening height adjusting mechanism is further arranged on the screw body, and a cavity for accommodating the opening height adjusting mechanism is formed in a polished rod part of the screw body. The distraction height adjusting mechanism comprises an upper distraction seat, a lower distraction seat, a spiral push rod and a sliding block, the sliding block and the spiral push rod are both of a hollow structure and are coaxial with the screw body, the sliding block is arranged in a cavity of the polished rod part, the head of the spiral push rod is fixedly connected with the sliding block, and the lower end of the spiral push rod is fixedly connected with the screw body. The tail portion of the spiral push rod is located in an inner channel of the cortical bone combination portion, and the upper distraction base and the lower distraction base are symmetrically arranged on the two sides of the polished rod portion and are in sliding fit with the sliding block. The mechanical structure has high expanding capacity on a collapsed vertebral body, the maintainable height is stable after expanding, the expanding size is large, and the anchoring stability in the loose bone is better; and a thoracolumbar posterior nail rod system is used for fixing.

The application discloses a vertebral fixation device, which comprises a plurality of pedicle screws and a connecting rod connected with the pedicle screws. The connecting rod comprises a heating rod, a plurality of memory plastic wires capable of being deformed by heat and a plurality of support tubes arranged in sequence. Each memory plastic wire is spirally wound on the heating rod to form a core rod in cooperation with each other, the support tubes are sleeved outside the core rod, and the memory plastic wires are connected with the support tubes. The vertebral fixation device further comprises an electric heating mechanism for heating the heating rod, the temperature of the memory plastic wires changes, and the memory plastic wires are transformed between a first state and a second state. In the first state, the support tubes abut against each other. In the process of transforming to the second state, the distance between the support tubes gradually increases. The vertebral fixation device of the application solves the defect that the rigidity of a traditional connecting rod is not adjustable by optimizing the connecting rod from a solid alloy rod to a combination of the heating rod, the memory plastic wires and the support tubes.

Described herein is a pedicle screw for use in the thoracolumbar spine where the height can be adjusted intra-operatively before or after installation member of the longitudinal member. The pedicle screws with adjustable height may be made with a monoaxial or polyaxial configuration. The height of the pedicle screw can be lengthened or shortened.

The present application relates to the technical field of spinal surgical medical instruments, in particular to a lumbar spondylolisthesis orthosis. The orthosis comprises a sleeve for connecting pedicle screws, an axially slidable collet is arranged in the inner cavity of the sleeve, the collet comprises two symmetrically arranged arc-shaped clamping pieces and a disc piece fixedly connected to the upper end of the arc-shaped clamping pieces, a positioning pin is arranged on the inner side wall of the arc-shaped clamping piece, a threaded plug is arranged below the disc piece, the threaded plug is connected to the lower end of a transmission rod, the upper end of the transmission rod passes through the center of the disc piece and is connected to a driving mechanism, spring pieces for pushing the collet to move are arranged on the side wall of the sleeve. The orthosis can accurately correct and position the lumbar vertebrae, improve the standardization and accuracy of the correction and positioning action of the lumbar vertebrae, in addition, a pair of single-shaft pedicle screws arranged at an angle can improve the holding force on the slipped vertebral body, so that it is not easy to slip out during the orthopedic surgery, and the success rate of the surgery is improved.