76 results about "Pedicle screw" patented technology

The invention provides a spinal pedicle screw implantation system based on a multi-modal image and MR navigation, and relates to the technical field of screw implantation, the system comprises a preoperative image processing module used for identifying bony characteristics of a patient and delimiting a screw implantation safety boundary according to the bony characteristics; and the bone image fusion navigation module is used for analyzing to obtain anatomical data of the patient, and calculating a screw implantation path according to a crown porcupine optimization algorithm in combination with bony characteristics. And the body position correction module is used for calculating the body position deviation value and synchronously adjusting the screw implantation path according to the body position deviation value and the screw implantation safety boundary. And the path risk early warning module is used for calculating the distance between the surgical tool and the key tissue in real time, and performing collision risk assessment and early warning. And the postoperative evaluation module is used for quantitatively evaluating the screw implantation precision and generating a postoperative report. According to the method, more accurate positioning can be provided for screw implantation, the accuracy of a screw implantation path is ensured, early warning is performed through extraction, a doctor is reminded to take measures in time, and operation safety is ensured.

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.

Devices, systems, and methods for a robot-assisted surgery. A surgical robotic system with integrated navigation and multiple surgical arms may assist a user with one or more surgical procedures. In addition to the multiple surgical arms, the robotic system may also have peripheral arms to position a navigation camera and surgeon displays. The robotic system is collaborative to allow for easy integration into procedural workflows, for example, to install pedicle screws, interbody implants, or other surgical devices.

This invention relates to a novel P-approach endoscopic lumbar fusion surgery method, belonging to the field of lumbar fusion surgery technology. This method addresses the high risk of nerve injury and insufficient operational precision in existing endoscopic fusion techniques by proposing an improved solution. It utilizes Kirschner wires for positioning at the inferior articular process to establish a precise entry point avoiding the nerve root pathway; a visually guided circular saw is used throughout the endoscopic procedure to construct a safe triangular working channel directly reaching the spinal canal; under full endoscopic monitoring, a unilateral approach is used for bilateral spinal canal decompression, thoroughly removing diseased tissue and scraping the endplates until punctate bleeding occurs; a bone graft cannula with a curved tip is used to precisely implant the fusion device into the anterior region of the intervertebral space, restoring intervertebral height through a self-locking structure; finally, a universal pedicle screw is percutaneously implanted for fixation. This method reduces the risk of nerve injury, improves surgical safety and efficiency, and is suitable for patients with lumbar spondylolisthesis complicated by spinal stenosis.

A system for robotic spinal manipulation includes a robotic tool including one or more screw connectors. Each screw connector is configured to connect to a pedicle screw and to move with one or more degrees of freedom. The robotic tool also includes a controller configured to control a position of each of the one or more screw connectors and a connector configured to mate with a robotic arm.

The utility model provides a split type kirschner wire and a kit for an orthopedic surgery robot, and belongs to the technical field of kirschner wires, the split type kirschner wire comprises a front kirschner wire body used for puncturing bones and a rear kirschner wire body used for being connected with an end effector of the orthopedic surgery robot, the front kirschner wire body is detachably connected with the rear kirschner wire body. Compared with Kirschner wire bending operation in the prior art, after the split type Kirschner wire is driven into the human body, the front Kirschner wire body with the proper length can be obtained more conveniently and safely, the problem of positioning displacement or loss caused by excessive pulling of the Kirschner wire is solved, and the Kirschner wire is more convenient to use. After the front kirschner wire body is detached and separated, due to the fact that the connecting end of the front kirschner wire body is smooth and clean, follow-up balloon dilatation kyphoplasty or pedicle screw implanting operation is facilitated, operation risks are reduced, and related operation operations can be carried out more safely, more reliably and more conveniently.

Some embodiments relate to a pedicle screw implant construct kit, comprising: at least one pedicle screw including a head; an embracing structure shaped and sized for embracing at least a portion of the screw head; an upper fastener for mounting onto the embracing structure, the upper fastener having a polygonal profile at least on a face of the upper fastener facing a direction opposite the screw.

A polyaxial pedicle screw arrangement that can be temporarily locked in place a polyaxial pedicle screw arrangement in position during a surgical procedure.

Implants, systems, and methods for securing a flexible band, thereby providing a desired correction to the spine. The implant may secure the flexible band to a spinal rod and / or a pedicle screw. The implant has a locking mechanism to secure the band. The band may be looped around bony anatomy and tensioned to achieve correction and provide fixation as an alternative or supplement to pedicle screws and spinal rods during spinal deformity surgery. Tensioners may be used that allow for multiple positions for attachment between the tensioner and a band clamp inserter.

An orthopedic fixation device for affixing the screw head of a polyaxial pedicle screw has a tulip, a saddle, and a ring. The tulip has an interior cavity and two opposed threaded arms and a lower ledge. The saddle is inserted into the tulip body, and has a U shaped groove for receiving a spinal fixation rod. The ring has a diameter that is smaller than the widest diameter of the screw head, and is formable into a diameter larger than the widest diameter of the screw head when the screw head is pushed into the ring. The ring has a connection portion that mates with a connection portion of the saddle. The screw head is clamped within the tulip body between the saddle and the ring when a cap is threaded between the tulip arms.

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.

A polyaxial pedicle screw arrangement that can be temporarily locked in place a polyaxial pedicle screw arrangement in position during a surgical procedure.

The application discloses a pedicle screw system, which comprises a screw expansion sleeve, a screw body, a fixing base, a fastening nut, a fixing rod, a guide cylinder and a bone cement injection device; the screw expansion sleeve is provided with a connecting sheet with a gradient structure and expansion wings with through grooves, can reversely engage with a bone hole, and has good anti-loosening effect. The guide cylinder can realize component positioning and assembly guiding, and can also cooperate with the bone cement injection device to complete preoperative bone cement pre-injection strengthening before the screw body and the fixing base are assembled. The fixing base is provided with a guide plate and a limiting type fixing rod, and assembly positioning is convenient. The pedicle screw system has high fixing strength, is suitable for osteoporosis patients, does not need secondary surgery, is simple in assembly, and has strong clinical practicability.

Implants, systems, and methods for securing a flexible band, thereby providing a desired correction to the spine. The implant may secure the flexible band to patient anatomy without the use of pedicle screws or spinal rods. The implant may include a locking member configured to secure the band. The band may be looped around bony anatomy and tensioned to achieve correction and provide fixation as an alternative to pedicle screws and spinal rods during spinal deformity surgery.

The invention discloses an implantable medical device for treating spinal disorders, comprising a superelastic corrective rod that can be attached to a set of pedicle spine screws, characterised in that the corrective rod defines a continuous longitudinal axis along which a set of aligned sections are arranged. The set of sections alternately comprises a contact section and a recessed section, which can be twisted. The set of screws comprises at least one locking screw comprising a closure on the head that can be configured to move between a locked position and a sliding position.

The invention discloses an internal fixation device for total laminectomy, which belongs to the technical field of medical instruments for orthopedics department and comprises two bases, the two bases are an upper base and a lower base, the top end of the lower base is connected with the bottom end of the upper base through an elastic body, so that the upper base can deflect relative to the lower base, and the elastic body is arranged on the upper base; the axial distance between the upper base and the lower base can be changed; an upper spinous process connecting part is arranged at the top end of the upper base, a first fastening piece is arranged on the upper spinous process connecting part, and the first fastening piece extends in the left side direction and the right side direction of the upper base and is connected with the upper spinous process connecting part; by the adoption of the structure, vertebrae subjected to a total laminectomy and adjacent upper and lower vertebrae can be effectively connected, the stability of the spine is guaranteed while the activity degree of the spine is guaranteed, the vertebral plate connecting device adapts to the physiological structure of the vertebrae after the operation, and the vertebral plate connecting device has the advantages that the vertebral plate connecting device is simple in structure, convenient to use and high in practicability. And the damage to the surrounding physiological structure is small.

The invention relates to the field of lumbar vertebra internal fixing mechanisms, and discloses a lumbar spondylolysis internal fixing device which comprises a pedicle screw, a vertebral plate hook and a connecting rod, a top block is arranged on the top of the pedicle screw in a universal rotating mode, the vertebral plate hook is mainly composed of a hook body and a tail block, the tail block is arranged on the top of the hook body in a rotating mode, and the connecting rod is connected with the top block and the tail block. The device is reasonable in structure and easy to operate, linear step-by-step pressurization on the isthmus is facilitated, and effectiveness of internal fixation is guaranteed.

A minimally invasive surgical device comprising: a screw element; the positioning element is provided with a limiting part for accommodating the screw element and an expanding part coupled to the limiting part; the flexible extension wing is provided with two opposite first sections which are respectively coupled to the opposite positions of the positioning element, and the extension directions of the two first sections are parallel to the length direction of the positioning element; thus, the minimally invasive surgical device of the present disclosure can be used to perform the installation of the pedicle screw while minimizing the wound area on the surgical site, and to reduce the space occupied by the surgical path from the skin to the subcutaneous tissue.

An automatic screw implantation system includes a screw implantation device. The screw implantation device includes a power transmission assembly, a guide pin, and a motor. The power transmission assembly is used to be connected to a hollow pedicle screw. The guide pin passes through and is arranged coaxially with the hollow pedicle screw. The motor is dynamically coupled to the power transmission assembly and the guide pin. The motor is configured for driving the guide pin to advance and simultaneously spin at a first rotational speed and a first torque. The motor is configured for driving the power transmission assembly to control the hollow pedicle screw to spin at a second rotational speed and a second torque. The second rotational speed is smaller than the first rotational speed, and the second torque is greater than the first torque.

A real-time simulation-based rod insertion navigation system includes a camera, a plurality of pedicle screws inserted into pedicles, a first marker attached to an upper portion of each of the plurality of pedicle screws, a rod insertion device equipped with a rod inserted into a side of heads of the plurality of pedicle screws, a second marker attached to the rod insertion device, and a control unit configured to, when the rod is inserted into the heads of the pedicle screws, determine a position and angle change of the pedicle screws and the rod insertion device equipped with the rod using an image captured by the camera of the first marker and the second marker, and display a real-time simulation image by synthesizing an image reflecting the position and angle changes of the pedicle screws and the rod insertion device equipped with the rod.

The utility model discloses a minimally invasive pedicle screw connecting rod taking-out instrument, and relates to the field of medical instruments, and the minimally invasive pedicle screw connecting rod taking-out instrument comprises a handheld part, a sleeve, an ejector rod, an ejecting piece and an elastic piece; in the working process, the screw connecting rod is sleeved with the lantern ring, the ejector rod is rotated, the ejector rod overcomes the elastic force of the elastic piece to eject the jacking piece outwards to the lower end of the sleeve, and the jacking piece abuts against the screw connecting rod arranged in the lantern ring in a sleeved mode so that stable connection between the jacking piece and the screw connecting rod can be achieved; only one small sleeve is needed for operation at the wound position, an operative incision does not need to be enlarged, stable connection with the screw connecting rod can be guaranteed in a threaded abutting mode, and the screw connecting rod is prevented from falling off in the taking-out process.

The application discloses a tool gauge and detection method for a spinal pedicle screw, and belongs to the technical field of medical devices. The tool gauge for the spinal pedicle screw comprises an inner ball diameter measuring gauge, which is used for detecting the diameter of an inner ball surface of a pedicle screw seat matched with a gasket or a ball screw. The inner ball diameter measuring gauge comprises a middle shaft rod, a lower large circular plate is fixedly arranged at the front end of the middle shaft rod, an upper small circular plate parallel to the lower large circular plate is sleeved on the middle shaft rod above the lower large circular plate, an elastic member is arranged between the lower large circular plate and the upper small circular plate to keep the two plates in an open state, the diameter of the lower large circular plate is larger than that of the upper small circular plate, and the diameters of the lower large circular plate and the upper small circular plate are both between the maximum cross-sectional circular diameter of the inner ball surface and the minimum cross-sectional circular diameter of the inner ball surface. The tool gauge and detection method for the spinal pedicle screw have low detection cost, high efficiency and high detection accuracy.

Implants, systems, and methods for securing a flexible band, thereby providing a desired correction to the spine. The implant may secure the flexible band to patient anatomy without the use of pedicle screws or spinal rods. The implant may include a locking member configured to secure the band. The band may be looped around bony anatomy and tensioned to achieve correction and provide fixation as an alternative to pedicle screws and spinal rods during spinal deformity surgery.

Spinal surgical procedures can benefit from a rod reduction instrument with a ratchet lock-out mechanism. The instrument can include an inner shaft, an outer housing and a ratchet mechanism. The inner shaft can include a threaded proximal portion and a distal end that includes a plurality of engagement members adapted to receive a pedicle screw. The outer housing can be slidably received over the inner shaft, and include a top sleeve and a bottom sleeve. The top sleeve can include the ratchet mechanism to selectively engage the threaded proximal portion of the inner shaft and the bottom sleeve can engage a connecting rod. The ratchet mechanism can include an engagement feature to selectively engage the threaded proximal portion of the inner shaft, and a locking mechanism to selectively lock the engagement feature of the ratchet mechanism against the threaded proximal portion of the inner shaft.

The application discloses a bone marrow cavity liquid suction tube and a pedicle screw kit. The bone marrow cavity liquid suction tube comprises a tube body, a liquid suction head arranged at one end of the tube body, a liquid suction port and a liquid outlet port arranged on the liquid suction head, a channel arranged in the liquid suction head and communicating with the liquid suction port and the liquid outlet port, the liquid outlet port being in communication with an inner chamber of the tube body, the tube body and the outer wall of the liquid suction head being sealed from each other, and a liquid outlet hole being arranged on the side wall of the tube body. The bone marrow cavity liquid suction tube further comprises a driving part configured to drive the liquid suction head to switch between a first position and a second position. When the liquid suction head is located at the first position, the channel is open. When the liquid suction head is located at the second position, the channel is closed. According to the bone marrow cavity liquid suction tube, when the liquid suction tube is used to suck liquid, the liquid suction head is driven to the first position, and the channel between the liquid suction port and the liquid outlet port is open at this time. When it is required to release the blood in the tube body, the liquid suction head is driven to the second position, the channel between the liquid suction port and the liquid outlet port is closed, and the blood can only flow out of the liquid outlet hole. Therefore, the blood in the bone marrow cavity does not need to be sucked for multiple times, and the bone marrow cavity liquid suction tube is convenient to use.

The present application relates to the field of medical devices, and relates to a buckle type low-cut pedicle screw, which comprises a lock cap, a connecting rod, a check ring, a screw rod and a base, the base is connected to the screw rod in a universal manner, an inner socket one is arranged in the base, the check ring is clamped in the base and located on the upper end of the screw rod, an inner socket two coaxial with the socket one is arranged in the check ring, an annular clamping groove is arranged on the outer side of the base below the socket one, the lock cap is arranged on the outer side of the base, an insertion block clamped in the annular clamping groove is arranged on the lower end of the lock cap, an insertion hole three is arranged on the side end of the lock cap, the insertion hole three is in communication with the insertion hole two, the connecting rod is arranged through the insertion hole one, the insertion hole two and the insertion hole three and located on the upper end of the screw rod, the lock cap and the base are locked in one step in a buckle form to lock the connecting rod, the traditional thread screw plug and the nail cap are prevented from being wrong in thread and cutting thread, and the clinical problems are avoided, the locking efficiency is high, and the operation time is reduced.

Disclosed is a spinal alignment system that includes a receiver having first and second pair of legs coupled to each other by way of a plurality of hinged connections that enables the first and second pair of legs to exhibit one of, a neutral position or a contracted position. One or more tabs disposed onto an inner surface of each leg of the first and second pair of legs, a retaining means that is adapted to couple at least one leg of the first pair of legs with at least one leg of the second pair of legs to retain the first and second pair of legs in the neutral position, and a pedicle screw such that a head portion of the pedicle screw is inserted and held in a first opening of the receiver. A rod adapted to be inserted inside the second opening.

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 application discloses a percutaneous minimally invasive porous pedicle screw, which comprises a screw tip, a screw body and a screw seat; the screw is integrally formed by using an additive manufacturing technology; the screw body comprises a threaded segment, the thread teeth of the threaded segment are formed by a dense solid metal, and the screw groove bottoms and the screw rod main body region between the thread teeth are formed by a three-dimensionally communicated porous structure; the screw is provided with a through minimally invasive hole along an axis; a bone cement hole which is in communication with the outside is arranged on the side wall of the minimally invasive hole; the edge of the bone cement hole is provided with a solid wall with a thickness of 0.2-0.4 mm; the minimally invasive hole is arranged on the screw axis, and the bone cement hole which is in communication with the outside is arranged on the side wall of the minimally invasive hole, so that the problems, such as jamming, deviation from the track and generation of metal debris due to the rough edges of the porous structure, and outflow and solidification of bone cement at the specified position, can be effectively avoided; and the design that the thread teeth are in a solid structure and the screw rod main body between the thread teeth is a three-dimensionally communicated porous structure guarantees the mechanical strength and instant holding force of the screw.

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).