27 results about "Intervertebral disc space" patented technology

Minimally-invasive spinal surgery methods, devices, and systems for advancing a spinal implant through an oblique anterolateral retroperitoneal operative corridor to an intervertebral disc space located between the L5 and S1 vertebral bodies of a subject positioned in a lateral decubitus position are described. An example spinal implant system includes a retractor sized and shaped to establish at least a portion of the oblique anterolateral retroperitoneal operative corridor, a spinal implant sized and shaped to pass between the first and second unitary retractor blades of the retractor in connection with the spinal implant being introduced into the intervertebral disc space via the oblique anterolateral retroperitoneal operative corridor, and an introducer instrument configured to pass between the first and second unitary retractor blades of the retractor in connection with the introducer instrument introducing the spinal implant into the intervertebral disc space via the oblique anterolateral retroperitoneal operative corridor.

The present invention provides an expandable fusion device capable of being installed inside an intervertebral disc space to maintain normal disc spacing and restore spinal stability, thereby facilitating an intervertebral fusion. The fusion device described herein is capable of being installed inside an intervertebral disc space at a minimum to no distraction height and for a fusion device capable of maintaining a normal distance between adjacent vertebral bodies when implanted.

Biomaterials, implants, methods of making the biomaterial and implants, methods of providing pain relief by administering the biomaterial or implant to a patient, and kits that include such biomaterials, implants, or components thereof. The biomaterials may include microparticles including one or more active pharmaceutical agents, such as anesthetics, antibiotics, and corticosteroids, which help to provide pain relief over an extended period of time. The biomaterials may be applied directly to the intervertebral disc or in the disc space to provide direct therapy for the management of disc pain.

A cervical disc instrument that includes a handle that defines a cavity therein, a trial head, and a blade. The trial head is removably coupled to the handle and configured for insertion into a disc space. The blade is disposed in the cavity of the handle and configured to cut a surface that at least partially defines the disc space when the trial head is located in the disc space.

Expandable fusion devices, systems, instruments, and methods thereof. The expandable fusion device is capable of being installed inside an intervertebral disc space to maintain normal disc spacing and restore spinal stability, thereby facilitating an intervertebral fusion. The fusion device may include a body, a first endplate, and a second endplate. A drive screw may be rotated to move the first and second endplates outwardly and into an expanded configuration. Instruments may be provided to ensure the implant is inserted safely and as intended.

One embodiment of the present invention is an interbody fixation device to be inserted into an intervertebral space between an upper vertebral body and a lower vertebral body. The interbody fixation device includes a plurality of independent elastic members each having a pair of upper and lower contact surfaces configured to be in contact with the endplates of the upper and lower vertebral bodies. Each of the plurality of elastic members has elasticity between the pair of upper and lower contact surfaces. When the vertebral endplates above and below an intervertebral disc space in which the interbody fixation device is implanted are partially fractured (damaged), an elastic member in contact with the fractured part sinks, while propagation of sinking to the other elastic members is suppressed, thereby ensuring stable retention. This makes it possible to provide an interbody fixation device that can be stably retained after implantation, even in cases in which vertebral body bones constituting the intervertebral disc space are fragile due to osteoporosis or the like.

A discectomy device for clearing material out of a disc space of a patient having a body, a first rotatable member at the distal portion of the body, and a second rotatable member at the distal portion of the body spaced from the first rotatable member. A transverse axis passes through the first and second rotatable members. A first mechanism is actuable to rotate the first and second rotatable members about the transverse axis. A mechanism can be provided to expand the rotatable members to increase the distance between the rotatable members. The rotatable members in some versions can be detached from the device for placement within the disc space.

An apparatus for use in preparing the intervertebral disc space. The apparatus includes a powered disc cutter that can be inserted through a tube and into the disc space. Once inside the disc space, the cutter can be rotated on its axis and articulated through the disc space to break up and disconnect the disc tissue from the surrounding disc tissue and disc annulus. The device is powered by a handheld driver that utilizes a motor to impart motion, such as rotary motion, to an elongated shaft assembly having a cutting tool or assembly pivotably attached to the distal end thereof. The cutting tool is mounted to the end of the drive shaft assembly by a linkage so that the shaft may be inserted in a straight configuration down a narrow access port. The cutting assembly can spin on its axis while being articulated providing access to the intervertebral space.

The present invention provides an expandable fusion device capable of being installed inside an intervertebral disc space to maintain normal disc spacing and restore spinal stability, thereby facilitating an intervertebral fusion. In one embodiment, the fusion device includes a central ramp, a first endplate, and a second endplate, the central ramp capable of being moved in a first direction to move the first and second endplates outwardly and into an expanded configuration. The fusion device is capable of being deployed down an endoscopic tube.

The invention discloses a minimally invasive ultrasonic guided percutaneous rabbit intervertebral disc degeneration modeling mode, and relates to the technical field of ultrasonic modeling, and the method comprises the following steps: fixing an experimental rabbit on an operation table in a prostrate manner in an anesthetic state, and raising the abdomen to maintain lumbar lordosis; an ultrasonic probe is used for scanning along the longitudinal axis of the spine, and the L5 transverse process is recognized upwards from the highest point of the crista iliaca; positioning an L5 / 6 intervertebral disc gap in the cross section ultrasonic image by taking the identified L5 transverse process as an anatomical reference; a stable high-echo target spot formed by fascia is confirmed in the intersection area of the L5 transverse process head side and the superior articular process ventral side; marking a puncture needle insertion position on the skin surface according to the high-echo target spot; percutaneous puncture is conducted under ultrasonic real-time guidance along the marked position, the needle tip slides into the L5 / 6 intervertebral disc along the superior zygopophysis bone surface, and it is confirmed that the needle tip is located in the nucleus pulposus through viscous resistance and the unlocking hand feeling; the needle tip is controlled to stay in the intervertebral disc for 10 seconds, the puncture depth is kept at 5 mm, and mechanical disturbance is completed to induce the intervertebral disc to retreat.

A lateral retractor system for forming a pathway to a patient's intervertebral disc space includes a single dilator and a retractable dual-tapered-blade assembly. The dilator may feature a narrow rectangular body for insertion at an insertion orientation parallel to the fibers of the patient's psoas muscle, at an approximate 45-degree angle to the patient's spine. The retractable dual-tapered-blade assembly consists of only two blade subassemblies, each having a blade bordered by adjustable wings, along with built-in lighting and video capabilities. The dual-tapered-blade assembly may be passed over the single dilator at the insertion orientation and rotated approximately 45-50 degrees to a final rotated orientation parallel to the intervertebral disc space before the two blade subassemblies are retracted away from one another to create the surgical pathway, while simultaneously and continuously assessing for encroachment upon one or more nerve structures within 360-degrees of the instrument. Other embodiments are also disclosed.

A method for performing lumbar interbody fusion surgery may include forming an access corridor through a facet joint of a patient, removing disc material from a disc space of the patient via one or more instruments advanced through the access corridor, and advancing an interbody device through the access corridor and into the disc space.

A lateral retractor system for forming a pathway to a patient's intervertebral disc space includes a single dilator and a retractable dual-tapered-blade assembly. The dilator may feature a narrow rectangular body for insertion at an insertion orientation parallel to the fibers of the patient's psoas muscle, at an approximate 45-degree angle to the patient's spine. The retractable dual-tapered-blade assembly consists of only two blade subassemblies, each having a blade bordered by adjustable wings, along with built-in lighting and video capabilities.The dual-tapered-blade assembly may be passed over the single dilator at the insertion orientation and rotated approximately 45-50 degrees to a final rotated orientation parallel to the intervertebral disc space before the two blade subassemblies are retracted away from one another to create the surgical pathway, while simultaneously and continuously assessing for encroachment upon one or more nerve structures within 360-degrees of the instrument. Other embodiments are also disclosed.

The utility model discloses a device for rotating an orthopedic track in scoliosis deformity surgery, which comprises two forceps arms hinged with each other, the two ends of each forceps arm are respectively a clamping end and a holding end, and the hinge point between the two forceps arms is positioned between the clamping end and the holding end of each forceps arm. The clamping end of each clamp arm is provided with two clamping arms capable of moving close to or away from each other. The utility model aims to provide the device for rotating the orthopedic track in the scoliosis deformity operation, and the device can enable two adjacent vertebral bodies with overlarge intervertebral space to move close to each other, so that the space between the two vertebral bodies is reduced to meet the requirement.

Expandable fusion devices, systems, and methods. The expandable fusion device includes one or more integrated deployable retention spikes configured to resist expulsion of the device when installed in the intervertebral disc space. The implant may include upper and lower main endplates, an actuator assembly configured to cause an expansion in height of the upper and lower main endplates, and a sidecar assembly including a sidecar carrier, an upper carrier endplate pivotably coupled to an upper spike, and a lower carrier endplate pivotably coupled to a lower spike such that forward translation of the sidecar carrier pushes against the upper and lower carrier endplates, thereby deploying the upper and lower spikes.

An additive-manufacturing system for printing spinal implants in-situ, within a patient, is disclosed. The system may include a robotic subsystem having scanning and imaging equipment and an armature including at least one dispensing nozzle and a controller apparatus having a processor and a non-transitory computer-readable medium. The controller may control the scanning and imaging equipment to determine a target alignment of a patients spine, develop an in-situ-printing plan including an in-situ material selection plan based on the target alignment of the patients spine, an interbody access space, and a disc space between adjacent vertebra of the patients spine, and execute the in-situ-printing plan. The controller may further control the armature to dispense at least one material chosen from a rigid material and a pliable material to form at least one motion-sparing implant.

The present technology includes patient-specific spinal fusion devices, which may include an interbody implant that is designed to be positioned within a disc space between two vertebral bodies and one or more fixation elements that can anchor the interbody implant to the vertebral bodies. The fusion devices include one or more retention mechanisms for retaining the fixation elements within corresponding lumens or bore holes extending through the interbody implant. Methods for designing and manufacturing patient-specific spinal fusion devices are also described herein.

The present invention provides an expandable fusion device capable of being installed inside an intervertebral disc space to maintain normal disc spacing and restore spinal stability, thereby facilitating an intervertebral fusion. In one embodiment, the fusion device includes a body portion, a first endplate, and a second endplate, the first and second endplates capable of being moved in a direction away from the body portion into an expanded configuration or capable of being moved towards the body portion into an unexpanded configuration. The fusion device is capable of being deployed and installed in both configurations.

The present invention provides an expandable fusion device capable of being installed inside an intervertebral disc space to maintain normal disc spacing and restore spinal stability, thereby facilitating an intervertebral fusion. In one embodiment, the fusion device includes a body portion, a first endplate, and a second endplate, the first and second endplates capable of being moved in a direction away from the body portion into an expanded configuration or capable of being moved towards the body portion into an unexpanded configuration. The fusion device is capable of being deployed and installed in both configurations.

To provide an intervertebral fusion device with a suitable bone graft lumbar vertebra.SOLUTION: Intervertebral fusion devices and their methods of use are described herein. Also described herein are interbody device systems and methods of use thereof. In some embodiments, the disc space often needs to be distracted to restore the space between the vertebrae, both to increase the height of the intervertebral foramen and to create lordosis. The system can deliver sufficient force through the minimally invasive access port to enlarge the space for any connective tissue that may continue to connect the vertebrae. In addition, the bone distraction method minimizes point loading and prevents endplate fracture through better contact surface area.SELECTED DRAWING: Figure 9

Systems and methods for performing spine surgery. A retractor may be positioned within a patient to facilitate maintaining a volume of fluid at the surgical site. The retractor includes an opening capable of receiving one or more surgical instruments, for example, a cutting instrument and an endoscope. A cutting member of the cutting instrument is submerged and operated within the volume of fluid to resect tissue, for example, within the intervertebral disc space. The volume of fluid is maintained at the surgical site improves cooling of the surgical site and visualization of the surgical site via the endoscope during resection. The volume of fluid is maintained at the surgical site via the surgical system. The surgical system may include a sensor for measuring the level of fluid in the retractor, an inflow source and an outflow source in fluid communication with the retractor, and a controller controlling the surgical system.

The present technology includes patient-specific intervertebral fusion devices, which can include an interbody implant designed to be positioned in a disc space between two vertebral bodies and one or more fixation elements capable of securing the interbody implant to the vertebral bodies. The intervertebral fusion device includes one or more retention mechanisms for retaining the fixation elements within corresponding internal cavities or bore holes extending through the interbody implant. Methods for designing and manufacturing patient-specific intervertebral fusion devices are also described herein.

Expandable interbody fusion implants, systems, and methods for coronal correction are provided.SOLUTION: The implant may include top and bottom end plates configured to engage adjacent vertebrae, a dual actuator assembly including a rotatable drive screw actuator and a rotatable actuator nut concentric with the drive screw actuator, and a driving ramp disposed along a shaft of the drive screw actuator and engaged with the top and bottom end plates via complementary ramp surfaces. When inserted into the intervertebral disc space, the implant has an ipsilateral side and a contralateral side, and rotation of the drive screw actuator and / or the actuator nut causes movement of one or more of the driving ramps, thereby causing independent expansion of the height of the contralateral side and / or the ipsilateral side of the implant to correct the coronal plane deformity.SELECTED DRAWING: Figure 3

A cervical disc instrument that includes a handle that defines a cavity therein, a trial head, and a blade. The trial head is removably coupled to the handle and configured for insertion into a disc space. The blade is disposed in the cavity of the handle and configured to cut a surface that at least partially defines the disc space when the trial head is located in the disc space.

Spinal surgery for implanting an intervertebral device and associated devices and systems are described herein. Representative spinal surgery may include obtaining access to a diseased disc of a patient's spine via a minimally invasive lateral, transpedicular, transarticular, or transforaminal access pathway. Various instruments may be inserted through the trocar to (i) remove some or all of the diseased disc, (ii) expand the intervertebral disc space around the diseased disc, (iii) insert an intervertebral device into the intervertebral disc space, and / or (iv) fill the intervertebral device with a filling material. Each of the above steps may be performed through a minimally invasive access path provided by a trocar. This may minimize destruction of the patient's muscles, thereby minimizing patient pain and recovery time.

A method of performing percutaneous interbody spinal fusion on adjacent vertebrae in a patient including the steps of: creating a percutaneous access opening on the patient, using indirect visualization to establish a surgical path through the access opening, creating a cavity in a disc space between the adjacent vertebra, without retraction, inserting an expandable implant into the cavity, the implant configured to fit through the access opening into the cavity, and expanding the implant within the cavity.

A method for treating a spine includes the steps of: creating a surgical pathway in a body along a first surgical approach to a surgical site including vertebral tissue; creating a surgical pathway in the body along a second surgical approach to the surgical site including the vertebral tissue; disposing a fulcrum with an intervertebral disc space of the vertebral tissue via the first surgical approach; and manipulating the vertebral tissue via the second surgical approach. Spinal implants, surgical instruments and systems are disclosed.