18 results about "Spinal Disk Implant" patented technology

Disclosed methods, devices, and systems are suitable for performing minimally-invasive procedures for accessing the intervertebral space along an oblique pathway with an insertion instrument that holds a disc implant, and reorienting the angular relationship between instrument and implant while the implant is inside the body (for example at or within the disc space).

An intervertebral implant may include a shaft having a proximal end, a distal end, a longitudinal axis, a minor diameter, and a helical thread disposed about the shaft along the longitudinal axis between the proximal end and the distal end of the shaft. The helical thread may include a major diameter and a concave undercut surface angled towards one of the proximal end and the distal end of the shaft. The intervertebral implant may be implanted within an intervertebral space between a superior vertebral body and an inferior vertebral body. A ratio of the major diameter to the minor diameter may be less than 1.50. The concave undercut surface may engage the superior vertebral body and the inferior vertebral body and may be shaped to resist at least one force transmitted between the superior vertebral body and the inferior vertebral body to stabilize the intervertebral space.

Disclosed methods, devices, and systems are suitable for performing minimally-invasive procedures for accessing the intervertebral space along an oblique pathway with an insertion instrument that holds a disc implant, and reorienting the angular relationship between instrument and implant while the implant is inside the body (for example at or within the disc space).

An interbody implant can comprise a cage and a porous structure. The cage can comprise an anterior segment, a medial segment, a posterior segment and a lateral segment contiguously connected to each other to define an interior space. The porous structure can be located in the interior space and can be bounded by the cage. The porous structure can comprise opposed superior and inferior surfaces exposed through the cage, an internal cavity located in an interior of the porous structure, and a plurality of ports connecting the internal cavity to the superior and inferior surfaces. A superior-inferior stiffness of the interbody implant can be defined by the porous structure. The porous structure can be compressed within a patient by movement of the spine to biologically stimulate bone growth in vertebrae adjacent the interbody implant. The implant can be configured for lateral, anterior and posterior insertion at different spine levels.

The invention involves a retraction distraction blade system suitable for use with retractor and distractor tools for the implantation of intervertebral implants into the spine area of an animal, particularly humans. The retractor distractor blade includes structures for attaching the blade to a retractor or distractor tool to provide visual access to a surgical site. The blade is provided with a threaded member connected to a flexible lasso for securement around a portion of a pedicle screw or bone screw. Once the lasso is secured to the pedicle screw, the retractor is prevented from moving out of the surgical site. Operation of the distractor or retractor tool can then be utilized to provide distraction to the spinal vertebrae for implant insertion or spinal alignment. Once the procedure is sufficiently complete, the lasso can be removed from the pedicle screws.

The invention belongs to the technical field of medical equipment, and particularly discloses a manufacturing method of a non-uniform intervertebral disc implant based on Gyandroid unit cells, which comprises the following steps: selecting a material of the intervertebral disc implant; a three-period minimal curved surface Gyandroid type unit cell is adopted as the configuration of the intervertebral disc implant to fill the intervertebral disc space; the structure of the intervertebral disc implant is non-uniformly designed by changing the wall thickness of the Gyandroid unit cell according to weighted stress distribution of the intervertebral disc of the lumbar vertebra movement unit under different working conditions; the intervertebral disc implant with the porosity of 50%-80% is designed. According to the manufacturing method of the non-uniform intervertebral disc implant based on the Gyandroid unit cell, the manufactured intervertebral disc implant has good buffering performance and biocompatibility, so that after a patient receives intervertebral disc replacement, the lumbar vertebra segment of the patient can recover the normal physiological / motor function as much as possible, and the intervertebral disc implant has the advantages of being simple in structure, convenient to operate and high in practicability. The regeneration of the cartilage endplate and the bony structure adjacent to the implant can be promoted, and the stability of the implant and the lumbar segment is improved.

A spinal disc implant including a body defined by a plurality of interwoven or braided nitinol strands. The body includes a first end and a second end. The nitinol strands come together at the first end and are secured with a first fitting. The nitinol strands also come together at the second end and are secured with a second fitting. The second fitting can include a snare hook. The braided nitinol skeleton is internally assembled within the intervertebral disc. The implant is filled with liquid, gel or silicone when utilized as a motion preserving nucleus pulpous implant. The implant is filled with bone graft material when utilized as an inter-body fusion implant. An instrument and technique that provides a minimally invasive “needle based” solution to address degenerative disc disease with enhanced structural integrity of the spine compared to conventional surgical devices and techniques.

The invention discloses an intervertebral disc implant manufacturing method and an intervertebral disc implant. The manufacturing method of the intervertebral disc implant comprises the following steps that the upper bone plate and the lower bone plate are manufactured in an additive mode; an upper fiber ring and a lower fiber ring are manufactured through additive manufacturing, the upper fiber ring is connected to the lower side of the upper bone plate, and the lower fiber ring is connected to the upper side of the lower bone plate; the polymer nucleus pulposus is manufactured in the lower fiber ring or the upper fiber ring in an additive mode; and the lower end face of the upper fiber ring and the upper end face of the lower fiber ring are bonded. The intervertebral disc implant obtained through the manufacturing method of the intervertebral disc implant is more suitable for a human body to use, and the problem that vertebrae need to be cut off in a large scale in a traditional implantation operation can be solved.

Disclosed methods, devices and systems are suitable for performing a minimally-invasive procedure for accessing the intervertebral space along an oblique pathway with an insertion instrument that holds a disc implant, and reorienting the angular relationship between instrument and implant while the implant is inside the body (for example at or within the disc space).

The application discloses an experimental animal spinal column specimen dissection instrument and a dissection method. The dissection instrument comprises a fixing device, a scanning device, a cutting device and a control device. The fixing device is used for fixing the experimental animal spinal column specimen. The scanning device is used for scanning the fixed experimental animal spinal column specimen and transmitting a scanning image to the control device. The cutting device cuts the experimental animal spinal column specimen according to a cutting instruction of the control device or manually. The dissection instrument of the application integrates the fixing and cutting functions, significantly improves the efficiency and precision of the experimental animal spinal column specimen dissection, reduces the error and labor intensity of manual operation, makes the dissection process more consistent and reliable, and has high flexibility and adaptability, so that the dissection instrument can meet the dissection requirements of spinal column specimens with different sizes and curved shapes, and provide more reliable dissection samples and experimental data support for the fields of spinal column disease research, spinal cord injury repair and artificial vertebral body / intervertebral disc implant research and development.

A dilation introducer for orthopedic surgery is provided for minimally invasive access for insertion of an intervertebral implant. The dilation introducer may be used to provide an access position through Kambin's triangle from a posterolateral approach. A first dilator tube with a first longitudinal axis is provided. An access cannula may be introduced over the first dilator tube. A drill may be inserted through the access cannula and used to perform a foraminoplasty. Surgical instruments may pass through the access cannula to operate on an intervertebral disc and / or insert an intervertebral implant.

Systems, devices, and methods for maintaining motion in an intervertebral disc. A modular disc implant segment may be constructed from a relatively solid material configured to exhibit certain characteristics of a compressible solid, such as an elastomer. The material may be configured to include one or more structural voids, such as a leaf spring design, to facilitate the compression capability of the modular disc implant segments such that an entire disc composed of multiple modular disc implant segments can compress as the implant recipient moves.

A spinal disc implant including a body defined by a plurality of interwoven or braided nitinol strands. The body includes a first end and a second end. The nitinol strands come together at the first end and are secured with a first fitting. The nitinol strands also come together at the second end and are secured with a second fitting. The second fitting can include a snare hook. The braided nitinol skeleton is internally assembled within the intervertebral disc. The implant is filled with liquid, gel or silicone when utilized as a motion preserving nucleus pulpous implant. The implant is filled with bone graft material when utilized as an inter-body fusion implant. An instrument and technique that provides a minimally invasive “needle based” solution to address degenerative disc disease with enhanced structural integrity of the spine compared to conventional surgical devices and techniques.

Disclosed are systems, devices, methods and surgical procedures for altering and / or correcting the alignment of adjacent bones, including bones of the spine.

Systems, apparatuses and methods for preserving motion in an intervertebral disc. Modular disc implant segments can be constructed from a relatively rigid material with compressive spring lobes to act similar to an elastomer. The lobes may be configured to have a C-shaped outer wall and one or more spring arms, such as a leaf springs, to facilitate the modular disc implant segment's ability to compress, thereby enabling an entire intervertebral disc constructed from multiple modular disc implant segments to compress with the implant recipient's movement. The implant segments are sized to be inserted serially into a space defined by the annular fibrosus after removal of the nucleus pulposus with connections being made between adjacent segments in the space during the insertion process.

An intervertebral implant includes a body having an open lattice structure formed by a plurality of elongate struts, including a first strut and a second strut. The body includes a contact surface configured to confront a bone plate, the contact surface including a node defined by an intersection of the first strut and the second strut The implant includes an enlarged contact member disposed at the node defined by the intersection of the first strut and the second strut, wherein the enlarged contact member has a substantially flattened outer-facing surface forming part of the contact surface, and wherein the enlarged contact member has a shape that is oblong along a first axis that extends at an angle with respect to at least one of the first strut and the second strut.

Systems and methods for designing patient-specific medical devices are described herein. In some embodiments, a method includes obtaining patient data that includes image data and kinematic data of a patient's spine. A virtual model of the patient's spine is generated and can be manipulated until a target anatomical configuration is achieved. A patient-specific implant can then be designed based at least in part on the target anatomical configuration and the kinematics such that, when the patient-specific implant is implanted in the patient, the patient-specific implant provides the target anatomical correction while maintaining or improving the kinematics of the patient's spine.

To provide patient-specific artificial discs, implants and associated systems and methods.SOLUTION: Systems and methods for designing patient-specific medical devices are described herein. In some embodiments, a method includes obtaining patient data that includes image data and kinematic data of a patient's spine. A virtual model of the patient's spine is generated and can be manipulated until a target anatomical configuration is achieved. A patient-specific implant can then be designed based at least in part on the target anatomical configuration and the kinematics such that, when the patient-specific implant is implanted in the patient, the patient-specific implant provides the target anatomical correction while maintaining or improving the kinematics of the patient's spine.SELECTED DRAWING: Figure 1C