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The KHEIRON® Spinal Fixation System, including patient specific K-ROD, is intended to provide immobilization and stabilization of spinal segments in skeletally mature patients as an adjunct to fusion in the following acute and chronic instabilities or deformities of thoracic, lumbar, and sacral spine: degenerative disc disease (defined as back pain of discogenic origin with degeneration of the disc confirmed by history and radiographic studies), degenerative spondylolisthesis with objective evidence of neurological impairment, fracture, deformities or curvatures (i.e. scoliosis, kyphosis, and/or lordosis), spinal tumor, pseudarthrosis and failed previous fusion. When used for posterior, non-cervical, pedicle screw fixation in pediatric patients, the KHEIRON® System including patient specific K-ROD is indicated as an adjunct to fusion to treat progressive spinal deformities (i.e., scoliosis, kyphosis, or lordosis) including idiopathic scoliosis, and congenital scoliosis. Additionally, the KHEIRON® Spinal Fixation System including patient specific K-ROD is intended to treat pediatric patients diagnosed with spondylolisthesis/spondylolysis, fracture caused by tumor and/or trauma, pseudarthrosis, and/or failed previous fusion. This system is intended to be used with autograft and/or allograft. Pediatric pedicle screw fixation is limited to a posterior approach. Patient specific K-ROD devices are compatible with Nu Vasive Reline System components that are compatible with ø5.5mm and/or ø6.0mm rods as well as screws ø4.5mm or larger and at least 25mm in length.

S.M.A.I.O.'s patient specific K-ROD is part of the 510(k) cleared KHEIRON® Spinal Fixation system (K211981) designed for stabilization and correction of chronic instability or deformity of the thoracic, lumbar, and sacral spine. The patient specific K-ROD is manufactured from Ti-6Al-4V ELI per ASTM F136 and is available in diameters of 5.5 and 6.0 mm. The NuVasive Reline System is a 510(k) cleared pedicle screw system (K223181) that consists of a variety of screws, hooks, rods, lock screws, transverse connectors, rod-to-rod connectors, iliac connectors, and general instruments. Implant components are available in a variety of sizes and can be rigidly locked into a variety of different configurations to suit the individual pathology and anatomical conditions of the patient. The NuVasive Reline System is designed to provide immobilization and stabilization of spinal segments as an adjunct to fusion in the treatment of acute and chronic instabilities or deformities of the posterior thoracic, lumbar, and sacral spine. The NuVasive Reline System is also used to treat severe spondylolisthesis (Grades 3 and 4) of the L5-S1 vertebral joint in skeletally mature patients receiving fusion by autogenous bone graft. The purpose of this Special 510(k) Device Modification is to extend indication of S.M.A.I.O.'s patient specific K-ROD (K211981) for use with the NuVasive Reline System (K223181).

The KBA3D v2.0.0 is intended for assisting healthcare professionals in viewing and measuring images as well as planning spine surgeries. The device allows surgeons and service providers to perform spine related measurements on images, and to plan surgical procedures. The device also includes tools for measuring anatomical components for design and placement of surgical implants. Clinical judgment and experience are required to properly use the software. The patient population targeted with the use of the KBA3D v2.0.0 software includes patients with mature skeletons requiring imaging measurements and planning of surgical procedures. The Bending algorithm is intended for patients older than 22 years old.

The subject device KBA3D v2.0.0 is a SaaS software solution developed by S.M.A.I.O for the medical community; it is a second, independent version of the original KBA3D cleared by FDA in K213975. The current version of the KBA3D software is v.2.0.0. The user needs and requirements of the subject device were jointly defined by S.M.A.I.O and NuVasive. The software is intended to view images, perform spine related measurements, and plan surgical procedures such as osteotomies of the spine and templating of implants (screws, cages, rods). KBA3D V2.0.0 software can be used by health professionals (orthopedic surgeons, radiologists, neurosurgeons) and service providers (imaging technicians, clinical study technicians) who are trained in spine imaging and pathologies. The KBA3D V2.0.0 software is intended for patients requiring measurements and planning of surgical procedures. KBA3D v2.0.0 aims to achieve three objectives: - 1. From two perpendicular patient's standing x-rays including patient's spine and pelvis from the femoral heads to the cervical levels, provide 3D scaled representation of the femoral heads, sacral plate, and vertebral bodies. Provide related shape and positioning parameters measurements (disc/vertebra/height/angulation), main curvatures description and global balance assessment. - 2. Simulate potential effects of a spine surgery on spinopelvic alignment and provide related shape and positioning parameters calculation. - 3. Visualize scaled representation of implant range (pedicle screws, interbody cages, union rods) relative to spinopelvic representation (pre-op versus realigned) to establish possible implant selection scenarios. The software is not intended to predict the results of surgery as S.M.A.I.O does not provide tools to carry out planning. Therefore, regarding implant sizing, positioning, and correction impacts, accuracy levels provided by S.M.A.I.O are solely based on theoretical calculations that are not correlated to the output of surgery. KBA3D V2.0.0 provides scaled and simplified representations of the screws and cages relative to the patient's spine and pelvis. Bendini service (part of NuVasive Pulse System, K210574, reference device): - The first request from the software to the Bendini system enables the software to retrieve the most up-to-date benders/rods configuration file. - A second request from the software to the Bendini system enables the software to obtain specific bending instructions for the rod. Note: The Bendini Rod Bending algorithm is intended for patients older than 22 years old. The NuVasive Bendini Web App service is comprised of an API REST web service that facilities outside clients to utilize the NuVasive Bending algorithm. This algorithm is identical to the Bendini algorithm in K210574 for the NuVasive Pulse System and is hosted using the Microsoft Azure App Service. The KEOPS database manages connection to the software, patient data, and storage of data (X-rays and simulations).

The KHEIRON System, including patient specific K-ROD, is intended to provide immobilization and stabilization of spinal segments in skeletally mature patients as an adjunct to fusion in the following acute and chronic instabilities or deformities of thoracic, lumbar, and sacral spine: degenerative disc disease (defined as back pain of discogenic origin with degeneration of the disc confirmed by history and radiographic studies), degenerative spondylolisthesis with objective evidence of neurological impairment, fracture, dislocation, deformities (i.e., scoliosis, kyphosis, and/or lordosis), spinal tumor, pseudarthrosis and failed previous fusion. When used for posterior, non-cervical, pedicle screw fixation in pediatric patients, the KHEIRON System implants are indicated as an adjunct to fusion to treat progresive spinal deformities (i.e. scoliosis, or lordosis) including idiopathic scoliosis, neuromuscular scoliosis. Additionally, the KHEIRON Spinal Fixation System is intended to treat pediatic patients diagnosed with spondylolysis, fracture caused by tumor and/or trauma, pseudarthrosis, and/or failed previous fusion. The system is intended to be used with autograft and/or allograft. Pediatric pedicle screw fixation is limited to a posterior approach.

K-RODs are titanium alloys bent rods, available in diameters 5.5mm and 6mm, which shape is a 3D spline designed to meet the need of specific correction of a patient. K-RODs are to be used as a part of the KHEIRON® Spinal Fixation System (K201659) to reach intended use. KHEIRON® Spinal Fixation System is intended to help provide immobilization and stabilization of spinal segments as an adjunct to fusion of the thoracic, lumbar, and/or sacral spine. The KHEIRON® Spinal Fixation System may be used for a variety of conditions that affect the thoracic and lumbar spine. In cases in which the posterior elements are fractured, the spinal fixation system offers an excellent mean of stabilizing of a specific spinal segment. KHEIRON® Spinal Fixation System includes screws, rods and connecting components in a wide variety of sizes and shapes, which can be locked in various configurations, each assembly being tailormade. KHEIRON pedicular screws must be used with Ø 5.5mm and Ø 6mm rods. The K-ROD patient specific devices are available in Ø5.5 and Ø6mm.

The KEOPS Balance Analyzer 3D is intended for assisting healthcare professionals in viewing and measuring images as well as planning spine surgeries. The device allows surgeons and service providers to perform spine related measurements on images, and to plan surgical procedures. The device also includes tools for measuring anatomical components for design and placement of surgical implants. Clinical judgment and experience are required to properly use the software.

The KEOPS Balance Analyzer 3D (KBA3D) is a software solution developed for the medical community. It is intended to view images and perform spine related measurements and plan surgical procedures. The image formats supported include standards such as jpeg, tiff, png, and DICOM file types. Images can be stored in the KEOPS database and measurements made using generic measuring and surgical tools within overlays of the images. The KEOPS Balance Analyzer 3D offers the ability to plan spine surgical procedures such as ostectomies of the spine and templating implants (rods). Keops Balance Analyzer 3D is web-based software.

The KHEIRON Spinal Fixation System is intended to provide immobilization of spinal segments in skeletally mature patients as an adjunct to fusion in the treatment of the following acute and chronic instabilities or deformities of thoracic, lumbar, and sacral spine: degenerative disc disease (defined as back pain of discogenic origin with degeneration of the disc confirmed by history and radiographic studies), degenerative spondylolisthesis with objective evidence of neurological impairment, fracture, dislocation, deformities or curvatures (i.e. scoliosis, kyphosis, and/or lordosis), spinal stenosis, spinal tumor, pseudarthrosis and failed previous fusion. When used for posterior, non-cervical, pedicle screw fixation in pediatric patients, the KHEIRON System implants are indicated as an adjunct to fusion to treat progressive spinal deformities (i.e., scoliosis, kyphosis) including idiopathic scoliosis, neuromuscular scoliosis, and congenital scoliosis. Additionally, the KHEIRON Spinal Fixation System is intended to treat pediatic patients diagnosed with spondylolysis, fracture caused by tumor and/or trauma, pseudarthrosis, and/or failed previous fusion. This system is intended to be used with autograft. Pediatric pedicle screw fixation is limited to a posterior approach.

The KHEIRON® Spinal Fixation System may be used for a variety of conditions that affect the thoracic and lumbar spine. In cases in which the posterior elements are fractured, the pedicle screw offers an excellent means of stabilizing a specific spinal segment. KHEIRON Spinal Fixation System includes screws and connecting components in a wide variety of sizes and shapes, which can be locked in various configurations, each assembly being tailor-made. KHEIRON pedicular screws must be used with Ø 5.5mm and Ø 6mm rods.