(256 days)
The COSY Cervicothoracic Occipital Rod-Screw System is intended to provide immobilization of spinal segments as an adjunct to fusion for the following acute and chronic instabilities of the craniocervical junction, the cervical spine (C1-C7), and the thoracic spine from T1-T3: traumatic spinal fraumatic dislocations; instabilities or deformity; failed previous fe.g., pseudoarthrosis); tumors involving the cervical spine; degenerative disease, including intractable radioulopathy and/or myelopathy, neck and/or arm pain of discogenic origin as confirmed by radiographic studies, and degenerative disease of the facets with instability.
The COSY cervicothoracic occipital rod-screw system is also intended to restore the integrity of the spinal column even in the absence of fusion for a limited time period in patients with advance stage turnors involving the cervical spine in whom life expectancy is of limited duration to permit achievement of fusion.
In order to achieve additional levels of fixation, the COSY Cervicothoracic Occipital Rod-Screw System may be connected to the components of the DIPLOMAT System or MONOPOLY System using the rod-to-rod connectors or transition rods.
The COSY Cervicothoracic Occipital Rod-Screw is a multiple component, posterior spinal fixations system which consists of solid screws, cannulated screws, standard tulips, angulated tulips, curved rods, straight rods, hybrid rods, parallel connectors, inline connectors, occipital plates, occipital bone screws, hooks, and offset connectors. All implants, except of variations of the rods, are available in Ti-6AL-4V ELI per ASTM F136. Rods are available in Ti-6AL-4V ELI per ASTM F136 or Co-Cr28-Mo6 per ASTM F1537. The pedicle screws consist of a tulip and a pedicle screw shaft. The shaft has a prominent thread, to provide anchorage of the screw in the pedicle section of the vertebrae. Each tulip is securely attached to the rod via a set screw. The shafts of the pedicle screws are provided in different lengths, diameters, fully or partially threaded, and with a symmetric anqulation to provided adaptability to the patient's anatomy. The rods can be shortened on site by the surgeon. The occipital plate is available with four or five holes and areas to be bent for better fixation to the occipital part of the skull. The plate is fixed via bone screws and as two gliding tulips to provided anchoring of the rod. The gliding tulips are constructed similar to the tulips of the pedicle screws in the area of the rod- set screw -tulip intersection.
It seems there's a misunderstanding. The provided document is an FDA 510(k) clearance letter for a medical device called the "COSY Cervicothoracic Occipital Rod-Screw System." This document is related to spinal implants, not a diagnostic AI device.
Therefore, the requested information about "acceptance criteria and the study that proves the device meets the acceptance criteria" in the context of an AI/Machine Learning device (which would involve test sets, expert consensus, ground truth, etc.) is not applicable to this document.
The document describes mechanical testing performed to demonstrate the safety and effectiveness of the spinal implant system, compared to a predicate device. It addresses:
- Indications for Use: What the device is designed to treat.
- Device Description: What the components are made of and how they function.
- Comparison to Predicate Device: How it's similar to and different from devices already on the market.
- Mechanical Testing: Listing of ASTM standards used for dynamic and static testing related to compression, bending, and torsion.
There is no information within this document that aligns with the questions asked about AI/ML device validation.
If you have a document related to an AI/ML diagnostic or prognostic device, please provide that document, and I will do my best to answer your questions based on its content.
§ 888.3075 Posterior cervical screw system.
(a)
Identification. Posterior cervical screw systems are comprised of multiple, interconnecting components, made from a variety of materials that allow an implant system to be built from the occiput to the upper thoracic spine to fit the patient's anatomical and physiological requirements, as determined by preoperative cross-sectional imaging. Such a spinal assembly consists of a combination of bone anchors via screws (i.e., occipital screws, cervical lateral mass screws, cervical pedicle screws, C2 pars screws, C2 translaminar screws, C2 transarticular screws), longitudinal members (e.g., plates, rods, including dual diameter rods, plate/rod combinations), transverse or cross connectors, interconnection mechanisms (e.g., rod-to-rod connectors, offset connectors), and closure mechanisms (e.g., set screws, nuts). Posterior cervical screw systems are rigidly fixed devices that do not contain dynamic features, including but not limited to: non-uniform longitudinal elements or features that allow more motion or flexibility compared to rigid systems.Posterior cervical screw systems are intended to provide immobilization and stabilization of spinal segments in patients as an adjunct to fusion for acute and chronic instabilities of the cervical spine and/or craniocervical junction and/or cervicothoracic junction such as: (1) Traumatic spinal fractures and/or traumatic dislocations; (2) deformities; (3) instabilities; (4) failed previous fusions (
e.g., pseudarthrosis); (5) tumors; (6) inflammatory disorders; (7) spinal degeneration, including neck and/or arm pain of discogenic origin as confirmed by imaging studies (radiographs, CT, MRI); (8) degeneration of the facets with instability; and (9) reconstruction following decompression to treat radiculopathy and/or myelopathy. These systems are also intended to restore the integrity of the spinal column even in the absence of fusion for a limited time period in patients with advanced stage tumors involving the cervical spine in whom life expectancy is of insufficient duration to permit achievement of fusion.(b)
Classification. Class II (special controls). The special controls for posterior cervical screw systems are:(1) The design characteristics of the device, including engineering schematics, must ensure that the geometry and material composition are consistent with the intended use.
(2) Nonclinical performance testing must demonstrate the mechanical function and durability of the implant.
(3) Device components must be demonstrated to be biocompatible.
(4) Validation testing must demonstrate the cleanliness and sterility of, or the ability to clean and sterilize, the device components and device-specific instruments.
(5) Labeling must include the following:
(i) A clear description of the technological features of the device including identification of device materials and the principles of device operation;
(ii) Intended use and indications for use including levels of fixation;
(iii) Device specific warnings, precautions, and contraindications that include the following statements:
(A) “Precaution: Preoperative planning prior to implantation of posterior cervical screw systems should include review of cross-sectional imaging studies (
e.g., CT and/or MRI) to evaluate the patient's cervical anatomy including the transverse foramen, neurologic structures, and the course of the vertebral arteries. If any findings would compromise the placement of these screws, other surgical methods should be considered. In addition, use of intraoperative imaging should be considered to guide and/or verify device placement, as necessary.”(B) “Precaution: Use of posterior cervical pedicle screw fixation at the C3 through C6 spinal levels requires careful consideration and planning beyond that required for lateral mass screws placed at these spinal levels, given the proximity of the vertebral arteries and neurologic structures in relation to the cervical pedicles at these levels.”
(iv) Identification of magnetic resonance (MR) compatibility status;
(v) Cleaning and sterilization instructions for devices and instruments that are provided non-sterile to the end user, and;
(vi) Detailed instructions of each surgical step, including device removal.