(88 days)
The intended use is for drilling, reaming, and decorticating of bone and other bone-related tissue during general surgical orthopedic procedures in a variety of surgical procedures. It is also usable in the placement of screws, wires, pins, and other fixation devices.
This attachment is designed for general surgical use where hard tissue and/or bone must be cut, reamed, drilled, and/or fixated with screws, including but not limited to, the hand, wrist, elbow, sternum, shoulder, foot, ankle, knee, and hip.
The intended use is also to facilitate the placement of the pedicle screws using the power technique (cordless). When the attachment is attached, the Stryker Power Tools provide power to rotate the screwdrivers for the insertion of pedicle screws, in non-cervical spine surgical procedures.
The Stryker POWEReam ¼" Drive is an attachment used with a Stryker battery powered handpiece that drives accessories to achieve their intended function. The design reduces the speed and increases the torque output from the handpiece by a ratio of 5:1. The accessories are intended for drilling, reaming, and decorticating of bone and other bonerelated tissue during general orthopedic procedures in a variety of surgical procedures.
The purpose of this premarket notification is to seek clearance for a new indication for the Stryker POWEReam 1/4" Drive (part number 4405-250-000). This indication is for facilitating the placement of pedicle screws in non-cervical spine surgical procedures.
The provided document is a 510(k) premarket notification for a medical device called "POWEReam 1/4" Drive" manufactured by Stryker Instruments. It is a traditional 510(k) submission, meaning it aims to demonstrate substantial equivalence to a legally marketed predicate device.
The crucial point for your request is that this device is a mechanical surgical instrument, not an AI/software-based medical device. Therefore, the concepts of acceptance criteria for AI performance, training sets, test sets, expert ground truth, MRMC studies, or standalone algorithm performance are not applicable to this submission.
The document explicitly states:
- "Summary of Non-Clinical Testing: A suite of non-clinical testing was executed to demonstrate substantial equivalence to the predicate device. Testing included: Performance Design Verification Testing, Human Factors and Usability Engineering, Simulated Use Design Validation Testing. All pre-defined acceptance criteria for the above tests have been met." (Section 7.7)
- "Summary of Clinical Testing: Clinical testing was not required for this traditional 510(k)." (Section 7.8)
This means the acceptance criteria and performance data are related to the mechanical and functional aspects of the device (e.g., torque, speed reduction, human factors of use), not diagnostic accuracy or AI performance on medical images.
Therefore, I cannot provide the information requested in your prompt regarding acceptance criteria and study details for an AI-based device, as this document describes a traditional mechanical surgical instrument submission.
§ 888.3070 Thoracolumbosacral pedicle screw system.
(a)
Identification. (1) Rigid pedicle screw systems are comprised of multiple components, made from a variety of materials that allow the surgeon to build an implant system to fit the patient's anatomical and physiological requirements. Such a spinal implant assembly consists of a combination of screws, longitudinal members (e.g., plates, rods including dual diameter rods, plate/rod combinations), transverse or cross connectors, and interconnection mechanisms (e.g., rod-to-rod connectors, offset connectors).(2) Semi-rigid systems are defined as systems that contain one or more of the following features (including but not limited to): Non-uniform longitudinal elements, or features that allow more motion or flexibility compared to rigid systems.
(b)
Classification. (1) Class II (special controls), when intended to provide immobilization and stabilization 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 the thoracic, lumbar, and sacral spine: severe spondylolisthesis (grades 3 and 4) of the L5-S1 vertebra; degenerative spondylolisthesis with objective evidence of neurologic impairment; fracture; dislocation; scoliosis; kyphosis; spinal tumor; and failed previous fusion (pseudarthrosis). These pedicle screw spinal systems must comply with the following special controls:(i) Compliance with material standards;
(ii) Compliance with mechanical testing standards;
(iii) Compliance with biocompatibility standards; and
(iv) Labeling that contains these two statements in addition to other appropriate labeling information:
“Warning: The safety and effectiveness of pedicle screw spinal systems have been established only for spinal conditions with significant mechanical instability or deformity requiring fusion with instrumentation. These conditions are significant mechanical instability or deformity of the thoracic, lumbar, and sacral spine secondary to severe spondylolisthesis (grades 3 and 4) of the L5-S1 vertebra, degenerative spondylolisthesis with objective evidence of neurologic impairment, fracture, dislocation, scoliosis, kyphosis, spinal tumor, and failed previous fusion (pseudarthrosis). The safety and effectiveness of these devices for any other conditions are unknown.”
“Precaution: The implantation of pedicle screw spinal systems should be performed only by experienced spinal surgeons with specific training in the use of this pedicle screw spinal system because this is a technically demanding procedure presenting a risk of serious injury to the patient.”
(2) Class II (special controls), when a rigid pedicle screw system is intended to provide immobilization and stabilization of spinal segments in the thoracic, lumbar, and sacral spine as an adjunct to fusion in the treatment of degenerative disc disease and spondylolisthesis other than either severe spondylolisthesis (grades 3 and 4) at L5-S1 or degenerative spondylolisthesis with objective evidence of neurologic impairment. These pedicle screw systems must comply with the following special controls:
(i) The design characteristics of the device, including engineering schematics, must ensure that the geometry and material composition are consistent with the intended use.
(ii) Non-clinical performance testing must demonstrate the mechanical function and durability of the implant.
(iii) Device components must be demonstrated to be biocompatible.
(iv) Validation testing must demonstrate the cleanliness and sterility of, or the ability to clean and sterilize, the device components and device-specific instruments.
(v) Labeling must include the following:
(A) A clear description of the technological features of the device including identification of device materials and the principles of device operation;
(B) Intended use and indications for use, including levels of fixation;
(C) Identification of magnetic resonance (MR) compatibility status;
(D) Cleaning and sterilization instructions for devices and instruments that are provided non-sterile to the end user; and
(E) Detailed instructions of each surgical step, including device removal.
(3) Class II (special controls), when a semi-rigid system is intended to provide immobilization and stabilization of spinal segments in the thoracic, lumbar, and sacral spine as an adjunct to fusion for any indication. In addition to complying with the special controls in paragraphs (b)(2)(i) through (v) of this section, these pedicle screw systems must comply with the following special controls:
(i) Demonstration that clinical performance characteristics of the device support the intended use of the product, including assessment of fusion compared to a clinically acceptable fusion rate.
(ii) Semi-rigid systems marketed prior to the effective date of this reclassification must submit an amendment to their previously cleared premarket notification (510(k)) demonstrating compliance with the special controls in paragraphs (b)(2)(i) through (v) and paragraph (b)(3)(i) of this section.