Lamina implants and methods for spinal decompression

Abstract

Lamina plates can include various features that allow a surgeon to couple the plate to a vertebra, such as a plurality of receiving holes for receiving a spinal fixation element. The plate can be shaped and the receiving holes positioned such that spinal fixation elements can be installed with reduced exposure of the spine and along a trajectory that enhances purchase with bone. The lamina plate can include one or more features for coupling at least one receiver head to the plate for receiving a spinal stabilization element. Since the receiver head can be coupled to the plate after the plate is implanted, it does not restrict the range of angles or trajectories at which the spinal fixation elements can be installed.

Description

technical field [0001] The present disclosure relates to spinal decompression and fixation systems, in particular thin layer implants and methods for implanting the thin layer implants in vertebrae. Background technique [0002] A laminectomy is a surgical procedure performed on the spine to relieve pressure on the spinal cord or one or more nerves. Pressure on the spinal cord or nerves can lead to symptoms such as neck and back pain and / or radicular pain in the arms and legs. As the thin layer is removed, compressed nerves may be exposed and pressure on the nerves may be additionally relieved by removing a source of compression, such as a portion of a disc, a segment of a disc, a tumor, or a rough protrusion of bone. [0003] Spinal fixation procedures may be performed in conjunction with laminectomy to align and / or fix a desired relationship between adjacent vertebral bodies. Such spinal fixation procedures typically include positioning multiple spinal fixation component...

AI Technical Summary

Problems solved by technology

Also, any slight miscalculation in the delivery trajectory can cause the distal portion (e.g., tip) of the assembly to pass through the spinal canal or blastopore of the exiting nerve root, thereby causing significant patient injury

As another disadvantage, the limited bone mass and / or bone density typically found in the lateral mass portions of the vertebrae significantly limits the amount of area available to contact the fixation assembly, thereby hindering the ability to effectively position the fixation assembly within the vertebrae. ability

Images