G Device – Interlaminar Implant

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G Device – Interlaminar Implant

Dynamic stabilisation with the “G” Device implant for the treatment of lumbar spinal stenosis: The Device helps to support and stabilise the spine after decompression Surgery or it can be used solely as a spinal support to assist in maintaining the normal extension of the spine, thus helping to alleviate pressure on exiting nerve roots at the affected level.

The advantages of the “G” Device over other similar devices is that it can be Implanted at L5/S1. It is shorter with a curved base to allow this particular level to be dealt with, and this design feature allows it to be implanted lower in the interspinous space, making it generally more stable & secure and allowing for more defined distraction. In addition, the device has clearly defined “teeth” to give it increased stability in situ.

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G Device – Patient Brochure


G Device – Product Leaflet

Key Features


One of the principal tasks of the spine is to stabilise the head and upper body, which enables us to walk upright. The main burden for this support falls on the vertebrae to supply this central support. Their structure gives them particularly good resilience and resistance against fractures possibly caused by serious external forces applied for whatever reason. For example when jumping, climbing, skiing or even walking. The soft tissues associated with the spine (muscles, ligaments, tendons) and the joints; contribute to dynamic stability or limiting the impact of twisting forces at any one single point.

Mechanical Protective Function

The lumbar spine is composed of five vertebrae. A vertebra consists of a vertebral body, a vertebral arch along with its facet joints, and transverse processes. The vertebral body and vertebral arch form a channel through which the exiting spinal nerves run and are protected from external impact. This channel is called the FORAMEN.

Shock Absorption and Mobility

The vertebral discs, or “Shock absorbers”, are in-between the vertebral bodies to buffer the force of an impact. Along with the facet joints, they enable the body to flex during turning, stretching and bending movements. The vertebral disc consists of an outer fibrous ring and a central cushion called the Nucleus Pulposus. The use of a “G” Device, often in conjunction with decompression, is to try to regain support in the area of the disc, and to attempt to take the strain off localised soft tissues and to open the exiting nerve root canal to relieve pressure, and thus reduce or remove pain.