Interspinous Stabilization Device for Spinal Stenosis
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Solution Overview
Problem
Current surgical treatments for spinal stenosis, such as spinal fusion, are invasive and can limit vertebral activity, while non-fusion techniques are often complex and difficult to perform, necessitating a minimally invasive, non-fusion method for stabilizing vertebrae without bone or muscle removal.
Innovation Solution
An interspinous stabilization device with a supporting member and side members, equipped with extendable arms and a fastener system, is implanted between spinous processes to stabilize the spine, maintain anatomical distance, and relieve pressure on the spinal cord and nerves, using a posterior approach that is less invasive than traditional methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If spinal fusion is performed to treat spinal stenosis, then stability is improved, but vertebral activity is limited and invasive damage occurs
Solution Approach 1:
The device divides the stabilization function into separate components: a supporting member for load bearing and side members with fasteners for positioning and securing. This segmentation allows the vertebrae to maintain their natural activity while achieving stability through distributed support rather than complete fusion.
Solution Approach 2:
The interspinous stabilization device acts as an intermediary structure between the spinous processes, providing mechanical support and stability without requiring direct fusion of the vertebrae. This mediator approach maintains vertebral independence and activity while achieving the desired stabilization effect.
2Ease of operation
If non-fusion techniques are used to maintain vertebral function, then vertebral activity is preserved, but the procedures are highly invasive and difficult to perform
Solution Approach 1:
The device is segmented into modular components (supporting member, side members, fasteners) that can be independently positioned and secured. This modularity simplifies the surgical procedure by allowing step-by-step placement without requiring complex one-piece implants or extensive bone removal.
Solution Approach 2:
Instead of removing bone and muscle tissue to achieve stabilization, the device inverts the approach by adding a supportive structure between the spinous processes. This inversion transforms the procedure from destructive (bone removal) to constructive (device insertion), reducing surgical complexity and invasiveness.
3Reliability
If traditional surgical treatment is performed, then spinal stenosis is addressed, but bone or muscle removal is required
Solution Approach 1:
The device converts the harmful effect of spinal stenosis (narrowing of the spinal canal) into a beneficial outcome by using the spinous processes as anchor points for the supporting member. This approach utilizes existing spinal structures to provide stabilization and expand the effective spinal canal space without requiring removal of bone or muscle tissue.
Solution Approach 2:
The interspinous stabilization device serves as an intermediary that provides mechanical support and expands the spinal canal without directly removing any tissue. The device mediates between the compressed spinal cord and the spinous processes, creating space and reducing pressure through its structural presence.
Data Source
AI summary
An interspinous stabilization device includes: (1) a supporting member with a top surface and a bottom surface both being configured to engage spinous processes; (2) two side members connected to the supporting member; (3) a fastener attached to the side members; and optionally (4) two extendable arms each secured on one of the side members.