Percutaneous Lateral Recess Decompression With Lamina Channel Access
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Solution Overview
Problem
Current surgical procedures for treating spinal stenosis are highly invasive, requiring large incisions and general anesthesia, leading to significant tissue damage, prolonged recovery, and increased risk of spinal instability.
Innovation Solution
A percutaneous method using fluoroscopic imaging and anatomical landmarks to access and decompress nerve roots by forming a channel in the lateral recess area of the lamina, employing a device set that includes docking pins and an access portal for minimally invasive bone removal without direct visualization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional open surgical procedures are used to decompress nerve roots, then complete decompression can be achieved, but large incisions and extensive tissue removal are required
Solution Approach 1:
The surgical approach is segmented into percutaneous access points rather than requiring a large continuous incision. The device allows decompression through multiple small entry points, reducing overall tissue disruption while maintaining decompression effectiveness.
Solution Approach 2:
A percutaneous access device serves as an intermediary tool that enables decompression without direct open access to the surgical site. The device includes a guide wire and reaming mechanism that can be introduced through small incisions to achieve the decompression function that would otherwise require extensive tissue removal.
2Ease of operation
If traditional open surgery with large incisions is performed, then adequate access to the surgical site is achieved, but recovery time is prolonged
Solution Approach 1:
The surgical access requirement is extracted and concentrated into a small percutaneous opening rather than a large incision. The device enables all necessary surgical functions (access, decompression, hemostasis) to be performed through this minimal access point, dramatically reducing the surgical footprint and associated recovery time.
Solution Approach 2:
The surgical approach transitions from a two-dimensional large incision to a three-dimensional percutaneous access system. The device uses a guide wire and expandable reaming mechanism that operates through a small opening, effectively using the depth dimension to achieve adequate access without increasing the surface area of the incision.
3Measurement precision
If traditional open procedures are used, then complete visualization of the surgical site is achieved, but damage to stabilizing muscles and ligaments occurs
Solution Approach 1:
The percutaneous access device acts as an intermediary that provides sufficient visualization and access without requiring direct open exposure of the surgical site. The guide wire and reaming mechanism enable precise decompression while preserving the integrity of surrounding muscles and ligaments that are critical for spinal stability.
Solution Approach 2:
The surgical intervention is applied locally through a percutaneous approach rather than requiring extensive exposure of the entire surgical field. This localized approach minimizes disruption to stabilizing structures while maintaining adequate access and visualization for the decompression procedure.
4Object-affected harmful factors
If percutaneous access is used without direct visualization, then tissue damage is minimized, but precision of bone removal is reduced
Solution Approach 1:
The device incorporates a guide wire that provides real-time feedback on the reaming path and depth. The guide wire allows the surgeon to control the reaming process precisely, ensuring accurate bone removal while maintaining the percutaneous access benefits of minimal tissue damage.
Solution Approach 2:
The guide wire is inserted and positioned in advance to establish the precise reaming path before bone removal begins. This preliminary action ensures that subsequent bone removal operations will be accurate and controlled, achieving precision without requiring direct visualization of the bone surface.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Minimizes tissue damage and recovery time by allowing precise, less invasive decompression of nerve roots, reducing pain and the risk of spinal instability through a percutaneous approach.
Implementation Method 1
A percutaneous method using fluoroscopic imaging and anatomical landmarks to access and decompress nerve roots
Data Source
AI summary
The present disclosure is directed to devices, kits, and methods for treating lumbar spinal stenosis by at least partially decompressing a compressed nerve root. The method can include identifying the compressed nerve root and percutaneously accessing a region of a lamina located adjacent to the compressed nerve root. The method can also include forming a channel through the region of the lamina, wherein the channel can be formed medial to a lateral border of the lamina. Further, the method can include expanding the channel in a lateral direction.