Endoscopic Interspinous Insert for Incision-Hole Insertion
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Solution Overview
Problem
The challenge of inserting an interspinous spacer through incision holes during spinal endoscopic operations due to its larger size compared to the incision hole dimensions.
Innovation Solution
An endoscopic interspinous insert comprising a first and second support member with protrusions and an adjustment member, allowing deformation and insertion through incision holes, and adjustable distance between support members for secure fixation between spinous processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an interspinous spacer is used to stabilize spinal segments after discectomy or posterior decompression, then spinal stability is improved, but the spacer cannot pass through the incision hole because its size is larger than the incision hole
Solution Approach 1:
The interspinous spacer is divided into a compression member and a support member that can be separately inserted through the incision hole. The compression member is compressed to a small diameter for insertion, then expands to its full size inside the spinal canal to provide stabilization, while the support member provides structural framework. This segmentation allows the spacer to pass through the limited incision hole while maintaining its stabilizing function.
Solution Approach 2:
The compression member is designed with changeable diameter parameters - it can be compressed to a small diameter for insertion through the incision hole, then expands to a larger diameter inside the spinal canal to provide the necessary support and stability. This parameter change enables the spacer to overcome the size limitation of the incision hole while maintaining spinal stability.
2Ease of operation
If the interspinous spacer is compressed to fit through the incision hole, then insertion is enabled, but the spacer must be designed with complex compression and expansion mechanisms
Solution Approach 1:
The spacer is segmented into a compression member with elastic properties and a separate support member. The compression member can be simply compressed and expanded without complex mechanisms, while the support member provides the structural framework. This segmentation simplifies the overall design by separating the compression function from the support function.
Solution Approach 2:
The compression member utilizes elastic parameter changes - it can be compressed to a small diameter for insertion and automatically expands to its full size inside the spinal canal due to its elastic properties. This eliminates the need for complex compression and expansion mechanisms, as the elastic material naturally provides the expansion function.
3Ease of operation
If the compression member is made of elastic material to enable compression and expansion, then insertion through incision hole is possible, but the elastic material may deform under spinal load
Solution Approach 1:
The spacer is divided into a compression member made of elastic material and a support member made of rigid material. The elastic compression member provides the necessary expansion force and can deform under load, while the rigid support member maintains the overall structural stability and shape. This segmentation allows the elastic material to perform its compression function while the rigid support member prevents excessive deformation under spinal load.
Solution Approach 2:
The interspinous spacer uses composite materials - an elastic material for the compression member and a rigid material for the support member. This composite structure combines the advantages of both materials: the elastic material provides compression and expansion capabilities, while the rigid material provides structural stability and load-bearing capacity, preventing deformation under spinal load.
Data Source
AI summary
Disclosed is an endoscopic interspinous insert capable of being inserted into a body through an incision hole during a spinal endoscopic operation. The endoscopic interspinous insert includes a first support member including a first support body configured to support any one of the adjacent spinous processes, and a plurality of first support protrusions protruding from two opposite ends of the first support body, a second support member including a second support body configured to support the other of the adjacent spinous processes, and a plurality of second support protrusions protruding from two opposite ends of the second support body, and an adjustment member disposed between the first support member and the second support member and configured to adjust a distance between the first support member and the second support member.