Pedicle System Adapter for Spinal Deformity Correction
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Solution Overview
Problem
Conventional spinal deformity correction surgeries involve large incisions, extensive tissue retraction, and long recovery times, leading to patient discomfort, increased risk of infection, and high expenses due to the need for extensive muscle and ligament detachment and reattachment.
Innovation Solution
A pedicle system with an adapter and multipoint alignment system, utilizing pedicle screws, pedicle posts, adapters, holders, and nuts to apply pressure and align vertebrae, allowing for correction of spinal deformities through minimal incisions by interconnecting pedicle posts and using quick release mechanisms and threaded couplings to maintain alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional spinal deformity correction surgery is performed with large incisions and extensive tissue retraction, then the vertebrae can be realigned, but the recovery time increases and patient discomfort increases
Solution Approach 1:
The spinal correction system is divided into multiple independent components: pedicle screws anchored in individual vertebrae, rods connecting these screws, and intermediaries for coupling. This segmentation allows precise realignment of specific vertebrae without requiring extensive tissue retraction or large incisions, thereby reducing recovery time while maintaining alignment precision.
Solution Approach 2:
Intermediary components such as adapters and coupling mechanisms are introduced between the pedicle screws and rods. These intermediaries facilitate the connection and realignment process, enabling precise vertebral realignment through minimal invasive means, thus reducing the need for extensive tissue manipulation and decreasing recovery time.
2Manufacturing precision
If extensive muscle and ligament detachment is performed during surgery, then the vertebrae can be accessed and realigned, but the risk of infection increases and expense increases
Solution Approach 1:
The pedicle screws are extracted and anchored directly into the pedicles of the vertebrae through minimal incisions, bypassing the need for extensive muscle and ligament detachment. This extraction approach reduces the exposure of soft tissues to contamination, thereby lowering infection risk while maintaining the ability to perform precise vertebral realignment.
Solution Approach 2:
The surgical approach is segmented into discrete anchor points (pedicle screws in individual vertebrae) rather than requiring extensive soft tissue dissection. This segmentation allows precise realignment through targeted insertion and fixation, reducing the overall tissue trauma and infection risk associated with extensive muscle and ligament detachment.
3Ease of operation
If extensive tissue retraction and detachment is performed, then the surgical field is accessible, but the surgical time increases
Solution Approach 1:
The pedicle screws are extracted and inserted directly into the pedicles through small incisions, eliminating the need for extensive tissue retraction and detachment to access the surgical field. This direct extraction approach maintains surgical field accessibility while significantly reducing the time required for tissue manipulation and exposure.
Solution Approach 2:
The pedicle screws are pre-positioned and anchored into the vertebrae before the main realignment procedure begins. This preliminary action establishes the correction framework early in the surgery, reducing the time needed for subsequent tissue retraction and manipulation, thereby increasing overall surgical efficiency.
4Manufacturing precision
If traditional surgical techniques are used with large incisions, then the vertebrae can be realigned, but the expense increases
Solution Approach 1:
The spinal correction system uses segmented components (pedicle screws, rods, intermediaries) that can be precisely fitted to individual patient needs. This modular segmentation reduces the complexity of the overall procedure compared to traditional techniques, lowering surgical costs while maintaining the precision required for effective vertebral realignment.
Solution Approach 2:
The pedicle screws are extracted and anchored directly into the vertebrae through minimal incisions, eliminating the need for extensive tissue retraction and detachment. This extraction approach reduces the resources required for tissue handling, instrumentation, and recovery, thereby reducing overall surgical expense while maintaining alignment precision.
Data Source
AI summary
An adapter including a coupling portion defining a lumen to receive a pedicle post, an intermediate portion including a first end fixedly attached to a side of the coupling portion and including a second end distal from the coupling portion, and a bolt. A proximal end of the bolt is rotatably coupled to the second end of the intermediate portion and a distal end of the bolt includes a connector.