Spinal Construct Connector with Instrument Mating Element
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Solution Overview
Problem
Current spinal correction technologies face challenges in effectively manipulating and stabilizing vertebrae during surgical procedures, particularly in preventing screw plow and bone fracture, while providing efficient load distribution and adjustable correction.
Innovation Solution
A spinal construct system with a connector that engages bone screws and a surgical instrument, allowing for quick release and load distribution across multiple screws, along with a distractor/compressor mechanism for precise manipulation and correction of spinal deformities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If spinal constructs are manipulated with surgical instruments for compression and distraction of vertebrae, then correction of spinal deformities is achieved, but the risk of screw plow and bone fracture increases
Solution Approach 1:
The patent applies preliminary action by pre-positioning the spinal construct with receivers and longitudinal elements before applying corrective forces. The construct is prepared with proper alignment and engagement of bone anchors, allowing controlled compression and distraction forces to be applied through the longitudinal element without causing screw plow or bone fracture during the correction process
Solution Approach 2:
The patent implements beforehand cushioning through the design of the spinal construct that distributes corrective forces across multiple bone anchors and along the longitudinal element. This force distribution mechanism prevents concentration of stress at single points, thereby cushioning against harmful effects like screw plow and bone fracture while achieving the necessary correction precision
2Stability of the object's composition
If implants are used for stabilization of treated section, then spinal alignment is improved, but device complexity increases
Solution Approach 1:
The patent applies universality by designing a spinal construct where the longitudinal element serves multiple functions: it connects bone anchors, provides structural support, enables compression and distraction forces, and maintains spinal alignment. The receivers and mating elements provide universal engagement capabilities that simplify the overall system while achieving stable spinal stabilization
Solution Approach 2:
The patent implements segmentation by dividing the spinal stabilization system into modular components: bone anchors with receivers, a longitudinal element, and mating elements. This segmented design allows each component to perform its specific function while collectively providing stable spinal alignment, reducing overall device complexity through modular assembly
3Adaptability or versatility
If receivers are made movable relative to shafts for adjustment, then adaptability is improved, but reliability decreases due to potential movement resistance
Solution Approach 1:
The patent applies dynamics by designing the receiver-shaft interface to be movable and adjustable during surgery, allowing the spinal construct to be adapted to different spinal configurations and correction needs. The mating elements enable controlled movement and positioning adjustments while maintaining reliable engagement through proper mechanical design that minimizes movement resistance
Data Source
AI summary
A spinal construct comprises a first member engageable with a receiver of a first fastener having a shaft fixed with tissue. A second member is engageable with a receiver of a second fastener having a shaft fixed with the tissue. A longitudinal element connects the members. At least one of the members includes a mating element that is releasably engageable with a surgical instrument to manipulate the tissue such that movement of the receivers relative to the shafts is resisted and/or prevented. Surgical instruments, implants, systems and methods are disclosed.