Movable Pedicle Rod Clamp for Spinal Alignment
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Solution Overview
Problem
Current spinal correction procedures lack options for precise positioning and orientation of pedicle rods, leading to inadequate spinal stability during and after surgery.
Innovation Solution
A pedicle rod clamp device with an adjustable design, featuring an arm, upper clamp, and lower clamp that are rotationally and translationally movable, allowing for secure coupling and alignment of pedicle rods, and a collet closure mechanism for easy installation and adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional fixed pedicle rod connection devices are used, then the structure is simple, but the positioning and orientation options are limited
Solution Approach 1:
The clamp device incorporates movable clamps that can rotate and translate along the rod, transforming a static connection device into a dynamic one capable of multiple positioning and orientation configurations while maintaining structural simplicity
Solution Approach 2:
The device is divided into separate functional components (arm, upper clamp, lower clamp, collet mechanism) that can independently move and adjust, allowing each segment to contribute to the overall adaptability without requiring complete redesign of the entire structure
2Reliability
If multiple pedicle rods are connected for spinal stability, then spinal stability is improved, but the complexity of securing and positioning increases
Solution Approach 1:
The upper and lower clamps are nested within the arm structure, and the collet mechanism is nested within the clamps, creating a compact multi-functional device that can secure multiple rods without requiring separate external components for each function
Solution Approach 2:
The collet mechanism automatically closes and secures the clamps to the rods through rotational motion, and the clamps self-adjust to maintain proper positioning, reducing the need for additional manual securing operations and simplifying the overall connection process
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
The device provides enhanced options for positioning and securing pedicle rods, improving spinal stability and reducing surgical artifacts by allowing for customizable support and secure fixation of pedicle rods.
Implementation Method 1
a collet closure mechanism for easy installation and adjustment... further rotation of a nut causing the pedicle rod to be emplaced and further rotation of the nut closes the clamping space
Data Source
AI summary
An enhanced pedicle rod clamp device for connecting two or more pedicle rods in spinal surgery is disclosed. The device may include an arm, an upper clamp, and a lower clamp, which are configured for coupling to a pedicle rod. The upper clamp may be coupled to the arm, and the lower clamp may be coupled to the upper clamp. The upper clamp may be rotationally and/or translationally movable with respect to at least one of the arm and the lower clamp. The lower clamp may be rotationally and/or translationally movable with respect to at least one of the arm and the upper clamp.