Spinal Manipulation Device with Floating Auto-Locking Pivot
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Solution Overview
Problem
Spinal fixation procedures face challenges in accurately and efficiently manipulating spinal constructs due to crowded working areas and difficulties in positioning and maintaining instrumentation, particularly in achieving desired therapeutic effects through compression or distraction.
Innovation Solution
A spinal manipulation device with modular components and a floating, auto-locking pivot point, allowing for flexible engagement with adjacent surgical sleeves, and an actuation mechanism that enables precise pivoting and locking of drive and coupling members to optimize force delivery during compression or distraction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional spinal fixation instrumentation is used in crowded working areas, then the procedure can be performed with standard equipment, but the instrumentation becomes difficult to position, adjust, and maintain at desired locations
Solution Approach 1:
The manipulation device is divided into separate modular components including a drive member with elongate shaft, a coupling member, and an actuation mechanism. These segments can be independently positioned and adjusted within the crowded surgical field, allowing each component to be optimized for its specific function while maintaining overall system coherence.
Solution Approach 2:
The device incorporates a floating pivot point that can dynamically adjust its position and orientation during the procedure. This dynamic capability allows the instrumentation to adapt to varying anatomical conditions and maintain optimal positioning despite the constraints of crowded working areas.
2Reliability
If compression or distraction manipulation is performed on spinal constructs, then desired therapeutic effects can be achieved, but the crowded working area makes manipulation difficult and time-consuming
Solution Approach 1:
The drive member is pre-configured with an elongate shaft designed to be disposed within the inner lumen of surgical sleeves before the manipulation procedure begins. This preliminary positioning eliminates the need for time-consuming adjustments during the actual compression or distraction maneuver, allowing the surgeon to immediately apply therapeutic forces.
Solution Approach 2:
The coupling member acts as an intermediary between the actuation mechanism and the surgical sleeves. It transmits forces from the actuation mechanism to the spinal construct while maintaining proper spatial relationships, enabling efficient force delivery without requiring direct manipulation in the crowded working area.
3Adaptability or versatility
If modular components are used to engage device with adjacent surgical sleeves, then flexibility and versatility in positioning are improved, but device complexity increases
Solution Approach 1:
The coupling member is designed with universal engagement capabilities that allow it to interface with various configurations of surgical sleeves and anchoring devices. This multi-functional design provides adaptability across different spinal fixation scenarios without requiring multiple specialized components, thereby limiting the increase in overall device complexity.
4Ease of operation
If a floating and auto-locking pivot point is incorporated to change arc of rotation, then ease of operation improves, but device complexity increases
Solution Approach 1:
The pivot point incorporates an auto-locking mechanism that automatically secures the desired arc of rotation without requiring additional manual intervention or complex locking procedures. The mechanism self-regulates during manipulation, maintaining the selected configuration while minimizing the need for operator involvement in adjusting device complexity.
Data Source
AI summary
A system and device for manipulating a spinal construct is provided. For example, the manipulation device can include a drive member to be disposed within a first surgical sleeve extending from a first vertebra, and a coupling member positioned adjacent a second surgical sleeve. In one embodiment, at least one of the drive member and the coupling member can be releasably engaged to an actuation mechanism. In one aspect, the actuation mechanism can include a floating and/or auto-locking pivot point thereby allowing a user to quickly and easily position the manipulation device relative to the adjacent surgical sleeves. Additionally, a method of manipulating spinal constructs is also provided.