Manual T-Shape Suture Tensioning Device for ACL Reconstruction
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Solution Overview
Problem
Current methods for tensioning soft tissue grafts during ACL reconstruction require additional assistance and are cumbersome, lacking a straightforward, adjustable, and reproducible system for applying even tension, which complicates the fixation process.
Innovation Solution
A manual suture tensioning device with a T-shape design featuring lateral and primary suture cleats, a finger guard, and a driver, allowing for adjustable and repeatable tension application without additional fixturing or bone surface modification, facilitating easy installation of fixation implants.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional tensioning methods are used during ACL reconstruction, then additional assistance is required and the process becomes cumbersome, but the device complexity and ease of operation are improved by providing a standalone manual tensioning device
Solution Approach 1:
The tensioning device is divided into distinct functional segments: a bar for applying tension, a finger guard for operator protection and guidance, and a suture cleat for securing the graft. This segmentation allows each component to perform its specific function efficiently while keeping the overall device simple and manageable for a single operator.
Solution Approach 2:
The manual tensioning device is designed to be self-contained and self-operating. The bar itself serves as both the tensioning element and the handle, eliminating the need for separate fixation fixtures or additional tools. The device performs all necessary functions (tensioning, securing, and fixation installation) through manual operation alone, making it self-sufficient during the surgical procedure.
2Reliability
If additional fixturing and bone surface modification are used, then tensioning capability is improved, but the ease of operation and surgical time are worsened by requiring additional steps
Solution Approach 1:
The suture cleat is pre-configured with槽 (grooves) that receive and secure the suture before tensioning begins. This preliminary arrangement of the suture on the cleat eliminates the need for additional fixation fixtures or bone surface modifications during the tensioning phase, allowing the surgeon to immediately apply tension and proceed with the procedure without time-consuming preparatory steps.
3Manufacturing precision
If a comprehensive tensioning system with multiple components is used, then tensioning precision is improved, but the device complexity and ease of operation are worsened
Solution Approach 1:
The bar features a localized finger guard at the grip area that provides precise tactile feedback and control points for the operator's fingers. This localized enhancement of the grip interface allows for precise control of tension application without requiring the entire device to be complex. The suture cleat also has specifically shaped槽 (grooves) that locally concentrate the suture control function, enabling precise tensioning through simple geometry rather than complex mechanisms.
Data Source
AI summary
A soft tissue tensioning system comprises a manual suture tensioning device having a bar and a finger guard which is orthogonal to the bar. A lateral suture cleat is disposed on each lateral end of the bar, and a primary suture cleat extends about a top and a bottom of each of the opposed lateral ends of the bar.