Angled Bone Tunnel Rupturing Tool for Anatomical Tendon Repair
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Solution Overview
Problem
Existing rupturing tools lack the rigidity and flexibility to create angled bone tunnels suitable for the anatomical reconstruction of tendons and ligaments, leading to inadequate tendon and ligament reconstructions with high failure rates and long-term complications.
Innovation Solution
A rupturing tool with a longitudinal body, a distal tip forming an angle with the main body, and a rupturing assembly that allows the rupturing element to change orientation between two axes, providing rigidity and flexibility for creating angled bone tunnels that mimic the original anatomical areas of tendon and ligament insertion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If flexible rupturing tools with curved trajectories are used to create bone tunnels, then the ability to access difficult anatomical areas is improved, but the rigidity required for carving bone in the second position is lost
Solution Approach 1:
The rupturing tool employs a dynamic design where the rupturing element can change its orientation from a first longitudinal axis to a second longitudinal axis that forms an angle with the first axis. This dynamic repositioning capability allows the tool to adapt to different anatomical trajectories while maintaining the rigidity needed for effective bone carving in the angled second position.
Solution Approach 2:
The tool is divided into distinct segments: a main body oriented along the first longitudinal axis, and a distal tip oriented along the second longitudinal axis. This segmentation allows each part to fulfill its specific function - the main body provides structural support and rigidity, while the distal tip enables angled bone tunnel creation, resolving the contradiction between overall rigidity and localized adaptability.
2Ease of operation
If screws are used to fix tendons to bone, then tendon repositioning is achieved, but surface compression is reduced and healing is hindered
Solution Approach 1:
Before tendon fixation, the tool creates a bone housing along the original anatomical area of insertion by carving bone tissue. This preliminary action prepares the bone bed to receive the tendon, ensuring that when the tendon is repositioned and fixed, it has optimal contact with the carved bone surface, thereby promoting healing while maintaining ease of repositioning.
3Productivity
If multi-tunnel arthroscopic guides are used for ACL reconstruction, then bone tunnels can be created, but the ability to access tibia from inside out and restore original twisting biomechanics is lost
Solution Approach 1:
The rupturing element's ability to dynamically change orientation from the first longitudinal axis to the second longitudinal axis enables the tool to create bone tunnels that follow the original anatomical twisting path of the ACL. This dynamic repositioning restores the natural biomechanics of the ligament while maintaining efficient tunnel creation capability.
Solution Approach 2:
The tool changes the orientation parameter of the rupturing element from aligned with the first longitudinal axis to aligned with the second longitudinal axis, forming an angle with the first axis. This parameter change enables the creation of angled bone tunnels that accurately replicate the original ACL insertion anatomy, improving adaptability without sacrificing productivity.
Data Source
AI summary
The present invention relates to a rupturing tool for surgical interventions and to a rupturing system comprising the rupturing tool and a rupturing movement generator device. The rupturing tool and system are intended for the field of traumatology, particularly to the creation of bone tunnels suitable for the proper anatomical reconstruction of tendons and ligaments; for example, for the creation of bone tunnels in interventions for reinserting the supraspinatus muscle tendon of the rotator cuff of the shoulder joint or in interventions for reconstructing the anterior cruciate ligament (ACL) of the knee joint.