Pivoting Rupturing Tool for Angled Bone Tunnel Widening
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Solution Overview
Problem
Existing tendon reconstruction surgeries face challenges in creating angled bone tunnels that provide sufficient bone housing for tendon reinsertion, as anchorings often only offer surface compression, hindering the healing process and tendon-bone integration.
Innovation Solution
A rupturing tool with a tubular main body and a rupturing assembly that allows for the creation of angled bone tunnels with elongated intraarticular outlet openings, utilizing a pivoting mechanism to ensure precise and reproducible widening of the tunnel opening, suitable for housing the tendon or augmentation tissue.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If anchorings are inserted into the bone to provide surface compression at the tendon insertion area, then the tendon can be repositioned and fixed, but the healing process is hindered due to reduced bone housing area
Solution Approach 1:
The invention divides the bone tunnel into two distinct segments: a first segment created by a drill and a second segment created by a rupturing element. This segmentation allows each segment to serve a specific function - the first segment provides structural access while the second segment creates the enlarged bone housing needed for tendon healing, thereby resolving the contradiction between fixation strength and bone housing area.
Solution Approach 2:
The rupturing element creates an enlarged bone housing by expanding the bone tunnel in a radial dimension rather than just along the longitudinal axis. This dimensional change provides additional bone housing area perpendicular to the tunnel path, allowing sufficient space for tendon reinsertion and healing while maintaining the original tunnel access path.
2Ease of manufacture
If a straight bone tunnel is created for tendon reinsertion, then the surgical procedure is simplified, but the intraarticular outlet opening is insufficient for proper tendon housing
Solution Approach 1:
The bone tunnel creation process is segmented into two distinct operations: first, a straight tunnel is created using a drill for simple access; second, a rupturing element is inserted to enlarge the intraarticular outlet opening. This segmentation maintains the simplicity of the initial drilling step while adding a subsequent step that provides the necessary outlet area for tendon housing.
Solution Approach 2:
The straight bone tunnel is created as a preliminary action before the rupturing element is used to enlarge the outlet opening. This preliminary tunnel provides the access path needed to deliver the rupturing element to the target location, where it then creates the enlarged housing space required for proper tendon reinsertion.
3Area of stationary object
If an angled bone tunnel is created to provide adequate bone housing, then tendon reinsertion is improved, but the surgical procedure becomes more complex
Solution Approach 1:
The rupturing element is designed with a pivot body that can rotate about a pivot axis, allowing it to adapt to angled bone tunnels dynamically. This rotational capability enables the rupturing element to follow the angled path of the bone tunnel while maintaining its function of creating an enlarged outlet opening, thereby providing adequate bone housing without requiring complex fixed-angle instruments.
Solution Approach 2:
The angle between the drill axis and the rupturing element axis can be adjusted by modifying the angle between the drill and the guide. This parameter change allows the system to adapt to different anatomical configurations and tunnel angles while maintaining a relatively simple instrument design, as the angle adjustment is achieved through the relationship between components rather than complex internal mechanisms.
4Area of stationary object
If a rupturing element with rotary movement is used to widen the bone tunnel, then the intraarticular outlet opening is sufficiently enlarged, but the tool complexity increases
Solution Approach 1:
The rupturing element combines multiple functions into a single component: it serves as both the guide for the bone tunnel and the active element that creates the enlarged outlet opening through its rotary movement. This merging of functions reduces the need for separate instruments for tunnel creation and outlet enlargement, thereby reducing overall tool complexity while achieving sufficient outlet opening area.
Data Source
Figure 1A~1B
Figure 1C~1D
Figure 1E~1G
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 for the creation of bone tunnels suitable for the anatomical reconstruction of tendons, for example, for the creation of bone tunnels in interventions for reinserting the supraspinatus muscle tendon of the rotator cuff in the shoulder joint.