Implant Retaining Loop and Guide Wire Extension for Bone Block Fixation
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Solution Overview
Problem
Current methods for treating anterior-inferior glenohumeral instability, particularly with bony Bankart lesions, are challenging due to the difficulty in manipulating and securing bone blocks within the body using graspers and sutures, leading to increased time and risk of recurrent instability.
Innovation Solution
A surgical assembly and method utilizing guidewires and suture loops with locking components to reposition and secure a bone block within the body, allowing for precise placement and fixation against the glenoid using a cannula and threaded screws.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If graspers and sutures are used to manipulate and secure the bone block within the body, then the bone block can be repositioned and fixed, but the procedure becomes time-consuming and difficult to perform
Solution Approach 1:
The patent extracts the bone block manipulation from the complex grasper-suture system and replaces it with a dedicated retrieval device that has a simple grasping geometry designed to engage the bone block directly. This extraction simplifies the toolset and reduces procedural time while maintaining fixation reliability.
Solution Approach 2:
The patent introduces a retrieval device as an intermediary tool between the surgeon and the bone block. This mediator device provides optimized mechanical engagement with the bone block, making manipulation easier and faster compared to using standard graspers and sutures directly.
2Adaptability or versatility
If standard graspers and sutures are used for bone block manipulation, then the procedure can be performed with common surgical tools, but the ease of operation is reduced due to difficulty in manipulation
Solution Approach 1:
The retrieval device is segmented into distinct functional components: a grasping geometry for bone block engagement, a shaft for transmission, and a handle for surgeon control. This segmentation allows each component to be optimized for its specific function, improving overall ease of operation while remaining compatible with standard surgical workflows.
3Manufacturing precision
If multiple components (guidewires, suture loops, locking components) are used for bone block placement, then the precision of placement is improved, but the device complexity increases
Solution Approach 1:
The patent merges multiple functions into an integrated surgical assembly where guidewires, suture loops, and locking components work together as a coordinated system. This merging maintains high placement precision through the guided mechanism while reducing the operational complexity compared to using separate, uncoordinated tools.
Solution Approach 2:
The guidewires and suture loops are pre-positioned and pre-configured before bone block insertion. This preliminary action establishes the precise placement pathway and fixation mechanism in advance, ensuring accurate bone block positioning while simplifying the actual insertion procedure.
Data Source
AI summary
A surgical assembly, the assembly including a first guidewire, a second guidewire, in which each of the first guidewire and the second guidewire are configured to be received by a bone block, a first suture loop, a second suture loop, a first locking component, and a second locking component, in which the first locking component is coupled to the first suture loop and the second locking component is coupled to the second suture loop.