Knotless Orthopedic Fixation Fastener for Secure Suture Compression
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Solution Overview
Problem
Existing orthopedic fixation fasteners rely on knot quality for effectiveness, which can compromise surgical outcomes due to potential slippage and uneven tissue pressure.
Innovation Solution
An orthopedic fixation fastener design that secures sutures without knotting, using a fixation fastener body and a detachable fixator to compress and fix sutures, distributing pressure evenly over a larger surface area and allowing for post-assembly adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If knotting is used to secure the suture, then the suture can be fixed to the tissue, but the effectiveness depends on knot quality which can lead to slippage and uneven tissue pressure
Solution Approach 1:
The patent extracts and eliminates the knotting operation from the suture fixation process. Instead of requiring the surgeon to tie a knot, the device uses a mechanical compression mechanism with a compression member that directly secures the suture to the tissue, removing the source of potential slippage and uneven pressure associated with manual knotting
Solution Approach 2:
The device enables self-service fixation where the compression member automatically secures the suture through mechanical compression when the fixation fastener is pressed against the tissue. The suture passes through the compression member and is held in place by the compression force, eliminating the need for surgical intervention to tie knots
2Reliability
If knotting is used to secure the suture, then the suture can be fixed to the tissue, but it causes uneven tissue pressure and potential tissue damage
Solution Approach 1:
The patent applies local quality by distributing the compression force through a compression member that contacts the suture at multiple points. The compression member has a specific geometry with contact surfaces that apply pressure evenly across the suture and underlying tissue, preventing localized stress concentrations that would cause tissue damage
Solution Approach 2:
The device transitions from one-dimensional knot securing to a multi-dimensional compression mechanism. The compression member applies force in multiple directions simultaneously, distributing the load across a larger surface area of the tissue and suture interface, thereby preventing uneven pressure and tissue damage
3Reliability
If a compression member is added to compress and fix the suture, then suture slippage is prevented, but the device complexity increases
Solution Approach 1:
The patent merges the compression member with the fixation fastener body into an integrated structure. The compression member is formed as part of the fixation fastener, eliminating the need for separate components and reducing overall device complexity while maintaining effective suture compression and slippage prevention
Solution Approach 2:
The compression member serves multiple functions: it compresses the suture against the tissue, prevents suture slippage, distributes pressure evenly, and provides a secure fixation point. This multi-functionality reduces the need for additional separate components, thereby reducing device complexity
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Prevents suture slippage and reduces uneven tissue growth by evenly distributing pressure, eliminating the need for knotting and enabling easy adjustment after assembly.
Implementation Method 1
when the fixator is engaged with the fixation fastener body, at least one suture is compressed and fixed between them
Data Source
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AI summary
The present disclosure provides an orthopedic fixation fastener for securing a suture, including a fixation fastener body (1) and a fixator (2). The fixation fastener body (1) includes a central portion (11), a first fixing portion (12), and a second fixing portion (13), which are correspondingly connected to opposite sides of the central portion (11). Each of the first fixing portion (12) and second fixing portion (13) includes a suture hole (121, 131) extending through a top surface (14) and a bottom surface (15), through which the suture passes. The fixator (2) includes a fixing structure (21) detachably connectable to the fixation fastener body (1), such that when the fixator (2) is engaged, the suture is accommodated and fixed between the fixator (2) and the fixation fastener body (1) without requiring additional knotting for fixation.