Partly Resorbable Tissue Clip With Bioresorbable Teeth
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Solution Overview
Problem
Partly resorbable tissue clips face challenges in maintaining mechanical integrity and avoiding fragmentation during resorption, leading to potential tissue damage and the need for additional surgical interventions for removal.
Innovation Solution
Designing tissue clips with bioresorbable gripping teeth and force deflecting elements that weaken and detach from tissue as they resorb, while maintaining structural integrity through non-bioresorbable components for mechanical strength, allowing for automatic detachment and elimination without further surgical intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If tissue clips are made from non-bioresorbable materials like titanium or nickel-titanium alloys to maintain mechanical strength and clamping force, then the reliability and mechanical properties are improved, but the device complexity increases due to the need for second surgical interventions to remove the clips after tissue healing
Solution Approach 1:
The patent applies parameter changes by transitioning the material composition from non-bioresorbable to bioresorbable materials, and by controlling the degradation rate parameters to match the tissue healing timeline. This allows the clip to maintain mechanical strength during the critical healing period while automatically degrading and eliminating the need for removal surgery.
Solution Approach 2:
The patent implements the disposable principle by designing a tissue clip that is intentionally designed to be temporary and self-eliminating. The bioresorbable clip performs its function during the healing period and then degrades naturally in the body, eliminating the need for retrieval and avoiding second surgical interventions.
2Ease of operation
If tissue clips are made from bioresorbable materials to eliminate the need for second surgical interventions, then the ease of operation is improved, but the mechanical strength and clamping force are reduced due to material limitations
Solution Approach 1:
The patent applies composite materials by combining bioresorbable polymers with reinforcing structures or hybrid material approaches. This allows the clip to achieve sufficient mechanical strength for clamping while maintaining the bioresorbable property that enables automatic elimination after tissue healing.
Solution Approach 2:
The patent applies local quality by optimizing the material distribution and structural design to concentrate mechanical strength where most needed (at the clamping surfaces and hinge regions) while allowing other areas to degrade. This enables the clip to maintain adequate clamping force during the healing period while ensuring complete resorption afterward.
3Loss of substance
If completely bioresorbable tissue clips are used to allow natural body elimination, then the loss of substance is reduced by avoiding removal surgery, but the reliability deteriorates due to fragmentation and disintegration into individual metal fragments
Solution Approach 1:
The patent applies segmentation by designing the clip structure to break down into controlled, non-harmful segments as it degrades. Rather than fragmenting randomly into sharp metal pieces, the clip is designed to disintegrate into biocompatible particles or fragments that are safely eliminated by the body's natural processes.
Solution Approach 2:
The patent converts the potential harm of fragmentation into a benefit by designing the degradation process to produce non-harmful breakdown products. The bioresorbable material is selected and engineered to degrade into biocompatible substances that are safely absorbed or eliminated by the body, turning what could be a harmful fragmentation process into a beneficial self-elimination mechanism.
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
Ensures reliable stapling with reduced clamping force over time, preventing tissue damage and eliminating the need for secondary surgical interventions by maintaining the tissue clip in one piece and allowing natural body elimination.
Implementation Method 1
the clamping force which anchors the gripping teeth in the tissue is applied automatically by means of a spring effect
Implementation Method 2
the preloaded tissue clip, when applied to the tissue, automatically anchors itself in the tissue due to the spring effect
Implementation Method 3
as a result of resorption of a resorbable portion of the tissue clip the clamping effect of the tissue clip decreases over time
Data Source
AI summary
A partly resorbable tissue clip for stapling tissue includes at least one gripping tooth that grips the tissue, at least one force deflecting element that is equipped with at least one gripping tooth, and at least one spring element that is connected to the at least one force deflecting element. The at least one gripping tooth or a portion of the at least one force deflecting element or of at least one of the force deflecting elements is made of bioresorbable material.