Corner-Lock Implant Stitching for Stable Biotextile Pores
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Solution Overview
Problem
Existing sewing techniques for biotextiles fail to prevent stretching and deformation of pores in biologic substrate materials, leading to potential serious conditions like tissue herniation.
Innovation Solution
Implementing corner-lock stitch patterns with overlapping thread interlace points and overlays to enhance the stability and integrity of the stitch patterns, forming meshes that resist deformation and maintain pore shape under tension.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional lockstitch patterns are used in biotextiles, then the stitching process is simple and quick, but the pores stretch and deform under tension causing tissue herniation
Solution Approach 1:
The stitch pattern is segmented into multiple sequential operations: first stitch pattern creation, then overlay stitch pattern creation with interlacing. This segmentation allows each layer to contribute specifically to pore stability while maintaining manageable complexity in each individual stitching operation.
Solution Approach 2:
The invention transitions from a single-layer stitch pattern to a multi-layer overlay structure. The second stitch pattern is laid over the first pattern at a different orientation, creating a two-dimensional overlay system that locks pores in multiple directions simultaneously, preventing deformation that a single pattern cannot resist.
2Strength
If standard stitching techniques are used, then the manufacturing process is simple, but the mesh lacks resistance to deformation and stretching
Solution Approach 1:
The first stitch pattern is created preliminarily to establish the basic mesh structure and pore geometry. This preliminary action creates a foundation that the second overlay pattern can then reinforce, allowing the mesh to gain enhanced strength through the subsequent overlay operation rather than requiring all strength features to be built in a single complex pass.
3Stability of the object's composition
If single-layer stitch patterns are used, then the stitching operation is straightforward, but the pores cannot resist pulling apart and deformation
Solution Approach 1:
Two separate stitch patterns are merged through the overlay process, with the second pattern interlacing with the first. This merging combines the structural benefits of both patterns, creating a unified mesh structure where the interaction between layers provides enhanced pore stability that neither pattern could achieve alone.
Solution Approach 2:
The stitch pattern structure functions as a composite system with two distinct layers having different orientations and functions. The first pattern provides baseline structural integrity while the second overlay pattern provides reinforcement, similar to how composite materials combine different substances to achieve superior properties that individual materials cannot provide alone.
Data Source
AI summary
Implants including stitching patterns that overlap to produce a corner-locked stitch pattern. An implant may include a substrate including a biocompatible material a reinforcing mesh sewn into the substrate. The reinforcing mesh may include a corner-stitch pattern that includes a first lock-stitch pattern and a second lock-stitch pattern. The first lock-stitch pattern may include a first upper thread and a first lower thread that interlace at a first thread interlace point. The second lock-stitch pattern may include a second upper thread and a second lower thread that interlace at a second thread interlace point. The second lock-stitch pattern may overlap the first lock-stitch pattern such that the second upper thread and the second lower thread envelop the first upper thread and the first lower thread adjacent to the first thread interlace point and the second thread interlace point.