Patented Textile-forming Technologies

Patented Textile-forming Technologies
Drop-end Technology One of Secant Group’s market-leading capabilities is our patented drop-end technology. We apply this technology to our woven tubular implants, which are designed to help surgeons repair or replace various damaged or diseased lumens such as blood vessels. In drop-end technology, warp ends are dropped circumferentially—rather than side by side—within the tapered region of a woven tubular implant. This helps the textile maintain a consistent density around the entire construct. Typically, warp ends are placed next to each other, but this can lead to inconsistent porosity and flexibility along the length of the woven tubular prosthesis. Secant Group’s superior method, however, preserves the integrity of these specific characteristics.
Drop-end Technology
Support Lattice for Cell Cultivation One of Secant Group’s patents is a method for cultivating living cells to form living tissue. This technology can be used, for example, as a tubular support lattice for a coronary bypass graft, or to treat various disorders. The surface of the graft is comprised of two different components. One is made of resilient interlaced filamentary members, which form a coarse mesh. The other is made of a plurality of braided, flexible filamentary members that form a fine mesh, which creates small interstices that provide a bed adapted for growing living cells in a 2D array across the cell cultivation lattice. The final construct is formed by braiding the coarse and fine mesh filaments with the resilient filamentary members, ultimately creating a continuous surface of living tissue.
Support Lattice for Cell Cultivation
Woven Tubular Graft with Flexibility Woven grafts have numerous advantages, including impermeability, low porosity, and small bulk—important characteristics for several medical procedures. However, woven textiles generally lack flexibility. This is because the warp and weft yarns interlace at 90-degree angles, causing them to lock into place. Secant Group can tune the flexibility within certain regions of a woven graft by weaving in radial flexibility, enabling the graft to expand and match the diameter and shape of the artery. For regions that require a set diameter but no radial expansion, we apply greater tension on the weft to keep the yarn from expanding. This patented technique can be used in regions adjacent to a vascular aneurysm, which need to maintain a set diameter so that the hydraulic pressure of the blood can relieve pressure on the aneurysm. The same techniques can be used for straight or bifurcated tubular grafts.
Woven Tubular Graft with Flexibility