Silk Road Medical has filed a patent for a stent design that utilizes pattern variations to achieve desired flexibility and conformity to vasculature. The stent includes an elongated tubular body with multiple strut rings and bridges of varying lengths, which are defined by a polynomial function based on the length of the stent. This design aims to treat atherosclerosis in arterial vasculature. GlobalData’s report on Silk Road Medical gives a 360-degree view of the company including its patenting strategy. Buy the report here.
According to GlobalData’s company profile on Silk Road Medical, cardiothoracic surgery instruments was a key innovation area identified from patents. Silk Road Medical's grant share as of June 2023 was 1%. Grant share is based on the ratio of number of grants to total number of patents.
A stent with variable flexibility and conformity to vasculature
A recently filed patent (Publication Number: US20230165696A1) describes a stent designed for treating atherosclerosis in arterial vasculature. The stent consists of an elongated tubular body that can transition between a collapsed configuration and an expanded configuration. The tubular body includes multiple strut rings that extend circumferentially around a longitudinal axis. These strut rings are connected by bridges, with each set of bridges having different lengths. The lengths of the bridges are determined by a polynomial function based on the length of the stent.
The patent also describes the specific configuration of the elongated tubular body. It includes a proximal section with at least one circumferential row of open cells, a middle section with at least one circumferential row of closed cells, and a distal section with at least one circumferential row of open cells. The bridges connecting the strut rings have a non-linear shape, and their lengths increase along the proximal and middle sections of the stent.
The patent further includes a method for using the stent to treat atherosclerosis. The method involves collapsing the stent into a collapsed configuration for insertion into arterial vasculature and then expanding it into an expanded configuration to conform to the shape of the arteries.
Overall, this patent introduces a stent design that aims to effectively treat atherosclerosis in arterial vasculature. The unique configuration of the elongated tubular body, with its combination of open and closed cells, along with the varying lengths and non-linear shapes of the bridges, may provide improved performance and outcomes for patients with atherosclerosis.