US Patent Issued on Oct. 28 for "Composite positive and negative Poisson's ratio materials for medical devices" (Nevada Inventor)

ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,453,803, issued on Oct. 28.

"Composite positive and negative Poisson's ratio materials for medical devices" was invented by Joon Bu Park (Las Vegas).

According to the abstract* released by the U.S. Patent & Trademark Office: "A stent for insertion into a vessel of a patient includes an inner tube comprising a positive Poisson's ratio (PPR) material and defining a lumen extending along a longitudinal axis of the stent; and an outer tube comprising a negative Poisson's ratio (NPR) foam material and disposed around an entirety of the inner tube, the outer tube extending along the longitudinal axis of the stent. The stent is configured to exhibit an auxetic behavior in response to a defo...