Researchers at Colorado State University have developed an innovative cylindrical device that, upon heating, deploys anchors in all directions. This unique mechanism provides precise and permanent anchoring into larger cylinders such as PVC pipes or intramedullary cavities of long bones, enabling selective control over device placement.
Shape-memory polymers (SMPs) have shown remarkable potential in various industries, from robotics to construction and sports wear. However, their application in anchoring inserts into sleeves, bone implants, or pivot control remains largely untapped. This technology bridges this gap by introducing a novel approach to anchoring and control through shape-memory activation.
Our device features a hollow cylindrical design with internally embedded anchors made of nitinol, a shape-memory alloy. Upon heating, these anchors deploy outward due to a crystallographic transition from martensite to austenite phases, creating a secure and precise anchoring mechanism. The device can be easily inserted into a designated area and activated through temperature elevation, allowing it to conform to the surrounding structure and provide reliable anchoring or controlled expansion. Controlled manufacturing can produce different activation temperatures, suitable for different applications. For a medical implant, the device can be kept below the activation temperature until the implant is disposed within the medullary cavity of the bone and the patient’s internal body temperature causes the anchors to deploy.
Available for Licensing
TRL: 5
Steven J Simske
Adam Morrone
Aly Hoeher
Aly.Hoeher@colostate.edu
970-491-7100