AECOM has been granted a patent for an expandable implant system to treat aneurysms. The system includes a chain of expandable polymer foam elements or an elongated foam coupled to a backbone. It also includes a delivery system with a microcatheter, lumen-reducing collar, pushing element, and tubular sheath. The implantable system uses shape memory polymer foam and adhesive to fill an anatomical void. GlobalData’s report on AECOM gives a 360-degree view of the company including its patenting strategy. Buy the report here.
According to GlobalData’s company profile on AECOM, Forward inferencing was a key innovation area identified from patents. AECOM's grant share as of September 2023 was 56%. Grant share is based on the ratio of number of grants to total number of patents.
Expandable implant system for endovascular embolization of aneurysms
A recently granted patent (Publication Number: US11771435B2) describes an implantable system designed to fill an anatomic void. The system consists of a carrier element and a shape memory polymer foam that covers a majority of the carrier element. The shape memory polymer foam has primary and secondary shapes and is composed of first and second shape memory polymer portions. The foam is capable of pivoting the first shape memory polymer portion about the second shape memory polymer portion in both its primary and secondary shapes. The foam is adhered to the carrier element using an adhesive, which includes an additional polymer.
In one embodiment, the shape memory polymer foam has a higher modulus in its secondary shape compared to its primary shape. The foam is also greater than 5 cm in length. The carrier element includes a coil, and the first and second shape memory polymer portions are separated from each other, with no other shape memory polymer portion in between. The adhesive used to attach the foam to the carrier element includes urethane.
The patent also describes variations of the system, including the use of a radiopaque shape memory polymer foam and a carrier element made of polymer. The shape memory polymer foam has a glass transition temperature below 37.7 degrees Celsius. The first and second shape memory polymer portions can be monolithic with each other.
Another embodiment of the system includes an additional shape memory polymer foam on the carrier element, with an adhesive coupling the additional foam to the carrier element. The additional foam has its own primary and secondary shapes and first and second shape memory polymer portions. There is a space along the carrier element between the shape memory polymer foam and the additional foam. The adhesive used in this embodiment includes a thermosetting shape memory polymer.
Overall, this patent presents an implantable system utilizing shape memory polymer foam to fill an anatomic void. The system offers flexibility in shape and modulus, with the foam capable of pivoting between different shapes. The use of an adhesive with an additional polymer enhances the attachment of the foam to the carrier element. The patent also explores variations of the system, including the use of radiopaque foam and multiple foam layers.