公开(公告)号：US20180289924A1

公开(公告)日：2018-10-11

申请号：US15769592

申请日：2016-10-28

Applicant: Duke University

Inventor： Vrad W. Levering ,  Changyong Cao ,  Gabriel P. Lopez ,  Xuanhe Zhao ,  Howard Levinson

IPC: A61M25/00

Abstract: Catheters for debonding fouling agents from an interior surface thereof and related methods are disclosed. According to an aspect, a catheter includes a lumen defining a flexible, interior surface that extends substantially along a length of the lumen for contacting a biological material. The catheter also includes cavities extending along the length and positioned within the lumen adjacent to the surface. The cavities each define a cavity opening. The catheter also includes an inflation hub defining hub openings connected to respective cavity openings. The inflation hub defines a pump port configured to interface with a pump. The inflation hub defines one or more fluid pathways that extend between the hub openings and the pump port for permitting flow of gas between the pump and the cavities.

公开(公告)号：US20170347460A1

公开(公告)日：2017-11-30

申请号：US15230588

申请日：2016-08-08

Applicant: Duke University

Inventor： Changyong Cao ,  Yihao Zhou ,  Jeffrey T. Glass ,  Aaron D. Franklin

IPC: H05K3/12 ,  H05K1/02 ,  H05K1/09 ,  H05K3/00

CPC classification number: H05K1/097 ,  H05K1/0283 ,  H05K3/14 ,  H05K2201/026 ,  H05K2201/0323 ,  H05K2203/0271

Abstract: Methods of forming an electrically conductive layer on a flexible substrate, such as a stretchable electrode, by aerosol jet printing on the flexible substrate while the substrate is strained. In general, a stretchable substrate is initially deformed so that a first surface thereof is under tension. While the substrate is in the strained state, an ink is aerosol jet printed onto the first surface. The ink includes carbon nanotubes, and advantageously other materials such as reduced graphene oxide. Further, while the substrate is still in the strained state, the ink is cured after its application to the substrate. Thereafter, the strain is decreased so that the stretchable substrate contracts, self-organizing into a configuration wherein the substrate's first surface, with the cured ink thereon, has a wrinkled profile. The flexible substrate can then be mechanically expanded and contracted, advantageously repeatedly, with the ink layer maintaining electrical conductivity.