David R Widomski, Steven W Opolski, Andrzej J Chanduszko, Carol A Devellian: Inflatable occluder. NMT Medical, Kirkpatrick & Lockhart Nicholson Graham, December 29, 2005: US20050288706-A1

An implant for occluding a septal defect, such as a patent foramen ovale (PFO), and methods of delivering the implant are described. The implant includes a scaffold, at least one channel, and an injection port in fluid communication with the channels for inflating the scaffold.

Andrzej J Chanduszko, David R Widomski: Double coil occluder. NMT Medical, Wilmer Cutler Pickering Hale And Dorr, November 10, 2005: US20050251154-A1

An occluder that has a coil on one or both sides of a medical defect, particularly a septal defect such as a patent foramen ovale (PFO). Each coil can be formed as a tube that is hollow, with or without a closed end. The tube can be delivered over a wire. For occluding a PFO, the coils can be design ...

David R Widomski, John A Wright: Multi-strand septal occluder. Kirkpatrick & Lockhart Nicholson Graham, September 28, 2006: US20060217760-A1

Disclosed herein are devices and methods for occluding intracardiac defects, such as a patent foramen ovale (PFO). The devices according to the invention have various features to improve flexibility and to enhance conformability of the device to the defect, including the incorporation of braided or ...

Andrzej J Chanduszko, David R Widomski, Carol A Devellian: Welding Systems Useful for Closure of Cardiac Openings. Wl Gore & Associates, November 17, 2011: US20110282345-A1

A welding element is provided for applying heat, chemicals, pressure, or any combination thereof to tissues inside a patient's body, e.g., a patent foramen ovale. In one aspect, the welding element is connected to a radio frequency energy source and includes an electrode and a locator. The locator f ...