US 12156669

US patent 12156669 (US12156669B2) is titled "Single insertion delivery system for treating embolism and associated systems and methods". It was assigned to Inari Medical Inc. The inventors are Richard Quick, Benjamin Edward Merritt, Paul Lubock, and John Coleman Thress. The patent was filed on July 25, 2023, and issued on December 3, 2024.

The abstract describes systems and methods for the intravascular treatment of clot material within a human patient's blood vessel. The method involves engaging an interventional device of a catheter system with clot material and withdrawing it through a guide catheter. In some embodiments, the catheter system includes an attachment/valve member coupled to the guide catheter's proximal portion. The method can include unsealing this attachment/valve member to facilitate withdrawing the interventional device without significant retention of clot material. The guide catheter can then be resealed and aspirated before a new interventional device is advanced to engage and remove more clot material.

Overview of Independent Claims:
I am unable to provide a plain-language overview of each independent claim as the claims section was not present in the provided patent text.

Legal Status and Litigation:
The patent is currently active, with an anticipated expiration date of January 25, 2039.

The patent family is involved in litigation:

• A PTAB case, IPR2026-00169, has been filed and is currently pending.
• A US case (5:24-cv-03117) was filed in the California Northern District Court.
• The first worldwide family litigation has also been filed.