US 12016580

Here's a concise summary of US Patent 12016580:

US Patent 12016580

• Title: Single insertion delivery system for treating embolism and associated systems and methods

• Assignee: Inari Medical Inc [cite: The "Current Assignee" and "Original Assignee" are both listed as Inari Medical Inc.]

• Inventors: Richard Quick, Benjamin Edward Merritt, John Coleman Thress, Paul Lubock, Thomas M. Tu [cite: The inventors are listed as Richard Quick, Benjamin Edward Merritt, John Coleman Thress, Paul Lubock, Thomas M. Tu.]

• Filing Date: October 11, 2021 [cite: The filing date is listed as 2021-10-11.]

• Issue Date: June 25, 2024 [cite: The publication date and application granted date are both listed as 2024-06-25.]

• Abstract: Systems and methods for the intravascular treatment of clot material within a blood vessel of a human patient are disclosed. A method can include engaging an interventional device with clot material in a blood vessel and withdrawing the interventional device and a portion of the clot material through a guide catheter. In some embodiments, the catheter system includes an attachment/valve member coupled to a proximal portion of the guide catheter, and the method can include unsealing the attachment/valve member to facilitate withdrawing the interventional device through it without significant retention of clot material. The method can further include resealing and aspirating the guide catheter before advancing another interventional device to the clot material to again engage and remove clot material from the blood vessel.

• Plain-Language Overview of Independent Claims:

  • Independent Claim 1 (Method): This claim describes a method for treating clot material in a patient's blood vessel. It involves inserting a guide catheter, advancing an interventional device through it to engage the clot, and then retracting the device and clot into the guide catheter. Crucially, the method includes an attachment member connected to the guide catheter that can be unsealed to allow the interventional device to pass through without leaving much clot material behind. After withdrawal, the attachment member is resealed, and the guide catheter is aspirated (suctioned) to remove any remaining clot or fluid. This allows for repeated deployments of the interventional device without removing the entire guide catheter from the patient.
  • Independent Claim 11 (Method): Similar to Claim 1, this method also focuses on intravascular clot treatment using a guide catheter and an interventional device. It specifies inserting a guide catheter with an attachment member, deploying an interventional device to engage clot material, and withdrawing the device with the captured clot into the guide catheter. A key aspect is actuating the attachment member to expand a lumen through which the interventional device passes, preventing clot retention. Following withdrawal, the attachment member is returned to a sealed state, and the guide catheter is aspirated to clear any residual material, enabling subsequent passes without full guide catheter removal.
  • Independent Claim 18 (System): This claim describes a system for treating clot material. The system includes a guide catheter, a delivery sheath, an interventional device, a retraction and aspiration (RA) device, and an attachment member. The attachment member is coupled to the guide catheter and designed to be actuated between a first (sealed) configuration and a second (unsealed) configuration. In the unsealed configuration, a continuous lumen of consistent diameter is formed through the attachment member and the guide catheter, allowing the interventional device to pass through without stripping clot material. The RA device is configured to retract the delivery sheath and interventional device while simultaneously aspirating through the guide catheter.

• Litigation Status: The patent is currently active. [cite: The legal status is listed as "Active".] There is a PTAB case IPR2025-01264 filed, which is pending and instituted. [cite: The patent family has litigation, specifically "PTAB case IPR2025-01264 filed (Pending - Instituted)".] As of April 26, 2026, no specific dockets directly pertaining to US Patent 12016580 have been found in the 2026 CAFC dockets.