System and method for percutaneous deployment of sensors
Inventors
Jagadeesan, Jayender • Bueno, Raphael • Lucas, Alan D. • Robinson, Timothy W. • Roth, Laurence A.
Assignees
The Brigham and Women's Hospital Inc • NAVIGATION SCIENCES Inc
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Publication Number
US-12708332-B2
Publication Date
2026-08-18
Expiration Date
Abstract
A method for tracking the location of a tissue mass comprising disposing a J-bar and electrical lead assembly within a needle cannula lumen; disposing the needle cannula within an outer cannula lumen; inserting the outer cannula into the anatomy of the patient; moving the needle cannula distally relative to the outer cannula; applying a force so that the J-bar and electrical lead assembly moves distally such that the fiducial sensor is anchored proximate to the tissue mass; moving the outer cannula and needle cannula proximally in concert, until the distal end of the outer cannula and the distal end of the needle cannula are disposed at the surface of the skin; applying a force so that the expandable basket moves distally, such that the expandable basket is disposed at the surface of the patient's skin with the electrical lead extending between the fiducial sensor and the expandable basket.
Core Innovation
The invention tracks the location of a tissue mass within an anatomical structure based on diagnostic images and a virtual model, together with a tissue-mounted fiducial sensor. The assembly comprises a fiducial sensor with at least one tissue mount, an expandable basket, and an electrical lead extending between them. A connector on the basket provides an electrical connection to supply electrical power through the lead to power the sensor.
A cannula-based deployment system includes an outer cannula, a needle cannula, and a pusher configured to deploy the assembly. The fiducial sensor and expandable basket each assume radially reduced and radially expanded profiles during deployment. The fiducial sensor is positioned proximate to the tissue mass, while the expandable basket is positioned at the skin surface or an outer surface of the anatomical structure.
Claims Coverage
The claim coverage includes three independent claims, comprising two method claims and one system claim, establishing three inventive features.
Image-based tracking with fiducial sensor and expandable basket at skin surface
Claim 1 covers tracking the location of a tissue mass based on diagnostic images and a virtual model using a deployment system comprising an outer cannula, a needle cannula, and a pusher to place a powered fiducial sensor proximate to the tissue mass and an expandable basket at the skin surface, with an electrical lead extending between them.
Cannula-carried tissue tracking system with powered fiducial assembly
Claim 11 covers a system comprising diagnostic images, a virtual model, and a cannula-based deployment system with an outer cannula, a needle cannula, and a pusher, together with a J-bar and electrical lead assembly comprising a radially expandable tissue-mounted fiducial sensor electrically connected to an expandable basket that supplies power to the sensor.
Image-based tracking with basket placement at anatomical structure surface
Claim 18 covers tracking the location of a tissue mass based on diagnostic images and a virtual model using a cannula-based deployment system to place a powered fiducial sensor proximate to the tissue mass and an expandable basket at an outer surface of the anatomical structure, with an electrical lead extending between them.
The independent claims cover methods and a system for tracking a tissue mass using diagnostic images and a virtual model, centered on an electrically powered fiducial sensor and an expandable basket deployed via a cannula assembly.
Stated Advantages
The disclosed tracking and feedback are described as accounting for tissue deformation and helping preserve resection margins.
Documented Applications
Image-guided tracking and resection of tissue masses using an anchored fiducial sensor registered to a virtual anatomy and resection-margin model.
Percutaneous placement of a fiducial sensor near a tissue mass with an expandable basket at the skin or outer surface of an anatomical structure.
Bronchoscopic sensor placement, airway mapping, and tissue-deformation tracking.
Surgical navigation and resection planning relative to airways and vessels, including pulmonary-vessel display, lesion marking, and guidance concerning resection margins and stapler placement.
Tissue mass tracking and resection in deformable organs, including lung, breast, liver, and kidney.
Planning assembly position using diagnostic or intraprocedural CT, C-arm CT, or MRI.
Liver-based tissue-mass localization and resection procedures, including imaging-guided placement of a fiducial sensor near a liver mass or lesion, an access path, a planned resection line, and an electrical lead extending to an expandable basket at the organ surface.
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