Biopsy Site Marker with Anchoring and Visualization

The marker is divided into multiple segments or components including anchoring elements (such as barbs, hooks, or interlocking structures) that can engage with surrounding tissue. This segmentation allows the marker to be implanted simply while the distributed anchoring points prevent migration by distributing the mechanical engagement across multiple tissue interfaces.

The marker incorporates nested structures where inner components are housed within outer components. For example, anchoring elements may be stored within a delivery catheter and deployed after marker placement, or multiple functional layers are integrated concentrically. This nesting allows for simple initial implantation followed by activation of anchoring mechanisms to prevent migration.

Multiple functions are merged into a single integrated marker structure. The marker combines visualization features (radiopaque or echogenic materials), anchoring mechanisms (barbs, hooks, or interlocking elements), and tissue engagement features all in one component. This merging reduces the number of separate devices needed while achieving position stability through the integrated anchoring features.

The marker is designed as a multi-functional device that simultaneously provides visualization (through radiopaque/echogenic properties), anchoring (through mechanical engagement features), and tissue marking functions. This universality allows a single device to address multiple requirements without increasing overall system complexity, as all functions are embodied in one marker rather than requiring separate components.

The marker incorporates distinct patterns, colors, or radiographic densities that create a recognizable visual signature under imaging modalities. These patterns may be achieved through layered materials, embedded radiopaque markers in specific arrangements, or surface treatments that reflect ultrasound waves in characteristic patterns. The visual distinctiveness is achieved through material selection and arrangement rather than complex manufacturing processes.

The marker uses composite materials combining different properties in a single structure. For example, the marker may combine radiopaque materials with biocompatible polymers, or integrate echogenic surfaces with flexible body materials. These composite structures provide distinct imaging patterns while being manufactured through standard composite material processing techniques, avoiding excessive manufacturing complexity.