Methods and systems for transcaval treatment of aneurysms

Inventors

Kuhn, Matthew • Tatavoosian, Ahramahzd

Assignees

Taurus Vascular Inc

Abstract

Embodiments described herein relate to a shunt including a self-adjusting mechanism for treating conditions such as an aortic aneurysm. In some embodiments, the shunt may include a central portion, a distal end, and a proximal end. In some embodiments, the distal end of the shunt may be configured to roll proximally (e.g., into a toroidal structure) when the shunt transitions from a delivery configuration to a deployed configuration. In some embodiments, the distal end of the shunt may be configured to roll and/or unroll after deployment such that a length of the shunt can be adjustable to accommodate changing anatomy. In some embodiments, the proximal end may be configured to expand into a disc-like shape when the shunt transitions from the delivery configuration to the deployed configuration.

Core Innovation

The invention relates to a transcaval treatment of aortic/abdominal aortic aneurysms using a shunt that transitions between a delivery configuration and a deployed configuration. In the deployed configuration, the second end rolls to form a ring-like structure and the shunt decreases a total length. When the shunt is at least partially disposed in an anatomical structure, the shunt dynamically adjusts the total length by further rolling or unrolling of the ring-like structure.

The disclosed dynamic adjustment responds to changes in the anatomical structure or pressure conditions in an environment around the shunt, including changes that alter anchoring and fluid-tight sealing between an artery and a vein. The disclosure describes sealing/fluid-management features that maintain sealing and anchoring at both ends while the shunt dynamically changes total length.

The document also describes related structural and deployment configurations for the self-adjusting, ring-like shunt, including a central portion and sealing structures that transition from cylindrical delivery to deployed ring-like and disc-like shapes. It describes possible use with delivery systems such as a deployment catheter and sliding sheath, and sealing structure features such as self-expandable seals.

Claims Coverage

The provided independent claims are clm-00001, clm-00023, and clm-00032. Across these independent claims, the inventive features focus on cylindrical-to-deployed geometric transitions forming ring-like structures and decreasing total length, dynamic total-length adjustment via rolling/unrolling in response to anatomical structure or pressure conditions, and an anchoring first-end shape that prevents movement with a rolling/unrolling second end.

The independent claims collectively cover a transcaval shunt apparatus that transitions from a cylindrical delivery configuration to deployed geometries that form ring-like structures and decrease total length, while further rolling or unrolling dynamically adjusts total length in response to anatomical structure and pressure or condition changes. In the clm-00032 framework, a first-end deployed shape fixes the shunt relative to an anatomical structure to prevent movement, with a second end rolling and unrolling relative to the first end to achieve dynamic length adjustment.

Stated Advantages

Documented Applications