Action/counteraction superimposed double chamber broad area tissue ablation device

Inventors

Sperling, Jason

Assignees

Corfigo Inc

Abstract

A non-linear ablation device includes two opposing surfaces, which are associated with two overlying and separate compartments. A first compartment of the two overlying and separate compartments is configured to emit or resorb energy. A second compartment of the two overlying and separate compartments is configured to either resorb or emit energy to oppose a direction of energy transfer of the first compartment. Other embodiments of the non-linear ablation device are further disclosed.

Core Innovation

The invention provides a non-linear, broad-area cryoablation device that treats an exterior surface of an internal organ using an ablation body having two opposing compartments. A first compartment defines a cryoablation compartment and includes a cryoablation surface that resorbs energy by cryothermy/freezing, and a second opposing compartment defines an insulation compartment that insulates surrounding tissues from the cryoablation compartment. The compartments are arranged to act against an energy transfer direction so that energy does not continue to act on unintended adjacent tissues.

In an expanded deployment configuration, the cryoablation surface is substantially flat and quadrilateral and is sized and shaped to contact a large planar area of the exterior surface of the internal organ. Each of the cryoablation surface and the insulation surface has a surface area of at least six cm2 in the expanded deployment configuration. The insulation compartment contains an increased amount of an insulation fluid in the inflated or expanded configuration to protect adjacent structures disposed adjacent to the insulation surface.

The device further includes ablation fluid delivery and removal lines that deliver and remove an ablation fluid such that the ablation fluid is continuously shuttled through the cryoablation compartment. The ablation body is collapsible into a collapsed configuration suitable for minimally invasive procedure and deployable into the expanded configuration, and the documented embodiments describe expandable and collapsible deployment such as roll-up and unrolling into a generally quadrilateral or rectangular shape with an elongated or displaced corner. Integrated temperature sensors may be included to monitor dynamic and steady-state temperatures during operation.

A related ablation method is also described, including positioning an ablation device adjacent to an exterior surface of an internal organ, deploying an ablation body from an uninflated or collapsed configuration to an inflated or expanded configuration, contacting the cryoablation surface to a substantial portion of the exterior surface, and ablating the exterior surface by causing the cryoablation surface to resorb energy through delivery of ablation fluid while continuously shuttling the ablation fluid through the cryoablation compartment. Structures disposed adjacent to the insulation surface are protected by insulating the structures from the energy of the cryoablation surface.

Claims Coverage

The provided claim set includes three independent claims. Across these claims, the core inventive features revolve around an ablation body that transitions from a collapsed minimally invasive configuration to an expanded configuration with a flat quadrilateral cryoablation surface, an adjacent insulation compartment with increased insulation fluid to insulate surrounding tissues, and continuous shuttling of ablation fluid via delivery and removal lines coupled to the ablation body.

Across the independent claims, the coverage centers on an ablation body with a flat quadrilateral cryoablation surface sized to contact a large planar area, an adjacent opposite-side insulation compartment containing increased insulation fluid to insulate surrounding tissues, deployment between collapsed minimally invasive and expanded inflated configurations, and delivery and removal lines arranged to continuously shuttle ablation fluid through the cryoablation compartment while the insulation surface protects adjacent structures.

Stated Advantages

Documented Applications