US 2025/0152196 A1 · OPEN LOOP ÉCRASEUR FOR TENOTOMY

Abstract

An open loop percutaneous écraseur. The disclosed écraseur enable circumscription of elongate organs or tissue, such as tendons and blood vessels, which cannot be circumscribed by closed loop forms. The device is “open loop” because initially a cutting wire is routed around the cutting target. A variety of methods and structure for closing the écraseur loop are disclosed. The disclosed écraseur pierce and are anchored in the targeted tissue, thereby limiting relative motion of the écraseur relative to the cutting target. Severance of the target is controlled entirely from the proximal end of the instrument and performed centripetally, thereby avoiding risks associated with the use of cutting blade devices. The cutting target does not have to be accessed by open surgical techniques to complete the circumscription, enabling a minimally invasive severance with a single exterior incision that is smaller than the target to be cut.

Claims34

Dependent claims

An open loop écraseur, comprising:

a trocar that defines and is collinear with a central axis, said trocar including a distal end portion that defines a sharp distal tip for percutaneous insertion, said distal end portion defining a first lateral opening proximate said sharp distal tip;
a central stem dimensioned for a sliding axial translation within said trocar, said central stem including a first lateral side for alignment adjacent said first lateral opening;
a first steerable catheter disposed in said trocar along said first lateral side of said central stem, said first steerable catheter defining a first working channel and including a distal steering section that is extendible radially outward through said first lateral openings, a distal extremity of said steering portion being steerable radially inward toward said first lateral opening;
a cutting wire assembly at least partially disposed in said trocar;
and
means for closing an écraseur loop via said first steerable catheter for at least partial circumscription of a cutting target,
wherein said first steerable catheter is retractable within said trocar in a proximal direction to expose said cutting wire assembly for contraction through said cutting target.

4 more elements

Dependencies are inferred from the claim text.

Open loop écraseur for tenotomy

Life of this patent

Open loop écraseur for tenotomy

Life of this patent

Abstract

Claims34