Access site management system for percutaneous vascular access

Inventors

Agnihotri, Aashiish

Assignees

Xdot Medical Inc

Abstract

The disclosure provides a dynamic vascular access and closure device for radial cinching of an access site. The device includes a tensioning tube, a resilient member disposed within the tensioning tube, and a plurality of sutures extending axially between a distal end of the tensioning tube and a proximal end of the tensioning tube. A proximal end of each of the plurality of sutures can be configured to attach to the resilient member such that movement of that suture causes compression or extension of the resilient member within the tensioning tube to provide cinching to the sutures.

Core Innovation

The invention describes a dynamic vascular access and closure device for radial cinching that includes a tensioning tube and a resilient member disposed within the tensioning tube. A plurality of sutures extend axially between a distal end of the tensioning tube and a proximal end of the tensioning tube, and the proximal end of each suture directly couples with the resilient member. Movement of the plurality of sutures compresses or extends the resilient member within the tensioning tube, enabling reversible opening or closing of a vascular access site within a blood vessel via the plurality of sutures.

The device further provides structural features that couple suture movement to resilient-member actuation and closure of the vascular access site. Sutures include a proximal end configured to couple directly to the resilient member and may include suture stops, with distal ends coupled to vascular anchors such as nitinol anchors, including nitinol tube anchors, nitinol wire anchors, and suture knot anchors. A resilient member stop can be defined by a step through a change in internal diameter of the tensioning tube.

The invention also describes a configuration that transfers spring force to the sutures to cause reversible and dynamic opening or closing of a vascular access site. The device includes a plurality of vascular anchors attached to a blood vessel, and each suture has a proximal end with a suture stop and a distal end connected to a corresponding vascular anchor. An inner biasing tube and a compression spring are disposed within the tensioning tube, and the inner biasing tube transfers spring force from the compression spring to the plurality of sutures to tension the sutures against the anchors.

Claims Coverage

This patent portion contains three independent claims. Across these independent claims, the coverage centers on axially routed sutures coupled to a resilient member or spring to reversibly open or close a vascular access site via radial cinching, including multiple component configurations and optional suture lock functionality.

Collectively, the independent claims define dynamic vascular access and closure by reversible radial cinching using axially routed sutures whose motion applies compression or spring pressure to a resilient member, with reversible opening and closing of a vascular access site as the outcome. Claim coverage further includes alternative structural realizations: a resilient member directly coupled to sutures, a spring movably coupled to sutures via suture stops within a tensioning tube body, and an arrangement using an inner biasing tube to transfer compression spring force to sutures tensioned against multiple vascular anchors, optionally with a suture lock.

Stated Advantages

Documented Applications