US 2026/0232340 A1 · TISSUE PERFORATION SYSTEMS

Abstract

The present disclosure relates to tissue perforation systems that can be used to form an opening in a target tissue, such as a host leaflet within which a guest prosthetic valve can be expanded. In an example, a tissue perforation system comprises a needle having a needle wall defining a needle lumen around a central axis of the needle, and at least one extendable protrusion that . continuously from a protrusion base at the needle wall to a protrusion tip. The radial distance between the protrusion tip and the central axis in a bent state of the needle is greater than a radial distance between the protrusion tip and the central axis in an unbent state of the needle, at least when the needle is not constrained in the bent state by an outer enclosure.

Claims22

Dependent claims

A tissue perforating system comprising:

an outer shaft;
a needle axially movable through and relative to the outer shaft, the needle comprising:
a needle distal end portion comprising a needle tip;
a needle wall defining a needle lumen around a central axis of the needle;
and
at least one extendable protrusion extending continuously from a protrusion base at the needle wall, along at least one protrusion free edge, to a protrusion tip;
wherein the needle is configured to transition between an unbent state and a bent state;
and
wherein, when the needle is in the bent state, the protrusion tip radially protrudes from the needle wall.

6 more elements

Dependencies are inferred from the claim text.

Tissue perforation systems

Life of this patent

Tissue perforation systems

Life of this patent

Abstract

Claims22