A catheter assembly is provided having a working lumen and a guide. The guide is configured to position a fragmentizing device within the working lumen. The guide is configured to prevent or minimize any unintended movement of a distal section of the fragmentizing device within the working lumen when the distal section of the fragmentizing device is positioned at a distal end of the working lumen.

An optical orientation device includes a support structure; an optical element having an optical surface interacting with a laser beam; and a mechanism mounted on the support structure rotating the optical element around mutually perpendicular first and second fixed rotation axes. The mechanism includes a first rotary assembly articulated around a first mobile support axis, which is rotary and perpendicular relative to the first rotation axis. The first rotary assembly is coupled to the support structure to rotate around the first rotation axis, so the optical element rotates around the first rotation axis and the first mobile support axis. A second rotary assembly rotates around a second mobile support axis perpendicular to the first mobile support axis. The beam passes through a cavity around the first rotation axis, the cavity facing the optical element. First and second linear actuators rotate the first rotary assembly and the second rotary assembly, respectively.

Low power laser therapy device, which comprises at an optical system, the optical system comprising a laser light source, a beam expander in front of the light sources, a raster arrangement of first light scattering elements on the frontal surface of the beam expander, and the device comprise a housing around the optical system having a mouth opening covered by a closing member, wherein in front of the optical system a second light scattering element is arranged that fills the mouth opening, and the beam expander and the first and second light scattering elements are made from transparent material that does not affect the polarization of light rays passing therethrough.

A catheter assembly is provided having a working lumen and a guide. The guide is configured to position a fragmentizing device within the working lumen. The guide is configured to prevent or minimize any unintended movement of a distal section of the fragmentizing device within the working lumen when the distal section of the fragmentizing device is positioned at a distal end of the working lumen.

The present disclosure generally relates to systems and methods for laser alignment, and more particularly, systems and methods for alignment of an optical element for laser transmission. In certain embodiments, a cover plate is configured to slide into place on an optic mounting plate. Positioning the cover plate applies force to a biasing element to press an optical element against a registration surface of the optic mounting plate to align the optical element with an optical aperture. The cover plate may be secured relative to the optic mounting plate to retain the biasing element and the optical element.

Catheter tools for heart valve treatment define a main channel extending the length thereof and terminating with a clamshell-shaped tool configured to define a compartment shaped to receive a leaflet of a heart valve. The clamshell-shaped tool has an aortic shell and a ventricular shell operatively openable about a hingepoint proximate the distal end of the catheter body and operatively expandable to fan outward at their respective distal ends to form the compartment. The main channel is operatively open into the compartment formed by the clamshell-shaped tool while open and while closed. Methods of remodeling a cusp of a heart valve are also present herein. The method includes introducing the catheter to a target heart valve, deploying the valve cusp enclosure into an expanded state in which a cusp of a heart valve is enclosed in an isolated pocket and simultaneously expanding the through conduit into a corresponding expanded state.

A device for resecting hard biological tissue is provided. The device comprises a laser source configured to emit a laser beam, and a plurality of optical fibers, each having a proximal end optically coupled to the laser source and a distal end configured to emit the laser beam. A support structure maintains the distal ends of the optical fibers in a predetermined spatial arrangement. A window is positioned to permit transmission of the laser beam from the distal ends toward the tissue. At least one spacing element is associated with the support structure to maintain a predetermined distance between the distal ends and the tissue during operation. The device further includes a fluid delivery system associated with the support structure and configured to deliver a fluid to a cutting interface at the tissue. The arrangement enables precise, efficient, and controlled laser ablation or resection of hard tissue, with improved cooling and debris management.

A catheter system for treating a treatment site within or adjacent to a vessel wall includes a light source, a balloon, a light guide, and an optical analyzer assembly. The light source generates light energy. The balloon is positionable substantially adjacent to the vascular lesion. The balloon has a balloon wall that defines a balloon interior that receives a balloon fluid. The light guide receives light energy from the light source at a guide proximal end and guides the light energy toward a guide distal end and into the balloon interior. The optical analyzer assembly is configured to optically analyze light energy emitted from the guide proximal end of the light guide.