Boston Scientific Scimed, Inc.

Daniel Lee Krautkremer

Roger W McGowan

Daniel Frank Massimini

Haiping Shao

Katherine M Prindle

Daniel James Horn

Jeffrey S Lindquist

Robert Squire

Adam Joseph Royer

Kevin Walsh

Kathleen Corcoran

Allison M Pearlman

Jill M White

A catheter system for imparting pressure to induce fractures at a treatment site within or adjacent a blood vessel wall includes a catheter, a fortified balloon inflation fluid and a first light guide. The catheter includes an elongate shaft and a balloon that is coupled to the elongate shaft. The balloon has a balloon wall and can expand to a first expanded configuration to anchor the catheter in position relative. The fortified balloon inflation fluid can expand the balloon to the first expanded configuration. The fortified balloon inflation fluid includes a base inflation fluid and a fortification component. The fortification component reduces a threshold for inducing plasma formation in the fortified balloon inflation fluid compared to the base inflation fluid. The fortification component can include at least one of carbon and iron. The first light guide is disposed along the elongate shaft and is positioned at least partially within the balloon. The first light guide is in optical communication with a light source and the fortified balloon inflation fluid. The light source provides sub-millisecond pulses of a light to the first light guide so that plasma formation and rapid bubble formation occur in the fortified balloon inflation fluid, thereby imparting pressure waves upon the treatment site.

Fortified balloon inflation fluid for plasma system to disrupt vascular lesions

Medical devices and methods for making and using medical devices are disclosed. An example medical device may include a catheter. The catheter may include a catheter shaft and a balloon. The balloon may comprise a cone portion, a waist portion, and a body portion. A fiber braid may be disposed along the balloon. An inner surface of the waist portion may be thermally bonded to an outer surface of the catheter shaft and an inner surface of the fiber braid may be adhesively bonded to an outer surface of the waist portion.

Medical balloon

A catheter system for pressure wave and inertial impulse generation for intravascular lesion disruption at a treatment site includes a catheter including an elongate shaft and balloon coupled to the elongate shaft. The catheter system includes a light guide disposed along the elongate shaft and at least partially within the balloon, where the light guide is in optical communication with a light source and a balloon fluid. The catheter can include a first focusing element located at a distal portion of the light guide and in optical communication with the light source. The first focusing element can direct light from within the light guide to a first location at a first distance away from the distal portion of the light guide to initiate plasma formation in the balloon fluid away from the distal portion and to cause rapid bubble formation, thereby imparting pressure waves at the treatment site.

Focusing element for plasma system to disrupt vascular lesions

A catheter system includes a catheter having an elongate shaft, a balloon and a light guide. The balloon expands from a collapsed configuration to a first expanded configuration. The light guide is disposed along the elongate shaft and is in optical communication with a light source and a balloon fluid. A first portion of the light guide extends into a recess defined by the elongate shaft. A protection structure is disposed within the recess and is in contact with the first portion of the light guide. The light source provides pulses of light to the balloon fluid, thereby initiating plasma formation and rapid bubble formation within the balloon, thereby imparting pressure waves upon a vascular lesion. The protection structure can provide structural protection from the pressure waves to the first portion of the light guide.

Light guide protection structures for plasma system to disrupt vascular lesions

A catheter system includes a catheter having an elongate shaft, a balloon and a light guide. The balloon expands from a collapsed configuration to a first expanded configuration. The light guide is disposed along the elongate shaft and is in optical communication with a light source and a balloon fluid. A first portion of the light guide extends into a recess defined by the elongate shaft. A protection structure is disposed within the recess and is in contact with the first portion of the light guide. The light source provides pulses of light to the balloon fluid, thereby initiating plasma formation and rapid bubble formation within the balloon, thereby imparting pressure waves upon a treatment site. The protection structure can provide structural protection from the pressure waves to the first portion of the light guide.

Catheter assemblies and methods for making and using catheter assemblies are disclosed. An example a catheter assembly includes a catheter shaft and a balloon attached to the catheter shaft. The balloon includes a body and a proximal waist portion. The proximal waist portion has a proximal end. The catheter assembly also has a fiber braid including one or more individual filaments disposed along the balloon. The fiber braid has a proximal end aligned with the proximal end of the waist portion. The catheter assembly also has a polymer sleeve disposed on the catheter shaft, wherein in the polymer sleeve abuts the proximal end of the balloon waist and the proximal end of the braid.

Medical balloon with reinforcing member

A stent includes a tubular support structure extending from a distal end to a proximal end, the tubular support structure including an inner surface and an outer surface. A retractable anchor system is disposed relative to the tubular support structure and includes a frame member and a plurality of retractable anchors secured to the frame member. The plurality of retractable anchors are biased to a deployed configuration in which the plurality of retractable anchors extend radially outward from the outer surface of the tubular support structure but are radially inwardly compressible into a delivery configuration.

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Plymouth, MN, United States of America

Daniel Lee Krautkremer