The University of Texas System

Xcath, Inc.

Younghee Shim

Daniel Huan Kim

Dong Suk Shin

Viljar Palmre

Daniel H Kim

Bhavik Patel

Yongman Park

Taeho Jang

Jeihan Lee

Hongmin Kim

Kihoon Nam

Jaeyeon Lee

An elongate, flexible, medical device having distal and proximal ends, including an inner member having a proximal and distal end, a support member extending around the inner member between the proximal and distal end, a plurality of electrically-conductive wires, each braided with the support member having a proximal and distal end, an outer member surrounding the inner member, the support member, and the plurality of electrically-conductive wires and an actuator including a polymer electrolyte layer secured adjacent to the distal end of the elongate, flexible inner member and defining an exterior surface, electrodes distributed about the exterior of the polymer electrolyte layer. The distal end of one of the electrically-conductive wires is electrically connected to one of the electrodes. The polymer electrolyte layer is configured to deform asymmetrically in response to the application of an electrical signal through the plurality of electrically-conductive wires to the plurality of electrodes.

Method for preparing a steerable medical device with braided structure

A catheter comprises a hollow sheath, a guidewire extendable through the hollow sheath, where the guidewire comprises a controllably bendable tip portion, a hollow tubular intermediate portion connected to the tip portion, an electrical connection portion connected to the hollow tubular portion, at least a first wire extending through the hollow tubular portion and connected at a first end thereof to a first circumferential conductor and at a second end thereof to a surface of the tip end, and a power supply connector, therein the electrical connection portion is received in the power supply connector and a first terminal in the power supply connector contacts the first circumferential conductor.

Introduction device including an electroactive tip on a guidewire

The present invention relates to an elongate, flexible, medical device comprising: an elongate, flexible inner member; a support member extending around the inner member; a plurality of electrically-conductive wires, each being braided with the support member; an outer member; and at least one ionic electroactive polymer actuator, the actuator comprising: at least one polymer electrolyte layer secured adjacent to the distal end of the inner member; and a plurality of electrodes circumferentially distributed about the exterior surface of the at least one polymer electrolyte layer, wherein at least one of the plurality of electrically-conductive wires, adjacent to the distal end thereof, is electrically connected to one of the electrodes, and the at least one polymer electrolyte layer is configured to deform asymmetrically in response to the application of an electrical signal through at least one of the plurality of electrically-conductive wires to at least one of the plurality of electrodes.

Steerable medical device with braided structure and the preparing method thereof

Provided herein as a steerable surgical robotic system for positioning a catheter comprising a sheath and a guidewire within a patient body, including a sheath driver configured to advance and retract a sheath having a hollow interior along a sheath advance and retract path extending therein, a guidewire driver configured to advance and retract a guidewire along a guidewire advance and retract path extending therein, wherein each of the sheath advance and retract path and the guidewire advance and retract path extend between pairs of rollers in the respective sheath and roller drivers, and the paths are parallel to each another.

Steerable surgical robotic system

A medical device includes at least one ionic electroactive polymer actuator, the actuator including at least one polymer electrolyte member defining at least a surface and a plurality of electrodes disposed about the surface of the at least one polymer electrolyte member, an elongate, flexible portion defining a proximal end and a distal end secured adjacent to the ionic electroactive polymer actuator and the elongate, flexible portion further comprising a core and a sleeve surrounding the core and a plurality of electrically-conductive wires, each having a proximal end and a distal end coupled to at least one of the plurality of electrodes, wherein the at least one polymer electrolyte member deforms asymmetrically in response to the application of an electrical potential supplied through at least one of the plurality of electrically-conductive wires to at least one of the plurality of electrodes.

Growing community of inventors

Houston, TX, United States of America

Younghee Shim