Ultrasound sensor

Abstract

The invention relates to the guidance, positioning and placement confirmation of intravascular devices, such as catheters, stylets, guidewires and other flexible elongate bodies that are typically inserted percutaneously into the venous or arterial vasculature. Currently these goals are achieved using x-ray imaging and in some cases ultrasound imaging. This invention provides a method to substantially reduce the need for imaging related to placing an intravascular catheter or other device. Reduced imaging needs also reduce the amount of radiation that patients are subjected to, reduce the time required for the procedure, and decrease the cost of the procedure by reducing the time needed in the radiology department. An aspect of the invention includes, for example, an endovenous access and guidance system. The system comprises: an elongate flexible member adapted and configured to access the venous vasculature of a patient; a sensor disposed at a distal end of the elongate flexible member and configured to provide in vivo non-image based ultrasound information of the venous vasculature of the patient; a processor configured to receive and process in vivo non-image based ultrasound information of the venous vasculature of the patient provided by the sensor and to provide position information regarding the position of the distal end of the elongate flexible member within the venous vasculature of the patient; and an output device adapted to output the position information from the processor.

Description

CROSS-REFERENCE

[0001] This application claims the benefit of U.S. Provisional Patent Application No. 60 / 678,209 filed on May 6, 2005 by Sorin Grunwald, et al., entitled “Method and Apparatus for Intravascular Catheter Guiding and Positioning” and to U.S. Provisional Patent Application Ser. No. 60 / 682,002 filed on May 18, 2005, also by Sorin Grunwald, et al., entitled “Method and Apparatus for Intravascular Catheter Guiding and Positioning” each of which is incorporated herein by reference in its entirety.BACKGROUND OF THE INVENTION

[0002] The invention relates to the guidance, positioning and placement confirmation of intravascular devices, such as catheters, stylets, guidewires and other elongate bodies that are typically inserted percutaneously into the venous or arterial vasculature, including flexible elongate bodies. Currently these goals are achieved using x-ray imaging and in some cases ultrasound imaging. This invention provides a method to substantially reduce the need for...

Images