System and method for marking an anatomical structure in three-dimensional coordinate system

• US 20060058663A1
• Filed: 09/09/2005
• Published: 03/16/2006
• Est. Priority Date: 08/01/1997
• Status: Active Grant

• Current Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Original Assignee: Scimed Life Systems Incorporated (Boston Scientific Corporation)
• Inventors: Willis, N. Parker, Brisken, Axel, Zeng, Jinglin, Hurd, Marsha
• Granted Patent: US 8,412,307 B2
• Time in Patent Office: Days
• US Class Current: 600/437
• CPC Class Codes: A61B 18/1492 having a flexible, catheter-like structure, e.g. for heart ablation A61B18/1477 takes precedence
• CPC Class Codes: A61B 2017/00106 ultrasonic
• CPC Class Codes: A61B 2018/00065 porous
• CPC Class Codes: A61B 2018/00113 with foam
• CPC Class Codes: A61B 2018/00214 Expandable means emitting energy, e.g. by elements carried thereon
• CPC Class Codes: A61B 2018/00351 Heart
• CPC Class Codes: A61B 2018/00577 Ablation
• CPC Class Codes: A61B 2018/00839 Bioelectrical parameters, e.g. ECG, EEG
• CPC Class Codes: A61B 2034/2051 Electromagnetic tracking systems
• CPC Class Codes: A61B 2034/2063 Acoustic tracking systems, e.g. using ultrasound
• CPC Class Codes: A61B 2218/002 Irrigation
• CPC Class Codes: A61B 2562/0215 Silver or silver chloride containing
• CPC Class Codes: A61B 2562/043 in a linear array
• CPC Class Codes: A61B 5/06 Devices, other than using radiation, for detecting or locating foreign bodies for removing same A61B17/50 ; determining position of probes within or on the body of the patient
• CPC Class Codes: A61B 5/287 Holders for multiple electrodes, e.g. electrode catheters for electrophysiological study [EPS]
• CPC Class Codes: A61B 5/6855 with a distal curved tip
• CPC Class Codes: A61B 5/6856 with a distal loop
• CPC Class Codes: A61B 5/6858 with a distal basket, e.g. expandable basket
• CPC Class Codes: A61B 8/0833 involving detecting or locating foreign bodies or organic structures
• CPC Class Codes: A61B 8/12 in body cavities or body tracts, e.g. by using catheters catheters per se A61M25/00
• CPC Class Codes: A61B 8/445 : Details of catheter construction
• CPC Class Codes: A61B 8/543 : involving acquisition triggered by a physiological signal
• CPC Class Codes: A61N 2007/0078 : with multiple treatment transducers

Abstract

The present invention is a device localization system that uses one or more ultrasound reference catheters to establish a fixed three-dimensional coordinate system within a patient'"'"'s heart using principles of triangulation. The coordinate system is represented graphically in three-dimensions on a video monitor and aids the clinician in guiding other medical devices, which are provided with ultrasound transducers, through the body to locations at which they are needed to perform clinical procedures. In one embodiment of a system according to the present invention, the system is used in the heart to help the physician guide mapping catheters for measuring electrical activity, and ablation catheters for ablating selected regions of cardiac tissue, to desired locations within the heart.

Claims

1-95. -95. (canceled)

96. A system for marking an anatomical structure, comprising:

at least one reference element;

a marking catheter configured for being introducing within an anatomical structure, the marking catheter carrying at least one tracking element;

localization hardware configured for causing the at least one reference element and the at least one tracking element to transmit and/or receive tracking signals between each other; and

a processor configured for determining positions of the marking catheter within a three-dimensional coordinate system based on the tracking signals; and

a graphical user interface configured for recording one of the positions of the marking catheter, and for graphically generating an anatomical landmark corresponding to the recorded location.

97. The system of claim 96, wherein the at least one reference element and the at least one tracking element are ultrasound transducers.

98. The system of claim 96, wherein the marking catheter is an intravascular catheter.

99. The system of claim 96, wherein the marking catheter carries a tissue ablative element.

100. The system of claim 96, wherein the marking catheter carries a tissue mapping element.

101. The system of claim 96, further comprising a reference catheter carrying the at least one reference element.

102. The system of claim 96, wherein the localization hardware is configured for causing the at least one reference element to transmit signals to the at least one tracking element.

103. The system of claim 96, wherein the at least one reference element comprises at least four reference elements, the localization hardware is configured for causing the at least four reference elements to transmit signals between each other, and wherein the processor is configured for establishing the three-dimensional coordinate system based on the signals transmitted between the at least four reference elements.

104. The system of claim 96, wherein the processor is configured for determining positions of the least one tracking element within the three-dimensional coordinate system based on the tracking signals, and deriving the positions of the marking catheter from the positions of the at least one tracking element.

105. The system of claim 104, wherein the localization hardware is configured for measuring the elapsed time between the transmission and reception of the tracking signals, and the processor is configured for calculating the distances between the at least one reference element and the at least one tracking element based on the tracking signals, and determining the positions of the at least one tracking element within the three-dimensional coordinate system based on the calculated distances.

106. The system of claim 104, wherein the positions of the marking catheter are positions of a distal tip of the marking catheter.

107. The system of claim 96, wherein the graphical user interface is configured for recording the location immediately in response to a user prompt.

108. The system of claim 96, wherein the graphical user interface is configured for graphically generating the marking catheter based on the determined positions of the at least one tracking element.

109. The system of claim 96, wherein the graphical user interface is configured for graphically generating an electrical activity map of the anatomical structure based on the determined positions of the at least one tracking element.

110. The system of claim 96, wherein the graphical user interface comprises a display for displaying the graphically generated anatomical landmark.

111. The system of claim 96, wherein the graphically generated anatomical landmark comprises textual information.

112. A method of marking an anatomical structure, comprising:

introducing a marking catheter within the anatomical structure;

transmitting tracking signals between the marking catheter and a reference element;

determining positions of the marking catheter within a three-dimensional coordinate system based on the tracking signals;

recording one of the positions of the marking catheter immediately in response to a user prompt; and

displaying a graphical anatomical landmark corresponding to the recorded location.

113. The method of claim 112, wherein the tracking signals are ultrasound signals.

114. The method of claim 112, wherein the marking catheter is intravascularly introduced into the anatomical structure.

115. The method of claim 112, further comprising ablating the anatomical structure with the marking catheter.

116. The method of claim 112, further comprising electrically mapping the anatomical structure with the marking catheter.

117. The method of claim 112, further comprising introducing the reference element within the anatomical structure.

118. The method of claim 112, wherein the positions of the marking catheter are positions of a distal tip of the marking catheter.

119. The method of claim 112, further comprising displaying a graphical representation of the marking catheter based on the determined positions of the marking catheter.

120. The method of claim 112, further comprising displaying an electrical activity map of the anatomical structure, wherein the graphical anatomical landmark is displayed with the electrical activity map.

121. The method of claim 112, wherein the graphical anatomical landmark comprises textual information.

122. The method of claim 112, wherein the anatomical structure is a heart.

123. The method of claim 112, further comprising navigating one or more catheters within the anatomical structure based on the displayed anatomical landmark.