Determining a location of a member
First Claim
Patent Images
1. A method to locate and determine a position of portions of an instrument in a volume, comprising:
- providing an elongated and flexible member extending between a first end and a second terminal end with a first position element having a plurality of first position element portions positioned near the first end and between the first end and the second terminal end and a second position element positioned near the second terminal end;
positioning a set of axis generation electrodes on a surface of the volume;
injecting a current into the volume between the set of axis generation electrodes;
sensing with the first position element and the second position element an electrical property due to the injected current into the volume between the set of axis generation electrodes;
evaluating the sensed electrical property sensed with the first position element and the second position element;
determining a relative position of the first position element and the second position element based on the evaluation of the electrical property;
determining a non-linear geometry of the elongated and flexible member based on the determined relative position of the first position element having the plurality of first position element portions and the second position element; and
determining an amount of lead slack of the elongated and flexible member within the volume based on the determined non-linear geometry.
1 Assignment
0 Petitions
Accused Products
Abstract
An volume of a patient can be mapped with a system operable to identify a plurality of locations and save a plurality of locations of a mapping instrument. The mapping instrument can include one or more electrodes that can sense a voltage that can be correlated to a three dimensional location of the electrode at the time of the sensing or measurement. Therefore, a map of a volume can be determined based upon the sensing of the plurality of points without the use of other imaging devices. An implantable medical device can then be navigated relative to the mapping data.
-
Citations
20 Claims
-
1. A method to locate and determine a position of portions of an instrument in a volume, comprising:
-
providing an elongated and flexible member extending between a first end and a second terminal end with a first position element having a plurality of first position element portions positioned near the first end and between the first end and the second terminal end and a second position element positioned near the second terminal end; positioning a set of axis generation electrodes on a surface of the volume; injecting a current into the volume between the set of axis generation electrodes; sensing with the first position element and the second position element an electrical property due to the injected current into the volume between the set of axis generation electrodes; evaluating the sensed electrical property sensed with the first position element and the second position element; determining a relative position of the first position element and the second position element based on the evaluation of the electrical property; determining a non-linear geometry of the elongated and flexible member based on the determined relative position of the first position element having the plurality of first position element portions and the second position element; and determining an amount of lead slack of the elongated and flexible member within the volume based on the determined non-linear geometry. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A method to locate and determine a position of portions of an instrument in a volume, comprising:
-
providing an elongated and flexible member extending between a first end and a second terminal end with a plurality of first tracking devices positioned near the first end and between the first end and the second terminal end and a second tracking device positioned at the second terminal end; sensing with the plurality of first tracking devices and the second tracking device electrical signals in the volume; evaluating the sensed electrical signals sensed with the plurality of first tracking devices and the second tracking device; determining a relative position of the plurality of first tracking devices and the second tracking device based on the evaluation of the electrical signals; determining a non-linear geometry of the elongated and flexible member based on the determined relative position of the plurality of first tracking devices and the second tracking device; and determining an amount of lead slack of the elongated and flexible member within the volume based on the determined non-linear geometry. - View Dependent Claims (10, 11, 12, 13, 14, 15)
-
-
16. A system to locate and determine a position of portions of an instrument in a volume of a patient, comprising:
-
an elongated and flexible implantable lead extending between a first end and a second terminal end; a first position element positioned near the first end of the implantable lead, wherein the first position element includes a plurality of first position element portions positioned along a length of the flexible implantable lead between the first end and the second terminal end; a second position element positioned at the second terminal end of the implantable lead; a set of axis generation electrodes configured to be positioned on a surface of the volume; a driver to inject a current into the volume between the set of axis generation electrodes; a processor operable to evaluate an electrical property sensed with the first position element and the second position element based at least on the injected current, wherein the processor is further operable to determine an amount of lead slack of the elongated and flexible implantable lead within the volume based on a determined non-linear geometry of the position of the elongated and flexible implantable lead; and a display device operable to display the non-linear geometry of the elongated and flexible implantable lead. - View Dependent Claims (17, 18, 19, 20)
-
Specification