IDENTIFYING A STRUCTURE FOR CANNULATION
First Claim
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1. A method of determining a structure in a volume for cannulation, comprising:
- moving an instrument having a position element in the volume;
determining a plurality of positions of the position element;
rendering a map of a surface of the volume using at least a sub-plurality of the plurality of positions of the position element;
moving a portion of the position element into a bore in the surface of the volume; and
illustrating a rendered bore relative to the rendered map.
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Abstract
A 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.
139 Citations
19 Claims
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1. A method of determining a structure in a volume for cannulation, comprising:
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moving an instrument having a position element in the volume; determining a plurality of positions of the position element; rendering a map of a surface of the volume using at least a sub-plurality of the plurality of positions of the position element; moving a portion of the position element into a bore in the surface of the volume; and illustrating a rendered bore relative to the rendered map. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of determining a structure in a volume for cannulation, comprising:
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moving an instrument having at least a first position element and a catheter in the volume, wherein the first position element includes a cross-sectional dimension less than a cross-sectional dimension of the catheter; determining a plurality of positions of the first position element; rendering a map of a surface of the volume using at least a sub-plurality of the determined plurality of positions of the position element; moving a portion of the first position element into a bore in the surface of the volume; and illustrating a rendered bore relative to the rendered map. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A system to determine a structure in a volume for cannulation, comprising:
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an instrument having at least a first position element moveable relative to a catheter in the volume, wherein the first position element has a cross-sectional dimension less than a cross-sectional dimension of the catheter; a position sensing unit, including; a set of axis electrodes positionable on a surface of the volume; a driver operable to inject a current into the volume between the set of axis electrodes; wherein the injected current defines an axis within the volume; a processor operable to evaluate an electrical property with the first position element and execute instruments to determine a position of the position element within the volume; a storage device operable to store a plurality of determined positions of the first position element; and a display device operable to display a rendered map of a surface of the volume using at least a sub-plurality of the stored determined plurality of positions of the position element; wherein the display device is further operable to display a rendered bore relative to the rendered map. - View Dependent Claims (16, 17, 18, 19)
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Specification