US 10,945,633 B2Granted

Automated catalog and system for correction of inhomogeneous fields

AssigneeSt. Jude Medical, Atrial Fibrillation Division, Inc.

InventorsLuke Y. Chen, Eric S. Olson

Life of this patent

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Abstract

A method for providing a localization system with detailed information regarding a catheter's construction, while at the same time preventing operator input errors, for use in a three-dimensional localization field, including providing a catheter having at least one feature, providing a catheter catalog for use by the localization system, wherein the catheter catalog comprises reference data relating to features of the catheter, placing the catheter into the localization field, creating a map with the localization field, locating the catheter on the map, and correlating features of the catheter within the localization field with measurements made by the localization system when the feature is at various locations.

Claims16

Dependent claims

A localization system with error correction for inhomogeneous localization fields, comprising:

at least one localization field generator for creating a localization field that can be used for determining a location of an object within the localization field;
at least one detector to measure characteristics of the localization field generated by the at least one localization field generator;
a modeling processor to create a three-dimensional coordinate system for the localization field, said three-dimensional coordinate system comprising a look up table having a plurality of reference points and a plurality of measurement values associated with each of the plurality of reference points, and said three-dimensional coordinate system serving as a reference for defining an observed location of an object in the localization field;
an error processor to determine a difference between an observed distance between two points on the object within the localization field and a known physical distance between the two points on the object located within the localization field, said distances being relative to the three-dimensional coordinate system;
and
a correction processor coupled to the modeling processor and the error processor, wherein the correction processor adjusts locations of at least two reference points in the three-dimensional coordinate system to adjust the information in the look up table to account for a difference detected by the error processor, such that any difference between the observed distance and the known physical distance is reduced.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/412,100Filed 23 Jan 2017 · continuation
Priority: 9 Mar 2007
Published: US 2017/0172454 A122 Jun 2017
Granted: 16 Mar 2021
Term ends: Not estimatedThe source records don’t support an estimate.

Classification18 codes

A61B 5/062
Determining position of a probe within the body employing means separate from the probe, e.g. sensing internal probe position employing…
A61B 5/06
Measuring for diagnostic purposes ; Identification of persons: devices, other than using radiation, for detecting or locating foreign bodies ;…
A61B 5/287
Invasive: holders for multiple electrodes, e.g. electrode catheters for electrophysiological study [EPS]
A61B 6/503
Specially adapted for specific body parts; specially adapted for specific clinical applications: for diagnosis of the heart

Family

Application11/715,919Parent of this continuation-in-part · filed 9 Mar 2007
Application60/894,333Us provisional application · filed 12 Mar 2007
Application12/047,023Parent of this continuation · filed 12 Mar 2008
US 9,549,689 B2Parent of this continuation-in-part · filed 24 Jan 2017
US 2017/0172454 A1Pre-grant publication · published 22 Jun 2017
US 9,591,990 B2Parent of this continuation
Application12/047,023Parent of this continuation-in-part
US 2008/0221438 A1Published application
US 2008/0221643 A1Published application
US 10,945,633 B2This patent

From the US filing history. Foreign family members aren’t listed.

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