Locating a member in a structure
First Claim
Patent Images
1. A method of determining a location of an instrument in a volume, comprising:
- evaluating the volume;
determining at least a first section of the volume and a second section of the volume based on the evaluation of the volume;
determining a first characteristic representative of the first section;
determining a second characteristic representative of the second section;
placing an instrument in one of the first section or the second section;
searching for the first characteristic or the second characteristic to determine whether at least one of the first characteristic and the second characteristic is present or absent;
determining whether the instrument is located in at least one of the first section or the second section based at least on the presence or the absence of the first characteristic or the second characteristic.
3 Assignments
0 Petitions
Accused Products
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.
-
Citations
25 Claims
-
1. A method of determining a location of an instrument in a volume, comprising:
-
evaluating the volume; determining at least a first section of the volume and a second section of the volume based on the evaluation of the volume; determining a first characteristic representative of the first section; determining a second characteristic representative of the second section; placing an instrument in one of the first section or the second section; searching for the first characteristic or the second characteristic to determine whether at least one of the first characteristic and the second characteristic is present or absent; determining whether the instrument is located in at least one of the first section or the second section based at least on the presence or the absence of the first characteristic or the second characteristic. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A method of determining a location of an instrument in a volume, comprising:
-
evaluating the volume; determining at least a first section of the volume and a second section of the volume based on the evaluation of the volume; determining a first characteristic of the first section; determining a second characteristic of the second section; placing an instrument in one of the first section or the second section; searching for the first characteristic or the second characteristic to determine whether at least one of the first characteristic and the second characteristic is present or absent; determining whether the instrument is located in the first section or the second section based at least on the presence or the absence of the first characteristic or the second characteristic; determining a position difference between the first section and the second section; determining a position of the instrument, wherein the instrument is operable to be in a plurality of positions within the location; and moving the instrument into a heart; wherein determining a first characteristic of a first section includes; measuring and storing a pulse pressure of the first section; determining when an electrocardiogram deflection occurs coincident with an electrogram deflection; and a relative position of the instrument within the volume. - View Dependent Claims (12)
-
-
13. A method of determining a location of an instrument in a volume, comprising:
-
evaluating the volume; determining at least a first section of the volume and a second section of the volume based on the evaluation of the volume; determining a first characteristic of the first section; determining a second characteristic of the second section; placing an instrument in one of the first section or the second section; searching for the first characteristic or the second characteristic to determine whether at least one of the first characteristic and the second characteristic is present or absent; determining whether the instrument is located in the first section or the second section based at least on the presence or the absence of the first characteristic or the second characteristic; determining a position difference between the first section and the second section; determining a position of the instrument, wherein the instrument is operable to be in a plurality of positions within the location; and moving the instrument into a heart; wherein in the heart the instrument is determined to have moved from the superior venacava to the right atrium when a measured pulse pressure is nonexistent and when an electrogram (EGM) measured with the instrument includes a deflection substantially coincident with a P-wave of an electrocardiogram (ECG); wherein in the heart the instrument is determined to have moved from the right atrium to the superior venacava when a measured pulse pressure is nonexistent, an electrocardiogram (EGM) includes substantially no deflections, and a position of the instrument is superior near the heart; wherein in the heart the instrument is determined to have moved from the right atrium to the inferior venacava when a measured pulse pressure is nonexistent, an electrocardiogram (EGM) includes substantially no deflections, and the position of the instrument is inferior relative to the heart; wherein in the heart the instrument is determined to have moved from the right atrium to the tricuspid valve when a measured pulse pressure increases to a medium pressure pulse, when an electrocardiogram (EGM) includes a first deflection substantially coincident with a R-wave of the ECG and a second deflection substantially coincident with a P-wave of the ECG; wherein in the heart the instrument is determined to have moved from the right atrium to the right ventricle when a measured pulse pressure increases significantly, when an electrocardiogram (EGM) includes a deflection substantially coincident with a R-wave of the ECG; wherein in the heart the instrument is determined to have moved from the right ventricle to the pulmonic artery when a measured pulse pressure decreases to a medium pulse pressure, when an electrocardiogram (EGM) includes a deflection substantially coincident with a P-wave of the ECG; wherein in the heart the instrument is determined to have moved from the right atrium to the coronary sinus ostium when a measured pulse pressure increases to a small pulse pressure, when an electrocardiogram (EGM) includes a deflection substantially coincident with a P-wave of the ECG, and when the instrument has moved to a lateral position in the heart.
-
-
14. A system to determine a location of an instrument in a volume, comprising:
-
a memory system operable to store information regarding a first characteristic operable to identify a first section of the volume and a second characteristic operable to identify a second section of the volume; an instrument to measure the first characteristic and the second characteristic; a processor to receive an output from the instrument including the measurement of the first characteristic and the second characteristic; wherein the processor executes instructions to determine if the first characteristic or the second characteristic has been measured; wherein the processor is operable to identify the location of the instrument as being in the first section or being in the second section based at least on the determination of whether the first characteristic or the second characteristic was measured by the instrument. - View Dependent Claims (15)
-
-
16. A system to determine a location of an instrument in a volume, comprising:
-
a memory system operable to store information regarding a first characteristic of a first section of the volume and a second characteristic of a second section of the volume; an instrument to measure the first characteristic and the second characteristic; and a processor to receive an output from the instrument including the measurement of the first characteristic and the second characteristic; wherein the processor executes instructions to identify if the first characteristic or the second characteristic has been measured; wherein the processor is operable to identify the location of the instrument as in the first section or the second section based at least on the determination of the presence of the first characteristic or the second characteristic; wherein the memory system stores instructions to be executed by the processor to determine what selected electrogram (EGM) deflection is coincident with a selected electrocardiogram (ECG) deflection and when the selected EGM deflection is coincident with the selected ECG deflection to which of the first section or the second section the relationship is related, what pulse pressure value is related to the first section of the second section, and what relative position of the instrument is related to the first section or the second section.
-
-
17. A system to determine a location of an instrument in a volume, comprising:
-
a memory system operable to store information regarding a first characteristic of a first section of the volume and a second characteristic of a second section of the volume; an instrument to measure the first characteristic and the second characteristic; and a processor to receive an output from the instrument including the measurement of the first characteristic and the second characteristic; wherein the processor executes instructions to identify if the first characteristic or the second characteristic has been measured; wherein the processor is operable to identify the location of the instrument as in the first section or the second section based at least on the determination of the presence of the first characteristic or the second characteristic; wherein the instrument includes an electrode operable to measure electrical activity within a heart of a patient to generate an electrogram of the electrical activity; an electrocardiogram operable to generate electrocardiogram of electrical activity of the heart within the patient; wherein the processor is operable to compare the electrogram and the electrocardiogram to determine a location of the instrument within the heart of the patient. - View Dependent Claims (18, 19, 20, 21)
-
-
22. A method of determining a location of an instrument in a volume, comprising:
-
analyzing a heart of a human to determine a first value of a characteristic in a first section and a second value of the characteristic in a second section; storing the determined first value in the first section and the second value in the second section; placing an instrument in one of the first section or the second section; determining a procedure value for the characteristic with or at the placed location of the instrument including whether the characteristic is present or absent; and determining whether the instrument is located in the first section or the second section based at least on the determined procedure value of the characteristic. - View Dependent Claims (23, 24, 25)
-
Specification