Method and apparatus for mapping a structure
First Claim
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1. A system for mapping data and positioning an instrument in a three dimensional volume, comprising:
- a first drive patch and a second drive patch;
a driving unit interconnected with the first and the second drive patches operable to generate a parameter between the first and the second drive patches;
an instrument having a body covering and an electrode extendable from a retracted position to an extended position through an exit opening of the body covering, wherein the electrode is operable to both move relative to the first drive patch and the second drive patch and sense the parameter generated by the driving unit;
a cover operably associated with the electrode;
a memory system operable to store a data point representing a position in space relative to the first and the second drive patches;
a processor operable to execute instructions to determine a position of the electrode relative to the stored data point; and
a display device operable to display an icon representing a virtual representation of a position of the electrode;
wherein the body covering includes a portal positioned a distance from the exit opening;
wherein the portal is operable to allow an electrolyte to contact the electrode when the electrode is in the retracted position;
wherein the cover is operable to move with the electrode to cover the portal in the body covering to substantially eliminate access to the electrode of the body covering through the portal once the electrode is in the extended position through said exit opening.
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Abstract
An area 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 an area or volume can be determined based upon the sensing of the plurality of points without the use of an imaging device. An implantable medical device can then be navigated relative to the mapping data.
312 Citations
20 Claims
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1. A system for mapping data and positioning an instrument in a three dimensional volume, comprising:
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a first drive patch and a second drive patch; a driving unit interconnected with the first and the second drive patches operable to generate a parameter between the first and the second drive patches; an instrument having a body covering and an electrode extendable from a retracted position to an extended position through an exit opening of the body covering, wherein the electrode is operable to both move relative to the first drive patch and the second drive patch and sense the parameter generated by the driving unit; a cover operably associated with the electrode; a memory system operable to store a data point representing a position in space relative to the first and the second drive patches; a processor operable to execute instructions to determine a position of the electrode relative to the stored data point; and a display device operable to display an icon representing a virtual representation of a position of the electrode; wherein the body covering includes a portal positioned a distance from the exit opening; wherein the portal is operable to allow an electrolyte to contact the electrode when the electrode is in the retracted position; wherein the cover is operable to move with the electrode to cover the portal in the body covering to substantially eliminate access to the electrode of the body covering through the portal once the electrode is in the extended position through said exit opening. - View Dependent Claims (2, 3, 4)
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5. A system for mapping data and positioning an instrument in a three dimensional volume, comprising:
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a first drive patch and a second drive patch; a driving unit interconnected with the first and the second drive patches operable to generate a parameter between the first and the second drive patches; an instrument having a body covering and an electrode extendable from a retracted position to an extended position through an exit opening of the body covering, wherein the electrode is operable to both move relative to the first drive patch and the second drive patch and sense the parameter generated by the driving unit; a memory system operable to store a data point representing a position in space relative to the first and the second drive patches; a processor operable to execute instructions to determine a position of the electrode relative to the stored data point; and a display device operable to display an icon representing a virtual representation of a position of the electrode; wherein the body covering includes a portal positioned a distance from the exit opening; wherein the portal is operable to allow an electrolyte to contact the electrode when the electrode is in the retracted position; wherein the first drive patch and the second drive patch are positioned in contact with a patient; wherein the body covering is an insulator to electrical current such that the substantially only a high impedance path to the electrode is provided to measure a voltage when covered with the body covering; and a cover operably associated with the electrode; wherein the cover is operable to move with the electrode to cover the portal in the body covering to substantially eliminate access to the electrode of the body covering through the portal once the electrode is in the extended position through said exit opening. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for mapping data and positioning an instrument in a three dimensional volume comprising:
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moving an electrode having a body covering operable to substantially cover the electrode when the electrode is in the first retracted position and said body covering defining an electrode exit opening and a portal through the body covering from a first retracted position to a second extended position; moving a cover to cover the portal in the body covering when moving the electrode from the first retracted position to the second extended position out the exit opening; whereby when the electrode is in the first retracted position the voltage is sensed through the portal; whereby when the electrode is in the second extended position the portal is closed by the cover. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification