Locating an indicator
First Claim
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1. A method of determining a position of an introducer in a patient relative to a heart, comprising:
- inserting a first end of the introducer into the patient, wherein the introducer has an introducer position element mounted at the first end;
fixing the introducer in the patient a distance from the heart of the patient;
passing a mapping catheter assembly into a throughbore formed through the introducer into the volume and into the heart, the mapping catheter assembly including a mapping catheter position element; and
viewing a graphical representation of a determined position of the introducer position element and the mapping catheter position element on a display, wherein the determined position of the introducer position element and the mapping catheter position element is determined by evaluating an electrical property with the introducer position element and the mapping catheter position element within the patient.
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Abstract
A system to determine and illustrate a location of position element within a volume is disclosed. The position element can be used to determine the position of a portion of an instrument. The instrument can include one or both of a cannulated member and a lead member passed through the cannula.
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Citations
20 Claims
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1. A method of determining a position of an introducer in a patient relative to a heart, comprising:
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inserting a first end of the introducer into the patient, wherein the introducer has an introducer position element mounted at the first end; fixing the introducer in the patient a distance from the heart of the patient; passing a mapping catheter assembly into a throughbore formed through the introducer into the volume and into the heart, the mapping catheter assembly including a mapping catheter position element; and viewing a graphical representation of a determined position of the introducer position element and the mapping catheter position element on a display, wherein the determined position of the introducer position element and the mapping catheter position element is determined by evaluating an electrical property with the introducer position element and the mapping catheter position element within the patient. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of determining a position of an introducer in a patient relative to a heart, comprising:
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inserting a first end of the introducer into the patient, wherein the introducer has an introducer position element mounted at the first end; positioning the first end of the introducer in the patient a distance from the heart of the patient; moving an electrode having a body cover substantially cover the electrode when the electrode is in a first retracted position through a throughbore formed through the introducer, wherein the body cover defines an electrode exit opening and a portal through the body cover, wherein the portal allows access to a conductive medium in the patient when open; moving a portal cover to close the portal in the body cover to limit access of the conductive medium into the body cover; evaluating an electrical property with the introducer position element and the electrode to determine a position of the first end of the introducer within the patient based on the evaluated electrical property and a position of the electrode; and viewing a graphical representation of the determined position of the introducer position element and the electrode on a display. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A system of determining a position of an instrument introducer in a patient relative to a heart, comprising:
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an instrument introducer including a substantially rigid elongated body member having an outer wall, a first end, a second end, and a bore extending through the elongated body member between the first and second ends, the first end adapted to be inserted into a volume of the patient with the second end remaining accessible from outside of the volume; an introducer position element affixed to an exterior surface of the outer wall and to contact a conductive medium in the volume upon insertion of the first end into the volume, the position element arranged to sense an electrical property and provide data indicative of a position of the instrument introducer; a lead having a body cover and a lead electrode extendable from a retracted position to an extended position through an exit opening of the body cover, wherein the body cover further includes a portal positioned a distance from the exit opening that is operable to allow an electrolyte to contact the lead electrode when the lead electrode is in the retracted position, wherein the lead further includes a portal cover operably associated with the lead electrode to move to cover the portal in the body cover to substantially eliminate access to the lead electrode through the portal once the lead electrode is in the extended position through said exit opening; a position sensing unit operable to interact with the introducer position element and the lead electrode to determine an introducer position and a lead position; and a processor coupled to the position sensing unit, the lead electrode, the introducer position element and a display device, wherein the processor is operable to execute instructions to determine the position of at least one of the lead electrode or the introducer position element and display a graphical representation of the determined position of at least one of the instrument introducer or the lead on a display device. - View Dependent Claims (19, 20)
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Specification