System and method for determining sheath location
First Claim
1. A system for determining a location of an instrument within an anatomy comprising:
- a first instrument navigable within the anatomy that defines at least one lumen, and includes a proximal end and a distal end;
a second instrument received through the at least one lumen and navigable within the anatomy relative to the first instrument;
at least one electrode coupled to the distal end of the first instrument, wherein the at least one electrode is responsive to electrical activity to generate at least one signal, wherein the at least one electrode includes a first metal portion and a second polymer portion configured to be slit such that the at least one electrode is slittable from around the second instrument, wherein the first metal portion only partially surrounds the first instrument and the second polymer portion is coupled to the first metal portion;
a sensing unit to sense electrical activity within the anatomy at a location near the at least one electrode, the sensing unit in communication with the at least one electrode to receive the at least one signal;
a control module that determines, based on the sensed electrical activity and the at least one signal, the location of the first instrument.
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Accused Products
Abstract
A system for determining a location of an instrument within an anatomy is provided. The system can include a first instrument, which can define at least one lumen. The system can further include a second instrument, which can be received through the at least one lumen. The system can include at least one electrode, which can be coupled to a distal end of the first instrument. The electrode can be responsive to electrical activity to generate at least one signal. The system can include a sensing unit, which can be in contact with the anatomy to sense electrical activity within the anatomy at a location near the instrument. The sensing unit can be in communication with the electrode to receive the signal. The system can further include a control module that can determine, based on the sensed electrical activity and the signal, the location of the first instrument.
277 Citations
24 Claims
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1. A system for determining a location of an instrument within an anatomy comprising:
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a first instrument navigable within the anatomy that defines at least one lumen, and includes a proximal end and a distal end; a second instrument received through the at least one lumen and navigable within the anatomy relative to the first instrument; at least one electrode coupled to the distal end of the first instrument, wherein the at least one electrode is responsive to electrical activity to generate at least one signal, wherein the at least one electrode includes a first metal portion and a second polymer portion configured to be slit such that the at least one electrode is slittable from around the second instrument, wherein the first metal portion only partially surrounds the first instrument and the second polymer portion is coupled to the first metal portion; a sensing unit to sense electrical activity within the anatomy at a location near the at least one electrode, the sensing unit in communication with the at least one electrode to receive the at least one signal; a control module that determines, based on the sensed electrical activity and the at least one signal, the location of the first instrument. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A system for determining a location of an instrument within an anatomy comprising:
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a first electrode patch adapted to be in contact with the anatomy; a second electrode patch adapted to be in contact with the anatomy and spaced apart from the first electrode patch; a first instrument that is navigable within the anatomy relative to the first electrode patch and the second electrode patch, wherein the first instrument has an outer wall that defines at least one lumen and includes a distal end; a second instrument received through the at least one lumen and moveable relative to the first instrument and wherein the second instrument is navigable within the anatomy with a second instrument electrode relative to the first instrument, the first electrode patch, and the second electrode patch; at least one first instrument electrode coupled to the distal end of the first instrument, wherein the at least one first instrument electrode and the second instrument electrode are responsive to electrical activity to each generate at least one signal; a sensing unit in communication with the first electrode patch and the second electrode patch to generate voltage between the first electrode patch and the second electrode patch, the sensing unit in communication with the at least one first instrument electrode of first instrument to receive the at least one signal and to determine at least one impedance of the at least one first instrument electrode of the first instrument based on the at least one signal; and
a control module that determines, based on the at least one impedance of the at least one first instrument electrode of the first instrument, the location of the first instrument within the anatomy;wherein the at least one first instrument electrode further comprises; a metal portion that extends around a circumference of the first instrument on an inner surface; and a polymeric band that extends around the circumference on an outer surface; wherein the metal portion and the polymeric band are coupled through the wall of the first instrument. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A method for determining a location of an instrument within an anatomy comprising:
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providing a first instrument that includes at least one lumen and at least one electrode substantially circumscribing the at least one lumen, wherein the at least one electrode is configured to be slit; inserting a second instrument into the at least one lumen; inserting the second instrument and at least a portion of the first instrument into the anatomy; evaluating the location of the first instrument based upon a sensed electrical activity within the anatomy of the at least one electrode substantially circumscribing the at least one lumen; and slitting the at least one electrode to remove the first instrument from around the second instrument and the anatomy without removing the second instrument; wherein slitting the at least one electrode includes slitting a polymeric portion that is coupled to a metal portion, wherein the metal portion only partially surrounds the first instrument. - View Dependent Claims (23, 24)
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Specification