Locatable catheter
First Claim
Patent Images
1. A locatable medical instrument insertable through a working channel of a bronchoscope, comprising:
- a sheath forming a longitudinal lumen along a longitudinal axis of the sheath; and
at least three coils embedded in a wall of the sheath along the longitudinal lumen of the sheath, the at least three coils overlying one another and having a common center point,wherein each of the at least three coils generates a signal when placed in an electromagnetic field,wherein one of the at least three coils forms a plane perpendicular to the longitudinal axis along the longitudinal lumen, andwherein the other two of the at least three coils form two planes, which are angled with respect to the longitudinal axis and approximately perpendicular to each other.
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Accused Products
Abstract
A catheter having a sensor at a distal end thereof, useable to detect and create signals from an electromagnetic field. The sensor is constructed and arranged to leave a lumen of the catheter open such that it may be used to pass instruments therethrough once a target location has been reached.
686 Citations
16 Claims
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1. A locatable medical instrument insertable through a working channel of a bronchoscope, comprising:
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a sheath forming a longitudinal lumen along a longitudinal axis of the sheath; and at least three coils embedded in a wall of the sheath along the longitudinal lumen of the sheath, the at least three coils overlying one another and having a common center point, wherein each of the at least three coils generates a signal when placed in an electromagnetic field, wherein one of the at least three coils forms a plane perpendicular to the longitudinal axis along the longitudinal lumen, and wherein the other two of the at least three coils form two planes, which are angled with respect to the longitudinal axis and approximately perpendicular to each other. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system for navigating through a branched structure, comprising:
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a sheath forming a longitudinal lumen along a longitudinal axis of the sheath; at least three coils embedded in a wall of the sheath along the longitudinal lumen of the sheath, the at least three coils overlying one another and having a common center point; and a probe extendable through the longitudinal lumen of the sheath, the probe having a first electromagnetic field sensor embedded at a distal end thereof, wherein each of the at least three coils generates a signal when placed in an electromagnetic field, wherein one of the at least three coils forms a plane perpendicular to the longitudinal axis along the longitudinal lumen, and wherein the other two of the at least three coils form two planes, which are angled with respect to the longitudinal axis and approximately perpendicular to each other. - View Dependent Claims (12, 13, 14, 15, 16)
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Specification