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US 12,702,322 B2Granted
Devices, systems, and methods for improving the accuracy and utility of imaging for cardiovascular procedures
AssigneeClph, LLC
InventorsPierre Jais, Remi Dubois, Stephen Arie Leeflang, Christian Scott Eversull
Life of this patent
Estimating the term…
Abstract
Apparatus and methods are provided for using catheters to increase the accuracy of anatomical maps in the setting of patient movement.
Claims20
A system for facilitating imaging a patient during a medical procedure, comprising:
- an electromagnetic field generator for generating an electromagnetic field around a desired region of a patient's body to provide an external reference frame;
- a first elongate member comprising a proximal end, a distal end sized for introduction into the patient's body, and a first distal portion carrying a first positional sensor;
- a second elongate member comprising a second distal portion advanceable from the first distal portion and carrying a second positional sensor such that a location of the second positional sensor is adjustable relative to the first positional sensor;
- and
- a processor coupled to the first and second positional sensors for receiving signals from the first and second positional sensors generated in response to the electromagnetic field, the processor configured to identify when the first and second positional sensors move relative to the external reference frame to identify corresponding movement of the patient's body.
2 more elements
A system for facilitating imaging of a patient's heart during a medical procedure, comprising:
- an electromagnetic field generator for generating an electromagnetic field around a desired region of a patient's body to provide an external reference frame;
- an elongate member comprising a proximal end, a distal end sized for introduction into the patient's body, and a distal portion carrying a plurality of sensors spaced apart from one another such that the sensors may be positioned within a coronary vessel;
- and
- a processor coupled to the sensors for receiving signals from the sensors to generate an internal reference frame substantially fixed relative to the coronary vessels to identify an orientation of the patient's heart within the external reference frame, the processor further configured to identify when the plurality of sensors move relative to the external reference frame to identify corresponding movement of the patient's body,
- wherein the plurality of sensors comprises a first positional sensor and a second positional sensor movable relative to the first position sensor such that a location of the second positional sensor is adjustable relative to the first positional sensor.
2 more elements
A method for maintaining a stable spatial reference frame relative to cardiac anatomy within a patient's heart, comprising:
- introducing a distal portion of an elongate member into the patient's heart such that a first sensor carried on the distal portion is positioned within a coronary sinus;
- advancing a second sensor relative to the first sensor such that the second sensor is positioned within a tributary vein to adjust a distance between the first sensor and the second sensor;
- generating an electromagnetic field that encompasses the patient's heart to provide an external reference frame;
- receiving signals from the first and second sensors to identify locations of the first and second sensors relative to the external reference frame;
- identifying when the locations of the first and second sensors move relative to the external reference frame to identify movement of the patient's heart;
- and
- compensating for movement of the patient's heart in images presented on a display.
4 more elements
Dependencies are inferred from the claim text.