摘要:
An automated system for navigating a medical device (22) through the lumens and cavities in an operating region in a patient is described. The system includes an elongate medical device (22), having a proximal end (24) and a distal end (26) adapted to be introduced into the operating region. The system (20) also includes an imaging system (30) for displaying an image (32) of the operating region, including a representation of the distal end (26) of the medical device (22) in the operating region. The system (20) also includes a localization system (40) for determining the position of the medical device (22) in a frame of reference translatable to the displayed image of the imaging system. Finally, the system (20) includes a system for orienting the medical device (22) in a selected direction in the operating region, this system may be, for example, a magnetic navigation system (50) which acts through the interaction of magnetic fields associated with the medical device (22) inside the operating region and at least one external source magnet outside the patient's body.
摘要:
An electrophysiology catheter includes a tube having a proximal end, a distal end, and a lumen therebetween. The tube is preferably comprised of multiple sections of different flexibility, arranged so that the flexibility of the catheter increases from the proximal end to the distal end. There is a first generally hollow electrode member at the distal end. At least one magnetically responsive element is disposed at least partially in the hollow electrode, for orienting the distal end of the catheter with an externally applied magnetic field.
摘要:
A method for controlling a remote navigation system to navigate a medical device in an operating region in a subject is provided, comprising operating the remote navigation system to bring a sensor carried on a medical device successively into a plurality of locations in a predetermined pattern, and using the sensor to sense a physiological property of the subject in each location. At least once thereafter, the method operates the remote navigation system to bring a sensor carried on a medical device successively into a series of locations in a predetermined pattern relative to at least one location selected from the predetermined pattern in the immediate preceding step based upon the sensed physiological property value, and uses the sensor to sense the physiological property in each location.
摘要:
An interface for remotely controlling medical device in a patients body provides a two dimensional display (24) of a three dimensional image of the operating region, and allows the user to select (26) the orientation of distal end of the medical device on the display and then operate a navigation system to cause the distal end of the medical device to assume the selected orientation.
摘要:
A navigation system (57) for minimally invasive surgery incorporating means of automatic electronic identification of automatically actuated flexible medical device (51) characteristics, communication of such information to a navigation control system (57) and its use in an automatic actuation system (54) that is used to accurately control navigation of the flexible medical device (51) within a patient's anatomy by the use of a physics-based model of flexible device (51) response to automatically applied actuations in order to efficiently access specified regions targeted for therapy delivery.
摘要:
A method of localizing a device, medical or otherwise, within a three dimensional environment, the method comprising: a) transmitting time varying magnetic fields from at least three transmitters (502), b) receiving the transmitted electromagnetic radiation as induced voltage signals from at least one receiver mounted on or within said device (503), and c) processing the received voltage signals in order to extract position and orientation localization information for the device (504-507), the processing including correction for conducting materials in the vicinity by the use of information gathered from at least three distinct transmission frequencies for each of the transmitters.