摘要:
Systems and methods are provided for remotely navigating an elongate medical device in an operating region in a subject's body at a local procedure site, under the control of a user at a remote site. A navigation system having a controller responsive to signals from a local computer is provided. An imaging system displays an image of the operating region on a local display, and a physiology monitoring system displays information about the subject. The system utilizes a local computer for providing instructions from a local user to the navigation system controller, and a remote computer for providing instructions from a remote user to the navigation system controller. A display is provided at the remote site, and a video linking system provides a combined video display at the remote site. The system further includes an audio linking system and a data linking system for providing data communication between the remote and local sites.
摘要:
A method of controlling a remote navigation system that remotely orients the distal end of the medical device in order to navigate a medical device through a body lumen includes displaying an endoluminal image of the portion of the body lumen through which the device is being navigated, including an image of the distal end of the medical device; displaying a plurality of directional controls associated with the displayed endoluminal image; and accepting inputs of a selected direction of change of orientation of the distal tip from the directional controls and in response operating the remote navigation system to change the direction of orientation of the distal end of the medical device in the selected direction. The distal end of the device may alternatively or additionally be oriented to point toward a point corresponding to a point that the user identifies on the displayed endoluminal image.
摘要:
A method is provided for establishing contact of a medical device against a three-dimensional surface geometry within a subject body, the method comprising obtaining a three-dimensional tissue surface geometry of an anatomical region within the subject body, obtaining a target location on the surface for the device to contact, determining local surface geometry information in a neighborhood of the target location, and using this information to determine a change of at least one control variable for effecting an over-torque of the medical device to enhance contact of the device with the target surface.
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 of navigating a medical device (20) having a changeable magnetic moment within an operating region within a patient, the method includes applying a navigating magnetic field to the operating region with an external source magnet, and changing the direction of the magnetic moment in the medical device (20) to change the orientation of the medical device (20) in a selected direction within the operating region.
摘要:
A system (20) for controlling a magnetic element within a selected region of a patient's body includes a magnet assembly (24) comprising first and second mutually attracting, opposed magnet faces (36, 38) separated by a gap (40); and a magnet support (26) for supporting the magnet assembly (24) adjacent the selected region of the patient's body to apply a magnetic field within the selected region, and moving the gap (4) of the magnet assembly (24) relative to the selected region of the patient's body to change the magnetic field within the selected region; and a method of controlling a magnetic element within a selected region of a patient's body, the method comprising the controlled application of a magnetic field to the magnetic element in the selected region with a pair of mutually attracting opposed magnets (36, 38) separated by a gap (40).
摘要:
A method of identifying an elongate medical device in a two-dimensional image of an operating region includes filtering pixels meeting a predetermined intensity requirement for linear scaling, dividing the filtered pixels into groups of contiguous pixels, and selecting from the groups a group corresponding to the medical device.
摘要:
A magnet assembly comprising a magnet (20) mounted for pivoting about a first axis (A1) spaced from the magnet, and rotating about a second axis (A2) that is perpendicular to and intersects with the first axis (A1). The magnet (20) comprising a plurality of segments (22, 24, 26, 28, 30 and 32) each with a magnetization direction such that through a combination of pivoting and rotating the magnet (20) projects a magnetic field in any direction at an operating point spaced from the front of the assembly. The segmented construction with segments (22, 24, 26, 28, 30 and 32) of different magnetization directions allows small changes in the orientation of the magnet to substantially change the magnet field direction at a system operating point.
摘要:
A system and method of locally displaying multiple items of medical information from at least one remote medical system having an output display. The method includes assembling the multiple items of medical information from the output display of at least one remote medical systems into a composite display having regions corresponding to the multiple items of medical information. Video data for the composite display is communicated over a network to a local display. Video data corresponding to the regions of the display are treated differently to provide a composite display with regions of different image quality.
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.