摘要:
A system for operating a catheter having a distal end adapted to be navigated in the body, and a proximal end having a handle with a translatable control and a rotatable control for acting on the distal end of the device includes a support for receiving and engaging the handle of the catheter; a translation mechanism for advancing and retracting the support to advance and retract a catheter whose handle is received in the support; a rotation mechanism for rotating the support to rotate a catheter whose handle is received in the support; a translation operator for engaging the translatable control of a catheter whose handle is received in the support and operating the translatable control to act on the distal end of the device; and a rotation operator for engaging the rotatable control of a catheter whose handle is received in the support and operating the rotatable control to act on the distal end of the device.
摘要:
A system for moving an elongate medical device has at least one drive element for engaging and moving an elongate medical device. Various embodiments provide for moving the separate inner and outer elements of a telescoping medical device. Some systems also provide for the rotation of a rotatable distal element on a rotatable medical device or the rotation of extension element in a telescoping medical device.
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 method of navigating a medical device includes determining the location of a medical device at a point in an operating region in a subject's body, the medical device being responsive to at least one control variable to assume a desired configuration includes storing information representative of the at least one control variable being applied to the medical device at the point, and more preferably storing information representative of the at least one control variable and the device length.
摘要:
A method of turning a medical device with the assistance of an externally applied magnetic field, in a direction with a component in a plane perpendicular to the direction of the externally applied magnetic field. The method includes applying a first torque to the distal end of the medical device by creating a magnetic moment at the distal end of the medical device, and applying a second torque to the distal end of the medical device. The second torque may be created by creating a second magnetic moment in the distal portion of the device spaced from the first, by using an electrostrictive device, by using a stylette inserted into the device, by using a fluid-driven shaped tube, or otherwise.
摘要:
A method of making a compound magnet (20) that comprises a plurality of regions at least some of which have different magnetization directions. The method comprises assembling a plurality of sections (22, 24, 26, 28 and 30) of magnetizable material having a preferred direction of magnetization into a block, each section (22, 24, 26, 28 and 30) corresponding to a region or a part of a region, and the preferred magnetization direction of each section (22, 24, 26, 28 and 30) being aligned with the desired magnetization direction of its corresponding region. The sections (22, 24, 26, 28 and 30) in the assembled block are magnetized to form the compound magnet.
摘要:
An apparatus (20) for navigating a magnet tipped medical device (24) through the body includes a magnet system (22) for applying a magnetic field to the magnet tipped distal end of the medical device to orient the distal end (78) of the medical device; a computer (26) for controlling the magnet system to generate a specific magnetic field in the body part; first and second imaging devices (28) (30) connected to the computer, for providing bi-planar images of the body part through which the medical device is being navigated ; first, and second displays (32) (34) for displaying the images from the image devices; and an input device (36) for inputting points identifying the desired path of the medical device on each of the displays. The computer is programmed to determine the magnetic field necessary to control/orient the medical device on the path input on the displays.