摘要:
A controller operates in different operating modes to control movement of a distal tip of a medical instrument when inserting and retracting the medical instrument through linked body passages. When inserting the medical instrument, the controller normally operates in an automatic navigation mode unless manually overridden to operate in a manual mode. When retracting the medical instrument, the controller normally operates in a zero-force mode to allow the distal tip to freely move so that it may comply with the shape of the passages as the medical instrument is being retracted through the linked body unless manually overridden to operate in a manual mode.
摘要:
A medical system including a catheter or other flexible structure uses a combination of two different sensor systems to measure a pose of a section or tip of the catheter or flexible structure. The first sensor system, which may include an electromagnetic sensor, can measure a pose of a first section of the catheter, and the second sensor system can measure a pose of the second section relative to the first section. The second sensor system may employ a technology such as fiber shape sensing that permits the second section to be smaller than the first section, so that a distal tip of the catheter or flexible structure can fit within smaller natural lumens.
摘要:
A medical system including a catheter containing a mechanical system that is remotely operable uses a sensor to at least partly measure a pose of the catheter and a control system coupled to the mechanical system. The control system has multiple operating modes including one or more holding modes in which the control system operates the mechanical system to maintain a working configuration of the catheter based on feedback from the sensor.
摘要:
A medical system includes a catheter and a vision probe that can be removed from the catheter and replaced with a medical probe. Functionality for the system is divided between the catheter and the vision probe. In particular, the removable vision probe can provide imaging, illumination, irrigation, and suction that may be employed before a medical probe is deployed. The catheter can include actuation and sensing structures that are useful with or necessary for both vision and medical probes. Accordingly, the catheter can maximize available space for probes and still provide all necessary functions for use of a medical probe when the vision probe is removed.
摘要:
A medical system including a catheter containing a mechanical system that is remotely operable uses a sensor to at least partly measure a pose of the catheter and a control system coupled to the mechanical system. The control system has multiple operating modes including one or more holding modes in which the control system operates the mechanical system to maintain a working configuration of the catheter based on feedback from the sensor.
摘要:
A medical system includes a catheter and a vision probe that can be removed from the catheter and replaced with a medical probe. The vision probe can thus be used to steer and pose the catheter, and then be removed and replaced with the medical probe when a medical task such as a lung biopsy is performed. A sensor system in the catheter at least partly measures a pose of the catheter, and control logic controls actuation of the catheter to maintain the desired working configuration when the medical probe is used. A small diameter catheter can thus provide vision and biopsy functionality.
摘要:
A medical system provides navigation assistance to a surgeon so that the surgeon may navigate a flexible medical device through linked passages of an anatomical structure to a target in or adjacent to the anatomical structure. As the medical device moves through the linked passages, images are captured by an image capturing element at its distal end and pose and shape information for the medical device are received from sensors disposed in the medical device. A 4-D computer model of the anatomical structure is registered to the medical device using one or both of 4-D shape registration and virtual camera registration so that the captured image and a virtual image generated from the perspective of a virtual camera are registered to each other and displayed while providing an indication of a navigational path to the target.
摘要:
A shape-sensing segment traverses through at least a portion of a kinematic chain of a tele-operated slave surgical instrument in a tele-operated minimally-invasive surgical system. The shape-sensing segment includes a pre-set perturbation. Shape information from the pre-set perturbation allows determination of relative partial-pose information for at least one link in the kinematic chain.
摘要:
A medical system provides navigation assistance to a surgeon so that the surgeon may navigate a flexible medical device through linked passages of an anatomical structure to a target in or adjacent to the anatomical structure. As the medical device moves through the linked passages, images are captured by an image capturing element at its distal end and pose and shape information for the medical device are received from sensors disposed in the medical device. A 4-D computer model of the anatomical structure is registered to the medical device using one or both of 4-D shape registration and virtual camera registration so that the captured image and a virtual image generated from the perspective of a virtual camera are registered to each other and displayed while providing an indication of a navigational path to the target.
摘要:
A medical system provides navigation assistance to a surgeon for navigating a flexible medical device through linked passages of an anatomical structure to a target area. For tracking, navigation, and other purposes, information of extrema is determined during expansion and contraction cycles of an object by receiving time sampled information from sensors distributed along a length of a flexible device so as to indicate the shape of the device over time while the device extends through a lumen of the object so as to conform to and resemble the shape of the lumen, displacements over time of a selected point at a selected insertion length of the flexible device into the lumen of the object relative to a reference point are determined, extrema time points are determined by identifying sign changes of the slope of the determined displacements over time, and extrema types are determined using extrema type characteristics.