摘要:
An apparatus includes a body, a guide member, an elongate translating member, an actuator, and a force measuring feature. The guide member is coupled to and extends distally from the body, and defines a longitudinal axis. The elongate translating member is operatively coupled with the body and is slidably disposed relative to the guide member. The elongate translating member is configured to translate relative to the body between a retracted position and an extended position for accessing an anatomical passageway. The actuator is coupled to the elongate translating member, and is selectively movable relative to the body to actuate the elongate translating member between the retracted and extended positions. The force measuring feature is operatively coupled with the actuator, and is configured to detect and measure an axial force exerted on the elongate translating member by the actuator when the elongate translating member moves between the retracted and extended positions.
摘要:
Apparatus, systems, and methods for magnetic induction tomography imaging using a hand held device are provided. In one embodiment, a magnetic induction tomography (MIT) imaging system includes a hand held MIT device. The hand held MIT device includes a housing and at least one sensing unit. Each sensing unit includes a single coil. The hand held MIT device can be configured to obtain a coil measurement with the sensing unit when the single coil is placed adjacent to a specimen. The system can further include a positioning system having an optical tracking sensor and one or more reflective components mechanically supported by the hand held magnetic induction tomography device. One or more processors can be configured to determine a position and orientation of a point associated with the single coil based at least in part on a signal indicative of the position and orientation of the one or more reflective components.
摘要:
Methods and apparatus initiate a procedure performed by a probe on tissue. A signal is obtained from the probe, the signal varying with changes in a proximity of the probe to the tissue. The obtained signal is analyzed by a controller to determine whether the probe is within a predetermined distance of the tissue. The controller initiates the procedure when it is determined that the probe is within the predetermined distance of the tissue. The obtaining and analyzing may be repeated until the probe is determined to be within the predetermined distance of the tissue. The analyzing may include comparing the obtained signal to a predetermined threshold.
摘要:
Image-guided systems and methods for enhanced medical tool tracking and guidance, virtual three-dimensional imaging, and enhanced fields of view. The system includes an imaging probe configured for side-view imaging. The guide sheath includes elongated flexible body and a channel configured to accept the imaging probe and a medical tool. The image console is configured to process imaging energy acquired by the image probe during side-view imaging to generate image data and calculate a global position of a distal end of the imaging probe or a distal end of the medical tool relative to a target in a tissue during imaging of the tissue using any one of ID, 2D, and 3D sub-sets of the image data despite the target being located outside of fields of view of the imaging probe and not directly visualized by the imaging probe.
摘要:
An electromagnetic navigation device for guiding and tracking an interventional tool (40) within an anatomical region. The electromagnetic navigation device employs a guidewire (20) insertable into the anatomical region, and a hub (30) translatable and/or rotatable in conjunction with the interventional tool (40) relative to the guidewire (20). In operation, the guidewire (20) includes one or more guidance electromagnetic sensors generating guidance data informative of an electromagnetic sensing of a position and/or an orientation of the guidewire (20) relative to the anatomical region, and the hub (30) includes a tracking electromagnetic sensor (31) generating tracking data informative of an electromagnetic sensing of a position and/or an orientation of the hub (30) relative to the guidewire (20). Responsive to the electromagnetic sensing data, a navigation controller (76) controls a determination of a position and/or an orientation of the interventional tool (40) relative to the guidewire (20).
摘要:
A method comprises: storing, in a memory of a computing device, (i) a preoperative image of patient tissue obtained using a first imaging modality and registered to a first frame of reference, and (ii) anatomical data defining a plurality of neural tracts in the patient tissue; receiving, at a processor connected with the memory, a location in the first frame of reference for application of a cortical stimulator pad to the patient tissue; receiving, at the processor, a range of influence of the cortical stimulator pad; based on the location and the range of influence, selecting, at the processor, an intersected neural tract from the plurality of neural tracts, a portion of the intersected neural tract being located within the range of influence; and controlling, at the processor, the display to render the preoperative image, the location and the intersected neural tract according to the first frame of reference.
摘要:
A method performed by a computing system comprises receiving a collected set of spatial information for a distal portion of an instrument at a plurality of locations within a set of anatomic passageways and receiving a set of position information for a reference portion of the instrument when the distal portion of the instrument is at each of the plurality of locations. The method also comprises determining a reference set of spatial information for the distal portion of the instrument based on the collected set of spatial information and the set of position information for the reference portion of the instrument and registering the reference set of spatial information with a set of anatomical model information.
摘要:
A method comprises navigating a patient's anatomy with a medical instrument, the instrument comprising a sensing tool. The method further includes correlating a position of the instrument with a model of the patient's anatomy. The method further includes, while navigating the patient's anatomy, updating the model based on data obtained by the sensing tool.