A computer that determines at least an anatomic feature of a left atrial appendage (LAA) is described. During operation, the computer generates a 3D image associated with an individual's heart. This 3D image may present a view along a perpendicular direction to an opening of the LAA. Then, the computer may receive information specifying a set of reference locations. For example, the set of reference locations may include: a location on a circumflex artery, a location between a superior portion of the LAA and a left pulmonary vein, and/or a location on a superior wall of the LAA and distal to trabeculae carneae. Next, the computer automatically determines, based, at least in part, on the set of reference locations, at least the anatomical feature of the LAA, which is associated with the opening of the LAA and a size of a device used in an LAA closure (LAAC) procedure.

A robotic surgical system for treating a patient comprises a first robotic arm configured to remotely control a surgical instrument that is positionable within a cavity of the patient; a second robotic arm configured to remotely control a device that is passable through an orifice of the patient; and a control circuit communicatively couplable to the first and second robotic arm. The first and second robotic are each attached to a surgical platform. The control circuit is configured to determine a position of the arms; cause each of the first and second robotic arm to change their respective position and orientation based on an adjustment of a platform position of the surgical platform; and control the first robotic arm and the second robotic arm to cooperatively interact to perform a surgical operation.

A surgical navigation method includes selecting one or more two-dimensional images from a three-dimensional image. The method further includes adjusting a portion of the two-dimensional images along a viewing direction. The method also includes superimposing the portion of the two-dimensional images along the viewing direction to form a two-dimensional superimposed image. The method further incudes guiding movement of a virtual surgical instrument into the two-dimensional superimposed image.

A computer-assisted imaging and localization system assists the physician in positioning surgical effecters, such as implants, tools and instruments, within a surgical site in a patient's body. The system displays overlapping images—one image of the surgical site with the patient's anatomy and another image showing the surgical effecter(s). The overlapping image of the surgical effecter(s) is moved over the static image of the anatomy as the implant/instrument is moved. The movement of the surgical effecter(s) is determined in a three-dimensional coordinate system at a home base location in the patient's anatomy, which home base can be moved during the procedure without interrupting the displays of the overlapping images.

A medical information processing apparatus according to an embodiment includes a memory storing a model that represents a relation between cell deformation and electric signal propagation; and processing circuitry configured to acquire four-dimensional image data acquired by imaging a three-dimensional structure of a cardiac muscle in time series, extract movement information on the cardiac muscle at multiple positions in the four-dimensional image data, and apply the model to the movement information with respect to the positions to calculate electric signal propagation at the positions.

A navigation system or combination of navigation systems can be used to provide one or more navigation modalities to track a position and navigate a single instrument in a volume. For example, both an Electromagnetic (EM) and Electropotential (EP) navigation system can be used to navigate an instrument within the volume. The two navigation systems may be used separately to selectively individually navigate the single instrument in the volume. Disclosed are also systems and processes to determine a shape of the single instrument either alone or in combination with the position of the instrument. The instrument may be navigated with the addition of tracking devices or with native or inherent portions of the instrument.

A method of evaluating soft tissue of a human joint which includes two or more bones and ligaments, wherein the ligaments are under anatomical tension to connect the bones together, creating a load-bearing articulating joint, the method includes: inserting into the joint a tensioner-balancer that includes a means of controlling a distraction force; providing an electronic receiving device; moving the joint through at least a portion of its range of motion; while moving the joint, controlling the distraction force, and collecting displacement and distraction load data of the bones; processing the collected data to produce a digital geometric model of the joint, wherein the model includes: ligament displacement data along a range of flexion angles and ligament load data along a range of flexion angles; and storing the digital geometric model for further use.

A roll-detecting sensor assembly includes a coil extending along and disposed about an axis. The coil comprises one or more portions, with each portion defining a winding angle. At least one of the portions defines a winding angle that is substantially nonzero relative to a line perpendicular to the axis, whereby the projected area of the coil in an applied magnetic field changes as the coil rotates about the axis. As a result, the coil is configured to produce a signal responsive to the magnetic field indicative of the roll of the sensor about the axis. In an embodiment, at least one of the portions defines a winding angle that is at least 2 degrees. In an embodiment, at least one of the portions defines a winding angle that is about 45 degrees.

An augmented reality interventional system which provides contextual overlays (116) to assist or guide a user (101) or enhance the performance of the interventional procedure by the user that uses an interactive medical device (102) to perform the interventional procedure. The system includes a graphic processing module (110) that is configured to generate at least one contextual overlay on an augmented reality display device system (106). The contextual overlays may identify a component (104) or control of the interactive medical device. The contextual overlays may also identify steps of a procedure to be performed by the user and provide instructions for performance of the procedure. The contextual overlays may also identify a specific region of the environment to assist or guide the user or enhance the performance of the interventional procedure by identifying paths or protocols to reduce radiation exposure.

A method includes receiving a three-dimensional image dataset of a surgical site of a patient. The method also includes segmenting one or more anatomical features of the surgical site based on the three-dimensional image dataset. The method also includes receiving a two-dimensional image of the surgical site of the patient and registering the two-dimensional image to an image from the three-dimensional image dataset. The method also includes displaying a two-dimensional representation of the segmented one or more anatomical features based on the registered two-dimensional image and the image from the three-dimensional image dataset.