Abstract: A garment worn by a wearer has an exterior shell and an interior shell with various impact absorbing material between the exterior shell and the interior shell. The impact absorbing material includes multiple structures, such as rods or filaments, capable of deforming when force is applied then returning to its state prior to application of the force. In various embodiments, a rate sensitive material (RSM) is positioned in one or more locations relative to the exterior shell and the interior shell of the garment to further attenuate impacts to the garment. The RSM changes its resistance to force based on a rate at which the material is loaded.

Abstract: A mediated-reality system for surgical applications incorporates pre-operative images and real-time captured images of a surgical site into a visualization presented on a head-mounted display worn by a surgeon during a surgical procedure. The mediated-reality system tracks the surgeon's head position and generates real-time images of the surgical site from a virtual camera perspective corresponding to the surgeon's head position to mimic the natural viewpoint of the surgeon. The mediated-reality system furthermore aligns the pre-operative images with the real-time images from the virtual camera perspective and presents a mediated-reality visualization of the surgical site with the aligned pre-operative three-dimensional images or a selected portion thereof overlaid on the real-time images representing the virtual camera perspective.

Abstract: Methods and systems for intraoperatively determining alignment parameters of a spine during a spinal surgical procedure are disclosed herein. In some embodiments, a method of intraoperatively determining an alignment parameter of a spine during a surgical procedure includes receiving initial image data of the spine including multiple vertebrae and identifying a geometric feature associated with each vertebra in the initial image data. The geometric features each have a pose in the initial image data and characterize a three-dimensional (3D) shape of the associated vertebra. The method further comprises receiving intraoperative image data of the spine and registering the initial image data to the intraoperative image data. The method can then update the pose of each geometric feature based on the registration and the intraoperative image data, and determine the alignment parameter based on the updated poses of the geometric features associated with two or more of the vertebrae.

Abstract: Methods and systems for intraoperatively determining alignment parameters of a spine during a spinal surgical procedure are disclosed herein. In some embodiments, a method of intraoperatively determining an alignment parameter of a spine during a surgical procedure includes receiving initial image data of the spine including multiple vertebrae and identifying a geometric feature associated with each vertebra in the initial image data. The geometric features each have a pose in the initial image data and characterize a three-dimensional (3D) shape of the associated vertebra. The method further comprises receiving intraoperative image data of the spine and registering the initial image data to the intraoperative image data. The method can then update the pose of each geometric feature based on the registration and the intraoperative image data, and determine the alignment parameter based on the updated poses of the geometric features associated with two or more of the vertebrae.

Abstract: A mediated-reality system for surgical applications incorporates pre-operative images and real-time captured images of a surgical site into a visualization presented on a head-mounted display worn by a surgeon during a surgical procedure. The mediated-reality system tracks the surgeon's head position and generates real-time images of the surgical site from a virtual camera perspective corresponding to the surgeon's head position to mimic the natural viewpoint of the surgeon. The mediated-reality system furthermore aligns the pre-operative images with the real-time images from the virtual camera perspective and presents a mediated-reality visualization of the surgical site with the aligned pre-operative three-dimensional images or a selected portion thereof overlaid on the real-time images representing the virtual camera perspective.

Abstract: The present technology relates generally to systems and methods for mediated-reality surgical visualization. A mediated-reality surgical visualization system includes an opaque, head-mounted display assembly comprising a frame configured to be mounted to a user's head, an image capture device coupled to the frame, and a display device coupled to the frame, the display device configured to display an image towards the user. A computing device in communication with the display device and the image capture device is configured to receive image data from the image capture device and present an image from the image data via the display device.

Abstract: Systems and methods for capturing and rendering light fields for head-mounted displays are disclosed. A mediated-reality visualization system includes a head-mounted display assembly comprising a frame configured to be mounted to a user's head and a display device coupled to the frame. An imaging assembly separate and spaced apart from the head-mounted display assembly is configured to capture light-field data. A computing device in communication with the imaging assembly and the display device is configured to receive light-field data from the imaging assembly and render one or more virtual cameras. Images from the one or more virtual cameras are presented to a user via the display device.

Abstract: Methods and systems for intraoperatively determining alignment parameters of a spine during a spinal surgical procedure are disclosed herein. In some embodiments, a method of intraoperatively determining an alignment parameter of a spine during a surgical procedure includes receiving initial image data of the spine including multiple vertebrae and identifying a geometric feature associated with each vertebra in the initial image data. The geometric features each have a pose in the initial image data and characterize a three-dimensional (3D) shape of the associated vertebra. The method further comprises receiving intraoperative image data of the spine and registering the initial image data to the intraoperative image data. The method can then update the pose of each geometric feature based on the registration and the intraoperative image data, and determine the alignment parameter based on the updated poses of the geometric features associated with two or more of the vertebrae.

Abstract: A garment worn by a wearer has an exterior shell and an interior shell with various impact absorbing material between the exterior shell and the interior shell. The impact absorbing material includes multiple structures, such as rods or filaments, capable of deforming when force is applied then returning to its state prior to application of the force. In various embodiments, a rate sensitive material (RSM) is positioned in one or more locations relative to the exterior shell and the interior shell of the garment to further attenuate impacts to the garment. The RSM changes its resistance to force based on a rate at which the material is loaded.

Abstract: Medical imaging systems, methods, and devices are disclosed herein. In some embodiments, an imaging system includes (i) a camera array configured to capture intraoperative image data of a surgical scene in substantially real-time and (ii) a processing device communicatively coupled to the camera array. The processing device can be configured to synthesize a three-dimensional (3D) image corresponding to a virtual perspective of the scene based on the intraoperative image data from the cameras. The imaging system is further configured to receive and/or store initial image data, such as medical scan data corresponding to a portion of a patient in the scene. The processing device can register the initial image data to the intraoperative image data, and overlay the registered initial image data over the corresponding portion of the 3D image of the scene to present a mediated-reality view.

Abstract: Systems and methods for capturing and rendering light fields for head-mounted displays are disclosed. A mediated-reality visualization system includes a head-mounted display assembly comprising a frame configured to be mounted to a user's head and a display device coupled to the frame. An imaging assembly separate and spaced apart :from the head-mounted display assembly is configured to capture light-field data. A computing device in communication with the imaging assembly and the display device is configured to receive light-field data from the imaging assembly and render one or more virtual cameras. Images from the one or more virtual cameras are presented to a user via the display device.

Abstract: A garment worn by a wearer has an exterior shell and an interior shell with various impact absorbing material between the exterior shell and the interior shell. The impact absorbing material includes multiple structures, such as rods or filaments, capable of deforming when force is applied then returning to its state prior to application of the force. In various embodiments, a rate sensitive material (RSM) is positioned in one or more locations relative to the exterior shell and the interior shell of the garment to further attenuate impacts to the garment. The RSM changes its resistance to force based on a rate at which the material is loaded.

Abstract: A mediated-reality system for surgical applications incorporates pre-operative images and real-time captured images of a surgical site into a visualization presented on a head-mounted display worn by a surgeon during a surgical procedure. The mediated-reality system tracks the surgeon's head position and generates real-time images of the surgical site from a virtual camera perspective corresponding to the surgeon's head position to mimic the natural viewpoint of the surgeon. The mediated-reality system furthermore aligns the pre-operative images with the real-time images from the virtual camera perspective and presents a mediated-reality visualization of the surgical site with the aligned pre-operative three-dimensional images or a selected portion thereof overlaid on the real-time images representing the virtual camera perspective.

Abstract: A mediated-reality system for surgical applications incorporates pre-operative images and real-time captured images of a surgical site into a visualization presented on a head-mounted display worn by a surgeon during a surgical procedure. The mediated-reality system tracks the surgeon's head position and generates real-time images of the surgical site from a virtual camera perspective corresponding to the surgeon's head position to mimic the natural viewpoint of the surgeon. The mediated-reality system furthermore aligns the pre-operative images with the real-time images from the virtual camera perspective and presents a mediated-reality visualization of the surgical site with the aligned pre-operative three-dimensional images or a selected portion thereof overlaid on the real-time images representing the virtual camera perspective.

Abstract: Neurological implants whose surfaces have been chemically and covalently modified to impart beneficial properties to the neurological implants are described. The neurological implants possess improved biocompatibility compared to a corresponding neurological implant that lacks the chemical modification. Following implantation in a subject, the surface-modified neurological implants induce a lower-foreign body response, compared to a corresponding unmodified product.

Abstract: Drainage systems for excess body fluids and associated methods are disclosed herein. A body fluid drainage system in accordance with an embodiment of the present technology, for example, can include a catheter that has an exterior surface, a proximal portion, and a distal portion opposite the proximal portion. The body fluid drainage system can further include a valve device, a pressure sensor, and a controller operatively coupled to the valve device and the pressure sensor. The valve device can include an actuator positioned over the exterior surface of the catheter. The actuator is movable between an open position that allows body fluid flow through the catheter, a closed position that at least substantially obstructs the body fluid flow through the catheter, and intermediate positions that partially obstruct the body fluid flow through the catheter. The controller can change the position of the actuator in response to a predetermined condition of the pressure sensor.

Abstract: The present technology relates generally to protective helmets with non-linearly deforming members. Helmets configured in accordance with embodiments of the present technology can comprise, for example, an inner layer, an outer layer, a space between the inner layer and the outer layer, and an interface layer disposed in the space. The interface layer comprises a plurality of filaments, each having a height, a longitudinal axis along the height, a first end proximal to the inner layer, and a second end proximal to the outer layer. The filaments are sized and shaped to span the space between the inner layer and the outer layer. The filaments are configured to deform non-linearly in response to an external incident force on the helmet.

Abstract: The present technology relates generally to protective helmets with non-linearly deforming members. Helmets configured in accordance with embodiments of the present technology can comprise, for example, an inner layer, an outer layer, a space between the inner layer and the outer layer, and an interface layer disposed in the space. The interface layer comprises a plurality of filaments, each having a height, a longitudinal axis along the height, a first end proximal to the inner layer, and a second end proximal to the outer layer. The filaments are sized and shaped to span the space between the inner layer and the outer layer. The filaments are configured to deform non-linearly in response to an external incident force on the helmet.

Abstract: A mediated-reality system for surgical applications incorporates pre-operative images and real-time captured images of a surgical site into a visualization presented on a head-mounted display worn by a surgeon during a surgical procedure. The mediated-reality system tracks the surgeon's head position and generates real-time images of the surgical site from a virtual camera perspective corresponding to the surgeon's head position to mimic the natural viewpoint of the surgeon. The mediated-reality system furthermore aligns the pre-operative images with the real-time images from the virtual camera perspective and presents a mediated-reality visualization of the surgical site with the aligned pre-operative three-dimensional images or a selected portion thereof overlaid on the real-time images representing the virtual camera perspective.

Abstract: A mediated-reality system for surgical applications incorporates pre-operative images and real-time captured images of a surgical site into a visualization presented on a head-mounted display worn by a surgeon during a surgical procedure. The mediated-reality system tracks the surgeon's head position and generates real-time images of the surgical site from a virtual camera perspective corresponding to the surgeon's head position to mimic the natural viewpoint of the surgeon. The mediated-reality system furthermore aligns the pre-operative images with the real-time images from the virtual camera perspective and presents a mediated-reality visualization of the surgical site with the aligned pre-operative three-dimensional images or a selected portion thereof overlaid on the real-time images representing the virtual camera perspective.