摘要:
A biopsy device is provided comprising a tubular member, a hollow shaft and an elongated fiber body. The hollow shaft may have a distal end and a shaft, wherein a laterally (sidewardly) facing notch is formed in the distal portion of the shaft. The elongated fiber body may include at least one optical fiber, preferably at least two optical fibers, with a distal end. The tubular member is movable relative to the shaft, between a first position in which the notch is covered by the tubular member, and a second position in which the notch is not covered by the tubular member. The fiber body is movable within the shaft, between a first position in which the distal end of the optical fiber is located at the distal end of the shaft with the elongated fiber body extending through the notch, and a second position in which the distal end of the at least one optical fiber is located proximally to the notch.
摘要:
The present invention relates to operating a camera-based tracking system. In order to provide accurate tracking at an earlier stage, a control device (10) for operation of a camera-based tracking system is provided. The control device comprises a controller (12) and a control signal output (14). The controller is configured to generate at least one operation signal for the tracking system that comprises, at least during a starting phase of the tracking system, at least one calibration compensation instruction. The at least one calibration compensation instruction comprises instructions for at least one of the group of: i) actively adjusting a temperature of the camera-based tracking system, and ii) adapting a calibration-related camera output of the camera-based tracking system, which camera output is used for a tracking calculation. The control signal output is configured to provide the at least one operation signal to the tracking system. In one approach, a pre-heating is provided in order to achieve (steady) calibration state by providing a control signals to the cameras for operation in a high thermal energy production mode. In another approach, the calibration is provided as dynamic calibration model that allows a calibration also for states of the system outside the steady state.
摘要:
The present invention relates to guidance during a medical intervention. In order to provide an improved navigation support with a facilitated setup, a system (10) for navigation support is provided. An image data input (12) receives a plurality of acquired 2D X-ray CT images of a subject's body from different angles. A set of markers, which are visible in X-ray images and which are detectable by a navigation system, is assigned to the subject. A marker detecting arrangement (16) is provided that detects a current spatial location of the markers assigned to the subject. A data processor (14) reconstructs a 3D volume of the subject based on the plurality of 2D X-ray CT images. At least a part of the markers is arranged outside the volume covered by the reconstructed 3D volume of the subject, while the markers are visible in the 2D X-ray CT images. The data processor (14) identifies the markers in the 2D X-ray CT images based on image data of the plurality of 2D X-ray CT images outside the 3D volume and determines a spatial location of the markers in relation to the 3D volume of the subject. The data processor (14) also registers the reconstructed 3D volume of the subject to a current spatial position of the subject based on the detected current spatial location of the markers and the determined spatial location of the markers in relation to the 3D volume of the subject. An output interface (18) provides the registered reconstructed 3D volume for navigation.
摘要:
An orthopedic pin (100) for optically analyzing a bone region (110) includes an elongate shaft (101) and at least one optical fiber (105). The elongate shaft has a circular outer cross section with a first diameter (D1), a distal end (102) for insertion into bone, a proximal end (103), and an optical connector portion (104) disposed towards the proximal end (103). The at least one optical fiber (105) extends within the elongate shaft (101) between the optical connector portion (104), and the distal end (102) for transmitting optical radiation between the optical connector portion (104) and the bone region (110) when the distal end (102) is inserted into the bone region (110). The optical connector portion (104) comprises a reduced-diameter portion (106). The reduced-diameter portion (106) extends along at least a portion of the elongate shaft (101), and has an outer cross section comprising a width (Drd) perpendicularly with respect to the elongate shaft (101). The width (Drd) is less than the first diameter (D1).
摘要:
A system SY for determining a tissue type TY of a tissue region TR is provided in which the distal ends OFDE 1..n of at least three optical fibers define a plurality of intersecting optical paths IOP 1..k within the tissue region TR. A tissue signal Q 1..k indicative of a tissue type TY for the respective optical path IOP 1..k is generated from said spectral measurement data SMD corresponding to each of the plurality of intersecting optical paths IOP 1..k . Each tissue signal Q 1..k is compared with a reference threshold QRT for the tissue type, and with an average of the tissue signals QMA. At least a portion of the tissue region is identified as the tissue type TY if i) every tissue signal Q 1..k in the tissue region TR indicates that its corresponding tissue is not the tissue type TY in the comparison with the reference threshold QRT and ii) at least one of the tissue signals Q 1..k in the tissue region TR lies between the average QMA of the tissue signals Q 1..k and the reference threshold QRT, and a difference Δ between the at least one tissue signal Q 1..k and the average QMA of the tissue signals Q 1..k exceeds a predetermined value ΔP.
摘要:
The present invention relates to providing information of a subject during interventional procedures. In order to improve the surgeon's vision during interventions, a navigated medical imaging system (10) is provided that comprises a medical imaging arrangement (12), a navigation arrangement (14), a microscope device (16) and a controller (20). The medical imaging arrangement is configured to provide image data representing interior structures of a region of interest of a subject (22). The navigation arrangement is configured to provide relative spatial tracking of the subject, the medical imaging arrangement and the microscope device. The microscope device is configured to provide at least one image of an exterior region of interest of the subject. The microscope device is mounted to the navigation arrangement. The controller is configured to determine a target view of the microscope device and to adjust the microscope device respectively to provide images according to the target view.
摘要:
The invention relates to a system 8 for assisting a user in placing a penetrating device in tissue like a pedicle screw 7 in a vertebra's pedicle. The system generates a virtual view 20 from a penetrating device tip perspective within the tissue in the direction of a path 21 through a model of the tissue. The virtual view is generated based on tracking information indicating a pose of the penetrating device, the model and the path, wherein the virtual view is configured such that it indicates a direction in which the user should move the penetrating device while placing it in the tissue. For instance, it can show a virtual tunnel 801 which is arranged along the path. If a user like a surgeon is provided with such a virtual view, the user can position the penetrating device along the path with a significantly increased accuracy.