3 results about "Opaque marker" patented technology

A registration fixture for use with a surgical navigation system for registration of medical images with a three-dimensional tracking space includes a base frame adapted to be mounted over a flat panel detector of an x-ray medical imaging device and a side frame having optical tracking markers and mounted to the base frame. The base frame includes a first set of radio-opaque markers embedded therein in a first predetermined pattern and arranged on a plane and a second set of radio-opaque markers embedded therein in a second predetermined pattern and likewise arranged on another plane, the second set of radio-opaque markers being spaced apart from the first set of radio-opaque markers. The side frame has a plurality of optical tracking markers and is configured to be detachably mounted to the base frame without piercing a sterile drape to be interposed between the base frame and the side frame.

The application relates to the technical field of medical devices, and discloses a radiofrequency ablation guide wire system for opening a chronic total occlusion of a blood vessel. The system comprises a radiofrequency guide wire, a monitoring device, a control device, a feedback device and a radiofrequency generator. The radiofrequency guide wire has a movable electrode and a return electrode composed of a plurality of expandable and contractible return sub-electrodes. The monitoring device monitors the current, impedance and temperature of each return sub-electrode in real time. The control device judges the positional relationship of the electrodes and adjusts the radiofrequency output according to the monitoring data. The feedback device provides a position adjustment prompt in the form of sound, light or visual display. The system can further comprise functional components such as a snaring structure, a radio-opaque marker and a hollow inner core. The application improves the precision, safety and operation convenience of chronic total occlusion interventional treatment, reduces the dependence on X-ray contrast, simplifies the surgical procedure, and has a wide clinical application prospect.

The invention relates to a marker body (10) for marking breast tissue for radiotherapy. The marker body (10) has an at least partly tube-like body (12) which is made from a soft elastic material and carries multiple radio-opaque marker elements (18). The at least partly tube-like body (12) is designed so that it offers hardly any resistance to an external, deforming force, but returns to its original shape in the absence of external forces. The at least partly tube-like body (12) has two free longitudinal ends (14, 16) which can be detachably interconnected or are interconnected, resulting in a tubular ring.