6 results about "Digital subtraction angiography" patented technology

An electrophysiological medical device includes a catheter, a magnetic positioning system, and a processing unit. The catheter is inserted into the human body. The magnetic positioning system includes a magnetic field generator and a magnetic sensor. The magnetic field generator generates a magnetic field, and the magnetic sensor moves with the catheter to detect first magnetic field information indicating the catheter's position within the body. The processing unit acquires the first magnetic field information from the magnetic positioning system and generates the catheter's original position information based on this information. The processing unit also acquires relevant information from a digital subtraction angiography (DSA) device that causes magnetic interference to the magnetic positioning system, corrects the catheter's original position information based on this information, and obtains and outputs the corrected position information of the catheter. This electrophysiological medical device can specifically address the impact of DSA equipment on the positioning accuracy of the magnetic positioning system, thereby improving positioning accuracy, avoiding the impact of low positioning accuracy on diagnosis and operation, and ultimately improving medical outcomes.

This application provides a target detection method, device, electronic device, and medium based on DSA images. The method includes acquiring a digital subtraction angiography (DSA) image, inputting the DSA image into a pre-trained target recognition model, obtaining a target recognition result including a reference DSA image. The reference DSA image carries a microguidewire prediction frame and a catheter prediction frame. The microguidewire prediction frame corresponds to first identification information, and the catheter prediction frame corresponds to second identification information. The positional relationship between the microguidewire and the catheter is determined based on the reference DSA image, the first identification information, and the second identification information. According to the solution provided in this application, the positional relationship between the microguidewire and the catheter is detected by replacing manual detection with a force-tactile module using a pre-set target recognition model. This effectively improves the efficiency of real-time target detection and positioning of the catheter and guidewire, thereby reducing the response time of interventional operations by vascular interventional surgery robots.

1. Name of the designed product: medical image equipment rack. 2. Use of the designed product: used as medical equipment, for digital subtraction angiography, etc. 3. Design points of the designed product: in shape. 4. Pictures or photos that best show the design points: design 1 perspective view 1. 5. The top of the designed product is not easily visible or not visible during use, and the design top view is omitted. 6. Design 1 is designated as the basic design.

This invention provides a femoral artery compressor after DSA (Digital Subtraction Angiography) in neurosurgery, belonging to the field of medical device technology. The femoral artery compressor includes a support plate, a support frame fixedly mounted on the upper end of one side of the support plate, a fixing frame mounted on the upper end of the support frame, and a clamping component on the lower side of the fixing frame. A cavity is formed inside the support plate, and a driving component is installed within the cavity. In this design, the driving component, in conjunction with a first piston plate, effectively avoids the risks associated with excessive compression pressure. When excessive compression pressure causes a drop in the patient's lower leg temperature, the thermally expanding liquid in the cavity contracts. The driving component then drives the threaded rod and the first piston plate, introducing some air from the airbag into the piston cavity, reducing the pressure of the compression plate on the rupture site and preventing discomfort such as coldness, numbness, and pain in the lower limbs. Simultaneously, the pressure adjustment process requires no manual intervention, responds promptly, reduces the operational burden on medical staff, and ensures the safety of compression hemostasis.

This invention belongs to the field of medical image processing and analysis technology, specifically a three-dimensional vascular registration method for digital subtraction angiography (DSA) and magnetic resonance angiography (MRA). The invention includes: preprocessing DSA and MRA images to initially align the skull and eliminate intensity differences between images; segmenting blood vessels in the DSA and MRA images to remove skull and other brain tissue from the original images; initializing a three-dimensional vascular map by converting the blood vessels in the original images into a vascular map model; performing rigid registration of the blood vessels to initially align the vascular structures in physical space; and performing non-rigid registration of the blood vessels to correct vascular deformation. This invention can achieve high-precision alignment of DSA and MRA in three-dimensional space, ensuring the consistency of vascular structures and providing more accurate image support for the diagnosis, preoperative planning, and postoperative evaluation of clinical vascular diseases.