Magnetic Field Generating Device of Interventional Cardiac Magnetic Navigation System
A magnetic field generating device and magnetic navigation technology, which is applied to surgical navigation systems, magnets, magnetic objects, etc., can solve the problems of fast magnetic field orientation and high magnetic field strength, and achieve the effects of improving response speed, reducing equipment noise, and facilitating navigation control
Active Publication Date: 2017-01-04
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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The invention has fast magnetic field orientation, high magnetic field strength, no blind area for navigation and no static magnetic shielding
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[0016] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0017] The device of the present invention includes an upper support frame 1, a lower support frame 2, a column 3, a center column 6, an electromagnet 7, an electromagnet power supply, a magnetic field detection device 14, an input control unit 10, a controller 11, a display unit 12, and a navigation area 4 and conduit 8.
[0018] Such as figure 1 As shown, the upper support frame 1 and the lower support frame 2 are two coaxial annular mechanical structures. The upper support frame 1 and the lower support frame 2 are fixed together by four columns 3 . The four columns 3 are evenly arranged along the ring direction and are parallel to the axis of the ring mechanical structure. The eight joint points formed by the upper support frame 1 , the lower support frame 2 and the four columns 3 are geometrically located on the eight vertices of the reg...
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Abstract
A magnetic field generating device for an interventional cardiac magnetic navigation system. Eight electromagnets (7) are symmetrically distributed on a four-axis oblique coordinate axis formed by four diagonal lines of a regular hexahedron, and are made of ferromagnetic materials. The upper support frame (1), the lower support frame (2), the column (3) and the central column (6) are fixed. The center of the navigation area (4) is located at the origin of the four-axis oblique coordinate system, and there is a uniform magnetic field generated by the electromagnet (7) in the navigation area (4). A permanent magnetic ring (9) is housed in the front end of the catheter (8), and the permanent magnetic ring (9) is subjected to the applied torque of the uniform magnetic field in the navigation area (4), so that the magnetic moment of the permanent magnetic ring (9) is parallel to the uniform magnetic field, Make the permanent magnet ring (9) parallel to the external magnetic field; the electromagnet power supply (13) supplies power to the electromagnet (7), and controls the magnetic field direction in the navigation area (4) by controlling the output current of the electromagnet power supply (13), thereby The direction of the end of the catheter (8) is controlled to realize navigation of the catheter (8).
Description
technical field [0001] The invention relates to a medical device, in particular to a magnetic field generating device for an interventional cardiac magnetic navigation system. Background technique [0002] Cardiac interventional surgery has been widely used clinically because of its good effect, small trauma and quick recovery. At present, most hospitals that can implement cardiac interventional surgery use manual intubation technology. Its working principle is realized by the doctor standing beside the patient and manually operating the catheter under the guidance of X-ray machine imaging. During the intubation process, the head end of the catheter is turned or bent to enter the target by pulling back the guide wire. Most of the cardiovascular diseases can be diagnosed and treated by manual cannulated cardiac interventional surgery, but for some complicated cases, manual cannulated cardiac interventional surgery is difficult to solve. For example, if some complex-shaped b...
Claims
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IPC IPC(8): H01F7/00A61B34/20
Inventor 刘建华王厚生王秋良李献昌锟李毅李兰凯
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI