The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 16, 1999
Filed:
Aug. 11, 1997
Alessandro Carrozzi, La Spazia, IT;
Esaote S.p.A., Monferrato, IT;
Abstract
Electromagnetic shielding device for nuclear magnetic resonance apparati, having a cavity (5) with at least one or more openings for introducing the body (K) or the part thereof under examination, which cavity (5) is defined by at least one magnet (1) for generating a static field, one or more coils for generating a magnetic field gradient (2), one or more coils (3) for generating spin-exciting radio-frequency pulses, and one or more coils (4) for receiving echo signals. The transmitting (3) and receiving coils (4) are contained in an electromagnetic shielding structure (7, 7', 7'), at the openings of the detection cavity (5), whereat the shielding structure may be closed by removable shielding elements (9, 10, 18, 20), electrically connectable thereto. According to the invention, the elements (9, 10, 18, 20) for closing the shield (7, 7', 7') are at least partially provided with openings for the passage of body parts or define openings for the passage of body parts (K), and may be fastened or compressed, with a predetermined force, against said body parts (K), in such a way as to close the opening and generate a safe low-impedance electrical contact between the body (K) and said closing elements (9, 10, 18, 20).