Shielded connection line for magnetic resonance tomography system

Patent metadata

Field	Value
Publication number	US-10224676-B2
Application number	US-201715602361-A
Country	US
Kind code	B2
Filing date	May 23, 2017
Priority date	May 23, 2016
Publication date	Mar 5, 2019
Grant date	Mar 5, 2019

Abstract

A shielded connection line for a magnetic resonance tomography system includes a signal conductor, a shield for the signal conductor, and a plug-in connector. The plug-in connector has a large number of connection contacts that are arranged in a two-dimensional matrix and are electrically insulated from each other in the plug-in connector. The signal conductor is in galvanic contact with a first connection contact, and three second connection contacts adjacent to the first connection contact and surrounding the first connection contact are galvanically connected to the shield.

First claim

The invention claimed is:

1. A shielded connection line usable with a magnetic resonance tomography system, the shielded connection line comprising:
at least one signal conductor and a shield configured for the at least one signal conductor; and
a plug-in connector comprising:
a number of connection contacts that are arranged in a two-dimensional matrix and are electrically insulated from each other within the plug-in connector,
wherein the at least one signal conductor is in galvanic contact with a first connection contact of the number of connection contacts
wherein three second connection contacts of the number of connection contacts, most adjacent to the first connection contact and surrounding the first connection contact, are galvanically connected to the shield,
wherein the three second connection contacts are arranged at positions that define the geometric corners of a polygon,
wherein the first connection contact is arranged in an area surrounded by the positions that define the geometric corners of the polygon and
wherein only one first connection contact is arranged in the area surrounded by the positions that define the geometric corners of the polygon.

2. The shielded connection line of claim 1 , wherein the first connection contact is arranged in a surface defined by the polygon.

3. The shielded connection line of claim 2 , wherein the polygon is a convex polygon.

4. The shielded connection line of claim 1 , wherein the at least one signal conductor comprises a plurality of signal conductors, each signal conductor of the plurality of signal conductors having a respective shield, and
wherein each signal conductor of the plurality of signal conductors is in galvanic contact with a respective first connection contact, and
wherein the three respective second connection contacts, most adjacent to the respective first connection contact and surrounding the respective first connection contact, are galvanically connected to the shield of each respective signal conductor of the plurality of signal conductors.

5. The shielded connection line of claim 4 , wherein the shields of the plurality of signal conductors are not in electrical contact with each other at the plug-in connector.

6. A magnetic resonance tomography (MRT) system comprising:
a shielded connection line comprising:
a signal conductor and a shield for the signal conductor; and a plug-in connector comprising:
a number of connection contacts that are arranged in a two-dimensional matrix and are electrically insulated from each other within the plugged-in connector, wherein the single conductor is in galvanic contact with a first connection contact of the number of connection contacts, and
three second connection contacts of the number of connection contacts, most adjacent to the first connection contact and surrounding the first connection contact, that are galvanically connected to the shield; and

a socket having third and fourth connection contacts, wherein the plug-in connector and the socket are configured, in a plugged-in state, to electrically connect the first and the third connection contacts to each other in pairs, respectively, and to electrically connect the second and the fourth connection contacts to each other in pairs, respectively,
wherein the three second connection contacts are arranged at positions that define the geometric corners of a polygon,
wherein the first connection contact is arranged in an area surrounded by the positions that define the geometric corners of the polygon and
wherein only one first connection contact is arranged in the area surrounded by the positions that define the geometric corners of the polygon.

7. The MRT system of claim 6 , wherein the socket in the plugged-in connector are configured such that, in the plugged-in state, a conductive path formed by a respective first connection contact and third connection contact is in each case surrounded by adjacent conductive paths that are formed by the respective second connection contacts and fourth connection contacts.

8. The MRT system of claim 6 , wherein a connection contact of the first connection contact, the three second connection contacts, a respective third connection contact or a respective fourth connection contact has a spring contact as the connection contact.

9. The MRT system of claim 8 , wherein the socket and plug-in connector have a restraining system having corresponding retaining elements that are arranged and configured such that, under pressure of one or more spring contacts, the retaining elements detachably fix the plug-in connector in a predetermined relative position in relation to the socket.

10. The MRT system of claim 6 , wherein the socket has planar landing surfaces as a connection contact of the third and fourth connection contacts.

11. A local coil that is usable when performing magnetic resonance tomography (MRT) comprising:
A shielded connection line which connects to the local coil comprising:
at least one signal conductor and a shield configured for the at least one signal conductor; and
a plug-in connector comprising:
a number of connection contacts that are arranged in a two-dimensional matrix that are electrically insulated from each other within the plug-in connector,
wherein the at least one signal conductor is in galvanic contact with a first connection contact of the number of connection contacts,
wherein three second connection contacts of the number of connection contacts, most adjacent to the first connection contact and surrounding the first connection contact, are galvanically connected to the shield,
wherein the three second connection contacts are arranged at positions that define the geometric corners of a polygon,
wherein the first connection contact is arranged in an area surrounded by the positions that define the geometric corners of the polygon and
wherein only one first connection contact is arranged in the area surrounded by the positions that define the geometric corners of the polygon.

12. The shielded connection line of claim 11 , wherein the first connection contact is arranged in a surface defined by the polygon.

13. The local coil of claim 12 , wherein the polygon is a convex polygon.

14. The local coil of claim 11 , wherein the at least one signal conductor comprises a plurality of signal conductors, each signal conductor of the plurality of signal conductors having a respective shield, and
wherein each signal conductor of the plurality of signal conductors is in galvanic contact with a respective first connection contact, and
wherein the three respective second connection contacts, most adjacent to the respective first connection contact and surrounding the respective first connection contact, are galvanically connected to the shield of each respective signal conductor of the plurality of signal conductors.

15. The local coil of claim 14 , wherein the shields of the plurality of signal conductors are not in electrical contact with each other at the plug-in connector.

16. A magnetic resonance tomography system comprising:
A local coil that is usable when performing magnetic resonance tomography comprising:
a signal connection with a magnetic resonance tomography system by a system, the system comprising:
a shielded connection line comprising:
a signal conductor and a shield for the signal conductor; and
a plug-in connector comprising:
 a number of connection contacts that are arranged in a two-dimensional matrix and are electrically insulated from each other within the plug-in connector,
 wherein the at least one signal conductor i

Assignees

• Hemmerlein Martin
• Kraus Wolfgang
• Kundner Thomas
• Siemens Healthcare Gmbh

Inventors

• Hemmerlein Martin
• Kraus Wolfgang
• Kundner Thomas

Classifications

• G01R33/422

  of the radio frequency field · CPC title

• G01R33/341

  comprising surface coils · CPC title

• G01R33/34007

  Manufacture of RF coils, e.g. using printed circuit board technology; additional hardware for providing mechanical support to the RF coil assembly or to part thereof, e.g. a support for moving the coil assembly relative to the remainder of the MR system · CPC title

• G01R33/36 Primary

  Electrical details, e.g. matching or coupling of the coil to the receiver · CPC title

• H01R13/6581 Primary

  Shield structure · CPC title