公开(公告)号：US11921183B2

公开(公告)日：2024-03-05

申请号：US15553933

申请日：2016-02-25

Applicant: King's College London

Inventor： Ralph Sinkus ,  Ondrej Holub ,  Simon Lambert ,  Rachel Clough

IPC: G01R33/563 ,  A61B5/00 ,  A61B5/055 ,  G01R33/28

CPC classification number: G01R33/56358 ,  A61B5/0051 ,  A61B5/055 ,  G01R33/28 ,  G01R33/56308

Abstract: A magnetic resonance (MR) compatible transducer for magnetic resonance elastography applications has a cantilevered drive element a free end of which is arranged in use to move reciprocally, and a flexible non-conductive connection rod slidably disposed within a flexible non-conductive sleeve. The connection rod is affixed at a proximal end to the cantilevered drive element via a proximal flexible connection piece that in use accommodates the slight rotational movement of the cantilevered drive element as it reciprocates about its secured end, whilst translating the rotational reciprocation of the cantilevered drive element into a pure translational reciprocation of the connection rod within the sleeve. The distal end of the connection rod is affixed against a protrusion connected to another cantilevered driven element, upon which is mounted a piston element that in use contacts the subject. The distal end of the connection rod is provided with a distal flexible connection piece that forms the connection between the end of the connection rod and the cantilevered driven element, again to account for the pure translational movement of the rod being converted to rotational movement of the cantilevered driven element about its cantilever pivot point.

公开(公告)号：US20180172789A1

公开(公告)日：2018-06-21

申请号：US15553933

申请日：2016-02-25

Applicant: King's College London

Inventor： Ralph Sinkus ,  Ondrej Holub ,  Simon Lambert ,  Rachel Clough

IPC: G01R33/563 ,  A61B5/00 ,  G01R33/28 ,  A61B5/055

CPC classification number: G01R33/56358 ,  A61B5/0051 ,  A61B5/055 ,  G01R33/28 ,  G01R33/56308

Abstract: Embodiments of the invention provide a magnetic resonance (MR) compatible transducer for magnetic resonance elastography applications having a cantilevered drive element (54) a free end of which is arranged in use to move reciprocally, and a flexible non-conductive connection rod (62) slidably disposed within a flexible non-conductive sleeve (60). The connection rod is affixed at a proximal end to the cantilevered drive element via a proximal flexible connection piece (64) that in use accommodates the slight rotational movement of the cantilevered drive element as it reciprocates about its secured end, whilst translating the rotational reciprocation of the cantilevered drive element into a pure translational reciprocation of the connection rod within the sleeve. The distal end of the connection rod is affixed against a protrusion connected to another cantilevered driven element (56), upon which is mounted a piston element (58) that in use contacts the subject. The distal end of the connection rod is provided with a distal flexible connection piece that forms the connection between the end of the connection rod and the cantilevered driven element, again to account for the pure translational movement of the rod being converted to rotational movement of the cantilevered driven element about its cantilever pivot point.