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1. CA2655093 - INTRA-CORPORAL EXPANDABLE DEVICE INCORPORATING A SCREW OPERATING UNDER TRACTION

Note: Text based on automatic Optical Character Recognition processes. Please use the PDF version for legal matters
CLAIMS
1 - An intra-corporal expandable device comprising a first elongated part (1), a second part (2) assembled telescopically relative to the said first part (1), first links (61) to the organism at a first end (11) of the said first part (1), second links (82) to the organism at a first end (21) of the said second part (2), a rod (3) with at (east one thread, the rotation of which leads to the displacement of the said second part (2) relative to the said first part (1), means (4) for controlling the rotation of the said rod (3) and links between these components wherein the said rod (3) is assembled between two ends which come closer when the said device is elongated, the second end (12) of the said first part (1) opposite the said first end (11) of the said first part (1) and the second end (22) of the said second part (2) opposite the said first end (21) of the said second part (2). 2- An intra-corporal expandable device according to claim 1, wherein the links between the said rod (3) and the said second end (12) of the said first part (1) comprise a pivot (55), (56) and the links between the said rod (3) and the said second end (22) of the said second part (2) comprise a tapping (53) able to cooperate with the said rod (3). 3- An intra-corporal expandable device according to claim 1, wherein the links between the said rod (3) and the said second end (12) of the said first part (1) comprise a tapping able to cooperate with the said rod (3) and the links between the said rod (3) and the said second end (22) of the said second part (2) comprise a pivot. 4- An intra-corporal expandable device according to claim 1 wherein the links between the said rod (3) and the said second end (12) of the said first part (1) comprise a first tapping in a first direction and the links between the said rod (3) and the said second end (22) of the said second part (2) comprise a second tapping in the direction opposite to the said first direction and that the said rod (3) comprises a first thread able to cooperate with the said first tapping at one end, and a second thread able to cooperate with the said second tapping at the other end, - An intra-corporal expandable device according to claim 1 wherein the said means to control the rotation of the said rod (3) are comprised of at least one permanent magnet (4) assembled coupled with the said rod (3) such that its magnetisation direction is roughly perpendicular to the axis of rotation of the said rod (3) and, outside the organism, of a magnetic field source rotating roughly around the axis of the said rod (3). 6- An intra-corporal expandable device according to claim 5 wherein the speed of rotation of the said magnetic field produced by the said rotating magnetic field source is less than one revolution per minute, 7- An intra-corporal expandable device according to claim 1 wherein the diameter of the said rod (3) is less than four millimetres.