Abstract: Device for displacing tissues inside the organism, e.g. bone tissues, comprising an index part (1), a transport part (2), a threaded rod, a nut (4) mounted on the threaded rod, a drive shaft and a drive connector (71, 72, 73) linking the drive shaft to the nut (4), the transport part (2) being slidably mounted with respect to the index part (1) and limited in rotation with respect to the index part (1) by a first stop (34) which cooperates with a first bracket (14, 15) of the index part, wherein the rotation of the threaded rod with respect to the index part (1) is blocked by the first stop (34), the nut (4) being free to rotate (34) with respect to the index part (1).

Abstract: A device for moving tissue inside the body, in particular bone tissue, may include a reference part, a transport part which is slidably mounted relative to the reference part; a threaded rod pivotably mounted relative to the reference part, a control shaft, driving means connecting the control shaft to the threaded rod, a connecting nut between the transport part and the threaded rod, the connecting nut being mounted onto the threaded rod and being rotatably guided relative to the reference part, and means for converting the movement of the connecting nut along the threaded rod into a movement of the transport part relative to the reference part.

Abstract: A first part (1) comprises means (11) for connection to the body and receives in a sliding manner a second part (2) that comprises means (21) for connection to the body. A permanent magnet (3) is mounted in rotation relative to the first part (1). Step-down gears (51, 52) transform its movements into a rotation, alternately in one direction and in the other, of an input shaft (41) with a gear reduction ratio. A free wheel (43) drives an output shaft (42) when the input shaft (41) turns in one direction. The output shaft (42) is blocked in the other direction by retaining means (44). Transmission means (61, 62) transform the rotation of the output shaft (42) into a displacement of the second part (2) relative to the first part (1). The invention permits the production of bone prostheses allowing growth, of intramedullary nails allowing elongation or movement of bone, of spinal distraction or compression rods, or of bone distractors or intercostal distractors, and also of implantable remote-controlled pumps.

Abstract: A device for moving tissue inside the body, in particular bone tissue, may include a reference part, a transport part which is slidably mounted relative to the reference part; a threaded rod pivotably mounted relative to the reference part, a control shaft, driving means connecting the control shaft to the threaded rod, a connecting nut between the transport part and the threaded rod, the connecting nut being mounted onto the threaded rod and being rotatably guided relative to the reference part, and means for converting the movement of the connecting nut along the threaded rod into a movement of the transport part relative to the reference part.

Abstract: An intra-corporal expandable device incorporating a screw operating under traction. A first elongated part (1) receives a second telescopic part (2). Each of these parts comprises links (61), (62) to the organism at a first end (11), (21) and is linked to a rod (3) comprising at least one thread at a second end (12) and (22). The rotation of the rod (3) controlled by means (4) causes a relative displacement of the two parts (1) and (2). The rod (3) is thus assembled between two ends (12) and (22) which come closer when the device is elongated, the length of the loaded rod (7) is reduced when the device is elongated and the length of loaded rod (7) operates only under traction. The device according to the invention is intended in particular for the production of osseous lengthening nails and growth prostheses.

Abstract: Device for displacing tissues inside the organism, e.g. bone tissues, comprising an index part (1), a transport part (2), a threaded rod, a nut (4) mounted on the threaded rod, a drive shaft and a drive connector (71, 72, 73) linking the drive shaft to the nut (4), the transport part (2) being slidably mounted with respect to the index part (1) and limited in rotation with respect to the index part (1) by a first stop (34) which cooperates with a first bracket (14, 15) of the index part, wherein the rotation of the threaded rod with respect to the index part (1) is blocked by the first stop (34), the nut (4) being free to rotate (34) with respect to the index part (1).

Abstract: This distraction device comprises a rod (1), a second rod (2) and means to control the translation of one rod relative to the other (3), so as to cause the desired distraction or compression. Each rod (1) and (2) has a first end, respectively (11) and (21), which receive means to link to a part of the organism such as hooks or screws for vertebra, ribs or the pelvis, and a second end, respectively (12) and (22), linked to the means to control the translation of one rod relative to the other (3) such that the direction of the first end (11) toward the second end (12) of the first rod (1) is roughly the same as the direction of the first end (21) toward the second end (22) of the second rod (2). The distraction device thus roughly forms a J, the bulging and rigid part of which is located outside the area concerned by the surgical treatment, facilitating its implantation.

Abstract: A first part (1) comprises means (11) for connection to the body and receives in a sliding manner a second part (2) that comprises means (21) for connection to the body. A permanent magnet (3) is mounted in rotation relative to the first part (1). Step-down gears (51, 52) transform its movements into a rotation, alternately in one direction and in the other, of an input shaft (41) with a gear reduction ratio. A free wheel (43) drives an output shaft (42) when the input shaft (41) turns in one direction. The output shaft (42) is blocked in the other direction by retaining means (44). Transmission means (61, 62) transform the rotation of the output shaft (42) into a displacement of the second part (2) relative to the first part (1). The invention permits the production of bone prostheses allowing growth, of intramedullary nails allowing elongation or movement of bone, of spinal distraction or compression rods, or of bone distractors or intercostal distractors, and also of implantable remote-controlled pumps.

Abstract: An intra-corporal expandable device incorporating a screw operating under traction. A first elongated part (1) receives a second telescopic part (2). Each of these parts comprises links (61), (62) to the organism at a first end (11), (21) and is linked to a rod (3) comprising at least one thread at a second end (12) and (22). The rotation of the rod (3) controlled by means (4) causes a relative displacement of the two parts (1) and (2). The rod (3) is thus assembled between two ends (12) and (22) which come closer when the device is elongated, the length of the loaded rod (7) is reduced when the device is elongated and the length of loaded rod (7) operates only under traction. The device according to the invention is intended in particular for the production of osseous lengthening nails and growth prostheses.

Abstract: The invention concerns a device for non-invasive locking/unlocking rotation between first (1) and second (2) components implanted in the organism comprising first locking surfaces (11) integral with the first component (1), second locking surfaces (21) integral with the second component (2), at least one locking component (3) adapted to co-operate in locked state with both said first (11) and second (21) locking surfaces and in a released state with not more than one of said surfaces (11, 21) and to shift from one state to the other under the effect of the gravitational field or of a magnetic field in at least one specific mutual angular position of the first (1) and second (2) components. Means such as a flexible conduit (411) ensure sealing conditions of the volume wherein the locking component (3) moves. The device enables the control of the elongation obtained by a rotary centro-medullar nail or a growth prosthesis.

Abstract: The invention concerns an implantable mechanical device with adjustable geometry comprising, aligned and attached, an input components (1) having a first cylinder (11), an output component (2) having two second (21) and third (22) opposite cylinders, a reference component (3) integral in rotation with part of the organism and having a fourth cylinder (31). A friction spring (7) mounted astride on the first (11) and second cylinders (21) and a second friction spring (8), wound in an opposite direction of the spring (7) mounted astride on the third (22) and fourth (31) cylinders transform the reciprocating rotation applied to the input component (1) from outside the organism through means (931) into a rotation in a direction of the output component (2) which is helically connected (51, 52) to the driven component (4) integral with part of the organism by means (911), which is thereby translated. The device enables in particular manufacture of elongation nails and spiral rods.

Abstract: The present invention relates to devices for moving a two bodies 1, 2 relative to each other. The device of the invention is essentially characterized by the fact that it comprises two parts 11, 12, a projecting portion 14 mounted to co-operate with one of the two parts, a cavity 13 formed in the other part and complementary in shape to the projecting portion 14, the two parts 11, 12 being mounted to move relative to each other in such a manner that the projecting portion 14 penetrates into the cavity 13, the projecting portion 14 forming a closed loop made of an electrically conductive material which completely surrounds a magnetic core 101 which is not completely surrounded by the mechanism 100 for interconnecting the projecting portion 14 and the first part 11. The invention is applicable in particular to a bone prosthesis, a medullary nail for lengthening bones, a rod for correcting and supporting the spinal column.

Abstract: The present invention relates to devices for moving a two bodies 1, 2 relative to each other. The device of the invention is essentially characterized by the fact that it comprises two parts 11, 12, a projecting portion 14 mounted to co-operate with one of the two parts, a cavity 13 formed in the other part and complementary in shape to the projecting portion 14, the two parts 11, 12 being mounted to move relative to each other in such a manner that the projecting portion 14 penetrates into the cavity 13, the projecting portion 14 forming a closed loop made of an electrically conductive material which completely surrounds a magnetic core 101 which is not completely surrounded by the means 100 for interconnecting the projecting portion 14 and the first part 11. The invention is applicable in particular to a bone prosthesis, a medullary nail for lengthening bones, a rod for correcting and supporting the spinal column.