US 8,137,349 B2 · Intrabody distraction device with a screw working in traction

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.

Claims15

Dependent claims

An intra-corporal expandable device comprising a first elongated part (1), a second part (2) mounted telescopically relative to the said first part (1), first links (61) for attaching to an organism at a first end (11) of the said first part (1), second links (62) for attaching to the organism at a first end (21) of the said second part (2), a rod (3) with at least 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 connections between these components wherein the said rod (3) is mounted 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), so that the rod (3) is under traction when the device is in operation.

A distraction device, comprising:

a first elongated part having a first end and a second end, the first end opposite the second end;
a second part mounted telescopically with respect to the first part, the second part having a first end and a second end, the first end of the second part being opposite the second end of the second part, the second part oriented such that as the second part telescopes outward from the first part, the second end of the second part moves toward the second end of the first part;
a first connector at a first end of the first part, for connecting to a body;
a second connector at a first end of the second part, for connecting to the body;
a rod comprising a first thread and mounted between the second end of the first part and the second end of the second part, the rotation of which rod causes displacement of the second part relative to the first part;
and
a rotation controller for controlling rotation of the rod;
wherein the rod is in tension when the device is in operation.

5 more elements

Dependencies are inferred from the claim text.

Intrabody distraction device with a screw working in traction

Life of this patent

Intrabody distraction device with a screw working in traction

Life of this patent

Abstract

Claims15