US 4,535,763 A · External bone-anchoring element

Abstract

Broken bones are externally anchored by various embodiments of the disclosed invention. In each of the embodiments one or more arcuate members pass around the bone to be anchored. Pins extend from the arcuate members to and may also transfix the bone to be anchored. In some embodiments, there are a plurality of arcuate members. In some of the embodiments, the arcuate members encircle the bone. Various auxiliary support pieces are attached on the arcuate members. Some of these auxiliary support pieces help anchor the arcuate members. Other of these auxiliary pieces provide additional supports for additional bone supporting pins. The pins may be held on swivel joints so that the pins may be swiveled for properly engaging a bone. The arcuate members are attached to support supports which enable the anchoring arcuate members to extend to other supporting elements.

Claims23

Dependent claims

An external bone-anchoring means comprising:

two groups of pins, each group being comprised of at least one pin, or the like, for retaining a bone portion;
first and second supporting means, each of the first and second supporting means being for supporting the pins of a respective one of the two groups of pins;
at least one assembly rod connected to each of the first and second supporting means for interconnecting the first and second supporting means;
at least one of the first and second supporting means comprising an arcuate member of polygonal cross-section connected to the assembly rod and at least one support piece on the arcuate member for supporting the pins of the respective group on the arcuate member, the at least one support piece being movably connected to the arcuate member, the connection between the arcuate member and the support piece enabling the pins of that group to be supported on the arcuate member anywhere along its length, the support piece comprising jaws having internal recesses adapted to complement at least a portion of the polygonal cross-section of the arcuate member so as to be capable of being pressed onto and immobilized on the arcuate member without being able to rotate about it or move along it.

1 more element

An external bone-anchoring means comprising:

two groups of pins, each group being comprised of at least one pin, or the like, for retaining a bone portion;
first and second supporting means, each of the first and second supporting means being for supporting the pins of a respective one of the two groups of pins;
at least one assembly rod connected to each of the first and second supporting means for interconnecting the first and second supporting means;
at least one of the first and second supporting means comprising an arcuate member connected to the assembly rod and at least one support piece on the arcuate member for supporting the pins of the respective group on the arcuate member, the at least one support piece being movably connected to the arcuate member, the connection between the arcuate member and the support piece enabling the pins of that group to be supported on the arcuate member anywhere along its length, the arcuate member being comprised of two sections thereof and an intermediate piece for interconnecting the two sections, at least one of the two sections of the arcuate member being of the arcuate length of part of a circle.

1 more element

An external bone-anchoring means comprising:

two groups of pins, each group being comprised of at least one pin, or the like, for retaining a bone portion;
first and second supporting means, each of the first and second supporting means being for supporting the pins of a respective one of the two groups of pins;
at least one assembly rod connected to each of the first and second supporting means for interconnecting the first and second supporting means;
the first supporting means comprising an arcuate member connected to the assembly rod and two support pieces on the arcuate member, the two support pieces being movably connected to the arcuate member at spaced apart locations along the arcuate length of the arcuate member, with the connections between the arcuate member and the support pieces enabling the pins of the respective one of the groups to be supported on the arcuate member anywhere along its length, the support pieces supporting the respective pins, or the like, so that the two pins supported by the two support pieces are both capable of extending to and engaging a bone for anchoring the bone from two different angular directions around the bone.

1 more element

An external bone-anchoring means comprising:

two groups of pins, each group being comprised of at least one pin, or the like, for retaining a bone portion;
first and second supporting means, each of the first and second supporting means being for supporting the pins of a respective one of the two groups of pins;
at least one assembly rod connected to each of the first and second supporting means for interconnecting the first and second supporting means;
at least one of the first and second supporting means comprising an arcuate member connected to the assembly rod, positioning means connected to the arcuate member and the respective bone portion, and at least one support piece on the arcuate member for supporting the pins of the respective group on the arcuate member, the at least one support piece being movably connected to the arcuate member, the connection between the arcuate member and the support piece enabling the pins of that group to be supported on the arcuate member anywhere along its length.

1 more element

Dependencies are inferred from the claim text.

External bone-anchoring element

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External bone-anchoring element

Life of this patent

Abstract

Claims23