Elastic element for the use in a stabilization device for bones and vertebrae and method for the manufacture of such elastic element
AssigneeBiedermann Technologies GmbH & Co. KG
InventorsLutz Biedermann, Jürgen Harms, Wilfried Matthis
Life of this patent
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Abstract
A stabilization device for bones or vertebrae comprises a substantially cylindrical elastic element. The elastic element has a first end and a second end opposite to the first end. An elastic section extends between the first end and the second end. The elastic section includes at least first and second helical coils. The first and second helical coils are arranged coaxially so that the first helical coil extends at least in a portion between the second helical coil. The elastic element may form, for example, a portion of a rod, bone anchoring element, or plate.
Claims18
A stabilization device for bones or vertebrae, comprising:
- a substantially cylindrical elastic member having a first end and a second end opposite to the first end, an elastic section extending between the first end and the second end, the elastic section including at least first and second helical coils, the first and second helical coils being arranged coaxially around a coaxial bore,
- wherein the second helical coil defines a helical recess that opens into the coaxial bore in a radial direction, wherein at least a onion of the first helical coil extends in a portion of the second helical recess, and
- wherein at respective transition regions between the elastic section and the first and second ends, each of the first and second ends has a portion with an annular cross-section having an outer diameter substantial equal to a corressponding outer diameter of the elastic section at the respective transition region.
A stabilization device for bones or vertebrae, comprising:
- a substantially cylindrical elastic member having a first end and a second end opposite to the first end, an elastic section extending between the first end and the second end, the elastic section including at least first and second helical coils, the first and second helical coils being arranged coaxially, the first helical coil defining a coaxial bore and a first helical recess that opens into the coaxial bore in a radial direction, the second helical coil located in the first helical recess;
- a first bone anchoring element having a substantially U-shaped recess that forms first and second legs configured to receive the first end of the elastic member therebetween;
- and
- a second bone anchoring element having a substantially U-shaped recess that forms first and second legs configured to receive the second end of the elastic member therebetween.
Dependencies are inferred from the claim text.