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AssigneeBiedermann Technologies GmbH & Co. KG
InventorsTimo Biedermann, Berthold Dannecker
Estimating the term…
An extension device for a bone anchor is provided, where the bone anchor includes an anchoring section and a receiving part connected to the anchoring section having a central axis. The extension device includes a first sleeve with a first sleeve axis that is coaxial to the central axis of the receiving part and is configured to be coupled to and decoupled from the receiving part. The extension device further includes a second sleeve with a second sleeve axis coaxial to the central axis. The second sleeve is positioned within the first sleeve, is positionable relative to the first sleeve along the central axis, and is configured to be coupled to and decoupled from the receiving part. The extension device also includes a locking member that, in a first configuration, inhibits decoupling of the first sleeve or the second sleeve from the receiving part when the other one of the first sleeve or the second sleeve is coupled to the receiving part.
An extension device for a bone anchor, wherein the bone anchor comprises an anchoring section for anchoring to a bone and a receiving part configured to be connected to the anchoring section, the receiving part comprising two legs defining a channel for receiving a rod, the extension device comprising:
An extension device system comprising:
A method of decoupling an extension device from a bone anchor, the bone anchor comprising an anchoring section for anchoring to a bone and a receiving part connected to the anchoring section, the receiving part comprising two legs defining a channel for receiving a rod, the extension device comprising a first sleeve configured to be coupled to the receiving part, a second sleeve positionable at least partially in and movable relative to the first sleeve, wherein the second sleeve is configured to be coupled to the receiving part, and a locking member with a through bore, wherein the locking member is configured to be connected to the first sleeve and the second sleeve for moving the second sleeve axially relative to the first sleeve, wherein when the first sleeve is coupled to the receiving part, the extension device is adjustable between a first configuration wherein the second sleeve is axially spaced apart from the receiving part and the through bore of the locking member has a first minimum diameter, and a second configuration wherein the second sleeve contacts the receiving part and the locking member is radially compressed such that the through bore of the locking member has a diameter smaller than the first minimum diameter, the method comprising:
Dependencies are inferred from the claim text.