US 12,232,774 B2Granted

Adjustable strut assemblies for external fixation systems

AssigneeArthrex, Inc.

InventorMichael W. Mullaney

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Abstract

Length-adjustable strut assemblies for external fixation systems, and corresponding external fixation systems, are disclosed. The strut assemblies include an elongate first and second end members, an elongate intermediate member, and first and second adjustment mechanisms. The intermediate member comprises a threaded rod fixedly coupled within an axial cavity thereof, and is rotatably fixed and axially translatably within an axial cavity of the first end member. An end portion of the second end member is received within the axial cavity of the intermediate member, and the second end member comprises an axial cavity threadably coupled with the threaded rod. The first adjustment mechanism is configured to selectively axially fix the intermediate member relative to the first end member. The second adjustment mechanism is configured to selectively rotate the second end member with respect to the threaded rod to axially translate the second end member relative to the intermediate member.

Claims26

Dependent claims

A strut assembly for an external fixation system, comprising:

an axially-elongated tubular first strut body;
an elongate intermediate member being rotatably fixed and axially translatably received within the first strut body and axially extending therefrom;
an externally threaded rod within the intermediate member being rotatably and axially fixedly coupled thereto;
an axially-elongated tubular second strut body being received within the intermediate member, wherein the rod is rotatably coupled within the second strut body, and the second strut body axially extends from the intermediate member;
a first adjustment mechanism configured to selectively axially fix the intermediate member relative to the first strut body or selectively allow the intermediate member to freely axially translate relative to the first strut body;
and
a second adjustment mechanism configured to selectively rotate the second strut body with respect to the intermediate member and the rod to selectively axially translate the second strut body relative to the intermediate member and the rod.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/807,522Filed 17 Jun 2022 · continuation
Priority: 29 Aug 2018
Published: US 2022/0313316 A16 Oct 2022
Granted: 25 Feb 2025
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

A61B 17/6475
With pin-clamps movable along a solid connecting rod: the connecting rod being threaded
A61B 17/62
For external osteosynthesis, e.g. distractors, contractors: ring frames, i.e. devices extending around the bones to be positioned
A61B 17/645
Devices extending alongside the bones to be positioned: comprising a framework
A61B 17/6458
Devices extending alongside the bones to be positioned: with pin-clamps fixed at ends of connecting element

Family

Application62/724,462Us provisional application · filed 29 Aug 2018
PCT/US2019/048931Parent of this continuation · filed 29 Aug 2019
Application17/185,460Parent of this continuation · filed 25 Feb 2021
US 2022/0313316 A1Pre-grant publication · published 6 Oct 2022
US 11,364,054 B2Parent of this continuation
US 2021/0244442 A1Published application
US 12,232,774 B2This patent

From the US filing history. Foreign family members aren’t listed.