Instruments for guiding placement of implants

Inventors

Patel, ShyamKuntz, Kyle

Assignees

Cutting Edge Spine LLC

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Publication Number

US-10842511-B2

Patent

Publication Date

2020-11-24

Expiration Date


Abstract

A surgical guide assembly for selecting a target site for insertion of a fixation implant, the surgical guide used in conjunction with fluoroscopy or other x-ray-based imaging for selecting a target site into bone based upon a rendered radiographic image of the bone. The guide includes a planar radiolucent guide tool with radiopaque markers and seats for accommodating securement components that can be engaged in apertures within securement seats of the radiolucent guide tool and contacted or positioned adjacent target bone for establishing a path to a bone target to guide the placement of an implant relative to a reference point, such as a first implant. In the guide tool may include visual indicia corresponding with one or more of the securement seats.

Core Innovation

The invention relates to a radiolucent surgical guide tool for fluoroscopy-based targeting of fixation implant insertion in bone. The guide tool includes a reference securement seat and a plurality of target path securement seats arranged at different fixed distances from the reference securement seat, and each seat comprises an aperture arranged to receive tubular securement components.

The guide assembly further comprises an array of radiopaque markers arranged to correspond with the fixed distances of the target path securement seats from the reference securement seat. In the disclosed configurations, the guide tool or a portion of the guide tool comprises a movable part that comprises the array of radiopaque markers, and the array is separately movable relative to the radiolucent guide tool and/or an inserted securement component.

Selection is enabled by orientation of at least one radiopaque marker over the bone target so that a radiopaque marker aligns over a target site in bone for receiving an implant. A first securement component may be inserted into a selected reference securement seat to establish a reference path relative to bone, and a securement component may be fixed into a target path securement seat corresponding to the selected radiopaque marker to establish the selected target path for insertion of a fixation implant into the target site in the bone.

Claims Coverage

The partial set includes four independent claims. Across these claims, the coverage is centered on a radiolucent guide tool with a reference securement seat and multiple target path securement seats at fixed distances, an array of radiopaque markers corresponding to those fixed distances, and selection enabled by separately movable radiopaque markers oriented over a bone target.

Reference securement seat and target path securement seats at fixed distances with corresponding radiopaque markers

A radiolucent guide tool having a reference securement seat and a plurality of target path securement seats arranged at different fixed distances from the reference securement seat, where each seat comprises an aperture, and an array of radiopaque markers arranged to correspond with the fixed distances.

Separately movable radiopaque marker array for target path selection by marker orientation

A movable part of the radiolucent guide tool comprises the array of radiopaque markers, and the array is separately movable relative to the radiolucent guide tool and/or relative to an inserted securement component to enable selection of a target path securement seat relative to a selected bone target by orientation of at least one radiopaque marker over the bone target.

Discoid radiolucent guide tool with marker-corresponding apertures

A radiolucent guide tool having a discoid shape with first and second sides independently planar, convex or domed and a circumferential edge, comprising a reference securement seat and a plurality of target path securement seats arranged at different fixed distances from the reference securement seat, each comprising an aperture, and an array of radiopaque markers arranged to correspond with the fixed distances.

Tubular securement components insertable into selected securement seats

Two or more substantially tubular securement components, optionally comprising a proximal locking feature, each insertable into a selected reference securement seat or target path securement seat to establish a path for passage of a tool, with selection enabled by the separately movable array of radiopaque markers.

Method of placement using reference securing, radiopaque marker alignment, and selection of a target path securement seat

Selecting a surgical guide assembly with the radiolucent guide tool comprising a reference securement seat and a plurality of target path securement seats at different fixed distances with radiopaque markers corresponding to the fixed distances, inserting tubular securement components into a selected reference securement seat or target path securement seat, fixing a securement component at the reference securement seat, aligning the array of radiopaque markers over a target site, selecting a radiopaque marker corresponding to the target site, and fixing a securement component into a target path securement seat corresponding to the selected radiopaque marker to establish a target path for insertion of a fixation implant.

Radially, linearly, or spirally arrayed target path securement seats

A radiolucent guide tool with a center reference securement seat and a plurality of target path securement seats arrayed radially in one of a linear and a spiral configuration relative to the center reference securement seat at different fixed distances, each comprising an aperture through the guide tool, and an array of radiopaque markers positioned on one side arranged to correspond with the fixed distances.

Across the independent claims, the inventive concept is a radiolucent surgical guide assembly that establishes insertion paths using a reference securement seat and multiple target path securement seats at fixed distances, together with an array of radiopaque markers corresponding to those distances. The selection of a target path is enabled by separately movable radiopaque markers so that orienting a marker over a bone target identifies and enables fixing a tubular securement component into a corresponding target path securement seat.

Stated Advantages

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