US 2023/0145104 A1Published application

Design and method for proximal and distal screw fixation in intramedullary tibial nails

OwnerJordan Andre BAUERinventor

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Abstract

An IM tibial nail aiming guide for providing proximal and distal screw fixation in an intramedullary nailing (IMN) of a tibia includes an attachment that connects and disconnects easily from a jig's proximal handle. Specifically, the IM tibial nail aiming guide functions as an aiming guide for accurate fixation of all the respective proximal and distal screw holes in a tibial nail. The IM tibial nail aiming guide has a length and angle that are adjustable, affording the ability to use this IM tibial nail aiming guide with any tibial nail. This IM tibial nail aiming guide is made of radiolucent material that allows for a confirmatory fluoroscopic imaging to verify that both the proximal and distal screws are fixated appropriately. The IM tibial nail aiming guide permits a more accurate, safe, versatile, and efficient approach to tibial IMN.

Claims20

Dependent claims

An intramedullary (IM) tibial nail aiming guide for coupling to an IM tibial nail having proximal and distal holes for receiving proximal and distal screws and also having an IM tibial nail proximal insertion handle, comprising:

a proximal aiming guide having proximal guide holes passing through for accurate drilling and receiving proximal screws for coupling to proximal holes in an IM tibial nail, and having an IM tibial nail coupling portion configured to couple to the IM tibial nail proximal insertion handle when the IM tibial nail aiming guide is connected to the IM tibial nail;
proximal hinge joints configured to couple to the proximal aiming guide and angle and lock the proximal aiming guide in relation to the IM tibial nail to be inserted into the medulla of the patient's tibia;
a distal aiming guide having distal guide holes for accurate drilling and receiving distal screws for coupling to distal holes in the IM tibial nail;
and
distal hinge joints configured to couple to the distal aiming guide and angle and lock the distal aiming guide in relation to the IM tibial nail to be inserted into the medulla of the patient's tibia;
and
telescopic support bars configured to couple the proximal hinge joints and the distal hinge joints and to expand or contract and lock adaptively in order to change the length between the proximal aiming guide and the distal aiming guide to accommodate different tibial nails having different tibial nail lengths.

4 more elements

A method for coupling an intramedullary (IM) tibial nail aiming guide to an IM tibial nail having proximal and distal holes for accurate drilling and receiving proximal and distal screws and also having an IM tibial nail proximal insertion handle, comprising:

configuring a proximal aiming guide with proximal guide holes passing through for accurate drilling and receiving proximal screws for coupling to proximal holes in an IM tibial nail, and with an IM tibial nail coupling portion configured to couple to the IM tibial nail proximal insertion handle when the IM tibial nail aiming guide is connected to the IM tibial nail;
coupling proximal hinge joints to the proximal aiming guide to angle and lock the proximal aiming guide in relation to the IM tibial nail to be inserted into the medulla of the patient's tibia;
configuring a distal aiming guide with distal guide holes for accurate drilling and receiving distal screws for coupling to distal holes in the IM tibial nail;
coupling distal hinge joints to the distal aiming guide to angle and lock the distal aiming guide in relation to the IM tibial nail to be inserted into the medulla of the patient's tibia;
and
coupling telescopic support bars to the proximal hinge joints and the distal hinge joints to expand or contract and lock adaptively in order to change the length between the proximal aiming guide and the distal aiming guide to accommodate different tibial nails having different tibial nail lengths.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/980,832Filed 4 Nov 2022
Priority: 5 Nov 2021
Published: 11 May 2023
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

A61B 17/90
Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices: guides therefor
A61B 17/8872
Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices: instruments for putting said…
A61B 90/11
For stereotaxic surgery, e.g. frame-based stereotaxis: with guides for needles or instruments, e.g. arcuate slides or ball joints
A61B 17/1725
Guides or aligning means for drills , mills, pins or wires: for applying transverse screws or pins through intramedullary nails or pins