Surgical Distractor with Locking Coupling Elements

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Solution Overview

Problem

In orthopedic surgeries, maintaining the desired displacement of tissues during procedures like osteotomies is challenging due to the need for a surgeon to manually hold the displacement tool, which limits the ability to perform other tasks simultaneously.

Innovation Solution

A surgical distractor with holder sections coupled using coupling elements, allowing for controlled displacement and locking of tissue-engaging elements, enabling the surgeon to maintain a predetermined tissue displacement without continuous manual intervention.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a surgeon manually holds the elevator to maintain tissue displacement, then the desired displacement can be maintained, but the surgeon cannot perform additional tasks simultaneously and surgical efficiency is reduced

Engineering Contradiction:
Improvemaintenance of tissue displacementVSAvoidsurgical efficiency
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The distractor device is designed to maintain tissue displacement automatically without requiring continuous manual intervention. The device includes a holder section with a tissue-engaging element that can be positioned and locked to maintain the desired displacement, allowing the surgeon to perform other tasks simultaneously. The self-adjusting mechanism ensures the displacement is maintained through the procedure without the surgeon needing to constantly hold the tool.

Inventive Principle:
Principle #25Self-service

2Reliability

If a surgeon uses both hands to hold the elevator for displacement, then the displacement can be maintained, but it becomes difficult to maneuver in the confined space of a surgical theater

Engineering Contradiction:
Improvemaintenance of tissue displacementVSAvoidmaneuverability in confined space
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The distractor device is divided into multiple sections including a holder section, coupling elements, and a tissue-engaging element. This segmentation allows the device to be manipulated more easily in confined spaces while still providing stable displacement maintenance. The modular design enables the surgeon to position and adjust different parts of the device independently, improving maneuverability without compromising the reliability of tissue displacement.

Inventive Principle:
Principle #1Segmentation

3Manufacturing precision

If a surgeon manually maintains tissue displacement during osteotomy procedures, then the displacement can be controlled, but the surgical procedure becomes time-consuming and complicated

Engineering Contradiction:
Improvecontrol of tissue displacementVSAvoidsurgical time
Core Design Contradiction:
Manufacturing precisionVSLoss of time

Solution Approach 1:

The distractor device allows the surgeon to pre-position the tissue-engaging element to achieve the desired displacement before the osteotomy procedure begins. The device includes positioning mechanisms that enable the surgeon to set the exact displacement needed, and then lock it in place. This preliminary positioning eliminates the need for continuous manual adjustment during the procedure, maintaining precision while significantly reducing the time required.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS12274431B2Surgical distractor and methods of manufacture and use
Publication Date: 2025.04.15 WRIGHT MEDICAL TECHNOLOGY INC
  • US12274431B2 patent drawing
  • US12274431B2 patent drawing
  • US12274431B2 patent drawing

AI summary

Surgical instruments, such as distractors and methods of manufacture are provided for maintaining a displacement of bone determined to be necessary by a surgeon. For instance, a surgical distractor may include a first holder section, a second holder section, a first displacement element, a second displacement element, a positioning element, and a rotatable component having an opening. The second holder section may be coupled to the first holder section using one or more coupling elements coupled to both the first holder section and the second holder section. The first displacement element and the positioning element may be positioned on the first holder section and the second displacement element and the rotatable opening may be positioned on the second holder section configured to engage the first displacement element.