Expandable Bone Stabilization Assembly with Deployment Mechanism

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Solution Overview

Problem

Current bone implantation and stabilization assemblies face challenges such as lack of rotation and longitudinal stability, risk of fracture site collapse, and difficulty in removing or changing fixation devices due to their rigid structure and potential for bone infection.

Innovation Solution

The development of an orthopedic device with a body having a first and second body region and an anchor region, where linear movement of an actuator within the body causes the second body region to displace, deploying anchoring elements outwardly to stabilize bones or bone segments, and a deployment device for easy deployment and undeployment of these assemblies.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If conventional intramedullary fixation nails with rigid structure are used, then stability is improved, but ease of removal and adaptability deteriorate

Engineering Contradiction:

ImprovestabilityVSAvoidease of removal

Core Design Contradiction:

Stability of the object's compositionVSAdaptability or versatility

Solution Approach 1:

The fixation device transitions from a static rigid structure to a dynamic expandable structure. The nail can be inserted in a compressed state and then expanded within the bone cavity to provide stable fixation, while maintaining the capability for controlled deployment and removal

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The fixation device is divided into segmented components including the nail body, anchoring elements, and deployment mechanism. This segmentation allows independent control of insertion, expansion, and removal functions

Inventive Principle:

Principle #1Segmentation

2Stability of the object's composition

If additional screws are applied through bone walls for locking, then stability is improved, but device complexity and operation time increase

Engineering Contradiction:

ImprovestabilityVSAvoidoperation complexity

Core Design Contradiction:

Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The locking function is merged into the nail structure itself through integrated anchoring elements that deploy from the nail body. This eliminates the need for separate locking screws applied through bone walls, simplifying the overall procedure

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The nail performs its own locking function through self-deploying anchoring elements that engage with the bone cavity walls automatically during the expansion process, without requiring additional external locking components

Inventive Principle:

Principle #25Self-service

3Reliability

If conventional fixation devices are used, then initial stabilization is achieved, but risk of infection and bone damage during removal increases

Engineering Contradiction:

Improvestabilization reliabilityVSAvoidinfection risk

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The device is designed for complete removal and recovery after serving its fixation purpose. The expandable structure allows for controlled collapse and extraction, minimizing bone damage and reducing the risk of introducing contamination during removal procedures

Inventive Principle:

Principle #34Discarding and recovering

Data Source

PatentUS9795428B2Bone implantation and stabilization assembly including deployment device

Publication Date: 2017.10.24 CORELINK LLC

AI summary

The present disclosure provides for improved bone implantation and stabilization assemblies, and improved systems/methods for deploying and/or undeploying such bone implantation and stabilization assemblies. More particularly, the present disclosure provides for improved devices, systems and methods for stabilizing bones and/or bone segments. In exemplary embodiments, the present disclosure provides for improved devices, systems and methods for deploying bone implantation and stabilization assemblies into bone tissue (e g., spinal structure, vertebrae, cancellous bone, cortical bone, etc.) in order to stabilize bones and/or bone segments.