Convertible Bone Fixation Screw Receiver Design

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Solution Overview

Problem

Conventional bone fixation screw devices with closed-type receivers face interference issues during surgery due to their design, which complicates procedures and requires separate production of closed and open types based on user preference.

Innovation Solution

A bone fixation screw structure featuring a receiver with open and closed sides, where the closed type can be easily converted to an open type by cutting a concave cutout, preventing interference and allowing unified production.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If a closed-type receiver is used to prevent deformation during surgery, then structural stability is improved, but interference with rod or insert component occurs making surgery difficult

Engineering Contradiction:

Improvestructural stabilityVSAvoidsurgical operation ease

Core Design Contradiction:

Stability of the object's compositionVSEase of operation

Solution Approach 1:

The receiver is designed with a convertible structure that can dynamically change from closed-type to open-type configuration. The closure member can be removed or repositioned to transform the receiver between closed and open states, allowing the structure to adapt to different surgical requirements and eliminate interference issues.

Inventive Principle:

Principle #15Dynamics

2Stability of the object's composition

If conventional closed-type receiver is used, then deformation prevention is achieved, but connector remainder is left behind after cutting causing continued interference

Engineering Contradiction:

Improvedeformation preventionVSAvoidconnector interference

Core Design Contradiction:

Stability of the object's compositionVSObject-generated harmful factors

Solution Approach 1:

The closure member is designed as a separate, removable component that can be completely extracted from the receiver structure. This extraction eliminates any remaining connector portions that would cause interference, while the receiver body maintains its deformation-prevention capabilities through its structural design.

Inventive Principle:

Principle #2Taking out (Extraction)

3Adaptability or versatility

If separate production of closed type and open type receivers is performed, then user preference is satisfied, but manufacturing complexity and cost increase

Engineering Contradiction:

Improvereceiver type adaptabilityVSAvoidmanufacturing simplicity

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

A single receiver design with a removable closure member serves multiple functions: it can operate in closed-type mode for deformation prevention and be converted to open-type mode when needed. This universal design eliminates the need to manufacture separate closed and open type receivers, simplifying production while maintaining adaptability to user preferences.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS11382668B2Bone fixation screw structure

Publication Date: 2022.07.12 GBS COMMONWEALTH CO LTD

AI summary

Disclosed is a bone fixation screw structure, particularly a bone fixation screw structure including a receiver configured to provide a space in which a bone screw is inserted into the lower end thereof, a pair of openings formed at facing sides of the receiver and provided in an open form along a longitudinal direction of the receiver, and a pair of closures formed at remaining facing sides of the receiver and provided in a closed form along the longitudinal direction of the receiver, thereby enabling a user to easily change a closed-type receiver to an open-type receiver and thus fundamentally preventing interference with a rod or an insert component.