Modular Wrist Tower for Orthopedic Positioning

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Solution Overview

Problem

Conventional orthopedic positioning devices for the arm, wrist, and hand are limited by their inability to apply interchangeable modular support components, leading to a need for multiple devices for different procedures, resulting in increased cost and clutter.

Innovation Solution

A modular arm positioner system with a rail clamp, removable arm support, wrist distraction tower, humeral support, and reducer attachment, allowing for various patient orientations with a single system by securing attachments to a rail clamp on a surgical table.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If conventional orthopedic positioning devices are used for different procedures, then specific positioning functions are achieved, but multiple separate devices are required leading to increased cost and clutter

Engineering Contradiction:
Improvepositioning versatilityVSAvoidnumber of devices
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The orthopedic positioning system employs a universal base unit that can accommodate multiple different positioning attachments through standardized interfaces. The base includes a vertical post with standardized attachment points and a horizontal support bar with universal mounting mechanisms, allowing the same base to support various attachments for different surgical procedures including wrist positioning, hand positioning, and arm support configurations.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The positioning system is divided into modular components: a reusable base unit and interchangeable attachments. Each attachment is a self-contained module designed to connect to the base through standardized interfaces. This segmentation allows individual attachments to be replaced or reconfigured based on procedural needs without replacing the entire positioning system.

Inventive Principle:
Principle #1Segmentation

2Reliability

If multiple independent positioner devices are used for different procedures, then specific positioning requirements are met, but additional cost and clutter are introduced

Engineering Contradiction:
Improvepositioning accuracyVSAvoidnumber of devices
Core Design Contradiction:
ReliabilityVSQuantity of substance

Solution Approach 1:

The system uses a universal base with standardized attachment mechanisms that ensure reliable and accurate positioning across different procedures. The base includes precision-engineered mounting interfaces and adjustment mechanisms that maintain positioning accuracy regardless of which attachment is used, eliminating the need for multiple specialized devices while preserving procedural-specific positioning requirements.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Adaptability or versatility

If conventional support devices are used, then basic support function is provided, but interchangeability with modular support components is lacking

Engineering Contradiction:
Improvemodular interchangeabilityVSAvoidattachment interchangeability
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

The base unit incorporates universal mounting mechanisms including standardized clamps, quick-release latches, and pre-drilled mounting holes positioned at multiple locations. These features enable attachments to be easily attached and detached without specialized tools or complex procedures, maintaining both modular interchangeability and operational simplicity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The positioning system incorporates adjustable and movable components including the horizontal support bar that can be repositioned along the vertical post, and attachments that can be rotated or adjusted to different orientations. This dynamic capability allows the system to adapt to different procedural requirements while maintaining ease of operation through smooth, tool-free adjustments.

Inventive Principle:
Principle #15Dynamics

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Enables efficient and versatile positioning of the arm, wrist, and hand for surgical, rehabilitative, or imaging procedures, reducing the need for multiple devices and enhancing procedural flexibility.

Implementation Method 1

The base includes a rod that slides vertically into a corresponding socket in the rail clamp

Methodology Applied
Scientific EffectFriction: Friction

Implementation Method 2

The tower post may include a threaded region in some embodiments. A moveable tower hanger is disposed on the tower post.

Methodology Applied
Scientific EffectThreading: Screw

Implementation Method 3

a traction gauge is disposed between the traction hanger and the traction straps allowing a provider to monitory the tensile traction forces applied to the user's arm, wrist or hand by the wrist tower apparatus

Methodology Applied
Scientific EffectTension: Tension

Data Source

PatentUS10531974B2Wrist tower
Publication Date: 2020.01.14 ARTHREX INC
  • US10531974B2 patent drawing
  • US10531974B2 patent drawing
  • US10531974B2 patent drawing

AI summary

A wrist tower attachment for an arm stabilizer device is configured for modular attachment on a support arm secured in a rail clamp mounted on a rail of an operating table. The wrist tower attachment includes a wrist tower base and a wrist tower post protruding upwardly from the wrist tower base. The support arm includes a stabilizer bar having a distal bar end, and the wrist tower attachment is secured onto the distal bar end. In some embodiments, the wrist tower attachment includes a female axial socket shaped to receive the male distal bar end. A traction bar is positioned on the wrist tower post and protrudes radially from the wrist tower post. A tension gauge is disposed on the traction bar in some embodiments.