Portable Bone Cement Vacuum Mixing for Compact Surgical Use

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing vacuum mixing devices for bone cement are bulky and non-portable, limiting their use to open spaces, require substantial manual effort, and have complex structures that complicate cleaning, leading to suboptimal mixing outcomes and inefficient surgical deployment.

Innovation Solution

A portable vacuum mixing device with a detachable extraction housing and mixing housing, equipped with a miniature vacuum pump, a bone cement mixing unit, and automated components for efficient mixing and discharge, featuring a compact design and simplified cleaning process.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a traditional vacuum mixing device is used, then vacuum mixing capability is achieved, but the device becomes bulky and non-portable

Engineering Contradiction:

Improvevacuum mixing capabilityVSAvoiddevice portability

Core Design Contradiction:

ReliabilityVSWeight of moving object

Solution Approach 1:

The device is divided into separate modules: a reusable extraction housing containing the vacuum pump and a detachable mixing housing containing the mixing chamber. This segmentation allows the bulky vacuum generation components to be separated from the mixing function, enabling portable vacuum mixing while maintaining reliable vacuum capability.

Inventive Principle:

Principle #1Segmentation

2Device complexity

If manual mixing is used, then device simplicity is maintained, but substantial physical burden is imposed on the operator

Engineering Contradiction:

Improvemixing mechanism simplicityVSAvoidoperator physical burden

Core Design Contradiction:

Device complexityVSEase of operation

Solution Approach 1:

The manual mechanical mixing action is replaced with an automated mixing mechanism driven by the vacuum system. The vacuum pump creates negative pressure that automatically draws materials into the mixing chamber and facilitates mixing, eliminating the need for manual stirring while reducing operator physical burden.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Productivity

If a complex mixing structure is used, then mixing functionality is enhanced, but the cleaning process becomes cumbersome

Engineering Contradiction:

Improvemixing functionalityVSAvoidcleaning complexity

Core Design Contradiction:

ProductivityVSEase of manufacture

Solution Approach 1:

The mixing chamber is extracted as a separate detachable component from the extraction housing. This allows the mixing chamber to be easily removed and cleaned independently after use, simplifying the cleaning process while maintaining effective mixing functionality through the integrated vacuum system.

Inventive Principle:

Principle #2Taking out (Extraction)

4Reliability

If external auxiliary means are used, then vacuum pumping capability is achieved, but the device cannot be deployed in confined spaces

Engineering Contradiction:

Improvevacuum pumping capabilityVSAvoiddevice compactness

Core Design Contradiction:

ReliabilityVSVolume of moving object

Solution Approach 1:

The vacuum pump, mixing chamber, and material delivery system are merged into a single integrated portable device. The extraction housing and mixing housing are connected to form a compact unit that provides complete vacuum mixing functionality without requiring external auxiliary equipment, enabling deployment in confined surgical spaces.

Inventive Principle:

Principle #5Merging (Combining)

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 mixing of bone cement within confined surgical spaces, reduces manual labor, and streamlines cleaning by allowing detachment and rinsing of the mixing chamber, enhancing user convenience and mixing quality.

Implementation Method 1

The vacuum mixing device is provided with at least one cylinder, a mixing component, a receiving seat, an opening mechanism, a pump, and connecting piping

Methodology Applied

Scientific EffectVacuum: Vacuum

Implementation Method 2

a liquid raw material extraction rod is slidably and sealingly connected into the liquid raw material storage cavity

Methodology Applied

Scientific EffectSuction: Suction

Data Source

PatentUS20260069336A1Portable vacuum mixing device for bone cement during surgery

Publication Date: 2026.03.12 THE FOURTH MEDICAL CENT OF THE CHINESE PEOPLES LIBERATION ARMY GENERAL HOSPITAL

AI summary

A portable vacuum mixing device for bone cement during surgery, includes an extraction housing and a mixing housing. A miniature vacuum pump is fixedly connected to an upper end of the extraction housing, a powder raw material inlet is provided at a position of the upper end of the extraction housing close to the miniature vacuum pump, and a liquid raw material storage cavity is formed inside the extraction housing. A mixing chamber is provided inside the mixing housing, and a bone cement mixing unit is provided inside the mixing housing. The device is compact and portable, allowing for its use directly within the operating room during an ongoing surgery. Moreover, by employing the bone cement mixing unit, the device significantly reduces manual labor intensity. Owing to the implementation of vacuum mixing, the device achieves a better mixing effect.