Negative-Pressure Isolation Cabin for Interventional Patient Transfer

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Solution Overview

Problem

Existing isolation cabins do not facilitate cardiovascular intervention during patient transfer, posing a challenge in safely treating patients with infectious diseases like COVID-19 who require emergency interventional therapy.

Innovation Solution

An isolation transfer cabin equipped with negative pressure generation, filtered air intake and exhaust systems, sealed operating gloves, and a hatch mechanism with reinforcement devices, allowing for cardiovascular intervention while maintaining isolation and safety.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If existing isolation cabins are used for patient transfer, then patient isolation is achieved, but cardiovascular intervention cannot be performed

Engineering Contradiction:

Improvefunctional versatilityVSAvoidisolation effectiveness

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The isolation cabin is designed to perform multiple functions: it can isolate patients during transfer and also serve as a functional operating room for cardiovascular interventions. The cabin includes all necessary components for both isolation (negative pressure system, HEPA filters) and medical intervention (angiography equipment, catheterization tools, sterile operating capabilities), making it a universal device that eliminates the need for separate isolation and treatment facilities.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Object-affected harmful factors

If the cabin is sealed for isolation, then infection control is improved, but operational access for medical procedures deteriorates

Engineering Contradiction:

Improvecross-infection riskVSAvoidoperational accessibility

Core Design Contradiction:

Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The cabin is divided into distinct functional zones: a sterile operating area for cardiovascular procedures, a negative pressure isolation zone for infection control, and separate access points for patient entry and equipment access. This segmentation allows the cabin to maintain sealed isolation while providing targeted access points for medical operations, with each zone optimized for its specific function.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces intermediary elements such as sealed transfer hatches, isolated equipment ports, and controlled access mechanisms that mediate between the need for operational access and the requirement for sealed isolation. These intermediaries allow medical staff and equipment to interact with the patient and perform procedures while maintaining the integrity of the isolation barrier.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Reliability

If comprehensive isolation equipment is deployed, then patient safety is improved, but device complexity increases

Engineering Contradiction:

Improvepatient safetyVSAvoidsystem complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent combines multiple isolation systems (negative pressure generation, HEPA filtration, sealed structures) and medical intervention capabilities (angiography equipment, catheterization tools, sterile operating facilities) into a single integrated cabin unit. This merging reduces the overall system complexity by eliminating the need for separate isolation rooms and treatment facilities, while maintaining all necessary safety and functional requirements.

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 safe and efficient cardiovascular intervention for patients with infectious diseases by ensuring medical staff safety and reducing cross-infection risk, with improved angiography accuracy and rapid preparation for operations.

Implementation Method 1

a cabin body 1, which is provided with a negative pressure generating device 4 at one end and an air inlet at the other end

Methodology Applied

Scientific EffectNegative pressure: Pressure Gradient

Implementation Method 2

the negative pressure generating device 4 is provided with an exhaust filter device 3 at its air outlet, an intake filter device 2 is provided at the air inlet

Methodology Applied

Scientific EffectFiltration: Filter (physical)

Data Source

PatentUS12514769B2Interventional operation isolation transfer cabin

Publication Date: 2026.01.06 BEIJING TSINGHUA CHANGGUNG HOSPITAL

AI summary

An interventional operation isolation transfer cabin includes a cabin body, and a lead wire access device and a wire in/out device which two are mounted on the cabin body, the cabin body is provided with a negative pressure generating device at one end and an air inlet at the other end, the negative pressure generating device is provided with an exhaust filter device at its air outlet, and an intake filter device is provided at the air inlet. Several operating openings are provided on side walls of the cabin body, each of the operating openings is in seal connection with an operating glove, and a glove opening of at least one operating glove faces an interior of the cabin body. Equipment wires required by an interventional operation are preset through the lead wire access device, and wires added midway under a sealing condition is guaranteed through the wire in/out device.