Surgical Drain Sterilization via UV Sealed Container

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Solution Overview

Problem

Current surgical drains lack an effective method for cleaning and sterilization, leading to a risk of infection due to bacterial and fungal contamination, which can prolong recovery and increase hospital complications.

Innovation Solution

A device that emits ultraviolet light is used to decontaminate surgical drains by creating a sealed environment within a container, allowing ultraviolet radiation to neutralize bacteria and microorganisms on the drain tubing and bulb, thereby reducing infection risk without disrupting the drain's use.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If surgical drains are used to prevent seroma formation, then wound healing is improved, but the risk of bacterial contamination and infection increases

Engineering Contradiction:
Improvewound healingVSAvoidbacterial contamination
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent applies preliminary action by sterilizing the surgical drain with ultraviolet light before it is inserted into the patient's body. The drain is placed in a sterilization container with UV light sources that activate to sterilize the drain's exterior surface, internal chamber, and fluid ejection path beforehand, preventing bacterial contamination from the outset while maintaining the drain's infection-prevention function

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent uses an intermediary sterilization system consisting of a container with ultraviolet light sources that acts as a mediator between the drain and the patient's body. This intermediary device transfers sterilization energy to the drain without direct contact, eliminating harmful bacteria and fungi on the drain's surfaces and in its internal chambers before clinical use

Inventive Principle:
Principle #24Intermediary (Mediator)

2Duration of action of stationary object

If surgical drains remain in place for extended periods to ensure complete drainage, then seroma prevention is improved, but the infection risk increases over time

Engineering Contradiction:
Improvedrain retention timeVSAvoidinfection risk
Core Design Contradiction:
Duration of action of stationary objectVSObject-affected harmful factors

Solution Approach 1:

The system performs preliminary sterilization of the entire drain assembly including the collection chamber and ejection mechanism before insertion, creating an initial sterile state that allows the drain to remain in place longer without immediate infection risk

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent enables continuous useful action by allowing the drain to remain in place for extended periods through initial thorough sterilization, while the sealed container design prevents recontamination during use, maintaining the sterile state throughout the drainage period

Inventive Principle:
Principle #20Continuity of useful action

3Object-affected harmful factors

If closed drain systems are used to reduce infection risk, then precautions against infection are improved, but the complexity of the system increases

Engineering Contradiction:
Improveinfection preventionVSAvoidsystem complexity
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The sterilization container serves multiple functions: it stores the drain before use, provides a sealed environment for ultraviolet sterilization, and maintains sterility during transport and application. This multi-functionality reduces the need for separate sterilization equipment and procedures, simplifying the overall system while maintaining infection prevention

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

Solution Approach 2:

The sealed container acts as an intermediary that combines the sterilization function with the storage and transport function, creating a unified system that reduces complexity compared to separate sterilization and storage systems

Inventive Principle:
Principle #24Intermediary (Mediator)

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

The ultraviolet light decontamination method effectively reduces bacterial and fungal contamination on surgical drains, minimizing the risk of infection and improving post-operative recovery outcomes without requiring redesign of existing drain systems.

Implementation Method 1

one or more ultraviolet light emitters disposed within the interior

Methodology Applied
Scientific EffectUltraviolet radiation: Radiation

Implementation Method 2

applying ultraviolet radiation to the surgical drain within the container

Methodology Applied
Scientific EffectPhoto-oxidation: Photo-oxidation

Data Source

PatentUS12005213B2Methods and systems for sterilizing surgical drains
Publication Date: 2024.06.11 DUKE UNIV
  • US12005213B2 patent drawing
  • US12005213B2 patent drawing
  • US12005213B2 patent drawing

AI summary

Systems and methods for decontaminating a surgical drain and its reservoir are provided. An apparatus is provided in the form of a container having an interior chamber and an expansible opening to the interior chamber for insertion of a surgical drain therethrough. Ultraviolet light emitters are disposed within the interior chamber to emit beams of ultraviolet radiation at the surgical drain and/or its reservoir, thereby killing or neutralizing bacteria and fungus on the drain. Walls forming the expansible opening are collapsible to abut a portion of the inserted drain when inserted into the apparatus, and a fluid tight seal is formed between the drain and the apparatus.