Surgical Smoke Evacuation With Sensor-Based Pump Speed Control

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Solution Overview

Problem

Surgical smoke evacuators struggle to effectively manage smoke and particulate evacuation during surgical procedures, leading to potential health risks for medical professionals and interference with the surgical site visibility.

Innovation Solution

A method utilizing a processor-controlled evacuation system that monitors parameters of the surgical site, adjusts pump speed, and communicates system parameters to a surgical hub to optimize smoke evacuation, incorporating sensors and filters to improve airflow and filtration efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If pump speed is increased to improve smoke evacuation efficiency, then smoke removal effectiveness is improved, but energy consumption increases

Engineering Contradiction:
Improvesmoke evacuation efficiencyVSAvoidenergy consumption
Core Design Contradiction:
ProductivityVSUse of energy by moving object

Solution Approach 1:

The pump speed is made dynamically adjustable based on real-time smoke detection. The system transitions from a static fixed-speed pump to a dynamic variable-speed pump that adjusts its operation according to smoke particulate levels detected by sensors, allowing optimal performance without constant high energy consumption

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system changes the operational parameters of the pump based on smoke conditions. When smoke levels are low, the pump operates at lower speeds; when smoke levels increase, the pump speed increases accordingly. This parameter adjustment resolves the contradiction by matching energy consumption to actual evacuation needs

Inventive Principle:
Principle #35Parameter changes

2Productivity

If pump speed is increased to improve smoke evacuation, then smoke removal effectiveness is improved, but surgical site visibility may be compromised due to increased airflow disturbance

Engineering Contradiction:
Improvesmoke evacuation efficiencyVSAvoidsurgical site visibility
Core Design Contradiction:
ProductivityVSIllumination intensity

Solution Approach 1:

The system uses smoke sensors to provide feedback on smoke particulate levels, which then feeds back to adjust pump speed. This closed-loop control ensures the pump operates at the minimum necessary speed to maintain visibility while still effectively evacuating smoke, resolving the contradiction between evacuation efficiency and visibility

Inventive Principle:
Principle #23Feedback

3Object-affected harmful factors

If smoke evacuation is intensified to reduce health risks, then smoke removal effectiveness is improved, but interference with surgical site visibility increases

Engineering Contradiction:
Improvehealth risks from smokeVSAvoidsurgical site visibility
Core Design Contradiction:
Object-affected harmful factorsVSIllumination intensity

Solution Approach 1:

The system replaces purely mechanical high-speed evacuation with a sensor-based intelligent control system that uses optical sensors to detect smoke levels and adjusts pump operation accordingly. This substitution allows for precise control that protects health while preserving visibility

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

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

Enhances the efficiency and effectiveness of smoke evacuation, reducing health risks and maintaining clear surgical site visibility by dynamically adjusting to the surgical conditions.

Implementation Method 1

sensors and filters to improve airflow and filtration efficiency

Methodology Applied
Scientific EffectLight scattering: Scattering

Implementation Method 2

sensors and filters to improve airflow and filtration efficiency

Methodology Applied
Scientific EffectPhysical filtration: Filter (physical)

Data Source

PatentUS12053159B2Method of sensing particulate from smoke evacuated from a patient, adjusting the pump speed based on the sensed information, and communicating the functional parameters of the system to the hub
Publication Date: 2024.08.06 CILAG GMBH INTERNATIONAL
  • US12053159B2 patent drawing
  • US12053159B2 patent drawing
  • US12053159B2 patent drawing

AI summary

Surgical systems are disclosed. Surgical systems can include evacuation systems for evacuating smoke, fluid, and/or particulates from a surgical site. A surgical evacuation system can be intelligent and may include one or more sensors for detecting one or more properties of the surgical system, evacuation system, surgical procedure, surgical site, and/or patient tissue, for example.