Vacuum Shell for Robotic Soft Tissue Manipulation

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Solution Overview

Problem

Surgeons face difficulties in manipulating and holding soft tissues, such as breast tissue, during robotic surgery procedures, which hinders the precision and minimization of scarring in breast enhancement and other soft tissue surgeries.

Innovation Solution

A vacuum shell device with a flexible rim and instrument ports is designed to create a sealed space around the surgical area, using negative pressure to expand and hold soft tissue in place, allowing for easier access and reduced manual manipulation, and can be adapted for localized pressure application.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Extent of automation

If robotic devices are used to execute breast enhancement procedures, then automation of surgical manipulation is improved, but the surgeon's ability to manually maintain and position soft tissues deteriorates

Engineering Contradiction:
Improveautomation of soft tissue manipulationVSAvoidsurgeon's ability to manually maintain soft tissues
Core Design Contradiction:
Extent of automationVSEase of operation

Solution Approach 1:

The vacuum shell acts as an intermediary device between the robotic system and the soft tissue. It provides a controlled environment that facilitates robotic manipulation while simultaneously maintaining tissue position through negative pressure, thus bridging the gap between automated and manual control approaches

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The device utilizes pneumatic pressure (negative pressure/vacuum) to hold and position soft tissues within the shell. This pneumatic mechanism enables automated tissue maintenance without requiring continuous manual intervention, resolving the contradiction between automation and ease of operation

Inventive Principle:
Principle #29Pneumatics and hydraulics

2Ease of operation

If manual manipulation of soft tissues is performed to expose skin for incision, then access for surgical instruments is improved, but scarring and postsurgical complications increase

Engineering Contradiction:
Improveaccess for surgical instrumentsVSAvoidscarring and postsurgical complications
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

Negative pressure within the shell expands the soft tissue and maintains it in a controlled position, providing stable access for instruments while minimizing unnecessary manipulation and reducing the risk of scarring and complications

Inventive Principle:
Principle #29Pneumatics and hydraulics

Solution Approach 2:

The device changes the physical state of the soft tissue environment by applying negative pressure, which transforms the tissue from a floppy state to an expanded, stabilized state that is easier to work with and less prone to damage

Inventive Principle:
Principle #35Parameter changes

3Ease of operation

If a vacuum shell is applied to expand and hold soft tissue, then access for incision and manipulation is improved, but device complexity increases

Engineering Contradiction:
Improveaccess for incision and manipulationVSAvoidcomplexity of vacuum shell system
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The shell itself is designed as a flexible structure that can conform to the body surface while maintaining the vacuum seal. This flexibility simplifies the overall system compared to rigid alternatives and allows for easier application and removal

Inventive Principle:
Principle #30Flexible shells and thin films

Solution Approach 2:

The vacuum shell system is divided into modular components including the shell itself, the vacuum pump, and the sealing mechanism. This segmentation allows each component to be optimized independently and simplifies assembly and operation

Inventive Principle:
Principle #1Segmentation

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 device enables precise exposure of the skin and minimizes scarring by maintaining soft tissue expansion and stability during surgery, facilitating more accurate and less invasive procedures.

Implementation Method 1

a vacuum port that allows negative pressure to be applied to the space

Methodology Applied
Scientific EffectNegative pressure: Vacuum

Implementation Method 2

The shell has a soft, flexible rim disposed around the peripheral edges of the shell for sealing to the skin of a patient

Methodology Applied
Scientific EffectSealing: Adhesive

Data Source

PatentUS9237932B2Vacuum shell for robotic surgery of soft tissue
Publication Date: 2016.01.19 GHADERI BAHRAM
  • US9237932B2 patent drawing
  • US9237932B2 patent drawing
  • US9237932B2 patent drawing

AI summary

A device for assisting robotic surgery of soft tissue, that comprises a shell with a flexible sealing rim, instrument ports, and a vacuum port. The flexible sealing rim seals the shell around a surgical area and allows for the application of negative pressure via the vacuum port. The negative pressure manipulates soft tissue to allow a surgeon to perform an incision with a robotic surgery apparatus.