Sleeve Gastrectomy Aid Device with Expandable Pressure Sensors
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Solution Overview
Problem
Conventional surgical tools for sleeve gastrectomy lack a means to quantitatively provide necessary information during resection, leading to variations in the form of the remaining stomach and potential complications such as gastroesophageal reflux or inadequate weight loss.
Innovation Solution
A sleeve gastrectomy aid device featuring a guide with expanders that can change volume, a sealer to maintain the expanders, an injector to control air flow, and a measurer to monitor pressure, providing quantitative information on the resection state and allowing for consistent formation of the remaining stomach.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional surgical tools are used for sleeve gastrectomy, then the surgery can be performed with simple tools, but the resection process lacks quantitative information and depends on operator skill
Solution Approach 1:
The guide structure contains multiple expanders nested within it, with each expander having a measurer inside. The sealer encloses the expanders, creating a nested configuration that provides quantitative measurement functionality within the existing guide framework without requiring completely separate measurement devices.
Solution Approach 2:
The patent replaces subjective operator judgment with objective pressure-based measurement. Pressure sensors (measurers) detect physical pressure changes caused by expander compression, converting mechanical deformation into quantitative electrical signals that provide objective resection information independent of operator skill.
2Reliability
If the volume of the remaining stomach is not controlled, then the surgery is simpler, but complications such as gastroesophageal reflux or inadequate weight loss occur
Solution Approach 1:
The measurers provide real-time pressure feedback about expander compression during resection. This feedback allows the operator to monitor and control the force applied, ensuring that the remaining stomach achieves the desired volume (100-150 ml) without excessive compression that could cause reflux or insufficient compression that would result in inadequate weight loss.
Solution Approach 2:
The patent controls the physical parameter of pressure to regulate expander volume, which directly controls the remaining stomach volume. By adjusting and monitoring pressure levels, the system ensures the remaining stomach maintains the optimal volume range for preventing complications while achieving weight loss goals.
3Manufacturing precision
If multiple expanders are used to control different sections, then volume control is improved, but the device structure becomes more complex
Solution Approach 1:
The guide is divided into multiple sections, each with its own expander and measurer. This segmentation allows independent control and measurement of different stomach regions, ensuring uniform compression and consistent remaining stomach form throughout the resection process, rather than treating the stomach as a single undifferentiated mass.
Solution Approach 2:
Each expander-sealer-measurer combination serves multiple functions: the expander provides structural support and defines the remaining stomach boundary, the sealer isolates and seals the expander within the guide, and the measurer monitors compression levels. This multi-functional design reduces the need for separate dedicated components for each function.
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 control over the volume of the remaining stomach, reducing the risk of complications and ensuring consistent surgical outcomes regardless of the operator's skill, while also providing intuitive resection position information.
Implementation Method 1
a measurer configured to be disposed inside the expander and measure a pressure value of the expander
Implementation Method 2
an injector configured to be connected to the sealer and inject air into the expander
Implementation Method 3
a sealer configured to be installed at the guide and seal the plurality of expanders with each other
Data Source
AI summary
The present disclosure relates to a sleeve gastrectomy aid device including a guide configured to be inserted into a stomach of a patient; a plurality of expanders configured to be disposed in a longitudinal direction of the guide and have a volume that changes according to an amount of air therein; a sealer configured to be installed at the guide and seal the plurality of expanders with each other, an injector configured to be connected to the sealer and inject air into the expander, and a measurer configured to be disposed inside the expander and measure a pressure value of the expander.