Angled Anoscope Ligation Device for Hemorrhoid Treatment

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Solution Overview

Problem

Current rubber band ligation techniques for treating hemorrhoids require advanced manual skills, an assistant, and struggle with accurate placement and stabilization of instruments, leading to potential complications and the need for improved tissue manipulation and visibility.

Innovation Solution

A system comprising an anoscope with angled channels and a ligating device that allows for stable instrument positioning, minimizes obstruction, and enables single-handed operation by incorporating a plunger for suction and elastic band advancement, with features like stops and markers for precise placement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If traditional rubber band ligation technique is used, then treatment effectiveness is achieved, but advanced manual skills and assistant coordination are required

Engineering Contradiction:
Improveease of operationVSAvoiddevice complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The patent combines multiple functions (tissue suction, elastic band advancement, and stabilization) into a single integrated ligating device. The device merges the plunger mechanism for suction with the elastic band delivery system, eliminating the need for separate instruments and assistant coordination while maintaining treatment effectiveness

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The ligating device is designed with multi-functionality, serving as both a suction device and an elastic band applicator. The single device performs multiple operations that traditionally required separate instruments and coordinated assistance, making the procedure accessible to clinicians without advanced manual skills

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

2Measurement precision

If traditional ligation device is used, then elastic band can be applied, but instrument stabilization and accurate placement are difficult

Engineering Contradiction:
Improveplacement precisionVSAvoidease of operation
Core Design Contradiction:
Measurement precisionVSEase of operation

Solution Approach 1:

The anoscope serves as an intermediary device that stabilizes the ligating device during the procedure. The angled channel of the anoscope acts as a guide and stabilizer, ensuring accurate placement of the elastic band while reducing the skill level required for precise positioning

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent replaces complex manual manipulation mechanisms with a simplified plunger-based system. The plunger mechanism automatically advances the elastic band when activated, substituting for the complex coordinated hand movements previously required and enabling precise placement through mechanical action rather than manual skill

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

3Adaptability or versatility

If traditional suction equipment is used, then tissue can be suctioned, but control over suction amount is insufficient

Engineering Contradiction:
ImproveadaptabilityVSAvoidease of operation
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

The plunger mechanism provides dynamic control over suction amount. By allowing incremental movement of the plunger, the operator can adjust the degree of tissue suction in real-time, adapting to different tissue types and procedural needs while maintaining ease of operation through simple mechanical control

Inventive Principle:
Principle #15Dynamics

4Illumination intensity

If instruments are inserted through anoscope channel, then treatment can be performed, but visibility of target area is obscured

Engineering Contradiction:
ImprovevisibilityVSAvoidprocedural efficiency
Core Design Contradiction:
Illumination intensityVSProductivity

Solution Approach 1:

The anoscope is designed with an asymmetric angled channel rather than a straight central channel. This asymmetric geometry positions the ligating device at an angle that clears the line of sight through the anoscope, improving visibility of the target area while still enabling effective treatment delivery

Inventive Principle:
Principle #4Asymmetry

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

Simplifies the procedure, reduces the need for assistants, improves tissue manipulation, and enhances visibility, thereby reducing complications and making the treatment more accessible and effective for a wider range of clinicians.

Implementation Method 1

a plunger movable in a proximal direction within a tube of the device to effect suctioning of target tissue

Methodology Applied
Scientific EffectSuction: Suction

Data Source

PatentUS11944311B2Rubber band ligation system for treatment of hemorrhoids
Publication Date: 2024.04.02 PISKUN GREGORY
  • US11944311B2 patent drawing
  • US11944311B2 patent drawing
  • US11944311B2 patent drawing

AI summary

A system including an anoscope having a first channel extending along a longitudinal axis and a second channel positioned at an angle to the first channel. For hemorrhoid treatment, an elastic band ligation device is insertable into the second channel, the elastic band ligation device carrying an elastic band and having an advancer movable in a distal direction to dislodge the elastic band.