Endoscopic Suturing Device for Minimally Invasive Tissue Repair

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Solution Overview

Problem

Current methods for endoscopic repair of living tissues, such as suturing and resecting in the digestive tract, are invasive, costly, and time-consuming, with limitations in controlling stitch intervals and suturing wide ranges, particularly for gastroesophageal reflux disease treatment.

Innovation Solution

A suturing device that allows for reliable ligation and suturing of tissues using an endoscope, with a ligating member that can be punctured into tissues without external removal, enabling adjustable suction pressure for tissue resection and artificial valve formation, and flexible manipulation for precise control of puncture positions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If surgical operation is used for tissue repair and suturing, then reliable hemostasis and repair effect are achieved, but patient invasion is significant and hospitalization is required

Engineering Contradiction:

Improvehemostasis reliabilityVSAvoidpatient invasion

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent replaces traditional mechanical surgical suturing with an endoscopic ligation system that uses a ligating member delivered through an endoscope to ligate tissues internally, eliminating the need for external surgical incisions while maintaining hemostasis reliability

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The endoscope serves as an intermediary device that delivers the ligating member to the target tissue site through the digestive tract, enabling minimally invasive access to internal organs for ligation and suturing procedures

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If conventional endoscopic clipping is used for hemostasis, then bleeding is controlled, but the operation technique is complicated and treatment time is extended

Engineering Contradiction:

Improvehemostasis effectivenessVSAvoidtreatment time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent combines resection and suturing functions into a single integrated system, allowing the ligating member to perform both tissue resection and suturing in one continuous operation, thereby reducing treatment time and procedural complexity

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The ligating member is pre-formed with a loop structure that can be directly engaged with the tissue, eliminating the need for complex real-time manipulation and knot-tying procedures during the operation

Inventive Principle:

Principle #10Preliminary action

3Area of stationary object

If multiple clipping manipulations are performed for wide range suturing, then complete coverage is achieved, but the operation technique becomes very complicated

Engineering Contradiction:

Improvesuturing coverage areaVSAvoidoperation technique complexity

Core Design Contradiction:

Area of stationary objectVSDevice complexity

Solution Approach 1:

The ligating member is designed with flexible properties that allow it to dynamically adapt and conform to the tissue surface geometry, enabling single-step ligation of wide areas without requiring multiple rigid clipping operations

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The ligating member can be delivered in a compressed or folded state through the endoscope and then expanded at the target site, allowing sequential deployment along the tissue surface to cover wide areas systematically

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

This approach reduces invasive procedures, shortens treatment time, and allows for more precise and extensive suturing, reducing patient discomfort and hospitalization costs while enabling flexible adjustment of suturing parameters.

Implementation Method 1

the living tissues in the body cavity are suctioned into a chamber

Methodology Applied

Scientific EffectSuction: Suction

Implementation Method 2

there is provided means for puncturing a ligating member into the living tissues, followed by ligating the ligating member

Methodology Applied

Scientific EffectMechanical puncture: Mechanical Force

Implementation Method 3

a high frequency resecting device and a grasping forceps are used in combination with an endoscope

Methodology Applied

Scientific EffectHigh frequency resection: Electrical Discharge Machining

Data Source

PatentUS8465499B2Apparatus for ligating/suturing living tissues and system for resecting/suturing living tissues

Publication Date: 2013.06.18 BOSTON SCIENTIFIC SCIMED INC

AI summary

A medical apparatus including: a projecting member; an introducing sheath; an extrusion member inside the introducing sheath, at a proximal side of the projecting member and movable in an axial direction with respect to the introducing sheath; a cover sheath outside the introducing sheath, the introducing sheath being movable between a first and second position with respect to the cover sheath; an introducing sheath manipulating section at a proximal side of the introducing sheath; an extrusion member manipulating section at a proximal side of the extrusion member; a cover sheath manipulating section at a proximal side of the cover sheath; and a release member on the cover sheath manipulating section and/or the introducing sheath manipulating section to release a fixation between the extrusion member manipulating section and the introducing sheath manipulating section when the introducing sheath is disposed on the first or second position.