Arcuate Suture Device for Large Tissue Defect Closure

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing endoscopic suturing devices struggle to effectively close large tissue defects that are beyond the reach of conventional hemostasis clips.

Innovation Solution

A suture device designed for use with an endoscope, featuring a mounting structure and a suture ring with arcuate channels, includes two arcuate needle passers and control elements that allow for the passage and securement of an arcuate needle between them, facilitating suturing of tissue defects.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If conventional hemostasis clips are used, then small defects can be closed, but large tissue defects cannot be effectively closed

Engineering Contradiction:

Improveability to close large tissue defectsVSAvoidclosure effectiveness

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The suture device divides the closure function into multiple components: a suture ring with arcuate channels, needle passers for thread insertion, and control elements for manipulation. This segmentation allows the system to address large defects by providing multiple suture points around the defect perimeter, enabling effective closure of large tissue defects that single-clip devices cannot handle

Inventive Principle:

Principle #1Segmentation

2Ease of operation

If a suture device with multiple control elements is designed, then suturing capability is improved, but device complexity increases

Engineering Contradiction:

Improvesuturing capabilityVSAvoidnumber of control elements

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The arcuate needle passers are designed to perform multiple functions: they can be inserted through the arcuate channels, manipulated by control elements, and used to pass sutures through tissue. The same structural components serve both as guides and as manipulation tools, reducing the need for separate specialized components and simplifying the overall device architecture while maintaining ease of operation

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Adaptability or versatility

If an arcuate needle passer design is used, then suture passage through large defects is improved, but manufacturing precision requirements increase

Engineering Contradiction:

Improvesuture passage capabilityVSAvoidarcuate channel alignment

Core Design Contradiction:

Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The device employs arcuate channels and arcuate needle passers with curved geometries that naturally guide the suture in an arc-shaped path. This curvature design allows the needle passer to navigate through the suture ring and pass sutures through large tissue defects more effectively. The standardized arcuate shapes can be manufactured with consistent tolerances, making the curvature itself a solution to the alignment precision challenge rather than a source of it

Inventive Principle:

Principle #14Spheroidality (Curvature)

Data Source

PatentEP4125626B1Suture based closure device

Publication Date: 2025.05.21 BOSTON SCIENTIFIC SCIMED INC

Figure 1
Figure 2
Figure 3

AI summary

A suture device includes a suture ring that defines an arcuate channel extending therein. A first arcuate needle passer is slidingly disposed within a first side of the arcuate channel and a second arcuate needle passer is slidingly disposed within a second side of the arcuate channel. An arcuate needle is passable between the first arcuate needle passer and the second arcuate needle passer and includes a first latching feature adapted to releasably secure the arcuate needle to the first arcuate needle passer and a second latching feature adapted to releasably secure the arcuate needle to the second arcuate needle passer.