Endoscopic Suture Shuttle Locking for Large Tissue Defect Closure

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Solution Overview

Problem

Existing endoscopic treatments often result in large tissue defects that are difficult to close effectively using known closure methods, which have various advantages and disadvantages.

Innovation Solution

A suture device designed for use with an endoscope, featuring a needle with a distal end and a distal detent, a needle cap, a distal shuttle, and a sleeve that can be locked or unlocked to secure the needle, allowing for precise suture placement and closure of large defects.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If known closure methods are used for large tissue defects, then the procedure can be completed with existing devices, but the closure effectiveness is insufficient for large defects

Engineering Contradiction:

Improveclosure effectivenessVSAvoidapplicability to large defects

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The needle is nested within the needle cap for protection during delivery, and the entire suture device is delivered through the endoscope working channel. This nesting approach enables the suture device to be transported and deployed through constrained access paths while maintaining functionality for large defect closure

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The needle cap acts as an intermediary protective element that shields the needle during delivery and can be selectively removed or repositioned. This intermediary structure enables controlled deployment of the needle while protecting it from damage during endoscopic delivery through the working channel

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If a protective needle cap is used during delivery, then the needle is protected from damage, but the needle cannot be deployed for suturing

Engineering Contradiction:

Improveneedle protectionVSAvoidneedle deployment

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The needle cap is designed to be dynamically repositionable rather than permanently fixed. It can be moved from a protective position covering the needle to a deployed position that allows needle function. This dynamic repositioning enables both protection during delivery and deployment for suturing through the endoscope

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The needle cap is pre-positioned to protect the needle during delivery through the endoscope working channel. This preliminary protective action is performed before the suturing operation, and the cap can then be repositioned or removed to enable needle deployment when needed

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS20260013852A1Suture based closure device for use with endoscope

Publication Date: 2026.01.15 BOSTON SCIENTIFIC SCIMED INC

AI summary

A suture device for use in combination with a delivery system including a lumen extending through the delivery system includes a needle usable to carry a suture, a distal shuttle configured to releasably secure the needle, a sleeve disposable over the distal shuttle, the distal shuttle movable relative to the sleeve between a locked position in which the needle is locked to the distal shuttle and an unlocked position in which the needle is releasable from the distal shuttle. A shaft is operably coupled to the sleeve and a control wire is operably coupled to the distal shuttle. A needle may include a needle cap.