Multi-Suture Aperture Closure with Central Tension Lock

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Solution Overview

Problem

Existing suturing techniques for closing tissue apertures, such as wounds or trocar openings, often result in excessive tissue damage or suture breakage due to uneven tension distribution and require tedious manual adjustment.

Innovation Solution

A tissue aperture closure device featuring a suture lock and multiple sutures that can be locked and unlocked to evenly distribute tension across the tissue aperture perimeter, using a central suture lock to secure and maintain the sutures in a locked configuration.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional suturing techniques are used to close tissue apertures, then the aperture can be closed, but excessive tissue damage and suture breakage occur due to uneven tension distribution

Engineering Contradiction:

Improvetissue damage preventionVSAvoidtension distribution uniformity

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The suture system is divided into multiple individual sutures (typically 3-6 sutures) radiating from a central suture lock, allowing independent tension adjustment of each suture to achieve uniform distribution around the aperture perimeter

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The suture lock mechanism allows dynamic adjustment of suture lengths during the closing process, enabling the surgeon to incrementally tighten each suture and redistribute tension evenly as the aperture closes

Inventive Principle:

Principle #15Dynamics

2Productivity

If manual suture adjustment is performed frequently to maintain tension, then aperture closure can be achieved, but the procedure becomes tedious and time-consuming

Engineering Contradiction:

Improveclosure efficiencyVSAvoidmanual adjustment time

Core Design Contradiction:

ProductivityVSLoss of time

Solution Approach 1:

All sutures are pre-positioned through the tissue aperture and attached to the central suture lock before tightening begins, allowing multiple sutures to be tensioned simultaneously rather than one at a time

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

Multiple sutures are combined at a single central suture lock mechanism, allowing unified control and simultaneous adjustment of all sutures from one location, reducing the number of separate manipulation steps

Inventive Principle:

Principle #5Merging (Combining)

3Stability of the object's composition

If a secure lock mechanism is used to maintain suture length, then aperture closure stability is improved, but the device complexity increases

Engineering Contradiction:

Improvesuture length maintenanceVSAvoidsuture lock structure

Core Design Contradiction:

Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The suture lock mechanism is designed to be self-retaining, where the act of pulling sutures through the lock automatically engages the locking feature through friction or mechanical interference, eliminating the need for separate locking steps

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The suture lock acts as an intermediary component between the sutures and the surgeon's manipulation, providing a simple interface (such as a tapered hole or cam mechanism) that converts pulling motion into secure retention without complex additional parts

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS12527570B2Tissue aperture closure device

Publication Date: 2026.01.20 DAVOL INC

AI summary

A tissue aperture closure device may include more than one suture deployed in multiple directions around a perimeter of a tissue aperture. The sutures may be pulled through a suture lock to tension the sutures and close the tissue aperture. The suture lock may be transitioned between a locked configuration and an unlocked configuration in which the tension of the sutures may be adjusted.