Vascular Closure Device with Integrated Suture Cutting Port

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Solution Overview

Problem

Existing vascular closure devices require manual cutting of sutures outside the patient, which can lead to complications and adds complexity to the procedure, as the suture ends protrude through the skin, potentially causing infections and requiring additional time and instruments.

Innovation Solution

A tissue puncture closure device with a compaction member and a suture cutting member integrated within the device, allowing for suture cutting at a location distal to the aperture, facilitating cutting of the suture within the percutaneous incision below the patient's skin surface, using a lancet, needle, heat cutting member, or rotational cutting member.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If manual cutting of suture outside the patient is used, then the suture can be cut after sealing plug deployment, but it requires additional instruments and increases infection risk from protruding suture ends

Engineering Contradiction:

Improveinfection riskVSAvoidprocedure complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The suture cutting member is integrated into the compaction member, combining the cutting function with the existing compaction device. This eliminates the need for separate external cutting instruments and keeps the suture cutting operation within the percutaneous incision, thereby reducing infection risk while maintaining procedural simplicity

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The compaction member serves as an intermediary device that performs both compaction of the sealing plug and cutting of the suture. By using this existing structure as a mediator, the patent avoids introducing additional external instruments, thus reducing complexity while improving safety

Inventive Principle:

Principle #24Intermediary (Mediator)

2Productivity

If suture is cut outside the patient, then the cutting operation can be performed, but it requires additional time and external instruments

Engineering Contradiction:

Improveprocedure efficiencyVSAvoidcutting time

Core Design Contradiction:

ProductivityVSLoss of time

Solution Approach 1:

The suture cutting member is pre-positioned within the compaction member before the procedure begins. This preliminary arrangement allows the cutting operation to be performed immediately after suture deployment without requiring external instruments or additional setup time, thereby improving procedure efficiency

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

By merging the cutting function into the compaction member, the patent eliminates the need for separate cutting steps and external instruments. The integrated design allows both compaction and cutting to be performed in sequence within the incision, reducing overall procedure time and improving productivity

Inventive Principle:

Principle #5Merging (Combining)

3Reliability

If suture cutting member is integrated within the compaction member, then cutting can be performed within the incision, but the compaction member structure becomes more complex

Engineering Contradiction:

ImprovesafetyVSAvoidcompaction member structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The compaction member is designed to perform multiple functions: compaction of the sealing plug and cutting of the suture. By making the compaction member universal and multi-functional, the patent adds the cutting capability without requiring a completely separate device, thus improving safety while limiting the increase in structural complexity to what is necessary for multi-functionality

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The compaction member is designed to perform its own cutting function through the integrated suture cutting member, eliminating the need for external assistance or additional instruments. This self-service capability improves safety by containing the cutting operation within the incision while keeping the overall system design relatively simple

Inventive Principle:

Principle #25Self-service

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 solution simplifies the procedure by eliminating the need for external cutting instruments, reducing complications from protruding suture ends and streamlining the closure process by enabling suture cutting within the incision, thus enhancing safety and efficiency.

Implementation Method 1

The suture cutting member extends through the aperture and is operable to cut the suture within the compaction member

Methodology Applied

Scientific EffectMechanical cutting: Friction

Data Source

PatentUS8974476B2Vascular closure device with compaction tube suture cutting port and methods

Publication Date: 2015.03.10 TERUMO PUERTO RICO L L C

AI summary

A tissue puncture closure device includes an anchor, a sealing plug, a compaction member, a suture, and a suture cutting member. The compaction member is configured to compress the sealing plug toward the anchor. The suture is coupled to the sealing plug and anchor, and a portion of the suture extends through at least a portion of the compaction member. The suture cutting member extends through an aperture in a sidewall of the compaction member and is operable to cut the suture at a location within the compaction member.