Conduit-Guided Centered Arteriotomy for Reduced Vessel Damage

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Solution Overview

Problem

Existing methods for forming an arteriotomy during anastomosis procedures often result in vessel damage, dissection, and patient discomfort due to complete blood flow cessation, and can lead to poor device tracking and enlargement of the arteriotomy outside the anastomosis suture line.

Innovation Solution

An arteriotomy formation system comprising a center puncturing device and an arteriotomy formation device, which includes an elongated cylindrical body with a centering passageway and a puncturing element to create a centered puncture, and a tissue cutting element to form a centered arteriotomy relative to the conduit passageway, minimizing tissue damage and bleeding risk.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If the vessel is clamped distal and proximal to the intended access site to attach an anastomosis, then the anastomosis can be securely attached to the vessel, but complete blood flow cessation occurs causing vessel damage, vessel dissection, and patient discomfort

Engineering Contradiction:

Improveanastomosis attachment securityVSAvoidvessel damage and dissection from blood flow cessation

Core Design Contradiction:

StrengthVSObject-affected harmful factors

Solution Approach 1:

The arteriotomy is formed after the anastomosis is already attached to the vessel, rather than before. This preliminary attachment ensures that the vessel structure is stabilized and supported by the anastomosis before creating the arteriotomy, reducing the risk of vessel damage and dissection during the procedure.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The harmful effect of complete blood flow cessation is eliminated by removing the need to clamp the vessel for anastomosis attachment. The anastomosis is attached first without clamping, then the arteriotomy is formed through the attached conduit, allowing blood flow to be maintained or minimally interrupted.

Inventive Principle:

Principle #2Taking out (Extraction)

2Ease of manufacture

If an arteriotomy is created prior to attachment of an anastomosis, then the arteriotomy can be formed before anastomosis, but the arteriotomy may not be centered in the internal diameter of the anastomosis leading to poor device tracking and disruption of the anastomosis

Engineering Contradiction:

Improvearteriotomy formation timingVSAvoidarteriotomy centering accuracy

Core Design Contradiction:

Ease of manufactureVSManufacturing precision

Solution Approach 1:

The anastomosis is attached to the vessel before the arteriotomy is formed. This preliminary attachment serves as a reference structure that guides the subsequent arteriotomy formation, ensuring that the arteriotomy is created at the correct centered position relative to the anastomosis internal diameter.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The attached anastomosis/conduit acts as an intermediary reference structure between the vessel and the arteriotomy formation process. The arteriotomy formation device uses the conduit's geometry and position to automatically center the arteriotomy within the anastomosis, eliminating the need for complex manual alignment.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Productivity

If an arteriotomy is created prior to attachment of an anastomosis, then the arteriotomy can be formed early, but it can lead to enlargement of the arteriotomy outside of the anastomosis suture line

Engineering Contradiction:

Improveprocedure efficiencyVSAvoidarteriotomy boundary control

Core Design Contradiction:

ProductivityVSManufacturing precision

Solution Approach 1:

The anastomosis is attached and sutured to the vessel before the arteriotomy is formed. This creates a defined boundary (the suture line) that confines the subsequent arteriotomy formation process, preventing enlargement outside the intended area while maintaining procedural efficiency.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The attached conduit serves as a physical boundary and guide that limits the extent of arteriotomy formation to within the anastomosis suture line. The conduit's geometry acts as a constraint that prevents the arteriotomy from enlarging beyond the intended area.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS20250295428A1Methods and devices for creating centered arteriotomy through conduit

Publication Date: 2025.09.25 BOSTON SCIENTIFIC SCIMED INC

AI summary

Disclosed are various embodiments and related methods of an arteriotomy formation system that can include a center puncturing device and an arteriotomy formation device. The center puncturing device can include a puncturing element that forms a puncture along a wall of a first vessel at a position central to a conduit passageway of a conduit. The arteriotomy formation device can include a tissue fixation element, a tissue capturing element, and a tissue cutting element. The arteriotomy formation device can form an arteriotomy along the first vessel such that the arteriotomy is centered relative to the conduit passageway.