Endoscopic Delivery Device for Vascular Bypass Conduit

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Solution Overview

Problem

Conventional methods for vascular repair often require open surgery and are not suitable for vessels that are inaccessible due to specific vascular configurations or damage, leading to increased hospital stays and costs.

Innovation Solution

A bypass conduit delivery device comprising separately manipulable introducers and a bypass conduit that can be mounted in a U-shape, with a splittable sheath and haemostatic seals, allowing for endoscopic deployment of a tubular graft with self-expanding stents or balloon expandable stents to bypass occluded or damaged vessel segments.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If open surgical techniques are used for vascular repair, then reliable vascular bypass can be achieved, but hospital stay and surgical costs increase significantly

Engineering Contradiction:

Improvevascular bypass reliabilityVSAvoidhospital stay duration

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The bypass conduit is divided into multiple segments including a first portion, an intermediate portion with an aperture, and a second portion. This segmentation allows the conduit to be delivered through separate introducers and deployed in a U-shape configuration, enabling minimally invasive endoscopic delivery while maintaining the reliability of vascular bypass.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The delivery device employs a nested structure where the bypass conduit is mounted onto introducers that are themselves contained within a main sheath. The introducers can be separately manipulated while remaining nested within the delivery system, allowing controlled deployment through small incisions rather than open surgery.

Inventive Principle:

Principle #7Nested doll (Nesting)

2Reliability

If conventional sewn anastomoses are used, then secure vessel connection is achieved, but surgical complexity and operation time increase

Engineering Contradiction:

Improvevessel connection securityVSAvoidsurgical procedure complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The bypass conduit is pre-formed with an aperture in the intermediate portion and is mounted onto the introducers in a U-shape configuration before delivery. This preliminary preparation allows the conduit to be deployed as a complete U-shaped bypass without requiring complex in-situ anastomosis procedures, reducing surgical complexity while maintaining connection security.

Inventive Principle:

Principle #10Preliminary action

3Ease of operation

If endovascular techniques are used to deploy stent grafts, then minimally invasive repair is achieved, but vessels with specific configurations or occlusions become inaccessible

Engineering Contradiction:

Improveminimally invasive accessVSAvoidvascular configuration adaptability

Core Design Contradiction:

Ease of operationVSAdaptability or versatility

Solution Approach 1:

The delivery device allows for separate manipulation of the first and second introducers, providing dynamic control during deployment. The introducers can be independently positioned and manipulated to navigate complex vascular configurations and occlusions, enhancing adaptability while maintaining minimally invasive access.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The U-shaped bypass conduit with its aperture serves as an intermediary structure that can be delivered through the main sheath and then deployed to create a bypass around occluded or damaged vessel segments. This intermediate U-shaped configuration allows the device to navigate past obstacles that would block conventional endovascular approaches.

Inventive Principle:

Principle #24Intermediary (Mediator)

4Ease of operation

If separately manipulable introducers are used for bypass conduit delivery, then precise deployment control is achieved, but device complexity increases

Engineering Contradiction:

Improvedeployment control precisionVSAvoidintroducer system complexity

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The delivery system merges multiple functional components including the first and second introducers, the bypass conduit with U-shape configuration, and the main sheath into a coordinated system. The introducers are contained within the main sheath during delivery, and their separate manipulability is achieved through this unified structure, balancing deployment control with manageable device complexity.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS8747449B2Endoscopic delivery device

Publication Date: 2014.06.10 COOK MEDICAL TECHNOLOGIES LLC

AI summary

An endoscopic or laparoscopic conduit delivery device (1) comprises first and second separately manipulable introducers (3, 5) with a laparoscopic conduit (80) having first and second ends (83, 84) and an intermediate portion being mounted onto the introducers in a substantially U shape. The first end and a first portion of the laparoscopic conduit is retained onto the first introducer and the second end and a second portion of the laparoscopic conduit is retained on the second introducer and the intermediate portion extends between the first and second introducers. A main sheath (42) is over the first and second introducers. The endoscopic or laparoscopic conduit delivery device is introduced to a body cavity through an endoscopic or laparoscopic port (50).