Aortic Root Prosthesis with Pre-Formed Coronary Apertures

Solution Overview

Problem

Current aortic root prostheses complicate the surgical implantation process and increase the risk of post-operative complications due to difficulties in sewing coronary arteries onto the prosthesis, including distortion and seal failures.

Innovation Solution

A valved aortic root prosthesis with a cuff fastened to the proximal end and a valve mounted in the cuff, featuring three marks at 120-degree angles to define zones for the coronary sinuses and strategically positioned apertures for the coronary arteries, facilitating easier orientation and suturing during implantation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the surgeon manually selects and creates apertures in the vascular prosthesis wall, then the coronary arteries can be connected to the prosthesis, but the procedure becomes complex and prone to complications such as distortion of the coronary artery and seal failure

Engineering Contradiction:

Improveseal reliabilityVSAvoidimplantation procedure complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent applies preliminary action by pre-forming apertures in the vascular prosthesis at predetermined positions and dimensions during manufacturing. These apertures are prepared in advance with appropriate size and location to match anatomical requirements, eliminating the need for the surgeon to create them during surgery. This pre-preparation ensures proper sealing and connection while simplifying the implantation procedure.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent applies local quality by providing apertures with specific local characteristics - different positions and dimensions at different locations on the vascular prosthesis. The apertures are strategically placed and sized to match the specific anatomical requirements of coronary artery connections, ensuring optimal local sealing and flow characteristics rather than using a uniform design throughout.

Inventive Principle:

Principle #3Local quality

2Ease of manufacture

If the surgeon performs difficult manoeuvres to select aperture positions and sew coronary vessels, then the coronary arteries can be connected, but the risk of post-operative complications increases

Engineering Contradiction:

Improveease of implantationVSAvoidpost-operative complication risk

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The patent applies preliminary action by pre-forming apertures in the vascular prosthesis at predetermined positions and dimensions during manufacturing. These apertures are prepared in advance with appropriate size and location to match anatomical requirements, eliminating the need for the surgeon to create them during surgery. This pre-preparation ensures proper sealing and connection while simplifying the implantation procedure.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent applies the intermediary principle by using pre-formed apertures as intermediate structures that facilitate the connection between the vascular prosthesis and coronary arteries. These apertures serve as predetermined connection points that mediate the joining process, making it easier and more reliable than direct suturing techniques.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Adaptability or versatility

If the prosthesis requires manual aperture creation and orientation, then it can be adapted to different patients, but the implantation time and complexity increase

Engineering Contradiction:

Improveanatomical adaptabilityVSAvoidimplantation time

Core Design Contradiction:

Adaptability or versatilityVSLoss of time

Solution Approach 1:

The patent applies local quality by providing apertures with specific local characteristics - different positions and dimensions at different locations on the vascular prosthesis. The apertures are strategically placed and sized to match the specific anatomical requirements of coronary artery connections, ensuring optimal local sealing and flow characteristics rather than using a uniform design throughout.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent applies preliminary action by pre-forming apertures in the vascular prosthesis at predetermined positions and dimensions during manufacturing. These apertures are prepared in advance with appropriate size and location to match anatomical requirements, eliminating the need for the surgeon to create them during surgery. This pre-preparation ensures proper sealing and connection while simplifying the implantation procedure.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS9168128B2Valved aortic root prosthesis

Publication Date: 2015.10.27 ZAO NPP MEDENG

AI summary

Disclosed herein a valved aortic root prosthesis comprising a vascular prosthesis with a cuff fastened to the proximal end thereof and a valve mounted in the cuff, wherein the cuff is provided with three marks at an angle of 120 degrees from each other, which divide the cuff into three zones corresponding to the right coronary sinus, the left coronary sinus and the non-coronary sinus, while the vascular prosthesis is provided with two apertures situated above the zones corresponding to the right and left coronary sinuses, wherein the aperture in the left coronary sinus zone is provided at a level of 5-25 mm from the cuff, and the aperture in the right coronary sinus zone is provided at a level of 25-55 mm from the cuff, and each aperture has a vascular prosthesis sewn thereto for connection to the adjacent coronary artery.