Multi-Lumen Apical Cannula for Aortic Occlusion and Suction
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Solution Overview
Problem
Existing apical cannulation procedures require multiple cannulas and instruments for occluding the aorta, introducing cardioplegic solution, and applying suction to the left ventricle, which complicates the surgical process.
Innovation Solution
A single cannula design with multiple lumens for blood flow, inflation, cardioplegic solution introduction, and left ventricle suction, eliminating the need for additional instruments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple cannulas and instruments are used for apical cannulation to perform occlusion, cardioplegic solution introduction, and suction functions, then the necessary surgical functions are achieved, but the device complexity and procedural complexity increase
Solution Approach 1:
The patent combines multiple separate cannulas and instruments into a single integrated apical cannula device. The device merges the occlusion balloon, cardioplegic solution delivery system, and left ventricular suction system into one unified structure that can perform all necessary functions through its multiple lumens and attached components, thereby reducing procedural complexity while maintaining functional versatility
Solution Approach 2:
The apical cannula is designed as a universal device that performs multiple functions simultaneously. It includes an occlusion balloon for aortic occlusion, a cardioplegic solution delivery lumen for introducing protective solution, and a suction lumen for left ventricular decompression. This multi-functional design eliminates the need for multiple separate instruments while achieving all required surgical objectives
2Reliability
If multiple separate instruments are used for aortic occlusion, cardioplegic solution introduction, and left ventricle suction, then each function can be performed independently, but the quantity of instruments and procedural time increase
Solution Approach 1:
The patent merges multiple separate instruments into a single integrated cannula with distinct lumens for each function. The occlusion balloon, cardioplegic solution delivery, and suction capabilities are all incorporated into one device, reducing the quantity of instruments from multiple separate items to a single multi-lumen cannula while preserving functional independence through separate internal pathways
Solution Approach 2:
The single apical cannula serves as a universal instrument that replaces multiple specialized instruments. It universally performs aortic occlusion, cardioplegic solution introduction, and left ventricular suction through its integrated design, thereby reducing the total quantity of instruments required while maintaining the ability to perform each function independently through separate lumens
3Device complexity
If a single cannula with multiple lumens is used for apical cannulation, then the device complexity is reduced, but the manufacturing complexity and structural design difficulty increase
Solution Approach 1:
The patent applies segmentation by dividing the single cannula into distinct functional segments or modules. Each lumen and attached component (occlusion balloon, delivery ports, suction openings) is designed as a separate functional segment that can be manufactured independently and then assembled into the final integrated device, thereby simplifying the manufacturing process while achieving the desired procedural simplicity
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
Facilitates efficient and streamlined apical cannulation by integrating aortic occlusion, cardioplegic solution administration, and left ventricle decompression functions into a single device, reducing procedural complexity and enhancing surgical efficiency.
Implementation Method 1
The first secondary lumen is in fluid communication with a source of inflation media and with an inflatable body attached to the cannula proximate a distal end of the first elongated body and is configured to inflate the inflatable body, which is configured to engage an aortal wall proximate the aortic valve of the patient's heart to define a treatment space
Implementation Method 2
The third secondary lumen is configured to administer active decompression of the left ventricle of the patient's heart via suction
Data Source
AI summary
Cannulas for apical cannulation and methods of making and using the same are provided. The cannula includes a first elongated body defining a primary lumen, a second elongated body defining a first secondary lumen, a third elongated body defining a second secondary lumen, and a fourth elongated body defining a third secondary lumen. The primary lumen is configured to allow blood to flow therethrough. The first secondary lumen is configured to inflate an inflatable body, which is configured to engage an aortal wall proximate the aortic valve of the patient's heart to define a treatment space. The second secondary lumen is configured to selectively remove blood from the treatment space or introduce a cardioplegic solution into the treatment space. The third secondary lumen is configured to administer active decompression of the left ventricle of the patient's heart via suction.