Dual Needle Delivery System for Precise Agent Injection
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Solution Overview
Problem
Current methods for delivering treatment agents to blood vessels or other treatment sites face challenges such as inconsistent dosage delivery and thrombogenic effects due to the loss of sustained release matrices, which can lead to severe consequences like thrombosis, especially in cardiovascular treatments where retention of the matrix at the site is difficult.
Innovation Solution
A delivery apparatus with a catheter body having multiple lumens for separate needles or devices, allowing sequential or simultaneous delivery of agents to a treatment site, with control mechanisms to ensure only one device is extended at a time, minimizing trauma and ensuring precise delivery of agents that may form a gel matrix at the site.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a single needle is used for agent delivery, then the injection process is simple, but multiple punctures are required to deliver multiple agents which increases trauma and complexity
Solution Approach 1:
The patent combines multiple needles into a single integrated assembly where multiple needle shafts are positioned parallel to each other and move together as one unit. This allows multiple agents to be delivered through a single puncture event while maintaining the ability to inject different agents through separate lumens, thus reducing trauma from multiple punctures while preserving injection simplicity.
Solution Approach 2:
The delivery device is designed with multi-functionality to accommodate multiple needles with different lumens for delivering various agents. The single puncture mechanism serves universal purposes for delivering one or more agents simultaneously or sequentially, making the device adaptable for different therapeutic needs while minimizing patient trauma.
2Adaptability or versatility
If multiple needles are delivered simultaneously through separate paths, then each agent can be delivered independently, but the device complexity increases
Solution Approach 1:
The patent merges multiple needle shafts into a single integrated assembly that moves together through a single puncture. The needles share common structural elements and control mechanisms, reducing device complexity compared to separate delivery paths while maintaining the ability to deliver multiple agents independently through separate lumens within the unified structure.
Solution Approach 2:
The delivery apparatus is designed with universal control mechanisms that can manage multiple needles through a unified interface. The single puncture mechanism serves multiple functions for delivering different agents, reducing the need for separate complex delivery systems while preserving independent delivery capability.
3Quantity of substance
If sustained release matrix is injected through a needle, then the treatment agent can be delivered, but the matrix is lost due to backflow during needle removal
Solution Approach 1:
The patent introduces a seal element as an intermediary component at the needle tip that creates a seal between the needle lumen and the treatment site tissue. This seal prevents backflow of the sustained release matrix when the needle is withdrawn, ensuring that the treatment agent remains at the target site while allowing the needle to be removed for access to the next lumen.
Solution Approach 2:
The sealing mechanism is activated before needle withdrawal to counteract the backflow force. By creating a seal at the needle tip prior to removal, the system preliminarily prevents the harmful backflow action, ensuring complete delivery of the sustained release matrix without loss during the needle withdrawal process.
Data Source
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AI summary
An apparatus for delivering devices. The apparatus comprises a catheter with a elongated shaft having a first lumen and a second lumen extending therethrough. The apparatus further comprises a distal section with a lumen in communication with a port in a distal end of the catheter and with the first lumen and the second lumen. The first lumen is configured for a first device and the second lumen is configured for a second device to be disposed therein. The apparatus further comprises a proximal adapter coupled to the elongated shaft with a first port in communication with the first lumen and a second port in communication with the second lumen.