Viscous Fluid Delivery Device with Segmented Push Rod Actuator
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Solution Overview
Problem
Existing delivery devices for high viscosity fluids, such as surgical adhesives, face challenges in efficiently and reliably dispensing viscous fluids onto targeted tissue sites without additional equipment, pumps, or electromechanical devices, often requiring complex mixing processes and multiple components.
Innovation Solution
A delivery device with an integrated system that uses a push rod and actuator mechanism to dispense viscous fluid from a cartridge, allowing for controlled and uniform application of adhesive drops without the need for additional equipment, featuring a reusable handle and disposable tips, and enabling single-button operation for easy use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a delivery device is designed to dispense high viscosity fluid without additional equipment, pumps, or electromechanical devices, then device complexity is reduced and ease of operation is improved, but the ability to reliably dispense controlled volumes of viscous fluid deteriorates
Solution Approach 1:
The delivery device is segmented into distinct functional components: a handle assembly with actuator for user operation, a push rod mechanism for applying pressure, a cartridge housing for containing the viscous fluid, and a tip assembly for dispensing. This segmentation allows each component to be optimized for its specific function while maintaining overall simplicity and achieving precise dispensing control through coordinated action of these modular elements.
2Object-affected harmful factors
If a single-use disposable configuration is used, then contamination risks are reduced and ease of operation is improved, but loss of substance increases due to disposal of the entire device
Solution Approach 1:
The delivery device is divided into disposable components (tip assembly, cartridge, and associated sealing elements) and reusable components (handle assembly). This segmentation enables the disposable portion to be discarded after a single use to eliminate contamination risks, while the reusable handle assembly can be sterilized and reused across multiple procedures, thereby reducing overall substance loss compared to discarding the entire device.
Solution Approach 2:
The tip assembly and cartridge are designed as disposable components that are discarded after a single use to eliminate contamination risks. These inexpensive, single-use elements can be easily replaced without requiring sterilization or maintenance of the entire delivery device, making this approach economically viable and clinically safe.
3Adaptability or versatility
If multiple components and mixing processes are required, then adaptability is improved for handling viscous fluids, but device complexity increases and ease of operation deteriorates
Solution Approach 1:
The delivery device is designed with universal components that can handle various viscous fluids through a single integrated mechanism. The handle assembly with actuator, push rod, and tip configuration work together to dispense different types of viscous materials (adhesives, sealants, etc.) without requiring separate mixing devices or complex fluid handling systems, thereby achieving multi-functionality with minimal complexity.
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
Enables precise and controlled dispensing of viscous fluids, reducing contamination risks and operational complexity, while allowing for single-use disposable configurations to minimize handling and inventory burdens in surgical settings.
Implementation Method 1
a push rod configured to advance into the cartridge when the cartridge is positioned within the cartridge housing
Implementation Method 2
an internal mechanism that can amplify the forces deployed by a user's finger or hand
Data Source
AI summary
This document relates to delivery devices for dispensing fluid materials, including high viscosity fluids such as high viscosity surgical adhesives. For example, methods and materials for an integrated system of containing and permitting point of use delivery of a high viscosity adhesive fluid onto a planar surface of tissue during a surgical procedure are provided.