Open-Bores Hypodermic Needle Array for Uniform Intradermal Injection
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Solution Overview
Problem
Conventional hypodermic needle arrays are inadequate due to open barrels at the receiving end and closed tips, limited directional delivery of injection fluid, need for deeper needle penetration, and the inclusion of electrodes, which complicates the delivery of injections to precise tissue planes with minimal pressure and anxiety.
Innovation Solution
A hypodermic device with an array of hypodermic needles featuring a chamber and a threaded Luer lock connector, where needles are open at both ends and project perpendicular from the chamber, allowing for uniform, low-pressure injections into intradermal or subdermal tissues without the need for electrodes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional needle arrays use closed needle barrels with sidewall openings, then directional delivery of injection fluid is achieved, but the device complexity increases due to electrode integration and limited adaptability to different tissue planes
Solution Approach 1:
The patent inverts the conventional design by using open needle barrels instead of closed barrels with sidewall openings. This reversal allows the injection fluid to be delivered through the entire length of the needle, providing adaptability to different tissue planes without requiring complex electrode integration or directional opening orientations.
Solution Approach 2:
The patent extracts and removes the electrode component from the needle array design. By eliminating the electrode integration requirement, the device complexity is reduced while maintaining the core function of fluid delivery to various tissue planes through the open needle structure.
2Area of stationary object
If conventional needle arrays direct injection fluid towards the center of the array, then controlled delivery is achieved, but the area of effective injection is limited to the perimeter confines
Solution Approach 1:
The patent transitions from two-dimensional directional delivery (towards the center) to three-dimensional omnidirectional delivery. The open needle barrels allow injection fluid to be delivered in all directions radially outward from the needle array, expanding the effective injection area beyond the perimeter confines while maintaining ease of operation.
3Length of moving object
If conventional needle arrays use sidewall ports for substance delivery, then directional injection is achieved, but deeper tissue plane delivery requires greater needle penetration depth
Solution Approach 1:
The patent inverts the delivery mechanism by using open barrels that allow fluid delivery along the entire needle length rather than requiring deep penetration to reach sidewall ports. This reversal enables effective injection at shallower depths, reducing procedural pain and anxiety associated with deep needle insertion.
4Adaptability or versatility
If conventional needle arrays integrate electrodes for electrical current delivery, then additional therapeutic effect is achieved, but the ease of manufacture and device simplicity are reduced
Solution Approach 1:
The patent extracts and removes the electrode component from the design. By eliminating the electrode integration, the ease of manufacture is significantly improved while the core therapeutic function of fluid delivery to tissue planes is maintained through the simplified open needle structure.
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, reproducible, and uniform delivery of fluid or gel over a large surface area with reduced procedural pain and anxiety, eliminating the need for deep needle penetration and electrical current, thereby improving injection efficiency and patient comfort.
Implementation Method 1
Each of the hypodermic needles in the array of the hypodermic needles comprises a bore extending from a receiving end of the hypodermic needle to a delivery end of the hypodermic needle along a longitudinal axis. The bore at the receiving end of each of the hypodermic needles is in fluid communication with a hollow space in the chamber.
Data Source
AI summary
A hypodermic device is disclosed comprising a chamber, an array of hypodermic needles and a threaded Luer lock connector. The chamber comprises a distal outer surface and a proximal outer surface. The array of hypodermic needles projects outward from the distal outer surface of the chamber. Each hypodermic needle comprises a bore extending from a receiving end of the hypodermic needle to a delivery end of the hypodermic needle along a longitudinal axis. The bore in each of the hypodermic needles is in fluid communication with a hollow space in the chamber. The threaded Luer lock connector is in fluid communication with an opening at the proximal outer surface of the chamber. A first end of the threaded Luer lock connector is connected to the proximal outer surface of the chamber.