Reciprocating Needle Tip with Sealing for Deep Drug Injection
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Solution Overview
Problem
Conventional skin treatment apparatuses lack an efficient mechanism for automatically applying drugs deep into the skin during procedures, often resulting in inadequate drug delivery or increased hand piece size due to separate applicators.
Innovation Solution
A needle tip mounted on a skin treatment apparatus with a cartridge form, featuring a casing, a reciprocating needle unit, and sealing members, which includes a drug application pad to ensure deep injection and prevent leakage, allowing for automatic drug delivery during treatment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a separate applicator is provided for drug application, then drug delivery function is added, but hand piece size increases
Solution Approach 1:
The patent combines the needle electrode and drug applicator into a single integrated needle tip assembly. The drug applicator is positioned around the needle electrode, allowing both RF energy delivery and drug application functions to be performed through one component rather than requiring separate applicators, thus avoiding increase in hand piece size.
Solution Approach 2:
The needle tip assembly serves multiple functions simultaneously: it delivers RF energy through the needle electrode for skin treatment and applies drug through the applicator for enhanced therapeutic effect. This multi-functional design eliminates the need for separate specialized applicators for each function.
2Adaptability or versatility
If a separate applicator is provided for drug application, then drug delivery function is added, but device complexity increases
Solution Approach 1:
By merging the needle electrode and drug applicator into a single integrated needle tip assembly, the patent reduces the number of separate components and connections required. This integration simplifies the overall device structure compared to using separate applicators that would require additional mounting mechanisms and control systems.
3Ease of operation
If drug is applied manually, then flexibility is maintained, but injection depth is insufficient
Solution Approach 1:
The applicator is designed to surround the needle electrode, creating a configuration that allows drug to be delivered both to the skin surface and deeper into the tissue along the needle path. This geometric arrangement ensures adequate injection depth while maintaining ease of operation during the treatment procedure.
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 deep and efficient drug injection into the skin, improving treatment efficacy while maintaining a compact hand piece design by utilizing a detachable cartridge with a sealing mechanism to ensure airtightness and positive pressure for drug delivery.
Implementation Method 1
a needle unit disposed in the casing and reciprocating in the vertical direction
Implementation Method 2
at least one sealing member disposed between the casing and the needle unit... the at least one sealing member closes a space between the casing and the housing of the needle unit
Data Source
AI summary
Disclosed are a needle tip mounted in a cartridge form (in a replaceable manner) to a hand piece of the skin treatment apparatus and allowing a drug to be injected deeply into an invaded potion, and a skin treatment apparatus having the needle tip mounted thereon. The needle tip includes a casing hollow in a vertical direction; a needle unit disposed in the casing and reciprocating in the vertical direction; and at least one sealing member disposed between the casing and the needle unit, wherein the needle unit includes: a housing disposed inside the casing; and at least one needle electrode disposed in the housing of the needle unit and extending in the vertical direction, wherein the at least one sealing member closes a space between the casing and the housing of the needle unit in the vertical direction.