Multi-Outlet Needle for Even Botulinum Distribution
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Solution Overview
Problem
Current methods for injecting medicinal liquids, such as botulinum, into the skin layer often result in uneven distribution, leading to side effects like severe swelling or contraction, as the liquid is predominantly supplied to the lower skin layer, and there is a need for a method to evenly distribute the liquid around the tendon membrane.
Innovation Solution
A needle with outlets along its longitudinal direction, specifically designed to inject medicinal liquids evenly around the tendon membrane, featuring first and second sections with strategically placed holes to ensure even distribution, preventing excessive liquid from accumulating at the needle tip.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the needle tip is used to inject medicinal liquid directly into the skin layer, then the injection process is simple, but the medicinal liquid is excessively supplied to only a portion of the lower portion of the skin layer, leading to uneven distribution and side effects
Solution Approach 1:
The needle is divided into multiple sections along its longitudinal direction, with each section containing outlets positioned at different depths. This segmentation allows the medicinal liquid to be injected at multiple locations simultaneously, achieving even distribution throughout the skin layer without requiring complex injection techniques
Solution Approach 2:
The needle structure transitions from a single-point injection (zero-dimensional tip) to a distributed multi-point injection system (one-dimensional longitudinal distribution). By arranging outlets along the length of the needle, the injection process moves from concentrating liquid at one location to distributing it across multiple spatial positions, eliminating the accumulation problem at the lower skin layer
2Manufacturing precision
If the needle withdrawal velocity is adjusted to uniformly supply medicinal liquid to the skin layer, then the distribution becomes more even, but the operator needs to meticulously adjust the withdrawal velocity, increasing operational complexity
Solution Approach 1:
The needle structure itself provides the distribution function through its multi-section outlet design. Once inserted, the medicinal liquid automatically distributes evenly through the outlets at different depths without requiring the operator to control withdrawal velocity. The structure performs the distribution function autonomously, eliminating the need for meticulous speed adjustment
3Reliability
If botulinum is injected into the surrounding portions of the wrinkled skin layer to remove wrinkles, then cosmetic treatment effectiveness is improved, but excessive supply to the lower portion adjacent to the bone causes severe swelling and contraction side effects
Solution Approach 1:
Different sections of the needle provide different injection depths, with outlets positioned to target specific skin layers. The upper sections inject into the dermis for wrinkle treatment, while lower sections prevent accumulation near the bone. This localized quality control ensures effective treatment while avoiding harmful over-injection in sensitive areas
Data Source
AI summary
A needle and a syringe using the same according to the present disclosure include a needle provided in a device for injecting a medicinal liquid through a skin layer, and including outlets formed along the longitudinal direction of the needle between one end of the needle connected to an accommodating part of the device containing the medicinal liquid and the other end of the needle for penetrating the skin layer, so that the medicinal liquid is evenly injected into a skin tissue in the lower portion of the skin layer, wherein the outlets are formed in a first section between the other end and a location corresponding to a tendon membrane located inside the skin tissue in a state of penetrating the skin layer, and a second section between the location corresponding to the tendon membrane and the one end, respectively, so that the medicinal liquid is evenly injected around the tendon membrane, and a syringe using such needle is also provided.