Conductive Hollow Needle With Insulating Film for Position Recognition
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing medical needles require separate procedures for drug injection and blood extraction, leading to increased damage to the living body and lack of external position recognition.
Innovation Solution
A hollow needle with a conductive needle body and an insulating film that exposes the opening and part of the tip, allowing electrical connection and external position detection through conductivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a dedicated tool is used to obtain information inside the living body, then measurement precision is improved, but device complexity increases and multiple separate procedures are required
Solution Approach 1:
The patent combines multiple functions (information measurement, drug injection, and body fluid extraction) into a single hollow needle device. The needle body includes both an opening for injecting/discharging liquids and another opening for drawing in body fluids, allowing multiple procedures to be performed simultaneously or sequentially with one device, thereby reducing procedure complexity while maintaining measurement precision through the electrode window.
Solution Approach 2:
The hollow needle is designed as a multi-functional device that can perform information measurement via the electrode, inject drug solutions through the opening, and extract body fluids through another opening. This universal design eliminates the need for separate dedicated tools for each function, reducing the number of procedures required while maintaining the precision of glucose measurement through the exposed electrode window.
2Adaptability or versatility
If multiple separate procedures are performed for injection and extraction, then functional versatility is improved, but object-affected harmful factors increase
Solution Approach 1:
By merging injection and extraction functions into a single needle device with multiple openings, the patent reduces the number of punctures required. The first opening allows drug solution injection while the second opening enables body fluid extraction, both through the same puncture site, thereby maintaining functional versatility while reducing cumulative damage to the living body tissue.
3Ease of manufacture
If the opening position is not externally recognizable, then manufacturing simplicity is maintained, but measurement precision and operational control deteriorate
Solution Approach 1:
The patent employs visual differentiation (analogous to color changes) by making the outer circumferential surface of the tip part have a different appearance or property than the shaft part. This allows the opening position and tip location to be externally recognizable without complicating the manufacturing process, as the differentiation can be achieved through simple surface treatment or material selection during the existing manufacturing workflow.
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 simultaneous drug injection and blood extraction with precise external tip and opening position recognition, reducing bodily damage and improving procedural efficiency.
Implementation Method 1
a needle body made of an electrically conductive material... an annular insulating film made of an electrically insulative material, which exposes the opening and at least part of the tip part
Data Source
AI summary
A hollow needle includes a needle body made of an electrically conductive material, forming a cylindrical shape, and including a shaft part, a tip part connected with the shaft part, and an opening for discharging or drawing in a liquid in which a cavity communicating between the shaft part and the opening is formed. Also included is an annular insulating film made of an electrically insulative material, which exposes the opening and at least part of the tip part, and coats at least part of an outer circumferential surface of the shaft part.