Follicular Aspiration Needle Frustro-Conical Base Design
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Solution Overview
Problem
Current needles for follicular aspiration in veterinary medicine face challenges such as laborious and time-consuming assembly, high contamination risk, animal trauma, and environmental impact due to disposable long needles, as well as compatibility issues with different aspiration guide devices.
Innovation Solution
A follicular aspiration needle with a smaller diameter cannula and a frustro-conical segment for seal-tight coupling with the line, eliminating the need for intermediary parts and allowing direct connection, along with external threads for easy handling and adaptation to various elongated rods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional needle with large base diameter is used, then the needle can be easily handled, but the assembly process becomes laborious and time-consuming requiring intermediary parts and mandrills
Solution Approach 1:
The patent merges the needle base with the cannula by directly coupling the line to the base, eliminating the need for separate intermediary parts and mandrills. The base receives the cannula directly and the line is fastened to the base, creating an integrated assembly that simplifies the overall structure and reduces the number of components.
Solution Approach 2:
The base is designed with a universal coupling mechanism that can accommodate different cannula sizes and line diameters. The frustro-conical segment and opening configuration allow the same base structure to work with various needle configurations, eliminating the need for specialized intermediary parts for different assemblies.
2Device complexity
If conventional needles with large base diameter are used, then the needle structure is simple, but the assembly process increases contamination risk due to multiple components and steps
Solution Approach 1:
By combining the base and cannula into a directly coupled structure where the line fastens directly to the base, the patent reduces the number of assembly steps and intermediate components. This streamlined assembly process minimizes exposure to non-aseptic conditions and reduces the risk of contamination during the assembly procedure.
3Device complexity
If long needles are used to eliminate mandrill, then assembly is simpler, but the cost is higher and environmental impact increases due to disposability
Solution Approach 1:
The patent designs the needle base and cannula as reusable components where the cannula can be sterilized and reused, and the base can be disassembled and reassembled. This reduces the need for complete disposable needle assemblies, allowing recovery and reuse of critical components while maintaining assembly simplicity.
4Ease of operation
If force is applied to conventional needles during insertion, then the needle can be inserted effectively, but it causes trauma to the ovary and may rupture the follicle
Solution Approach 1:
The patent changes the geometric parameters of the needle, specifically using a smaller diameter cannula (1-3mm) compared to conventional needles. This parameter change allows for more precise insertion with reduced force requirements, minimizing trauma to the ovary and follicle while maintaining effective insertion capability.
5Device complexity
If long needles with smaller cannula are used, then mandrill is not needed, but adaptation to various aspiration guide devices becomes difficult and sealing is problematic
Solution Approach 1:
The base is designed with a universal frustro-conical segment that can accommodate different line diameters and cannula sizes. The opening configuration and sealing surface are designed to work with various aspiration guide device orifices, providing adaptability across different equipment configurations without requiring additional intermediary parts.
Solution Approach 2:
The patent uses a frustro-conical segment with specific geometric parameters (maximum angle of 15° in axial direction) that provides universal compatibility. This parameter optimization allows the same base structure to seal effectively with different guide device orifices and line diameters, enhancing versatility.
Data Source
AI summary
The invention refers to a needle for follicular aspiration, having a base with a through-hole, inside of which a needle cannula is coupled, the needle cannula having a front aspiration end which protrudes from a front end of the base, and a rear end which freely protrudes from the rear end of the base, the through-hole of the base having a frustro- conical segment tapering from the rear end towards the front end of the base, forming a gap between the inner surface of the base and the outer surface of the needle cannula for coupling a biological sample collecting line.