Hinged Injection Needle Cover for Compact Puncture Protection
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Solution Overview
Problem
Existing injection needle assemblies with accidental puncture prevention mechanisms are bulky and cumbersome, obstructing precision operations and resource-intensive, with separate sheath and protector components that complicate handling and increase environmental impact.
Innovation Solution
An injection needle cover system comprising a support member, a first member rotatably connected via a hinge, and a second member that forms a container with the first member, allowing states to accommodate and expose the needle tip through a simple one-handed operation using a protrusion and flip-up mechanism, reducing bulkiness and resource consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate sheath and protector mechanisms are used, then accidental puncture prevention function is achieved, but device bulkiness increases and operation becomes cumbersome
Solution Approach 1:
The patent merges the sheath and protector mechanisms into a single integrated cover assembly. The cover includes a main body that forms both the sheath portion and protector portion, eliminating the need for separate mechanisms. This integration reduces device bulkiness while maintaining the accidental puncture prevention function through the unified structure that combines both protective functions.
Solution Approach 2:
The cover assembly is designed as a multi-functional component that simultaneously serves as both sheath and protector. The single cover structure performs multiple functions: it covers the needle during injection, protects the needle tip after use, and eliminates the need for separate sheath and protector operations, thereby reducing complexity while maintaining safety.
2Reliability
If separate sheath and protector mechanisms are used, then accidental puncture prevention function is achieved, but ease of operation deteriorates
Solution Approach 1:
By combining the sheath and protector into a single cover assembly, the patent reduces the number of operations required. Instead of separately manipulating a sheath and a protector, the user only needs to handle the integrated cover, which simplifies the operation sequence and improves ease of use while maintaining the safety function.
Solution Approach 2:
The cover assembly incorporates a hinge mechanism that enables dynamic movement between different positions. The cover can rotate and move to transition between covering the needle during injection and exposing the needle tip after use, providing smooth, easy operation through controlled dynamic movement rather than separate rigid components.
3Reliability
If bulkier sheath structure is used, then accidental puncture prevention function is achieved, but field of view obstruction increases during precision injection operations
Solution Approach 1:
The integrated cover design reduces the overall bulkiness compared to separate sheath and protector mechanisms. By eliminating redundant components and combining functions into a single streamlined structure, the cover occupies less space during injection operations, thereby reducing field of view obstruction while maintaining the accidental puncture prevention function.
Solution Approach 2:
The hinge mechanism enables the cover to move in multiple dimensions, transitioning from a bulky position during injection to a retracted position during needle exposure. This multi-dimensional movement allows the cover to protect the needle without permanently obstructing the field of view, adapting its spatial occupation based on the operational phase.
Data Source
AI summary
An injection needle cover includes a support member supporting a needle body including a needle shaft, a first member rotatably connected to the support member via a hinge and covering a needle tip of the needle shaft, and a second member separably connected to the first member and constituting, with the first member, a container accommodating the needle shaft. The injection needle cover has: a first state in which the first member and the second member are connected to each other to accommodate the needle shaft in the container; a second state in which the second member is separated from the first member and the first member is rotated from its position in the first state to expose the needle tip; and a third state in which the first member is rotated from its position in the second state to cover the needle tip with the first member.