Flexible Multi-Cap Connector for Leak-Proof Catheter Coupling
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Solution Overview
Problem
Existing catheters, such as Levin tubes, face difficulties in accurately connecting syringes due to size differences at the connector and inlet, leading to potential air or substance leakage.
Innovation Solution
A multi-cap design with a body, cover portion, spout, and capping part, made of flexible materials like rubber or silicon, that accommodates various catheter sizes and securely connects syringes by using a coupling rib and groove system, ensuring a strong and leak-proof connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a common connector is used for Levin tube, then the connector structure is simple, but it is difficult to accurately connect syringes due to size differences between connector and syringe inlet
Solution Approach 1:
The patent introduces a multi-cap as an intermediary component between the Levin tube connector and the syringe. The multi-cap includes a body with an internal hole and a spout that receives the syringe inlet, while the connector connects to the Levin tube. This intermediary structure bridges the size mismatch between the connector and syringe inlet, enabling accurate connection without modifying the original simple connector design.
2Adaptability or versatility
If a multi-cap design is used to accommodate various catheter sizes, then versatility is improved, but device complexity increases
Solution Approach 1:
The patent applies parameter changes by making the body and cover portion flexible materials such as rubber or silicon. This flexibility allows the multi-cap to deform and adapt to catheters of various sizes without requiring multiple rigid structures. The elastic material can stretch and conform to different catheter diameters, providing versatility while maintaining a relatively simple single-piece structure.
Data Source
AI summary
Provided is a multi-cap for connecting a catheter and the multi-cap includes: a body having an internal hole formed in a longitudinal direction and having an end connected to a catheter; a cover portion disposed on an outer side of the body in the longitudinal direction of the body and spaced from the body such that the catheter is partially inserted between the outer side of the body and the cover portion. Further, a spout is formed at a second end of the body to transmit an injection substance from the outside to the hole and a capping part is connected to a side of the body to selectively close the inlet of the spout.