Needleless Syringe Injection Head With Integrated Vial Loading
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Solution Overview
Problem
The existing needleless syringes require cumbersome medicine suctioning operations, involving separation of the medicine barrel from the vial, leading to issues like vial loss and contamination, and incur high costs due to the combination of the medicine barrel and vial not meeting safety requirements for long-term drug contact.
Innovation Solution
A needleless syringe design that integrates a vial within the syringe body, allowing efficient medicine suctioning and injection without separating the vial, featuring a piston rod with a medicine liquid channel and check valve for seamless operation, and a locking mechanism for secure attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the medicine barrel and vial are combined as one for single use, then the medicine suctioning operation becomes simpler, but the cost increases and safety requirements for long-term drug contact cannot be met
Solution Approach 1:
The device is divided into separate functional components: a reusable syringe body made of medical-grade plastic that meets long-term drug contact safety requirements, and a disposable vial containing the medicine. This segmentation allows the syringe body to be designed for durability and safety while the vial can be optimized for single-use convenience, resolving the contradiction between operational simplicity and safety compliance.
2Ease of operation
If the vial is separated from the syringe body after medicine suctioning, then the injection operation can be performed, but vial loss and contamination occur
Solution Approach 1:
The vial is nested within the syringe body during the suctioning phase, and the needleless injection mechanism is integrated into the syringe body. This nested design allows the vial to remain protected within the syringe housing throughout the entire process, eliminating vial loss and contamination risks while enabling seamless transition from suctioning to injection without separation.
3Object-affected harmful factors
If a needleless syringe design with integrated vial is used, then vial loss and contamination are prevented, but the device complexity increases
Solution Approach 1:
The injection mechanism is merged with the syringe body to form an integrated needleless injection device. The piston rod, medicine liquid channel, and injection micropore are combined into a single cohesive structure that works with the nested vial. This merging reduces the number of separate components and assembly steps, thereby reducing device complexity while maintaining the benefits of preventing vial loss and contamination.
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 efficient and effortless medicine suctioning and injection, preventing vial loss and contamination, while meeting safety requirements for long-term drug contact without the need for vial separation.
Implementation Method 1
the piston rod is provided therein with a medicine liquid channel communicating the medicine liquid receiving chamber with the vial
Implementation Method 2
a piston rod comprising: a piston disposed within the chamber and configured to move within the chamber in an front-rear direction
Data Source
Figure 1
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AI summary
The present disclosure relates to an injection head of a needleless syringe, needleless syringe body, and needleless syringe. The injection head includes a medicine barrel and a piston rod. The medicine barrel opens at a rear end and has an injection micropore at a front end. A piston of a piston rod is movable within a chamber in an front-rear direction, the piston and a sidewall and a front wall of the medicine barrel jointly define a medicine liquid receiving chamber. The piston rod is provided therein with a medicine liquid channel. The injection head and the vial can be mounted together on the needleless syringe body, the medicine liquid can flow via the medicine liquid channel into the medicine liquid chamber, and the piston rod can eject medicine liquid within the medicine liquid receiving chamber outside via the injection micropore. According to the solution of the present disclosure, a vial, such as a cartridge vial and the like, can be received within a needleless syringe body, and medicine suctioning and injection can be completed efficiently and effortlessly during each use, where there is no need for removing the vial or separating the medicine barrel from the vial.