Reusable Surgical Injector With Cartridge-Cannula Segmentation
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Solution Overview
Problem
The use of single-use syringes and cannulas for injecting substances during surgical procedures leads to significant medical waste, environmental pollution, and inefficient sterilization resource consumption, while also causing procedural inefficiencies and potential supply disruptions.
Innovation Solution
A sterilizable and reusable injection device comprising a body, compartment, connector, and plunger assembly, designed to securely hold and dispense cartridges containing substances, allowing for multiple uses and reducing waste.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If single-use syringes and cannulas are used for each surgical procedure, then sterility and procedural reliability are improved, but medical waste and sterilization resource consumption increase significantly
Solution Approach 1:
The injection device is divided into two segments: a reusable body (syringe hub) and a disposable cartridge-cannula assembly. This segmentation allows the non-sterile reusable body to be sterilized and reused multiple times, while only the sterile cartridge-cannula assembly is discarded after single use, thereby reducing medical waste while maintaining sterility requirements.
Solution Approach 2:
The reusable syringe hub body is designed to be universal and can accommodate multiple different cartridges containing various substances (OVDs, liquids, gels, solutions, emulsions, suspensions). This multi-functionality allows a single reusable body to serve multiple surgical procedures with different substances, reducing the need for multiple separate syringes and associated packaging.
2Quantity of substance
If multiple single-use syringes are employed to inject desired amounts of treatment substances, then the desired treatment volume and reapplication capability are achieved, but device complexity and setup time increase
Solution Approach 1:
Multiple cartridges containing different substances or volumes can be merged into a single reusable syringe hub body by sequentially attaching them. This combining approach allows the surgeon to access multiple treatment substances through one unified device rather than managing multiple separate syringes, reducing setup complexity and the number of devices needed.
3Reliability
If multiple single-use syringes and cannulas are used during a surgical procedure, then adequate treatment substance delivery is ensured, but procedural efficiency decreases due to setup requirements
Solution Approach 1:
The reusable syringe hub body is prepared and sterilized in advance, and cartridges can be pre-filled with treatment substances. During the surgical procedure, the pre-prepared reusable body with attached cartridges is ready for immediate use, eliminating the need for setup and assembly of multiple separate syringes during the procedure, thereby improving procedural efficiency while ensuring reliable treatment delivery.
4Reliability
If single-use syringes and cannulas are individually packaged to maintain sterility, then sterility is maintained, but storage space and transportation requirements increase
Solution Approach 1:
The device is segmented into a reusable body and a disposable cartridge-cannula assembly. The reusable body requires minimal packaging and can be sterilized and stored efficiently. The cartridge-cannula assembly is individually packaged only when needed for sterility, but since the reusable body can accommodate multiple cartridges over time, the overall packaging volume and storage space requirements are reduced compared to having multiple fully packaged single-use syringes.
Data Source
AI summary
The present disclosure provides sterilizable and re-usable devices for injecting substances including, without limitation, viscoelastics, liquids, gels, solutions, emulsions, suspensions, other fluids, and the like, during surgical procedures.