Mitomycin-C Reconstitution Kit with Absorbent Pads
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Solution Overview
Problem
Mitomycin-C, a chemotherapeutic agent used in cancer and ophthalmology, is hazardous and highly unstable, making its handling and application challenging due to toxicity and short shelf life, particularly in ophthalmologic procedures.
Innovation Solution
A kit containing a vial of mitomycin-C, a syringe, and a diluent carrier with sterilized water, along with a tray and pre-cut absorbent pads, allows for safe reconstitution and absorption of the drug into the pads, which can then be applied transiently to body tissue using a suction force, providing a protective and efficient application method.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mitomycin-C is handled and prepared in traditional ways, then the drug can be applied to treat diseases, but the toxicity and instability make it dangerous and difficult to handle
Solution Approach 1:
The system divides the drug handling process into separate functional components: a sealed vial for storage, a separate diluent carrier for reconstitution, and a tray with absorbent pads for application. This segmentation allows each component to be optimized for its specific function while containing the hazardous drug in a controlled environment, reducing exposure risks.
Solution Approach 2:
The patent introduces an intermediary system using absorbent pads as a mediator between the hazardous drug solution and the patient. The drug is first reconstituted in a controlled manner, then transferred to absorbent pads that can be handled and applied without direct exposure to the toxic liquid formulation, thus mediating the harmful effects.
2Productivity
If mitomycin-C is prepared in advance, then it can be used for treatment, but it is highly unstable with a brief shelf life
Solution Approach 1:
The system performs preliminary actions by providing pre-sterilized, sealed vials and pre-prepared absorbent pads that can be stored stably. The actual drug reconstitution is performed at the point of use, just before application, ensuring the drug is stable during storage but activated only when needed, thus resolving the contradiction between readiness and stability.
Solution Approach 2:
The patent employs disposable absorbent pads that are single-use and discarded after application. These short-living objects eliminate the need to store the unstable drug solution long-term, as each pad is prepared fresh and used immediately, then discarded. This approach prioritizes stability during storage over long-term shelf life of the drug itself.
3Ease of operation
If traditional drug preparation methods are used, then the drug can be applied, but the process is complex and requires multiple separate components
Solution Approach 1:
The patent merges multiple separate components (vial, diluent carrier, tray, absorbent pads) into an integrated system where all parts are contained together in a single package. This combining reduces the operational complexity by providing a complete kit that requires only opening the package and following simple steps, rather than managing multiple separate items.
Solution Approach 2:
The tray component serves multiple functions: it holds the absorbent pads, provides a workspace for reconstitution, and acts as a containing structure for the entire system. This multi-functionality reduces the overall number of separate components needed, simplifying the device while maintaining all necessary capabilities.
4Duration of action of stationary object
If the drug is reconstituted and stored, then it can be applied later, but it remains unstable and difficult to use in procedures
Solution Approach 1:
The patent implements a rapid reconstitution and application process that minimizes the time the drug remains in an unstable reconstituted state. The system is designed so that once the vial is opened and the drug is transferred to the absorbent pads, the entire process can be completed quickly, rushing through the unstable phase before application, thus maintaining reliability for procedure use.
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
The solution enables safe and simplified preparation and application of mitomycin-C, ensuring sterility and stability, reducing handling risks and extending the drug's shelf life for transient use in medical procedures.
Implementation Method 1
a suction force produced by the syringe
Implementation Method 2
the reconstituted drug is absorbed in an array of pre-cut absorbent pads or sponges
Implementation Method 3
the reconstituted pharmaceutical is absorbed into the one or more absorbent pads or sponges contained in the tray compartment
Data Source
AI summary
An apparatus and method for preparing a pharmaceutical for transient application includes a tray having a sealed compartment, a vial of an ophthalmic formulation of mitomycin-C, a diluent carrier containing sterilized water, and a syringe that are all contained together in a single package. The component parts of the apparatus are used together to reconstitute the contents of the vial with the water in the diluent carrier, and then draw the reconstituted drug into the sealed compartment of the tray by a suction force produced by the syringe. In the tray compartment, the reconstituted drug is absorbed in at least one absorbent pad. The absorbent pads may come in multiple shapes and or/sizes. The tray is opened to remove the pad and the absorbed drug from the tray compartment for use of the pad in transient application of the drug.