Medicinal-liquid Administering Device Power Transmission Cover
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Solution Overview
Problem
The existing medicinal-liquid administering devices are prone to foreign matter adhesion on the reusable-side power transmission parts when the disposable part is unattached, leading to ineffective transmission of driving force to the plunger rod.
Innovation Solution
A medicinal-liquid administering device with a reusable part and a disposable part, featuring a housing with an openable/closable cover part that inhibits foreign matter adhesion by automatically opening when the disposable part is attached and closing when detached, allowing for secure engagement and disengagement without manual intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the reusable-side power transmission part is exposed outward when the disposable part is unattached, then the attachment and detachment operation is simplified, but foreign matter such as grit and dust may adhere to the reusable-side power transmission part, causing ineffective transmission of driving force
Solution Approach 1:
The patent extracts the reusable-side power transmission part from the housing and exposes it outward, allowing simplified attachment and detachment operations. The disposable part can be directly attached without complex manipulation, as the power transmission part is readily accessible for engagement.
Solution Approach 2:
The patent applies preliminary protective action by providing a protective cover that can be positioned to shield the exposed reusable-side power transmission part from foreign matter adhesion, while still allowing the disposable part to be attached and detached. This preventive measure addresses the foreign matter problem before it affects the driving force transmission.
2Reliability
If the reusable-side power transmission part is covered when the disposable part is unattached, then foreign matter adhesion is prevented, but the attachment and detachment operation becomes more complex
Solution Approach 1:
The patent implements preliminary action by providing a protective cover that is positioned in advance to shield the reusable-side power transmission part. This cover is designed to be automatically displaced or opened when the disposable part is attached, so the protective action is maintained during storage and transport but does not interfere with the attachment operation.
Solution Approach 2:
The patent makes the protective cover dynamic rather than fixed. The cover can move between a closed protective position and an open position that allows attachment and detachment. This dynamic design ensures the cover provides protection when needed but does not complicate the operation when the disposable part is being attached or detached.
3Extent of automation
If manual intervention is required to open the cover during attachment, then the cover can be precisely controlled, but the operation becomes more complex and time-consuming
Solution Approach 1:
The patent designs the protective cover to be automatically displaced by the disposable part itself during the attachment process. The disposable part's structure or attachment motion inherently opens or moves the cover, eliminating the need for separate manual intervention. This preliminary arrangement ensures the cover is opened at the precise moment needed without adding operational complexity.
Solution Approach 2:
The patent implements self-service by designing the system so that the disposable part automatically performs the function of opening the protective cover during attachment. The attachment process itself activates the cover opening mechanism, so no additional manual steps are required. The system serves itself by using the attachment motion to both open the cover and engage the power transmission part.
4Reliability
If the cover remains closed during attachment, then foreign matter adhesion is prevented, but the disposable part cannot be properly attached to the reusable part
Solution Approach 1:
The patent makes the protective cover dynamic, allowing it to transition between closed and open states. During storage and transport, the cover remains closed to protect the reusable-side power transmission part. During attachment, the cover automatically opens to allow the disposable part to engage with the power transmission part. This dynamic behavior ensures both protection and attachment capability are maintained at appropriate times.
Solution Approach 2:
The patent arranges the protective cover and disposable part structure in advance so that the attachment process naturally displaces the cover. The cover is positioned and designed to be opened by the disposable part's attachment motion, ensuring that protection is maintained until the moment of attachment, at which point the cover is automatically opened without requiring separate action.
Data Source
AI summary
A device includes: a first member comprising a first-member-side power transmission part; and a second member comprising a second-member-side power transmission part configured to be attachable to and detachable from the first member, the second member being a part of a medicinal-liquid administering device. The first-member-side power transmission part and the second-member-side power transmission part are configured to be engaged with each other for administering a medicinal liquid into a living body. The second member is configured to open a housing covering the first-member-side power transmission part to engage the second-member-side power transmission part with the first-member-side power transmission part at a time of attaching the first member to the second member.