Petri Dish Ring Gripping Mechanism for Single-Handed Handling
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Solution Overview
Problem
Conventional Petri dishes are difficult to handle and operate single-handedly, leading to potential contamination and damage due to their design, which requires skilled operation and can result in accidents during liquid transfer and movement.
Innovation Solution
A Petri dish design featuring a detachable dish body and lid with a ring for gripping on the dish body, allowing for stable single-handed operation through the use of upwardly angled brim portions and strategically placed gaps, enabling secure handling and accurate manipulation without dislodging the lid.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the dish lid is made detachable for easy operation, then ease of operation is improved, but the risk of contamination increases
Solution Approach 1:
The Petri dish is divided into two independent parts: the dish body and the dish lid. This segmentation allows the lid to be easily detached and reattached, facilitating single-handed operation while maintaining contamination protection when properly sealed.
Solution Approach 2:
A ring for gripping is introduced as an intermediary element on the dish body. This ring provides a stable gripping surface that prevents direct hand contact with the lid during operation, reducing the risk of accidental lid displacement and contamination.
2Ease of operation
If the ring for gripping has the same diameter as the dish lid, then ease of gripping is improved, but the stability of holding the dish body deteriorates
Solution Approach 1:
The ring for gripping is designed with asymmetric dimensions relative to the dish lid: its outer diameter is intentionally made larger than the lid's diameter. This asymmetric design creates a stable gripping configuration where the ring extends beyond the lid boundaries, preventing accidental lid contact during handling.
Solution Approach 2:
The ring for gripping is positioned on the side wall of the dish body, extending in a radial dimension beyond the lid's outer edge. This dimensional extension creates a separate gripping zone that is independent from the lid, allowing stable holding without interfering with lid operation.
3Ease of operation
If the dish lid is opened wide for liquid transfer operations, then ease of operation is improved, but the risk of contamination increases
Solution Approach 1:
The ring for gripping serves as a mediator that provides a stable reference point for single-handed lid opening. The upwardly angled brim portions on the ring create a mechanical stop that controls lid opening angle, allowing sufficient access for liquid transfer while preventing excessive opening that would expose the culture to contamination.
Solution Approach 2:
The geometry of the ring for gripping, specifically the upwardly angled brim portions, is designed to control the maximum opening angle of the lid. This geometric parameter change ensures the lid opens to an optimal angle that balances operational accessibility with contamination protection.
4Object-affected harmful factors
If the Petri dish is made fragile to maintain sterility, then purity is improved, but the strength deteriorates
Solution Approach 1:
The Petri dish is segmented into a dish body and a detachable lid, allowing the main body to retain its fragile but sterile characteristics while the lid provides protective functionality. This segmentation enables the dish to maintain sterility through proper sealing while reducing the risk of damage during handling.
Solution Approach 2:
The ring for gripping acts as a protective intermediary that distributes handling forces away from the fragile dish body and lid. By providing a robust gripping surface on the side wall, the ring prevents direct hand contact with the delicate components, reducing the risk of accidental damage while maintaining sterility.
Data Source
AI summary
The present invention relates to a Petri dish comprising a dish body which comprises a bottom wall and a side wall which extends along an outer circumference of the bottom wall, the bottom wall and the side wall of the dish body form an upper opening space adapted to accommodate cultures; a dish lid adapted to cover the upper opening space from above the dish body, the dish lid comprises a top wall and a side wall which extends along an outer circumference of the top wall, wherein the dish body and the dish lid are two independent members that are detachable, and the side wall of the dish body is formed on the outer side thereof with a ring for gripping that extends circumferentially, and the ring for gripping having an outer diameter larger than that of the dish lid. The Petri dish according to the present invention has a simple structure. Through the ring for gripping on the dish body, the user can easily hold the dish body without accidentally dislodging the dish lid or sliding it off the dish body.