Dispensing Tip Holder Prevents Deformation During Pipette Attachment
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Solution Overview
Problem
Attaching a dispensing tip to a pipette can be challenging due to the need for precise force application to ensure a secure fit, as excessive force can deform the tip, while insufficient force may lead to loose attachment or detachment during use, especially when the pipette tip is worn.
Innovation Solution
A dispensing tip holder with a peripheral wall and insertion portion designed to guide the tip into place, allowing the outer peripheral surface to abut against an edge, preventing deformation and ensuring reliable attachment without manual fingertip pressure, featuring a stable base for support and optional lid for containment and sterilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a user presses the dispensing tip into the tip of the pipette with relatively large force while holding the dispensing tip with fingertips, then the dispensing tip can be attached securely to the pipette, but the dispensing tip may become deformed due to contact of the palm with the tip of the dispensing tip
Solution Approach 1:
The holder acts as an intermediary device between the user's hand and the dispensing tip. The user holds the holder instead of directly holding the dispensing tip, allowing secure attachment force to be applied through the holder's structure without the palm contacting and deforming the dispensing tip's narrowed tip portion
Solution Approach 2:
The holder is divided into distinct functional portions: a holding portion for the user's fingers, a peripheral wall that guides the dispensing tip, and an insertion portion that applies force at the correct location. This segmentation allows different parts to perform specific functions - the peripheral wall guides alignment while the insertion portion applies attachment force without deforming the dispensing tip
2Shape
If a user applies insufficient force when attaching the dispensing tip to the pipette, then the dispensing tip remains und deformed, but the attachment becomes loose and the dispensing tip may come off during dispensing work
Solution Approach 1:
The holder provides a structured intermediary mechanism that translates the user's gripping force into controlled attachment force. The peripheral wall and insertion portion work together to ensure the force is applied at the correct location and magnitude, achieving reliable attachment without requiring the user to judge the appropriate force level
Solution Approach 2:
The holder's peripheral wall and insertion portion are pre-configured to guide the dispensing tip into the correct position and apply force at the optimal location before the attachment is complete. This preliminary guidance ensures that when the user applies force, it is directed correctly to achieve secure attachment without deformation
Data Source
AI summary
A dispensing tip holder is used when a dispensing tip is attached to a tip of a pipette, and includes a peripheral wall having a shape surrounding an outer peripheral surface of the dispensing tip, and an insertion portion having an insertion opening into which the dispensing tip is to be inserted. The peripheral wall has a first end into which the dispensing tip is to be inserted, and has a second end provided at a position opposite to the first end. The insertion portion is formed in the peripheral wall such that an outer peripheral surface of the dispensing tip abuts against an edge of the insertion opening, and is formed in the peripheral wall such that a tip of the dispensing tip does not project from the second end of the peripheral wall, when the dispensing tip is inserted into the insertion opening from the first end.