Medical Stapler Magazine Housing Connection
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Solution Overview
Problem
The connection between the housing and magazine in conventional medical staplers is difficult, leading to prolonged assembly times and reduced manufacturing efficiency, resulting in increased costs.
Innovation Solution
The medical stapler features a latching convexity shorter than the positioning convexity, with tilt angles between 15 to 75 degrees, and includes an auxiliary concavity with a tilted surface to facilitate easier connection, ensuring secure assembly without instability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the latching convexity is made longer to improve connection stability, then connection reliability is improved, but connection difficulty increases and assembly time increases
Solution Approach 1:
The connection interface is divided into two functional segments: a positioning convexity for alignment and a separate latching convexity for secure connection. This segmentation allows each element to be optimized independently - the positioning convexity can be longer for stable alignment without compromising the brevity of the latching convexity, thereby maintaining easy connection while ensuring reliability.
Solution Approach 2:
The auxiliary concavity acts as an intermediary feature that facilitates the connection process. It provides a guiding surface that helps align the latching convexity with the latching concavity during assembly, enabling reliable connection without requiring the latching convexity to be excessively long, thus reducing assembly time while maintaining connection stability.
2Reliability
If the latching convexity is made longer to improve connection stability, then connection reliability is improved, but manufacturing cost increases
Solution Approach 1:
By separating the positioning and latching functions into distinct convexities, the design avoids the need to manufacture a single long complex feature. Each convexity can be produced more efficiently with standard molding techniques, reducing manufacturing complexity and cost while maintaining connection reliability through the specialized latching convexity.
Solution Approach 2:
The auxiliary concavity serves as a manufacturing-friendly intermediary that simplifies the molding process. It provides a clear geometric guide that enables precise positioning of the latching convexity during assembly, reducing the need for complex precision machining and lowering overall manufacturing costs while ensuring stable connection.
3Reliability
If the magazine thickness is increased to improve connection stability, then connection reliability is improved, but ease of connection deteriorates
Solution Approach 1:
The connection interface is segmented into positioning and latching components, allowing the magazine thickness to be optimized for structural integrity while the latching convexity provides the necessary connection stability through its geometric design rather than increased thickness, maintaining ease of connection.
Solution Approach 2:
The latching convexity is designed with asymmetric geometry featuring a tilt angle between 15 to 75 degrees. This asymmetric design creates a mechanical interlock that ensures stable connection without requiring increased magazine thickness, as the angled surface provides directional guidance and secure engagement with the latching concavity, maintaining ease of connection while improving reliability.
Data Source
AI summary
There is provided a medical stapler allowing an easy and secure connection of a magazine and a housing during assembly. A medical stapler 10 according to the present invention includes a magazine 2 that comprises therewithin staples 4, a rail 5 for aligning the staples 4, and a mechanism for punching out staples; a lever 3 for actuating the mechanism for punching out the staples; and a housing 1 for enclosing and connecting the magazine and the lever. An inner surface of the housing includes a linear positioning portion continuing from an opening of the housing, and a latching portion for latching the magazine, a surface of the magazine tangent to the inner surface of the housing includes a positioning portion in accordance with form of the positioning portion of the housing, and a latching portion in accordance with form of the latching portion of the housing, and combining the positioning portion of the housing and the positioning portion of the magazine, and fitting the latching portion of the housing and the latching portion of the magazine connect the housing and the magazine.