Skin Stapler Sheath for Plant-Based Handle Recycling
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Solution Overview
Problem
Existing disposable skin staplers are not designed for sustainable disposal, as they are typically made of plastics that become biohazard waste after use, requiring incineration and contributing to pollution, with no consideration for recyclable components or eco-friendly materials.
Innovation Solution
The use of a sheathing system integrated with stapler components made from wood pulp products, such as Molded Pulp Fiber, to protect handle and actuator grips from contamination, allowing for separation and recycling of clean parts while the biohazardous components are disposed of separately.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If traditional plastic materials are used to make disposable skin staplers, then the staplers can be easily manufactured and disposed of as single-use items, but the entire stapler becomes biohazard waste requiring incineration, increasing pollution and material consumption
Solution Approach 1:
The stapler is divided into two distinct segments: a reusable stainless steel mechanism housing that contains the stapling mechanism, and a disposable handle assembly made from moldable plant-based material. This segmentation allows the clean metal components to be recovered and reused while only the contaminated plant-based handle is disposed of, significantly reducing biohazard waste volume compared to traditional all-plastic disposable staplers.
Solution Approach 2:
The invention implements a recovery system where the stainless steel mechanism housing is separated from the disposable handle assembly after use. The clean metal housing is recovered, cleaned, and reused for multiple stapling operations, while only the plant-based handle that contacted blood is discarded. This recovering principle directly reduces the volume of biohazard waste requiring incineration.
2Adaptability or versatility
If wood pulp products are used to construct handle and actuator grip components, then eco-friendly recyclable materials are utilized, but the material strength may be insufficient compared to hard plastics
Solution Approach 1:
The handle assembly is constructed from moldable plant-based material, creating a composite structure that combines the biodegradability and recyclability of plant materials with the structural requirements of a surgical tool handle. This composite approach allows the use of eco-friendly materials while maintaining sufficient strength through proper material formulation and molding techniques.
Solution Approach 2:
The plant-based material undergoes parameter changes during the molding process, where heat, pressure, and time are applied to transform the raw plant material into a structurally sound handle assembly. This parameter control enables the plant-based material to achieve the necessary mechanical properties for surgical use while retaining its eco-friendly characteristics.
3Reliability
If the entire stapler is subjected to sterilization procedures before each use, then biohazard contamination is prevented, but the process is labor intensive and requires copious amounts of hot water and cleaning chemicals
Solution Approach 1:
The design extracts the sterilization requirement from the entire stapler system by using a stainless steel mechanism housing that can be easily cleaned and sterilized between uses, while the plant-based handle assembly is designed as a disposable component that does not require sterilization. This extraction eliminates the need for labor-intensive sterilization of the entire device, reducing time and resource consumption.
4Strength
If hard plastics are used to achieve necessary material strength for stapler components, then structural integrity is maintained, but the materials become non-recyclable biohazard waste after use
Solution Approach 1:
The stapler is segmented into a permanent stainless steel mechanism housing that maintains structural integrity and can be reused, and a disposable plant-based handle assembly. This segmentation eliminates the need for hard plastics in the disposable portion, allowing the handle to be made from recyclable plant materials while the metal housing provides the necessary structural strength for multiple uses.
Data Source
AI summary
A surgical stapler uses a sheath 1 to protect a handle assembly 80 made of paper pulp products or other eco-friendly material. The sheath includes seams 3 and grip tabs 2 and encloses the handle assembly while the handle assembly is attached to a staple mechanism housing 15. After surgical use or exposure to biohazards, the grip tabs 2 of the sheath may be pulled, uncovering the handle assembly, separating the handle assembly from the staple mechanism housing and allowing the protected handle assembly to be dropped into clean bin container for eco-friendly recycling. The handle assembly and components of the staple mechanism housing are designed to account for the decreased material strength of the recyclable handle assembly. After use, the fouled sheath and staple mechanism housing are disposed in traditional methods.