Sterile Inner Tray Handle Assembly for Contamination-Free Removal
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Solution Overview
Problem
Conventional medical kits lack an effective mechanism for a sterile nurse to remove a sterilized inner tray from a non-sterile outer tray without contaminating the sterilized medical instruments, due to insufficient clearance between the trays.
Innovation Solution
A handle assembly is integrated with the inner tray, comprising a handle and an elongated member with interlocking ends, allowing the inner tray to be securely fastened and easily lifted out of the outer tray without direct contact, thereby preventing contamination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the inner tray is placed directly inside the outer tray with minimal clearance, then the medical kit is compact and efficient, but the sterile nurse cannot remove the inner tray without contacting the non-sterile outer tray
Solution Approach 1:
A handle assembly serves as an intermediary tool between the sterile nurse and the inner tray. The handle assembly includes a handle that extends through the outer tray's rim and a fastening mechanism that secures the inner tray, allowing the nurse to grip and remove the inner tray without direct hand contact with the non-sterile outer tray surfaces.
Solution Approach 2:
The handle assembly is divided into separate functional components: a handle portion that interacts with the sterile nurse's hand, a fastening mechanism that secures the inner tray, and an elongated member that connects these components. This segmentation allows each part to perform its specific function while maintaining sterility boundaries.
2Ease of operation
If the inner tray is securely fastened to the outer tray, then the medical kit is stable during transport, but the inner tray cannot be easily removed by the sterile nurse
Solution Approach 1:
The fastening mechanism transitions from a static locked state during transport to a dynamic unlockable state during surgery. The mechanism allows the inner tray to be securely fastened to the outer tray during transport for stability, then easily unlocked and removed by the sterile nurse when needed, providing both stability and ease of operation at different stages.
3Adaptability or versatility
If the handle assembly uses rigid material, then the structure is strong and durable, but the handle cannot be flexibly positioned or adjusted
Solution Approach 1:
The handle assembly uses different material properties in different locations: the elongated member is made of flexible material that can be positioned and adjusted, while the handle portion and fastening mechanism use rigid materials to provide structural strength and durability. This local differentiation allows the handle to be both adaptable in positioning and strong in execution.
Data Source
AI summary
A handle assembly facilitates the removal of a sterile inner tray containing sterile medical instruments from a medical kit during an OR procedure. The handle assembly may have a handle coupled with an elongated member having a male end and a female end. The inner tray may be wrapped in medical packaging. Subsequently, the elongated member may be wrapped around the inner tray and the male and female ends interconnected. The inner tray may be positioned inside of an outer tray. A bacterial barrier may be formed over a portion of the outer tray to enclose the inner tray. The inner tray, including the medical instruments, may then be sterilized by a sterilization process. During an OR procedure, the handle assemble allows a sterile nurse to remove the sterile inner tray from the non-sterile outer tray without making contact with the non-sterile outer tray and/or contaminating the sterile medical instruments.