Retractable Medical Sheet Transfer Instrument
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Solution Overview
Problem
Current transfer instruments for medical sheets face challenges in efficiently transferring large medical sheets to treatment sites with minimal invasion and maintaining moisture, as they often require larger diameters and invasive procedures.
Innovation Solution
A transfer instrument with a carrier member featuring a shaft and support portion that can extend and retract within an outer cylinder, allowing the support portion to deform into a curved shape, reducing the device's diameter and enabling efficient transfer of larger medical sheets while maintaining contact for moisture retention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the support portion is designed to hold a medical sheet larger than the support portion in width, then the medical sheet can be transferred more effectively, but the device diameter increases leading to more invasive procedures
Solution Approach 1:
The support portion is designed to be flexible and changeable in shape between an extended position (for holding and transferring the medical sheet) and a retracted position (for reducing device diameter). This dynamic transformation allows the device to accommodate large medical sheets during transfer while maintaining a compact profile during retraction, resolving the contradiction between transfer efficiency and device invasiveness
Solution Approach 2:
The support portion transforms from a flat, extended configuration to a curved, three-dimensional configuration during retraction. This dimensional change allows the medical sheet to be held in a planar state for effective transfer while being compacted into a curved state for reduced device diameter, enabling the device to overcome the size limitation without sacrificing transfer capability
2Object-affected harmful factors
If the support portion is retracted into the outer cylinder with reduced diameter, then invasiveness is reduced, but the medical sheet may lose moisture due to exposure
Solution Approach 1:
The protruding portions of the medical sheet are brought into contact with each other during retraction, merging the edges of the medical sheet to form a sealed configuration. This merging action maintains moisture retention while allowing the support portion to be retracted to a reduced diameter, simultaneously achieving reduced invasiveness and maintained reliability
Solution Approach 2:
The medical sheet itself acts as a flexible barrier that can be folded and sealed. By utilizing the flexibility of the medical sheet to bring its protruding portions into contact, the system creates a self-sealing mechanism that retains moisture without requiring additional rigid protective structures, thus maintaining reliability while reducing device invasiveness
Data Source
AI summary
A transfer instrument includes an outer cylinder and a carrier member (first carrier member) including a shaft (first shaft) and a support portion (first support portion) having a sheet shape. The support portion is capable of holding a medical sheet larger than the support portion in a width direction orthogonal to an axial direction of the outer cylinder. The support portion is capable of holding the medical sheet so as to bring a portion of the medical sheet protruding from the support portion into contact with another portion of the medical sheet with the support portion retracted in the outer cylinder and deformed into a curved shape.