Sterile Object Removal Device with Controlled Inflation
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Solution Overview
Problem
The existing methods for removing sterile objects from foil bags often result in uncontrolled inflation, making it difficult to cut open the bag and leading to adhesion issues, which complicates the removal process.
Innovation Solution
A device with a needle unit for piercing the foil bag, a gas connection for controlled inflation, a holding device to maintain the bag's shape, a cutting device for a defined cut, and a removal device with gripping or suction elements to extract the object, ensuring controlled inflation and easy removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the foil bag is inflated with sterile compressed air before cutting, then the adhesion of the foil bag to the transport container is prevented, but the inflation becomes uncontrolled making it difficult to cut open the foil bag
Solution Approach 1:
The patent applies parameter changes by controlling the inflation pressure and volume of the foil bag through a regulated gas supply system. The device includes a pressure regulator and flow controller that adjust the parameters of compressed air introduction, enabling precise control over the inflation process while maintaining ease of cutting.
Solution Approach 2:
The patent implements feedback control through sensors that monitor the internal pressure and volume of the foil bag during inflation. The system automatically adjusts the gas supply based on real-time measurements, ensuring controlled inflation that facilitates both easy cutting and prevents adhesion issues.
2Ease of operation
If the foil bag is completely cut off or incised to open it, then the foil bag can be opened, but the negative pressure presses the foil against the transport container causing adhesion problems
Solution Approach 1:
The patent applies preliminary action by inflating the foil bag with compressed air before the cutting operation. This pre-inflation creates internal pressure that counteracts the external negative pressure, preventing the foil from adhering to the transport container before cutting begins, thereby facilitating easier opening.
Solution Approach 2:
The patent implements preliminary anti-action by introducing compressed air into the foil bag to create internal pressure that opposes the external negative pressure. This counter-pressure prevents the foil from being pressed against the transport container, eliminating adhesion problems before the cutting operation occurs.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables controlled inflation and defined cutting of the foil bag, preventing adhesion and facilitating the removal of sterile objects while maintaining sterility.
Implementation Method 1
A device with a needle unit for piercing the foil bag, a gas connection for controlled inflation
Implementation Method 2
The holding unit can be pretensioned by means of at least one spring element, in particular a helical spring
Implementation Method 3
The negative pressure or vacuum that is normally present in the foil bag before it is cut open presses the foil against the transport container or tub
Data Source
AI summary
A device (10) for removing a sterile object (12) from a foil bag (14) includes a needle unit (16) with a hollow needle (18) for piercing the foil bag (14), a gas connection (20) arranged on the needle unit (16) for introducing gas via the hollow needle (18) into the foil bag (14), a holding device (22) for holding the foil bag (14), a cutting device (24) for cutting open the foil bag (14), and a removal device (26) for removing the object (12) from the cut open foil bag (14). The holding device (22) has at least one holding unit (28), which is formed in a planar manner on the holding device (22) and is mounted movably, for contacting the foil bag (14).