IUS Inserter Slider Locking for Accurate String-Guided Placement
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Solution Overview
Problem
Existing inserters for intrauterine devices (IUDs) and systems (IUSs) face challenges in correctly positioning the devices due to the need for manual handling of removal strings, which can lead to misalignment, damage, and difficulty in inserting devices with larger diameters, especially T-shaped systems.
Innovation Solution
An inserter with a slider mechanism and locking means that automatically locks and releases the removal strings, ensuring the device remains immobile during insertion, eliminating the need for manual handling and enhancing security and hygiene.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If manual handling of removal strings is used during insertion, then the device can be positioned in the uterus, but misalignment and damage occur due to difficulty in controlling string tension and device positioning
Solution Approach 1:
The inserter automatically grips and manages the removal strings through its structure, eliminating the need for manual string handling. The device self-positions by utilizing the string tension mechanism built into the inserter, allowing accurate positioning without operator interference with the strings.
Solution Approach 2:
The inserter acts as an intermediary tool that mediates between the operator and the removal strings. Instead of directly handling the strings, the operator manipulates the inserter, which in turn controls the strings and device positioning through its mechanical design.
2Adaptability or versatility
If the insertion tube diameter is increased to accommodate T-shaped systems, then larger devices can be inserted, but correct positioning of the device becomes extremely difficult
Solution Approach 1:
The removal strings serve as an intermediary mechanism that provides tactile feedback and mechanical control for positioning the device within the larger diameter insertion tube. The strings allow the operator to precisely control device position and orientation despite the increased tube diameter.
Solution Approach 2:
The device is loaded onto the inserter with the removal strings预先 attached and configured before insertion. This preliminary setup ensures that the strings are properly positioned to control device placement during the insertion process, even in larger diameter tubes.
3Ease of operation
If the removal string is pulled during insertion, then the device can be drawn into the insertion tube, but the string may become damaged or the device may become misaligned
Solution Approach 1:
The inserter structure serves as a protective intermediary between the removal string and external forces. The string runs through protected channels or guides within the inserter, preventing direct exposure to damage while still allowing controlled tension to draw the device into the tube.
Solution Approach 2:
The inserter design incorporates protective features such as guiding channels, tension distribution mechanisms, or cushioning elements that prevent excessive force from damaging the string or misaligning the device before insertion is complete.
4Ease of operation
If simple push-in technique is used for flexible devices, then insertion is simplified, but the technique is not suitable for devices requiring contracted state insertion
Solution Approach 1:
The inserter is designed with universal applicability to handle both flexible devices (via push-in technique) and rigid T-shaped systems (via string tension technique). The device can accommodate different insertion methods depending on the specific IUD type being inserted.
Solution Approach 2:
The inserter allows dynamic adjustment of the insertion technique based on device requirements. For flexible devices, the plunger can simply push the device in; for rigid T-shaped systems, the removal strings can be tensioned to draw the device into the tube, providing operational flexibility.
Data Source
AI summary
The invention relates to an inserter for an intrauterine system, comprising a handle (3) having a longitudinal opening (8) at its first end, said opening (8) having a longitudinal axis parallel to the longitudinal axis of the inserter, a first end (8a) and a second end (8b), a moveable slider (5) arranged in said longitudinal opening (8) and having a first end (5a) and a second end (5b), a plunger (2) attached to the handle (3), an insertion tube (6) arranged around the plunder (2) having a first end and a second end, with its second end attached to the slider (5), wherein the inserter further comprises locking means for reversibly locking the intrauterine system in relation to the plunder (2) via a removal string of the intrauterine system, said locking means being controllable by the slider (5) and/or the insertion tube (6).