Intraocular Lens Insertion Guide Wall for Needle Alignment
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Solution Overview
Problem
Conventional intraocular lens insertion apparatuses have a barely visible hole for needle insertion, making it difficult for users to skillfully advance the needle due to reliance on experience and sense of touch.
Innovation Solution
An intraocular lens insertion apparatus with a guide wall member adjacent to the needle hole, guiding the needle and preventing contact with the lens body, and a configuration allowing the needle to move within a range that avoids contact with the lens, facilitating easier lubricant injection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a hole is provided for needle insertion, then lubricant can be injected into the accommodating member, but the hole is barely visible making it difficult to skillfully advance the needle
Solution Approach 1:
The guide wall member is formed with a color different from the accommodating member to enhance visibility of the hole location. This color contrast allows the user to easily detect the hole position without relying solely on tactile sense, thereby resolving the contradiction between ease of operation and difficulty of detecting the hole.
2Ease of operation
If the needle is advanced through the hole, then lubricant can be supplied to the intraocular lens, but there is risk of needle contact with the lens body
Solution Approach 1:
The guide wall member acts as an intermediary structure between the hole and the intraocular lens. It provides a guided path for the needle to follow, ensuring the needle advances along a controlled trajectory that delivers lubricant to the lens while preventing direct contact between the needle and the lens body, thus resolving the contradiction between ease of operation and harmful factors.
Solution Approach 2:
The guide wall member's geometry is designed to automatically guide the needle along the correct path without requiring additional control mechanisms. The needle naturally follows the guide wall structure, which self-regulates the insertion trajectory to avoid the lens body while ensuring proper lubricant delivery.
3Difficulty of detecting and measuring
If the hole is made larger for better visibility, then the hole becomes easier to detect, but the needle may contact the lens body more easily
Solution Approach 1:
The guide wall member is segmented into multiple surfaces including a guide surface and a side surface. This segmentation creates a structured pathway that guides the needle through the hole while constraining its movement to prevent contact with the lens body, allowing the hole to be sufficiently large for visibility without increasing the risk of harmful contact.
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
Enhances the ease of lubricant injection into the intraocular lens, ensuring more certain lubrication and reducing the risk of needle contact with the lens body during the insertion process.
Implementation Method 1
the guide wall member is configured to guide the needle of the syringe to the hole
Implementation Method 2
viscoelastic material such as hyaluronic acid is injected into the inside of the insertion apparatus as a lubricant for the intraocular lens
Implementation Method 3
viscoelastic material such as hyaluronic acid is injected into the inside of the insertion apparatus
Data Source
Figure 1
Figure 2
Figure 3A~3B
AI summary
An intraocular lens insertion apparatus includes an accommodating member integrally or independently formed on an apparatus body which is inserted into an eyeball, allowing arrangement of the intraocular lens in the apparatus body by accommodating the intraocular lens therein, and having a hole through which a needle of a syringe which supplies a lubricant to the intraocular lens passes. Further, the intraocular lens insertion apparatus includes a guide wall member formed on the accommodating member at a position adjacent to the hole, and being configured to guide the needle of the syringe to the hole.