Intraocular Lens Insertion Device with Deforming Placement Section
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing intraocular lens insertion devices face challenges in accurately positioning and releasing intraocular lenses due to the thin circumferential edge of the optical portion and the difficulty in aligning the plunger with the lens, leading to potential damage or improper placement.
Innovation Solution
An intraocular lens insertion device with a deforming lens placement section, featuring an abutting surface on the insertion device main body and an abutted surface on the insertion tube, allows for precise positioning and secure attachment of the intraocular lens, utilizing a slit for easy placement and deformation to reduce the risk of damage during insertion and release.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the intraocular lens is placed through a lens insertion port of the cartridge, then the lens can be inserted into the eye, but the circumferential edge of the optical portion is extremely thin making it difficult to position the plunger accurately
Solution Approach 1:
A positioning protrusion is introduced as an intermediary element between the lens and plunger. This protrusion extends from the lens surface into the lens placement chamber, providing a physical reference point that the plunger can accurately engage with. This mediator solves the positioning difficulty caused by the thin circumferential edge by creating a more accessible and locatable feature for the plunger to target.
Solution Approach 2:
The positioning protrusion creates a simplified geometric representation of the lens positioning requirement. Instead of requiring precise alignment with the complex thin circumferential edge, the system uses the protrusion as a copied reference feature that is easier to locate and engage, effectively transforming the positioning problem into a simpler geometric engagement task.
2Object-affected harmful factors
If the incision width is reduced to minimize surgical burden, then patient comfort improves, but the intraocular lens cannot be inserted unless it is folded
Solution Approach 1:
The lens placement chamber is designed with flexible walls that can dynamically change volume. The chamber expands to accommodate the folded lens during insertion and then contracts to push the lens through the narrow incision. This dynamic volume change enables the system to handle the folded lens configuration while maintaining the ability to deliver it through a small opening.
Solution Approach 2:
The lens placement chamber is constructed with flexible material that allows it to deform and adapt its shape. This flexibility enables the chamber to compress the folded lens into a compact form for insertion through the small incision, then expand to provide a pushing surface for lens delivery. The flexible shell accommodates the size transformation required for微创 surgery.
3Volume of moving object
If the lumen of the cartridge is narrowed to fold the intraocular lens smaller, then insertion through smaller incision becomes possible, but the circumferential edge becomes thinner and harder to position
Solution Approach 1:
The positioning protrusion is pre-formed on the lens before insertion into the cartridge. This preliminary structural feature ensures that when the lens is folded and placed in the narrow lumen, the protrusion remains accessible and provides a predetermined positioning point for the plunger, eliminating the need for complex real-time alignment procedures.
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
There is provided an intraocular lens insertion device capable of easily positioning a circumference of an optical portion of an intraocular lens with respect to a distal end of a plunger. An intraocular lens insertion device 1 comprises: a cartridge 3 having a lens placement section 16 in which an intraocular lens 2 is to be placed; an insertion device main body 4 having a plunger 5 for pushing out the intraocular lens 2 with the cartridge 3 being attached to the insertion device main body 4; and a deforming means 6 for deforming the lens placement section 16. A slit 21 is formed on the lens placement section 16, and the deforming means 6 deforms the lens placement section 16 in a diameter-decreasing direction thereof when attaching the cartridge 3 to the insertion device main body 4. In this way, the intraocular lens 2 is settled at a predetermined position in the lens placement section 16, thus making it possible to position a circumference of an optical portion 2a of the intraocular lens 2 with respect to a distal end portion of the plunger 5.