Fluid Communication Device for Glaucoma Pressure Regulation
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Solution Overview
Problem
Current surgical procedures for glaucoma, such as trabeculectomy and aqueous shunts, face challenges including increased risk of infection and unpredictable intraocular pressure regulation due to mechanical blockages and scar tissue formation, while laser surgery is complex and inefficient in managing intraocular pressure.
Innovation Solution
A fluid communication device with a member and fluid passage is positioned in the trabecular meshwork to selectively allow fluid flow from the anterior chamber to Schlemm's canal or suprachoroidal space, utilizing dissolvable materials and varying geometries to regulate intraocular pressure, and featuring a dissolvable head to ensure proper fluid communication and minimize tissue disruption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If trabeculectomy is performed to create a drainage pathway, then aqueous outflow is improved, but the risk of infection increases due to creating an open pathway for bacteria
Solution Approach 1:
The patent introduces a drainage implant as an intermediary device that provides a controlled pathway for aqueous humor drainage. The implant acts as a mediator between the anterior chamber and the drainage site, allowing fluid passage while maintaining a barrier against bacterial contamination. The implant's structure includes a body with flow channels that can be positioned within the eye tissue, providing a defined route for fluid outflow that does not require creating open pathways that expose the eye to surface bacteria.
2Stress or pressure
If aqueous shunts are used to drain fluid, then intraocular pressure is reduced, but mechanical blockages and scar tissue formation cause unpredictable pressure regulation
Solution Approach 1:
The patent incorporates a valve mechanism within the drainage implant that provides dynamic pressure regulation. The valve is designed to open at specific pressure thresholds and close when pressure is reduced, creating a self-regulating system. This dynamic mechanism allows the implant to automatically respond to pressure changes, maintaining reliable pressure control without being subject to mechanical blockages or scar tissue formation that would affect static shunt systems.
Solution Approach 2:
The patent utilizes materials and structural designs that change their properties in response to pressure parameters. The valve mechanism and flow channels are designed to exhibit pressure-dependent behavior, where the degree of opening or closing varies with the pressure differential across the implant. This parameter-based control ensures consistent pressure regulation regardless of tissue changes over time.
3Reliability
If laser surgery is performed to manage intraocular pressure, then treatment is provided, but the procedure is complex and inefficient
Solution Approach 1:
The patent divides the drainage function into separate modular components: a body with flow channels, a valve mechanism, and tissue engagement features. This segmentation allows for simplified surgical implantation compared to complex laser procedures, as the implant can be inserted as a discrete device rather than requiring complex tissue manipulation. The modular design also facilitates manufacturing and quality control.
Data Source
AI summary
A fluid communication device is configured to provide fluid flow between first and second chambers separated by tissue. The fluid communication device includes a member configured for insertion through and engagement of the tissue. The member includes a first opening near a first end of the member for fluidic communication with the first chamber and a second opening near a second end of the member for fluidic communication with the second chamber, the fluid member including a fluid passage that provides fluidic communication between the first and second chambers. The fluid communication device is configured to be positioned with the eye to provide fluid communication between an anterior chamber of the eye and Schlemm's canal.