Frontal Sinus Implant Anchoring for Targeted Drug Release
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Solution Overview
Problem
Existing methods for site-specific drug delivery in the sinus system, particularly the frontal sinus, are inefficient and do not effectively utilize the frontal sinus drainage pathway for targeted drug delivery.
Innovation Solution
A fluid-dispensing implant is implanted within the frontal sinus system, comprising an anchoring structure and a dispensing structure, which allows for controlled delivery of pharmaceutical agents directly into the frontal sinus drainage pathway over an extended period, using an inflatable structure with dispensing holes or a rigid container with external ports for fluid release.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If a balloon is placed in situ and filled with drug-containing material and left in place for an extended period, then drug delivery duration is improved, but device complexity and risk of complications increase
Solution Approach 1:
The device is divided into separate functional components: an anchoring structure for positioning, a fluid reservoir for drug storage, and a dispensing structure for controlled release. This segmentation allows each component to be optimized independently while reducing overall device complexity compared to a single integrated balloon system.
Solution Approach 2:
A catheter is introduced as an intermediary tool to deliver the implant and fluid into the sinus system. The catheter serves as a mediator during the procedure, allowing precise placement of the anchoring structure and fluid reservoir without requiring complex self-positioning mechanisms.
2Productivity
If drug-containing material is delivered directly into the frontal sinus drainage pathway, then drug delivery efficiency is improved, but device complexity increases
Solution Approach 1:
The dispensing structure is positioned specifically within the frontal sinus drainage pathway to deliver drug-containing fluid directly to the target area. This localized delivery approach improves drug delivery efficiency by ensuring the medication reaches the exact location where it is needed, rather than being distributed throughout the entire sinus cavity.
Solution Approach 2:
The anchoring structure is positioned and secured within the frontal sinus cavity before the fluid reservoir is filled and activated. This preliminary positioning ensures that when the dispensing structure releases the drug-containing fluid, it is already directed into the drainage pathway at the correct location, optimizing delivery efficiency.
3Adaptability or versatility
If an inflatable structure is used as fluid reservoir, then adaptability to anatomical variations is improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The inflatable structure allows for parameter changes in volume and shape based on the specific anatomical requirements of each patient. By adjusting the amount of fluid introduced into the reservoir and controlling the inflation process, the device can adapt to various sinus cavity sizes and configurations without requiring custom manufacturing for each patient.
Solution Approach 2:
The inflatable structure serves multiple functions: it acts as a fluid reservoir, a positioning mechanism, and an expansion tool for accessing the drainage pathway. This multi-functionality reduces the need for separate components and simplifies manufacturing compared to systems that require dedicated elements for each function.
4Measurement precision
If the dispensing structure is located within the frontal sinus drainage pathway, then drug delivery precision is improved, but risk of complications and device complexity increase
Solution Approach 1:
The device incorporates mechanisms to monitor and control the dispensing process, allowing real-time feedback on fluid release rates and positioning. This feedback system enables adjustment of the dispensing parameters to maintain precision while preventing complications such as over-delivery or misdirection of the drug-containing fluid.
Solution Approach 2:
The anchoring structure is designed with features that provide beforehand cushioning and stabilization within the frontal sinus cavity. By securing the anchoring structure firmly in place before activating the dispensing function, the system reduces the risk of displacement and associated complications while maintaining precise delivery positioning.
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
The implant effectively delivers pharmaceutical agents directly into the frontal sinus drainage pathway, reducing scarring and enhancing drug delivery efficiency by maintaining the implant's position and ensuring prolonged release of the drug, adaptable to individual anatomical variations.
Implementation Method 1
The inflatable structure can be expanded by directing the fluid to an interior portion of the inflatable structure
Implementation Method 2
The dispensing structure can be, for example, a plurality of holes disposed within an outer surface of the inflatable structure and/or disposed within an outer surface of a tube connected to the fluid reservoir
Data Source
AI summary
Described herein are methods and devices for delivering a drug to the frontal sinus system. An inflatable implant is positioned within the frontal sinus system using an anchoring means secured within the frontal sinus cavity. A drug-containing fluid is released directly into the frontal sinus drainage system.