Nanofiber Tumor Access Structure for Bi-Directional Cell Sampling
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Solution Overview
Problem
Existing methods for treating tumors lack efficient bi-directional access for delivering therapy, monitoring, and customizing treatment, as well as facilitating the migration and sampling of cells and bioactive entities.
Innovation Solution
An apparatus comprising a catheter with inlet openings, a nanofiber structure, and a reservoir device allows for bi-directional access to tumors, guiding cells and bioactive entities between a tumor site and a remote location, enabling delivery, sampling, and monitoring through a nanofiber structure that mimics natural migration pathways.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a single-directional approach is used for tumor treatment, then surgical accessibility is improved, but the ability to deliver therapy and monitor treatment is limited
Solution Approach 1:
The device is divided into two separate scaffolds: a first scaffold implanted at the tumor site and a second scaffold implanted at a remote accessible location. This segmentation enables bi-directional access while maintaining ease of surgical operation at each site independently.
Solution Approach 2:
The nanofiber film acts as an intermediary structure that bridges the tumor site and the remote location. It provides a physical pathway for cell migration and a structural connection that enables bidirectional interaction between the two implant sites.
2Productivity
If tumor cells are directed to migrate away from the tumor, then remote elimination is improved, but the ability to deliver therapy back to the tumor is reduced
Solution Approach 1:
The nanofiber film serves multiple functions: it guides tumor cell migration away from the tumor, provides a pathway for delivering therapeutic agents back to the tumor site, and enables monitoring capabilities. This multi-functionality resolves the contradiction between elimination efficiency and therapy delivery versatility.
Solution Approach 2:
The system operates in multiple dimensions: unidirectional cell migration from tumor to remote site, bidirectional drug delivery through the nanofiber matrix, and multi-point monitoring. This dimensional expansion allows simultaneous achievement of elimination efficiency and therapy versatility.
3Ease of operation
If a nanofiber film structure is used to guide cell migration, then migration guidance is improved, but device complexity increases
Solution Approach 1:
The use of a thin nanofiber film provides effective cell migration guidance while minimizing device complexity. The film's thin nature and flexibility allow it to be integrated into the scaffold structure without adding significant complexity, yet it maintains its ability to guide cell migration through its nanofiber architecture.
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
Facilitates bi-directional access to tumors for therapy delivery, monitoring, and sampling, enhancing treatment efficacy by allowing for the migration and extraction of cells and bioactive entities, and enabling real-time monitoring of tumor progression.
Implementation Method 1
guiding cells and bioactive entities between a tumor site and a remote location, enabling delivery, sampling, and monitoring through a nanofiber structure that mimics natural migration pathways
Data Source
AI summary
An apparatus for guiding the migration of cancer and other cells includes a reservoir device, a cover, a tube, a nanofiber structure, and a lock device. The reservoir device defines a reservoir having an open top. The cover is configured for removable installation over the open top of the reservoir. The tube has a proximal end portion reaching into the reservoir. The nanofiber structure communicates an inlet port in the tube with the reservoir. The lock device interlocks the tube with the reservoir device, and also interlocks the nanofiber structure with the reservoir device.