Neural Probe Agent Delivery via Dissolvable Structures
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Solution Overview
Problem
Existing neural probes have thick profiles that can cause damage to brain tissue and trigger a foreign body response, leading to encapsulation and edema, necessitating improved designs for agent delivery and reduced tissue reaction.
Innovation Solution
Development of neural probe devices with agent delivery components such as dissolvable agent delivery structures, agent elution coatings, and drug delivery lumens that allow for the controlled release of treatment agents like cannabinoids or nitric oxide to minimize tissue reaction and reduce inflammation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If neural probes with thick profiles are used, then structural strength and durability are improved, but tissue damage and foreign body response increase
Solution Approach 1:
The patent employs ultra-thin neural probe designs with thicknesses of 1-10 micrometers, utilizing flexible membrane structures that maintain structural integrity while minimizing mechanical trauma to brain tissue. The thin film construction reduces the foreign body response while preserving the probe's functional capabilities through advanced material selection and structural optimization.
Solution Approach 2:
The patent utilizes composite material structures combining multiple layers including flexible substrates, conductive traces, and biocompatible coatings. These composite constructions provide the necessary mechanical strength and electrical functionality while maintaining a thin profile that reduces tissue damage and improves biocompatibility through carefully engineered material properties.
2Stability of the object's composition
If neural probes with thick profiles are used, then structural stability is improved, but foreign body response and encapsulation increase
Solution Approach 1:
The patent employs ultra-thin neural probe designs with thicknesses of 1-10 micrometers, utilizing flexible membrane structures that maintain structural integrity while minimizing mechanical trauma to brain tissue. The thin film construction reduces the foreign body response while preserving the probe's functional capabilities through advanced material selection and structural optimization.
Solution Approach 2:
The patent changes critical dimensional parameters by reducing probe thickness to 1-10 micrometers and controlling the thickness of agent delivery coatings to sub-micrometer ranges. These parameter changes fundamentally alter the probe-tissue interaction, reducing the foreign body response while maintaining structural stability through precise control of mechanical and physical properties.
3Reliability
If agent delivery structures are added to neural probes, then treatment efficacy is improved, but device complexity increases
Solution Approach 1:
The patent merges the agent delivery function directly into the probe structure by integrating drug reservoirs, delivery channels, and release mechanisms with the neural probe body. This consolidation eliminates the need for separate delivery devices, reducing overall system complexity while maintaining reliable treatment efficacy through synchronized electrical stimulation and pharmacological delivery.
Solution Approach 2:
The patent creates multi-functional neural probes that simultaneously perform electrical recording, electrical stimulation, and pharmacological agent delivery through a single integrated device. This universal design reduces the number of separate devices needed, simplifies the overall treatment system, while maintaining all therapeutic functions through carefully integrated multi-functional components.
4Duration of action of moving object
If dissolvable agent delivery structures are used, then controlled agent release is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent changes the physical and chemical parameters of the agent delivery coating by using dissolvable materials with controlled solubility rates. By adjusting coating composition, thickness, and cross-linking density, the patent achieves programmable release durations while managing manufacturing precision through well-established coating techniques and quality control protocols.
Solution Approach 2:
The patent employs porous or semi-permeable coating structures that allow controlled diffusion of therapeutic agents from the probe surface. The porosity and permeability parameters are engineered to achieve desired release kinetics, with manufacturing precision managed through standardized fabrication processes that produce consistent pore structures and material properties.
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 solution enables reduced tissue damage, minimized foreign body response, and effective delivery of treatment agents to the brain, potentially reducing seizure activity and improving the longevity and efficacy of neural probe devices.
Implementation Method 1
a dissolvable agent delivery structure disposed over at least a portion of the electrode body
Implementation Method 2
a drug delivery component comprising an agent elution coating disposed on the electrode body
Data Source
AI summary
Provided herein are a variety of neural probe devices that include an agent delivery feature via an agent coating or an agent delivery mechanism of some kind. The probe devices can include depth or cortical probes or electrodes. The agent delivery mechanisms can include, for example, a dissolvable agent delivery structure, an agent delivery lumen, a magnetically deployable cover, an iontophoretic delivery mechanism, an agent delivery cavity defined in the neural probe, or an agent reservoir with an actuable gate.