Adjustable Electrode Lead Structure for Precise Brain Stimulation
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Solution Overview
Problem
Conventional leads for deep brain stimulation lack the ability to accurately adjust the position and contact point of electrodes, making it difficult to match the lead to the specific target in each patient, thereby affecting the therapeutic effectiveness.
Innovation Solution
A lead structure with adjustable electrode contact points and positions, featuring a lead case with movable conductive and support plates, and a plate key system for external control, allowing precise adjustment of electrode placement and stimulation areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional leads with fixed electrode contact points are used, then the lead structure is simple and easy to manufacture, but the ability to accurately adjust electrode position and contact points is poor
Solution Approach 1:
The patent applies the dynamics principle by making the electrode contact points adjustable through a mechanical adjustment mechanism. The lead case includes a first through-hole and second through-hole with a movable contact point that can be repositioned along the lead wire. This allows the electrode contact points to change position dynamically to match different target locations in the brain, thereby improving positioning accuracy while maintaining a relatively simple overall structure.
Solution Approach 2:
The patent applies segmentation by dividing the lead structure into distinct functional components: the lead wire with electrode contact points, the lead case with adjustment mechanisms, and the insulating layer. The contact point is segmented from the main lead body, allowing independent adjustment of the contact position without affecting the entire lead structure. This segmentation enables precise electrode positioning while keeping the manufacturing process manageable.
2Adaptability or versatility
If conventional leads with fixed contact points are used, then the device is easy to operate, but it cannot adapt to different target positions and sizes in each patient
Solution Approach 1:
The patent implements adaptability through dynamic adjustment of the contact point position. The contact point can be moved along the lead wire to different locations, allowing the same lead to be adapted to various target positions in different patients' brains. The adjustment mechanism includes a movable contact point that can be repositioned using the lead case structure, enabling versatility without requiring multiple different lead designs.
Solution Approach 2:
The patent applies universality by designing a single lead structure that can serve multiple patients with different target positions. The adjustable contact point mechanism allows one lead design to fulfill multiple functions by adapting to different anatomical locations. The lead case with its adjustment mechanism provides a universal solution that works across different patient cases, eliminating the need for patient-specific lead customizations.
3Reliability
If sufficient micro-electrical stimulation is not made to the correct target, then the lead structure remains simple, but the therapeutic effect is difficult to expect
Solution Approach 1:
The patent improves therapeutic reliability by enabling dynamic adjustment of the electrode contact points to precisely match the correct target location in each patient's brain. The movable contact point mechanism allows post-implantation adjustment to ensure accurate stimulation delivery. This dynamic positioning capability ensures that sufficient micro-electrical stimulation is made to the correct target, thereby improving therapeutic effectiveness.
Solution Approach 2:
The patent implements feedback through the adjustment mechanism that allows verification and refinement of electrode contact precision. The lead case structure enables the contact point to be repositioned based on feedback from imaging and neurological assessment. This feedback loop ensures that the electrode contact precision is sufficient to achieve the desired therapeutic effect, allowing for iterative optimization of the stimulation parameters and contact position.
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
Enables accurate and customizable electrical stimulation by allowing external adjustment of electrode positions and contact points, improving therapeutic outcomes for conditions like Parkinson's disease and obsessive-compulsive disorder.
Implementation Method 1
a conductive plate configured to apply electrical stimulation to body organs... and a support plate configured to provide electrical stimulation from the first electrode to the conductive plate by contacting the first electrode
Data Source
AI summary
A lead structure according to an embodiment of the present disclosure may include: includes a lead having an electrode wire having one end provided as an insertion portion to be inserted into a body and the other end provided as an interface portion for connection with an external device, a first electrode in the insertion portion to transmit electrical stimulation to body organs, a second electrode on the interface portion to receive electrical stimulation applied from outside, and a signal line configured to interconnect the first electrode and the second electrode and transmit the electrical stimulation received by the second electrode to the first electrode; and a lead case configured to surround the lead, and a conductive plate configured to apply electrical stimulation to body organs and a support plate configured to provide electrical stimulation from the first electrode to the conductive plate by contacting the first electrode.