Adhesive Hydrogel Composition for Electrode Pads

The invention changes the chemical composition parameters of the hydrogel by incorporating specific amino acid derivatives ( glycine, alanine, valine, leucine, isoleucine, serine, threonine, asparagine, glutamine, proline, hydroxyproline) at controlled concentrations (0.1-10 mmol/g dry weight) alongside cross-linking agents. This compositional parameter change creates a more stable adhesive matrix that maintains strength through repeated use cycles.

The invention creates a composite hydrogel material combining multiple components: base polymer, amino acid derivatives, cross-linking agents, and water. This composite structure provides both initial adhesive strength and durability through the synergistic interaction of components, particularly the amino acid derivatives that reinforce the polymer network against degradation during repeated attachment-detachment cycles.

The invention modifies the chemical composition of the hydrogel by incorporating specific amino acid derivatives and controlling cross-linking density, which changes the physical-chemical parameters at the hydrogel-skin interface. These parameter changes reduce irritation while maintaining electrode functionality.

The invention uses amino acid derivatives, which are naturally occurring and biocompatible substances, to convert the potentially harmful adhesive interaction into a beneficial one. These amino acids modify the hydrogel surface properties to reduce skin irritation and inflammation while preserving the necessary adhesive strength for electrode attachment.

The invention creates a hydrogel that performs self-maintenance through its inherent compositional stability. The amino acid derivatives and cross-linked structure enable the hydrogel to naturally resist adhesive degradation without requiring external rinsing or maintenance actions by the user, thus achieving self-service functionality.

The invention creates an electrode pad with extended service life through improved adhesive durability, reducing the frequency of replacement. The enhanced stability from amino acid incorporation allows the product to function through multiple use cycles without degradation, effectively extending the useful life of what would otherwise be a short-lived disposable product.