Pressure sensitive adhesive compositions for medical electrodes
Patent 4588762 Issued on May 13, 1986. Estimated Expiration Date: 
November 20, 2004. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
November 20, 2004. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesSoft conductive materials Pressure-sensitive adhesive compositions Electrically conductive, visco-elastic gel and its use in electrode Adhesive compositions Patent #: 4393080 InventorsAssigneeApplicationNo. 06/673552 filed on 11/20/1984US Classes:524/45, Carboxyalkyl or alkali metal salt thereof156/327, Synthetic resin containing156/328, With carbohydrate and/or protein or derivatives thereof252/500, ELECTRICALLY CONDUCTIVE OR EMISSIVE COMPOSITIONS252/510, With organic component252/511, Resin, rubber, or derivative thereof containing424/449, Transdermal or percutaneous428/355AC, Including addition polymer from alpha-beta unsaturated carboxylic acid (e.g., acrylic acid, methacrylic acid, etc.) or derivative thereof428/355EN, Including addition polymer from unsaturated monomer428/356, Including metal or compound thereof or natural rubber524/272, Solid polymer derived from at least one ethylenic compound containing a carboxylic acid or derivative524/434Heavy metal atom DNRMExaminersPrimary: Kight, JohnAssistant: Nutter, Nathan M. Attorney, Agent or FirmInternational ClassA61B 5/0408 (20060101)AbstractA heterogeneous, pressure-sensitive, electrically conductive adhesive for disposable biomedical electrodes. The adhesive consists of two phases: a viscoelastic polymeric adhesive phase and an electrically conductive aqueous phase containing a water receptive polymer, a humectant, and an electrolyte. Both phases are intimately interdispersed and the adhesive is applied as a relatively thin film on a supporting substrate. The adhesive is characterized in that it establishes a physical equilibrium with the ambient system so that varying concentrations of moisture in the atmosphere are accommodated and tolerated by the adhesive without loss of viscoelastic and adhesion capabilities and without impairment of electrical conductivity values even under conditions of both high and of low relative humidity. | |
