Tuesday, October 5, 1993

Iontotherapeutic devices, reservoir electrode devices therefore, process and unit dose: 5250022

Synthetic Resins or Natural Rubbers -- Part of the Class 520 Series,Chien Yie W, Banga Ajay K

Inventor(s): Chien Yie W, Banga Ajay K

Issued: 10/5/1993

Abstract: Provided are reservoir electrodes for iontotherapeutic devices which have two chambers; the first chamber is electrically connected to the iontotherapeutic device and is designed to contain electrolytic solution and the second chamber has ionized pharmaceutical dissolved in electrolytic solution. The two chambers are separated by a permselective membrane. The first chamber has means to inhibit increase in ionic content caused by the operation of the iontotherapeutic device. Also provided are unit dose forms adapted for insertion into the reservoir electrodes. The dose unit forms are made of crosslinked polymer and contain ionizable pharmaceutical which is released for absorption during operation of the iontotherapeutic process. Also provided are novel iontotherapeutic devices and processes.

USPTO Webpage 5250022

Method for making porous glass optical fiber sensor: 5250095

Surgery,Sigel, Jr George, Shahriari Mahmoud, Zhou Quan

Inventor(s): Sigel, Jr George, Shahriari Mahmoud, Zhou Quan

Issued: 10/5/1993

Abstract: A porous glass optical fiber sensor, a method for its use, and a method for its manufacture. The sensor includes a glass optical fiber for conveying light, the fiber having a surface of interconnected and permeable chambers within the fiber, for optically sensing within the chambers. An indicator can be applied to the surface for sensing. The sensor is made by: first, drawing the fiber; second, heat treating the fiber to induce phase separation; and third, leaching a phase from the fiber. Thereafter, an indicator, such as a pH or moisture indicator, can be applied to the fiber for sensing. The sensor is used in conjunction with a light source, a light detector, and means for measuring change in the light caused by an agent within the porosity of the sensor.

USPTO Webpage 5250095