Sawan M, Duval F, Li J S, Hassouna M, Elhilali M M
Department of Electrical Engineering, Ecole Polytechnique de Montréal, Québec, Canada.
Biomed Instrum Technol. 1993 Mar-Apr;27(2):143-9.
A new urinary-tract stimulator that is intended to restore normal bladder function to patients who have spinal-cord injuries is described. The system is composed of two principal parts. The first, which is external, consists of a hand-held device based on an inductive-coupling technique. This controller incorporates all the circuitry necessary to transmit data transdermally. The second, a fully programmable implantable device, includes a complementary metal oxide semiconductor gate-array integrated circuit controlling eight monopolar (or four bipolar) stimulation channels. To protect the tissues and the device, three different biocompatible polymers encapsulate the implant. In the experimental phase, the authors investigated the effect of early electrical stimulation of the bladder during the spinal-shock phase in paraplegic dogs. In addition, using the stimulator, they localized the parameters of stimulation that give the best results in terms of effective bladder pressure and voiding a high volume of urine.
本文描述了一种新型尿路刺激器，旨在恢复脊髓损伤患者的正常膀胱功能。该系统由两个主要部分组成。第一部分是外部设备，由基于感应耦合技术的手持装置构成。该控制器包含经皮传输数据所需的所有电路。第二部分是完全可编程的植入式设备，包括一个互补金属氧化物半导体门阵列集成电路，控制八个单极（或四个双极）刺激通道。为保护组织和设备，三种不同的生物相容性聚合物包裹植入物。在实验阶段，作者研究了截瘫犬脊髓休克期早期膀胱电刺激的效果。此外，他们使用该刺激器确定了在有效膀胱压力和大量排尿方面能取得最佳效果的刺激参数。
