Eddy current density for non-invasive treatment system for urinary incontinence using functional continuous magnetic stimulator (FCMS)

被引：1

作者：

Ishikawa, N ^{[1
]}

Suda, S ^{[1
]}

Sasaki, T ^{[1
]}

Hosaka, H ^{[1
]}

Yamanishi, T ^{[1
]}

Yasuda, K ^{[1
]}

Ito, H ^{[1
]}

机构：

[1] Nihon Kohden Corp, R&D Ctr, Shinjuku Ku, Tokyo 161, Japan

来源：

PROCEEDINGS OF THE 2ND INTERNATIONAL CONFERENCE ON BIOELECTROMAGNETISM | 1998年

关键词：

D O I：

10.1109/ICBEM.1998.666426

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 [生物医学工程];

摘要：

We have devised a non-invasive, painless treatment system composed of a Functional Continuous Magnetic Stimulator (FCMS) and a large saddle type coil for urinary incontinence, especially stress incontinence and urge incontinence. First, we assumed the current density to apply to the objective stimulation region by general electrical stimulation. As a result, the absolute current density \Je\ assumed by calculation was 12.7 mu A/mm(2). Second, we have developed a saddle type coil for the FCMS which can be used practically in most hospital and stimulate continuously for 15 minutes. The coil has a cooling function to maintain the coil temperature to use the coil efficiently safely between 20 degrees C -25 degrees C. The size of the saddle type coil is 21 cm long, 12 cm wide and 3 cm thick. The most suitable region for urinary incontinence is from the anus to perineum and the saddle type coil can fit on this region. In experiments with dogs, we confirmed that the urethral pressure increased when the circumference of the perineum received Continuous Magnetic Stimulation (CMS) with 720 mu s pulse width (180 mu s risetime), 10Hz frequency and about 500V capacitor charge voltage. This result suggest that magnetic stimulation is effective as a stress urinary incontinence and urge urinary incontinence therapy. The specifications of the FCMS are 2kW maximum electrical power consumption. 800V maximum stimulation intensity, 720 mu s pulse width (180 mu s risetime), 5-30Hz frequency. The frequency is selected to treat urge incontinence between 5 and 10Hz and to treat stress incontinence between 25 and 30Hz.

引用

页码：123 / 124

页数：2