Use of an Implanted Sacral Nerve Stimulator to Restore Urine Voiding in Chronically Paraplegic Dogs

Journal of Veterinary Internal Medicine

N. Granger¹  D. Chew³  P. Fairhurst²  J.W. Fawcett³  S.P. Lacour⁵  M. Craggs⁴  C.A. Mosse⁴  N. Donaldson⁴ 

[1] School of Veterinary Sciences, University of Bristol, Bristol, UK;Finetech Medical, Welwyn Garden City, UK;Brain Repair Centre, University of Cambridge, Cambridge, UK;University College London, London, UK;Ecole Polytechnique Federale de Lausanne, Lausanne, Switzerland

关键词: Bladder;    Incontinence;    Prosthesis;    Spinal cord injury;   

DOI  :  10.1111/jvim.12011

来源: Wiley

【 摘 要 】

Abstract

Background

Loss of urinary control after spinal cord injury increases risk of urinary tract disease and is problematical for owners of affected dogs.

Objectives

To design, implant, and test a sacral nerve stimulating device for controlling urine voiding in paraplegic dogs.

Animals

Nine pet dogs with severe thoracolumbar spinal cord injury causing paraplegia, loss of hindquarter sensation, and incontinence for more than 3 months. The procedure was offered prospectively to owners of suitable candidates after the irreversibility of the incontinence had been ascertained.

Methods

Open label clinical study. Surgically implantable electrode “books” were designed for insertion and retention of mixed sacral nerves. Sacral nerves were accessed via laminectomy and stimulated to test their ability to elicit detrusor contraction and then inserted into the electrode book, which was attached to a subcutaneously implanted, externally activated receiver.

Results

In 8/9 dogs, S2 nerves elicited the largest increases in intravesicular pressure with minimum stimulation and were placed in electrode books. Voiding efficiency was >90% in 8 of the 9 implanted dogs. No important detrimental effects of the procedure were observed.

Conclusions and Clinical Importance

This sacral nerve stimulating implant is a simple and apparently effective neuroprosthetic device that restores urine voiding in paraplegic dogs.

【 授权许可】

Unknown   
Copyright © 2012 by the American College of Veterinary Internal Medicine