Computerized transcutaneous control of a multichannel implantable urinary prosthesis.

Area of Science:

• Biomedical Engineering
• Neuroscience
• Urology

Background:

• Urinary incontinence and bladder dysfunction significantly impact quality of life.
• Current treatments for severe bladder dysfunction have limitations.
• Restoring bladder function through electrical stimulation is a promising therapeutic avenue.

Purpose of the Study:

• To describe a novel personal computer interface for a multichannel implantable urinary prosthesis.
• To evaluate the feasibility and effects of early bladder electrostimulation during spinal shock in a canine model.

Main Methods:

• Development of an implantable prosthesis with a 4-micron CMOS gate array chip and eight monopolar channels.
• Design of an external controller with versatile software, a microcomputer interface, and radiofrequency coupling for power and data transmission.
• Surgical implantation in dogs to enable chronic electrostimulation of sacral roots during the spinal shock phase.

Main Results:

• Successful fabrication and encapsulation of the implantable device and electrodes.
• Demonstration of power, data, and clock signal transmission via radiofrequency coupling.
• Positive outcomes observed from early electrical stimulation of the bladder during spinal shock in dogs.

Conclusions:

• The developed multichannel implantable urinary prosthesis and its PC interface are functional.
• Early electrostimulation of sacral roots during spinal shock is a viable strategy for bladder function restoration.
• Further research is warranted to optimize the system and clinical application.