Selective Recording of Urinary Bladder Fullness from the Extradural Sacral Roots^.

Area of Science:

• Neuroscience
• Biomedical Engineering
• Urology

Background:

• Effective bladder management is crucial for patients with spinal cord injuries.
• Current Sacral Anterior Root Stimulator technology lacks bladder fullness sensing capabilities.
• Existing devices cannot detect reflex voiding, limiting their functional efficacy.

Purpose of the Study:

• To develop a method for recording neural signals encoding bladder fullness.
• To address the limitations of current bladder control neuroprosthetics.
• To enable more sophisticated bladder management strategies post-spinal cord injury.

Main Methods:

• A novel technique using a multiple electrode cuff was designed.
• Neural signals (bladder afferents) were recorded from extradural sacral roots.
• Proof-of-concept experiments were conducted in an acute in-vivo sheep model.

Main Results:

• Demonstrated the feasibility of recording bladder afferent signals from sacral roots.
• Successfully utilized a multiple electrode cuff for neural signal acquisition.
• Provided initial in-vivo data supporting the proposed recording technique.

Conclusions:

• The developed technique shows promise for sensing bladder fullness via neural recording.
• This method could significantly enhance the functionality of bladder control neuroprosthetics.
• Further research is warranted to translate this technique into clinical applications for spinal cord injury patients.