Experimental Drainage Device to Reduce Lymphoedema in a Rat Model

Area of Science:

• Biomedical Engineering
• Regenerative Medicine
• Vascular Surgery

Background:

• Lymphoedema is a chronic, incurable condition significantly impacting quality of life.
• Current treatments lack innovation for restoring continuous lymph flow.
• There is a critical need for novel approaches to manage lymphoedema.

Purpose of the Study:

• To evaluate the efficacy of a subcutaneously implanted draining device in reducing lymphoedema volume.
• To test the potential of restoring continuous lymph flow in affected tissues.
• To investigate an innovative approach for managing chronic lymphoedema.

Main Methods:

• A rat hindlimb lymphoedema model was established via lymph node removal and irradiation.
• Limb volume, skin water content, and lymphatic drainage were monitored.
• A subcutaneous draining device with a miniaturized pump was implanted in affected limbs.

Main Results:

• The implanted device significantly reduced excess limb volume by 51% compared to pre-implant levels.
• Lymphofluoroscopy confirmed impaired lymphatic drainage post-surgery and irradiation.
• Treated limbs showed significant reductions in volume and skin water content.

Conclusions:

• A novel subcutaneous implanted device effectively reduced lymphoedema volume in a rat model.
• Restoring continuous fluid drainage is a viable strategy for managing lymphoedema.
• This study paves the way for developing an artificial lymphatic vessel.