Progress of biodegradable polymer application in cardiac occluders

Area of Science:

• Biomaterials Science
• Cardiovascular Medicine
• Medical Device Engineering

Background:

• Congenital heart defects, particularly cardiac septal defects, are common and often treated with surgery.
• Current occluder devices primarily use Nitinol, leading to complications like thrombosis and cardiac erosion.
• Biodegradable occluders are emerging as a safer alternative to metal-based devices.

Purpose of the Study:

• To review the progress of bioabsorbable cardiac occluders.
• To analyze the pros and cons of various biodegradable polymers for occluder fabrication.
• To discuss future research avenues for biodegradable occluder design.

Main Methods:

• Literature review of research on bioabsorbable cardiac occluders.
• Analysis of studies on biodegradable polymers used in occluder development.
• Synthesis of findings on animal and human trials of bioabsorbable occluders.

Main Results:

• Nitinol-based occluders have limitations, including hemolysis, thrombus formation, and cardiac erosion.
• Several bioabsorbable occluders for septal defects have been developed and tested.
• Different biodegradable polymers present unique advantages and disadvantages for occluder applications.

Conclusions:

• Biodegradable cardiac occluders represent a significant advancement over traditional metal devices.
• Further research into materials and structures is needed to optimize bioabsorbable occluder performance.
• The development of effective biodegradable occluders could improve patient outcomes for congenital heart disease.