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Microscopic studies in shunts for hydrocephalus
Child'S Brain
|January 1, 1981
Summary
Scanning electron microscopy revealed material defects in new hydrocephalus shunts and structural changes in aged or infected ones. This technique is valuable for diagnosing shunt issues and ensuring the quality of silicone rubber medical devices.
Area of Science:
- Biomaterials Science
- Medical Device Engineering
- Microscopy
Background:
- Valve-regulated systems are crucial for treating hydrocephalus.
- Silicone rubber shunts are commonly used but can fail.
- Understanding shunt material integrity is vital for patient outcomes.
Purpose of the Study:
- To investigate the surface characteristics of silicone rubber shunts used for hydrocephalus treatment.
- To evaluate the impact of implantation duration and cerebrospinal fluid infection on shunt material.
- To assess the utility of scanning electron microscopy (SEM) in analyzing these medical devices.
Main Methods:
- Unused and explanted valve-regulated shunt systems were examined.
- Systems included new shunts, aged shunts (1-8 years), and those removed due to cerebrospinal fluid infection.
- Scanning electron microscopy was employed for high-resolution surface analysis.
Main Results:
- Defects such as holes and protrusions were observed in new shunt systems.
- Significant structural alterations were found in aged shunts and those from infected cases.
- Biological materials including fibrin, red blood cells, and bacteria adhered to catheter tubing walls.
Conclusions:
- SEM is a valuable tool for identifying material defects in silicone rubber prostheses.
- SEM can reveal structural changes associated with shunt aging and infection.
- SEM can aid in the research, diagnosis, and quality control of medical silicone devices.