e-PTFE ventricular shunt catheters.
Neurosurgery
; 31(6): 1132-5; 1134, 1992 Dec.
Article
en En
| MEDLINE
| ID: mdl-1470327
The perfect polymer surface for implantation should resist the adhesion of bacteria while producing no reaction in surrounding tissues. Silicone elastomer is a common material used for medical implantation devices. This material is superior to most available for implantation because of its flexibility and low, but detectable, tissue reaction. We have evaluated a flexible, expanded polytetrafluoroethylene (e-PTFE) ventricular catheter for cerebrospinal fluid shunting and have found that although e-PTFE is safe for cerebral implantation, the porosity of the material allows tissue ingrowth that obstructs the lumen. Our limited clinical evaluation of 5-microns internodal distance e-PTFE revealed that this open-cell structure, allowing tissue ingrowth, apparently is a poor candidate to replace silicone elastomer in cerebrospinal fluid shunting devices. However, further investigation may provide a polymer superior to silicone elastomer to create a cerebrospinal fluid shunt.
Buscar en Google
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Politetrafluoroetileno
/
Elastómeros de Silicona
/
Derivación Ventriculoperitoneal
Límite:
Animals
/
Humans
/
Male
Idioma:
En
Revista:
Neurosurgery
Año:
1992
Tipo del documento:
Article
Pais de publicación:
Estados Unidos