Dural defect is a common problem in neurosurgery, and the emergence of expanded polytetrafluoroethylene material provides an effective solution for rehabilitation artificial blood vessels, heart patches, other fields. However, studies on repair dura have reported occurrence adverse events cerebrospinal fluid leakage. Therefore, task improving materials cannot be delayed. In this study, new comp...

An implantable system is described which continuously delivered an aqueous solution to the external surface of six rabbit eyes for 6 weeks. A polytetrafluoroethylene tube was implanted in the superior conjunctival fornix 4 weeks prior to the implantation of the Infusaid pump. The pump provides a fluid source which is easily refilled and requires no batteries or external power source.

A method for the application of carbenes as reactive intermediates for surface modification of polymeric substrates has been developed; the efficacy of the process has been demonstrated by irreversible dyeing of polystyrene, polythene, nylon, silica, and controlled pore glass, and to a limited extent, polytetrafluoroethylene.

Abbreviations: ACD 5 absolute claudication distance; CI 5 confidence interval; INR 5 international normalized ratio; LMWH 5 low-molecular-weight heparin; MI 5 myocardial infarction; NASCET 5 North American Symptomatic Carotid Endarterectomy Trial; PGE1 5 prostaglandin E1; PGI2 5 prostaglandin I2; PTFE 5 polytetrafluoroethylene; rtPA 5 recombinant tissue plasminogen activator; tPA 5 tissue plasm...