此处的创伤小是相对于有创性检查而言的，因此建议翻译成：无创或微创，见上。
容易推广应用的另一种说法是：容易被广泛采用，因此可以翻译成：can be widely used. “特别是基层单位”这个在英语中估计没有对应词语，很有中国特色“等级观念”，其实抛开国人的“等级观念”，可以将基层单位翻译成：hospitals with less advanced facility。供参考。不建议翻译成：grass-roots (农牧地区、一般人民)，这与本意有较大差别。
以上供参考。

--cause minimal adverse effect to the patient (or cuase minimal injury to the patient)

-- easy to be commercialized for clinical use, especially at grass-roots institutions

http://www.google.com/search?hl=en&lr=&q="grassroots institu...

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Note added at 13 hrs (2006-05-20 11:09:30 GMT)
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microinvasive is not used this way (cancer/tumor). noninvasive means no injury. Both miss the point.

This procedure introduces various advantages compared with the transsphenoidal microsurgical approach such as a wider vision of the surgical field, ***less traumatism of the nasal structures, greater facility in the treatment of possible recurrences, and reduced complications

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Note added at 18 hrs (2006-05-20 16:41:21 GMT)
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of its advantages—less traumatism. for the patient and lower treatment costs. One problem is to precisely characterize. the blood flow in a vascular network ...

In my opinion, the actual traumatism is less, not more, in the average case, than when the manipulative method is employed. Other things being equal, ...

with the advantage of a wider vision of the surgical field, less traumatism of the nasal structures, greater facility in the treatment of possible ...