自制同径不同针型组织活检细针取材效果的实验研究

用自制同径21G 24种不同针型活检细针,对离体猪肝尸体肝脏以常规穿刺法和提插穿刺法穿刺取材作定量研究,并作组织切片染色,显微镜下观察肝组织结构。优选取材量多及镜下肝组织结构完整的细针,穿刺人体手术肿瘤标本与大体标本同样切片染色,对比其病理学诊断的符合率。结果表明,同径不同针型各针取材量及两种穿刺方法取材量均有显著差异;但用同一针型同一穿刺方法对猪肝及尸体肝的取材量无明显差异。用优选针型穿刺肿瘤标本与大体标本的病理学诊断符合率为100%。其中,三叉、双斜面、双叉等针型,不仅取材量最多,肝组织镜下结构最完整,且针锋利,容易制造,将其制成新型连动式活检针,用于临床经皮穿刺活检。有推广价值。

Experimental Research on the Practical Application for Extraction Effect of Different Kinds of Self-Made Fine Biopsy Needles Pocessed Same Diameter

24 different patterns self-made biopsy fine needles with same diameter as 21G had been used to extract tissues from pig liver specimens and outopsie human by routine puncture method and insertion puncture method.The extracted tissues were undestaken for quantitative measurement and microcopic tissue stainin estigation.The fine needle selected pocissing the obility of extract more in sirtact liver tissues was ussd to puncture human tumor specimen contract and human liver specimen.The ex taceted trssries were cut into slices stalineg evenly couelated with patholoyg coincidence rates.The result showed that the extraction by different patterns of needles with two puncture methods were much more in discrepency but no obvious diversity on quantity of pig livers or autopsy livers by the same pattern of needle and same puncture method in comparing with other patterns of needles.The coincidence patho- logic diagnostic rate of tumor specimcn and human liver specimen punctured by fine needle was 100%. Particularly,the tridernt double obligue plare bident needle not only can extract more qunntity with liver tissues,but also easy for mamagement.It's valuable for clinical applicalion.