Poswal Arvind
Dr. A's Clinic Pvt. Ltd., Chittaranjan Park, New Delhi, India.
Indian J Dermatol. 2013 May;58(3):240. doi: 10.4103/0019-5154.110845.
In traditional follicular unit extraction technique, 0.8-1.4 mm punch is used to cut the dermis to the level of attachment of erector pili muscle, so that the intact follicular unit grafts can be extracted. However, the larger extraction sites and higher hair root transection rates are some difficulties encountered while using the punch to extract body hair grafts. To overcome these difficulties, expanding needle concept has been devised. It approaches the extraction process by customizing the extraction wound to the architecture of the follicular unit and by performing most of the dissection of the dermal attachments to the donor follicular unit under direct magnified vision.
在传统的毛囊单位提取技术中，使用0.8 - 1.4毫米的打孔器将真皮切割至竖毛肌附着水平，以便能够提取完整的毛囊单位移植物。然而，在使用打孔器提取体毛发移植物时，较大的提取部位和较高的毛根横断率是一些遇到的困难。为了克服这些困难，已经设计出了扩张针概念。它通过根据毛囊单位的结构定制提取伤口，并在直接放大视野下对供体毛囊单位的真皮附着物进行大部分解剖来实现提取过程。
