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Graft Dissection/毛囊分离

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One of the most important aspects of FUT Hair Transplant surgery is stereo-microscopic dissection. This allows follicular units to be removed from the donor strip without being broken up or damaged. During the dissection, it is critical that the whole follicular unit is kept intact as this will maximize its growth. Intact follicular units will also give the most fullness to the hair restoration, as they contain the full, natural complement of 1-4 hairs.

立体显微镜毛囊分离是FUT植发技术中很重要的一个环节。在这个环节中,毛囊会被尽可能没有损伤的从切下的皮瓣中分离出来。 分离时,每一个毛囊都需要完整地取出,这是植发存活率的重要保障。每个完整的毛囊体包含了1-4根头发。移植毛囊的完整性决定了头发恢复的程度和最终的植发效果。

毛囊分离

The average donor strip (above left) is approximately 1cm wide and of variable length, depending upon the number of follicular units that are needed for the hair restoration. In the average person’s scalp, there are approximately 90-100 follicular units per square cm of donor tissue, so a 2,000 graft hair transplant session would require a 1cm wide strip that is slightly over 20 cm in length.

一般从头皮切下的皮瓣 (参考左图)大约1厘米宽,长度由所需毛囊数量决定。正常人的头皮瓣上,每平方厘米可以提供90-100个毛囊。因此一个2000毛囊的植发手术需要1厘米宽,大概20多里面长的皮瓣。

The series of stereo-microscopes (above right) needed for the follicular unit dissection is located in the patient’s surgical room, so that graft dissection can occur simultaneously with other steps of the hair restoration and so that the hair transplantation can proceed seamlessly. Our highly-trained staff has years of experience assisting Dr. Bernstein in his pioneering Follicular Unit Transplantation procedure and you will not find a better team in the field of hair restoration. Such care is necessary to maximize graft survival by minimizing the risk of transection of follicles or mishandling.

毛囊分离的设备一般置放于手术室内,方便毛囊提取,分离,植入。所有步骤可以同时进行,从而缩短手术时间,提高手术效率。我们的专业人员有多年协同Berstein博士的FUT手术经验, 在植发领域你将很难找到和我们比肩的团队。我们的手术流程可以最小化移植毛囊的损害,减少手术失误的几率,最大化毛囊的存活率。

毛囊分离

The first step in stereo-microscopic dissection is a process called “slivering” (above left). In slivering, the dissector divides the long donor strip into smaller sections of approximately 2-2.5mm in width. The sectioning is accomplished by passing a scalpel blade through the spaces around follicular units, rather than merely cutting directly through the block of tissue. This technique generates smaller pieces of hair bearing tissue without breaking up follicular units and without transecting (cutting) hair follicles.

The dissector then isolates the individual follicular units from these small sections by trimming away excess dermis and fat. (Above right).

立体显微镜毛囊分离的第一步叫做”镀银”. 在镀银过程中,进行切分的技术人员会把皮瓣分为几部分,每部分大概2-2.5厘米宽。切分时技术人员会在显微镜下,用手术刀把皮瓣精确的从毛囊之间切开。这种方式会把毛囊切分为众多小的完整毛囊载体,而不会破坏或切开毛囊本身。

接下来切分的技术人员会把多余的真皮和脂肪从这些小的载体上剔除,提取出单个毛囊。

毛囊分离仪器

The photo (above left) shows 1-, 2-, 3-, and 4-hair follicular units. Hundreds of these individual units are sorted according to the numbers of hairs they contain.

They are then stored in HypoThermosol® (above right), an optimized hypothermic (low temperature) preservation medium. We use HypoThermosol because it contains macro-molecules that best mimic the intra-cellular fluids. When the grafts are chilled, this solution prevents small molecules, such as Na+, from entering the cells and causing damage. HypoThermosol® also contains two potent antioxidants, glutathione and a vitamin E analog. Together, they mitigate temperature-induced molecular cell stress that occurs during the chilling and re-warming of grafts. This results in significantly extended viability of the grafts while waiting to be placed back into the scalp.

如图所示为1-,2-,3-,4- 不同类型的毛囊。根据毛囊里头发的数量,毛囊会被分组。

提取出的毛囊会存放在HypoThermosol (储存液)中,这是一种低温的储存液。 我们使用HypoThermosol ,因为它能提供大分子存储环境,最接近真实的细胞间组织液。这种方法防止了小分子(譬如Na+)在毛囊冷却后进入并损害细胞组织。 不仅如此,HypoThermosol 中提供了两种有力的抗氧化剂,谷胱甘肽和维他命E. 这些成分有效降低了温度变化(毛囊冷却和预热)对细胞造成的影响。这些技术大大提高了对毛囊在被提取后,植入前的保护。

毛囊分离仪器

Once the recipient sites have been created, a portion of the grafts are removed from the refrigerated storage and placed into Petri-dishes that sit on a wall-mounted placing stand at the head of the operating table (above left). The grafts are bathed in a HypoThermosol® solution (above right) at a constant temperature while waiting to be placed back into the patient’s scalp.

当植发区准备好后,一部分毛囊会被从冷却存储空间取出,并放入培养皿。培养皿一般固定在手术台旁边的墙上。 植入手术前,毛囊将被存放于常温的HypoThermosol存储液中。

注:本文由好头发翻译小组翻译

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