陈实功曰∶古之良医，有好生之德，以口吮脓，后世人渐嫌秽，每多重手强挤，致
患者野狼狈不堪，或因循听其自溃，脓毒不得外发，必致内攻，乃生烦躁，重如负石，
非用药筒拔提内蓄之脓，毒瓦斯终难外泄也。法预用径口一寸二三分新鲜嫩竹一段，长
七寸，一头留节，用刀划去外青，留内白一半，约浓分许，靠节钻一小孔，以杉木
条紧塞，将羌活、独活、紫苏、蕲艾、鲜菖蒲、白芷、甘草各五钱，连须葱二两，灌
入筒内，筒口用葱塞之，将筒横放锅内，以物压住，勿得浮起，用清水十大碗 筒，煮
数滚，约内药浓熟为度，候用。再用披针于疮顶上一寸内，品字放开三孔，深入浅
寸，约在筒圈内将药筒连汤用大磁钵盛贮，患者榻前，将筒药倒出，急用筒口乘热对
疮合上，以手捺紧，自然吸住，约待片时，药筒已温，拔去塞孔木条，其筒自脱，将
器倒出筒中物色，看其何样∶如有脓血相粘，鲜明红黄之色，亦有一二杯许，此是
活疮，治必终愈。如拔出物色，纯是败血，气秽紫黑稀水，而无脓意相粘者，其人气
血内败，肌肉不活，必是死疮，强治亦无功矣。此法家传，屡经有验，如阳疮易溃
易脓之证，不必用此，以伤气血，此法阴疮用之，要在十五日前后，坚硬不溃不脓
者，行之最当。此法的有回天之效，医家真不可缺也。（《正宗》）
陈实功说：古代的良医，怀有爱护生命的仁德，用口吮吸脓液。后世的人渐渐嫌弃这种作法污秽，往往多用手指强行挤压，导致患者处境狼狈不堪；或者因循守旧听任其自行溃破，致使脓毒不能向外发散，必然导致毒邪内攻，从而产生烦躁不安，身体沉重如背负巨石。如果不使用药筒拔法来提出体内蓄积的脓液，毒气终究难以向外排泄。
操作方法：预先准备一段直径一寸二三分的新鲜嫩竹，长度七寸，一头保留竹节。用刀削去外层青皮，保留内壁白色部分的一半，厚度约一分许。在靠近竹节处钻一个小孔，用杉木条紧紧塞住。将羌活、独活、紫苏、蕲艾、鲜菖蒲、白芷、甘草各五钱，连同带须葱二两，灌入竹筒内。筒口用葱段塞住，将竹筒横放在锅内，用物体压住，防止浮起。加入清水十大碗，煮至沸腾数次，直到筒内药物浓熟为止，备用。
使用时：再用披针在疮顶上一寸范围内，呈“品”字形刺开三个孔，深入浅层约一寸。大约在竹筒圈定的范围内，将药筒连同汤药一起用大磁钵盛装，放置在患者床前。将筒中药汁倒出，立即趁热将筒口对准疮口合上，用手按压紧实，自然吸附住。等待片刻，待药筒变温后，拔掉塞孔的木条，药筒便会自动脱落。将器具中的内容物倒出，观察其性状：如果有脓血相粘，呈现鲜明红黄的颜色，大约有一二杯左右，这是“活疮”，治疗必定最终痊愈。如果拔出的物质，纯粹是败血，气味腥秽，颜色紫黑且为稀水状，没有脓液相粘的迹象，这说明患者气血内部衰败，肌肉失去生机，必然是“死疮”，强行治疗也没有功效。
这种方法家传，屡经验证有效。如果是阳疮，容易溃破、容易化脓的证候，不必使用此法，以免损伤气血。此法适用于阴疮，要在发病十五日前后，疮面坚硬、不溃破、不化脓的情况下，施行最为恰当。此法确实有回天之力，医生实在不可缺少的技术。（出自《外科正宗》）
Chen Shigong stated: Ancient virtuous physicians possessed the virtue of cherishing life, using their mouths to suck out pus. Later generations gradually found this practice unclean, often resorting to forcibly squeezing with hands, leaving patients in a wretched state; or they would passively wait for spontaneous rupture, causing pus and toxins to fail to discharge outward, inevitably leading to internal attack by pathogens, resulting in restlessness and a sensation of heaviness as if carrying a heavy stone. Without employing the medicinal jar suction method to extract accumulated pus from within, toxic vapors would ultimately fail to dissipate externally.
The procedure is as follows: Prepare a segment of fresh tender bamboo with a diameter of one inch and two or three fen (approx. 3-4 cm), seven cun (approx. 23 cm) in length, retaining one node. Use a knife to scrape off the outer green skin, preserving half of the inner white layer, approximately one fen thick. Drill a small hole near the node and tightly plug it with a fir wood strip. Place Qianghuo (Notopterygii Rhizoma et Radix), Duhuo (Angelicae Pubescentis Radix), Zisu (Perillae Folium), Qi Ai (Artemisiae Argyi Folium), Xian Changpu (Acori Tatarinowii Rhizoma), Baizhi (Angelicae Dahuricae Radix), and Gancao (Glycyrrhizae Radix et Rhizoma), each five qian (approx. 15 g), along with two liang (approx. 60 g) of scallions with roots, into the bamboo tube. Plug the tube mouth with scallion segments. Place the tube horizontally in a pot, weigh it down to prevent floating, add ten large bowls of clear water, and boil until the liquid inside is thoroughly cooked and concentrated. Set aside for use.
For application: Using a lancet, puncture three holes in a triangular ("pin") pattern on the apex of the sore, within one cun, penetrating superficially to a depth of about one cun. Place the medicinal tube together with its broth in a large porcelain bowl near the patient's bed. Pour out the liquid from the tube, and immediately press the hot tube mouth firmly against the sore. Hold it tight with your hand so that it adheres naturally. After a short while, when the tube has cooled slightly, remove the wooden plug from the hole, and the tube will detach spontaneously. Empty the contents of the tube into a vessel and observe the nature of the discharge: If there is pus mixed with blood, exhibiting a bright red-yellow color, amounting to one or two cups, this indicates a "living sore" (viable tissue), which will surely heal with treatment. If the discharged material consists purely of necrotic blood, with a foul odor, purple-black color, and watery consistency without any viscous pus, it indicates internal failure of Qi and Blood and non-viable muscle tissue, signifying a "dead sore" (non-viable tissue). In such cases, forced treatment will be ineffective.
This method was passed down in my family and has proven effective repeatedly. For Yang sores (superficial, acute infections) that easily suppurate and rupture, this method should not be used, as it may damage Qi and Blood. This method is suitable for Yin sores (deep, chronic infections), specifically applied around fifteen days after onset when the lesion is hard, unruptured, and non-suppurating. This method indeed possesses the power to reverse critical conditions and is indispensable for physicians. (From *Waike Zhengzong*)