公开(公告)号：US5471979A

公开(公告)日：1995-12-05

申请号：US263953

申请日：1994-06-22

申请人： George Psaros ,  Sven-Gunnar Olsson

发明人： George Psaros ,  Sven-Gunnar Olsson

IPC分类号： A61M16/01 ,  A61M16/00 ,  A61M16/10 ,  A61M16/22 ,  A62B7/10 ,  A62B23/02

CPC分类号： A61M16/009 ,  A61M16/0093 ,  A61M16/104 ,  A61M16/1065 ,  A61M16/107 ,  A61M16/1055 ,  A61M16/22 ,  A61M2016/1035

摘要： A method and apparatus for the re-use of anesthetic gases which are not absorbed by a patient, in inhalation anesthesia make use of an adsorption filter during exhalation, the unused anesthetic gases being subsequently desorbed from the adsorption filter during inhalation, and being reintroduced into the respiration flow to the patient. The exhaled gas is supplied through an absorber for carbon dioxide before it is re-supplied to the patient. The apparatus includes a common line for the delivery and discharge of anesthesia and respiration gases to and from a patient. An adsorption filter for adsorption and desorption of anesthetic gases is arranged in this line. To prevent the carbon dioxide from the exhalation gas of the patient, which is adsorbed in the adsorption material, from being re-supplied to the patient in the next inhalation phase, the common line between the patient and the adsorption filter is at least partially divided into an inhalation branch and an exhalation branch, with an absorber for carbon dioxide disposed in the inhalation branch, sized to match the small amount of carbon dioxide left in the reintroduced gas.

摘要翻译： 用于重新使用麻醉气体的方法和装置，其在吸入麻醉中不被患者吸收，在呼气期间使用吸附过滤器，未使用的麻醉气体随后在吸入过程中从吸附过滤器中解吸，并被重新引入 呼吸流向患者。 在向患者重新供给之前，呼出的气体通过用于二氧化碳的吸收器供应。 该装置包括用于向患者和从患者输送和排出麻醉和呼吸气体的共同线路。 在这条线上布置了用于吸附和解吸麻醉气体的吸附过滤器。 为了防止吸附在吸附材料中的患者的呼出气体中的二氧化碳在下一个吸入阶段被再次供给到患者，患者和吸附过滤器之间的共同线至少部分分开 进入吸入分支和呼气分支，其中吸入分配器中设置有用于二氧化碳的吸收器，其尺寸适合于重新引入的气体中留下的少量二氧化碳。