The invention relates to a medical treatment apparatus comprising a tube set 20, a peristaltic pump 6 for conveying fluid, and a monitoring apparatus 15 for monitoring the occlusion of the positive displacement elements 12 of the peristaltic pump. In addition, the invention relates to a tube set 20 for a medical treatment apparatus, and to a method for monitoring the occlusion of the occlusion elements of a peristaltic pump for conveying a fluid for a medical treatment apparatus. The invention is based on the fact that the occlusion of the positive displacement elements 12 of the peristaltic pump 6 is monitored in order to monitor the fluid flow in the hose line 5. For this purpose, the electrical resistance or a variable which correlates with the electrical resistance is measured between a first and a second electrode 16A, 16B, the first electrode 16A being arranged on the hose line 5 upstream of the occlusion elements 12 of the peristaltic pump 6 and the second electrode 16B being arranged on the hose line downstream of the occlusion elements such that an electrical contact is produced between the first and second electrode 16A, 16B and the fluid flowing in the hose line 5. The electrodes 16A, 16B are preferably integral component parts of a connecting piece 10, by means of which the hose segment 5A to be inserted into the peristaltic pump 6 is fixed in the form of a loop.本發明關於醫學治療裝置,其包含軟管組(20)、用於輸送流體之蠕動幫浦(6)、以及用於監視該蠕動幫浦之正排量元件(12)的閉鎖之監視裝置(15)。此外,本發明關於用於醫學治療裝置之軟管組(20),以及關於用於監視輸送醫學治療裝置用之流體的蠕動幫浦之閉鎖元件的閉鎖之方法。本發明係以監視該蠕動幫浦(6)之正排量元件(12)的閉鎖以監視軟管線(5)中之流體流的事實為基礎。為此目的,測量介於第一與第二電極(16A、16B)之間的電阻或與該電阻相關的變數,該第一電極(16A)係配置在該蠕動幫浦(6)之閉鎖元件(12)上游的軟管線(5)上,以及該第二電極(16B)係配置在該閉鎖元件下游的軟管線上,以使該第一和第二電極(16A、16B)與在該軟管線(5)中流動的流體之間產生電接觸。電極(16A、16B)較佳為連接件(10)之整體組件部件,利用彼將待插入該蠕動幫浦(6)的軟管段(5A)以環路形式固定。5‧‧‧動脈血液管線5A‧‧‧軟管段6‧‧‧血液幫浦10‧‧‧連接件10A‧‧‧第一通道10B‧‧‧第二通道12‧‧‧透析液幫浦13‧‧‧轉子16D、16E‧‧‧電連接線16F、16G、16H、16I‧‧‧連接觸點27‧‧‧殼體28‧‧‧接收單元29‧‧‧幫浦床31‧‧‧凹部R‧‧‧徑向
