Wave-based patient line blockage detection

• Main Authors: CRAWFORD WILLIAM SCOTT, OHLINE MATTHEW ROBERT
• Format: Patent
• Language: Chinese; English
• Published: 21.12.2018
• Subjects: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROMTHE BODY; HUMAN NECESSITIES; HYGIENE; MEDICAL OR VETERINARY SCIENCE

A dialysis machine (e.g., a peritoneal dialysis (PD) machine) can include a pressure sensor (151A, 151B) mounted at a proximal end of a patient line (130) that provides PD solution to a patient through a catheter. During treatment, an occlusion (1008) can occur at different locations in the patient line and/or the catheter. Elastic waves may be generated at a pump that introduces (e.g., for fill cycles) or withdraws (e.g., for drain cycles) the solution into/out of the patient line. For example, when the solution is introduced or withdrawn suddenly, elastic waves travel distally down the patient line until they encounter the occlusion, and are then reflected back (e.g., toward the pressure sensor). 种透析机(例如，腹膜透析(PD)机)可包括安装于患者管线(130)的近端的压力传感器(151A、151B)，该患者管线通过导管向患者提供PD溶液。在治疗过程中，闭塞(1008)可出现在患者管线和/或导管中的不同位置处。可在将溶液引入(例如，用于填充循环)到患者管线中或从患者管线中取回(例如，用于排放循环)的泵处产生弹性波。例如，当突然引入或取回该溶液时，弹性波沿患者管线向远侧行进，直到它们遇到闭塞，并且随后被(例如，朝向压力传感器)反射回来为止。