DEVELOPMENT OF A STRENGTH MEASUREMENT SYSTEM BASED ON PNEUMATIC EXPLOSION TESTING FOR INTESTINAL CONNECTIONS AFTER ANASTOMOSIS PROCEDURES

• Main Author: Lawrence, Christoph
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/85672
• Institution: Institut Teknologi Bandung

Intestinal anastomosis is a procedure used in surgery to connect two separate sections of the intestine that were previously disconnected as part of efforts to locate the root cause of a disease in the intestines, involving a surgical process. Several new methods of anastomosis treatment have been found in the effort to strengthen intestinal connections, but further research, particularly in vivo studies, is needed to measure the effectiveness of these various new methods, such as autologous fibrin glue (AFG), in enhancing the strength of the intestinal junction after anastomosis. The design of the measuring device begins with a study related to the testing methods that can be used according to the characteristics of the intestinal specimen. The test method used is the burst strength test (BST), which is a method to test the material's ability to withstand maximum pneumatic pressure before bursting, thereby producing a burst strength pressure (BSP) value. Before starting measurements on the test samples, sensor calibration against a reference with an input of a measured pressure of 60 kPa was performed and achieved in the range of 0 to 40 kPa (4078.86 mmH2O) with determination coefficients (R2) for the Inlet and Outlet sides being 0.9948 and 0.9945, respectively. In the next stage, testing on the pneumatic system device prototype, consisting of a pump and air pressure sensor circuit, will be designed to determine the level of repeatability, accuracy, and precision of the device, showing BSP values obtained for a long balloon at the Inlet and Outlet averaging 40.62 kPa and 38.10 kPa at a burst time of 469 seconds. Meanwhile, the BSP values obtained for fresh small intestines at the Inlet and Outlet averaged 22.72 kPa and 20.59 kPa at a burst time of 36 seconds. For small intestines that were stitched and stitched + stapled, all leaked completely from the beginning, while for small intestines treated with staples + AFG, the BSP values obtained were 6.95 kPa – 8.94 kPa with a burst time of 11-21 seconds, and for staples alone, the BSP value obtained was 6.45 kPa with a burst time of 11 seconds. The results of the pressure response pattern readings for each treatment group have already shown significant differences and similarities among the same treatment groups, indicating that the prototype has performed consistent measurements.