An experiment device to simulate body hyperthermia CO2 pneumoperitoneum

Abstract

A simulating human body hyperthermia CO2 pneumoperitoneum experimental device belongs to the medical experimental device technologies field. It is the experimental installation to meet the system comprehensive needs of the hot CO2 pneumoperitoneum research. The invention is characterized by the pneumoperitoneum box whose capacity can be compared to the human abdominal cavity, and it is a hollow hexahedron consisted of thermal insulation resin material, and the box wall outside is covered sealed in turn from inside to outside with aluminum foil, asbestos heating strap wired with heating resistor lines, insulating sleeve surfaced outside and consisting of soft insulation foam; there are three pipes connected with the pneumoperitoneum box, an upward pipe being the intake pipe, connected to the export of heat CO2 generator, and the other two for the upward and downward, and being the pipes respectively with the control valve. The heat CO2 generator comprises the CO2 heater, nebulizer and mixer. The invention provides a human thermal CO2 pneumoperitoneum simulation experimental device which can control CO2 temperature, humidity, flow and pressure, to the greatest extent simulates human body pneumoperitoneum conditions outside the human body, and completes heat CO2 pneumoperitoneum system research under clear temperature field distribution.

Description

technical field [0001] It is a medical experimental device technology, which involves simulating human body heat CO 2 Pneumoperitoneum experimental setup. Background technique [0002] Minimally invasive surgery is the development direction of modern surgery, and laparoscopy is its representative technology. CO as a basis for laparoscopic surgery 2 Pneumoperitoneum has always been the focus of laparoscopic technology research. Routine pneumoperitoneum application is mainly normal temperature CO 2 (room temperature 25°C), and its application safety has been systematically studied. However, normal temperature CO 2 There are many deficiencies in the gas, which can cause a drop in body core temperature and lead to a stress response, which affects the postoperative recovery of patients, and the problem becomes more prominent as laparoscopy is used in long-term operations such as malignant tumor operations. In addition, it can also cause abdominal and ...

AI Technical Summary

Problems solved by technology

These experimental devices have the following problems: ①The heating can only reach a maximum of 41°C, which cannot reach the temperature of hot CO2. 2 The temperature above 41°C required for research; ② Warm CO 2 The temperature distribution of gas in a certain space is often uneven, and different parts have different temperatures. When the space is large, the temperature difference can be large

However, the current experimental device, regardless of the heating and humidification method, measures the temperature and humidity at the gas outlet temperature of the instrument, and the temperature and humidity probe is a single probe, which cannot move freely, and cannot be placed in the pneumoperitoneum simulation equipment to measure the pneumoperitoneum. The actual temperature of a specific part, so although there is a constant temperature adjustment device and adjustment ability, but because the probe is fixed, only the gas temperature and humidity at the gas outlet of the instrument can be guaranteed, and the temperature and humidity of a specific part in the pneumoperitoneum cannot be guaranteed; ③ Insufficient pneumoperitoneum simulation equipment : Lack of corresponding well-matched pneumoperitoneum simulation equipment, simple structure of pneumoperitoneum simulation device leads to pneumoperitoneum simulation distortion, such as lack of simulation of human abdominal wall temperature, volume does not conform to the actual pneumoperitoneum capacity of human body, etc., insufficient control of research factors such as pressure and flow , warm CO 2 The temperature distribution of the gas is unknown, etc.

In general, the current experimental setup cannot meet the system's comprehensive warm CO 2 The need for pneumoperitoneum studies, the lack of a good model of human body warming CO 2 pneumoperitoneum experimental setup

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