38 results about "Liver perfusion" patented technology

The invention relates to the medicine field, especially relates to a perfusion device, which can rapidly carry out connection and perfusion when obtaining a supplied liver in an organism (liver) transplant operation, and specifically relates to a supplied-liver quickly-fixed perfusion device for liver transplant. The perfusion device comprises a puncture guiding device and a connecting ring for connecting a perfusion pipe. The puncture guiding device is a puncture steel wire, a contractible and magnetic ring is arranged on the top end of the steel wire, the top end of the connecting ring is in a conical shape, the bottom of the connecting ring is connected to a perfusion pipe, a unidirectional valve is arranged in the bottom of the connecting ring, the top of the connecting ring is made of an iron-containing material, the top of the connecting ring is matched with the contractible ring, and the top of the connecting ring and the contractible ring absorb on each other through magnetic force. The operation of the device is simple, practicable, and pertinent. The device is mainly used to carry out rapid perfusion when obtaining a supplied liver in a liver transplant operation, and is capable of rapidly and effectively performing liver perfusion so as to obtain a high quality liver.

The invention provides a CT liver-perfusion image post-processing method and a CT liver-perfusion method. The CT liver-perfusion image post-processing method includes: obtaining a CT liver-perfusion image sequence and identifying an abdominal aorta from the CT liver-perfusion image sequence so as to obtain a time curve of a hepatic-artery contrast-agent concentration; and based on the time curve of the hepatic-artery contrast-agent concentration, calculating a contrast-agent concentration time curve of each pixel point and obtaining liver-perfusion parameters. The invention also provides a CT liver-perfusion method which uses the CT liver-perfusion image post-processing method. The CT liver-perfusion image post-processing method and the CT liver-perfusion method are higher in accuracy.

The invention discloses an in-vitro liver perfusion device which comprises a perfusion liquid storage container set composed of 3 perfusion liquid storage containers, a four-way pipe, a perfusion pump, a heat exchange system, an oxygenator, a defoaming device, a perfusion catheter, a three-way pipe and a reflux pump. The in-vitro liver perfusion device can perform three-step perfusion on the in-vitro liver, maximally perform effective perfusion on the pre-perfusion liquid and digestive juice quickly and continuously, and maximally control the hepatic tissue digestion process, thereby saving the cost, keeping the temperature constant, reducing the pollution, and further obtaining sufficient experimental and clinical liver cells with high quality (especially abundant liver cells required by liver cell transplantation, biological artificial livers and the like).

The invention discloses a liver perfusion device, which comprises a main machine, an air-oxygen mixer assembly and a monitoring assembly. A consumable assembly is clamped on a worktable of the main machine, and when different livers need to be perfused, only the consumable assembly needs to be replaced, so that convenience is achieved; the main machine is internally provided with a temperature adjusting assembly in pipeline connection with the consumable assembly, thus the temperature of circulating water entering a first lung membrane oxygenator and a second lung membrane oxygenator for heatexchange can be adjusted through the temperature adjusting assembly, and then liver perfusion can be conducted under different temperature conditions according to the actual needs; and in addition, the main machine has different liver perfusion modes, a user can set hepatic artery and portal vein perfusion methods according to the actual needs, the perfusate oxygenation degree is adjusted according to an air-oxygen mixer, different drugs are injected by a micro-injection pump, and the effects of liver long-term preservation, improvement, repair and the like are achieved.

The invention discloses a gas delivery system for liver perfusion, the control module of which controls the work of the oxygen delivery control component and the compressed air delivery control component respectively according to the output results of the hepatic artery neural network training model and the portal vein neural network training model, so that the Based on the neural network training model and the preset oxygen partial pressure, carbon dioxide partial pressure and blood oxygen saturation, the real-time detection results of the hepatic artery detection module and portal vein detection module are trained respectively, and the gas in the hepatic artery and portal vein can be adjusted in real time and accurately delivery volume, so that the oxygen partial pressure, carbon dioxide partial pressure and blood oxygen saturation can be output stably according to the predetermined value; moreover, the bottom of the base is also equipped with universal wheels, so that the gas delivery system can be used and installed in different surgical sites ; In addition, when the gas storage capacity in the oxygen storage cylinder and the compressed air storage cylinder reaches a critical value, the relevant information can be notified to the operator in time through the alarm module.

The present invention relates to the field of extracorporeal liver perfusion and, more particularly, to the design of a chamber in which a biological component can be housed to form e.g. a bio-artificial liver (BAL). It also relates to a bio-artificial liver per se, it's components and methodological steps associated with its development and use. The chamber (10) for the biological component (100) of a bio-artificial liver (200) is configured to allow: •Proliferation of the biological component, in situ; •Cryopreservation of the biological component, in situ, and •Perfusion of the biological component, in situ.