35results about How to "Adequate perfusion" patented technology

Magnetic anchoring devices are disclosed herein. Expandable devices that are inserted into the stomach of a patient are attached to its interior wall by magnetically coupling. Such expandable devices, like inflatable balloons, comprise at least one magnetic device, which may be a magnet, a magnetizable material, or a magnetic metal. The magnetic device may be positioned on the external or interior surface of the expandable device or may be integral thereto. The magnetic device is magnetically coupled to a magnetic anchor positioned on a surface of the stomach wall. In this way, the expandable devices are anchored to the stomach walls, preventing migration of the device to other areas of the body where they may become obstructions and pose health risks.

The invention provides high-temperature RTM (resin transfer molding) integrated molding equipment. The equipment comprises a resin tank, a high-temperature resin distributing pipeline and a curing tank, wherein the resin tank is arranged at the top of the curing tank in an integrated manner, the high-temperature resin distributing pipeline is arranged at the top part in the curing tank to meet the requirements of heat preservation property of the high-temperature resin distributing pipeline and the flowing property of the rein injection runners, the top part of the curing tank is provided with an opening at a glue outlet of the resin tank, three or more product molds can be placed in the curing tank, a mold vacuum pipeline is arranged outside the curing tank, the glue outlet of the resin tank is connected with the high-temperature resin distributing pipeline by a discharging valve, the high-temperature resin distributing pipeline is provided with three or more outlets, each outlet is connected with one mold through a resin distributing valve and a resin flowing pipeline, and each mold is connected with the mold vacuum pipeline by a liquid storage tank. According to the invention, high-temperature resin can be ensured to be fully poured and fed, the molding operation is convenient and the production efficiency is improved.

The invention discloses a cartilage-bone-bone marrow composite tissue structure and method based on 3D printing of living cells. The biological information of bone tissue is collected, input into a computer for bionic modeling, and the preparation is suitable for cartilage, osteogenesis, mesenchymal stem, and blood vessels. Bio-ink for cells such as endothelium; prepare hard materials for printing dense bone areas; prepare various casting agents; inoculate living cells in corresponding bio-inks at a certain density; load various types of printing inks separately 3D printing is carried out after setting the printing parameters in the printer silo, and the printed bone tissue is cultured in a tissue engineering bionic incubator. After a certain period of time, the cast is removed at different times by temperature control, enzyme control or light control. The artificial blood vessels are grafted outside the cartilage-bone-bone marrow composite tissue, and cultured in a tissue engineering bionic incubator with continuous cycle perfusion to realize the pre-maturation of the printed tissue. It realizes the long-term survival and biological function of 3D printed bone tissue.

The invention relates to the technical field of lithium ion batteries, in particular to a method for measuring electrolyte distribution in a lithium ion battery core. The method specifically comprises the following steps of injecting electrolyte containing a tracer element into a to-be-measured lithium ion battery, measuring the content of the tracer element in a to-be-measured part of the lithium ion battery core by utilization of an ion tracing method, calculating actual electrolyte distribution quantity of each region of the to-be-measured part, and obtaining an electrolyte distribution difference value by means of calculating a difference between the actual electrolyte distribution quantity and theoretical electrolyte absorption quantity. The method disclosed by the invention has the advantages that the effects of simplicity and easiness in implementation are achieved; the distribution quantity condition of the electrolyte on a battery anode film sheet, a battery cathode film sheet and an electronic insulating film can be respectively tracked and characterized, so that not only can the injecting quantity of the electrolyte of the battery with different sizes or different materials be predicted, and the condition that sufficient electrolyte is injected into the battery can be guaranteed, but also the distribution tracking on the absorption of the electrolyte of all parts of the battery anode sheet and the battery anode sheet can be performed.

The invention relates to a surgical instrument, in particular to an improved pourable pedicle screw. At least one axial groove (5) communicated with a seepage hole (4) is arranged on the outer surface of a screw body (1) of the pedicle screw. The improved pourable pedicle screw is characterized in that an exhaust hole (6) enabling a thread groove (9) to be communicated with the air is arranged on the periphery of a blind hole (3) and on a screw end (2) of the pedicle screw, and a flow adjusting valve is arranged in an outlet of the exhaust hole(6). The flow adjusting valve is formed by an outlet portion (8) of the exhaust hole (6) and a valve core (7) matched with the outlet portion (8), wherein the valve core (7) is formed by a cylinder and a cone with the gradually-reduced section in sequence from the port of the outlet portion (8) of the exhaust hole (6), and the cylinder is in threaded connection with the outlet portion (8) of the exhaust hole (6). The improved pourable pedicle screw has the advantages of achieving fully pouring and having good fixing effect.

The invention relates to an oxygen carrying coronary contrast medium, which comprises a contrast medium and a hemoglobin oxygen carrying carrier. According to the condition whether the contrast medium is mixed with the hemoglobin oxygen carrying carrier or not before using, the oxygen carrying coronary contrast medium has the following two types of: 1, storing the hemoglobin oxygen carrying carrier and the contrast medium respectively, wherein the hemoglobin oxygen carrying carrier is contained in dilution solution which is diluted by a diluent until the hemoglobin concentration is between 0.1 and 5g / dL, the pH value of the dilution solution is between 7.0 and 7.4; and making the hemoglobin oxygen carrying carrier contained in the dilution solution in an oxygen saturation state by oxygenating before using; and 2, forming mixed liquor by using the hemoglobin oxygen carrying carrier and the contrast medium, wherein the proportion of the contrast medium to the hemoglobin oxygen carrying carrier is limited by the hemoglobin concentration which is between 0.1 and 5 g / dL in the mixed liquor, and the pH value of the mixed liquor is between 7.0 and 7.4; and making the hemoglobin oxygen carrying carrier contained in the mixed liquor in the oxygen saturation state by oxygenating before using.

The invention discloses a method for separating and culturing primary chicken hepatocytes. According to the method, EGTA (Ethylene Glycol Tetraacetic Acid) with low hepatotoxicity is added into a perfusate A to loosen the junction between hepatocytes, so that the dispersion degree of the to-be-separated hepatocytes is increased; double resistance is added into the perfusate A, a perfusate B and D-Hanks flushing fluid, so that the pollution is further prevented; and circulating perfusion digestion is adopted during digestion perfusion, so that the perfusion cost is greatly reduced. A serum-free cultural method of the chicken hepatocytes is established; compared with a traditional serum cultural method, the method disclosed by the invention has the same effect on the aspects of cell quantity, activity, function and the like, so that the problems caused by the existence of serum are solved and a foundation is laid for the substance metabolism study and biological product preparation on the basis of the chicken hepatocyte culture.

The invention provides a liver oxygen-carrying mechanical perfusion device which comprises a temperature control container as well as a first centrifugal pump, an oxygenator, a filtration and bubble discharge device, a flow controller, a first pressure sensor and a portal vein perfusion tube that are sequentially connected with one another by a pipeline to form a first perfusion circulation system, wherein the portal vein perfusion tube is connected with a portal vein of a liver. The liver oxygen-carrying mechanical perfusion device also comprises a suprahepatic vena cava tube, a second pressure sensor, an elastic water container and a second centrifugal pump that are sequentially connected with one another by a pipeline to form a second perfusion circulation system, wherein the suprahepatic vena cava tube is connected with a suprahepatic vena cava of the liver. The elastic water container and the second centrifugal pump are additionally arranged at a liver outflow tract to simulate physiological conditions; with the fluctuation of the pressure of the suprahepatic vena cava in a cardiac impulse process, the resistance of the liver outflow tract is regulated, so that the liver perfusion is more sufficient. According to the device, a marginal donor liver can be repaired, so that the liver confirms to the transplantation requirements, therefore, the liver donation source is greatly expanded.