Device for sandwich injection

Abstract

The invention aims to solve the problem that existing injectors cannot inject three different medicines separately and discloses a device for sandwich injection. The device comprises a mounting plate,a flat mirror, a universal rod, an outer casing, a push rod, a small storage battery, a lead, a guide tube, a telescopic airbag, an air guide plate, a mounting rod, a connecting rod, a heating rod, an injection head, a first gear, a first rotating shaft, an inner barrel, a liquid passing hole, a second gear, a second rotating shaft, a chain, a motor, a rubber membrane, a guide barrel, a coil spring, a press plate, a sliding rod, a lantern ring and a rubber gasket. The structures of three chambers of the inner barrel are ingeniously combined, so that separate storage of three different medicines can be realized, meanwhile, injection of three different medicines is facilitated, use of three injectors is avoided, all that is required for injection of different liquid medicines through switching of the inner barrel is to perform injection sequentially by the injection heads of the injectors, and the device is more convenient to operate, meets social demands and is worth promoting in the medical field.

Description

technical field [0001] The invention relates to the field of medical injectors, in particular to a device for sandwich injection. Background technique [0002] Gastric varices (GV) occur in approximately 20% of patients with portal hypertension. Although the incidence of gastric varices is lower than that of esophageal varices, once it ruptures and bleeds, the condition is dangerous, the amount of bleeding is large, the mortality rate is high, and the rebleeding rate is high. Very important. The treatment of gastric varices includes drugs, endoscopy, intervention, surgery and so on. Endoscopy is one of its important methods, and the curative effect of injecting tissue glue is the most certain in endoscopic treatment. Due to the fast setting speed of the tissue gel, it is easy to cause serious consequences due to the filling of the injection needle. To prevent the filling of the injection needle, the classic method used in the injection process is the "sandwich method of l...

AI Technical Summary

Problems solved by technology

[0003] In addition to the need to use the "sandwich" injection method when injecting tissue glue, in medicine, when a patient needs to inject multiple drugs, it is necessary to put the drugs into different needle tubes, and then place the needle tubes , the needle tube placed outside is easy to be contaminated, which will cause bacterial infection during injection. As the name implies, "sandwich" injection is to inject three substances into the human body, but the existing needle tube cannot be realized. At the same time, the existing The function of the needle tube is relatively single, it is difficult to control the flow rate of the needle tube, and the injection speed is also difficult to control, and the existing needle tube is not easy to observe in all directions during the injection process, thereby reducing the observation range of the medical staff, and the liquid medicine takes a long time Precipitation is also easy to occur when stored in the needle, which will affect the uniform injection of the drug, and it is not easy to heat the drug solution during the injection process, and it will produce a cold feeling and feel uncomfortable during the injection.

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