Drug delivery device for tumor site

Abstract

The invention discloses a medicine application device for tumor parts. The device comprises an outer cylinder body, a circular medicine bin, a medicine conveying mechanism, a limit conical cylinder, an upper cover body and a lower cover body. The upper cover body is cooperatively and rotatably connected with the top of the outer cylinder body, and the medicine conveying mechanism comprises a fixing shaft which is downwards fixed from the center of the bottom surface of the upper cover body, a first bevel gear fixed to the lower end of the fixing shaft, a cam shaft which extends out of the inner wall of the outer cylinder body, a second first bevel gear fixed on the cam shaft, a rotation cam, a medicine conveying rod with an annular clamping table and a reset spring. According to the medicine application device for the tumor parts, through the medicine conveying mechanism driven by the bevel gears and a cam mechanism, the processes of medicine conveying and medicine liquid recycle are completed, through the function of the reset spring, the time difference exists between medicine liquid recycle and medicine conveying, and the sufficient application time of medicine liquid on the tumor parts is provided. Through the limit conical cylinder, the tumor parts are accurately positioned, the processes of medicine conveying and medicine liquid recycle can be completed just by rotating the upper cover body, and the operation process is extremely easy and convenient. In addition, the medicine application device for the tumor parts further has the advantages of being capable of savingenergy, environmentally friendly and low in cost.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a drug delivery device for tumor sites. Background technique [0002] At present, in the treatment of tumors, it is often necessary to observe, sample, and administer drugs to the patient's tumor site. The current methods are mainly to control the treatment by taking or instilling related drugs, but this method has a long cycle of medication. , and because the drug is absorbed through the digestive or circulatory system instead of directly targeting the affected part of the medical tumor, the onset of effect is often slow and the control effect is not obvious, thus requiring long-term treatment, which increases the burden on patients and brings pain to patients. Inconvenience. Because the therapeutic dose of chemotherapy drugs is very close to the toxic dose, medical staff often adopt a conservative and multi-course medication process for the drug dose, and the effect of...

AI Technical Summary

Problems solved by technology

However, this kind of device is inconvenient to operate during use. The staff needs to hold the baffle with one hand and pull the handle with the other to drive the double-piston structure. The spraying position at the bottom shakes, so a good operating experience cannot be obtained

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