Drug delivery device for medical oncology

Abstract

The invention discloses a drug delivery device for medical oncology, which comprises a storage shell, an air supply mechanism, a winding mechanism, a damping adjusting mechanism and an elastic attaching type drug applying film, and the elastic attaching type drug applying film is fixedly connected to the top open end of the storage shell; the elastic attaching type medicine applying film is reversely and inwards shrunk in a cavity of the storage shell, and the winding mechanism is rotationally connected to the interior of the tail end of the storage shell and used for winding the traction unit; the storage volume is reduced through reverse inward contraction of the special elastic attaching type upper medicine film, meanwhile, the length of the storage shell is increased, the diameter is greatly reduced, foreign body sensation of anus insertion is reduced, the elastic attaching type upper medicine film is extruded to form a contraction state, the hindering effect on the anus is further reduced, and meanwhile the wiping effect of the wiping bottom layer is improved. When medicine is applied to the medicine applying face, the influence of impurities on medicine effect absorption is reduced to the minimum, and after the medicine applying face is applied, the medicine applying face shrinks reversely and is closed, so that external pollution is avoided.

Description

technical field [0001] The invention relates to the technical field of rectal administration, in particular to a drug delivery device for medical oncology. Background technique [0002] Most cancer patients are accompanied by esophageal stenosis and intestinal obstruction, and cannot be taken orally. At the same time, when some drugs are taken orally, adverse reactions such as nausea and vomiting will also occur. For such patients or special drugs, rectal anal administration is used. After the drug is absorbed through the intestinal mucosa, most of the drugs enter the systemic circulation system without passing through the liver, reducing the impact of the liver first-pass effect on the liver. However, the anus is in a tightly closed state due to the influence of the sphincter. When the medicine is applied in the anus, if the protruding medicine application device is too thick, the sphincter muscle will be in a state of expansion during the medicine application period, and t...

AI Technical Summary

Problems solved by technology

However, the anus is in a closed state due to the influence of the sphincter. When applying medicine in the anus, if the extended medicine application device is too thick, the sphincter will be in a state of expansion during the period of application of the medicine, and the foreign body sensation will greatly reduce the comfort of the patient. At the same time, some fecal impurities adhered to the rectum are likely to hinder the drug. If the drug adheres to the surface of the fecal impurities, it cannot contact the mucous membrane, which will affect the absorption of the intestinal mucosa

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