Medical ligation injection therapeutic instrument

Abstract

The invention provides a medical ligation injection therapeutic instrument. The instrument comprises a shell, an adsorption part, a ring push part and a drive mechanism, wherein the adsorption part comprises a sucker, a cylinder, a piston and an air suction pipe; the ring push part comprises a push sleeve and a push pipe; the drive mechanism comprises a trigger and a composite gear which is matched with the trigger and drives the piston and the push pipe to move; and a piston cavity is arranged inside the cylinder. The instrument is characterized in that: the area of the round cross section of the piston cavity is gradually reduced from one end connected with the air suction pipe to the other end; and suspension ribs are arranged on the outer surface of the sucker. While the sealing performance between the piston and the inner wall of the cylinder is ensured, the friction force between a seal ring and the inner wall of the cylinder is reduced, so that the instrument is lighter and more convenient to use; and the position on the piston matched with the seal ring is set to be of a conical shape, thus, while the sealing performance and the reduction of the friction force are further ensured, the requirement on the size of the seal ring is reduced, so that most seal rings in a batch are in accordance with the use requirement.

Description

technical field [0001] The present invention relates to a medical injection sleeve therapeutic apparatus, more specifically, to a medical injection sleeve therapeutic apparatus with a conical piston cavity. Background technique [0002] As a convenient medical treatment tool, the medical suction injection ligation device is mainly used for the treatment of hemorrhoids. The invention patent document whose patent number is CN200520081522.5 and whose invention name is a medical multi-energy suction injection ligation device, and the patent document whose patent number is CN200920030932.5 and whose invention name is also a medical multi-energy suction injection ligation device are all applicable to medical The structure of the suction and injection ligation device is disclosed, and its improvement points are that an illumination device is added and a structure that can be provided with a plurality of ligation rubber rings is provided. The medical suction injection ligation devi...

AI Technical Summary

Problems solved by technology

In order to ensure the therapeutic effect, the drug is generally administered when the piston moves to about 2 / 3 of the piston cavity, but in the actual operation process, it is difficult to grasp the moving distance of the piston, and it is very easy to have improper timing of drug administration

Third, the medical suction and injection ligation device disclosed in the above-mentioned documents cannot simultaneously complete multi-point administration treatment at one time, and is inconvenient to use in many treatment occasions

For example, when treating the tonsils or soft palate of the human body, one-time multi-point drug delivery is required, but it cannot be realized according to the above disclosed sucker structure.

[0004] Finally, in the actual use process, the two medical suction and injection ligation devices disclosed above are also prone to relative rotation between the suction pipe and the cylinder, resulting in air leakage; and the rotation of the cylinder in the housing is also prone to problems , these will affect the normal use of the suction and injection ligature, reducing the service life of the suction and injection ligature

[0005] Due to the small size of the ligation rubber ring, it is very difficult to put it on the relatively large suction cup. The patent number is CN201110026886.3, the invention name is "a kind of cone expander for ligation rubber ring" and the patent The number is CN201110026860.9, and the title of the invention is "A Coil Coiler for Ligating Rubber Ring Cooperating with Cone Expander", which discloses a cone expander and a coiler for mounting the rubber ring on the outer surface of the suction cup, but in In the actual use process, it was found that since the support ribs are only set on the outer surface of the cone expander, in the process of using the coiler to cooperate with the coiler, it is very easy to appear that the telescopic rod on the coiler and the rubber ring are missing. The phenomenon of detachment, resulting in the failure of the lap

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