Injection device used under medical endoscope

Abstract

The invention discloses an injection device used under a medical endoscope, which comprises a front handle component, a rear handle component and a puncture component which are connected in sequence, wherein the front handle component comprises a front handle body and an outer tube connected with the front handle body; the rear handle component comprises a three-way handle and an inner tube connected with the three-way handle; a soft indwelling catheter is arranged at the other end of the inner tube, and the three-way handle comprises a side passage and a main passage; the puncture component comprises a puncture needle head, a push rod and a tail handle which are connected in sequence; and the inner tube is positioned in the outer tube, the puncture needle head and the push rod are positioned in the three-way handle, and are in clearance fit with the inner tube, the puncture needle head is closely matched with the tail end of the soft indwelling catheter, and a gap of the puncture needle head and the push rod as well as the inner tube is communicated with the side passage of the three-way handle. The injection device used under the medical endoscope has a skillful structure, avoids the risk of cutting the blood vessel in the whole operating process, and can be retained in the human body for longer time, thereby providing sufficient operating time for a doctor.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a medical endoscopic injection device capable of effectively reducing human body irritation. Background technique [0002] Ordinary endoscopic needle therapy is risky, and the treatment process is usually endoscopic intravenous injection of sclerotherapy, tissue glue and other drugs into esophageal and gastric varices. During the treatment process, the metal needle needs to stay in the blood vessel for a period of time. Since the gastroesophagus itself is a peristaltic organ, after inserting an external foreign body such as an endoscope, the patient will experience nausea and vomiting symptoms, which will increase the pressure on the gastroesophagus. At this time, the injection needle is very easy to cut through the blood vessel and cause massive bleeding, resulting in the death of the patient. In mild cases, it also brings great discomfort to the patient. Due to the hig...

AI Technical Summary

Problems solved by technology

During the treatment process, the metal needle needs to stay in the blood vessel for a period of time. Since the gastroesophagus itself is a peristaltic organ, after inserting an external foreign body such as an endoscope, the patient will even have symptoms of nausea and vomiting, which will increase the size of the gastroesophagus. At this time, the injection needle is very easy to cut through the blood vessel and cause massive bleeding, resulting in the death of the patient. In mild cases, it will also bring great discomfort to the patient.

Due to the high risk and difficult operation techniques, this technique can only be carried out by individual highly skilled experts in a few large hospitals, and many patients lose the chance of treatment

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