Repeated puncture preventing structure for indwelling needle

Abstract

The invention discloses a repeated puncture preventing structure for an indwelling needle which comprises a puncture needle, an infusion three-way pipe, a protective cap and a rubber sleeve. The protective cap is fixedly connected to one end of the top of the infusion three-way pipe in a clamped mode, and a puncture needle base is fixedly connected to the interior of the top face of the protectivecap in a clamped mode. The top of the puncture needle base is fixedly connected with a guide seat through threads, the center of the bottom of the puncture needle seat is fixedly connected with a puncture needle in a clamped mode, the portion, located on the outer side of the puncture needle, of the bottom face of the puncture needle seat is fixedly connected with a rubber sleeve in a clamped mode, and a puncture handle is integrally formed on one side of the outer wall of the protective cap. An infusion tube is integrally formed on the side, away from the puncture handle, of the middle of the infusion three-way tube. By means of guiding of the guide base, the success rate of puncture is increased, damage to a patient due to repeated puncture is prevented, and meanwhile secondary damage caused after the puncture needle is pulled out is prevented through protection of the rubber sleeve.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a structure for preventing repeated punctures for indwelling needles. Background technique [0002] Arteriovenous indwelling needle is a medical device for injection. The needle is composed of a smooth plastic needle tube covered with a steel needle tube. During injection, the plastic needle tube is inserted into the arteriovenous along with the steel needle at the same time. After the puncture, the steel needle tube is removed. Needles, and plastic needle tubes can be left in arteries and veins for a long time, as indwelling needles for continuous injection of infusion, blood transfusion and tumor chemotherapy injection, or long-term nutritional infusion. Indwelling needles are easy to use and reduce the number of punctures for patients, thereby reducing repeated punctures during clinical infusion, reducing the pain of puncture for patients and the workload of clinical n...

AI Technical Summary

Problems solved by technology

[0004] When traditional indwelling needles are used, for different patients, the thickness, straightness and good elasticity of the venous blood vessels are not the same. For patients with small and fragile blood vessels, the needle insertion angle is not easy to be too large during puncture. The experience requirements of medical personnel are relatively high. For medical personnel with less experience, it is difficult to grasp the angle of needle insertion, which may easily cause puncture failure, repeated puncture, and increase the pain of patients. The needle tip of the needle is exposed, which is easy to cause puncture injury and has a great safety hazard

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