Remaining needle with unilateral-seam protective sleeve

Abstract

The invention relates to a medical instrument suitable for being applied into a blood vessel, in particular to a remaining needle with a unilateral-seam protective sleeve. The remaining needle with the unilateral-seam protective sleeve prevents a needle point from stabbing the blood vessel and prevents blood contamination. The remaining needle with the unilateral-seam protective sleeve comprises the needle tube protective sleeve, a tube guide assembly and a puncturing needle tube assembly. The needle tube protective sleeve is a long hollow shell. One side wall of the needle tube protective sleeve is provided with a sliding seam of a certain length. The front end of the sliding seam is open, and the rear end of the sliding seam is blocked or opened. The seam corresponds to an operation wing and can contain the connection portion between the operation wing and a needle base. The needle tube protective sleeve is inserted into the needle base from the rear end of the remaining needle in a sleeving mode, slides to a clamping and contacting device between the remaining needle and the needle base and is connected with the clamping and contacting device in a clamped and contact mode. The remaining needle with the unilateral-seam protective sleeve has the advantages that after the remaining needle is used for puncture, the needle tube and the needle point can be effectively protected, the situations that a person is accidentally hurt in the subsequent treatment process of the needle tube, and blood contaminates the environment are avoided, the structure of an existing puncturing needle and the puncturing mode are not changed basically, and the remaining needle is high in practicability and convenient to apply and popularize.

Description

technical field [0001] The invention relates to a medical device suitable for blood vessels, in particular to an indwelling needle of a unilateral slot protective sheath which can prevent needle point stabbing and blood pollution in clinical medicine. Background technique [0002] In order to successfully insert the catheter into the patient's blood vessel in clinical medicine, various puncture techniques have been used in clinical medicine. Typical techniques are as follows: figure 1 As shown, the indwelling needle is composed of a needle protection sleeve, a catheter assembly and a puncture needle assembly. Before the puncture, the protective cover of the needle tube should be taken off and set aside. After the puncture is successfully placed, the puncture needle tube can be withdrawn. Because the inner diameter of the protective cover is relatively small, it cannot be inserted into the needle seat, and it is also dangerous to put the protective cover back on the needle se...

AI Technical Summary

Problems solved by technology

Before the puncture, the protective cover of the needle tube should be taken off and set aside. After the puncture is successfully placed, the puncture needle tube can be withdrawn. Because the inner diameter of the protective cover is relatively small, it cannot be inserted into the needle seat, and it is also dangerous to put the protective cover back on the needle seat. , may stab yourself, so medical staff usually put the used puncture needle tube directly into the waste box, so that the needle tube and needle tip are exposed without protection, when the medical staff cleans up and destroys the used needle tube assembly , it is easy to accidentally stab people and be threatened by infectious diseases. At the same time, there is blood in the needle tube and it will pollute the environment

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