CN2275454Y - Arteriovenous needle - Google Patents

Abstract

The utility model provides an arteriovenous indwelling needle which relates to a medical device and is composed of a steel needle body, a trocar body, and a casing plug, wherein the casing plug can tightly sheathed on the trocar body. Patients are injected or transfused for many times only need one-time puncture for arteries and veins.

Description

A kind of iv cannule

This utility model relates to the injection medical apparatus and instruments.

Chinese patent 90201360.2 discloses the iv cannule of Zhejiang Huadong Medical Instrument Factory, Leqing County, and cover needle body that the draw point body that it is made up of draw point pipe and needle tubing seat, trocar tube and trocar base are formed and seat plug three form.To overlap needle body during use and be inserted in the draw point body, the trocar tube of cover needle body thrust in the arteriovenous simultaneously when then the draw point body was finished artery and vein puncture to patient, puncture only transfer to the draw point body after finishing and will overlap needle body be retained in patient on one's body again with seat plug plug on the trocar base that overlaps needle body.Only need transfer to a plug draw point body weight newly to enter the cover needle body when injecting for the second time just can.Transfer to easy infection unhygienic because the seat plug is dragged on, can be pressed into blood vessel to air when filling in simultaneously at every turn.

The purpose of this utility model is to overcome the shortcoming that the seat plug is dragged on and transferred to the unhygienic of initiation and be pressed into air, provides a kind of nothing plug mechanism, safe and sanitary.

Scheme of the present utility model is: be enclosed within on the trocar base of needle body to the overcoat plug resilient tight fit that a medical grade silicon rubber is made, when puncturing for the first time, to overlap needle body is enclosed within and enters disease on the draw point body simultaneously and go into arteriovenous, then transfer to the draw point body, the overcoat jam-pack thickly is enclosed within on the trocar base, and multiple injection only needs the draw point pipe is thrust just injectable of overcoat plug, and the draw point pipe is transferred in the injection back, because the overcoat plug is made by medical grade silicon rubber, has the elasticity automatic sealing.

Advantage of the present utility model is that multiple injection or transfusion only need one-time puncture patient arteriovenous, and easy to operate safety and sanitation again.

Accompanying drawing 1 is the needle tubing seat, and 2 is the draw point pipe, and 3 is the overcoat plug, and 4 is the trocar base, and 5 is trocar tube.

This utility model is to implement like this: when patient is punctured, with the cover needle body of sterilizing be enclosed within be locked on the draw point body after just the draw point head expose outside the trocar tube, then thrust patient's arteriovenous simultaneously, then pin the cover needle body, transfer to the draw point body, again the overcoat jam-pack thickly is enclosed within on the trocar base of needle body, will overlaps needle body with adhesive plaster and be fixed on one's body the patient.Only need during multiple injection with disinfectant overcoat plug surface to be carried out disinfection, then draw point is thrust overcoat plug just injectable or transfusion, the injection back only needs to transfer to draw point, and the overcoat plug has the elasticity automatic sealing owing to made by medical grade silicon rubber.

Claims (1)

1. A kind of iv cannule comprises draw point body and cover needle body, it is characterized in that the overcoat plug that has individual medical grade silicon rubber to make can be enclosed within on the trocar base of needle body to resilient tight fit.

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