Safe instrument with injection and hemospasia functions

Abstract

The invention provides a safety instrument with functions of blood letting and injection, which relates to an instrument that can avoid blood contamination and can simply and smoothly input or extract media into or out of human body. The safety instrument comprises a syringe, a needle head group fixedly arranged at one end of the syringe, a handspike slipperily arranged in the syringe, an adapter piece slipperily arranged at one end of the syringe, and a conduit connected with the adapter piece. The adapter piece comprises a flow channel perforative along axial direction and an adapter base of a first bypass which extends along the radial direction and is communicated with the flow channel. The conduit is a hollow tube which is fixedly connected with the flow channel end of the adapter base and is placed in blood vessel; the conduit injects blood from the adapter base to the blood vessel or draws blood from the blood vessel to the first bypass.

Description

[0001] This application is a divisional application; the invention title of the original application is "safety device with injection and blood drawing function"; the application number is "03102656.7"; the application date is "February 13, 2003". technical field [0002] The invention belongs to a device component for inputting and extracting a medium in the body, in particular to a safety device with the functions of injection and blood drawing. Background technique [0003] During general intravenous injection, the intravenous syringe 1 shown in FIG. 1 is mainly used as an instrument for injecting medicine or drawing blood. [0004] The intravenous syringe 1 includes a hollow needle base 11 , a hollow needle body 12 , a hollow connecting piece 13 and a hollow flexible conduit 14 fixed to the connecting piece 13 . [0005] One end 111 of the needle holder 11 is fixedly connected to the needle body 12 and fixed to the adapter 13 , so that the needle body 12 passes through t...

AI Technical Summary

Problems solved by technology

However, needle holders with extremely small diameters and usually made of plastic injection molded products need to be additionally equipped with metal springs and other matching components, which will not only increase assembly troubles, but also increase material, manufacturing, and testing costs, and increase product defects. rate, and because of cumbersome assembly procedures, the chances of components being contaminated will be greatly increased

[0009] 2. As shown in Figure 2, when the needle body 12 guides the catheter 14 into the blood vessel, although the through hole 121 can be used to make the blood seep out to the gap between the catheter 14 and the needle body 12, the function of bleeding can be achieved, to show It is known that the medical personnel have correctly inserted the needle body 12 and the catheter 14 in the blood vessel, but the technical means of setting the through hole 121 on the wall 122 of the needle body 12 is easy to bend the thin needle body 12; moreover, if During operation, when the whole section of needle body 12 and catheter 14 is submerged in subcutaneous tissue or blood vessel, the function of bleeding will be lost.

When the patient's blood pressure is not enough to make the blood seep out from the through hole 121, the status of use cannot be displayed correctly

[0010] 3. In addition, when the needle body 12 is pulled out from the catheter 14 and the catheter 14 is placed in the blood vessel, the medical staff must press and fix the connecting piece 13 and the catheter 14 with one hand.

Therefore, only the other hand can be used to perform the action of fixing the connecting piece 13 and the drip or the syringe, so that there is a lack of smooth operation, especially when the syringe is used to collect blood as a sample, it is more inconvenient to operate with one hand

Moreover, when the connecting piece 13 is replaced with the syringe and the drip line, it is easy to cause contamination of the connecting point due to careless operation, thereby causing blood to be infected.

Furthermore, after the syringe obtains blood, the blood must be transferred into the collection tube for storage and inspection, which makes the process of intravenous injection and blood collection quite complicated, and there is a potential risk of contamination

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