A kind of exhaust component and its catheter and syringe

Abstract

Embodiments of the present disclosure disclose an exhaust component, a catheter and an injector including the same. The exhaust component includes: a cavity, which includes a bottom cavity and an extension cavity communicating with it and extending upward, the bottom cavity is configured to allow liquid to flow in and out, and the extension cavity is provided with a support portion; an exhaust hole, which set on the top of the extension cavity; and a floating block, which is arranged in the extension cavity and forms a gap with the cavity wall of the extension cavity, wherein the floating block is configured to be supported on the supporting part, and is dimensioned to be capable of blocking Vent. The exhaust part of the embodiment of the present disclosure and the catheter and the syringe including the same can be used to automatically discharge the gas from the vent hole by using the exhaust part of the present disclosure after the various injection components such as the catheter and / or the syringe are assembled, and the gas is completely exhausted. Finally, an airtight seal relative to the outside world is automatically generated, and the liquid medicine can enter the patient's body smoothly through the bottom cavity of the exhaust part without being pressed out by the air pressure, which can ensure the smooth progress of the injection process.

Description

technical field [0001] The present disclosure relates to the technical field of medical instruments, in particular to an exhaust component, a catheter and a syringe including the same. Background technique [0002] During the diagnosis and treatment of some diseases, drugs are usually injected into the patient's body (such as the lungs) by using a catheter and / or a syringe to suppress and improve the patient's symptoms. However, when injecting, since the injected body part itself has a certain air pressure, the drug will be pressed out by the air pressure and leak from the fitting gap during injection, such as figure 1 As shown, the drug will leak from the fitting gap between the catheter 9 and the nipple 13 of the syringe 10 along the direction indicated by the arrow A, which not only wastes the drug, but also pollutes the treatment environment. In addition, sometimes there is a certain amount of gas in the syringe or catheter, and when injecting drugs such as intramuscula...

AI Technical Summary

Problems solved by technology

However, when injecting, since the injected body part itself has a certain air pressure, the drug will be pressed out by the air pressure and leak from the fitting gap during injection, such as figure 1 As shown, the drug will leak from the fitting gap between the catheter 9 and the nipple 13 of the syringe 10 along the direction indicated by the arrow A, which not only wastes the drug, but also pollutes the treatment environment

In addition, sometimes there is a certain amount of gas in the syringe or catheter, and when injecting drugs such as intramuscular or intravenous injections, injecting the gas into the body together is not good for the patient's body, and it is necessary to pre-exhaust the gas before the injection. At present, it usually relies on Physician's manual operation pre-exhausts, for example, by promoting the liquid medicine to overflow from the nipple 13 of the syringe 10 so that the air bubbles therein are discharged, and then the nipple 13 of the syringe 10 is loaded with a needle for direct injection or is connected to the catheter 9 for injection, which Can cause drug waste, especially in the case of tiny injections of expensive drugs such as insulin injections, and cause pollution to the treatment environment and troubles in the treatment process

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