Special three-way valve and matching syringe assembly for right heart contrast echocardiography and foaming test

Abstract

The invention discloses a special three-way valve and a matching syringe assembly for right heart contrast echocardiography and foaming test. The special three-way valve and the matching syringe assembly comprise a three-way valve and a syringe; the three-way valve comprises a valve body (10); an interface A (101), an interface B (102) and an interface C (103) are sequentially arranged on the valve body (10), wherein included angles between the interface A (101), the interface B (102) as well as the interface C (103) and the valve body (10) are respectively 90 degrees; a valve core (20) is mounted inside the valve body (10) in a sealed way; a three-way spinner (201) is arranged at the upper end of the valve core (20); three outlets of a three-way hole (202) inside the valve core (20) are respectively in correspondence to the three interfaces of the valve body (10); external threads are arranged at the interface A (101) of the valve body (10); internal threads are arranged at the interface B (102) of the valve body (10); a circle of convex platform (30) is arranged outside the interface C (103) of the valve body (10); the interface C (103) of the valve body (10) is connected with asleeve (40) via the convex platform (30) on the outside, namely, the smaller end of the sleeve (40) is in clamped connection with the convex platform (30) of the interface C (103) of the valve body (10); and internal threads are arranged inside the larger end of the sleeve (40). Two kinds of connection ways can be adopted for the three-way valve and the syringe, so that, firm connection is ensuredso as to facilitate operation; moreover, medical resources can be saved with protection on patients and medical personnel guaranteed.

Description

technical field [0001] The invention relates to a medical device, in particular to a special tee and a matching syringe assembly mainly used for right heart acoustic contrast imaging and foaming test. Background technique [0002] With the further deepening of the current understanding of right heart echocardiography and foaming test to solve medical problems, this kind of examination is more and more used clinically. At present, the most commonly used method is to use 8ml of normal saline + 1ml of air + 1ml of the patient's own blood to prepare microbubble contrast agent when performing right heart echocardiography or foaming test. The materials to be used in this process are roughly as follows: 1 set of 18G indwelling needle, 1 three-way valve, 2 20ml syringes, 1 10ml syringe, 1 bag of 200ml normal saline, 1 indwelling needle film, and 1 band-aid. During the inspection, the three-way valve has a threaded end to connect to the intravenous indwelling needle. One of the 20ml...

AI Technical Summary

Problems solved by technology

During this process, on the one hand, when pushing repeatedly, a large number of microbubbles are formed in the syringe to generate greater pressure; on the other hand, the inner surface of the three-way valve interface and the joint of the injection head of the syringe are smooth surfaces, so the interface between the three-way valve and the syringe is easy to collapse. Open, causing the splash of micro-liquid bubbles containing the patient's blood components, hindering the smooth progress of the inspection, causing pollution, and posing a threat to the health of medical staff

In order to avoid this situation, one person is required to fix the three-way valve and its interface with the syringe. Even so, the occurrence of splashing cannot be completely avoided.

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