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Safety syringe

A safety syringe and injection tube technology, which is applied in the field of medical equipment, can solve the problems of high probability of air embolism, injection of air bubbles, and air bubbles entering blood vessels, etc., and achieves the effect of ensuring the safety of surgery and reducing the probability of air embolism.

Pending Publication Date: 2018-11-27
SHANGHAI EAST HOSPITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, air bubbles may still be injected during a large bolus injection, and the probability of air embolism is high, which is still difficult to avoid even with careful operation
In other clinical operations, there is also the problem that air bubbles will enter blood vessels when injecting medicines

Method used

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Embodiment Construction

[0017] The embodiments of the present invention are described in further detail below in conjunction with the accompanying drawings, but the present embodiments are not intended to limit the present invention. All similar structures and similar changes of the present invention should be included in the scope of protection of the present invention. The commas in all represent the relationship between and, and the English letters in the present invention are case-sensitive.

[0018] like figure 1 As shown, a safety syringe provided by the first embodiment of the present invention includes an injection tube 1 and a piston 2 installed in the injection tube;

[0019] The injection tube 1 is printed with a scale for marking the fluid capacity in the tube, the right part of the outer wall of the injection tube is fixed with a hook handle 4, and the left end of the injection tube shrinks radially to form an injection port 11;

[0020] A core rod 3 is fixed on the piston 2, and the co...

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Abstract

The invention discloses a safety syringe, and relates to the technical field of medical equipment, solving the technical problem of avoiding the access of bubbles into coronary arteries. The syringe comprises an injection pipe, and a piston mounted in the injection pipe, wherein a left end pipe opening of the injection pipe narrows in the radial direction to form an injection opening; the piston is fixed to core rods, the core rods extend to the right to the outside of the injection pipe; the safety syringe is characterized in that the left end surface of the piston is concave to the right. The safety syringe is applicable to coronary angiography, coronary angioplasty and other surgical injection agents.

Description

technical field [0001] The invention relates to medical equipment technology, in particular to a safety syringe technology. Background technique [0002] The harm of coronary heart disease to human health is becoming more and more serious, and its incidence rate continues to rise; coronary angiography is the gold standard for diagnosis of coronary heart disease, and coronary angioplasty is the main method for treating coronary heart disease. During coronary angiography and coronary angioplasty, it is essential to inject contrast medium with a syringe. [0003] During the operation, air bubbles will inevitably appear in the syringe due to steps such as back pumping and exhausting. If the air bubbles are injected into the coronary artery following the contrast agent, it will cause air embolism and cause disastrous consequences. Currently, the commonly used method to avoid air embolism For the down-dipping injection method, when there are many air bubbles, remove the syringe a...

Claims

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Application Information

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IPC IPC(8): A61M5/178A61M5/315A61M5/36
CPCA61M5/007A61M5/178A61M5/31511A61M5/36
Inventor 文为李继敏
Owner SHANGHAI EAST HOSPITAL
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