Monotubular double-chamber syringe needle cylinder and injection method thereof

Abstract

The invention provides a single-cylinder double-chamber injector needle cylinder; the needle cylinder is provided with two pistons which divide the needle cylinder into a front chamber and a back chamber; the two pistons are connected with each other by a flexible connecting piece; the front chamber piston is provided with a through hole and a sealing device, thus realizing double drug administration of CT and MR contrast agent and physiological saline; remaining contrast agent in the cylinder is injected into human body by a physiological saline washing pipe and enters vein after being driven, so that the contrast agent reaches the target organ rapidly, thus increasing contrast of pathological changes with surrounding tissues and improving checkout of the pathological changes; meanwhile, blood supply information of nidus is increased, which facilitates diagnosis and differential diagnosis and increases certainty factor of diagnosis by the doctors; when CT and MR angiogram is carried out, contrast between the blood vessel and surrounding tissues is increased, which improves the angiogram effect; perfusion imaging is carried out on CT and MR, so that the contrast agent which enters the targeted organ has more constant rate and more accurate data is obtained; on the basis, more abundant information is expected to be obtained with the same amount of contrast agent used or the use amount of the contrast agent is expected to be reduced.

Description

technical field [0001] The invention relates to the field of medical syringes, in particular to a single-tube double-chamber syringe and an injection method thereof. Background technique [0002] At present, CT and MR examinations require venous bolus injection of contrast agent, which can enhance the scan and improve the detection of lesions and assist in qualitative diagnosis. At the same time, continuous scanning at the same level after venous bolus injection of contrast agent can obtain lesion or / and organ perfusion information. That is, CT and MR perfusion imaging, and non-invasive CT and MR angiography can also be performed. Both conventional contrast-enhanced scans, perfusion imaging, and CT and MR angiography require contrast agents to enter the blood circulation of the human body at a certain rate and amount. Quantity requirements are more stringent. At present, it is mainly realized clinically through automatic injectors, and the drug delivery rate is usually 3-5...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a low-cost and environmentally friendly single-barrel double-chamber syringe syringe for the problems that the syringes in the prior art bring economic burden to patients and waste resources.

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