Pressure trigger automatic contrast device

Abstract

The invention provides a pressure trigger automatic contrast device which comprises a medical tee, a first syringe, a second syringe, an infusion needle, a first automatic pushing and injecting mechanism, a second automatic pushing and injecting mechanism, a blowing detection device and a control device. The first syringe, the second syringe and the infusion needle are connected through the medical tee, passage modes are adjusted, the infusion needle is connected with a needle retained on a hand of a patient, the controller controls the first automatic pushing and injecting mechanism and the second automatic pushing and injecting mechanism to drive the first syringe and the second syringe to push and inject air and normal saline pumped into the first syringe and the second syringe each other, so that uniform contrast bubbles are formed, the patient performs Valsalva action and blows the blowing detection device, a trigger control device controls the first automatic pushing and injecting mechanism to drive the first syringe to stably inject oscillated contrast bubbles into a human body after the blowing detection device detects that the air pressure reaches 40mmHg, and automation ofthe device is achieved.

Description

technical field [0001] The invention relates to the technical field of medical equipment, in particular to a pressure-triggered automatic imaging device. Background technique [0002] At present, conventional echocardiography has been widely used in cardiovascular diagnosis, but its sensitivity is low when showing a small amount of right-to-left shunt, and it is easy to ignore the related diseases of right-to-left shunt, such as patent foramen ovale and pulmonary arteriovenous Fistula, etc. The right heart echocardiography can use the oscillating normal saline injected in the peripheral venous system of the patient. On the basis of conventional echocardiography, the following two principles are used: 1) The contrast agent bubbles are > 10 microns, with an average of about 15 microns, and cannot pass through the lungs. The capillary network cannot enter the left heart system; 2) There is an obvious difference in acoustic impedance between microbubbles and blood, even indi...

AI Technical Summary

Problems solved by technology

However, there are many shortcomings in this operation: 1) The alternate push of the syringe is greatly hindered, which may easily lead to fatigue of the hands of medical staff, especially when multiple injections or a large number of patients are used, the formation of contrast agent microbubbles is not up to standard, which affects the judgment of the diagnostic conclusion; 2) Different medical staff have different operating techniques, especially female medical staff with weak hand strength, prone to fatigue, unstable grip of the syringe, easy to cause the syringe to fall off or the formation of microbubbles of the contrast agent is not up to standard; 3) due to the difference in operator proficiency , there is a difference in injection speed, and it is impossible to achieve standardized and stable operation; 4) During the peak period of medical treatment, due to the shortage of medical staff, the operation of acoustic contrast imaging is cumbersome, which seriously affects the detection efficiency and delays the time for patients to see a doctor

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