Invasive blood pressure measuring device provided with by-pass water bag

Abstract

The invention provides an invasive blood pressure measuring device provided with a by-pass water bag. The device is characterized by comprising an arterial catheter, a flushing tube, a pressure measuring transducer, a main through tube, the water bag, a blood collection connecting tube and a second three-way valve, wherein the arterial catheter is communicated with one end of the main through tubethrough the blood collection connecting tube, the other end of the main through tube is communicated with the flushing tube through the second three-way valve, one end of the water bag is communicated with the main through tube through a first by-pass tube, the other end of the water bag is connected with one end of a second by-pass tube, and the other end of the second by-pass tube is connectedto a port of the second three-way valve. The invasive blood pressure measuring device has the advantages that by squeezing the water bag, original saline in the water bag is injected into the body ofa patient, after the water bag is released, the blood of the patient can enter the arterial catheter and the blood collection connecting tube, and at this time, the blood is simply extracted through the blood collection connecting tube, so that the problems are solved that when an existing invasive blood pressure measuring device is utilized, the operation steps are cumbersome, operation errors occur easily, and the patient is easily cross-infected; the beneficial effect is remarkable, and the device is suitable for application and popularization.

Description

technical field [0001] The present invention relates to an invasive blood pressure measuring device, more specifically, to an invasive blood pressure measuring device which is provided with a bypass water bladder and can conveniently draw blood from a patient. Background technique [0002] Invasive blood pressure can timely and accurately reflect the patient's blood pressure changes. Critical patients usually use invasive blood pressure monitoring, and arterial invasive blood pressure measurement is a commonly used form. The invasive blood pressure measurement device usually consists of an arterial catheter, a flushing tube, a three-way valve and a pressure transducer. The front end of the arterial catheter is inserted into the patient's artery and connected to the pressure transducer through the flushing tube. A three-way valve is arranged at the connection, and the pressure measurement transducer converts the arterial pressure signal into an electrical signal and outputs i...

AI Technical Summary

Problems solved by technology

[0003] Critically ill patients need more frequent blood tests. The method used is to use an empty needle to draw blood at the three-way valve. During the process of drawing blood, it is necessary to use two empty needles and switch the on-off state of the three-way valve multiple times. First, Use the three-way valve to shut off the communication between the arterial catheter and the flushing tube, then use an empty needle to pump out the heparin saline in the arterial catheter, then close the external tube of the three-way valve, and then connect another empty needle, Then use the three-way valve to open the external tube to draw blood; after the blood is drawn, close the external tube, connect the first empty needle, and inject the mixture containing heparin saline and blood drawn by the first empty needle into the In the patient's body, the three-way valve is used to connect the arterial catheter and the flushing tube. Not only the operation steps are very cumbersome, but the operator's slight negligence may cause blood to flow out of the three-way valve, and it is very easy to damage the three-way valve. Contamination increases the chances of cross-infection and illness among patients

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