An arterial blood sampling device

Abstract

The invention discloses an arterial blood collection device, comprising a needle, a pressurizing part and a drawing part, the end of the pressurizing part is provided with a Luer joint, and one end of the needle is connected to the Luer joint through a soft leather tube, One end is a metal puncture head; the pressurizing part includes a housing and an inner conversion tube, a through hole is arranged inside the housing, the inner conversion tube is arranged in the through hole, and the inner conversion tube is arranged in the side wall of the housing There is a first chamber, and the first chamber divides the side wall of the housing into an inner wall and an outer wall; in the practical process of the present invention, the position of the inner transition tube can be adjusted by using the extractor, and then the pressure member can be changed status. It can draw blood, and it can also be temporarily placed under positive pressure to prevent blood from flowing out.

Description

technical field [0001] The invention relates to the technical field of medical equipment, in particular to an arterial blood sampling device. Background technique [0002] In children's hospitals, arterial blood collection for pediatric patients is one of the commonly used nursing operations in clinical work. The hospital needs to confirm the patient's physical condition based on the collected blood samples, and determine the next treatment plan based on the data of the blood samples. At present, critically ill patients, Invasive arterial blood pressure monitoring will be performed on mechanically ventilated patients and patients with unstable hemodynamics. Radial artery catheterization is often selected for arterial catheterization in such patients, and a pressure bag is usually used to pump the configured dilute heparin into the artery. In order to prevent blood backflow and blockage of the catheter, the conventional method for blood collection from the radial artery of th...

AI Technical Summary

Problems solved by technology

[0002] In children's hospitals, arterial blood collection for pediatric patients is one of the commonly used nursing operations in clinical work. The hospital needs to confirm the patient's physical condition based on the collected blood samples, and determine the next treatment plan based on the data of the blood samples. At present, critically ill patients, Invasive arterial blood pressure monitoring will be performed on mechanically ventilated patients and patients with unstable hemodynamics. Radial artery catheterization is often selected for arterial catheterization in such patients, and a pressure bag is usually used to pump the configured dilute heparin into the artery. In order to prevent blood backflow and blockage of the catheter, the conventional method for blood collection from the radial artery of this type of patients is to clamp the indwelling needle (ie, arterial catheter) first, disconnect the arterial pressure measuring device, and draw a part of it with a syringe. When the blood comes out, take out the heparin and part of the blood in the arterial catheter, and then change a syringe to start the formal blood collection. The patient needs to puncture at least twice for each blood collection. Frequent puncture of the artery may easily cause infection at the puncture site and local hematoma , arterial thromboembolism and even pseudoaneurysm and other complications, and for patients who are seriously ill and hospitalized in the hospital, arterial blood sampling is basically required every day to draw blood samples for analysis. Obviously, it is not appropriate to collect blood in this way every time. In addition to the analysis, the blood pressure will be monitored. However, the current methods are relatively traditional. They are all recorded after the pressure is measured by a non-invasive manometer. It is easy to increase the pain of the patient when the patient is on a drip. On the one hand, it cannot real-time Dynamic monitoring of the patient's blood pressure status, on the other hand, the measured data is greatly affected by the outside world and the patient itself and may not be accurate

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