CN205832254U - Change-blood bloodletting instrument - Google Patents

Abstract

The utility model discloses a blood-exchanging and blood-drawing device, which comprises an indwelling needle, a blood measuring device and an air suction pump. The indwelling needle communicates with the top of the blood measuring device through a blood transfusion vessel. The surface of the blood measuring device is provided with a scale for measuring blood. The bottom of the device is provided with a through hole, and the through hole is provided with a breathable and waterproof membrane, and the air suction pump communicates with the through hole through the air flow pipe. The blood exchange and blood drawing device with this structure can accurately measure the amount of blood drawn, greatly reducing medical risks.

Description

blood exchange device

technical field

The utility model relates to the field of medical equipment, in particular to a blood exchange and blood drawing device.

Background technique

Neonatal exchange transfusion therapy is to replace the plasma and blood cells in the patient's body with banked blood, and replace the pathological products in the blood to achieve the purpose of treatment. It is the most effective and rapid method for treating neonatal hyperbilirubinemia. It is mainly used for Hemolytic disease of the newborn with severe mother-to-fetal blood incompatibility is an important measure to save lives and reduce or avoid sequelae. This technology began in the 1950s. The classic method of blood exchange is to insert a single tube in the umbilical vein to complete the blood exchange alternately. However, because the pumping process cannot be carried out synchronously, the blood pressure of the child fluctuates strongly, which in turn affects the blood supply of various organs. balance. Therefore, at present, the method of synchronous peripheral arteriovenous blood exchange is often used in China, that is, blood transfusion from peripheral veins and blood withdrawal from peripheral arteries at the same time. It is difficult to accurately measure the amount of blood drawn, and there is a large medical risk.

Utility model content

In view of this, the purpose of the present utility model is to provide a blood-exchange and blood-drawing device, which can accurately measure the amount of blood drawn and reduce medical risks.

The utility model solves the above-mentioned problems through the following technical means: a blood exchange and blood drawing device, including an indwelling needle, a blood meter and an air suction pump, the indwelling needle communicates with the top of the blood meter through a blood transfusion vessel, and the surface of the blood meter is Scales are provided, a through hole is provided at the bottom of the blood meter, and a breathable and waterproof membrane is provided at the through hole, and the air suction pump communicates with the through hole through an airflow tube.

Further, the bottom of the blood meter is provided with a sump, and the blood meter communicates with the sump through a liquid leakage port, a pressure switch is provided at the leakage port, a sensor is arranged in the liquid sump, and it also includes A controller and an alarm, the sensor is electrically connected to the controller, and the alarm is also electrically connected to the controller.

Further, the outer casing of the indwelling needle is provided with a protective sheath.

Beneficial effects of the present utility model: the blood exchange and blood drawing device of the present utility model includes an indwelling needle, a blood measuring device and an air suction pump, the indwelling needle communicates with the top of the blood measuring device through a transfusion vessel, and the surface of the blood measuring device is provided with scale, the bottom of the blood meter is provided with a through hole, and the through hole is provided with a breathable and waterproof membrane, and the air suction pump communicates with the through hole through the airflow tube. The blood exchange and blood drawing device with this structure can accurately measure the amount of blood drawn, greatly reducing medical risks.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is described further.

Fig. 1 is the structural representation of the utility model.

detailed description

The utility model will be described in detail below in conjunction with the accompanying drawings, as shown in Figure 1: a blood exchange and blood drawing device, including an indwelling needle 1, a blood meter 2 and an air pump 3, and the indwelling needle passes through a blood transfusion vessel 4 and blood The top of the meter is connected, the surface of the blood meter is provided with a scale 5, the bottom of the blood meter is provided with a through hole 6, and the through hole is provided with a breathable and waterproof membrane 7, and the air suction pump passes through the airflow tube 8 and the through hole Connected, the indwelling needle is a newborn superficial artery indwelling needle, and a protective cover 15 is provided on the indwelling needle outer cover. First, it can avoid the indwelling needle needle from hurting people, and the other is to avoid the indwelling needle from being polluted. Just set it. When exchanging blood and drawing blood, the indwelling needle is punctured into the patient's artery, usually the cubital artery, and then the suction pump works to form a negative pressure in the transfusion vessel and the blood meter, so that the blood is drawn out, and the blood flows into the blood measurement after passing through the transfusion vessel The blood flow rate is controlled by the suction pump, and the blood pumping volume can be displayed intuitively and accurately through the scale set on the blood meter. In the blood exchange and blood drawing device with this structure, during the blood exchange and blood drawing process, the blood does not need to pass through the suction pump, but only needs to pass through a small section of blood transfusion vessel to directly enter the blood meter for measurement, which greatly improves the measurement accuracy of the blood pumping volume and reduces the blood pressure. medical risk.

As a further improvement to the above technical solution, a liquid collection tank 9 is provided at the bottom of the blood meter, and the blood meter communicates with the liquid collection tank through a liquid leakage port 10, and a pressure switch 11 is provided at the liquid leakage port. A sensor 12 is arranged in the liquid collection tank, and also includes a controller 13 and an alarm 14, the sensor is electrically connected to the controller, and the alarm is also electrically connected to the controller. When the blood in the blood meter reaches the set volume, that is, the pressure caused by the pressure switch reaches the set size, the pressure switch is turned on, and a small part of blood flows into the liquid collection tank. The sensor is a humidity sensor, and the sensor senses the blood humidity. The signal is transmitted to the controller, and the controller controls the alarm to alarm, reminding the medical staff to stop blood drawing in time, further reducing the medical risk.

Finally, it is noted that the above embodiments are only used to illustrate the technical solutions of the present utility model without limitation. Although the utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the utility model can be Modifications or equivalent replacements of the technical solutions without departing from the spirit and scope of the technical solutions of the utility model shall be covered by the claims of the utility model.

Claims (3)

1. a change-blood bloodletting instrument, it is characterised in that: include remaining needle, blood-pressure meters measuring device and asepwirator pump, described remaining needle Being connected with blood-pressure meters measuring device top by blood transfusion tube, described blood-pressure meters measuring device surface configuration has scale, sets bottom blood-pressure meters measuring device Being equipped with through hole, described through hole is provided with breathing waterproof film, and described asepwirator pump is connected with through hole by gas flow tube.

Change-blood bloodletting instrument the most according to claim 1, it is characterised in that: it is provided with liquid collecting bottom described blood-pressure meters measuring device Groove, blood-pressure meters measuring device is connected with collecting tank by leakage mouth, is provided with pressure switch, sets in described collecting tank at described leakage mouth Being equipped with sensor, also include that controller and alarm, described sensor are electrically connected with the controller, described alarm also has controller Electrical connection.

Change-blood bloodletting instrument the most according to claim 2, it is characterised in that: it is arranged with protection set outside described remaining needle.