CN201668768U - a phlebotomy - Google Patents

Abstract

A phlebotomy device comprises a needle (10), a delivery catheter (20) and a joint (30) connected between the needle and the delivery catheter, and the internal diameter of the needle is 1.5-2mm. Further, a flow regulator (50) is provided on the delivery catheter, and the phlebotomy device also includes a container (60) with volume scales for containing the discharged blood. The simple and convenient structure is to cut off the filter part of the existing blood transfusion set, the end of the flow regulator (50) is externally connected to the discarded infusion bottle, and the end of the joint is connected to an intravenous indwelling needle. The phlebotomy device is simple in structure, convenient to use, economical, effective and low in cost, and benefits both patients and clinics, and can be operated by nurses without the need for specialized personnel in the blood transfusion department.

Description

a phlebotomy

technical field

The utility model relates to a medical device, in particular to a phlebotomy device.

Background technique

Polycythemia vera is a hematological disease. The main pathophysiological basis of clinical manifestations is an increase in the total volume of blood (red blood cells) and increased blood viscosity, which leads to slow blood flow in various organs of the body and tissue ischemia. In the early stage, symptoms similar to neurosis such as headache, dizziness, fatigue, tinnitus, vertigo, and forgetfulness may appear. Among the complications, hemorrhage, thrombosis and embolism are the most common and often the main cause of death. If the disease is treated with drugs, the onset of action is slow and the effect is poor. Phlebotomy is the mainstay of treatment for polycythemia vera. The purpose of treatment is to make the blood volume and red blood cell volume close to normal as soon as possible, and inhibit the hematopoietic function of the bone marrow, so as to alleviate the disease and reduce complications. If there are no serious complications, the course of the disease develops slowly, and the patient can survive for more than 10-15 years. Phlebotomy in the prior art is to rely on the blood transfusion department to extract the venous blood with a special blood donation collection bag, mainly relying on a blood bag with a vacuum to extract the venous blood. The maximum capacity of each blood donation collection bag is 350ml, without scale, when donating blood, use a scale to place it under the blood draw bag, while clinical blood donation bags are mainly based on estimated weight, generally between 200-400ml for each bloodletting Because there is no scale, the accuracy of bloodletting volume is low; and there is no regulator to control the speed of bloodletting, usually the blood bag is filled in 3-5 minutes, leading to adverse reactions. The blood transfusion department uses the blood collection vacuum bag to let the blood out, and its specialized technical personnel are required to go to the clinical operation. In addition, the cost of this blood donation collection bag is relatively high, which increases the treatment cost of the patient.

Contents of the invention

The technical problem to be solved by the utility model is to provide a phlebotomy device which is easy to operate, economical, effective and low in cost.

In order to solve the above technical problems, the utility model provides a phlebotomy device, which is characterized in that it includes a needle, a delivery catheter and a joint connected between the needle and the delivery catheter, and the inner diameter of the needle is 1.5-2mm .

The outer diameter of the tube diameter of the needle is 2.0-2.2mm.

The needle is an intravenous indwelling needle.

The needle is a large puncture needle or a large blood collection needle.

A needle sheath with a joint is detachably sheathed on the outside of the needle.

The delivery conduit is also provided with a flow regulator.

The phlebotomy also includes a graduated container for receiving blood from the delivery catheter.

The container with volume scale is a discarded infusion bottle.

The length of the delivery catheter is greater than or equal to 80cm.

The length of the delivery catheter is 80-100cm.

The venous bloodletting device of the utility model has a simple structure, and the filter part of the existing blood transfusion device is cut off, and the end of the flow regulator is externally connected to a discarded infusion bottle, and the end of the joint is connected to a venous indwelling needle. The bloodletting method is simple, fast, convenient, economical, effective, and low in cost, benefiting both the patient and the clinic. Furthermore, the delivery catheter is equipped with a flow regulator to control the bloodletting speed, which can control the bloodletting time to reach the bloodletting volume in 15-20 minutes, greatly reducing the adverse reactions caused by too fast bloodletting, and the container with capacity scale is used to accept the bloodletting blood, can accurately control the amount of bloodletting.

The venous bloodletting device of the utility model has been used for 24 cases of bloodletting on clinical trials, compared with 20 cases of patients with vacuum venous blood collection bag bloodletting, and compared the accuracy of bloodletting and the practicality and safety of clinical use of the two kinds of bloodletting equipment. The result is that : The bloodletting accuracy of this venous bloodletting device is 100%, and the bloodletting accuracy of the control group's blood donation collection bag is 0%; using this venous bloodletting device for bloodletting, no adverse reaction occurs in one case, while bloodletting with a blood donation collection bag has 15 adverse reactions %. The phlebotomy device of the utility model can be operated by nurses, without the need of specialized personnel in the blood transfusion department.

Description of drawings

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

Fig. 1 is a three-dimensional schematic diagram of the phlebotomy device of the present invention.

Fig. 2 is a three-dimensional exploded schematic view of some components of the phlebotomy device of the present invention.

Fig. 3 is a schematic diagram of another usage state of the phlebotomy device of the present invention.

Detailed ways

Shown in Fig. 1-3 is the preferred phlebotomy of the present utility model, is made up of needle 10, delivery catheter 20, connector 30, needle sheath 40, flow regulator 50 and the container 60 with capacity scale. The simple structure is to cut off the filtering part of the existing blood transfusion set, connect the discarded infusion bottle to the end of the flow regulator 50, and connect an intravenous indwelling needle to the end of the joint.

The needle 10 is preferably a PICC venous indwelling needle shown in the figure, and a large puncture needle or a large blood collection needle can also be used. The requirement for the needle is that the inner diameter of the needle is 1.5-2mm, because it is not easy to bleed if the inner diameter is too small If it is successful, if the inner diameter is too large, the wound surface of the blood vessel will be large and the patient's pain will be aggravated. The outer diameter of the needle can be 2.0-2.2mm. The needle 10 is detachably sheathed with a needle sheath 40 with a joint (refer to Fig. 1 and Fig. 2, same as the prior art), if a larger flow rate is required during bloodletting, the needle can be pulled out from the needle sheath After that, it is directly connected to the connector with the needle sheath, and the state is shown in Figure 3.

The joint 30 is connected between the needle 10 and the delivery catheter 20, and the delivery catheter 20 can be a catheter with the specifications of an ordinary blood transfusion set. The delivery catheter is also provided with a flow regulator 50, so that the bloodletting speed can be controlled and the bloodletting can be avoided. Discomfort caused by going too fast. The phlebotomy device also includes a container 60 with volume scale that can receive the blood discharged from the delivery catheter, so that the amount of bloodletting can be accurately observed, and discarded infusion bottles can be used in practical applications.

This bloodletting device utilizes pressure difference to carry out bloodletting, and that end of the needle needs to be 80-100cm higher than the infusion bottle, so, the length of the delivery catheter 20 is greater than or equal to 80cm, preferably 80-100cm, and during the bloodletting operation, the The infusion bottle is placed on the ground, and the bed can be raised slightly to bleed out.

Claims (10)

1. A phlebotomy device, characterized in that it comprises a needle (10), a delivery catheter (20) and a joint (30) communicated between the needle and the delivery catheter, and the internal diameter of the needle is 1.5- 2mm. 2. The phlebotomy according to claim 1, characterized in that the outer diameter of the needle (10) is 2.0-2.2mm. 3. The phlebotomy according to claim 1, characterized in that the needle (10) is a venous indwelling needle. 4. The phlebotomy according to claim 1, characterized in that the needle (10) is a large puncture needle or a large blood collection needle. 5. The phlebotomy device according to claim 1, characterized in that, the needle (10) is detachably sheathed with a needle sheath (40) with a joint. 6. The phlebotomy according to claim 1, characterized in that a flow regulator (50) is further provided on the delivery catheter. 7. The phlebotomy according to claim 1, characterized in that the phlebotomy further comprises a volume-scaled container (60) capable of receiving the blood discharged from the delivery catheter. 8. The phlebotomy device according to claim 7, characterized in that, the container (60) with volume scale is a discarded infusion bottle. 9. The phlebotomy according to any one of claims 1-8, characterized in that the length of the delivery catheter (20) is greater than or equal to 80 cm. 10. The phlebotomy according to claim 9, characterized in that, the length of the delivery catheter (20) is 80-100 cm.

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