CN211024530U - Nondestructive puncture needle head of blood transfusion device - Google Patents

Abstract

The utility model belongs to the technical field of blood transfusion device, more specifically relates to a blood transfusion ware puncture needle of not damaged. Including pipe, hand protector, limit structure, leading-in structure and the syringe needle that switches on according to the preface, the syringe needle includes puncture portion and water conservancy diversion portion, water conservancy diversion portion is equipped with the water conservancy diversion hole, and with leading-in structural connection, the flat structure of puncture portion for keeping away from leading-in structure, just the edge of flat structure is the arc. The edge is curved flat structure puncture needle can insert the blood transfusion bag easily and connect, but can not puncture the blood transfusion bag to can ensure blood safety, accomplish patient's blood transfusion treatment smoothly, the clinical use of being convenient for, the arc edge of flat structure can avoid impaling the blood transfusion bag and stabbing the nurse simultaneously, has improved the safety in utilization of the blood transfusion ware puncture needle of not damaged.

Description

A non-invasive blood transfusion puncture needle

technical field

The utility model belongs to the technical field of blood transfusion devices, and more particularly relates to a puncture needle for a blood transfusion device without damage.

Background technique

Blood transfusion is a treatment method in which blood is infused into a patient through an intravenous line, and is widely used in clinical practice. The current routine clinical indirect venous blood transfusion operation is: hang the blood transfusion bag on the infusion stand, puncture the plastic side hole needle of the blood transfusion device from the bottom to the top, there is a concentrated breakthrough force when the needle of the blood transfusion device is pierced, and the needle tip rises rapidly. It is fast, and the blood transfusion bag is in a fixed state after hanging, and the strength and direction are not easy to control. The current puncture needles for blood transfusion bags are slender and sharp plastic needles (as shown in Figure 1). Since the puncture force and direction are not easy to grasp, the following problems may exist:

1. During use, the blood transfusion bag is likely to be punctured due to the operator's personal experience, environment and other factors, which will lead to blood contamination, so that the patient cannot receive timely treatment, and the timing of treatment is delayed.

2. Sharp puncture needles can also easily stab nurses and cause medical damage. If blood leakage occurs from puncturing the blood transfusion bag, it is easy to cause psychological dissatisfaction of patients and their families and even lead to medical disputes. All of the above situations are likely to cause economic losses and psychological shadows to the nurses involved, as well as waste blood.

In response to the above problems, some hospitals have made regulations on blood transfusion operations in terms of management methods, such as placing the treatment plate on the treatment car, placing the blood transfusion bag flat in the treatment plate, higher than the venipuncture site, removing the protective cap, Pinch the outer wall of the tube with the index finger and thumb of the left hand, hold the needle with the right hand, and push the needle stem in a spiral along the plastic lumen. However, in this way, because the blood transfusion bag is placed flat, the space between the two layers of the blood transfusion bag becomes smaller. If the angle of the needle tip is not parallel to the angle of the connecting port when the needle is pierced, and the force is not properly controlled, the blood transfusion bag is still easy to be punctured. .

Utility model content

In view of the above problems existing in the background art, it is necessary to provide a non-invasive puncture needle for blood transfusion set, which should enable most professionally trained medical staff to puncture the puncture needle into the blood transfusion bag without puncturing the blood transfusion bag. The blood transfusion bag is broken, so as to greatly reduce the probability of medical malpractice that the blood transfusion bag is punctured and the timing of treatment is delayed.

In order to achieve the above purpose, the inventor provides an atraumatic puncture needle for a blood transfusion device, comprising a catheter, a hand guard, a limiting structure, an introduction structure and a needle that are connected in sequence, characterized in that the needle comprises a puncturing part and a needle. The guide part is provided with guide holes and is connected with the introduction structure; the puncture part is a flat structure away from the introduction structure, and the edge of the flat structure is arc-shaped.

Different from the prior art, the above technical solution at least has the following beneficial effects:

The puncture needle with a flat structure with an arc-shaped edge can be easily inserted into the blood transfusion bag connector, but will not puncture the blood transfusion bag, so as to ensure blood safety, successfully complete the patient's blood transfusion treatment, and facilitate clinical use. At the same time, the curved edge of the flat structure It can avoid puncturing the blood transfusion bag and puncturing the nurse, thereby improving the safety of using the puncture needle of the non-damaged blood transfusion apparatus.

Description of drawings

1 is a schematic diagram of a puncture needle for a blood transfusion apparatus described in the background;

2 is a side view of a non-invasive puncture needle for a blood transfusion device according to the specific embodiment;

3 is a front view of a non-invasive blood transfusion puncture needle according to the specific embodiment;

Fig. 4 is a side view of another non-invasive puncture needle for blood transfusion set according to the specific embodiment.

Description of reference numbers:

10, needle; 20, introduction structure; 30, limit structure; 40, handguard; 50, catheter; 101, puncture part; 102, diversion part; 1021, diversion hole.

Detailed ways

The following describes in detail a non-invasive puncture needle for a blood transfusion device provided by the present invention.

A non-invasive puncture needle for a blood transfusion device, comprising a catheter, a hand guard, a limiting structure, an introduction structure and a needle head that are connected in sequence, wherein the needle head comprises a puncture part and a diversion part, and the diversion part is provided with The guide hole is connected with the introduction structure, the puncture part is a flat structure away from the introduction structure, and the edge of the flat structure is arc-shaped.

The puncture needle of a blood transfusion set provided by the utility model has a catheter, a hand guard, a limiting structure, an introduction structure and a needle that are coaxial. The piercing part and the air guiding part of the pillow may be integrally formed or designed to be detachably connected, but an integrally formed design is preferred. The puncture part is different from the existing plastic spike shape, and is designed to be a flat structure with an arc-shaped edge, which reduces the pressure applied by the puncture part to a single point of the blood transfusion bag to a linear pressure. Under the condition that the hand strength of the trained and qualified technician is the same, the same force can only make the puncture part pierce the diaphragm of the blood transfusion bag, but can no longer pierce the blood transfusion bag from the inside to the outside, resulting in blood leakage or stab wounds Technical staff.

Further, the cross-sectional area of the puncture portion will affect the effective force applied by the technician during the blood transfusion operation, and the cross-sectional area of the puncture portion gradually decreases along the direction away from the introduction structure.

Further, for the convenience of operation, the outer diameters of the hand guard, the limiting structure, the introduction structure and the needle are successively reduced. Specifically, the outer diameters of the hand guard, the limiting structure, the introduction structure and the needle are not without size restrictions. The relevant requirements for blood transfusion technical indicators are set.

Further, in view of the thin and soft material of the blood transfusion bag currently used, and the connection parts are short, the thickness of the main body is 0.02cm, and the length of the connection port is about 2.8-3.5cm, therefore, the length of the needle along the puncture direction is designed to be 3-5cm.

Further, the length of the puncture portion along the puncture direction is 0.3-1 cm, and the length of the guide portion along the puncture direction is 2.7-4.7 cm. The puncture part in the present invention is a semi-ellipse. It can be understood that the smaller the radius of curvature, the smaller the pressure on the blood transfusion bag when the same force is applied; the greater the pressure. Correspondingly, when the length of the needle is constant, the shorter the length of the puncture part along the puncture direction, the larger the radius of curvature, and the longer the length of the diversion part; on the contrary, the longer the length of the puncture part along the puncture direction, the greater the curvature. The smaller the radius, the shorter the length of the deflector. However, if the length of the puncture part continues to lengthen along the puncture direction, the radius of curvature will be as small as that of a traditional puncture needle, which will lead to the accident of puncturing the blood transfusion bag, causing blood leakage and stabbing the medical staff.

As a further improvement of the present invention, the cross section of the puncture portion has a curved arc. This design further ensures that after passing through the connection port of the blood transfusion bag, when the hand pressure is transmitted to the inside of the blood transfusion bag through the puncture part, it is rapidly reduced, so as not to continue to pierce the blood transfusion bag to cause blood leakage.

In order to describe in detail the technical content, structural features, achieved objectives and effects of the technical solution, the following detailed description is given in conjunction with specific embodiments and accompanying drawings. It should be understood that these examples are only used to illustrate the present application and not to limit the scope of the present application.

The background technology shown in FIG. 1 provides a non-invasive puncture needle for blood transfusion set, including a catheter 50, a hand guard 40, a limiting structure 30, an introduction structure 20 and a needle 10 that are connected in sequence, and the needle 10 includes a puncture part 101 and a guide In the flow portion 102 , the flow guide portion 102 is provided with a flow guide hole 1021 and communicates with the introduction structure 20 .

Please refer to FIGS. 2 and 3 . FIG. 2 is a side view of a non-invasive puncture needle for a blood transfusion device according to a specific embodiment of the present invention, including a conduit 50 , a hand guard 40 , and a limiting structure 30 that are connected in sequence. , the introduction structure 20 and the needle 10, the needle 10 includes a puncture part 101 and a guide part 102, the guide part 102 is provided with a guide hole 1021, and conducts with the introduction structure 20, the puncture part 101 is a flat structure away from the introduction structure 20 . Fig. 3 shows a front view of the puncture needle for a non-invasive blood transfusion device according to this specific embodiment, and it can be seen from the figure that the edge of the flat structure is arc-shaped.

In a further improved embodiment, the cross-sectional area of the puncture portion of the puncture needle of the atraumatic blood transfusion device gradually decreases along the direction away from the introduction structure.

In a further improved embodiment, the outer diameters of the hand guard, the limiting structure, the introduction structure and the needle are successively reduced.

In a further improved embodiment, the length of the needle along the puncturing direction is 3-5 cm.

In a further improved embodiment, the length of the puncture portion along the puncture direction is 0.3-1 cm, and the length of the guide portion along the puncture direction is 2.7-4.7 cm.

Referring to FIG. 4 , in a further improved embodiment, the cross-section of the puncture portion has a curved arc. The curved arc is not specifically limited, but it is too curved to pass through during puncturing. The preferred curved arc is less than 30°.

When using the puncture needle of the non-damaged blood transfusion set provided by the utility model to work, first hang the blood transfusion bag on the transfusion stand, hold the connection port of the blood transfusion bag with the left hand, and hold the non-damaged blood transfusion bag with the index finger and the middle finger of the right hand with the thumb. puncture needle handguard, select the puncture position, and quickly puncture. It should be noted that, if a puncture needle with a further improved design is used (Fig. 4), it is preferable to align the curved part of the puncture needle (the arched position) rather than the needle tip to the connection port of the blood transfusion bag, and quickly puncture at the selected puncture position.

It should be noted that, although the above embodiments have been described herein, it does not limit the scope of the patent protection of the present invention. Therefore, based on the innovative concept of the present invention, changes and modifications to the embodiments described herein, or equivalent structures or equivalent process transformations made by using the contents of the description and accompanying drawings of the present invention, directly or indirectly apply the above technologies The application of the solution in other related technical fields is included in the protection scope of the patent for this utility model.

Claims (6)

1. The utility model provides a blood transfusion ware puncture syringe needle of not damaged, includes pipe, hand protector, limit structure, leading-in structure and the syringe needle of putting through according to the preface, its characterized in that, the syringe needle includes puncture portion and water conservancy diversion portion, water conservancy diversion portion is equipped with the water conservancy diversion hole, and with leading-in structural connection switches on, the flat structure of puncture portion for keeping away from leading-in structure, just the edge of flat structure is the arc.

2. The atraumatic blood transporter puncture needle of claim 1, wherein the cross-sectional area of the puncture portion decreases in a direction away from the introducer.

3. The atraumatic blood transfusion puncture needle of claim 1, wherein the outer diameters of the hand guard, the stop structure, the lead-in structure and the needle decrease in order.

4. The atraumatic blood transporter puncture needle of claim 1, wherein the length of the needle in the puncture direction is 3-5 cm.

5. The atraumatic blood transfusion puncture needle of claim 4, wherein the length of the puncture portion in the puncture direction is 0.3-1cm, and the length of the flow guide portion in the puncture direction is 2.7-4.7 cm.

6. The atraumatic blood transporter puncture needle of any of claims 1-5, wherein the puncture section has a curved curvature in cross-section.

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