Visible blood return needle
By designing separate venous puncture needle seats and rubber plug puncture needle seats in the visible blood return needle, and using a semi-split structure and Luer connector for connection, the problems of difficult observation of patients with weak blood pressure and poor welding are solved, achieving high accuracy and reliability.
Patent Information
- Application Number
- CN202422943189.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-29
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2034-11-29
AI Technical Summary
Existing visible blood return needles are difficult to observe when dealing with critically ill elderly patients with low blood pressure, and the welded joints are prone to poor sealing.
The design features separate venous puncture needle hubs and rubber stopper puncture needle hubs. The tail end of the venous puncture needle has a semi-split structure and is connected using a Luer connector. The transparent observation cavity provides a direct flow path for blood, ensuring smooth blood flow.
It improves the accuracy and success rate of needle insertion into veins, avoids errors in detection results, and ensures sealing and connection reliability.
Smart Images
Figure CN223667949U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to medical instrument technical field especially, relates to a visible blood return needle. BACKGROUND
[0002] Visible blood return needle is an important blood collection tool in the medical field, its design aims at improving the accuracy and safety of blood collection operation, reducing the pain of patients, compared with traditional blood collection needle, visible blood return needle through the intuitive blood return display function, so that the operator can quickly judge whether the puncture blood vessel is successful, thereby effectively avoiding the fuzzy subjective judgment of relying on feeling, significantly improve the work efficiency and blood collection success rate.
[0003] The working principle of visible blood return needle is relatively simple but very practical: when the needle head successfully pierces into the vein blood vessel, blood will flow into the observation cavity in the needle tube quickly, since the observation cavity is designed to be transparent or translucent, the operator can clearly see the blood inflow process, namely the so-called "blood return" phenomenon, which not only provides clear operation feedback for the operator, but also reduces the pain caused to patients by repeated puncture.
[0004] However, the existing visible blood return needle is not perfect: first, when facing critically ill old people with weak blood pressure, since the blood pressure of critically ill old people is low, blood flow is relatively slow, the traditional visible blood return needle is not easy to directly observe the blood return phenomenon, and it is difficult to accurately judge whether the needle head has been successfully inserted into the vein; secondly, the blood flow in the observation cavity is not smooth, and the oscillation and rotation of the collected blood in the observation cavity lead to a large number of red blood cell destruction, causing hemolysis or coagulation factor activity decrease, thereby causing errors in the final blood test results; finally, in the manufacturing process of the through-needle type visible blood return needle, welding technology is often used to connect the needle tube with other parts, and the welding part is prone to problems such as poor welding and poor sealing. SUMMARY
[0005] To solve the above problems, the application provides a visible blood return needle, which is provided with a vein puncture needle seat and a rubber plug puncture needle seat, the vein puncture needle seat is provided with a vein puncture needle, the rubber plug puncture needle seat is provided with a rubber plug puncture needle, the vein puncture needle seat and the rubber plug puncture needle seat are separately provided, the vein puncture needle seat and the rubber plug puncture needle seat jointly enclose a transparent observation cavity, and the tail end of the vein puncture needle is in a half-section structure along the axial direction thereof.
[0006] In one embodiment, the vein puncture needle seat and the rubber plug puncture needle seat are made of transparent plastic material.
[0007] In one embodiment, the vein puncture needle seat and the rubber plug puncture needle seat are connected in a luer joint manner.
[0008] In one embodiment, the length of the tail end half-split structure of the venipuncture needle is 2-5 mm.
[0009] In one embodiment, a sheath is arranged on the venipuncture needle seat and the rubber plug puncture needle seat.
[0010] In one embodiment, a convex rib is arranged on the venipuncture needle seat, and a groove is correspondingly arranged on the inner wall of the sheath.
[0011] In one embodiment, the length of the tail end half-split structure of the venipuncture needle is 3 mm.
[0012] The visible blood return needle has the following beneficial effects:
[0013] The visible blood return needle has the following beneficial effects:
[0014] The visible blood return needle has the following beneficial effects: BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 is a front view of the visible blood return needle;
[0016] Figure 2 is Figure 1 A-A sectional view;
[0017] Figure 3 is a structural schematic view of the visible blood return needle;
[0018] SYMBOL DESCRIPTIONS IN DRAWINGS
[0019] 1, venipuncture needle seat; 11, venipuncture needle; 12, convex rib;
[0020] 2, rubber plug puncture needle seat; 21, rubber plug puncture needle;
[0021] 3, transparent observation cavity;
[0022] 4, sheath. DETAILED DESCRIPTION
[0023] In order to make the technical problems to be solved by the present application, technical solutions and beneficial effects clearer, the present application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.
[0024] It should be noted that the terms "first", "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.
[0025] As shown in Figure 1 , 2 A visible backflow needle is provided with a venous puncture needle seat 1 and a rubber plug puncture needle seat 2, the venous puncture needle seat 1 is provided with a venous puncture needle 11, the rubber plug puncture needle seat 2 is provided with a rubber plug puncture needle 21, the venous puncture needle seat 1 and the rubber plug puncture needle seat 2 are separately provided, the venous puncture needle seat 1 and the rubber plug puncture needle seat 2 jointly form a transparent observation cavity 3, and the tail end of the venous puncture needle 11 is in a half-section structure along the axial direction thereof.
[0026] Specifically, the visible blood return needle is composed of a venipuncture needle seat 1, a rubber plug puncture needle seat 2, and a transparent observation cavity 3 formed by the two. The venipuncture needle seat 1 and the rubber plug puncture needle seat 2 are made of transparent plastic material. When performing venipuncture, the medical staff uses a venipuncture needle 11 to pierce the patient's vein. Since the tail end of the venipuncture needle 11 is in a half-split structure along its axial direction, when the blood reaches this area, part of it will seep out of the gap or form a clear red mark. This allows the medical staff to determine whether the needle has accurately entered the vein by observing whether blood seeps out or forms a red mark on the half-split structure of the tail end of the venipuncture needle 11, even when dealing with critically ill elderly people with weak blood pressure. After the venipuncture needle 11 successfully pierces the vein, the blood enters the transparent observation cavity 3 through the venipuncture needle 11. The design of the transparent observation cavity 3 allows the medical staff to directly observe the blood flow, thereby further confirming whether the venipuncture is successful. The blood continues to flow from the transparent observation cavity 3 to the rubber plug puncture needle 21 and finally to blood transfusion, blood collection, and other medical equipment. By providing a half-split structure at the tail end of the venipuncture needle 11 along its axial direction, the medical staff can clearly observe whether blood flows out of the venipuncture needle 11 when the needle is inserted. Even when dealing with critically ill elderly people with weak blood pressure, the medical staff can confirm whether the needle has accurately entered the vein by observing whether blood seeps out or forms a red mark on the half-split structure of the tail end, thereby improving the accuracy and success rate of needle insertion. Since the venipuncture needle seat 1 and the rubber plug puncture needle seat 2 are separately arranged, they provide a direct flow path for blood by being connected to the transparent observation cavity 3, ensuring that the blood can enter the rubber plug puncture needle 21 normally and smoothly, and avoiding errors in test results caused by blood swirling and breaking.
[0027] As shown in Figure 1 , 2 , the venipuncture needle seat 1 and the rubber plug puncture needle seat 2 are connected by a luer joint.
[0028] Specifically, connecting the venipuncture needle seat 1 and the rubber plug puncture needle seat 2 by a luer joint has excellent connection reliability and sealing performance, which can avoid the problems of poor welding and poor sealing caused by traditional welding methods. The design of the luer joint makes the connection between the venipuncture needle seat 1 and the rubber plug puncture needle seat 2 simple and fast, and the medical staff can easily assemble them together.
[0029] As shown in Figure 2 , the length of the half-split structure at the tail end of the venipuncture needle 11 is 2-5 mm.
[0030] Specifically, the semi-split structure of the tail end of the venous puncture needle 11 enables a clear red mark to be formed when blood flows out. When a medical worker is performing venous puncture, the medical worker can determine whether the needle has successfully penetrated the vein by observing the red mark. By setting the length of the semi-split structure to 2-5 mm, sufficient space can be ensured to form the red mark, thereby improving the visual observation effect.
[0031] As shown in Figure 3 , the venous puncture needle seat 1 and the rubber plug puncture needle seat 2 are both provided with a sheath 4.
[0032] Specifically, the needle on the venous puncture needle seat 1 and the rubber plug puncture needle seat 2 can be tightly wrapped by the sheath 4 when not in use, effectively preventing the risk of injury caused by the exposure of the needle. Not only does this protect the safety of medical workers during operation, but it also prevents dust, dirt, and other contaminants from entering the needle, thereby maintaining the cleanliness and sterility of the needle.
[0033] As shown in Figure 1 , 3 , the venous puncture needle seat 1 is provided with a protrusion 12, and the inner wall of the sheath 4 is correspondingly provided with a groove.
[0034] Specifically, when the sheath 4 is fitted on the venous puncture needle seat 1, the protrusion 12 will be embedded in the groove, thereby effectively preventing the sheath 4 from inadvertently falling off or loosening, forming a tight locking mechanism. In addition, when performing venous puncture, medical workers can stably hold the puncture needle seat to ensure the accuracy and safety of the operation.
[0035] Compared with the prior art, the application has the following beneficial effects:
[0036] The visible blood return needle is provided with a venipuncture needle seat 1 and a rubber plug puncture needle seat 2, the venipuncture needle seat 1 is provided with a venipuncture needle 11, the rubber plug puncture needle seat 2 is provided with a rubber plug puncture needle 21, the tail end of the venipuncture needle 11 is in a half-section structure along the axial direction thereof, the visible blood return needle is composed of the venipuncture needle seat 1, the rubber plug puncture needle seat 2 and a transparent observation cavity 3 surrounded by the two, by arranging the half-section structure at the tail end of the venipuncture needle 11 along the axial direction thereof, medical staff can clearly observe whether blood flows out of the venipuncture needle 11 when puncturing, even for a critically ill old person with weak blood pressure, blood seepage or red marks can be observed at the tail end of the half-section structure, whether the venipuncture is accurate or not can be confirmed, and the accuracy and success rate of puncturing are improved; since the venipuncture needle seat 1 and the rubber plug puncture needle seat 2 are separately arranged, by arranging the venipuncture needle seat 1, the rubber plug puncture needle seat 2 and the transparent observation cavity 3, a direct flow path is provided for blood, and it is ensured that blood can normally and smoothly enter the rubber plug puncture needle 21, and detection errors caused by blood rotation and fragmentation are avoided.
[0037] By connecting the venipuncture end needle seat 1 and the rubber plug puncture end needle seat 2 in the form of a luer joint, excellent connection reliability and sealing performance are achieved, and the problems of poor welding and poor sealing caused by traditional welding can be avoided.
[0038] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.
[0039] In the description of the utility model, it should be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connection" and "connection" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected, it can be mechanical connection, or electrical connection, it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
Claims
1. A visible blood return needle, provided with a venipuncture needle seat (1) and a rubber plug puncture needle seat (2), the venipuncture needle seat (1) is provided with a venipuncture needle (11), the rubber plug puncture needle seat (2) is provided with a rubber plug puncture needle (21), the venipuncture needle seat (1) and the rubber plug puncture needle seat (2) are provided separately, and the venipuncture needle seat (1) and the rubber plug puncture needle seat (2) jointly enclose a transparent observation cavity (3), characterized in that, The tail end of the venous puncture needle (11) is in a half-split structure along the axial direction thereof.
2. The visible blood return needle of claim 1, wherein, The venous puncture needle seat (1) and the rubber plug puncture needle seat (2) are made of transparent plastic material.
3. The visible blood return needle of claim 1, wherein, The venous puncture needle seat (1) and the rubber plug puncture needle seat (2) are connected by a luer joint.
4. The visible blood return needle of claim 1, wherein, The length of the half-split structure of the tail end of the venous puncture needle (11) is 2-5 mm.
5. The visible blood return needle of claim 1, wherein, The venous puncture needle seat (1) and the rubber plug puncture needle seat (2) are provided with a sheath (4).
6. The visible blood return needle of claim 5, wherein, The venous puncture needle seat (1) is provided with a convex rib (12), and the inner wall of the sheath (4) is correspondingly provided with a groove.
7. The visible blood return needle of claim 4, wherein, The length of the half-split structure of the tail end of the venous puncture needle (11) is 3 mm.