Blood collector for medical testing

Abstract

The utility model provides a kind of blood collector for medical detection, including soft catheter, the front end of soft catheter is provided with connecting pipe, the connecting pipe is hard pipe, the front end of connecting pipe is provided with intravenous needle, the rear end of soft catheter is communicated with baffle, the rear end surface of baffle is provided with needle bolt, the needle bolt is equipped with tube plug puncture needle, the tube plug puncture needle and soft catheter are communicated. In the utility model, baffle is arranged between soft catheter and tube plug puncture needle, baffle separates tube plug puncture needle and the hand of operator, prevent from dripping blood of tube plug puncture needle to contaminate the hand of medical staff when soft catheter is replaced to bleed, simultaneously prevent from blood collection tube to contaminate the hand of medical staff due to sealing, blood leakage, to improve the blood safety of medical staff.

Description

Technical Field

[0001] This utility model belongs to the field of medical devices, and in particular relates to a blood collection device for medical testing. Background Technology

[0002] Blood collection devices typically consist of a flexible tube with a venous needle at the front and a puncture needle at the rear. During operation, medical personnel first use the venous needle to puncture a vein. Once blood is observed flowing into the tube, the venipuncture is successful. At this point, the medical personnel use the puncture needle to puncture the negative pressure collection tube, introducing blood into the collection tube. Before puncturing the negative pressure collection tube, a one-way valve is installed inside the flexible catheter to prevent blood from flowing out through the puncture needle, thus allowing medical personnel more time to perform the negative pressure collection procedure.

[0003] However, in practical applications, it has been found that the one-way valve dampens blood output. The negative pressure in the collection tube must overcome this damping before blood can be drawn in, affecting the efficiency of blood output. Furthermore, since the rate at which blood is expelled from the body varies from person to person and is related to factors such as blood pressure and blood viscosity, if the damping effect of the one-way valve on blood output is insufficient, blood dripping from the catheter plug needle sometimes occurs during blood collection when changing tubes. Because there is currently no isolation structure between the catheter plug needle and the soft catheter, the dripping blood can easily contaminate medical personnel, posing a safety hazard. Additionally, during blood collection, sometimes due to incomplete sealing of the negative pressure collection tube, blood leakage occurs, contaminating medical personnel and posing another safety hazard. Utility Model Content

[0004] In view of this, the present invention aims to provide a blood collection device for medical testing to improve the convenience and safety of blood collection operations.

[0005] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0006] A blood collection device for medical testing includes a flexible catheter, a connecting tube at the front end of the flexible catheter (the connecting tube is a rigid tube), a venous needle at the front end of the connecting tube, a baffle at the rear end of the flexible catheter, a needle plug at the rear end face of the baffle, and a tube plug puncture needle at the needle plug, which is connected to the flexible catheter.

[0007] Furthermore, the baffle is provided with a tube connector, the rear end of the flexible conduit is connected to the front port of the tube connector, and the needle plug is located at the rear port of the tube connector.

[0008] Furthermore, the connecting pipe is provided with fins.

[0009] Furthermore, the intravenous needle is provided with a first sheath, which is a transparent plastic sheath.

[0010] Furthermore, the tube plug puncture needle is fitted with a second sheath, which is a non-transparent plastic sheath.

[0011] Furthermore, a tube clamp is provided on the flexible conduit.

[0012] Compared with existing technologies, the blood collection device for medical testing described in this utility model has the following advantages:

[0013] (1) In this utility model, a baffle is set between the soft catheter and the tube plug puncture needle. The baffle separates the tube plug puncture needle from the operator's hands, preventing the blood dripping from the tube plug puncture needle from contaminating the medical staff's hands when the one-way valve in the soft catheter weakens during tube replacement and blood collection. At the same time, it prevents the blood collection tube from contaminating the medical staff's hands due to sealing and blood leakage, thereby improving the safety of blood collection for medical staff.

[0014] (2) In this utility model, a tube clamp is used to replace the one-way valve in the current hose. The tube clamp can be closed at any time and the blood collection operation can be stopped in time as needed. When the tube clamp is open, the blood in the hose is output with zero damping, ensuring smooth blood output and improving the operability of the blood collection operation. Attached Figure Description

[0015] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0016] Figure 1 This is a schematic diagram of a blood collection device for medical testing according to an embodiment of the present invention;

[0017] Explanation of reference numerals in the attached figures:

[0018] 1-Soft catheter; 2-Connecting tube; 3-Intravenous needle; 4-First sheath; 5-Wing; 6-Cuticle clamp; 7-Tube connector; 8-Baffle; 9-Needle plug; 10-Tube plug puncture needle; 11-Second sheath. Detailed Implementation

[0019] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0020] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0023] like Figure 1As shown, a blood collection device for medical testing includes a flexible catheter 1, which is a transparent flexible catheter. A connecting tube 2, which is a rigid tube, such as a rigid plastic tube, is provided at the front end of the flexible catheter 1. To facilitate the control of medical personnel in puncturing human veins, a flap 5 is integrally formed on the connecting tube 2. The flap 5 can be one, located on one side of the connecting tube 2, or two, symmetrically located on both sides of the connecting tube 2, with the two flaps 5 located in the same plane. A venous needle 3 is provided at the front end of the connecting tube 2, which is used to puncture human veins and collect venous blood. The rear end of the flexible catheter 1 is connected to a baffle 8 through a tube connector 7. A tube plug puncture needle 10 is provided on the rear end face of the baffle 8 through a needle plug 9. The tube plug puncture needle 10 is used to puncture the negative pressure blood collection tube. At this time, the tube plug puncture needle 10 is connected to the flexible catheter 1 and the venous needle 3. During blood collection and testing, after the venous needle 3 punctures a human vein, the tube plug puncture needle 10 punctures the tube plug of the negative pressure blood collection tube. After successful puncture, the venous blood flows sequentially through the venous needle 3, connecting tube 2, soft catheter 1, tube connector 7, and tube plug puncture needle 10 into the negative pressure blood collection tube for collection. After blood collection is completed, the negative pressure blood collection tube containing the blood is sent to the relevant department for testing. The baffle 8 separates the medical staff's hands from the tube plug puncture needle 10, preventing blood dripping from the tube plug puncture needle 10 from contaminating the medical staff's hands when changing the negative pressure blood collection tube. It also prevents blood dripping from the negative pressure blood collection tube due to poor sealing from contaminating the medical staff's hands, thereby improving the safety of blood collection for medical staff.

[0024] In this invention, the intravenous needle 3 is fitted with a first sheath 4, which is a transparent plastic sheath. The catheter plug puncture needle 10 is fitted with a second sheath 11, which is a non-transparent plastic sheath. This structure protects both the intravenous needle 3 and the catheter plug puncture needle 10.

[0025] In this invention, a clamp 6 is provided on the flexible catheter 1, and no one-way valve is provided inside the flexible catheter 1. The clamp 6 replaces the one-way valve structure commonly found in current flexible catheters. The clamp can be closed at any time and the blood collection operation can be stopped in time as needed. When the clamp is open, the blood is output to the flexible catheter with zero damping, ensuring smooth blood output and improving the operability of the blood collection operation.

[0026] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A blood collection device for medical testing, characterized in that: The device includes a soft catheter (1), a connecting tube (2) at the front end of the soft catheter (1), the connecting tube (2) being a rigid tube, an intravenous needle (3) at the front end of the connecting tube (2), a baffle (8) at the rear end of the soft catheter (1), a needle plug (9) at the rear end of the baffle (8), and a tube plug puncture needle (10) at the tube plug puncture needle (10) connected to the soft catheter (1).

2. The blood collection device for medical testing according to claim 1, characterized in that: The baffle (8) is provided with a tube connector (7) through it. The rear end of the soft conduit (1) is connected to the front port of the tube connector (7). The needle plug (9) is located at the rear port of the tube connector.

3. A blood collection device for medical testing according to claim 1, characterized in that: The connecting pipe (2) is provided with a wing (5).

4. A blood collection device for medical testing according to claim 1, characterized in that: The intravenous needle (3) is covered with a first sheath (4), which is a transparent plastic sheath.

5. A blood collection device for medical testing according to claim 1, characterized in that: The tube plug puncture needle (10) is fitted with a second sheath (11), which is a non-transparent plastic sheath.

6. A blood collection device for medical testing according to claim 1, characterized in that: A tube clamp (6) is installed on the flexible catheter (1).

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