Vacuum blood sampling device suitable for plateau area

Abstract

The vacuum blood sampling device suitable for the plateau area effectively solves the problem that an existing blood sampling needle cannot be suitable for the plateau area. Comprising a collecting barrel, an opening of the collecting barrel faces upwards, a protrusion is arranged at the lower end of the collecting barrel, two L-shaped grooves which are opposite front and back are formed in the protruding end of the collecting barrel, the upper ends of the L-shaped grooves are horizontal, the lower ends of the L-shaped grooves are vertical, the protruding end of the collecting barrel is sleeved with a sleeve, clamping blocks are arranged at the front end and the rear end of the sleeve respectively, and the two clamping blocks can be clamped at the upper ends of the L-shaped grooves on the corresponding sides respectively. A connecting pipe is arranged at the lower end of the sleeve, a needle head is arranged at the free end of the connecting pipe, a fixing plate is arranged at the upper end of the collecting barrel, a piston is slidably connected in the collecting barrel, an up-down axial pull rod is arranged at the upper end of the piston, a connecting plate is arranged at the upper end of the pull rod, and a pull plate located below the fixing plate is arranged on the connecting plate; the negative pressure suction tube is ingenious in conception and convenient to use, the negative pressure suction force can be manually increased, pipeline blockage caused by sticky blood is prevented, and hemolysis and foam generation are prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of blood sampling instruments, in particular to a vacuum blood sampling device suitable for plateau areas. Background Art

[0002] Proper blood sample collection is essential for obtaining accurate and reliable experimental results. Before sample collection, the blood collection method, required blood volume, and appropriate anticoagulant should be determined based on experimental requirements. High-altitude hypoxia can lead to increases in hematocrit, blood viscosity, plasma viscosity, fibrinogen, and erythrocytes. With increasing altitude and prolonged residence at the plateau, red blood cell and hemoglobin proliferation increases, and blood viscosity increases.

[0003] The puncture needle of the existing blood collection needle is relatively thin. When the blood is viscous, the negative pressure attraction of the collection tube is insufficient. The viscous blood may cause the tube to be blocked, making it impossible to continue blood collection. The needle needs to be inserted again for blood collection, which not only causes pain to the patient but also increases the workload of medical staff. Utility Model Content

[0004] In view of the above situation, in order to overcome the defects of the existing technology, the purpose of the present utility model is to provide a vacuum blood collection device suitable for plateau areas, which effectively solves the problem that the existing blood collection needles cannot be used in plateau areas.

[0005] The technical solution is that the utility model includes a collecting cylinder, which opens upward and has a protrusion at its lower end. The protruding end of the collecting cylinder is provided with two L-shaped grooves facing front and back, the upper end of the L-shaped groove is horizontal and the lower end is vertical, and a sleeve is mounted on the protruding end of the collecting cylinder. The front and rear ends of the sleeve are respectively provided with clamping blocks, and the two clamping blocks can be respectively clamped in the upper ends of the L-shaped grooves on their corresponding sides. A connecting tube is provided at the lower end of the sleeve, and a needle is provided at the free end of the connecting tube. A fixed plate is provided at the upper end of the collecting cylinder, and a piston is slidably connected in the collecting cylinder. The upper end of the piston is provided with an upper and lower axial pull rod, and the upper end of the pull rod is provided with a connecting plate, and the connecting plate is provided with a pull plate located below the fixed plate.

[0006] The utility model is ingenious in conception and easy to use. Medical staff only need to pull the pull plate to manually draw blood, which can artificially increase the negative pressure attraction to prevent pipeline blockage due to blood viscosity, reduce secondary puncture, alleviate patient pain, and reduce the workload of medical staff. It can be better applied to plateau areas. After blood collection is completed, medical staff can remove the sleeve from the collection tube. Blood no longer needs to pass through the needle during the injection process of the test tube, which prevents hemolysis and foaming. The protective cover can prevent the needle from pricking the medical staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is an axonometric drawing of the present utility model.

[0008] Figure 2 It is a full-section main axonometric drawing of the utility model.

[0009] Figure 3 It is an axonometric drawing of the collecting barrel in the present utility model.

[0010] Figure 4 It is a top axonometric view of the sleeve in the utility model.

[0011] Figure 5 It is a top axonometric drawing of the present invention. DETAILED DESCRIPTION

[0012] The specific implementation of the present invention will be further described in detail below with reference to the accompanying drawings.

[0013] Depend on Figures 1 to 5 It is given, including a collecting cylinder 1, which opens upward and has a protrusion at its lower end. The protruding end of the collecting cylinder 1 is provided with two front-to-rear L-shaped grooves 2, the upper end of the L-shaped groove 2 is horizontal and the lower end is vertical. A sleeve 3 is mounted on the protruding end of the collecting cylinder 1, and a clamping block 4 is respectively provided at the front and rear ends of the sleeve 3. The two clamping blocks 4 can be respectively clamped at the upper ends of the L-shaped grooves 2 on their corresponding sides. A connecting tube 5 is provided at the lower end of the sleeve 3, and a needle 6 is provided at the free end of the connecting tube 5. A fixing plate 7 is provided at the upper end of the collecting cylinder 1, and a piston 8 is slidably connected in the collecting cylinder 1. The upper end of the piston 8 is provided with an upper and lower axial pull rod 9, and the upper end of the pull rod 9 is provided with a connecting plate 10. The connecting plate 10 is provided with a pull plate 11 located below the fixing plate 7.

[0014] In order to facilitate medical staff to rotate the sleeve 3, a plurality of anti-slip strips evenly distributed along the circumference of the sleeve 3 are provided on the outer edge surface of the sleeve 3.

[0015] In order to enhance the airtightness between the sleeve 3 and the collecting tube 1 , a sealing gasket 12 is provided in the sleeve 3 , and the upper end surface of the sealing gasket 12 can contact the raised end of the collecting tube 1 .

[0016] In order to facilitate medical staff to understand the amount of blood collected, a scale 13 is provided on the outer surface of the collection tube 1.

[0017] In order to increase the stability of the pull rod 9 when it moves, a plurality of stabilizing plates 14 evenly distributed along its circumference are provided on the outer edge surface of the pull rod 9 , and the stabilizing plates 14 maintain contact with the inner surface of the collecting cylinder 1 .

[0018] In order to prevent the needle 6 from injuring medical staff, a protective cover 15 is detachably connected to the needle 6.

[0019] When the utility model is used, the piston 8 is first set to the initial state of contact with the bottom of the collection tube 1. The medical staff takes out the collection tube 1. The protective cover 15 on the needle 6 can prevent the medical staff from being stabbed. After the preparations are made, blood collection can begin.

[0020] First, remove the protective cover 15 on the needle 6, then insert the needle 6 into the patient's vein, then hold the fixing plate 7 with the palm of your hand, and pull the pull plate 11 upward with your fingers. The pull plate 11 drives the connecting plate 10 to move upward, and the connecting plate 10 drives the pull rod 9 to move upward. The pull rod 9 drives the multiple stabilizing plates 14 to move upward. The multiple stabilizing plates 14 keep in contact with the inner surface of the collection tube 1 to prevent the pull rod 9 from moving horizontally. The pull rod 9 drives the piston 8 to move upward, and the enclosed space below the piston 8 generates negative pressure attraction. The blood in the patient's vein is attracted by the negative pressure and begins to enter the needle 6, and then enters the collection tube 1 through the connecting tube 5;

[0021] Medical staff can adjust the pulling force according to the blood flow to prevent viscous blood from clogging the tube. During the blood collection process, medical staff can observe the position of the scale 13 corresponding to the liquid level in the collection tube 1 to obtain the amount of blood collected.

[0022] After the blood collection is completed, the medical staff can pull out the needle 6 from the patient's vein, then put the protective cover 15 on the needle 6, rotate the sleeve 3 counterclockwise, and the multiple anti-slip strips on the sleeve 3 can prevent the hand from slipping. The sleeve 3 drives the two blocks 4 to rotate counterclockwise. When the block 4 moves to the vertical end of the L-shaped groove 2, pull the sleeve 3 downward, and the sleeve 3 drives the two blocks 4 to move downward, so that the block 4 is removed from the L-shaped groove 2, thereby separating the sleeve 3 from the collecting tube 1. The medical staff can inject the blood in the collecting tube 1 into the test tube for testing.

[0023] The utility model has the advantages of simple structure, convenient operation, novel concept and strong practicality. The pull rod and connecting plate are provided so that medical staff can draw blood by simply pulling the pull plate. Manual operation can artificially increase the negative pressure attraction, prevent pipeline blockage due to blood viscosity, reduce secondary puncture, alleviate patient pain, reduce the workload of medical staff, and can be better applied to plateau areas. The L-shaped groove and card block are provided for medical staff to remove the sleeve from the collection tube. Blood does not need to pass through the needle during the injection into the test tube, so hemolysis and foaming are prevented. The protective cover is provided to prevent the needle from pricking the medical staff.

Claims

1. A vacuum blood collection device suitable for plateau areas, comprising a collection tube (1), characterized in that: The collecting cylinder (1) is opened upward and has a protrusion at its lower end. The protruding end of the collecting cylinder (1) is provided with two L-shaped grooves (2) facing each other front and back. The upper end of the L-shaped groove (2) is horizontal and the lower end is vertical. A sleeve (3) is mounted on the protruding end of the collecting cylinder (1). The front and rear ends of the sleeve (3) are respectively provided with clamping blocks (4). The two clamping blocks (4) can be respectively clamped on the upper ends of the L-shaped grooves (2) on their corresponding sides. A connecting tube (5) is provided at the lower end of the sleeve (3). A needle (6) is provided at the free end of the connecting tube (5). A fixing plate (7) is provided at the upper end of the collecting cylinder (1). A piston (8) is slidably connected in the collecting cylinder (1). The upper end of the piston (8) is provided with an upper and lower axial pull rod (9). The upper end of the pull rod (9) is provided with a connecting plate (10). The connecting plate (10) is provided with a pull plate (11) located below the fixing plate (7).

2. The vacuum blood sampling device suitable for plateau areas according to claim 1, characterized in that: The outer edge surface of the sleeve (3) is provided with a plurality of anti-slip strips evenly distributed along its circumferential direction.

3. The vacuum blood sampling device suitable for plateau areas according to claim 1, characterized in that: A sealing gasket (12) is provided in the sleeve (3), and the upper end surface of the sealing gasket (12) can contact the raised end of the collecting tube (1).

4. The vacuum blood sampling device suitable for plateau areas according to claim 1, characterized in that: The outer surface of the collecting cylinder (1) is provided with a scale (13).

5. The vacuum blood sampling device suitable for plateau areas according to claim 1, characterized in that: The outer edge surface of the pull rod (9) is provided with a plurality of stabilizing plates (14) evenly distributed along its circumferential direction, and the stabilizing plates (14) maintain contact with the inner surface of the collecting cylinder (1).

6. The vacuum blood sampling device suitable for plateau areas according to claim 1, characterized in that: The needle (6) is detachably connected to a protective cover (15).

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