Inner wall polishing sampling needle for blood detection

Abstract

The utility model belongs to the technical field of sample injection needles, and particularly relates to an inner wall polishing sample injection needle for blood detection, which comprises a needle tube, a protective component is mounted on the surface of the needle tube and comprises a fixed seat, a screw is movably connected into the fixed seat, a movable seat is in threaded connection with the outer surface of the screw, and a fixed plate is fixedly connected with the side surface of the movable seat. A semicircular groove is formed in the lower surface of the fixed plate, a first check ring is fixedly connected to the upper surface of the fixed plate, a containing groove is formed in the side surface of the movable seat, rotating teeth are movably connected into the containing groove, a movable plate is movably connected into the containing groove, a gear ring is fixedly connected to one end of the movable plate, and the gear ring is meshed with the rotating teeth. The side surface of the movable plate is fixedly connected with a bottom plate, and the upper surface of the movable plate is fixedly connected with a second check ring. According to the blood sample transfer needle, the collection part of the needle head can be protected in the blood sample transfer process, cross contamination is avoided, and the accuracy of a detection result is ensured.

Description

Technical Field

[0001] This utility model belongs to the field of sample dispensing needle technology, specifically a sample dispensing needle for polishing the inner wall of a blood testing device. Background Technology

[0002] Blood is composed of plasma and blood cells. Plasma contains nutrients such as plasma proteins and lipoproteins, as well as inorganic salts, oxygen, and hormones; blood cells contain red blood cells, white blood cells, and platelets. Physiological and pathological changes in an organism often cause alterations in blood composition; therefore, blood test data are important indicators reflecting health status. A sampling needle is typically used in blood testing.

[0003] In existing technologies, medical personnel typically need to manually operate the sampling needle to collect blood samples. However, during the transfer process after collection, the lack of protection at the needle tip makes the blood susceptible to cross-contamination when transferred to the reaction container, affecting the accuracy of the test results. Summary of the Invention

[0004] The purpose of this invention is to provide a blood sample collection needle with an inner polished surface, which can protect the collection site of the needle during the transfer of blood samples, avoid cross-contamination, and ensure the accuracy of the test results.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A blood testing inner wall polishing and sample application needle is provided, comprising a needle tube, a protective component mounted on the surface of the needle tube, the protective component including a fixed base, the side surface of the fixed base being fixedly connected to the outer surface of the needle tube, a screw being movably connected inside the fixed base, a movable base being threadedly connected to the outer surface of the screw, a fixed plate being fixedly connected to the side surface of the movable base, a semi-circular groove being formed on the lower surface of the fixed plate, a first retaining ring being fixedly connected to the upper surface of the fixed plate, a receiving groove being formed on the side surface of the movable base, a rotating tooth being movably connected inside the receiving groove, a movable plate being movably connected inside the receiving groove, a toothed ring being fixedly connected to one end of the movable plate, the toothed ring meshing with the rotating tooth, a base plate being fixedly connected to the side surface of the movable plate, and a second retaining ring being fixedly connected to the upper surface of the movable plate.

[0006] Optionally, a needle body is fixedly connected to the lower end of the needle tube, and the inner wall of the needle body is polished.

[0007] Optionally, the outer surface of the needle tube is fixedly connected with a scale line, and the scale line is arranged evenly and equidistantly.

[0008] Optionally, the upper end of the needle tube is fixedly connected to a mounting plate, and the upper surface of the mounting plate is provided with a through hole.

[0009] Optionally, a piston rod is movably connected inside the through hole, and a pressure plate is fixedly connected to the upper end of the piston rod.

[0010] Optionally, the lower end of the piston rod extends through the interior of the through hole into the interior of the needle tube, and a piston is fixedly connected to the lower end of the piston rod, with sealing rubber provided on the outer surface of the piston.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] This invention features a protective assembly. After the sampling needle collects a blood sample, the control screw rotates, causing the movable seat to descend and the fixed plate to descend as well. The fixed plate is positioned at the lower end of the needle body. At this point, rotating the rotating gear, through engagement with the gear ring, causes the movable plate to rotate closer to the fixed plate. The bottom plate then enters the semi-circular groove, blocking the liquid outlet at the lower end of the needle body. Simultaneously, the first and second retaining rings surround the bottom of the outer wall of the needle body, thus protecting the lower part of the needle. This invention protects the collection site of the needle during blood sample transfer, preventing cross-contamination and ensuring the accuracy of the test results. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a first-view overall structural diagram of the present invention;

[0015] Figure 2 This is a schematic diagram of the overall structure of the present invention from a second perspective;

[0016] Figure 3 This is a schematic diagram of the overall structure of the present invention from a third-person perspective;

[0017] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A;

[0018] Figure 5 This is a cross-sectional structural diagram of the present invention;

[0019] Figure 6 This utility model Figure 5 Enlarged structural diagram at point B;

[0020] Figure 7 This utility model Figure 5 Enlarged structural diagram at point C;

[0021] Figure 8 This is a schematic diagram of the protective component of this utility model in the open state.

[0022] In the diagram: 1. Needle tube; 2. Protective assembly; 201. Fixed base; 202. Screw; 203. Movable base; 204. Fixed plate; 205. Semicircular groove; 206. First retaining ring; 207. Receiving groove; 208. Rotating gear; 209. Movable plate; 210. Gear ring; 211. Base plate; 212. Second retaining ring; 3. Needle body; 4. Scale line; 5. Mounting plate; 6. Through hole; 7. Piston rod; 8. Pressure plate; 9. Piston; 10. Sealing rubber. Detailed Implementation

[0023] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0024] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0025] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0027] The present invention will now describe a blood testing inner wall polishing and sample application needle according to an embodiment of the present invention. Please refer to [link to relevant documentation]. Figures 1 to 8A blood testing needle with polished inner wall for sample application includes a needle tube 1. A protective component 2 is mounted on the surface of the needle tube 1. The protective component 2 includes a fixed base 201. The side surface of the fixed base 201 is fixedly connected to the outer surface of the needle tube 1. The fixed base 201 facilitates the raising and lowering of a movable base 203 controlled by a screw 202. A screw 202 is movably connected inside the fixed base 201. The upper end of the screw 202 extends through the interior of the fixed base 201 to above the fixed base 201. A handle is fixedly connected to the upper end of the screw 202, and the rotation of the screw 202 can be controlled by the handle. The outer surface of the screw 202... A movable seat 203 is threadedly connected, and a fixed plate 204 is fixedly connected to the side surface of the movable seat 203. A semi-circular groove 205 is formed on the lower surface of the fixed plate 204, which can cooperate with the base plate 211 to protect the lower end outlet of the needle body 3. A first retaining ring 206 is fixedly connected to the upper surface of the fixed plate 204. The first retaining ring 206 is semi-circular. A receiving groove 207 is formed on the side surface of the movable seat 203, and a rotating tooth 208 is movably connected inside the receiving groove 207. The rotating tooth 208 controls the rotation of the toothed ring 210, thereby controlling the rotation of the movable plate 209. The receiving groove 207 is internally connected to a movable plate 209. When the movable plate 209 opens, the bottom plate 211 separates from the semi-circular groove 205, creating space between the movable plate 209 and the fixed plate 204. At this time, the movable seat 203 rises, allowing the lower end of the needle body 3 to pass through the semi-circular groove 205 without obstruction, facilitating the use of the needle body 3. One end of the movable plate 209 is fixedly connected to a gear ring 210, which meshes with a rotating gear 208. The rotation of the rotating gear 208 drives the gear ring 210 to rotate. The lower surface of the movable seat 203 is threaded with a clamping bolt. By tightening the clamping bolt, it is brought into contact with the lower surface of the movable seat 203. The movable plate 209 is pressed tightly to prevent it from rotating under external force after it is closed, thus ensuring the closing effect of the movable plate 209 and facilitating the protection of the needle body 3. A base plate 211 is fixedly connected to the side surface of the movable plate 209. The base plate 211 is semi-circular, and its outer surface is in contact with the inner surface of the semi-circular groove 205. A second retaining ring 212 is fixedly connected to the upper surface of the movable plate 209. The second retaining ring 212 is semi-circular and can cooperate with the first retaining ring 206 to surround the periphery of the liquid outlet of the needle body 3, thus protecting the lower part of the needle body 3.

[0028] In this embodiment of the utility model, please refer to Figures 1 to 8 The lower end of the needle tube 1 is fixedly connected to the needle body 3. The inner wall of the needle body 3 is polished to achieve a mirror finish, which facilitates the collection and transportation of blood samples.

[0029] In this embodiment of the utility model, please refer to Figures 1 to 8The needle tube 1 has multiple graduation lines 4 fixedly connected to its outer surface. These graduation lines 4 are evenly spaced and can be used to visually control the amount of blood drawn. A mounting plate 5 is fixedly connected to the upper end of the needle tube 1 to provide support for the fingers. A through hole 6 is provided on the upper surface of the mounting plate 5 to facilitate the movement of the piston rod 7. The piston rod 7 is movably connected inside the through hole 6, allowing the force applied by the medical personnel to be directly applied to the piston 9. A pressure plate 8 is fixedly connected to the upper end of the piston rod 7 to control its movement. The lower end of the piston rod 7 extends through the through hole 6 into the interior of the needle tube 1. A piston 9 is fixedly connected to the lower end of the piston rod 7. A sealing rubber 10 is provided on the outer surface of the piston 9. The movement of the piston 9 inside the needle tube 1 allows the needle tube 1 to draw blood samples through the needle body 3. The sealing rubber 10 improves the sealing performance of the piston 9.

[0030] 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 and improvements 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 testing inner wall polishing and sample application needle, comprising a needle tube (1), characterized in that: A protective component (2) is installed on the surface of the needle tube (1). The protective component (2) includes a fixed base (201). The side surface of the fixed base (201) is fixedly connected to the outer surface of the needle tube (1). A screw (202) is movably connected inside the fixed base (201). A movable base (203) is threadedly connected to the outer surface of the screw (202). A fixed plate (204) is fixedly connected to the side surface of the movable base (203). A semi-circular groove (205) is formed on the lower surface of the fixed plate (204). The upper surface of the fixed plate (204) is fixedly connected to... The movable seat (203) has a first retaining ring (206), and a receiving groove (207) is provided on the side surface of the movable seat (203). A rotating tooth (208) is movably connected inside the receiving groove (207). A movable plate (209) is movably connected inside the receiving groove (207). A toothed ring (210) is fixedly connected to one end of the movable plate (209). The toothed ring (210) meshes with the rotating tooth (208). A bottom plate (211) is fixedly connected to the side surface of the movable plate (209). A second retaining ring (212) is fixedly connected to the upper surface of the movable plate (209).

2. The blood testing inner wall polishing and sample application needle as described in claim 1, characterized in that: The lower end of the needle tube (1) is fixedly connected to a needle body (3), and the inner wall of the needle body (3) is polished.

3. The blood testing inner wall polishing and sample application needle as described in claim 1, characterized in that: The outer surface of the needle tube (1) is fixedly connected with scale lines (4), and there are multiple scale lines (4) arranged at equal intervals.

4. The blood testing inner wall polishing and sample application needle as described in claim 1, characterized in that: The upper end of the needle tube (1) is fixedly connected to a mounting plate (5), and the upper surface of the mounting plate (5) is provided with a through hole (6).

5. The blood testing inner wall polishing and sample application needle as described in claim 4, characterized in that: A piston rod (7) is movably connected inside the through hole (6), and a pressure plate (8) is fixedly connected to the upper end of the piston rod (7).

6. The blood testing inner wall polishing and sample application needle as described in claim 5, characterized in that: The lower end of the piston rod (7) extends through the inside of the through hole (6) to the inside of the needle tube (1). The lower end of the piston rod (7) is fixedly connected to a piston (9), and the outer surface of the piston (9) is provided with sealing rubber (10).

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