Closed pressing type safe blood sampling device

Abstract

The utility model discloses a closed push type safe blood sampling device, which relates to the technical field of puncture blood sampling, and comprises a shell and a rear cover arranged on the shell, and further comprises a support plate arranged on the shell and detachably and fixedly connected with the shell, and a push rod arranged on the support plate, the puncture assembly is arranged on the supporting plate; the transmitting assembly is arranged on the puncturing assembly; the triggering assembly is arranged on the shell; through cooperation of the puncture assembly, the emission assembly and the trigger assembly, the needle head can be automatically withdrawn into the shell after tip puncture and blood collection of a patient are completed, and therefore secondary pollution of the needle head is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of puncture blood collection, in particular to a closed pressing type safety blood collection device. Background Art

[0002] With the continuous development and improvement of modernization, micro-quantification and convenience of laboratory medicine technology, the application of peripheral blood is becoming more and more extensive. Due to the poor compliance of children's independent cooperation and the thin blood vessels, the success rate of blood collection in children is lower and the complication rate is higher than that in adults during the collection of venous blood specimens. Therefore, peripheral blood collection plays an indispensable role in pediatric clinical work.

[0003] Most of the existing closed pressing type safety blood collection devices cannot automatically retract the needle during the blood collection process for patients, which may lead to the needle being exposed outside the blood collection device for a long time and may cause secondary contamination. Especially when collecting blood from children, if the first blood collection fails, it often takes more than ten minutes or even half an hour to comfort the children. At this time, researchers believe that the blood collection needle should be designed to retract to ensure that the blood collection needle is not contaminated. Therefore, the existing closed pressing type safety blood collection devices urgently need to be improved. Summary of the Utility Model

[0004] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide a closed pressing type safety blood collection device, aiming to solve the above technical problems.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A closed pressing type safety blood collection device, including a housing and a rear cover, the rear cover is arranged on the housing, and further includes:

[0007] A support plate, arranged on the housing and detachably and fixedly connected to the housing;

[0008] A main puncture assembly, arranged on the back plate, the main puncture assembly includes:

[0009] A main puncture spring, arranged on the back plate and fixedly connected to the back plate;

[0010] A support rod, arranged on the main puncture spring and fixedly connected to the main puncture spring; a puncture head assembly, arranged on the support rod;

[0011] A puncture assembly, arranged on the support plate;

[0012] A launching assembly, arranged on the puncture assembly;

[0013] A trigger assembly, arranged on the housing;

[0014] The protective cap assembly is arranged on the outer shell.

[0015] Preferably, the puncture assembly includes:

[0016] A back plate, which is arranged on the rear cover and fixedly connected to the rear cover;

[0017] Preferably, the puncture head assembly includes:

[0018] A connecting plate, which is arranged on the support rod and fixedly connected to the support plate; a needle, which is arranged on the connecting plate and fixedly connected to the connecting plate.

[0019] Preferably, the launching assembly includes:

[0020] A concave plate, which is arranged on the outer shell;

[0021] A compression spring, which is arranged on the concave plate and fixedly connected to the concave plate;

[0022] A rotating rod, which is arranged on the concave plate and rotatably connected to the concave plate.

[0023] Preferably, the concave plate includes:

[0024] A combined plate, which is arranged on the outer shell and fixedly connected to the outer shell;

[0025] A groove, which is arranged on the combined plate.

[0026] Preferably, the trigger assembly includes:

[0027] A trigger leather cord, which is arranged on the outer shell and fixedly connected to the outer shell;

[0028] A trigger plate, which is arranged on the trigger leather cord and fixedly connected to the trigger leather cord.

[0029] Preferably, the protective cap assembly includes:

[0030] A protective shell, which is arranged on the outer shell and detachably and fixedly connected to the outer shell;

[0031] A soft rubber sleeve, which is arranged on the protective shell and fixedly connected to the protective shell.

[0032] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present utility model are as follows:

[0033] Through the cooperation among the puncture assembly, the launching assembly and the trigger assembly, the present utility model can automatically retract the needle into the outer shell after the peripheral puncture blood collection of the patient is completed, thereby avoiding the secondary contamination of the needle. Description of the Drawings

[0034] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the accompanying drawings required for the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can also be obtained based on these drawings.

[0035] Figure 1 Shows a schematic cross-sectional structure diagram of a closed press-type safety blood collection device.

[0036] Figure 2 Shows a schematic front view structure diagram of a closed press-type safety blood collection device.

[0037] Figure 3 Shows a schematic structure diagram of the protective sleeve assembly of a closed press-type safety blood collection device.

[0038] Figure 4 Shows a partial schematic structure diagram of the main piercing assembly and the firing assembly of a closed press-type safety blood collection device.

[0039] Legend description:

[0040] 1. Outer shell; 2. Rear cover; 3. Support plate; 4. Back plate; 5. Main piercing spring; 6. Support rod; 7. Connecting plate; 8. Needle; 9. Compression spring; 10. Rotating rod; 11. Combining plate; 12. Groove; 13. Protective shell; 14. Soft rubber sleeve; 15. Trigger cord; 16. Trigger plate. Detailed implementation manners

[0041] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts belong to the scope of protection of the present utility model.

[0042] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0043] It should be noted that when a component is referred to as "fixed to" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component at the same time. When a component is considered to be "disposed on" another component, it can be directly disposed on the other component or there may be an intermediate component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are only for the purpose of illustration.

[0044] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality of" means two or more, unless otherwise specifically defined.

[0045] Embodiment 1

[0046] Refer to Figures 1 to 4 To further illustrate the embodiment of the closed pressing type safety blood collection device of the present utility model.

[0047] Embodiment 1 of the present invention provides a closed pressing type safety blood collection device, including a housing 1 and a rear cover 2. The rear cover 2 is disposed on the housing 1. It further includes a support plate 3, which is disposed on the housing 1 and is detachably and fixedly connected to the housing 1, facilitating providing a force application point when the main piercing spring 5 is stretched. A piercing assembly is disposed on the support plate 3, including a main piercing assembly, which is disposed on the back plate 4. And the main piercing assembly includes a main piercing spring 5, which is disposed on the back plate 4 and is fixedly connected to the back plate 4, being the main component for the needle to rebound. A support rod 6 is disposed on the main piercing spring 5 and is fixedly connected to the main piercing spring 5, being the intermediate member connecting the main piercing spring 5 and the piercing head assembly. And the piercing head assembly is disposed on the support rod 6 and is the necessary component for piercing. At the same time, a firing assembly is disposed on the piercing assembly, which is arranged like this to fix the position of the main piercing assembly in the initial state. A trigger assembly is disposed on the housing 1, which is the key for the needle 8 to move downward and pierce the patient's finger.

[0048] Refer to Figure 1 , as a preferred embodiment, the piercing assembly includes a back plate 4, which is disposed on the rear cover 2 and is fixedly connected to the rear cover 2. Arranged like this, there is a force support point when the main piercing spring 5 is stretched again. It further includes a piercing head assembly, and the piercing head assembly includes a connecting plate 7, which is disposed on the support rod 6 and is fixedly connected to the support plate 3, providing a stable platform for the needle 8. The needle 8 is disposed on the connecting plate 7 and is fixedly connected to the connecting plate 7.

[0049] The trigger plate 16 moves towards the inside of the housing 1, driving the trigger cord 15 to be stretched. When the trigger plate 16 contacts the concave plate, continued movement will compress the compression spring 9. The compressed spring will store the applied force as elastic potential energy. At the same time, the rotating rod 10 connected to the outside of the concave plate will also move downward as the compression spring is compressed, so that the support rod 6 rotatably connected to the rotating rod 10 will also be driven downward. At this time, the main piercing spring 5 will be stretched, and the needle 8 and the connecting plate 7 will also move downward until the fingertip of the patient is punctured.

[0050] Referring to Figure 4 , as a preferred embodiment, the launching assembly includes: a concave plate disposed on the housing 1, which can fix the support plate with the needle 8 to maintain stability in the initial state; a compression spring 9 disposed on the concave plate and fixedly connected to the concave plate, so that when the trigger assembly applies pressure, the concave plate can drive the rotating rod 10 to move. The rotating rod 10 is disposed on the concave plate and rotatably connected to the concave plate, and can push the support rod 6 downward under the drive of the concave plate; at the same time, the concave plate further includes a combined plate 11 disposed on the housing 1 and fixedly connected to the housing 1, which is the component on which the trigger assembly acts; a groove 12 is disposed on the combined plate 11 to keep the support rod 6 with the needle 8 stable in the initial state.

[0051] The main piercing spring 5 will be stretched, and the needle 8 and the connecting plate 7 will also move downward. Since the connecting plate 7 is initially stuck in the groove 12 of the concave plate all the time, when the concave plate is squeezed, the end with the groove 12 will be opened, so that the connecting plate 7 can be driven downward by the support rod 6 until the fingertip of the patient is punctured.

[0052] Referring to Figure 1 , as a preferred embodiment, the trigger assembly includes a trigger cord 15 disposed on the housing 1 and fixedly connected to the housing 1, which enables the trigger plate to have a rebounding force after being pressed downward. Moreover, the trigger plate 16 is disposed on the trigger cord 15 and fixedly connected to the trigger cord 15, which is the key component for the support rod 6 to drive the puncture head assembly to move.

[0053] The trigger plate 16 is close to the fingertip of the patient. Hold the housing 1 and apply a slight downward force. When the part of the trigger plate 16 extending out of the housing 1 completely enters the housing 1, stop applying force to the housing 1. During this process, the trigger plate 16 moves towards the inside of the housing 1, driving the trigger cord 15 to be stretched. When the trigger plate 16 contacts the concave plate, continued movement will compress the compression spring 9.

[0054] Embodiment Two:

[0055] On the basis of Embodiment One, the closed-pressurized safety blood collection device further includes a protective cap assembly disposed on the housing 1.

[0056] Referring toFigure 3 , as a preferred embodiment, the protective cap assembly includes a protective shell 13, which is disposed on the outer shell 1 and is detachably and fixedly connected to the outer shell 1. It further includes a soft rubber sleeve 14, which is disposed on the protective shell 13 and is fixedly connected to the protective shell 13.

[0057] Before starting the peripheral puncture of the patient, it is necessary to first check the integrity of the protective cap assembly. If the protective cap assembly is damaged or detached, the blood collector has been contaminated and cannot be used on the patient anymore. If it is confirmed that there is no problem, then separate the protective cap assembly and the needle 8.

[0058] The above description of the embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but rather will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. Closed press-type safety blood collection device, including a housing (1) and a rear cover (2), the rear cover (2) is arranged on the housing (1), characterized in that, Further included are: A support plate (3) is provided on the housing (1) and is detachably and fixedly connected to the housing (1); A puncture assembly is provided on the support plate (3). The puncture assembly includes: A back plate (4) is provided on the rear cover (2) and is fixedly connected to the rear cover (2); A main puncture assembly is provided on the back plate (4). The main puncture assembly includes: A main puncture spring (5) is provided on the back plate (4) and is fixedly connected to the back plate (4); A support rod (6) is provided on the main puncture spring (5) and is fixedly connected to the main puncture spring (5); A puncture head assembly is provided on the support rod (6); A firing assembly is provided on the puncture assembly; A trigger assembly is provided on the housing (1); A protective cap assembly is provided on the housing (1).

2. The enclosed pressing type safety blood collection device according to claim 1, wherein, The puncture head assembly includes: A connecting plate (7) is provided on the support rod (6) and is fixedly connected to the support plate (3); A needle (8) is provided on the connecting plate (7) and is fixedly connected to the connecting plate (7).

3. The enclosed pressing type safety blood collection device according to claim 2, wherein The firing assembly includes: A concave plate is provided on the housing (1); A compression spring (9) is provided on the concave plate and is fixedly connected to the concave plate; A rotating rod (10) is provided on the concave plate and is rotatably connected to the concave plate.

4. The enclosed pressing type safety blood collection device according to claim 3, wherein, The concave plate includes: A combined plate (11) is provided on the housing (1) and is fixedly connected to the housing (1); A groove (12) is provided on the combined plate (11).

5. The enclosed pressing type safety blood collection device according to claim 4, wherein, The trigger assembly includes: A trigger leather cord (15) is provided on the housing (1) and is fixedly connected to the housing (1); A trigger plate (16) is provided on the trigger leather cord (15) and is fixedly connected to the trigger leather cord (15).

6. The enclosed pressing type safety blood collection device according to claim 5, characterized in that, The protective cap assembly includes: A protective shell (13) is provided on the housing (1) and is detachably and fixedly connected to the housing (1); A soft rubber sleeve (14) is provided on the protective shell (13) and is fixedly connected to the protective shell (13).

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