Anti-stick blood sampling device

Abstract

The utility model relates to the field of medical equipment, concretely relates to a kind of anti-stab blood sampling device, including blood transfusion tube, the one end of blood transfusion tube is provided with intravenous needle, the other end is provided with connecting seat, connecting seat is provided with tube plug puncture needle, connecting seat is also equipped with sleeve, the inside diameter of sleeve is compatible with the outside diameter of vacuum blood collection tube, the one end of sleeve away from connecting seat is provided with opening, tube plug puncture needle is located in sleeve, the one end of sleeve setting opening is detachably equipped with cover cap.The utility model, by setting sleeve on tube plug puncture needle, vacuum blood collection tube can be inserted into sleeve and tube plug puncture needle is punctured, but the finger of medical staff is difficult to contact tube plug puncture needle in sleeve, thereby protection effect to medical staff is played, and the probability of stab injury is reduced.

Description

Technical Field

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

[0002] The blood collection needle consists of a venous puncture needle, a blood transfusion tubing, and a tube plug puncture needle. When in use, the venous puncture needle is inserted into the patient's arm, and then the tube plug puncture needle is inserted into the vacuum blood collection tube, relying on the vacuum effect to draw blood samples.

[0003] The aforementioned blood collection needles are prone to causing puncture injuries during the process of medical staff inserting the tube plug puncture needle into the vacuum blood collection tube. This is especially true for patients with many tests who need to have their vacuum blood collection tubes changed multiple times. The repeated insertion of the tube plug puncture needle into the vacuum blood collection tube by medical staff increases the risk of puncture injuries to medical staff.

[0004] Therefore, a technical solution is needed to address the issue of puncture injuries that can easily occur when medical staff repeatedly insert the tube plug puncture needle into the vacuum blood collection tube during the blood collection process. Utility Model Content

[0005] The purpose of this invention is to overcome the technical problem that medical staff need to repeatedly insert the tube plug puncture needle into the vacuum blood collection tube during the blood collection process, which is prone to puncture injury, and to provide a blood collection device that prevents puncture injury.

[0006] This utility model provides a puncture-proof blood collection device, including a blood transfusion tube. One end of the blood transfusion tube is provided with a venous needle, and the other end is provided with a connecting seat. A tube plug puncture needle is provided on the connecting seat. The connecting seat is also provided with a sleeve. The inner diameter of the sleeve is adapted to the outer diameter of the vacuum blood collection tube. An opening is provided at the end of the sleeve away from the connecting seat. The tube plug puncture needle is located inside the sleeve. A detachable cap is provided at the end of the sleeve with the opening.

[0007] This utility model discloses a puncture-proof blood collection device. In use, the venous needle at one end of the infusion tube is punctured in the patient's arm, and the tube plug puncture needle at the other end of the infusion tube is punctured with a vacuum blood collection tube. During the puncture process, the cannula on the connecting seat is fitted onto the outer wall of the vacuum blood collection tube. The vacuum blood collection tube can enter the cannula through the opening at the end of the cannula and perform the puncture operation with the tube plug puncture needle. However, it is difficult for medical personnel to touch the tube plug puncture needle inside the cannula, thus protecting medical personnel and reducing the chance of puncture injury.

[0008] Preferably, the distance between the end of the tube plug puncture needle and the cannula opening is d, where 0.5cm≤d≤1cm.

[0009] The distance between the tip of the cannula plug puncture needle and the cannula opening should be set at more than 0.5 cm to ensure that the cannula provides sufficient protection for the cannula plug puncture needle and that the cannula plug puncture needle is difficult for medical staff to contact when pressing the cannula opening. At the same time, the distance between the tip of the cannula plug puncture needle and the cannula opening should be set at less than 1 cm to avoid the cannula being too long and to prevent the cannula plug puncture needle from being too deep inside the cannula, which would affect the puncture operation of the cannula plug puncture needle on the vacuum blood collection tube.

[0010] Preferably, the end of the sleeve where the cap is located is flared.

[0011] It serves as a guide for the blood collection tube, making it easier to insert the tube into the cannula.

[0012] Preferably, the sleeve is detachably connected to the connecting seat.

[0013] If an error occurs during the puncture procedure or other unexpected situation arises, and it is necessary to operate the cannula, puncture needle, and protective sleeve, the cannula can be removed from the connector.

[0014] Preferably, the sleeve is threadedly connected to the connecting seat.

[0015] It enables detachable installation of the sleeve on the connector, making installation and removal easy and the connection relatively stable, preventing accidental detachment.

[0016] Preferably, the sleeve is a transparent structural component.

[0017] It allows medical staff to observe the inside of the cannula, thus facilitating control of the puncture depth and the amount of blood collected from the vacuum blood collection tube, while also allowing them to observe whether there is any blood leakage.

[0018] Preferably, the sleeve is a structural component made of polypropylene.

[0019] The cannula made of polypropylene has good transparency and high mechanical strength, and can maintain its shape when pressed or dropped, thus providing good protection for the tube plug puncture needle.

[0020] Preferably, the inner wall of the sleeve is provided with a support washer, and the support washer is a structural component made of an elastic material.

[0021] When the tube plug puncture needle is used to puncture the vacuum blood collection tube, the cannula is placed on the vacuum blood collection tube. By adding a support washer of elastic material to the inner wall of the cannula, the cannula and the vacuum blood collection tube are relatively stable, which indirectly protects the tube plug puncture needle inserted into the vacuum blood collection tube and makes it less likely for the inserted tube plug puncture needle to fall out.

[0022] Preferably, the support washer is disposed on the side of the sleeve near the connecting seat.

[0023] To avoid the support washer affecting the initial puncture procedure, the support washer contacts the outer wall of the cannula when the puncture is about to be completed, so that the cannula and vacuum blood collection tube are relatively stable.

[0024] Preferably, the distance between the support washer and the end of the tube plug puncture needle is set to c, where 1cm≤c≤2cm.

[0025] The distance between the support washer and the end of the tube plug puncture needle should be set at more than 1 cm, so that the support washer will only contact the outer wall of the vacuum blood collection tube after the puncture needle has been inserted at least 1 cm. This ensures that the support washer will not affect the initial puncture operation. At the same time, the distance should be set at less than 2 cm to ensure that the support washer can reach the outer wall of the vacuum blood collection tube within the stroke of the tube plug puncture needle, so that the cannula and the vacuum blood collection tube can play a stabilizing role.

[0026] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0027] This invention provides a puncture-proof blood collection device. By installing a cannula on the puncture needle, a vacuum blood collection tube can be inserted into the cannula for puncture, while preventing medical personnel's fingers from contacting the puncture needle inside the cannula, thus protecting medical personnel and reducing the chance of puncture injury. The cannula also protects the puncture needle, reducing contact with the external environment and lowering the probability of contamination. Furthermore, the cap protects the internal environment of the cannula, preventing contamination of the puncture needle and its protective sleeve when not in use. It also prevents medical personnel from accidentally inserting their fingers into the cannula during handling, causing puncture injuries. The cap can be removed when blood collection is needed. (See attached drawings.)

[0028] Figure 1 This is a schematic diagram of the structure of a puncture-resistant blood collection device according to this utility model;

[0029] Figure 2 yes Figure 1 Enlarged view of area A in the middle;

[0030] Figure 3 This is a diagram showing the usage status of a puncture-resistant blood collection device according to this utility model;

[0031] Marked in the image:

[0032] 1-Infusion tube, 2-Venous needle, 3-Plug puncture needle, 4-Connector, 5-Cannula, 51-Cap, 52-Support washer, 6-Vacuum blood collection tube. Detailed Implementation

[0033] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0034] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of this utility model is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0035] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0036] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0037] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0038] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "equipped with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0039] Example 1

[0040] like Figure 1 , Figure 2 and Figure 3 As shown, a puncture-proof blood collection device includes a blood transfusion tube 1, with a venous needle 2 at one end and a connecting seat 4 at the other end. A tube plug puncture needle 3 is provided on the connecting seat 4, and a cannula 5 is also provided on the connecting seat 4. The inner diameter of the cannula 5 is adapted to the outer diameter of the vacuum blood collection tube 6. An opening is provided at the end of the cannula 5 away from the connecting seat 4, and the tube plug puncture needle 3 is located inside the cannula 5. A detachable cap 51 is provided at the end of the cannula 5 with the opening.

[0041] In use, the venous needle 2 at one end of the infusion tube 1 is punctured in the patient's arm, and the tube plug puncture needle 3 at the other end of the infusion tube 1 is punctured with the vacuum blood collection tube 6. During the puncture, the cannula 5 on the connecting seat 4 is fitted onto the outer wall of the vacuum blood collection tube 6. The vacuum blood collection tube 6 can enter the cannula 5 through the opening at the end of the cannula 5 and perform the puncture operation with the tube plug puncture needle 3. However, it is difficult for medical staff to touch the tube plug puncture needle 3 inside the cannula 5 with their fingers, thus protecting medical staff and reducing the chance of puncture injury.

[0042] The specific length setting of the cannula 5: The distance between the end of the cannula plug puncture needle 3 and the opening of the cannula 5 is d, 0.5cm≤d≤1cm. Setting the distance between the end of the cannula plug puncture needle 3 and the opening of the cannula 5 to be more than 0.5cm ensures that the cannula 5 provides sufficient protection for the cannula plug puncture needle 3, and makes it difficult for medical personnel to contact the cannula plug puncture needle 3 when pressing the opening of the cannula 5. At the same time, setting the distance between the end of the cannula plug puncture needle 3 and the opening of the cannula 5 to be less than 1cm avoids the cannula 5 from being too long overall, and also avoids the cannula plug puncture needle 3 being too deep inside the cannula 5, which would affect the puncture operation of the cannula plug puncture needle 3 on the vacuum blood collection tube 6.

[0043] Example 2

[0044] like Figure 1 , Figure 2 and Figure 3As shown, in this embodiment, the difference from embodiment 1 is that one end of the sleeve 5 with the cap 51 is set in a trumpet shape, with the large end of the trumpet-shaped opening facing outward and the small end connected to the main body of the sleeve 5.

[0045] In this embodiment, the end of the cannula is set in a trumpet shape, which guides the vacuum blood collection tube 6 and makes it easier to insert the vacuum blood collection tube 6 into the cannula.

[0046] Example 3

[0047] like Figure 1 and Figure 2 As shown, the difference between this embodiment and embodiment 1 is that the sleeve 5 and the connecting seat 4 are detachably connected.

[0048] In this embodiment, when an error occurs during the puncture operation or other unexpected situations arise, and it is necessary to operate the tube plug puncture needle 3 and the protective sleeve, the cannula 5 can be removed from the connecting seat 4.

[0049] Specifically, the sleeve 5 is threadedly connected to the connecting seat 4, which enables the sleeve 5 to be detachably installed on the connecting seat 4. The installation and removal operation is simple, and the connection is relatively stable, making it less likely to fall off accidentally.

[0050] Example 4

[0051] like Figure 1 and Figure 2 As shown, the difference between this embodiment and Embodiment 1 is that the sleeve 5 is a transparent structural component.

[0052] In this embodiment, the cannula 5 is made of transparent material, which makes it convenient for medical personnel to observe the internal condition of the cannula 5, thereby making it easier to control the puncture depth and also to observe whether blood leakage occurs.

[0053] Specifically, the sleeve 5 is a structural component made of polypropylene. The sleeve 5 made of polypropylene has good transparency and high mechanical strength, and can maintain its shape when pressed or dropped, thus providing good protection for the tube plug puncture needle 3.

[0054] Example 5

[0055] like Figure 1 , Figure 2 and Figure 3 As shown, the difference between this embodiment and embodiment 1 is that the inner wall of the sleeve 5 is provided with a support washer 52. The support washer 52 is an elastic material structural component. In this embodiment, the support washer 52 is made of rubber and is installed on the inner wall of the sleeve 5 by adhesive.

[0056] In this embodiment, when the tube plug puncture needle 3 punctures the vacuum blood collection tube 6, the cannula 5 is fitted onto the vacuum blood collection tube 6. By adding a support washer 52 of elastic material to the inner wall of the cannula 5, the cannula 5 and the vacuum blood collection tube 6 are relatively stable, thereby indirectly protecting the tube plug puncture needle 3 that is inserted into the vacuum blood collection tube 6, making it less likely for the inserted tube plug puncture needle 3 to fall off.

[0057] Specifically, the support washer 52 is located on the side of the cannula 5 near the connecting seat 4 to prevent the presence of the support washer 52 from affecting the initial puncture operation. When the puncture is about to be completed, the support washer 52 contacts the outer wall of the cannula 5, making the cannula 5 and the vacuum blood collection tube 6 relatively stable. More specifically, the distance between the support washer 52 and the end of the tube plug puncture needle 3 is set to c, 1cm≤c≤2cm. Setting the distance between the support washer 52 and the end of the tube plug puncture needle 3 to more than 1cm ensures that the support washer 52 will only contact the outer wall of the vacuum blood collection tube 6 after the puncture needle has been inserted at least 1cm, ensuring that the support washer 52 will not affect the initial puncture operation. At the same time, setting this distance to less than 2cm ensures that the support washer 52 can reach the outer wall of the vacuum blood collection tube 6 within the stroke of the tube plug puncture needle 3, thus providing a stabilizing effect between the cannula 5 and the vacuum blood collection tube 6.

[0058] 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 puncture-resistant blood collection device, characterized in that, The device includes a blood collection tube (1), one end of which is provided with a venous needle (2) and the other end is provided with a connecting seat (4). A tube plug puncture needle (3) is provided on the connecting seat (4). A cannula (5) is also provided on the connecting seat (4). The inner diameter of the cannula (5) is adapted to the outer diameter of the vacuum blood collection tube (6). An opening is provided at the end of the cannula (5) away from the connecting seat (4). The tube plug puncture needle (3) is located inside the cannula (5). A cap (51) is detachably provided at the end of the cannula (5) where the opening is located.

2. The anti-puncture blood collection device according to claim 1, characterized in that, The distance between the end of the tube plug puncture needle (3) and the opening of the cannula (5) is d, 0.5cm≤d≤1cm.

3. The anti-puncture blood collection device according to claim 1, characterized in that, The sleeve (5) has a flared end with the cap.

4. The anti-puncture blood collection device according to claim 1, characterized in that, The sleeve (5) is detachably connected to the connecting seat (4).

5. The anti-puncture blood collection device according to claim 4, characterized in that, The sleeve (5) is threadedly connected to the connecting seat (4).

6. The anti-puncture blood collection device according to claim 1, characterized in that, The sleeve (5) is a transparent structural component.

7. A puncture-resistant blood collection device according to claim 6, characterized in that, The sleeve (5) is a structural component made of polypropylene.

8. A puncture-resistant blood collection device according to any one of claims 1-7, characterized in that, The inner wall of the sleeve (5) is provided with a support washer (52), which is a structural component made of elastic material.

9. A puncture-resistant blood collection device according to claim 8, characterized in that, The support washer (52) is disposed on the side of the sleeve (5) near the connecting seat (4).

10. A puncture-resistant blood collection device according to claim 9, characterized in that, The distance between the support washer (52) and the end of the tube plug puncture needle (3) is set to c, 1cm≤c≤2cm.

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