Blood taking needle protecting sleeve

Abstract

The utility model discloses a blood taking needle protective sleeve, two ends of the protective sleeve are provided with a first protective hole and a second protective hole, a blood taking needle is inserted in the first protective hole, a puncture needle is inserted in the second protective hole, and a hose is connected between the blood taking needle and the puncture needle. The length of the hose is larger than the total length of the protecting sleeve and the blood taking needle and the puncture needle at the two ends, a fixing hole is formed in the protecting sleeve, the middle section of the hose is located in the fixing hole, the two ends of the fixing hole are each provided with a penetrating hole and a tube outlet, the two ends of the middle section of the hose extend out of the tube outlets, and the axis of the penetrating holes and the axis of the fixing hole are collinear. A certain angle is formed between the tube outlet and the axis of the fixing hole, and a certain hose is reserved between the blood taking needle and the protective sleeve during blood taking operation, so that blood taking operation is facilitated, and the piercing angle of the blood taking needle is not affected.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, and more specifically relates to a protective cover for blood collection needles. Background Technology

[0002] Blood collection needles are medical devices used to collect venous blood from patients during blood tests. A common blood collection needle consists of two needles connected by a tubing. When the needle is unopened, each needle is covered with a protective cap. The caps are removed before use. After use, medical staff are usually required to replace the caps before discarding the needle in a designated medical device waste bin. Therefore, medical staff should pay attention to the placement of the caps when removing them for the first time to avoid losing them. When replacing the caps, avoid contact between the hands and the needles to prevent the needle tip from piercing the protective gloves and causing any residual blood on the needle to come into direct contact with the skin.

[0003] Existing patent CN111904436A discloses a novel blood collection needle sheath, which has protective covers on both ends of the needle and a storage tube at one end of the blood collection needle. After blood collection, a push rod is moved to slide out of the push rod groove in the storage tube. The push rod rotates 90 degrees and enters the strip-shaped opening of the storage tube. Pushing the push rod further inward causes it to slide within the strip-shaped opening, thereby pulling the blood collection needle into the blood collection needle storage tube. An elastic block prevents the push rod from rebounding. The part of the tubing connected to the blood collection needle is folded and enters the receiving cavity to prevent blood from flowing out of the tubing, thus avoiding blood contamination and the spread of disease, and protecting the safety of medical personnel.

[0004] However, its large diameter can affect the insertion angle of the blood collection needle when it punctures the patient's skin, posing a risk of the blood collection needle puncturing a blood vessel. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a protective sleeve for blood collection needles. During blood collection, it does not affect the insertion angle of the needle, and simultaneously isolates the needle to prevent blood from leaking out of the tubing.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a protective sleeve for blood collection needles, wherein the protective sleeve has a first protective hole and a second protective hole at both ends, a blood collection needle is inserted into the first protective hole, a puncture needle is inserted into the second protective hole, a flexible tube is connected between the blood collection needle and the puncture needle, the length of the flexible tube is greater than the total length of the protective sleeve plus the lengths of the blood collection needles and the puncture needles at both ends, a fixing hole is provided on the protective sleeve, the middle section of the flexible tube is located in the fixing hole, both ends of the fixing hole are provided with a through hole and an outlet, both ends of the middle section of the flexible tube extend from the outlet, the axis of the through hole is collinear with the axis of the fixing hole, and the outlet is at a certain angle to the axis of the fixing hole.

[0007] Furthermore, the axis of the first protective hole is collinear with the axis of the second protective hole, and a partition is provided between the first protective hole and the second protective hole.

[0008] Furthermore, the first protective hole and the second protective hole are located on the same side of the fixing hole, and the axis of the fixing hole is parallel to the axis of the first protective hole and the second protective hole.

[0009] Furthermore, a friction layer is provided at the opening of the first protective hole and the second protective hole, and a connector is provided between the blood collection needle and the tubing and between the puncture needle and the tubing. The friction layer and the connector rub against each other to fix the blood collection needle and the puncture needle in the first protective hole and the second protective hole.

[0010] Furthermore, an elastic sealing membrane layer is provided inside the perforation.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: when the blood collection needle is not in use, the blood collection needle and the puncture needle are placed in the first protective hole and the second protective hole respectively; when in use, the blood collection needle and the puncture needle are taken out. Since the total length of the tubing is relatively long, a certain amount of tubing will remain between the blood collection needle and the protective sleeve, which facilitates the blood collection operation and will not affect the insertion angle of the blood collection needle; after the blood collection is completed, the blood collection needle is inserted into the middle section of the tubing, which can prevent the blood in the tubing from flowing out and isolate the blood collection needle to avoid causing secondary damage. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the blood collection needle protective sleeve of this utility model when storing blood collection needles and puncture needles;

[0013] Figure 2 This is a schematic diagram of the structure of the blood collection needle protective sleeve of this utility model when the blood collection needle is removed;

[0014] Figure 3 This is a schematic diagram of the structure of the blood collection needle protective sleeve after use.

[0015] Reference numerals: 1. Protective sleeve; 2. First protective hole; 3. Second protective hole; 4. Tube; 5. Fixing hole; 6. Perforation; 7. Outlet; 8. Partition; 9. Elastic sealing membrane; 10. Blood collection needle; 11. Puncture needle. Detailed Implementation

[0016] In the description of this utility model, it should be noted that the directional terms such as "center", "horizontal (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and 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. They should not be construed as limiting the specific protection scope of this utility model.

[0017] 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. Thus, the use of "first" and "second" to define a feature may explicitly or implicitly include one or more of that feature. In the description of this utility model, "several" or "a number" means two or more, unless otherwise explicitly specified.

[0018] Reference Figures 1 to 3 The present invention will be further described below.

[0019] A protective sleeve for blood collection needles is provided. The protective sleeve 1 has a first protective hole 2 and a second protective hole 3 at both ends. A blood collection needle 10 is inserted into the first protective hole 2, and a puncture needle 11 is inserted into the second protective hole 3. A flexible tube 4 is connected between the blood collection needle 10 and the puncture needle 11. The length of the flexible tube 4 is greater than the total length of the protective sleeve 1 plus the lengths of the blood collection needle 10 and the puncture needle 11 at both ends. The protective sleeve 1 has a fixing hole 5. The middle section of the flexible tube 4 is located in the fixing hole 5. Both ends of the fixing hole 5 have a through hole 6 and an outlet 7. Both ends of the middle section of the flexible tube 4 extend out from the outlet 7. The axis of the through hole 6 is collinear with the axis of the fixing hole 5, and the outlet 7 is at a certain angle to the axis of the fixing hole 5.

[0020] like Figure 1 As shown, when the blood collection needle 10 is not in use, the blood collection needle 10 and the puncture needle 11 are placed in the first protective hole 2 and the second protective hole 3 respectively, and sealed in a packaging bag; when needed, such as Figure 2 As shown, the blood collection needle 10 and the puncture needle 11 are removed from the first protective hole 2 and the second protective hole 3, respectively. Because the total length of the tubing 4 is relatively long, even if the middle section is inside the protective sleeve 1, a certain amount of tubing 4 will still remain between the middle section and the blood collection needle 10, thus facilitating the blood collection operation and not affecting the insertion angle of the blood collection needle 10; after blood collection, as... Figure 3As shown, the tip of the blood collection needle 10 is pointed towards the perforation 6, and then inserted into the perforation 6, so that the blood collection needle 10 is inserted into the middle section of the tubing 4. Since the tubing 4 itself has a certain degree of flexibility and elasticity, when the blood collection needle 10 punctures the wall of the tubing 4, the wall of the tubing 4 can seal the puncture site through its own elasticity, thereby preventing the blood in the tubing 4 from flowing out. At the same time, after the blood collection needle 10 is inserted into the tubing 4, it can isolate the blood collection needle 10 and avoid causing secondary damage.

[0021] Specifically, the puncture needle 11 is used in the same way as the blood collection needle 10.

[0022] Specifically, the diameter of the fixing hole 5 is the same as the outer diameter of the hose 4, and the middle section of the hose 4 located in the fixing hole 5 can maintain a straight state through the fixing hole 5.

[0023] Specifically, since there is friction between the outer surface of the tubing 4 and the wall of the fixing hole 5, the middle section of the tubing 4 will not easily move within the fixing hole 5. However, in order to prevent the middle section of the tubing 4 from moving due to pulling the blood collection needle 10 or the puncture needle 11, a buckling mechanism can be set at the outlet 7 to apply a certain pressure to the tubing 4, causing a slight deformation of its cross-section and increasing the friction between it and the protective sleeve 1; or glue can be directly applied between the outer surface of the tubing 4 and the fixing hole 5 so that the middle section of the tubing 4 is directly bonded to the fixing hole 5.

[0024] like Figure 1 As shown, in this example, preferably, the axis of the first protective hole 2 is collinear with the axis of the second protective hole 3, and a partition 8 is provided between the first protective hole 2 and the second protective hole 3.

[0025] like Figure 1 As shown, in this example, preferably, the first protective hole 2 and the second protective hole 3 are located on the same side of the fixing hole 5, and the axis of the fixing hole 5 is parallel to the axis of the first protective hole 2 and the second protective hole 3.

[0026] In this preferred embodiment, a friction layer is provided at the opening of the first protective hole 2 and the second protective hole 3. Connectors are provided between the blood collection needle 10 and the tubing 4 and between the puncture needle 11 and the tubing 4. The friction layer and the connectors rub against each other to fix the blood collection needle 10 and the puncture needle 11 in the first protective hole 2 and the second protective hole 3.

[0027] Specifically, both connectors are equipped with positioning structures. The connector of the blood collection needle 10 is equipped with a handle (the part held by medical staff during blood collection) for piercing the skin. The connector of the puncture needle 11 is equipped with a step, and corresponding positioning grooves are provided on the first protective hole 2 and the second protective hole 3 so that the blood collection needle 10 and the puncture needle 11 can be positioned and inserted.

[0028] Specifically, a latching mechanism, such as a spring latch or a hinge latch, can be provided between the connector and the protective sleeve 1.

[0029] like Figure 1 As shown in this example, preferably, the perforation 6 is provided with an elastic sealing membrane 9 layer.

[0030] Specifically, the tip of the blood collection needle 10 first pierces the elastic sealing layer and then the tubing 4. The elastic sealing layer serves the same purpose as the tubing 4 after it is pierced, while also increasing the friction on the blood collection needle 10 to prevent it from being easily pulled out.

[0031] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A protective sleeve for blood collection needles, characterized in that: The protective sleeve has a first protective hole and a second protective hole at both ends. A blood collection needle is inserted into the first protective hole, and a puncture needle is inserted into the second protective hole. A flexible tube is connected between the blood collection needle and the puncture needle. The length of the flexible tube is greater than the total length of the protective sleeve plus the blood collection needle and the puncture needle at both ends. The protective sleeve has a fixing hole. The middle section of the flexible tube is located in the fixing hole. Both ends of the fixing hole have a through hole and an outlet. Both ends of the middle section of the flexible tube extend from the outlet. The axis of the through hole is collinear with the axis of the fixing hole. The outlet is at a certain angle to the axis of the fixing hole.

2. The protective sleeve for blood collection needles according to claim 1, characterized in that: The axis of the first protective hole is collinear with the axis of the second protective hole, and a partition is provided between the first protective hole and the second protective hole.

3. The protective sleeve for blood collection needles according to claim 1, characterized in that: The first protective hole and the second protective hole are located on the same side of the fixing hole, and the axis of the fixing hole is parallel to the axis of the first protective hole and the second protective hole.

4. The protective sleeve for blood collection needles according to claim 1, characterized in that: A friction layer is provided at the opening of the first protective hole and the second protective hole. Connectors are provided between the blood collection needle and the tubing and between the puncture needle and the tubing. The friction layer and the connectors rub against each other to fix the blood collection needle and the puncture needle in the first protective hole and the second protective hole.

5. The protective sleeve for blood collection needles according to claim 1, characterized in that: An elastic sealing membrane layer is provided inside the perforation.

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