A puncture-resistant blood collection needle structure

Abstract

This utility model relates to the field of medical device technology, and in particular to a puncture-proof blood collection needle structure, including a connecting tube. A blood collection needle body is located at the right end of the connecting tube, and a puncture needle is located at the left end of the connecting tube. A first protective mechanism is provided on the left side of the outer surface of the connecting tube, and the first protective mechanism is movably sleeved on the outer surface of the puncture needle. A protective sleeve is provided on the outer surface of the blood collection needle body, and the outer surface of the protective sleeve has five first anti-slip protrusions. This puncture-proof blood collection needle structure allows the first protective sleeve to move to the right under external force, exposing the puncture needle. After use, when the external force is removed, the spring force returns the first protective sleeve to its original position, causing it to move to the left and re-enclose the puncture needle. This effectively prevents accidental puncture injuries to medical staff, patients, or other personnel during blood collection. The second protective mechanism provides convenient and timely protection for the blood collection needle body, further preventing accidental puncture injuries.

Description

Technical Field

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

[0002] A blood collection needle is an instrument used in medical testing to collect blood samples. It generally consists of a puncture needle, a blood collection needle, and a connecting tube connecting the puncture needle and the blood collection needle. During use, the blood collection needle is inserted into a vein, and the puncture needle is inserted into the blood collection tube. Blood collection is achieved through negative pressure. However, after use, the puncture needle and the blood collection needle are directly exposed, which can easily injure medical staff. To address this, a puncture-proof blood collection needle structure was designed. However, the current puncture-proof blood collection needle structure still has poor safety performance and is relatively cumbersome to operate. Therefore, we are introducing a new puncture-proof blood collection needle structure. Utility Model Content

[0003] The main purpose of this invention is to provide a puncture-proof blood collection needle structure, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A puncture-resistant blood collection needle structure includes a connecting tube, a blood collection needle body at the right end of the connecting tube, a puncture needle at the left end of the connecting tube, a first protective mechanism on the left side of the outer surface of the connecting tube, the first protective mechanism being movably sleeved on the outer surface of the puncture needle, a protective sleeve on the outer surface of the blood collection needle body, five first anti-slip protrusions on the outer surface of the protective sleeve, and a second protective mechanism on the right side of the outer surface of the connecting tube.

[0006] Preferably, the first protective mechanism includes a fixed sleeve and a first protective sleeve. The fixed sleeve is fixedly installed on the left side of the outer surface of the connecting pipe. A spring is fixedly installed on the inner right wall of the fixed sleeve. A driving ring is movably installed on the inner surface of the fixed sleeve. An extension plate is fixedly installed on the left end of the driving ring. A driving plate is provided on the outer surface of both extension plates. The first protective sleeve is movably sleeved on the outer surface of the fixed sleeve. The outer surfaces of both driving plates are fixedly connected to the inner surface of the first protective sleeve through connecting blocks.

[0007] Preferably, the right end of the drive ring is fixedly connected to the left side of the outer surface of the spring.

[0008] By adopting the above technical solution, the elastic force of the spring can be transmitted to the driving ring.

[0009] Preferably, the first protective sleeve is movably fitted onto the outer surface of the puncture needle.

[0010] By adopting the above technical solution, it is convenient to effectively protect the puncture needle.

[0011] Preferably, the length of the extension plate is greater than the length of the puncture needle.

[0012] By adopting the above technical solution, the puncture needle can be completely covered.

[0013] Preferably, the second protective mechanism includes a circular retaining ring and a second protective sleeve. The right end of the circular retaining ring is provided with a circular groove. The upper and lower parts of the outer surface of the second protective sleeve are provided with handles. A limiting plate is fixedly installed on the left side of the outer surface of the second protective sleeve. A circular locking block is provided at the left end of the limiting plate. The second protective sleeve is movably locked inside the circular groove by the circular locking block.

[0014] By adopting the above technical solution, the second protective sleeve can be firmly connected to the circular retaining ring through the cooperation of the circular retaining ring, which facilitates installation and disassembly. The second protective sleeve has a protective function, and the handle makes it easy to push the second protective sleeve to move.

[0015] Preferably, the circular retaining ring is fixedly installed on the outer surface of the connecting pipe, the second protective sleeve is movably sleeved on the outer surface of the connecting pipe, and the inner surface of the second protective sleeve is movably fitted together with the outer surface of the connecting pipe.

[0016] By adopting the above technical solution, the second protective sleeve can slide easily on the connecting pipe, ensuring that the friction between the protective sleeve and the connecting pipe is moderate during the movement of the protective sleeve, so that it is neither too loose and causes the protection to fail, nor too tight and makes it difficult to operate.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. In this utility model, when a puncture needle is needed, an external force is applied to the first protective sleeve, causing it to move to the right. The first protective sleeve, through the connecting block, drives the driving plate to move to the right, which in turn drives the extension plate and the driving ring to move to the right against the elastic force of the spring. As the first protective sleeve moves to the right, the puncture needle gradually protrudes, making it easier for the puncture needle to be inserted into the blood collection tube. When the puncture needle is used up, the external force applied to the first protective sleeve is removed. At this time, the spring, due to its own elastic restoring force, pushes the driving ring to move to the left. The driving ring, through the extension plate, the driving plate, and the connecting block, drives the first protective sleeve to move to the left, re-wrapping the puncture needle and restoring it to its initial protective state. This method is convenient to operate and can effectively prevent accidental puncture injuries to medical staff, patients, or other personnel.

[0019] 2. In this utility model, the handle facilitates the insertion of the blood collection needle at the right end into the patient's body, making it convenient to perform blood collection. After blood collection, by grasping the handle on the outer surface of the second protective cover and applying external force, the second protective cover is pulled to the right, allowing it to smoothly detach from the circular retaining ring. By pushing the second protective cover to the right, the blood collection needle on the right side can be protected, effectively preventing accidental punctures to medical staff, patients, or other personnel. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the anti-puncture blood collection needle of this utility model;

[0021] Figure 2 This is a schematic diagram of the blood collection needle structure of the anti-puncture blood collection needle structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the overall structure of the first protective mechanism of the anti-puncture blood collection needle structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the overall structure of the second protective mechanism of the anti-puncture blood collection needle structure of this utility model.

[0024] In the diagram: 1. Connecting tube; 2. Blood collection needle; 3. Puncture needle; 4. First protective mechanism; 41. Fixing sleeve; 42. Spring; 43. Drive ring; 44. Extension; 45. Drive plate; 46. First protective sleeve; 5. Protective sleeve; 6. First anti-slip protrusion; 7. Second protective mechanism; 71. Circular retaining ring; 72. Circular retainer; 73. Second protective sleeve; 74. Handle; 75. Limiting plate; 76. Circular retaining block. Detailed Implementation

[0025] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0026] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] Please see Figure 1-4 This utility model provides a technical solution:

[0029] A puncture-resistant blood collection needle structure includes a connecting tube 1, a blood collection needle body 2 at the right end of the connecting tube 1, a puncture needle 3 at the left end of the connecting tube 1, a first protective mechanism 4 on the left side of the outer surface of the connecting tube 1, the first protective mechanism 4 being movably sleeved on the outer surface of the puncture needle 3, a protective sleeve 5 on the outer surface of the blood collection needle body 2, five first anti-slip protrusions 6 on the outer surface of the protective sleeve 5, and a second protective mechanism 7 on the right side of the outer surface of the connecting tube 1.

[0030] In this embodiment, the first protective mechanism 4 includes a fixed sleeve 41 and a first protective sleeve 46. The fixed sleeve 41 is fixedly installed on the left side of the outer surface of the connecting tube 1. A spring 42 is fixedly installed on the inner right wall of the fixed sleeve 41. A driving ring 43 is movably installed on the inner surface of the fixed sleeve 41. An extension plate 44 is fixedly installed on the left end of the driving ring 43. A driving plate 45 is provided on the outer surface of both extension plates 44. The first protective sleeve 46 is movably sleeved on the outer surface of the fixed sleeve 41. The outer surfaces of both driving plates 45 are fixedly connected to the inner surface of the first protective sleeve 46 through connecting blocks. The right end of the driving ring 43 is fixedly connected to the left side of the outer surface of the spring 42. The first protective sleeve 46 is movably sleeved on the outer surface of the puncture needle 3. The length of the extension plate 44 is greater than the length of the puncture needle 3.

[0031] Through the above scheme: In the unused state, the spring 42 is in a naturally extended state. At this time, the fixing sleeve 41 is stably fixed on the left side of the outer surface of the connecting tube 1. When the puncture needle 3 needs to be used, an external force is applied to the first protective sleeve 46, causing it to move to the right. The first protective sleeve 46 drives the driving plate 45 to move to the right through the connecting block, which in turn drives the extension plate 44 and the driving ring 43 to move to the right against the elastic force of the spring 42. As the first protective sleeve 46 moves to the right, the puncture needle 3 is gradually exposed, making it easier for the puncture needle 3 to be inserted into the blood collection tube. When the puncture needle 3 is used up, the external force applied to the first protective sleeve 46 is removed. At this time, the spring 42, due to its own elastic restoring force, pushes the driving ring 43 to move to the left. The driving ring 43 drives the first protective sleeve 46 to move to the left through the extension plate 44, the driving plate 45, and the connecting block, re-wrapping the puncture needle 3 and restoring it to the initial protective state. This can effectively prevent accidental puncture injuries to medical staff, patients, or other personnel, reducing the risk of occupational exposure and accidental injury.

[0032] In this embodiment, the second protective mechanism 7 includes a circular retaining ring 71 and a second protective sleeve 73. The right end of the circular retaining ring 71 is provided with a circular retaining groove 72. The upper and lower parts of the outer surface of the second protective sleeve 73 are provided with handles 74. A limiting plate 75 is fixedly installed on the left side of the outer surface of the second protective sleeve 73. A circular retaining block 76 is provided on the left end of the limiting plate 75. The second protective sleeve 73 is movably engaged in the inner part of the circular retaining groove 72 through the circular retaining block 76. The circular retaining ring 71 is fixedly installed on the outer surface of the connecting pipe 1. The second protective sleeve 73 is movably sleeved on the outer surface of the connecting pipe 1. The inner surface of the second protective sleeve 73 is movably fitted with the outer surface of the connecting pipe 1.

[0033] With the above scheme: In the initial state, the second protective sleeve 73 is engaged in the circular groove 72 of the circular retaining ring 71 by the circular retaining block 76. The blood collection needle body 2 at the right end can be easily inserted into the patient's body through the handle 74, which facilitates blood collection. After blood collection, by holding the handle 74 on the outer surface of the second protective sleeve 73 and applying external force, the second protective sleeve 73 is pulled to the right, so that the second protective sleeve 73 can be easily detached from the circular retaining ring 71. By pushing the second protective sleeve 73 to the right, the blood collection needle body 2 on the right side can be protected, which can effectively prevent accidental puncture injuries to medical staff, patients or other personnel.

[0034] It should be noted that this utility model is a structure for a puncture-proof blood collection needle. During use, when blood collection is required, the protective sleeve 5 is removed to expose the blood collection needle body 2. The right end of the blood collection needle body 2 can be easily inserted into the patient's body with the help of the handle 74, facilitating blood collection. Since the second protective sleeve 73 is initially engaged in the circular groove 72 of the circular retaining ring 71 by the circular retaining block 76, after blood collection, the handle 74 on the outer surface of the second protective sleeve 73 is grasped and an external force is applied to pull it to the right, allowing the second protective sleeve 73 to detach smoothly from the circular retaining ring 71. Then, the second protective sleeve 73 is pushed to the right to collect blood from the right side. The needle body 2 provides protection, effectively preventing accidental punctures to medical staff, patients, or other personnel. When the puncture needle 3 needs to be inserted into the blood collection tube, an external force is applied to the first protective sleeve 46, causing it to move to the right. The first protective sleeve 46 drives the connecting block, which in turn drives the driving plate 45 to move to the right. The movement of the driving plate 45, in turn, causes the extension plate 44 and the driving ring 43 to move to the right against the elastic force of the spring 42. As the first protective sleeve 46 moves to the right, the puncture needle 3 gradually protrudes, facilitating insertion into the blood collection tube. After the puncture needle 3 is used, the external force applied to the first protective sleeve 46 is removed. At this time, the spring 42, with its own elastic restoring force, pushes the driving ring 43 to the left. The driving ring 43 then drives the first protective sleeve 46 to the left through the extension plate 44, the driving plate 45, and the connecting block, re-enclosing the puncture needle 3 and restoring the initial protective state. This effectively avoids accidental punctures to medical staff, patients, or other personnel, reducing the risk of occupational exposure and accidental injury.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A structure of a blood taking needle for preventing puncture, comprising a connecting tube (1), characterized in that: The right end of the connecting tube (1) is provided with a blood collection needle body (2), the left end of the connecting tube (1) is provided with a puncture needle (3), the left side of the outer surface of the connecting tube (1) is provided with a first protective mechanism (4), the first protective mechanism (4) is movably sleeved on the outer surface of the puncture needle (3), the outer surface of the blood collection needle body (2) is provided with a protective sleeve (5), the outer surface of the protective sleeve (5) is provided with five first anti-slip protrusions (6), and the right side of the outer surface of the connecting tube (1) is provided with a second protective mechanism (7). The first protective mechanism (4) includes a fixed sleeve (41) and a first protective sleeve (46). The fixed sleeve (41) is fixedly installed on the left side of the outer surface of the connecting pipe (1). A spring (42) is fixedly installed on the inner right wall of the fixed sleeve (41). A driving ring (43) is movably installed on the inner surface of the fixed sleeve (41). An extension plate (44) is fixedly installed on the left end of the driving ring (43). A driving plate (45) is provided on the outer surface of both extension plates (44). The first protective sleeve (46) is movably sleeved on the outer surface of the fixed sleeve (41). The outer surfaces of both driving plates (45) are fixedly connected to the inner surface of the first protective sleeve (46) through connecting blocks.

2. The anti-puncture blood collection needle structure according to claim 1, characterized in that: The right end of the drive ring (43) is fixedly connected to the left side of the outer surface of the spring (42).

3. The anti-puncture blood collection needle structure according to claim 1, characterized in that: The first protective sleeve (46) is movably fitted onto the outer surface of the puncture needle (3).

4. The anti-puncture blood collection needle structure according to claim 1, characterized in that: The length of the extension plate (44) is greater than the length of the puncture needle (3).

5. The anti-puncture blood collection needle structure according to claim 1, characterized in that: The second protective mechanism (7) includes a circular retaining ring (71) and a second protective sleeve (73). The right end of the circular retaining ring (71) is provided with a circular groove (72). The upper and lower parts of the outer surface of the second protective sleeve (73) are provided with handles (74). A limiting plate (75) is fixedly installed on the left side of the outer surface of the second protective sleeve (73). A circular locking block (76) is provided on the left end of the limiting plate (75). The second protective sleeve (73) is movably locked into the inside of the circular groove (72) by the circular locking block (76).

6. The anti-puncture blood collection needle structure according to claim 5, characterized in that: The circular retaining ring (71) is fixedly installed on the outer surface of the connecting pipe (1), and the second protective sleeve (73) is movably sleeved on the outer surface of the connecting pipe (1). The inner surface of the second protective sleeve (73) is movably attached to the outer surface of the connecting pipe (1).

Images