Needle puller special for butterfly wing needle of infusion port

Abstract

The utility model provides a needle puller special for an infusion port butterfly wing needle, which comprises a support, the middle of the support is fixedly connected with a supporting block, the supporting block is provided with a connecting hole, the connecting hole is internally in threaded connection with a fixed sleeve, and the fixed sleeve on the upper side and the lower side of the supporting block is connected with a locking nut in a matched mode. The interior of the fixed sleeve is hollow and is in sliding fit with a movable core shaft, the upper end of the movable core shaft extends out of the fixed sleeve and is connected with a lifting handle, the lower end of the movable core shaft extends out of the fixed sleeve and is connected with a needle taking hook, and the needle taking hook comprises an upper-layer needle taking hook and a lower-layer needle taking hook; the spring is used for automatically resetting the movable mandrel after the needle is withdrawn; and a pressing block is arranged at the lower end of the support. The needle withdrawal device can reduce the pricking risk, protect the infusion port base from being damaged, simplify the needle withdrawal operation process, improve the clinical nursing work efficiency, pay attention to the stability and the accuracy, and ensure that the butterfly wing needle can be accurately withdrawn.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a needle remover specially used for butterfly wing needles in infusion ports. Background Art

[0002] In the field of medical care, implantable infusion ports (PORTs) are intravenous infusion devices that can be left in the body for a long time. In recent years, they have been widely used in patients who need long-term infusion and chemotherapy. The infusion port is used in conjunction with a butterfly needle to provide patients with a safe and reliable venous channel, which not only effectively prevents problems such as peripheral phlebitis and vascular sclerosis, but also avoids local tissue necrosis caused by fluid extravasation. However, the inventors of this application found through clinical nursing research that during the manual removal of the butterfly needle, nursing staff often face the risk of needlestick injuries. There are also problems such as damage to the base of the infusion port and difficulty in operation, which are specifically manifested as follows:

[0003] (1) High risk of needle stick injury: During the manual removal of the butterfly needle, the nurse usually needs to hold the infusion port base with one hand and remove the butterfly needle with the other hand. Since the butterfly needle is tightly combined with the infusion port base, it requires a lot of force to remove it. At the moment of forcible removal, due to inertia, the nurse's hand can easily move upward with the butterfly needle, resulting in needle stick injury. This phenomenon occurs frequently in clinical nursing, which not only causes physical harm to the nurse, but also may cause psychological panic and economic losses.

[0004] (2) Damage to the port base: Improper operation during the removal of the butterfly needle may also damage the port base. For example, if the needle is pulled out with too much force or in the wrong direction, the silicone puncture diaphragm at the base may be damaged, thereby affecting the service life and safety of the port.

[0005] (3) Difficulty in operation: The removal of butterfly needles is mostly done manually, which requires nurses to have high operational skills and experience. However, in actual operation, due to factors such as limited field of view, difficulty in accurately controlling the needle insertion angle and posture, it is often difficult to ensure that each operation can be carried out smoothly. This is especially true for nurses who lack clinical experience, such as new employees, interns and trainees, which increases the difficulty of operation and the failure rate.

[0006] To this end, some researchers have developed some auxiliary devices or needle pullers to avoid or reduce the risk of being pricked when removing the needle, but they still have certain defects. For example, the utility model patent with the announcement number CN217908498U discloses a disposable infusion port needle removal auxiliary pressing handpiece, and the distal end of the handpiece is provided with two circular fixing parts, which are used to be placed on the left and right edges of the infusion seat to fix the infusion seat, and play a certain fixing role on the infusion port base. However, the two circular fixing parts cannot fully fix the infusion port base. For those who operate improperly, uneven force may cause unstable fixation, resulting in needle stick injuries and damage to the base. In addition, the auxiliary handpiece is disposable, which increases medical costs. Utility model patent publication number CN220002600U discloses a needle-stick-prevention aid for infusion ports, ensuring seamless needle removal. The device comprises a thin, strip-shaped body with a latch cutout in the middle of one longitudinal side. While this aid reduces needlestick injuries to some extent, it only assists with compression and lacks needle removal functionality. This can still lead to damage to the infusion port due to unskilled operation. Addressing these issues is urgent. Utility Model Content

[0007] In view of the fact that during the manual removal of the butterfly-wing needle of the existing infusion port, nursing staff often face the risk of needle stick injury, and there are also technical problems such as damage to the infusion port base and difficulty in operation, the utility model provides a special needle remover for the butterfly-wing needle of the infusion port.

[0008] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0009] A special needle remover for butterfly wing needles in an infusion port includes a support, a support block is fixedly connected to the middle of the support, a connecting hole is opened on the support block, a fixed sleeve is threadedly connected to the connecting hole, and locking nuts are cooperated and connected to the fixed sleeves on the upper and lower sides of the support block. The internal hollow space of the fixed sleeve is slidably fitted with a movable core shaft, the upper end of the movable core shaft extends out of the fixed sleeve and is connected to a lifting handle, and the lower end of the movable core shaft extends out of the fixed sleeve and is connected to a needle removal hook, the needle removal hook includes an upper needle removal hook and a lower needle removal hook, a spring is provided in the hollow interior of the fixed sleeve and is sleeved on the movable core shaft, and the spring is used to automatically reset the movable core shaft after the needle is removed, and a pressing block is provided at the lower end of the support.

[0010] The infusion port butterfly wing needle special needle extractor provided by the utility model has the following advantages: (1) through the ingenious combination of the lifting handle, the support, the pressing block, the spring and the needle hook, a brand-new needle extraction mechanism is formed, which can ensure that the hands of nursing staff do not directly contact the butterfly wing needle during the needle extraction process, effectively reduces the needle stick injury of the nursing staff due to inertia when the butterfly wing needle is removed, significantly reduces the risk of needle stick injury, thereby ensuring the occupational safety of the nursing staff, reducing the psychological burden of the nursing staff, and reducing the medical cost caused by the needle stick injury; (2) the stable design of the pressing block at the lower end of the support enables the needle extractor to be stably pressed on the skin of the patient during use, prevents the needle extraction failure or discomfort of the patient caused by hand shaking or sliding, and ensures that the bottom of the infusion port is not damaged during the removal of the butterfly wing needle, thereby prolonging the service life of the infusion port, improving the treatment experience of the patient, and reducing the additional medical expenses caused by the damage of the bottom; (3) the spring built in the hollow interior of the fixed sleeve provides necessary rebound force during the needle extraction process, so that the needle extraction process is more stable and labor-saving, and the spring rebound mechanism also ensures that the needle hook can be automatically reset after the needle extraction is completed, facilitating the next use; (4) the needle extractor is simple and easy to use, reduces the requirement for the operation skills and experience of the nursing staff, and can easily complete the needle extraction operation without the nursing staff having superb operation skills and experience, which not only improves the efficiency of clinical nursing work, but also reduces the work burden of the nursing staff; (5) the needle extractor pays attention to the improvement of stability and precision during the design and manufacturing process, ensures accurate removal of the butterfly wing needle, reduces various problems caused by improper operation, and further improves the quality and safety of clinical nursing work.

[0011] Further, the lifting handle is provided with anti-skid textures.

[0012] Further, the interior of the fixed sleeve is a through hole with a large lower hole and a small upper hole, the movable mandrel is a stepped shaft with a thick lower part and a thin upper part, the upper end of the spring abuts against the step formed between the large hole and the small hole of the through hole, and the lower end of the spring abuts against the stepped surface of the stepped shaft.

[0013] Further, the pressing block is provided with a notch for automatically resetting the movable mandrel and then placing the needle hook. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1This is a schematic diagram of the upper side structure of the special needle remover for the butterfly wing needle of the infusion port provided by the utility model when it is in use.

[0015] Figure 2 It is a longitudinal cross-sectional schematic diagram of the needle remover specially used for butterfly wing needles of an infusion port provided by the utility model when in use.

[0016] Figure 3 This is a bottom side structural schematic diagram of the infusion port butterfly wing needle special needle remover provided by the utility model when in use.

[0017] In the figure, 1. support; 2. support block; 3. fixed sleeve; 4. locking nut; 5. movable core shaft; 6. lifting handle; 7. needle removal hook; 71. upper needle removal hook; 72. lower needle removal hook; 8. spring; 9. pressing block; 91. notch. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below with reference to specific illustrations.

[0019] In the description of the present invention, it should be understood that the terms "longitudinal," "radial," "length," "width," "thickness," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0020] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0021] Please refer to Figures 1 to 3The utility model provides a special needle extractor for infusion port butterfly wing needle, including support 1, support 1 is as the support basis of whole needle extractor, is designed as the structure of firm and easy to hold, and it is convenient for medical staff to operate, the middle part fixedly connected with support block 2 of support 1 is established, is set up in the connecting hole of support block 2, is screw -threaded with fixed sleeve 3 in the connecting hole, the fixed sleeve 3 is connected with the locking nut 4 of the fixed sleeve 3 upper and lower sides of support block 2, and the inside hollow of fixed sleeve 3 is slidably fitted with movable mandrel 5, the upper end of movable mandrel 5 is connected with the pull handle 6 of fixed sleeve 3, and the lower end of movable mandrel 5 is connected with the needle hook 7 of fixed sleeve 3, the needle hook 7 includes upper layer needle hook 71 and lower layer needle hook 72, and the upper layer needle hook 71 and lower layer needle hook 72 are used to clamp the two wings of infusion port butterfly wing needle when taking needle, ensure that the needle will not fall off or cause additional injury in the process of pulling out needle, the hollow inside of fixed sleeve 3 is equipped with spring 8 on movable mandrel 5, the spring 8 is used to automatically reset movable mandrel 5 after pulling out needle, and the lower end of support 1 is provided with pressing block 9.

[0022] The infusion port butterfly wing needle special needle extractor provided by the utility model is used, first, the support is held, the bevel is cut into the junction between the butterfly wing needle and the human skin, the pressing block at the lower end of the support is placed on the skin with the infusion port, and the left hand is placed on the support to play a fixing role; then the upper and lower layers of needle taking hooks clamp the two wings of the infusion port butterfly wing needle; then the right thumb and index finger hold the lifting handle and pull vertically upward to take out the needle. Compared with the prior art, the infusion port butterfly wing needle special needle extractor provided by the utility model has the following advantages: (1) through the ingenious combination of the lifting handle, the support, the pressing block, the spring and the needle taking hook, a brand-new needle pulling mechanism is formed, which can ensure that the hands of nursing personnel do not directly contact the butterfly wing needle during the needle pulling process, effectively reduces the needle stick injury of nursing personnel due to inertia when the butterfly wing needle is pulled out, significantly reduces the risk of needle stick injury, thereby ensuring the occupational safety of nursing personnel, reducing the psychological burden of nursing personnel, and reducing the medical cost caused by needle stick injury; (2) the stable design of the pressing block at the lower end of the support enables the needle extractor to be stably pressed on the skin of the patient during use, prevents the needle pulling failure or discomfort of the patient caused by hand shaking or sliding, and ensures that the infusion port base is not damaged during the pulling out of the butterfly wing needle, thereby prolonging the service life of the infusion port, improving the treatment experience of the patient, and reducing the additional medical expenses caused by the damage of the base; (3) the spring built in the hollow interior of the fixed sleeve provides necessary rebound force during the needle pulling process, so that the needle pulling process is more stable and labor-saving, and the spring rebound mechanism also ensures that the needle taking hook can be automatically reset after the needle pulling is completed, facilitating the next use; (4) the needle extractor is simple and easy to use, reduces the requirement for the operation skills and experience of nursing personnel, and can easily complete the needle pulling operation without the nursing personnel having superb operation skills and experience, which not only improves the efficiency of clinical nursing work, but also reduces the work burden of nursing personnel; (5) the needle extractor pays attention to the improvement of stability and precision during the design and manufacturing process, ensures accurate and correct pulling out of the butterfly wing needle, reduces various problems caused by improper operation, and further improves the quality and safety of clinical nursing work.

[0023] As a specific embodiment, the lifting handle 6 is provided with anti-skid textures, so that the hands can be stable and not slip during the needle pulling operation.

[0024] As a specific embodiment, please refer to Figure 2As shown, the internal hollow space of the fixed sleeve 3 is a through hole that is small at the top and large at the bottom, and the movable core shaft 5 is a stepped shaft that is thin at the top and thick at the bottom. The upper end of the spring 8 is against the step formed between the large hole and the small hole of the through hole, and the lower end of the spring 8 is against the stepped surface of the stepped shaft. Therefore, when the lifting handle 6 is held and the movable core shaft 5 is pulled vertically upward, the step at the upper end and the stepped surface at the lower end of the spring 8 will compress the spring 8, making the needle pulling process smoother and more labor-saving. At the same time, when the lifting handle 6 is released, the rebound force of the spring can automatically reset the movable core shaft 5.

[0025] As a specific example, please refer to Figure 1 and Figure 2 As shown, the pressing block 9 is provided with a notch 91 for lowering the needle removal hook 7 after the movable core shaft 5 is automatically reset. Therefore, the movable core shaft 5 can be lowered into the notch 91 and contact the patient's skin after automatically resetting, so that the upper needle removal hook 71 and the lower needle removal hook 72 of the needle removal hook 7 can be better used to clamp the two wings of the butterfly wing needle of the infusion port.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A needle remover for butterfly wing needles in infusion ports, characterized in that: The invention comprises a support (1), wherein the middle part of the support (1) is fixedly connected to a support block (2), a connecting hole is opened on the support block (2), a fixing sleeve (3) is threadedly connected to the inner thread of the connecting hole, and the fixing sleeves (3) on the upper and lower sides of the support block (2) are matched with locking nuts (4), and the inner hollow of the fixing sleeve (3) is slidably matched with a movable core shaft (5), the upper end of the movable core shaft (5) extends out of the fixing sleeve (3) and is connected to a lifting handle (6), and the lower end of the movable core shaft (5) extends out of the fixing sleeve (3) and is connected to a needle removal hook (7), and the needle removal hook (7) includes an upper needle removal hook (71) and a lower needle removal hook (72), and the hollow interior of the fixing sleeve (3) is provided with a spring (8) sleeved on the movable core shaft (5), and the spring (8) is used to automatically reset the movable core shaft (5) after the needle is removed, and a pressing block (9) is provided at the lower end of the support (1).

2. The needle remover for butterfly wing needle of infusion port according to claim 1, characterized in that: The lifting handle (6) is provided with an anti-slip texture.

3. The needle remover for butterfly wing needle of infusion port according to claim 1, characterized in that: The interior of the fixed sleeve (3) is hollow and is a through hole that is small at the top and large at the bottom. The movable core shaft (5) is a stepped shaft that is thin at the top and thick at the bottom. The upper end of the spring (8) abuts against a step formed between the large hole and the small hole of the through hole, and the lower end of the spring (8) abuts against a stepped surface of the stepped shaft.

4. The needle remover for butterfly wing needle of infusion port according to claim 1, characterized in that: The pressing block (9) is provided with a notch (91) for lowering the needle hook after the movable core shaft (5) is automatically reset.

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