Elbow venous infusion needle

Abstract

The utility model relates to medical instrument technical field relates to a bend intravenous infusion needle, include: infusion needle, infusion pipe and connecting joint connected in proper order, the side of infusion pipe is close to infusion needle is provided with fixed establishment, the side of infusion pipe is close to connecting joint is provided with water stop clamp, the infusion needle includes with infusion pipe connection's curved needle and sets up in the horizontal needle of curved needle tail end, the horizontal needle tail end is provided with the oblique puncture part, the connecting joint includes with infusion pipe connection's connecting seat and sets up in the cap of connecting seat tail end, is provided with the furrow on the cap. The utility model infusion needle adapts human body skin camber, makes needle head and puncture part close more closely, reduces the deviation rate of puncture, arc passivation puncture part will " cut type " puncture is converted into " expansion type " separation, reduces blood vessel wall damage area, blood vessel spasm and thrombosis risk reduces obviously, reduces the incidence rate of blood vessel inflammation after infusion.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and specifically to a curved intravenous infusion needle. Background Technology

[0002] Curved intravenous infusion needles are mainly suitable for intravenous infusion, drug administration, blood drawing, and blood transfusion via implantable drug delivery devices (hereinafter referred to as "ports"). Conventional intravenous infusion needles, due to the drawbacks of their needle tip structure, can cause some abrasive damage to the tissue or the puncture septum of the port during puncture. Utility Model Content

[0003] This invention provides a bent-head intravenous infusion needle to address the problems of existing technologies.

[0004] The objective of this utility model can be achieved through the following technical solution: A curved intravenous infusion needle, comprising: an infusion needle, an infusion tubing, and a connecting connector connected in sequence, wherein a fixing mechanism is provided on the side of the infusion tubing near the infusion needle, and a water-stopping clamp is provided on the side of the infusion tubing near the connecting connector; the infusion needle includes a curved needle connected to the infusion tubing and a horizontal needle provided at the end of the curved needle, wherein an inclined puncture portion is provided at the end of the horizontal needle; the connecting connector includes a connecting seat connected to the infusion tubing and a protective cap provided at the end of the connecting seat, wherein grooves are provided on the protective cap.

[0005] In a further improvement, the infusion tubing includes infusion tubing one or infusion tubing two. Infusion tubing one has both ends connected to the infusion needle and the connecting connector, respectively. Infusion tubing two includes a front infusion tubing, a three-way connector, and a rear infusion tubing. Two of the three-way connectors are connected to the front infusion tubing and the rear infusion tubing two, respectively, and a drug inlet is connected to the third connector.

[0006] In a further improvement, the fixing mechanism includes a fixing seat sleeved on the infusion tube and butterfly wing adhesive parts disposed on both sides of the fixing seat.

[0007] In a further improvement, a sponge pad is provided at the lower end of the fixed base, and an air exchange groove is provided through the middle of the sponge pad.

[0008] In a further improvement, a guide groove is provided at the front end of the fixing seat, and a protective cover is slidably disposed on the guide groove. The protective cover can be fitted over the outside of the infusion needle.

[0009] Compared with the prior art, the present invention has the following beneficial effects: 1. The infusion needle of this utility model is adapted to the curvature of human skin, so that the needle tip fits more closely with the puncture site, reducing the puncture deviation rate. The arc-shaped blunt puncture part transforms the "cutting" puncture into "expansion" separation, reducing the area of ​​blood vessel wall damage, significantly reducing the risk of vasospasm and thrombosis, and reducing the incidence of post-infusion vasculitis. 2. The three-way connector of the infusion tube of this utility model enables closed-loop drug delivery without disconnecting the passage; 3. The sponge pad of this utility model absorbs the seepage and is combined with the air circulation design of the ventilation groove to reduce the infection rate of the puncture point; the transparent protective cover forms a physical barrier to prevent the needle from shifting due to external collisions, while not affecting the observation of the puncture point, thus taking into account both protection and monitoring needs. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model; Figure 2 This is a schematic diagram of the structure of Embodiment 2 of the present invention; Figure 3 This is a schematic diagram of the structure of Embodiment 3 of this utility model; Figure 4 This is a schematic diagram of the structure of Embodiment 4 of this utility model; Figure 5 This is a schematic diagram of the structure of Embodiment 5 of the present invention; Figure 6 This is a schematic diagram of the structure of the infusion needle of this utility model.

[0011] In the diagram, 1. Infusion needle; 11. Curved needle; 12. Horizontal needle; 121. Puncture site; 2. Infusion tubing; 21. Infusion tubing one; 22. Infusion tubing two; 221. Front infusion tubing; 222. T-connector; 2221. Medication inlet; 223. Rear infusion tubing; 3. Connecting connector; 31. Connecting seat; 32. Protective cap; 321. Groove; 4. Fixing mechanism; 41. Fixing seat; 411. Sponge pad; 412. Ventilation groove; 413. Guide groove; 414. Protective cover; 42. Butterfly wing adhesive part; 5. Water-stopping clamp. Detailed Implementation

[0012] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or 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. Therefore, they should not be construed as limitations on this utility model.

[0013] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0014] The following describes the embodiments and appendices. Figures 1-6 The technical solution of this utility model will be further described below.

[0015] Example 1 A curved intravenous infusion needle includes: an infusion needle 1, an infusion tubing 2, and a connecting connector 3 connected in sequence. A fixing mechanism 4 is provided on the side of the infusion tubing 2 near the infusion needle 1, and a water-stopping clip 5 is provided on the side of the infusion tubing 2 near the connecting connector 3. The infusion needle 1 includes a curved needle 11 connected to the infusion tubing 2 and a horizontal needle 12 provided at the end of the curved needle 11. An inclined puncture portion 121 is provided at the end of the horizontal needle 12. The connecting connector 3 includes a connecting seat 31 connected to the infusion tubing 2 and a protective cap 32 provided at the end of the connecting seat 31. The protective cap 32 is provided with grooves. The fixing mechanism 4 includes a fixing seat 41 sleeved on the infusion tubing 2 and butterfly wing adhesive portions 42 provided on both sides of the fixing seat 41.

[0016] like Figure 1 As shown, in actual use, the following steps are taken: First, tear open the sterile packaging, peel off the release paper of the fixing mechanism 4, hold the anti-slip section of the infusion tube 2, unscrew the protective cap 32, and connect and fix the connecting seat 31 to the interface of the infusion bag. Second, open the stop clamp 5 to expel the air from the infusion tube 2. After closing the stop clamp, hold the butterfly-wing-shaped fixing mechanism 4 and align the puncture part 121 of the horizontal needle 12 with the patient's vein. Utilize the angular adaptability of the curved needle 11 to allow the needle tip to naturally conform to the skin and smoothly puncture the blood vessel (confirm successful puncture after blood return). Third, attach the adhesive layer of the fixing mechanism 4 to the patient's skin, open the stop clamp 5, adjust the fluid flow rate, and complete the infusion operation. After the infusion is completed, close the stop clamp, peel off the fixing mechanism, quickly pull out the needle, and apply pressure to stop the bleeding.

[0017] In clinical use, after a successful puncture, medical staff hold the anti-slip textured infusion tubing of the fixation base 41, peel off the release paper of the butterfly wing adhesive part 42, and unfold the two fan-shaped adhesive pieces to the sides and attach them to the skin around the patient's puncture point. Because the fixation base and the infusion tubing are interference fit, the radial rotation and axial movement of the infusion tubing can be effectively restricted. The butterfly wing adhesive part can distribute the adhesive pressure, reduce skin irritation, and the hypoallergenic adhesive formula can reduce the risk of allergies.

[0018] The fan-shaped design of the butterfly wing adhesive part 42 in this embodiment can naturally conform to the curvature of the patient's skin, avoiding the problem of the edge of the traditional rectangular adhesive patch lifting up; the fixing seat 41 can slide along the infusion tube to finely adjust its position, which makes it convenient for medical staff to adjust the adhesive angle according to the puncture point position, solving the problem of the fixed position of the fixing mechanism in embodiment 2 and the easy adhesion failure due to puncture deviation.

[0019] Alternatively, the puncture section 121 of the infusion needle 1 adopts an arc-shaped needle tip design, with its cut surface forming an angle of 11° with the horizontal plane. The needle tip surface undergoes electrochemical passivation treatment, allowing the arc-shaped needle tip to gradually contact the tissue during puncture, transforming the "cutting" puncture of traditional beveled needle tips into an "expanding" separation. This reduces the tissue damage area by more than 40%, especially when puncturing vascular diaphragms or subcutaneous tissue, avoiding excessive scraping of vascular endothelial cells by sharp edges and reducing the risk of vasospasm and thrombosis. Simultaneously, the passivated needle tip surface is smooth and burr-free, avoiding the problem of traditional sharp needle tips easily cutting tissue debris, thus reducing complications such as infusion obstruction (e.g., catheter backflow blockage) and local inflammation caused by tissue debris clogging the catheter or blood vessel.

[0020] Example 2 The difference between Example 2 and Example 1 is that the infusion tube 2 includes an infusion tube 1 21 or an infusion tube 22. The two ends of the infusion tube 1 21 are respectively connected to the infusion needle 1 and the connecting connector 3. The infusion tube 22 includes a front infusion tube 221, a three-way connector 222 and a rear infusion tube 223. Two of the ports of the three-way connector 22 are respectively connected to the front infusion tube 221 and the rear infusion tube 223, and the third port is connected to a drug inlet 2221.

[0021] Specifically, such as Figure 2 As shown, during assembly, the front infusion tube 221 is connected to the infusion needle 1 and the three-way connector 222 in sequence, and the rear infusion tube 223 is connected to the three-way connector 222 and the connecting connector 3 to ensure that each connection part is sealed without leakage. Then, the water-stop clamp 5 is put on the side of the rear infusion tube 223 near the connecting connector 3. In clinical use, the puncture and fixation procedures are the same as in Example 1. If medication needs to be added midway, first close the stopcock 5, remove the protective cap from the medication inlet 2221, puncture the rubber stopper with a syringe, and inject the medication into the three-way connector 222. Then open the stopcock 5, and the medication will enter the patient's body along with the infusion fluid. After medication is added, replace the protective cap to prevent contamination of the medication inlet.

[0022] This invention eliminates the need to disconnect the infusion line during medication administration, reducing the risk of contamination. The rubber stopper can withstand multiple punctures, meeting the needs of multiple medication administrations. Medical staff can flexibly choose the type of infusion tubing according to the patient's treatment plan without replacing the entire infusion needle device, thus reducing medical costs and operational complexity.

[0023] Example 3 The difference between Embodiment 3 and Embodiment 2 is that a sponge pad 411 is provided at the lower end of the fixed base 41, an air exchange groove 412 is provided through the middle of the sponge pad 411, a guide groove 413 is provided at the front end of the fixed base 41, and a protective cover 414 is slidably provided on the guide groove 413. The protective cover 414 can be sleeved on the outside of the infusion needle 1.

[0024] Specifically, such as Figure 3 As shown, in clinical use, before puncture, the protective cover 414 is slid backward to its limit position, exposing the infusion needle 1 for puncture. After successful puncture and securing the butterfly wing adhesive part 42, the sponge pad 411 naturally adheres to the skin near the patient's puncture point, absorbing any possible exudate and acting as a buffer to reduce discomfort caused by friction between the base and the puncture site. The ventilation groove 412 ensures air circulation. When it is necessary to protect the puncture point, the protective cover 414 is slid forward along the guide groove 413, covering the outside of the infusion needle 1 to form a physical barrier, preventing external objects from touching the infusion needle 1 and causing displacement or contamination. During infusion, the puncture point can be observed through the transparent protective cover 414 without moving the cover.

[0025] Example 4 The difference between Example 3 and Example 1 is that a sponge pad 411 is provided at the lower end of the fixed base 41, a ventilation groove 412 is provided through the middle of the sponge pad 411, a guide groove 413 is provided at the front end of the fixed base 41, and a protective cover 414 is slidably provided on the guide groove 413. The protective cover 414 can be sleeved on the outside of the infusion needle 1.

[0026] Specifically, such as Figure 4 As shown, in clinical use, before puncture, the protective cover 414 is slid backward to its limit position, exposing the infusion needle 1 for puncture. After successful puncture and securing the butterfly wing adhesive part 42, the sponge pad 411 naturally adheres to the skin near the patient's puncture point, absorbing any possible exudate and acting as a buffer to reduce discomfort caused by friction between the base and the puncture site. The ventilation groove 412 ensures air circulation. When it is necessary to protect the puncture point, the protective cover 414 is slid forward along the guide groove 413, covering the outside of the infusion needle 1 to form a physical barrier, preventing external objects from touching the infusion needle 1 and causing displacement or contamination. During infusion, the puncture point can be observed through the transparent protective cover 414 without moving the cover.

[0027] The difference between Embodiment 5 and Embodiment 4 is that the end of the connecting seat 31 is provided with a connecting thread.

[0028] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A curved intravenous infusion needle, characterized in that, include: The infusion needle, infusion tubing, and connecting connector are connected in sequence. The infusion tubing has a fixing mechanism on the side near the infusion needle and a water-stopping clamp on the side near the connecting connector. The infusion needle includes a curved needle connected to the infusion tubing and a horizontal needle at the end of the curved needle. The end of the horizontal needle has an inclined puncture portion. The connecting connector includes a connecting seat connected to the infusion tubing and a protective cap at the end of the connecting seat. The protective cap has grooves.

2. The curved intravenous infusion needle according to claim 1, characterized in that, The infusion tubing includes infusion tubing one or infusion tubing two. Infusion tubing one has two ends connected to the infusion needle and the connecting connector, respectively. Infusion tubing two includes a front infusion tubing, a three-way connector and a rear infusion tubing. Two of the three-way connectors are connected to the front infusion tubing and the rear infusion tubing two, respectively, and a drug inlet is connected to the third connector.

3. A curved intravenous infusion needle according to claim 1 or 2, characterized in that, The fixing mechanism includes a fixing seat sleeved on the infusion tube and butterfly wing adhesive parts disposed on both sides of the fixing seat.

4. The curved intravenous infusion needle according to claim 3, characterized in that, A sponge pad is provided at the lower end of the fixed base, and an air exchange groove is provided through the middle of the sponge pad.

5. The curved intravenous infusion needle according to claim 4, characterized in that, The front end of the fixed base is provided with a guide groove, and a protective cover is slidably disposed on the guide groove. The protective cover can be sleeved on the outside of the infusion needle.

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