Non-adhesive light-proof remaining needle

Abstract

The utility model discloses an adhesive-free light-proof remaining needle, relates to the technical field of remaining needles, and solves the problems that in the prior art, an adhesive can seep and remain in a hose at a hose connector, so that the safety risk of machinery is caused, and the adhesive is inconvenient to recycle. Comprising an indwelling needle, the outer side wall of the indwelling needle is connected with a light shielding cover, the indwelling needle comprises a hose, one end of the hose is concentrically inserted into a first connector of a three-way catheter seat, the outer side of the end of the first connector is concentrically connected with a first round sleeve, and the first round sleeve is fixedly connected with the hose through hot melting; the other end of the hose is concentrically inserted into a second connecting port of the three-way connecting seat, the outer side of the end part of the second connecting port is concentrically connected with a second round sleeve, and the second round sleeve is fixedly connected with the hose through hot melting. The drug delivery device has the beneficial effects that the risk of adhesive chemical substance residue can be avoided, and the light shielding cover can provide a good light shielding environment for drugs.

Description

Technical Field

[0001] This utility model relates to the field of indwelling needle technology, specifically to a light-proof indwelling needle without adhesive. Background Technology

[0002] Light-protected indwelling needles are a special type of intravenous indwelling needle. They are made with light-protecting materials that effectively block light of specific wavelengths, preventing certain drugs from changing their properties under the influence of light.

[0003] Current light-shielding indwelling needle structures are generally similar to those described in a novel light-shielding indwelling needle disclosed in patent application number "CN201620934523.8". They include a cannula seat, a needle seat, a connecting tube, and a connecting tube connector. The connecting tube connects the cannula seat and the connecting tube connector. The needle seat is connected to the cannula seat. The outer surface of the cannula seat is covered with a light-shielding layer. The connecting tube includes an inner tube and an outer tube, which are co-extruded. The outer tube is injection molded from a light-shielding material.

[0004] In existing light-shielding indwelling needle products, the flexible tube of the light-shielding indwelling needle is generally made of a flexible tube with a certain elasticity that meets medical device standards. It is used as a connecting tube to connect with other injection-molded parts. The connection between the flexible tube and the injection-molded part requires an outwardly protruding connection port on the injection-molded part. The flexible tube is inserted into the connection port. In the above method, UV glue or other chemical substances are used to bond and fix the connection between the flexible tube and the injection-molded part to prevent loosening, leakage and other problems from occurring.

[0005] When adhesives are used for bonding, during the curing process or use, factors such as pressure, temperature changes, and prolonged contact with liquids can cause UV adhesive or other chemicals to seep out and remain in the gap between the hose and the injection-molded part, leading to reduced product performance and potential safety risks. Furthermore, due to the presence of chemical adhesives, waste recycling requires separating the portions containing and not containing chemical adhesives for separate recycling.

[0006] Therefore, this invention proposes a light-proof indwelling needle without adhesive to solve the above-mentioned problems. Utility Model Content

[0007] The purpose of this invention is to provide a light-proof indwelling needle without adhesive, which solves the problem in the prior art where adhesive seeps out and remains in the hose at the gap of the hose connector, causing a safety risk to the device and making it inconvenient to recycle.

[0008] The technical solution adopted by this utility model to solve its technical problem is:

[0009] An adhesive-free, light-shielding indwelling needle includes an indwelling needle with a light-shielding cover detachably connected to its outer side wall. The indwelling needle includes a flexible tube, one end of which is concentrically inserted into a first connection port of a three-way catheter hub. A first circular sleeve is concentrically connected to the outer side of the first connection port, and the first circular sleeve is concentrically connected to the outer side of the flexible tube. The first circular sleeve and the flexible tube are fixedly connected by heat fusion. A catheter assembly and a needle assembly are also connected to the three-way catheter hub. The catheter assembly includes an isolation plug and a funnel assembly. The needle assembly includes a slotted needle seat and a needle tube. The isolation plug is concentrically connected to… Inside the three-way catheter seat, the funnel assembly is concentrically connected to one end of the three-way catheter seat, the slotted needle seat is concentrically connected to the other end of the three-way catheter, and the needle tube is concentrically connected inside the funnel assembly. A protective sleeve is connected to the three-way catheter seat corresponding to the needle tube. The other end of the tubing is concentrically inserted into the second connection port of the three-way connector. A second circular sleeve is concentrically connected to the outer side of the end of the second connection port. The second circular sleeve is concentrically connected to the outer side of the tubing. The second circular sleeve and the tubing are fixedly connected by heat fusion. The three-way connector includes an infusion connector and an end cap.

[0010] Furthermore, a sliding clamping plate is connected to the hose, and the hose passes through a slot in the sliding clamping plate.

[0011] Furthermore, the outer wall of the end cap is provided with anti-slip texture.

[0012] Furthermore, the light shield is concentrically arranged on the outside of the flexible tube, and magnetic sheets are connected to the openings at both ends of the light shield. The light shield passes through the opening along the axial direction, and the two ends of the opening are overlapped.

[0013] Furthermore, each end of the light shield is provided with a rubber ring, which is located inside the light shield.

[0014] Furthermore, the light shield has an observation window, and a light shielding cloth is rotatably connected to one side of the observation window. The light shielding cloth is magnetically connected to the light shield.

[0015] Furthermore, the light shield includes a buffer layer, a light shielding layer, and a wear-resistant layer, which are arranged sequentially from the inside to the outside along the axial direction.

[0016] In summary, compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. The first and second round sleeves of this utility model are fixedly connected to the tubing by heat fusion, which is more secure and stable than traditional adhesive connections. It also avoids the problem of chemical residues that may be caused by adhesives, eliminates potential medical risks such as allergic reactions and thrombosis caused by adhesive residues, and improves the safety of indwelling needles. It is especially suitable for patients who are sensitive to chemicals. At the same time, heat fusion fixation can withstand a certain amount of tension and pressure, ensuring that the tubing will not easily detach from the sleeve during use, thus ensuring the continuity and stability of infusion.

[0018] 2. The light shield of this utility model is provided with a buffer layer, a light shielding layer and a wear-resistant layer arranged sequentially from the inside to the outside. It ensures the light shielding effect from multiple aspects, prevents light from having an adverse effect on the drug, ensures the stability and efficacy of the drug, reduces medical costs, and can be disassembled according to the drug. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the indwelling needle of this utility model;

[0020] Figure 2 for Figure 1 A magnified view of part A;

[0021] Figure 3 for Figure 1 A magnified view of part B;

[0022] Figure 4 This is a schematic diagram of the needle assembly of this utility model;

[0023] Figure 5 This is a schematic diagram of the catheter assembly of this utility model;

[0024] Figure 6 This is a schematic diagram of the light shield of this utility model;

[0025] In the diagram: 1. Tube; 2. Three-way catheter holder; 3. First round sleeve; 4. Isolation plug; 5. Funnel assembly; 6. Groove needle holder; 7. Needle tube; 8. Protective sleeve; 9. Three-way connector; 11. Second round sleeve; 12. Infusion connector; 13. End cap; 14. Anti-slip texture; 15. Sliding clamping plate; 16. Light shield; 17. Magnetic sheet; 18. Rubber ring; 19. Observation window; 20. Light shielding cloth. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] In this application, the terms "upper," "inner," "outer," "middle," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0028] like Figure 1-6 As shown, a light-shielding indwelling needle without adhesive includes an indwelling needle. A light-shielding cover 16 is detachably connected to the outer wall of the indwelling needle. The light-shielding cover 16 is concentrically arranged on the outside of the tubing 1. Magnetic plates 17 are connected to the openings at both ends of the light-shielding cover 16. The light-shielding cover 16 extends through the openings axially, with the two ends overlapping. Rubber rings 18 are provided at each end of the light-shielding cover 16 and are located inside the light-shielding cover 16. An observation window 19 is provided on the light-shielding cover 16. A light-shielding cloth 20 is rotatably connected to one side of the observation window 19 and is magnetically connected to the light-shielding cover 16. Thus, during infusion, medical personnel can observe the flow of liquid in the tubing 1 at any time through the observation window 19. The light-shielding cover 16 includes a buffer layer, a light-shielding layer, and a wear-resistant layer, which are arranged sequentially from the inside to the outside along the axial direction. After the indwelling needle is inserted and secured, medical staff place the light shield 16 over the outside of the tubing 1. The magnetic pieces 17 attract each other, tightly securing the light shield 16 to the outside of the tubing 1, creating a light-proof environment that effectively protects photosensitive medications. The rubber ring 18 at the end of the light shield 16 further enhances the seal between the light shield 16 and the tubing 1, preventing external light from entering from the end and also providing a buffering effect to avoid damage to the tubing 1 during installation and use. The indwelling needle includes the tubing 1, which is connected to a sliding clamping plate 15. The tubing 1 passes through the slot in the sliding clamping plate 15, facilitating the movement of the tubing 1 and preventing twisting or bending, thus ensuring smooth infusion.

[0029] One end of the flexible tube 1 is concentrically inserted into the first connection port of the three-way conduit seat 2. A first round sleeve 3 is concentrically connected to the outer side of the end of the first connection port. The first round sleeve 3 is concentrically connected to the outer side of the flexible tube 1. The first round sleeve 3 and the flexible tube 1 are fixedly connected by heat fusion. The three-way conduit seat 2 is also connected to a conduit assembly and a needle assembly. The conduit assembly includes an isolation plug 4 and a funnel assembly 5. The needle assembly includes a grooved needle seat 6 and a needle tube 7. The isolation plug 4 is concentrically connected inside the three-way conduit seat 2. The funnel assembly 5 is concentrically connected to one end of the three-way conduit seat 2. The grooved needle seat 6 is concentrically connected to the other end of the three-way conduit. The needle tube 7 is concentrically connected inside the funnel assembly 5. A protective sleeve 8 is connected to the three-way conduit seat 2 at the location corresponding to the needle tube 7.

[0030] The other end of the tubing 1 is concentrically inserted into the second connection port of the three-way connector 9. A second round sleeve 11 is concentrically connected to the outer side of the end of the second connection port. The second round sleeve 11 is concentrically connected to the outer side of the tubing 1, and the second round sleeve 11 and the tubing 1 are fixedly connected by heat fusion. The three-way connector 9 includes an infusion connector 12 and an end cap 13. The infusion device is connected to the infusion connector 12 of the indwelling needle, ensuring a tight and leak-free connection. Then, the medical staff holds the indwelling needle and performs the puncture operation through the needle tube 7. After successful puncture, the needle tube 7 is connected to the external infusion line through the funnel assembly 5. The liquid can smoothly enter the tubing 1 through the needle tube 7 and the funnel assembly 5, and finally be delivered to the patient's body. The first round sleeve 3 and the second round sleeve 11 are firmly connected to the tubing 1 by heat fusion, providing stable support and fixation for the tubing 1, preventing displacement or twisting of the tubing 1 during use, and ensuring smooth infusion. The outer wall of the end cap 13 is provided with anti-slip texture 14. Furthermore, the anti-slip texture 14 on the outer wall of the end cap 13 allows for a stable grip on the end cap 13, ensuring a tight connection to the tee connector 9 and preventing external contaminants from entering.

[0031] The working process of this utility model is as follows:

[0032] First, connect the infusion device to the infusion connector 12 of the indwelling needle, ensuring a tight and leak-free connection. Then, the medical staff holds the indwelling needle and performs the puncture operation through the needle tube 7. After successful puncture, the needle tube 7 is connected to the external infusion line through the funnel assembly 5. The liquid can smoothly pass through the needle tube 7 and the funnel assembly 5 into the tubing 1 and finally be delivered to the patient's body. The first round sleeve 3 and the second round sleeve 11 are firmly connected to the tubing 1 by heat fusion, providing stable support and fixation for the tubing 1, preventing displacement or twisting of the tubing 1 during use, and ensuring smooth infusion.

[0033] After the indwelling needle is inserted and secured, the medical staff will put the light shield 16 on the outside of the tubing 1. The magnetic pieces 17 attract each other, so that the light shield 16 is tightly fixed to the outside of the tubing 1, forming a light-proof environment, which effectively protects the light-sensitive drug. The rubber ring 18 at the end of the light shield 16 further enhances the seal between the light shield 16 and the tubing 1, preventing external light from entering from the end, and also plays a certain buffering role to avoid damage to the tubing 1 during installation and use.

[0034] During the infusion process, medical staff can observe the flow of liquid in the tubing 1 at any time through the observation window 19. When the infusion is finished, the medical staff first pulls the infusion device out of the infusion connector 12. At this time, the self-sealing structure of the infusion connector 12 will automatically close to prevent blood backflow and external contaminants from entering, and then wait for the next infusion.

Claims

1. A light-proof indwelling needle without adhesive, comprising an indwelling needle, characterized in that, The outer side wall of the indwelling needle is detachably connected to a light shield (16). The indwelling needle includes a flexible tube (1). One end of the flexible tube (1) is concentrically inserted into the first connection port of the three-way conduit seat (2). The outer side of the end of the first connection port is concentrically connected to a first round sleeve (3). The first round sleeve (3) is concentrically connected to the outer side of the flexible tube (1). The first round sleeve (3) and the flexible tube (1) are fixedly connected by heat fusion. The three-way catheter seat (2) is also connected to a catheter assembly and a needle assembly. The catheter assembly includes an isolation plug (4) and a funnel assembly (5). The needle assembly includes a slotted needle seat (6) and a needle tube (7). The isolation plug (4) is concentrically connected inside the three-way catheter seat (2). The funnel assembly (5) is concentrically connected to one end of the three-way catheter seat (2). The slotted needle seat (6) is concentrically connected to the other end of the three-way catheter. The needle tube (7) is concentrically connected inside the funnel assembly (5). A protective sleeve (8) is connected to the three-way catheter seat (2) corresponding to the needle tube (7). The other end of the hose (1) is concentrically inserted into the second connection port of the three-way connector (9). A second round sleeve (11) is concentrically connected to the outer side of the end of the second connection port. The second round sleeve (11) is concentrically connected to the outer side of the hose (1). The second round sleeve (11) and the hose (1) are fixedly connected by heat fusion. The three-way connector (9) includes an infusion connector (12) and an end cap (13).

2. The adhesive-free, light-proof indwelling needle according to claim 1, characterized in that, A sliding clamping plate (15) is connected to the hose (1), and the hose (1) passes through the slot of the sliding clamping plate (15).

3. The adhesive-free, light-proof indwelling needle according to claim 1, characterized in that, The outer side wall of the end cap (13) is provided with anti-slip texture (14).

4. The adhesive-free, light-proof indwelling needle according to claim 1, characterized in that, The light shield (16) is concentrically arranged on the outside of the hose (1). Magnetic sheets (17) are connected to the openings at both ends of the light shield (16). The light shield (16) passes through the opening along the axial direction, and the two ends of the opening are overlapped.

5. The adhesive-free, light-proof indwelling needle according to claim 4, characterized in that, Each end of the light shield (16) is provided with a rubber ring (18), and the rubber ring (18) is located inside the light shield (16).

6. The adhesive-free, light-proof indwelling needle according to claim 5, characterized in that, The light shield (16) has an observation window (19), and a light shield cloth (20) is rotatably connected to one side of the observation window (19). The light shield cloth (20) is magnetically connected to the light shield (16).

7. The adhesive-free, light-proof indwelling needle according to claim 6, characterized in that, The light shield (16) includes a buffer layer, a light shielding layer and a wear-resistant layer, which are arranged sequentially from the inside to the outside along the axial direction.

Images