Disposable blue empty needle

Abstract

The utility model discloses a disposable blue empty needle, which relates to the technical field of blue empty needles and comprises a needle cylinder, a needle cylinder nipple is arranged at the bottom of the needle cylinder, a threaded Luer interface is added on the surface of the needle cylinder nipple, a needle tube jacket is adhered to the inside of the needle cylinder, a push rod is arranged inside the needle cylinder, and the push rod is connected with the needle cylinder nipple. The push rod slides in the needle cylinder in the axial direction of the needle cylinder in a reciprocating mode, and the needle tube is sleeved with the needle cylinder and located in the push rod. The novel blue empty needle is designed to better overcome the defect that an existing straight blue empty needle is disengaged from a puncture needle clinically due to the fact that the existing straight blue empty needle is not provided with an anti-falling design. Therefore, the threaded Luer interface is additionally arranged on the needle cylinder nipple and is connected with the puncture needle, and the disengagement condition cannot be caused. The two-way hemostasis valve is arranged, so that the situations of aeroembolism and bleeding are better avoided, and low-blood-volume patients or children are better facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of blue empty needles, in particular to a disposable blue empty needle. Background Art

[0002] The blue empty needle is a commonly used medical consumable used to inject drugs or extract body fluids. Its composition structure usually includes the following parts: 1. Needle: The needle is the most critical part of the blue empty needle. It is generally made of stainless steel and has a sharp tip that can puncture the skin and blood vessels. The size and length of the needle will vary according to the use requirements. 2. Needle body: The needle body is the part that connects the needle and the syringe or blood collection tube, usually a hollow metal pipe. Its diameter and length will also vary depending on the use requirements. 3. Protective cap: The protective cap is the part used to cover the needle, which can protect the cleanliness and safety of the needle before use and prevent damage or contamination of the needle. 4. Syringe connection port: There is usually a connection port at one end of the blue empty needle for connecting a syringe or blood collection device. The design of this connection port can ensure close fit with other medical equipment to achieve effective injection or blood collection operations.

[0003] The existing straight blue-empty needle has no anti-falling design, which has the disadvantage of the blue-empty needle being separated from the puncture needle in clinical practice. Specifically, before improvement, the front end nipple of the syringe and the connection between the puncture needle are very easy to fall off when the doctor is clinically operating the blue-empty needle to introduce the guide wire or recover blood, which is not conducive to the puncture operation and easily causes the puncture needle to shake and cause the guide wire to fail to be inserted, especially for patients with low blood volume or children. In order to better improve the occurrence of such situations, this design makes improvements to optimize this situation. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide a disposable blue empty needle to solve the disadvantage of the existing straight blue empty needle, which has the potential to be detached from the puncture needle in clinical practice due to the lack of an anti-falling design. Specifically, before improvement, the connection between the nipple at the front end of the syringe and the puncture needle is very easy to fall off when the doctor introduces the guide wire or recovers blood with the blue empty needle in clinical practice, which is not conducive to the puncture operation and easily causes the puncture needle to shake and cause the guide wire insertion to fail, especially a technical problem for patients with hypovolemia or children.

[0005] To achieve the above-mentioned purpose, the utility model is implemented through the following technical scheme: a disposable blue empty needle, including a syringe, a syringe nipple is arranged at the bottom of the syringe, a threaded Luer interface is added to the surface of the syringe nipple, a needle tube jacket is bonded to the inside of the syringe, a push rod is arranged inside the syringe, the push rod slides back and forth along the axial direction of the syringe inside the syringe, and the needle tube jacket is located inside the push rod inside the syringe.

[0006] As a preferred technical solution of the utility model, a needle tube inner core is arranged inside the needle tube outer sleeve.

[0007] As a preferred technical solution of the utility model, the interior of the push rod is provided with a large frame, a hemostatic valve 1, a small frame, and a hemostatic valve 2. The large frame is arranged at the top of the inner core of the needle tube, the top of the large frame is provided with a hemostatic valve 1, the top of the hemostatic valve 1 is provided with a small frame, and the top of the small frame is provided with a hemostatic valve 2.

[0008] As a preferred technical solution of the utility model, the top end of the inner core of the needle tube is bonded to the bottom end of the large frame.

[0009] As a preferred technical solution of the utility model, a piston is arranged at the bottom end of the push rod.

[0010] As a preferred technical solution of the utility model, a button is provided on the top of the push rod.

[0011] As a preferred technical solution of the utility model, the push rod, the handle, the hemostatic valve 1, the large frame, the hemostatic valve 2 and the small frame are respectively welded by ultrasonic welding.

[0012] The beneficial effects of the utility model are:

[0013] The new blue-empty needle is designed to better solve the problem of the existing straight blue-empty needle, which has the potential to be separated from the puncture needle in clinical practice because it has no anti-falling design. Therefore, a threaded Luer interface is added to the syringe nipple to connect with the puncture needle without causing separation. It also has a two-way hemostatic valve to better avoid gas embolism and bleeding, which is more beneficial for patients with low blood volume or children.

[0014] The design of this blue empty needle is to solve the problem of the syringe and the puncture needle being separated during clinical use. This design adds a threaded Luer interface at the nipple of the blue empty needle syringe, which can be directly locked with the puncture needle. Therefore, it is difficult to cause the syringe to be separated during use in clinical practice. This design also has a two-way hemostatic valve to better avoid gas embolism and bleeding, which is more beneficial for patients or children with low blood volume.

[0015] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and will be apparent to those skilled in the art based on the following examination and research, or can be taught from the practice of the present invention to some extent. The objectives and other advantages of the present invention can be achieved and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1This is a front cross-sectional structural diagram of a disposable blue empty needle of the utility model;

[0017] Figure 2 It is a schematic diagram of the cross-sectional structure of the syringe of the utility model;

[0018] Figure 3 It is a structural schematic diagram of the push rod of the utility model;

[0019] Figure 4 It is a schematic diagram of the cross-sectional structure of the small frame of the utility model;

[0020] Figure 5 It is a schematic diagram of the cross-sectional structure of the large frame of the utility model;

[0021] In the figure: syringe 1, piston 2, push rod 3, needle tube outer sleeve 4, needle tube inner core 5, large frame 6, hemostatic valve 1 7, small frame 8, hemostatic valve 2 9, and hand button 10. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0025] In the above description of the utility model, it should be noted that the terms "one side", "the other side", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0026] In addition, the term "same" does not mean that the parts must be absolutely the same, but slight differences are allowed. The term "vertical" only means that the positional relationship between the parts is more vertical than "parallel", and does not mean that the structure must be completely vertical, but can be slightly tilted.

[0027] Embodiment 1

[0028] See also Figure 1-5 , which is a technical solution provided by the utility model: a disposable blue empty needle, comprising a syringe 1, a syringe nipple 1 is arranged at the bottom of the syringe 1, a threaded Luer interface is added to the surface of the syringe nipple 1, a needle tube jacket 4 is bonded to the inside of the syringe 1, a push rod 3 is arranged inside the syringe 1, the push rod 3 reciprocates along the axial direction of the syringe 1 inside the syringe 1, the needle tube jacket 4 is located inside the push rod 3 inside the syringe 1, a needle tube inner core 5 is arranged inside the needle tube jacket 4, a large skeleton 6 and a hemostatic valve are arranged inside the push rod 3. 7, a small frame 8, and a hemostatic valve 9. The large frame 6 is arranged at the top of the needle tube inner core 5. A hemostatic valve 7 is arranged at the top of the large frame 6. A small frame 8 is arranged at the top of the hemostatic valve 7. A hemostatic valve 9 is arranged at the top of the small frame 8. The top of the needle tube inner core 5 is bonded to the bottom of the large frame 6. A piston 2 is arranged at the bottom of the push rod 3. A button 10 is arranged at the top of the push rod 3. Ultrasonic welding is adopted between the push rod 3, the button 10, the hemostatic valve 7, the large frame 6, the hemostatic valve 9 and the small frame 8.

[0029] Specifically, the design of the new blue-empty needle is to better solve the disadvantage of the existing straight blue-empty needle, which has the potential to be separated from the puncture needle in clinical practice because it has no anti-falling design. Therefore, a threaded Luer interface is added to the nipple of the syringe 1 to connect with the puncture needle without causing separation. It also has a two-way hemostatic valve to better avoid gas embolism and bleeding, which is more beneficial for patients with low blood volume or children.

[0030] The design of this blue empty needle is to solve the problem of the syringe 1 being separated from the puncture needle during clinical use. This design adds a threaded Luer interface at the nipple of the blue empty needle syringe 1, which can be directly locked with the puncture needle. Therefore, it is difficult to cause the situation of separation during use in clinical practice. This design also has a two-way hemostatic valve to better avoid the occurrence of gas embolism and bleeding, which is more beneficial for patients or children with low blood volume.

[0031] The new blue-empty needle is designed to better solve the disadvantage of the existing straight blue-empty needle, which has no anti-drop design and may be separated from the puncture needle in clinical practice. Therefore, a threaded Luer interface is added to the nipple of the syringe 1 to connect with the puncture needle without causing separation. It also has a two-way hemostatic valve to better avoid gas embolism and bleeding, which is more beneficial for patients with low blood volume or children.

[0032] The process flow of this utility model:

[0033] 1. Workpiece preparation:

[0034] 1.1. Purchase piston 2, hemostatic valve,

[0035] 1.2. Purchase needle tube outer sleeve 4, needle tube inner core 5,

[0036] 1.3. Injection molding parts (syringe 1, push rod 3, large frame 6, small frame 8,

[0037] Press hands 10).

[0038] 2. Assemble the components:

[0039] ① Collect the materials for each component, ② Clean each injection molded component,

[0040] ③ The syringe 1 is bonded to the needle tube jacket 4,

[0041] ④ The inner core is bonded to the large frame 6,

[0042] ⑤ Assemble the push rod 3, the hand 10, the hemostatic valve and the small frame 8 by ultrasonic welding.

[0043] ⑥ Push rod 3 assembles piston 2,

[0044] ⑦Assemble syringe 1 and push rod 3

[0045] Action description of this utility model:

[0046] 1. Syringe 1: The nipple of syringe 1 can lock the puncture needle and has the function of being difficult to fall off.

[0047] 2. Syringe 1 and piston 2: The inner wall of the needle tube and the piston 2 are tightly connected and sealed. The needle tube jacket 4 of the syringe 1 and the center hole of the piston 2 are in the same line and can pass smoothly without jamming.

[0048] 3. Push rod 3, syringe 1 and outer sleeve: The interior of push rod 3 is designed to be hollow, and has the same center line as the needle tube outer sleeve 4, and the needle tube inner core 5 can pass smoothly through the inner hole of the needle tube outer sleeve 4.

[0049] 4. Hemostatic valve: The hemostatic valve is designed with a central hole. It is aligned with the syringe 1, the needle tube jacket 4, and the needle tube inner core 5 as the same center line. The guide wire can pass smoothly without getting stuck, and it has the functions of hemostasis, avoiding gas embolism and preventing overflow.

[0050] 5. Pressing handle 10: The interior of the pressing handle 10 is hollow. It is also designed with a central hole. It is colinear with the center lines of the syringe 1, the outer sleeve of the syringe 1, the piston 2, the inner core of the push rod 3, the hemostatic valve, etc. It allows the guide wire to pass smoothly without jamming, and has the functions of hemostasis, avoiding gas embolism and preventing backflow.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the 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 disposable blue empty needle, including a syringe, characterized in that: A syringe nipple is provided at the bottom of the syringe, a threaded Luer interface is added to the surface of the syringe nipple, a needle tube jacket is bonded to the inside of the syringe, a push rod is provided inside the syringe, the push rod slides back and forth along the axial direction of the syringe inside the syringe, and the needle tube jacket is located inside the push rod inside the syringe.

2. A disposable blue empty needle according to claim 1, characterized in that: A needle tube inner core is arranged inside the needle tube outer sleeve.

3. A disposable blue empty needle according to claim 2, characterized in that: The interior of the push rod is provided with a large frame, a hemostatic valve 1, a small frame, and a hemostatic valve 2. The large frame is arranged at the top end of the inner core of the needle tube, the top end of the large frame is provided with a hemostatic valve 1, the top end of the hemostatic valve 1 is provided with a small frame, and the top end of the small frame is provided with a hemostatic valve 2.

4. A disposable blue empty needle according to claim 3, characterized in that: The top end of the inner core of the needle tube is bonded to the bottom end of the large frame.

5. The disposable blue empty needle according to claim 4, characterized in that: The bottom end of the push rod is provided with a piston.

6. A disposable blue empty needle according to claim 5, characterized in that: The top end of the push rod is provided with a push handle.

7. The disposable blue empty needle according to claim 6, characterized in that: The push rod, the handle, the first hemostatic valve, the large frame, the second hemostatic valve and the small frame are respectively welded by ultrasonic welding.

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