CN213724145U

CN213724145U - Anti-drop device for syringe needle

Info

Publication number: CN213724145U
Application number: CN202021907089.7U
Authority: CN
Inventors: 曾现伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-03
Filing date: 2020-09-03
Publication date: 2021-07-20
Anticipated expiration: 2030-09-03

Abstract

The utility model discloses a syringe needle dropout prevention means, including syringe needle, needle cover, cylinder: a sealing ring I is arranged on the outer side of the liquid outlet pipe I, a sealing cavity is formed between the sealing ring I and the liquid outlet pipe I, a connecting pipe I is arranged on the outer side of the sealing ring I, and the connecting pipe I is fixedly connected with the needle cylinder; the needle head is fixedly connected with the needle head cover, the middle of the needle head cover is provided with a sealing ring II, the middle of the sealing ring II is hollow to form a liquid outlet pipe II, the outer side of the sealing ring II is provided with a connecting pipe II, the connecting pipe I and the connecting pipe II are threaded, the needle head 1 can be fixed on the needle cylinder through threaded connection, and the needle head cannot fall off under the pressure of solution in the needle cylinder; the sealing ring I wraps the sealing ring II, and the liquid outlet pipe I is clamped by the sealing ring II to prevent liquid medicine in the needle head from spilling to pollute the threaded connection surfaces of the connecting pipe I and the connecting pipe II; the syringe needle cover can separate threaded connecting pipe I, connecting pipe II and the external world, prevents that the air external environment from polluting inner structure.

Description

Anti-drop device for syringe needle

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a syringe needle dropout prevention means.

Background

The syringe is a common medical apparatus in the medical technical field, and a syringe part and a needle part of the syringe are usually separated, so that the needle part is easy to fall off from the front end of the syringe due to the pressure in the syringe, the use of an operator is affected, and in addition, liquid medicine is spilled and leaked, so that waste is caused; the current syringe needle anti-drop syringe, though satisfy and prevent that the syringe needle from droing, but during syringe needle and cylinder separation, remaining liquid medicine can pollute the connection face of syringe needle and cylinder when the syringe needle is pulled out in the syringe needle, influences the installation and the dismantlement of syringe needle, so need a syringe, now prevent droing of syringe needle, the liquid medicine can not contact the connection face of syringe needle and cylinder moreover.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to prior art's not enough, develop a syringe needle dropout prevention means, should prevent droing of syringe needle, can make the liquid medicine contactless syringe needle again and the cylinder be connected the face, make things convenient for the syringe needle of reuse's syringe and the dismantlement of cylinder.

The utility model provides a technical problem's technical scheme does: the embodiment of the utility model provides a syringe needle dropout prevention means, including syringe needle, syringe needle cover, cylinder liquid outlet department sets up drain pipe I, I cylinder fixed connection of drain pipe, characterized by: a sealing ring I is arranged on the outer side of the liquid outlet pipe I, a sealing cavity is formed between the sealing ring I and the liquid outlet pipe I, a connecting pipe I is arranged on the outer side of the sealing ring I, and the connecting pipe I is fixedly connected with the needle cylinder; the needle head is fixedly connected with the needle head cover, a sealing ring II is arranged in the middle of the needle head cover, the middle of the sealing ring II is hollow to form a liquid outlet pipe II, a connecting pipe II is arranged on the outer side of the sealing ring II, an internal thread is arranged on the inner surface of the connecting pipe I, and an external thread corresponding to the internal thread is arranged on the outer surface of the connecting pipe II; the outer side of the connecting pipe II is provided with a needle cover.

As optimization, the liquid outlet pipe I is higher than the sealing ring I, and the liquid outlet pipe I can extend into the liquid outlet pipe II to be connected with the needle head.

And optimally, the size of the sealing ring II corresponds to that of the sealing cavity.

As optimization, the connecting pipe I and the connecting pipe II are arranged together, and the needle head cover, the connecting pipe I, the connecting pipe II, the sealing ring I, the sealing ring II and the liquid outlet pipe I are sequentially arranged from outside to inside.

The effects provided in the contents of the present invention are only the effects of the embodiments, not all the effects of the present invention, and the above technical solution has the following advantages or advantageous effects:

the connecting pipe I and the connecting pipe II are provided with threads, so that the needle head 1 can be fixed on the needle cylinder through threaded connection, and the needle head cannot fall off under the pressure of solution in the needle cylinder; the sealing ring I wraps the sealing ring II, and the liquid outlet pipe I is clamped by the sealing ring II to prevent liquid medicine in the needle head from spilling to pollute the threaded connection surfaces of the connecting pipe I and the connecting pipe II; the syringe needle cover can separate threaded connecting pipe I, connecting pipe II and the external world, prevents that the air external environment from polluting inner structure.

Drawings

Fig. 1 is a sectional view of the connection part of the needle and the cylinder of the present invention.

Fig. 2 is a schematic view of the structure of the needle of the present invention.

Fig. 3 is a schematic view of the structure of the syringe of the present invention.

In the figure, 1, a needle head, 2, a needle head cover, 3, a connecting pipe II, 4, a sealing ring II, 5, a liquid outlet pipe II, 6, a sealing ring I, 7, a connecting pipe I, 8, a liquid outlet pipe I, 9, a sealing cavity and 10 are needle cylinders.

Detailed Description

In order to clearly illustrate the technical features of the present invention, the present invention is explained in detail by the following embodiments in combination with the accompanying drawings. The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. It should be noted that the components illustrated in the figures are not necessarily drawn to scale. Descriptions of well-known components and processing techniques and processes are omitted so as to not unnecessarily limit the invention. The terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Fig. 1 to fig. 3 are an embodiment of the utility model, as shown in the figure, a syringe needle dropout prevention means, including syringe needle 1, needle cover 2,

cylinder

10, 10 liquid outlet department of cylinder sets up drain pipe I8, drain pipe I8 cylinder 10 fixed connection, characterized by: a sealing ring I6 is arranged on the outer side of the liquid outlet pipe I8, a sealing cavity 9 is formed between the sealing ring I6 and the liquid outlet pipe I8, a connecting pipe I7 is arranged on the outer side of the sealing ring I6, and the connecting pipe I7 is fixedly connected with a needle cylinder 10; the needle head 1 is fixedly connected with the needle head cover 2, the middle of the needle head cover 2 is provided with a sealing ring II 4, the middle of the sealing ring II 4 is hollow to form a liquid outlet pipe II 5, the outer side of the sealing ring II 4 is provided with a connecting pipe II 3, the inner surface of the connecting pipe I7 is provided with an internal thread, and the outer surface of the connecting pipe II 3 is provided with an external thread corresponding to the internal thread; the outer side of the connecting pipe II 3 is provided with a needle shield cover 2.

Drain pipe I8 is higher than sealing ring I6, and drain pipe I8 can stretch into drain pipe II 5 and be connected with syringe needle 1.

The size of the sealing ring II 4 corresponds to that of the sealing cavity 9.

Connecting pipe I7 and connecting pipe II 3 are installed together, and from outer to interior syringe needle cover 2, connecting pipe I7, connecting pipe II 3, sealing ring I6, sealing ring II 4, drain pipe I8 are in proper order.

When the syringe is used, the liquid outlet pipe II 5 is aligned to the liquid outlet pipe I8, the liquid outlet pipe I8 is placed into the liquid outlet pipe II 5, the structure of the needle head 1 is rotated, the connecting pipe II 3 is screwed into a cavity of the connecting pipe I7 and the sealing ring I6, the connecting pipe II 3 is connected with the connecting pipe I7 through threads, the needle head 1 is fixed, and the needle head 1 is prevented from falling off; meanwhile, the needle cover 2 ensures that the outside cannot pollute the needle head 1 and the inside of the needle cylinder 10; when the needle head 1 is disassembled, the needle head 1 part can be separated from the needle cylinder 10 only by rotating the needle head cover 2.

Although the above description has been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and on the basis of the technical solution of the present invention, various modifications or variations that can be made by those skilled in the art without creative efforts are still within the scope of the present invention.

Claims

1. The utility model provides a syringe needle dropout prevention means, includes syringe needle (1), syringe needle cover (2), cylinder (10) liquid outlet department sets up drain pipe I (8), drain pipe I (8) cylinder (10) fixed connection, characterized by: a sealing ring I (6) is arranged on the outer side of the liquid outlet pipe I (8), a sealing cavity (9) is formed between the sealing ring I (6) and the liquid outlet pipe I (8), a connecting pipe I (7) is arranged on the outer side of the sealing ring I (6), and the connecting pipe I (7) is fixedly connected with the needle cylinder (10); the needle head (1) is fixedly connected with the needle head cover (2), a sealing ring II (4) is arranged in the middle of the needle head cover (2), the middle of the sealing ring II (4) is hollow to form a liquid outlet pipe II (5), and a connecting pipe II (3) is arranged on the outer side of the sealing ring II (4); the inner surface of the connecting pipe I (7) is provided with an internal thread, and the outer surface of the connecting pipe II (3) is provided with an external thread corresponding to the internal thread; the outer side of the connecting pipe II (3) is provided with a needle head cover (2).

2. The drop preventing device for the needle of the syringe as claimed in claim 1, wherein: drain pipe I (8) are higher than sealing ring I (6), and drain pipe I (8) can stretch into drain pipe II (5) and be connected with syringe needle (1).

3. The drop preventing device for the needle of the syringe as claimed in claim 1, wherein: the size of the sealing ring II (4) corresponds to that of the sealing cavity (9).

4. The drop preventing device for the needle of the syringe as claimed in claim 1, wherein: connecting pipe I (7) and connecting pipe II (3) are installed together, and from outer to interior syringe needle cover (2), connecting pipe I (7), connecting pipe II (3), sealing ring I (6), sealing ring II (4), drain pipe I (8) are in proper order.