CN213158517U

CN213158517U - Needle cylinder capable of keeping injection needle sticking verticality

Info

Publication number: CN213158517U
Application number: CN202021566152.5U
Authority: CN
Inventors: 王明甫; 朱文力; 高新发; 朱经平; 张思思
Original assignee: Hubei Huaqiang Pharmaceutical Cap Co ltd
Current assignee: Hubei Huaqiang Pharmaceutical Cap Co ltd
Priority date: 2020-07-31
Filing date: 2020-07-31
Publication date: 2021-05-11
Anticipated expiration: 2030-07-31

Abstract

A needle cylinder capable of keeping the verticality of an injection needle stick comprises a cylinder body, wherein the front end of the cylinder body is provided with a needle hole, and the injection needle stick is fixed in the needle hole; the needle hole comprises a round hole part, a first groove is arranged at the upper end of the round hole part, a second groove is arranged at the lower end of the round hole part, a waistcoat is arranged at the lower end of the second groove, a liquid inlet hole and a glue injection hole are arranged at the lower end of the waistcoat, the liquid inlet hole is communicated with the injection needle, and the glue injection hole is communicated with the second groove; the viscose is injected into the first groove and the second groove to fix the injection viscose needle. The utility model provides a pair of can keep injecting and glue perpendicular straightness's cylinder of needle can improve the qualification rate of product.

Description

Needle cylinder capable of keeping injection needle sticking verticality

Technical Field

The utility model relates to a medicament tube barrel, in particular to a needle cylinder capable of keeping the verticality of an injection needle.

Background

The medicament tube is used for storing liquid medicament. The perpendicularity of the injection needle and the barrel needs to be guaranteed when the medicament barrel is produced. As shown in fig. 6, the diameter of the injection needle of the existing medicament cartridge is 0.8mm, and the needle hole of the medicament cartridge is generally 1mm for easy installation, i.e. there is a gap of 0.2mm between the injection needle and the needle hole of the medicament cartridge. The head and the tail of the upper outlet part of the cylinder body are provided with arc grooves, and the two grooves are convenient for accommodating the adhesive and fixing the injection adhesive needle. Because the injection needle and the needle hole of the medicament tube have a gap and are all in an open structure from head to tail, the verticality of the injection needle and the medicament tube after some glue is not in line with the production requirement, and the qualification rate of the existing product is only about 88%.

In addition, the medicament tube needs to store the liquid medicine for more than one or two years, and the sealed storage is guaranteed and the medicament tube can be directly used when needed.

Disclosure of Invention

The utility model aims to solve the technical problem that a can keep injecting and glue needle straightness's cylinder that hangs down is provided, guarantees that the straightness that hangs down that barrel and injection were glued the needle and satisfies the demands, makes the qualification rate of product reach more than 99%.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:

a needle cylinder capable of keeping the verticality of an injection needle stick comprises a cylinder body, wherein the front end of the cylinder body is provided with a needle hole, and the injection needle stick is fixed in the needle hole; the needle hole comprises a round hole part, a first groove is arranged at the upper end of the round hole part, a second groove is arranged at the lower end of the round hole part, a waistcoat is arranged at the lower end of the second groove, a liquid inlet hole and a glue injection hole are arranged at the lower end of the waistcoat, the liquid inlet hole is communicated with the injection needle, and the glue injection hole is communicated with the second groove; the viscose is injected into the first groove and the second groove to fix the injection viscose needle.

The liquid inlet end of the cylinder body is plugged by a sealing plug, and the liquid outlet end of the cylinder body is plugged by a sealing sleeve.

The sealing plug and the sealing sleeve are both made of silica gel.

And a T-shaped hole for inserting the piston rod is formed in the outer end of the sealing plug.

And a positioning groove is arranged at the top end in the sealing sleeve.

The utility model relates to a can keep injecting needle cylinder of gluing straightness that hangs down has following technological effect:

1) through setting up first recess, second recess, sleeveless jacket and injecting glue hole, can realize like this that the straightness relation of hanging down of injecting glue needle and barrel satisfies the production requirement under the fixed prerequisite of injecting glue about guaranteeing, improves the product percent of pass, reduce cost.

2) The injection needle is completely sealed by adopting the flexible sealing sleeve to be sleeved on the injection needle, and the end head of the injection needle is inserted into the solid part of the sealing sleeve, so that the injection needle is not completely sealed, no gap exists between the sealing sleeve and the end head of the needle head, and air cannot be introduced due to collision or other reasons during transportation; through setting up the sealing plug, can seal the tube section of thick bamboo like this, and the sealing plug can insert the driving piece, makes things convenient for the later stage injection.

Drawings

The invention will be further explained with reference to the following figures and examples:

fig. 1 is a main sectional view of the present invention.

Fig. 2 is a partially enlarged schematic view of a portion a in fig. 1.

Fig. 3 is a schematic view showing a partial enlargement of the pinhole in the present invention.

Fig. 4 is a main sectional view of the sealing plug of the present invention.

Fig. 5 is a main sectional view of the middle sealing sleeve of the present invention.

Fig. 6 is a schematic view of the present pinhole according to the present invention.

In the figure: the injection needle comprises a barrel body 1, a needle hole 2, an injection needle 3, a round hole part 4, a first groove 5, a second groove 6, a waistcoat 7, a liquid inlet hole 8, a glue injection hole 9, a glue 10, a sealing plug 11, a sealing sleeve 12, a T-shaped hole 13 and a positioning groove 14.

Detailed Description

As shown in figures 1-5, a needle cylinder capable of keeping the verticality of an injection needle stick comprises a cylinder body 1, wherein the front end of the cylinder body 1 is provided with a needle hole 2, and an injection needle stick 3 is fixed in the needle hole 2. In order to ensure that the verticality meets the requirement, the pinhole 2 comprises a circular hole part 4, and the circular hole part 4 is a circular hole with the diameter of 1 mm. The upper end of the round hole part 4 is provided with a first groove 5, and the first groove 5 is communicated with the outside. The lower end of the round hole part 4 is provided with a second groove 6, the lower end of the second groove 6 is a sleeveless jacket 7, the sleeveless jacket 7 is cylindrical, the center of the sleeveless jacket 7 is provided with a liquid inlet hole 8, the upper end of the liquid inlet hole 8 is communicated with the injection sticking needle 3, and the lower end is communicated with the inner space of the cylinder body 1. And a glue injection hole 9 is arranged in the sleeveless jacket 7, the upper end of the glue injection hole 9 is communicated with the second groove 6, and the lower end of the glue injection hole 9 is communicated with the inner space of the cylinder 1.

When the injection needle sticking 3 is bonded, the cylinder body 1 is fixed firstly, the injection needle sticking 3 is inserted into the needle hole 2, the lower end head of the injection needle sticking 3 is contacted with the sleeveless jacket 7, and the injection needle sticking 3 can be ensured to be parallel to the axis of the needle hole 2 through the horizontal end surface of the sleeveless jacket 7, namely the verticality of the injection needle sticking 3 is ensured. And then injecting the viscose glue 10 into the first groove 5 to ensure that the injection viscose needle 3 is preliminarily fixed. Then, glue 10 is injected into the glue injection hole 9, the glue 10 enters the second groove 6, and the lower end of the injection needle 3 is fixed in the circumferential direction after solidification.

In addition, in order to ensure the sealing performance of the device, the liquid inlet end of the cylinder body 1 is sealed by a sealing plug 11, and the liquid outlet end of the cylinder body 1 is sealed by a sealing sleeve 12. The sealing at both ends is completed by a sealing plug 11 and a sealing sleeve 12.

The sealing plug 11 comprises a plug body, a plurality of sealing rings are arranged on the outer side of the plug body, and a T-shaped hole 13 is formed in one end of the plug body. The T-shaped hole 13 is convenient for forming a splicing relation with other driving mechanisms such as a driving rod at a later stage, so that the medicine liquid is conveniently injected out. Through setting up a plurality of sealing rings along length direction, can guarantee the leakproofness like this, when also guaranteeing the injection simultaneously, sealing plug 11 makes a round trip the pull convenient along barrel 1. Because the sealing plug 11 is also made of silica gel, compared with the existing injection needle made of rubber, the injection needle can avoid chemical reaction with some liquid medicine.

The sealing sleeve 12 is made of silica gel and is integrally conical, the sealing sleeve 12 comprises a sleeve body, the lower end of the sleeve body is tightly sleeved on the needle head part of the barrel body 1, the top end of the sleeve body is provided with a solid part, the inner side of the solid part is provided with a positioning groove 14, the positioning groove 14 has a positioning effect, and when the flexible sealing sleeve 12 is sleeved on the barrel body 1, the injection needle 3 is firstly right opposite to the depressed part of the positioning groove 14 and then is inserted into the solid part through the depressed part. This prevents the injection needle 3 from being inserted through the sealing sleeve 12. Since the injection needle 3 is directly inserted into the solid portion, the sealing at the outlet of the injection needle 3 can be ensured. Compared with the existing plastic sleeve, the sealing performance meets the storage requirement of the liquid medicine. In addition, because the silica gel is prepared, the silica gel can not react with some special liquid medicines, thereby ensuring the reliability. Meanwhile, the silica gel carried by the needle can be injected into a human body carelessly, so that the great physiological influence on the human body can be avoided, and the safety is realized.

Claims

1. A can keep injecting and glue perpendicular straightness's cylinder of needle, its characterized in that: comprises a cylinder body (1), a needle hole (2) is arranged at the front end of the cylinder body (1), and an injection needle (3) is fixed in the needle hole (2); the needle hole (2) comprises a round hole part (4), a first groove (5) is formed in the upper end of the round hole part (4), a second groove (6) is formed in the lower end of the round hole part (4), a waistcoat (7) is arranged at the lower end of the second groove (6), a liquid inlet hole (8) and a glue injection hole (9) are formed in the lower end of the waistcoat (7), the liquid inlet hole (8) is communicated with the injection sticking needle (3), and the glue injection hole (9) is communicated with the second groove (6); the viscose (10) is injected into the first groove (5) and the second groove (6) to fix the injection viscose needle (3).

2. The needle cylinder capable of keeping the verticality of the injection needle stick according to claim 1, wherein: the liquid inlet end of the cylinder body (1) is plugged by a sealing plug (11), and the liquid outlet end of the cylinder body (1) is plugged by a sealing sleeve (12).

3. The needle cylinder capable of keeping the verticality of the injection needle stick according to claim 2, wherein: the sealing plug (11) and the sealing sleeve (12) are both made of silica gel.

4. The needle cylinder capable of keeping the verticality of the injection needle stick according to claim 2, wherein: and a T-shaped hole (13) for inserting the piston rod is formed in the outer end of the sealing plug (11).

5. The needle cylinder capable of keeping the verticality of the injection needle stick according to claim 2, wherein: and a positioning groove (14) is arranged at the top end in the sealing sleeve (12).