CN220046806U

CN220046806U - Liquid injection anti-backflow structure

Info

Publication number: CN220046806U
Application number: CN202320644244.8U
Authority: CN
Inventors: 袁彩萍; 郑逸
Original assignee: Zhejiang Provincial Peoples Hospital
Current assignee: Zhejiang Provincial Peoples Hospital
Priority date: 2023-03-29
Filing date: 2023-03-29
Publication date: 2023-11-21
Anticipated expiration: 2033-03-29

Abstract

The utility model discloses a liquid injection backflow prevention structure, which comprises an injection tube, wherein one end of the injection tube is provided with an injection head, a U-shaped injection hole is formed in the injection head, a U-shaped opening of the U-shaped injection hole faces to one side far away from the injection tube, a valve is arranged at the U-shaped injection hole, the middle position of the valve is fixedly connected with the injection tube, the liquid injection backflow prevention structure further comprises a sealing cap for sealing the injection head, a film pressing block for pressing and sealing the valve is fixedly arranged on the inner side wall of the sealing cap, and the valve arranged through the U-shaped injection hole can play a good backflow prevention role under the condition of not influencing liquid injection; the barrier strip can realize the limit support of the valve and prevent the transition deformation of the valve under the action of external pressure.

Description

Liquid injection anti-backflow structure

Technical Field

The utility model relates to the technical field of injection, in particular to a liquid injection backflow preventing structure.

Background

Constipation affects normal life of people, and because intestinal contents stay in colon for a long time, water is absorbed excessively to harden the stool and even cause excrement impaction, the disease is confusing the normal life of people for a long time, anxiety and depression are easy to occur, and large physiological and psychological burden is caused, enema is a common medicine for treating constipation, is mainly used for treating and improving constipation of children and old and weak people, and is administrated by rectum of adults, a bottle cap of a container is taken off, a small amount of liquid lubrication pipe orifice is discharged, a patient lies on one side and bends two knees, a medicine pipe is slowly inserted into anus, and then liquid medicine is extruded into the rectum to be pulled out.

The extrusion device that application number 202120719188.0 used is assisted to open the enema holds chamber and soft pipe intercommunication, holds the chamber and opens and have one to get and put the window, gets to put and is equipped with airtight structure on the window, and airtight structure enables to get and puts the window and switch each other between opening, closed two kinds of states, and the sealing plug is fixed in the junction that holds between chamber and the soft pipe, has the tight closed strip seam under the natural state in the middle of the sealing plug, and extrusion subassembly effect is on holding the chamber, can extrude and hold the chamber, reduces the volume that holds the chamber. The soft catheter is used for avoiding scratch of a patient, the soft catheter is matched with the sealing plug, backflow is prevented, the process that liquid in the enema is extruded to the extrusion device before use is avoided, the liquid in the enema only flows through the soft catheter, and the extrusion device has little loss on the enema;

in the prior art, when the liquid is squeezed into the body, if the pressure on the hand is not maintained, the squeezed liquid returns to the bottle, but if the continuous squeezing is too laborious, the liquid can flow out of the body and lose the lubrication effect.

Disclosure of Invention

The present utility model is directed to a liquid injection backflow prevention structure, which solves the above-mentioned problems, and is intended to overcome the drawbacks of the prior art, as described in detail below.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a liquid injection backflow prevention structure, which comprises an injection tube, wherein an injection head is arranged at one end of the injection tube, a U-shaped injection hole is formed in the injection head, a U-shaped opening of the U-shaped injection hole faces to one side far away from the injection tube, a valve is arranged at the U-shaped injection hole, and the middle position of the valve is fixedly connected with the injection tube.

Preferably, the valve sealing device further comprises a sealing cap for sealing the injection head, wherein a film pressing block for pressing and sealing the valve is fixedly arranged on the inner side wall of the sealing cap.

Preferably, a central shaft lever is fixedly arranged on one side of the injection tube close to the inner side of the U-shaped injection hole, and the central shaft lever and the middle position of the bottom side of the valve are fixedly connected with each other.

Preferably, two barrier strips which are symmetrically distributed by taking the central shaft rod as a center are fixedly arranged on the inner side wall of the injection head, and the barrier strips are attached to the inner side wall of the valve.

Preferably, the valve is made of rubber material, and the thickness of the valve is 2mm-4mm.

Preferably, the injection head has a hemispherical outer shape.

Preferably, a flange for limiting the abutting of the sealing cap is arranged on the outer side wall of one end, close to the injection head, of the injection tube.

The beneficial effects are that:

1. the valve arranged through the U-shaped injection hole can play a good role in preventing backflow under the condition of not influencing the injection of liquid;

2. the barrier strips can realize limit support of the valve and prevent the valve from transitional deformation under the action of external pressure;

3. the U-shaped injection hole is arranged on the hemispherical injection head, so that the scratch can be avoided during injection, and the flow direction of liquid injection can be ensured to be consistent with the axial direction of the injection tube.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a front view of the present utility model;

FIG. 2 is a cross-sectional view A-A of FIG. 1 in accordance with the present utility model;

FIG. 3 is a perspective view of FIG. 1 of the present utility model;

fig. 4 is an enlarged view of a portion of the utility model at B of fig. 2.

The reference numerals are explained as follows: 1. a syringe; 2. an injection head; 3. a sealing cap; 4. film pressing blocks; 5. a valve; 6. a U-shaped injection hole; 7. a barrier strip; 8. a central shaft; 9. and a flange.

Detailed Description

In order to make the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be described in detail below. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, based on the examples herein, which are within the scope of the utility model as defined by the claims, will be within the scope of the utility model as defined by the claims.

Referring to fig. 1-4, the utility model provides a liquid injection backflow prevention structure, which comprises an injection tube 1, wherein an injection head 2 is arranged at one end of the injection tube 1, the injection head 2 is hemispherical in shape, a U-shaped injection hole 6 is formed in the injection head 2, a U-shaped opening of the U-shaped injection hole 6 faces to one side far away from the injection tube 1, a valve 5 is arranged at the U-shaped injection hole 6, the valve 5 is made of rubber materials, and the thickness of the valve 5 is 2-4 mm. The middle position of the valve 5 and the injection tube 1 are fixedly connected with each other. In practical application, the valve 503 is made of rubber material, has a certain elasticity, and can be reset under the action of the self elastic force after the valve 5 is deformed by the impact of liquid.

The liquid injection backflow prevention structure further comprises a sealing cap 3 used for sealing the injection head 2, and a film pressing block 4 used for pressing and sealing the valve 5 is fixedly arranged on the inner side wall of the sealing cap 3. The outer side wall of one end of the injection tube 1, which is close to the injection head 2, is provided with a flange 9 for limiting the abutting connection with the sealing cap 3.

The injection tube 1 is fixedly provided with a central shaft lever 8 at one side close to the inside of the U-shaped injection hole 6, and the central shaft lever 8 and the middle position of the bottom side of the valve 5 are fixedly connected with each other.

Two barrier strips 7 which are symmetrically distributed by taking a central shaft lever 8 as a center are fixedly arranged on the inner side wall of the injection head 2, and the barrier strips 7 are attached to the inner side wall of the valve 5. The barrier strips 7 can realize limit support on the valve 5 and prevent the valve 5 from transitional deformation under the action of external pressure.

Working principle:

in practical application, when liquid needs to be injected, one end of the injection tube 1 far away from the injection head 2 is connected with an external injector or a liquid storage bottle body, liquid such as enema liquid is injected through the injection head 2, at the moment, liquid generated by extrusion extrudes the valve 5, so that two sides of the valve 5 are close to each other, the U-shaped injection hole 6 is in an open state, the injection of the liquid is realized, when the injection is stopped, the valve 5 is reset under the action of self-elasticity and is tightly attached to the U-shaped injection hole 6, the barrier 7 can realize limit support of the valve 5, play a backflow prevention role on the liquid, and prevent transition deformation of the valve 5 under the action of external pressure.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a liquid injection prevents structure that flows backward which characterized in that: including injection tube (1), the one end of injection tube (1) is provided with injection head (2), U type injection hole (6) have been seted up on injection head (2), the U type opening of U type injection hole (6) is towards the one side of keeping away from injection tube (1), U type injection hole (6) department is provided with valve (5), the middle part position and the injection tube (1) of valve (5) are fixed connection each other.

2. A liquid injection backflow preventing structure according to claim 1, wherein: the injection device is characterized by further comprising a sealing cap (3) for sealing the injection head (2), wherein a film pressing block (4) for pressing and sealing the valve (5) is fixedly arranged on the inner side wall of the sealing cap (3).

3. A liquid injection backflow preventing structure according to claim 1, wherein: a central shaft lever (8) is fixedly arranged on one side of the injection tube (1) close to the inside of the U-shaped injection hole (6), and the central shaft lever (8) and the middle position of the bottom side of the valve (5) are fixedly connected with each other.

4. A liquid injection backflow preventing structure according to claim 1, wherein: two baffle strips (7) which are symmetrically distributed by taking a central shaft lever (8) as a center are fixedly arranged on the inner side wall of the injection head (2), and the baffle strips (7) are attached to the inner side wall of the valve (5).

5. A liquid injection backflow preventing structure according to claim 1, wherein: the valve (5) is made of rubber materials, and the thickness of the valve (5) is 2mm-4mm.

6. A liquid injection backflow preventing structure according to claim 1, wherein: the injection head (2) has a hemispherical shape.

7. A liquid injection backflow preventing structure according to claim 2, wherein: a flange (9) for limiting the abutting connection of the sealing cap (3) is arranged on the outer side wall of one end, close to the injection head (2), of the injection tube (1).