CN215690502U

CN215690502U - Infusion device

Info

Publication number: CN215690502U
Application number: CN202121238394.6U
Authority: CN
Inventors: 蒋赏
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-06-03
Filing date: 2021-06-03
Publication date: 2022-02-01
Anticipated expiration: 2031-06-03

Abstract

The invention relates to an infusion device which comprises an infusion tube, a needle and an anti-backflow mechanism, wherein the anti-backflow mechanism is arranged on the infusion tube, the needle is communicated with the infusion tube, the anti-backflow mechanism comprises a cavity, the cavity comprises an inlet and an outlet, the outlet is used for conveying liquid to the needle, an anti-backflow sheet is arranged in the cavity, the anti-backflow sheet partitions the cavity, the anti-backflow sheet can move between the outlet and the inlet, when the anti-backflow sheet moves towards the outlet, the anti-backflow sheet opens the cavity, and when the anti-backflow sheet moves towards the inlet, the anti-backflow sheet resets. This application is through setting up anti-return mechanism, can avoid the condition of blood backward flow to take place effectively.

Description

Infusion device

Technical Field

The invention belongs to the field of infusion sets, and particularly relates to an infusion device.

Background

Infusion is usually a large-volume injection, and usually involves infusing an injection solution into the body by intravenous drip, and the volume of the infusion solution administered at a time is 100ml or more. When the infusion is carried out, the dropping speed is adjusted by the infusion apparatus, and the medicine in the bottle is continuously and stably infused into the body. However, during the infusion process, if the liquid in the bottle is low or the position of the infusion bottle is too low relative to the injection position, the internal pressure of the body is higher than the internal pressure of the bottle, and at this time, the blood backflow is easy to occur. The above problems are technical problems to be solved in the art.

Disclosure of Invention

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide an infusion device that can effectively prevent the occurrence of blood backflow.

The technical scheme for solving the technical problems is as follows: an infusion device comprises an infusion tube, a needle head and an anti-backflow mechanism, wherein the anti-backflow mechanism is arranged on the infusion tube, the needle head is communicated with the infusion tube,

the anti-backflow mechanism comprises a cavity, the cavity comprises an inlet and an outlet, the outlet is used for conveying liquid to the needle head, an anti-backflow sheet is arranged in the cavity, the anti-backflow sheet is separated from the cavity, the anti-backflow sheet can be moved between the outlet and the inlet, when the anti-backflow sheet faces towards the outlet, the anti-backflow sheet is opened, when the anti-backflow sheet faces towards the inlet, the anti-backflow sheet resets.

The infusion set disclosed in the application has the beneficial effects that: this application is at the during operation, and the liquid medicine is flowed towards the export by the import of cavity, and at this moment, the liquid medicine can drive the anti-reflux piece and remove towards the export to open the cavity, in the syringe needle can be carried to the liquid medicine, when taking place the blood backward flow, liquid in the cavity flows in the opposite direction, thereby drive the anti-reflux piece and remove to the import, makes the anti-reflux piece reset, cuts off the cavity again, and then plays the effect that prevents the blood backward flow.

In an optional embodiment, the backflow-preventing piece includes two, one end of the backflow-preventing piece is a fixed end, the other end of the backflow-preventing piece is a free end, the two fixed ends are fixed on the two opposite side walls in the cavity, the free ends of the two backflow-preventing pieces are in sealing abutting joint with each other, and when the backflow-preventing piece moves downwards, the two free ends are away from each other.

In an alternative embodiment, the length of the backflow prevention piece is greater than half of the distance between the fixed ends of the two backflow prevention pieces.

In an alternative embodiment, a side of the backflow preventing piece facing the inlet is an arc surface protruding towards the inlet, and a side of the backflow preventing piece facing the outlet is an arc surface recessed towards the inlet.

In an alternative embodiment, the backflow-preventing piece is an elastic piece, and the elastic force of the backflow-preventing piece is used for driving the backflow-preventing piece to reset when the fluid in the cavity is static.

In an optional embodiment, the infusion apparatus further comprises a bottle stopper puncture outfit, a dropping funnel, a flow regulator and a liquid medicine filter which are sequentially connected through an infusion tube, the needle head is arranged at one end of the infusion tube far away from the bottle stopper puncture outfit, and the backflow preventing mechanism is arranged between the liquid medicine filter and the needle head.

Drawings

FIG. 1 is an overall schematic view of an embodiment of the present application;

FIG. 2 is a cross-sectional view of the anti-reflux mechanism of the embodiment of the present application during infusion;

FIG. 3 is a cross-sectional view of the backflow prevention mechanism in an embodiment of the present application;

description of reference numerals: 1. a transfusion tube; 2. a backflow prevention mechanism; 21. a cavity; 22. an inlet; 23. an outlet; 24. a backflow prevention sheet; 3. a needle head; 4. a bottle stopper puncture outfit; 5. a dropping funnel; 6. a flow regulator; 7. a liquid medicine filter.

Detailed Description

The principles and features of this application are described below in conjunction with the drawings and the embodiments, which are set forth to illustrate the application and not to limit the scope of the application.

The following discloses many different embodiments or examples for implementing the subject technology described. While specific examples of one or more arrangements of features are described below to simplify the disclosure, the examples should not be construed as limiting the present disclosure, and a first feature described later in the specification in conjunction with a second feature can include embodiments that are directly related, can also include embodiments that form additional features, and further can include embodiments in which one or more additional intervening features are used to indirectly connect or combine the first and second features to each other so that the first and second features may not be directly related.

The application discloses infusion set's embodiment, it includes transfer line 1, syringe needle 3 and anti-return mechanism 2, and wherein, anti-return mechanism 2 installs on transfer line 1, and syringe needle 3 communicates with the tip of transfer line 1, promptly, and anti-return mechanism 2's both ends are connected with two sections transfer lines 1 respectively, and transfer line 1 that is located anti-return mechanism 2 one side communicates with syringe needle 3 again.

In the embodiment of the present application, the backflow prevention mechanism 2 includes a cavity 21, an inlet 22 and an outlet 23 are opened on the cavity 21, the inlet 22 and the outlet 23 are respectively connected to two sections of infusion tubes 1, wherein the outlet 23 is connected to the infusion tube 1 close to the needle 3, the liquid is conveyed to the needle 3 through the outlet 23, a backflow prevention sheet 24 is installed in the cavity 21, the backflow prevention sheet 24 partitions the cavity 21, the backflow prevention sheet 24 can move between the outlet 23 and the inlet 22, when the backflow prevention sheet 24 moves towards the outlet 23, the backflow prevention sheet 24 opens the cavity 21, and when the backflow prevention sheet 24 moves towards the inlet 22, the backflow prevention sheet 24 resets.

This application is at the during operation, the liquid medicine flows towards export 23 by the import 22 of cavity 21, at this moment, the liquid medicine can drive anti-reflux piece 24 and remove towards export 23 to open cavity 21, make in the liquid medicine can carry syringe needle 3, when taking place the blood backward flow, the liquid in the cavity 21 flows in the opposite direction, thereby drive anti-reflux piece 24 and remove to import 22, make anti-reflux piece 24 reset, cut off cavity 21 again, and then prevent that blood from continuing to flow backwards.

In a more specific embodiment, the anti-backflow sheet 24 includes two fixed ends, one end of the anti-backflow sheet 24 is a fixed end, the other end is a free end, the two fixed ends are fixed on two opposite side walls in the cavity 21, the free ends of the two anti-backflow sheets 24 are in sealing abutment with each other to block the cavity 21, when the anti-backflow sheet 24 moves downward, the two free ends are away from each other, in one example, the fixed ends are hinged with the side walls of the cavity 21, the whole anti-backflow sheet 24 rotates up and down around the fixed ends, when the whole anti-backflow sheet 24 rotates downward, the two free ends are away from each other to open the cavity 21, when the whole anti-backflow sheet 24 moves upward, the two free ends approach each other until abutment to block the cavity 21, preferably, wherein the length of the anti-backflow sheet 24 is greater than half of the distance between the two fixed ends of the anti-backflow sheet 24, thereby enabling, the anti-backflow sheet 24 cannot move towards the inlet 22 after abutting, so that the limiting effect is achieved.

In addition, in some embodiments, one side of the backflow-preventing piece 24 facing the inlet 22 is an arc surface protruding towards the inlet 22, one side of the backflow-preventing piece 24 facing the outlet 23 is an arc surface recessed towards the inlet 22, the structure is similar to a heart valve, the arc surface has a flow reversing and guiding effect, when fluid flows from the inlet 22 to the outlet 23, the arc surface protruding towards the inlet 22 can reduce resistance of the fluid, the fluid flows backwards between the two backflow-preventing pieces 24, at the moment, the backflow-preventing pieces 24 are converged by impact force, so that the free ends are retracted inwards, the free ends are separated from each other, and a cavity is opened, and when the fluid flows backwards, the arc surface recessed relative to the outlet 23 can flow backwards into the arc surface, at the moment, the arc surface is forced to be spread outwards, so that the free ends of the backflow-preventing pieces 24 are spread and close together, and the backflow-preventing pieces 24 are pushed to move and reset towards the inlet 22.

Further, in some embodiments, the backflow preventing piece 24 may be provided as an elastic member, for example, in consideration of the fact that the backflow liquid and the injection liquid are in an equilibrium state at times when the backflow liquid does not bring the backflow preventing piece 24 closed. The anti-backflow sheet 24 can be made of elastic plastic, and the elastic direction of the anti-backflow sheet 24 faces the inlet 22, so that the anti-backflow sheet 24 can be driven to reset through the elastic force when the backflow liquid and the injection are balanced, and the cavity 21 is closed.

In addition, this application still includes bottle plug puncture ware 4, drip chamber 5, flow regulator 6 and liquid medicine filter 7 that connect gradually through transfer line 1, and syringe needle 3 sets up in the one end that bottle plug puncture ware 4 was kept away from to transfer line 1, and anti-return mechanism 2 sets up between liquid medicine filter 7 and syringe needle 3, and when using, through inserting the medicine with bottle plug puncture ware 4, inserts vein with syringe needle 3 and begins the infusion.

This application is through setting up anti-return mechanism 2, can avoid the condition of blood backward flow to take place effectively.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. An infusion device is characterized by comprising an infusion tube, a needle head and an anti-backflow mechanism, wherein the anti-backflow mechanism is arranged on the infusion tube, the needle head is communicated with the infusion tube,

2. The infusion set as claimed in claim 1, wherein said anti-reflux flaps include two fixed ends at one end and two free ends at the other end, said fixed ends being fixed to opposite side walls of said chamber, said free ends of said two anti-reflux flaps being in sealing abutment with each other, and said free ends being spaced apart from each other when said anti-reflux flaps are moved downward.

3. The infusion device as claimed in claim 2, wherein the length of the anti-reflux tab is greater than half the distance between the fixed ends of the two anti-reflux tabs.

4. The infusion device as claimed in claim 2 or 3, wherein a side of said backflow prevention piece facing said inlet is a curved surface protruding toward said inlet, and a side of said backflow prevention piece facing said outlet is a curved surface recessed toward said inlet.

5. The infusion device as claimed in claim 4, wherein the anti-reflux tab is a resilient member, the resilience of the anti-reflux tab being adapted to urge the anti-reflux tab to return when the fluid in the chamber is at rest.

6. The infusion device as claimed in any one of claims 1 to 3, further comprising a stopper puncture outfit, a dropping funnel, a flow regulator and a medical fluid filter connected in sequence through an infusion tube, wherein the needle is disposed at an end of the infusion tube remote from the stopper puncture outfit, and the backflow prevention mechanism is disposed between the medical fluid filter and the needle.