CN211096601U

CN211096601U - Infusion set with anti function of backflowing

Info

Publication number: CN211096601U
Application number: CN201921643325.6U
Authority: CN
Inventors: 熊瑞; 赵娟; 林华丽
Original assignee: Guangzhou First Peoples Hospital
Current assignee: Guangzhou First Peoples Hospital
Priority date: 2019-09-29
Filing date: 2019-09-29
Publication date: 2020-07-28
Anticipated expiration: 2029-09-29

Abstract

The utility model belongs to the technical field of medical instrument, concretely relates to infusion set with anti reflux function, including stock solution mechanism, drip chamber, speed regulator, burette and syringe needle subassembly, stock solution mechanism the drip chamber with the syringe needle subassembly passes through the burette intercommunication, the speed regulator install in the drip chamber with between the syringe needle subassembly on the burette, the syringe needle subassembly with the kneck of burette is provided with anti reflux subassembly. Compared with the prior art, the utility model discloses a kneck at syringe needle subassembly and burette sets up anti backflow subassembly for when pulling out the needle or changing dressings untimely, blood can't flow back to in the burette, consequently, has effectively played anti effect of backflowing.

Description

Infusion set with anti function of backflowing

Technical Field

The utility model belongs to the technical field of medical instrument, concretely relates to infusion set with anti reflux function.

Background

As a conventional medical device, an infusion set is widely used in the medical field, is generally applied to intravenous infusion, and is a common medical consumer product.

In the process of infusion, the safety of infusion needs to be ensured, but because the traditional infusion apparatus has no protective measures, if the liquid is changed or the needle is not pulled out timely, blood backflow is easily caused, and an unexpected blood backflow phenomenon can occur. The blood return phenomenon can not only cause the dropper to be incapable of continuing transfusion due to air bubble embolism, but also cause blood to be coagulated into blood clots to cause injury to human bodies, and seriously endanger the life safety of patients.

Although some researchers and research institutions have developed some backflow prevention infusion sets or infusion devices in succession at present, for example, chinese patent with application number 201710904225.3 discloses an infusion set backflow prevention device which is arranged on a dropping funnel of an infusion set and has three mechanisms for stabilizing the liquid level of a medical solution in the dropping funnel, and in normal application, the liquid column pressure can be ensured to be always higher than the blood pressure, and blood backflow is effectively prevented, but the structure of the scheme is complex, and the adoption of a plurality of floating balls has high cost, and is not suitable for popularization and use.

In view of the above, it is desirable to provide an infusion device with a simple structure and a backflow prevention function to overcome the above-mentioned drawbacks.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: aiming at the defects of the prior art, the provided infusion device with the anti-reflux function can effectively play a role in anti-reflux, can prevent the blood reflux phenomenon caused by untimely needle pulling, and has simple structure and low cost.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides an infusion set with anti reflux function, includes stock solution mechanism, drip chamber, speed regulator, burette and syringe needle subassembly, stock solution mechanism the drip chamber with the syringe needle subassembly passes through the burette intercommunication, the speed regulator install in the drip chamber with between the syringe needle subassembly on the burette, the syringe needle subassembly with the kneck of burette is provided with anti reflux subassembly.

As right the utility model discloses in infusion set's improvement with anti reflux function, anti reflux subassembly include the casing with set up in two anti reflux diaphragms in the casing, the burette with the casing intercommunication, the liquid outlet of burette sets up in two between the anti reflux diaphragm, the end opening of anti reflux diaphragm pastes each other and leans on together two the higher authority and the lateral part reciprocal bonding connection of anti reflux diaphragm. The upper edge and the side part of the anti-reflux membrane are mutually bonded, so that the liquid medicine can flow out from the lower ports of the two anti-reflux membranes, when the needle is not pulled out in time, blood flows back under the influence of air pressure in the infusion apparatus, and the lower ports of the anti-reflux membranes are mutually attached together and can be tightly closed under the influence of pressure when the blood flows back, so that the blood is prevented from flowing back to the dropper, and the one-way flow of the liquid medicine is ensured.

As an improvement on the infusion device with the anti-backflow function, the two anti-backflow diaphragms are bonded by hot-pressing or ultrasonic welding. The two processing modes can effectively ensure the adhesion of the anti-backflow membranes and ensure the air tightness between the two anti-backflow membranes.

As an improvement to the infusion device with anti-reflux function of the present invention, the anti-reflux membrane is an elastic plastic part, a silicone part or a rubber part. The anti-backflow membrane is made of elastic materials, so that liquid medicine can smoothly pass through the lower opening of the anti-backflow membrane during liquid injection; when blood flows back, the elastic lower opening of the anti-backflow membrane is tightly closed by pressure, so that the blood is prevented from flowing back into the dropper.

As an improvement on the infusion device with the anti-reflux function in the utility model, the anti-reflux membrane is in a rectangular, circular, triangular, oval, arc or polygonal structure. The anti-backflow membrane can be set into various shapes, can be reasonably adapted according to actual needs, and mainly ensures that the two membranes are consistent in size.

As right the utility model discloses in infusion set's improvement with anti reflux function, the syringe needle subassembly includes syringe needle and syringe needle connecting pipe, the syringe needle with syringe needle connecting pipe intercommunication, the syringe needle connecting pipe with anti reflux subassembly is connected. The needle head is used for being inserted into a vein under the skin and injecting the liquid medicine into the vein; the needle head connecting pipe is used for communicating the needle head with the dropper and conveying liquid medicine for the needle head, and plays a role in connection.

As right the utility model discloses in infusion set's improvement with anti reflux function, stock solution mechanism include the reservoir and with the stock solution pipe of reservoir intercommunication, the stock solution pipe is provided with the infusion and presss from both sides, the stock solution pipe with the burette is connected. The liquid storage device can be a liquid injection bottle or a liquid injection bag and plays a role in loading liquid medicine; the transfusion clamp is arranged on the liquid storage tube to play a role in controlling the on-off of the liquid in the liquid storage tube.

As a modification to the infusion device with anti-reflux function of the present invention, the liquid reservoir is plural, and plural, the liquid reservoir is communicated with the dropper respectively. Because in clinical treatment, sometimes need carry out the injection of multiple different liquid medicines, set up the suitability that a plurality of reservoir can improve the device, need not to change the transfusion system of whole set again because of injecting different liquid medicines.

As right the utility model discloses in infusion set's improvement with anti reflux function, the dropping funnel includes the dropping funnel body and adds the pencil, the dropping funnel body with add the pencil intercommunication, be provided with the valve switch in adding the pencil, the tip cover that adds the pencil is equipped with sealed lid. The medicine feeding pipe is used for adding medicine, when the medicine feeding device is used, the valve switch is closed, the medicine is added into the medicine feeding pipe, the sealing cover is used for sealing after the medicine is added, and then the valve switch is opened to enable the added medicine to flow into the dropping funnel and be injected together with the liquid medicine in the dropping funnel.

As an improvement on the transfusion device with the anti-reflux function in the utility model, the tube wall of the drug adding tube is also provided with scales. The scale is added, so that medical personnel can conveniently observe and measure.

The beneficial effects of the utility model reside in that: the utility model discloses a stock solution mechanism, drip chamber, speed regulator, burette and syringe needle subassembly, stock solution mechanism the drip chamber with the syringe needle subassembly passes through the burette intercommunication, the speed regulator install in the drip chamber with between the syringe needle subassembly on the burette, the syringe needle subassembly with the kneck of burette is provided with anti backflow subassembly. Compared with the prior art, the utility model discloses a kneck at syringe needle subassembly and burette sets up anti backflow subassembly for when pulling out the needle or changing dressings untimely, blood can't flow back to in the burette, consequently, has effectively played anti effect of backflowing.

Drawings

The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided to explain the invention and not to constitute an undue limitation on the invention. In the drawings:

fig. 1 is a schematic structural diagram of embodiment 1 of the present invention;

FIG. 2 is a schematic structural view of the anti-backflow component of the present invention;

fig. 3 is a cross-sectional view of the anti-backflow assembly of the present invention;

FIG. 4 is a schematic structural view of the dropping funnel of the present invention;

wherein, 1-liquid storage mechanism; 2-a dropping funnel; 3-speed regulator; 4-a dropper; 5-a needle assembly; 6-an anti-backflow component; 11-a reservoir; 12-a liquid storage pipe; 21-dropping funnel body; 22-a dosing tube; 51-a needle head; 52-needle connecting tube; 61-a housing; 62-anti-backflow membrane; 121-infusion clips; 221-valve switch; 222-a sealing cover; 223-scale.

Detailed Description

As used in the specification and in the claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, within which a person skilled in the art can solve the technical problem to substantially achieve the technical result.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", horizontal "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 description and simplification of description, and do 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 thus, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be 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 according to specific situations by those skilled in the art.

The present invention will be described in further detail with reference to the accompanying drawings, which are not intended to limit the present invention.

As shown in fig. 1 to 4, an infusion device with anti-reflux function comprises a liquid storage mechanism 1, a dropping funnel 2, a speed regulator 3, a dropper 4 and a needle assembly 5, wherein the liquid storage mechanism 1, the dropping funnel 2 and the needle assembly 5 are communicated through the dropper 4, the speed regulator 3 is installed on the dropper 4 between the dropping funnel 4 and the needle assembly 5, and an anti-reflux assembly 6 is arranged at an interface of the needle assembly 5 and the dropper 4.

Preferably, the anti-backflow assembly 6 comprises a housing 61 and two anti-backflow membranes 62 arranged in the housing 61, the dropper 4 is communicated with the housing 61, the liquid outlet of the dropper 4 is arranged between the two anti-backflow membranes 62, the lower openings of the anti-backflow membranes 62 are attached to each other, and the upper edges and the side portions of the two anti-backflow membranes 62 are connected in an adhering manner. The upper edge and the side part of the anti-reflux membrane 62 are mutually bonded, so that the liquid medicine can flow out from the lower ports of the two anti-reflux membranes 62, when the needle is not pulled out in time, the blood flows back under the influence of the air pressure in the infusion apparatus, and because the lower ports of the anti-reflux membranes 62 are mutually attached together, the lower ports can be tightly closed under the influence of pressure when the blood flows back, thereby preventing the blood from flowing back into the dropper 4 and ensuring the unidirectional flow of the liquid medicine.

The anti-backflow membrane 62 is an elastic plastic part, a silicon rubber part or a rubber part, the two anti-backflow membranes 62 can be bonded in a hot pressing or ultrasonic welding mode, the anti-backflow membrane 62 is made of an elastic material, and the situation that liquid medicine can smoothly pass through the lower opening of the anti-backflow membrane 62 during liquid injection can be guaranteed; when the blood flows backward, the elastic lower port of the anti-backflow diaphragm 62 is tightly pressed, thereby preventing the blood from flowing backward into the dropper 4.

In addition, the anti-backflow membrane 62 can be in a rectangular, circular, triangular, oval, arc or polygonal structure, and can be reasonably adapted according to actual needs, so that the two membranes are mainly guaranteed to be consistent in size.

Preferably, the needle assembly 5 comprises a needle 51 and a needle connecting tube 52, the needle 51 is communicated with the needle connecting tube 52, and the needle connecting tube 52 is connected with the anti-reflux assembly 6. The needle 51 is mainly used for inserting into a vein under the skin and injecting a liquid medicine into the vein; the needle connecting tube 52 is used for connecting the needle 51 with the dropper 4 and delivering the liquid medicine to the needle 51.

Preferably, the liquid storage mechanism 1 comprises a liquid storage device 11 and a liquid storage tube 12 communicated with the liquid storage device 11, the liquid storage tube 12 is provided with a transfusion clip 121, and the liquid storage tube 12 is connected with the dropper 4. In the embodiment, the liquid storage device 11 may be a conventional liquid injection bottle or a conventional liquid injection bag, but the present invention is not limited thereto, and the liquid storage device 11 mainly plays a role of loading liquid medicine; the transfusion clip 121 is disposed on the liquid storage tube 12 to control the on-off of the liquid in the liquid storage tube 12. In clinical treatment, a plurality of different liquid medicines are generally required to be injected into a patient, and the plurality of liquid reservoirs 11 can be arranged for simultaneous injection, so that the injection efficiency is improved.

Preferably, the dropping funnel 2 comprises a dropping funnel body 21 and a dosing tube 22, the dropping funnel body 21 is communicated with the dosing tube 22, a valve switch 221 is arranged in the dosing tube 22, and a sealing cover 222 is sleeved at the end of the dosing tube 22. The medicine adding pipe 22 is used for adding medicines, when the medicine adding pipe is used, the valve switch 221 is closed, the medicines are added into the medicine adding pipe 22, the sealing cover 222 is used for sealing after the medicine adding is finished, and then the valve switch 221 is opened to enable the added medicines to flow into the dropping funnel 2 to be injected together with the liquid medicine in the dropping funnel 2; in addition, in order to facilitate observation and measurement of medical personnel, the wall of the dosing tube 22 can be provided with scales 223, so that the amount of the added medicine can be effectively controlled.

While the foregoing description shows and describes several preferred embodiments of the invention, it is to be understood, as noted above, that the invention is not limited to the forms disclosed herein, but is not intended to be exhaustive of other embodiments, and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed above, or as otherwise known in the relevant art. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.

Claims

1. The utility model provides an infusion set with anti backward flow function which characterized in that: including stock solution mechanism (1), drip chamber (2), speed regulator (3), burette (4) and syringe needle subassembly (5), stock solution mechanism (1) drip chamber (2) with syringe needle subassembly (5) pass through burette (4) intercommunication, speed regulator (3) install in drip chamber (2) with between syringe needle subassembly (5) on burette (4), syringe needle subassembly (5) with the kneck of burette (4) is provided with anti reflux subassembly (6).

2. The infusion device with anti-reflux function as claimed in claim 1, wherein: anti backflow subassembly (6) include casing (61) and set up in two anti backflow diaphragms (62) in casing (61), burette (4) with casing (61) intercommunication, the liquid outlet of burette (4) sets up in two between anti backflow diaphragm (62), the end opening of anti backflow diaphragm (62) pastes each other and leans on together, two the higher authority and the lateral part of anti backflow diaphragm (62) are adhesive bond each other and are connected.

3. The infusion device with anti-reflux function as set forth in claim 2, wherein: the bonding mode of the two anti-backflow membranes (62) is hot-press bonding or ultrasonic welding bonding.

4. The infusion device with anti-reflux function as set forth in claim 2, wherein: the anti-backflow membrane (62) is an elastic plastic part, a silicon rubber part or a rubber part.

5. The infusion device with anti-reflux function as set forth in claim 2, wherein: the anti-backflow membrane (62) is of a rectangular, circular, triangular, oval, arc or polygonal structure.

6. The infusion device with anti-reflux function as claimed in claim 1, wherein: the syringe needle subassembly (5) includes syringe needle (51) and syringe needle connecting pipe (52), syringe needle (51) with syringe needle connecting pipe (52) intercommunication, syringe needle connecting pipe (52) with anti backflow subassembly (6) are connected.

7. The infusion device with anti-reflux function as claimed in claim 1, wherein: the liquid storage mechanism (1) comprises a liquid storage device (11) and a liquid storage pipe (12) communicated with the liquid storage device (11), a transfusion clamp (121) is arranged on the liquid storage pipe (12), and the liquid storage pipe (12) is connected with the dropper (4).

8. The infusion device with anti-reflux function as set forth in claim 7, wherein: the number of the liquid reservoirs (11) is multiple, and the plurality of liquid reservoirs (11) are respectively communicated with the dropper (4).

9. The infusion device with anti-reflux function as claimed in claim 1, wherein: the dropping funnel (2) comprises a dropping funnel body (21) and a dosing pipe (22), the dropping funnel body (21) is communicated with the dosing pipe (22), a valve switch (221) is arranged in the dosing pipe (22), and a sealing cover (222) is sleeved at the end of the dosing pipe (22).

10. The infusion device with anti-reflux function as claimed in claim 9, wherein: the wall of the dosing tube (22) is also provided with scales (223).