CN211096601U - An infusion device with anti-reflux function - Google Patents

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

An infusion device with anti-reflux function

technical field

The utility model belongs to the technical field of medical devices, in particular to an infusion device with anti-reflux function.

Background technique

As a conventional medical device, the infusion set has been widely used in the medical field, usually used for intravenous infusion, and is a common medical consumer product.

During the infusion process, it is necessary to ensure the safety of the infusion. However, because the traditional infusion set has no protective measures, if the fluid is not changed or the needle is pulled out in time, it is easy to cause blood backflow, and unexpected blood backflow will occur. The phenomenon of returning blood will not only cause the dropper to be unable to continue the infusion due to air bubble embolism, but also may cause the blood to coagulate into a blood clot and cause harm to the human body, and even endanger the life of the patient.

Although some researchers and research institutions have successively developed some infusion sets or infusion devices that prevent backflow, for example, the Chinese patent with the application number of 201710904225.3 discloses a backflow prevention device for infusion sets, which is arranged on the drip bucket of the infusion set , it has three mechanisms to stabilize the liquid level of the liquid in the drip bucket. In normal application, it can ensure that the liquid column pressure is always greater than the blood pressure, effectively preventing blood backflow, but the structure of this solution is relatively complex, and multiple floating balls are used. , the cost is high, and it is not suitable for promotion.

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

Utility model content

The purpose of this utility model is to: aiming at the deficiencies of the prior art, to provide a transfusion device with anti-reflux function, the device can effectively play the role of anti-reflux, and can prevent the phenomenon of blood reflux caused by untimely needle extraction , and the device has a simple structure and low cost.

To achieve the above object, the utility model adopts the following technical solutions:

An infusion device with anti-reflux function, comprising a liquid storage mechanism, a drip hopper, a governor, a drip tube and a needle assembly, and the liquid storage mechanism, the drip hopper and the needle assembly are communicated through the drip tube , the governor is installed on the drip tube between the drip bucket and the needle assembly, and an anti-reflux component is provided at the interface between the needle assembly and the drip tube.

As an improvement to the infusion device with anti-reflux function described in the present invention, the anti-reflux component includes a casing and two anti-reflux diaphragms arranged in the casing, the drip tube is connected to the The shell is connected, the liquid outlet of the drip tube is arranged between the two anti-reflux diaphragms, the lower openings of the anti-reflux diaphragms are pressed against each other, and the two anti-reflux diaphragms The upper edge and the side portion of the diaphragm are bonded and connected to each other. The top and side of the anti-reflux diaphragm are bonded to each other, so that the liquid can flow out between the lower ports of the two anti-reflux diaphragms. Since the lower ports of the anti-reflux diaphragm are abutted against each other, the lower ports will be tightly closed due to the influence of pressure during blood backflow, thereby preventing the blood from flowing back into the dropper and ensuring the unidirectional flow of the medicinal liquid.

As an improvement to the infusion device with anti-reflux function described in the present utility model, the bonding method of the two anti-reflux membranes is thermocompression bonding or ultrasonic welding bonding. Both of these two processing methods can effectively ensure the adhesion of the anti-reflux diaphragms and ensure the air tightness between the two anti-reflux diaphragms.

As an improvement to the infusion device with anti-reflux function described in the present invention, the anti-reflux diaphragm is an elastic plastic part, a silicone part or a rubber part. The anti-reflux diaphragm is made of elastic material, which can ensure that the liquid can pass through the lower port of the anti-reflux diaphragm when the liquid is injected; and when the blood returns, the elastic lower port of the anti-reflux diaphragm will be tightly closed by pressure. , thereby preventing the backflow of blood into the dropper.

As an improvement to the infusion device with anti-reflux function described in the present invention, the anti-reflux diaphragm has a rectangular, circular, triangular, oval, arc or polygonal structure. The anti-reflux diaphragm can be set in various shapes, and can be reasonably adapted according to actual needs, mainly to ensure that the size of the two diaphragms is the same.

As an improvement to the infusion device with anti-reflux function described in the present invention, the needle assembly includes a needle and a needle connecting tube, the needle is communicated with the needle connecting tube, and the needle connecting tube is connected with the anti-reflux function. Reflux assembly connection. The needle is used for inserting into the vein under the skin, and the medicinal liquid is injected into the vein; the needle connecting tube is used for connecting the needle with the dropper, and transporting medicinal liquid for the needle, which plays the role of connection.

As an improvement to the infusion device with anti-reflux function described in the present utility model, the liquid storage mechanism includes a liquid storage tank and a liquid storage pipe communicating with the liquid storage tank, and the liquid storage pipe is provided with an infusion clip , the liquid storage tube is connected with the dropper. The liquid reservoir can be a liquid injection bottle or a liquid injection bag, which plays the role of loading the liquid medicine; the infusion clip is arranged on the liquid storage tube, and plays the role of controlling the on-off of the liquid medicine in the liquid storage tube.

As an improvement to the infusion device with anti-reflux function described in the present utility model, there are a plurality of the liquid accumulators, and the plurality of the liquid accumulators are respectively connected with the drip tube. Since in clinical treatment, it is sometimes necessary to inject a variety of different liquid medicines, setting up multiple liquid reservoirs can improve the applicability of the device, and there is no need to replace the entire set of infusion sets due to the injection of different liquid medicines.

As an improvement to the infusion device with anti-reflux function described in the present utility model, the drip hopper includes a drip hopper body and a dosing pipe, the drip hopper body is communicated with the drug dosing pipe, and the drug dosing pipe A valve switch is arranged in the middle, and a sealing cover is sleeved at the end of the dosing tube. The dosing tube is used to add drugs. When in use, the valve switch is closed, and the drug is added into the dosing tube. After the dosing is completed, the sealing cover is used to seal it, and then the valve switch is opened to allow the added drug to flow into the drip hopper and into the drip hopper. injection together with the drug solution.

As an improvement to the infusion device with anti-reflux function described in the present utility model, the tube wall of the drug adding tube is also provided with a scale. The addition of a scale can facilitate the observation and measurement of medical staff.

The beneficial effect of the utility model is that: the utility model comprises a liquid storage mechanism, a drip hopper, a governor, a drip tube and a needle assembly, and the liquid storage mechanism, the drip hopper and the needle assembly are communicated through the drip tube , the governor is installed on the drip tube between the drip bucket and the needle assembly, and an anti-reflux component is provided at the interface between the needle assembly and the drip tube. Compared with the prior art, the present invention provides an anti-reflux component at the interface between the needle assembly and the dropper, so that the blood cannot flow back into the dropper when the needle is pulled out or the dressing is not changed in time. to the anti-reflux effect.

Description of drawings

The accompanying drawings described here are used to provide a further understanding of the present utility model and constitute a part of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. . In the attached image:

Fig. 1 is the structural representation of embodiment 1 in the utility model;

2 is a schematic structural diagram of an anti-reflux assembly in the present invention;

3 is a cross-sectional view of the anti-reflux assembly in the present invention;

Fig. 4 is the structural representation of drip hopper in the utility model;

Among them, 1- liquid storage mechanism; 2- drip bucket; 3- speed governor; 4- drip tube; 5- needle assembly; 6- anti-reflux assembly; 11- liquid reservoir; 12- liquid storage tube; 21- Dripper body; 22-dosing tube; 51-needle; 52-needle connecting tube; 61-shell; 62-anti-reflux diaphragm; 121-infusion clip; 221-valve switch; 222-sealing cover; 223- scale.

Detailed ways

As used in the specification and claims, certain terms are used to refer to particular components. It should be understood by those skilled in the art that hardware manufacturers may refer to the same component by different nouns. The description and claims do not use the difference in name as a way to distinguish components, but use the difference in function of the components as a criterion for distinguishing. As mentioned in the entire specification and claims, "comprising" is an open-ended term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve the technical problem within a certain error range, and basically achieve the technical effect.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", horizontal" etc. The orientation or positional relationship shown in the figures is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as Limitations of the present invention.

In the present utility model, unless otherwise expressly specified and limited, the terms "installation", "connection", "connection", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

The present utility model will be further described in detail below in conjunction with the accompanying drawings, but it is not intended to limit the present utility model.

As shown in Figures 1 to 4, an infusion device with anti-reflux function includes a liquid storage mechanism 1, a drip hopper 2, a governor 3, a drip tube 4 and a needle assembly 5, a liquid storage mechanism 1, a drip hopper 2 It communicates with the needle assembly 5 through the dropper 4, the governor 3 is installed on the dropper 4 between the dropper 4 and the needle assembly 5, and an anti-reflux component 6 is provided at the interface of the needle assembly 5 and the dropper 4.

Preferably, the anti-reflux assembly 6 includes a casing 61 and two anti-reflux diaphragms 62 arranged in the casing 61 , the drip tube 4 is communicated with the casing 61 , and the liquid outlet of the drip tube 4 is arranged on the two anti-reflux diaphragms 62 . Between the backflow diaphragms 62 , the lower openings of the anti-reflux diaphragms 62 abut against each other, and the upper edges and side portions of the two anti-reflux diaphragms 62 are bonded and connected to each other. The upper side and the side of the anti-reflux diaphragm 62 are bonded to each other, so that the medicinal liquid can flow out between the lower ports of the two anti-reflux diaphragms 62. When the needle is not pulled out in time, the blood will flow back under the influence of the air pressure in the infusion set. , and because the lower ports of the anti-reflux diaphragm 62 are abutted against each other, the lower ports will be tightly closed due to the influence of pressure during blood backflow, thereby preventing the blood from flowing back into the dropper 4 and ensuring the one-way flow of the medicinal solution. flow.

Among them, the anti-reflux diaphragm 62 is an elastic plastic part, a silicone part or a rubber part. The two anti-reflux diaphragms 62 can be bonded by hot pressing or ultrasonic welding. The anti-reflux diaphragm 62 is made of elastic The material can ensure that the lower port of the anti-reflux diaphragm 62 can pass through smoothly when the liquid is injected; and when the blood returns, the elastic lower port of the anti-reflux diaphragm 62 will be tightly closed by pressure, thereby preventing blood Return to dropper 4.

In addition, the anti-reflux diaphragm 62 can have a rectangular, circular, triangular, elliptical, arc or polygonal structure, and can be reasonably adapted according to actual needs, mainly ensuring that the sizes of the two diaphragms are the same.

Preferably, the needle assembly 5 includes a needle 51 and a needle connecting tube 52 , the needle 51 communicates 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 the vein under the skin, and injecting the medicinal liquid into the vein; and the needle connecting tube 52 is used for connecting the needle 51 with the dropper 4, and transporting medicinal liquid for the needle 51, which plays the role of connection.

Preferably, the liquid storage mechanism 1 includes a liquid storage tank 11 and a liquid storage tube 12 communicated with the liquid storage tank 11 . As in this embodiment, the liquid reservoir 11 can be a conventional liquid injection bottle or a liquid injection bag, but the present invention is not limited to this, and the liquid reservoir 11 mainly plays the role of loading liquid medicine; The liquid storage pipe 12 plays a role of controlling the on-off of the medicinal liquid in the liquid storage pipe 12 . However, in clinical treatment, it is usually necessary to inject a variety of different medicinal liquids into a patient, and multiple liquid reservoirs 11 are provided to allow simultaneous injection, thereby improving the efficiency of liquid injection.

Preferably, the drip hopper 2 includes a drip hopper body 21 and a dosing pipe 22, the drip hopper body 21 is communicated with the dosing pipe 22, a valve switch 221 is arranged in the dosing pipe 22, and the end of the dosing pipe 22 is sleeved with a seal Cover 222. The dosing tube 22 is used for adding drugs. When in use, the valve switch 221 is closed, and the drug is added into the dosing tube 22. After the dosing is completed, the sealing cover 222 is used to seal it, and then the valve switch 221 is opened to allow the added drug to flow in. The drip hopper 2 is injected together with the medicinal liquid in the drip hopper 2; in addition, in order to facilitate the observation and measurement of medical staff, a scale 223 can also be set on the wall of the dosing tube 22 to effectively control the amount of medicine added.

The above description shows and describes several preferred embodiments of the present invention, but as mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as the exclusion of other embodiments, but the available Various other combinations, modifications and environments, and can be modified from the above teachings or skill or knowledge in the relevant fields, within the scope of the inventive concept described herein. However, modifications and changes made by those skilled in the art do not depart from the spirit and scope of the present invention, and should all fall within the protection scope of the appended claims of the present invention.

Claims (10)

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).

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