CN219231015U

CN219231015U - Safe liquid medicine filter for infusion apparatus

Info

Publication number: CN219231015U
Application number: CN202222755013.2U
Authority: CN
Inventors: 乔卫龙
Original assignee: Jintang Second People's Hospital
Current assignee: Jintang Second People's Hospital
Priority date: 2022-10-19
Filing date: 2022-10-19
Publication date: 2023-06-23
Anticipated expiration: 2032-10-19

Abstract

The utility model relates to the technical field of transfusion apparatuses and discloses a safe transfusion apparatus liquid medicine filter, which comprises a transfusion tube and a filter shell connected into the transfusion tube, wherein a filter membrane is arranged in the filter shell, a filter membrane solid region is arranged on the filter membrane, the region of the filter membrane outside the filter membrane solid region is a filter region, a floating valve is arranged above the filter membrane, the floating valve moves close to or far away from the filter membrane, a floating valve hollow region is arranged at a position of the floating valve corresponding to the filter membrane solid region, the region of the floating valve outside the floating valve hollow region is a floating valve solid region, and the size of the floating valve hollow region is equal to or smaller than that of the filter membrane solid region. Not only has the function of filtering liquid medicine, but also can realize automatic stopping after the liquid medicine infusion is finished, thereby guaranteeing the life safety of patients under special conditions.

Description

Safe liquid medicine filter for infusion apparatus

Technical Field

The utility model relates to the technical field of infusion apparatuses, in particular to a safe liquid medicine filter for an infusion apparatus.

Background

The middle connecting part of the infusion tube of the disposable infusion set commonly used in clinic at present mainly comprises a drip cup and a liquid medicine filter, and the movable part mainly comprises a flow velocity regulator and a flow stopping clamp. The flow rate is regulated by a flow rate regulator in clinical use, and when the infusion of the liquid medicine is finished, a person is required to finish the infusion by the flow rate regulator. Under the special conditions of unattended operation or unattended operation concerning the liquid medicine infusion process and the like, the medical risk of air embolism is easily caused by the fact that gas enters into a human body blood vessel after the liquid medicine infusion is finished. The existing patent technology is to add floating bodies and the like in the drip cup of the infusion apparatus to automatically stop infusion of liquid medicine, so that the assembly difficulty is high and the cost is high.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provide a safe liquid medicine filter for an infusion apparatus, which not only has a liquid medicine filtering function, but also can realize automatic stopping after the liquid medicine infusion is finished so as to ensure the life safety of patients under special conditions.

The aim of the utility model is realized by the following technical scheme: the utility model provides a safe transfusion system liquid medicine filter, includes the transfer line, still includes the filtration casing that links into the transfer line, be provided with the filter membrane in the filtration casing, be equipped with the solid district of filter membrane on the filter membrane, the filter membrane is in the region outside the solid district of filter membrane is the filtration district, the top of filter membrane is provided with the float valve, the float valve is close to or keep away from the filter membrane removes, the float valve corresponds the position of the solid district of filter membrane is equipped with the float valve hollow zone, the float valve is in the region outside the hollow district of float valve is the solid district of float valve, the size of float valve hollow zone is equal to or less than the size of the solid district of filter membrane.

The technical scheme has the advantages that in the normal transfusion process, the floating valve floats on the liquid medicine, so that a space for the liquid medicine to circulate is formed between the floating valve and the filter membrane, the liquid medicine flows into the liquid medicine circulation space through the floating valve hollow area of the floating valve and flows out of the filter area of the filter membrane, the liquid medicine is filtered by the filter area, so that the filtering function of the transfusion device is reserved, when the liquid medicine is completely infused, the floating valve sinks along with the liquid level until the liquid medicine is attached to the filter membrane, the floating valve hollow area is blocked by the filter membrane solid area, the filter area is blocked by the floating valve solid area, thereby blocking the conduction of the filter shell, and meanwhile, the floating valve is tightly attached to the filter membrane by means of negative pressure, so that the sealing strength is improved, the transfusion is stopped, and air is prevented from entering a human blood vessel, so that the life safety of a patient under special conditions is ensured.

In some embodiments, the filtering area is provided with a plurality of filtering holes, so that the filtering membrane can filter the liquid medicine, and the original filtering function of the infusion apparatus is reserved.

In some embodiments, the filtering shell comprises an upper shell and a lower shell, the upper shell is detachably connected to the top of the lower shell, a liquid inlet pipe is arranged on the top of the upper shell in a communicating manner, a liquid outlet pipe is arranged on the bottom of the lower shell in a communicating manner, liquid medicine flows in from the liquid inlet pipe and is discharged from the liquid outlet pipe, the filtering shell adopts a split type structure, the filter membrane and the floating valve are conveniently installed, and the manufacturing difficulty of the liquid medicine filter is reduced.

In some embodiments, the upper shell comprises a hollow cylinder and a hollow cone, the hollow cylinder is fixedly connected with the large-diameter end of the hollow cone, the liquid inlet pipe is connected with the small-diameter end of the hollow cone, and the floating valve is blocked by the hollow cone, so that the floating valve cannot float to the top of the filtering shell to block the liquid inlet pipe, and the normal circulation of liquid medicine is ensured.

In some embodiments, the top of lower casing is fixed with hollow external screw thread post, be equipped with the internal screw thread in the hollow cylinder, hollow screw thread post threaded connection is in the hollow cylinder adopts the connected mode of screw thread, installs simply and swiftly.

In some embodiments, the hollow cylinder is integrally formed with the lower housing.

In some embodiments, the hollow cylinder is integrally formed with the hollow cone.

In some embodiments, be provided with the sealing washer between the inner wall of filtration casing with the outer wall of filter membrane, the filter membrane passes through the deformation transition adaptation of sealing washer and is in the filtration casing, improve the seal strength between filter membrane and the sealing washer, make the liquid medicine discharge after filtering through the filtration district, stabilize the position of filter membrane through the frictional force between sealing washer and the filtration casing simultaneously, avoid the filter membrane to produce the slip.

The beneficial effects of the utility model are as follows:

1. in normal infusion process, float the lamella and float on the liquid medicine, make and float between lamella and the filter membrane and produce the space that supplies the liquid medicine to circulate, the liquid medicine flows into the liquid medicine circulation space through the hollow district of the lamella that floats in, flow out from the filtration district of filter membrane again, the filtration district filters the liquid medicine, thereby remain the filtration function of transfusion system, when the liquid medicine infusion finishes, it is sunken until attaching on the filter membrane along with the liquid level to float the lamella, the solid district shutoff of filter membrane floats lamella hollow district, float lamella solid district shutoff filter zone, thereby block the switch on of filtering shell, make the lamella that floats closely on the filter membrane by the negative pressure simultaneously, improve seal strength, make infusion terminate, prevent that air from entering human blood vessel, in order to ensure patient's life safety under special circumstances.

2. The filter membrane is in through the deformation transition adaptation of sealing washer in the filter housing, improves the seal strength between filter membrane and the sealing washer, makes the liquid medicine discharge after filtering through the filtration district, and the position of filter membrane is stabilized through the frictional force between sealing washer and the filter housing simultaneously, avoids the filter membrane to produce the slip.

Drawings

FIG. 1 is a schematic view showing the internal structure of a safety liquid medicine filter for an infusion apparatus according to the present utility model;

FIG. 2 is a schematic diagram showing the structure of a filter membrane in a liquid medicine filter for a safe infusion apparatus according to the present utility model;

FIG. 3 is a schematic view showing the structure of a float valve in a liquid medicine filter for a safe infusion apparatus according to the present utility model;

in the figure, a 1-filtering shell, a 2-filtering membrane, a 3-filtering membrane solid area, a 4-filtering area, a 5-floating valve, a 6-floating valve hollow area, a 7-floating valve solid area, an 8-filtering hole, a 9-upper shell, a 10-lower shell, a 11-liquid inlet pipe, a 12-liquid outlet pipe, a 13-hollow cylinder, a 14-hollow cone, a 15-hollow external thread cylinder and a 16-sealing ring.

Detailed Description

The technical solution of the present utility model will be described in further detail with reference to the accompanying drawings, but the scope of the present utility model is not limited to the following description.

As shown in fig. 1 to 3, a safe liquid medicine filter for transfusion device comprises a transfusion tube and a filtering shell 1 connected to the transfusion tube, wherein the liquid medicine of a medicine bottle flows into a blood vessel of a human body through the filtering shell 1 and then a puncture needle, a filter membrane 2 is arranged in the filtering shell 1, a filter membrane solid region 3 is arranged on the filter membrane 2, a region outside the filter membrane solid region 3 is a filter region 4, a floating valve 5 is arranged above the filter membrane 2, the floating valve 5 moves close to or far away from the filter membrane 2, a floating valve hollow region 6 is arranged at a position of the floating valve 5 corresponding to the filter membrane solid region 3, the region outside the floating valve hollow region 6 of the floating valve 5 is a floating valve solid region 7, the size of the floating valve hollow region 6 is equal to or smaller than that of the filter membrane solid region 3, in the normal transfusion process, the floating valve 5 floats on the liquid medicine to enable a space for flowing the liquid medicine to be generated between the floating valve 5 and the filter membrane 2, the liquid medicine flows into the liquid medicine flowing space through the floating valve hollow area 6 of the floating valve 5 and flows out of the filter area 4 of the filter membrane 2, the filter area 4 filters the liquid medicine, so that the filtering function of the transfusion device is reserved, when the transfusion of the liquid medicine is finished, the floating valve 5 sinks along with the liquid level until the liquid medicine is attached to the filter membrane 2, the filter membrane solid area 3 seals the floating valve hollow area 6, the floating valve solid area 7 seals the filter area 4, so that the conduction of the filter shell 1 is blocked, meanwhile, the floating valve 5 is tightly attached to the filter membrane 2 by means of negative pressure, the sealing strength is improved, the transfusion is stopped, and air is prevented from entering a human blood vessel, so that the life safety of a patient under special conditions is ensured; preferably, the floating valve hollow region 6 is arranged concentrically with the floating valve 5, the filter membrane solid region 3 is arranged concentrically with the filter membrane 2, and the filter membrane 2 is arranged concentrically with the floating valve 5. The filtering area 4 is provided with a plurality of filtering holes 8, so that the filter membrane 2 can filter the liquid medicine, and the original filtering function of the infusion apparatus is reserved.

In some embodiments, as shown in fig. 1, the filtering shell 1 includes an upper shell 9 and a lower shell 10, the upper shell 9 is detachably connected to the top of the lower shell 10, the filtering shell 1 adopts a split structure, so that the installation of the filter membrane 2 and the floating valve 5 is facilitated, the manufacturing difficulty of the liquid medicine filter is reduced, the top of the upper shell 9 is communicated with a liquid inlet pipe 11, the bottom of the lower shell 10 is communicated with a liquid outlet pipe 12, the liquid medicine flows into the filtering shell 1 through the liquid inlet pipe 11, and flows out of the liquid outlet pipe 12 after being filtered by the filter membrane 2.

Further, the top of the lower shell 10 is fixed with a hollow external thread column 15, an internal thread is arranged in the hollow column 13, the hollow thread column 15 is in threaded connection with the hollow column 13, and the installation is simple and quick by adopting a threaded connection mode; in particular, the hollow threaded post 15 has an inner diameter equal to the inner diameter of the lower housing 10.

In some embodiments, as shown in fig. 1, the upper casing 9 includes a hollow cylinder 13 and a hollow cone 14, the hollow cylinder 13 is fixedly connected with a large diameter end of the hollow cone 14, the liquid inlet pipe 11 is connected with a small diameter end of the hollow cone 14, and the outer diameter of the floating valve 5 is adapted to the inner diameter of the lower casing 10, so that the hollow cone 14 can block the floating valve 5, and the floating valve 5 cannot float to the top of the filtering casing 1 to block the liquid inlet pipe 11, thereby ensuring the normal circulation of liquid medicine.

Further, the hollow cylinder 13 is integrally formed with the lower housing 10, and the hollow cylinder 13 and the hollow cone 14 are integrally formed, so that the injection molding is facilitated by adopting an integral structure.

In some embodiments, referring to fig. 1, a sealing ring 16 is disposed between an inner wall of the filter housing 1 and an outer wall of the filter membrane 2, the filter membrane 2 is transitionally adapted in the filter housing 1 through deformation of the sealing ring 16, so that sealing strength between the filter membrane 2 and the sealing ring 16 is improved, the liquid medicine is filtered by the filter region 4 and then discharged, and meanwhile, the position of the filter membrane 2 is stabilized through friction between the sealing ring 16 and the filter housing 1, so that sliding of the filter membrane 2 is avoided.

In the description of the present utility model, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "other end," "upper," "one side," "top," "inner," "front," "center," "two ends," etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model; and those of ordinary skill in the art will appreciate that the benefits achieved by the present utility model are merely better than those achieved by the current embodiments of the prior art in certain circumstances and are not intended to be the most excellent uses directly in the industry.

The foregoing is merely a preferred embodiment of the utility model, and it is to be understood that the utility model is not limited to the form disclosed herein but is not to be construed as excluding other embodiments, but is capable of numerous other combinations, modifications and environments and is capable of modifications within the scope of the inventive concept, either as taught or as a matter of routine skill or knowledge in the relevant art. And that modifications and variations which do not depart from the spirit and scope of the utility model are intended to be within the scope of the appended claims.

Claims

1. The utility model provides a safe transfusion system liquid medicine filter, includes the transfer line, its characterized in that still includes filtration casing (1) that links into the transfer line, be provided with filter membrane (2) in filtration casing (1), be equipped with filter membrane solid district (3) on filter membrane (2), filter membrane (2) are in the region outside filter membrane solid district (3) is filtration district (4), the top of filter membrane (2) is provided with float flap (5), float flap (5) are close to or keep away from filter membrane (2) remove, the position that float flap (5) correspond filter membrane solid district (3) is equipped with float flap hollow district (6), float flap (5) are in the region outside float flap hollow district (6) is float flap solid district (7), the size of float flap hollow district (6) is equal to or less than the size of filter membrane solid district (3).

2. A safety infusion set medical fluid filter according to claim 1, characterized in that the filter zone (4) is provided with a number of filter holes (8).

3. A safe infusion set medical fluid filter according to claim 1, wherein the filter housing (1) comprises an upper housing (9) and a lower housing (10), the upper housing (9) is detachably connected to the top of the lower housing (10), a liquid inlet pipe (11) is communicated with the top of the upper housing (9), and a liquid outlet pipe (12) is communicated with the bottom of the lower housing (10).

4. A safety infusion set medical fluid filter according to claim 3, wherein the upper housing (9) comprises a hollow cylinder (13) and a hollow cone (14), the hollow cylinder (13) is fixedly connected with the large diameter end of the hollow cone (14), and the fluid inlet tube (11) is connected with the small diameter end of the hollow cone (14).

5. The safe infusion set medical fluid filter according to claim 4, wherein a hollow external thread column (15) is fixed at the top of the lower shell (10), internal threads are arranged in the hollow column (13), and the hollow external thread column (15) is in threaded connection with the hollow column (13).

6. A safety infusion set medical fluid filter according to claim 5, wherein said hollow cylinder (13) is made integral with said lower housing (10).

7. A safety infusion set medical fluid filter according to claim 4, wherein said hollow cylinder (13) is made integral with said hollow cone (14).

8. The safe infusion set liquid medicine filter according to claim 1, wherein a sealing ring (16) is arranged between the inner wall of the filter housing (1) and the outer wall of the filter membrane (2), and the filter membrane (2) is in transition fit in the filter housing (1) through deformation of the sealing ring (16).