CN216456358U

CN216456358U - Medical liquid medicine filter

Info

Publication number: CN216456358U
Application number: CN202120077030.8U
Authority: CN
Inventors: 杨以挺; 林彬; 许益鹏
Original assignee: Zhejiang Xinna Medical Device Technology Co ltd
Current assignee: Zhejiang Xinna Medical Device Technology Co ltd
Priority date: 2021-01-12
Filing date: 2021-01-12
Publication date: 2022-05-10
Anticipated expiration: 2031-01-12

Abstract

The utility model provides a medical liquid medicine filter, and belongs to the technical field of machinery. It has solved the inconvenient and poor stability problem of current liquid medicine filter equipment. This medical liquid medicine filter is including being circular and having the casing of inner chamber, be equipped with the filtration membrane that divide into the inner chamber feed liquor chamber and play sap cavity in the casing, it is equipped with the through-hole to lie in feed liquor chamber one side on the casing, lie in through-hole outside orifice department on the casing and still seted up the annular, be equipped with the water-blocking film in the annular, it is sealed that the annular is internal still to be fixed with circumference between end cover and the annular inside wall, the end cover inboard supports presses and forms spacingly on the water-blocking film, the gas pocket has been seted up on the end cover. The end cover of the medical liquid medicine filter can be abutted against the water blocking film, one side of the water blocking film is abutted against the other side of the groove bottom of the annular groove and is abutted against the end cover, the water blocking film is arranged between the groove bottom of the annular groove and the end cover in a clamping mode, and the stability of the water blocking film fixed on the shell is improved.

Description

Medical liquid medicine filter

Technical Field

The utility model belongs to the technical field of filters, relates to a filter, and particularly relates to a medical liquid medicine filter.

Background

The infusion is a large dose of injection which is dropped into a human body from a vein, directly enters the blood circulation of the human body, and is an important means for preventing and treating diseases. The typical infusion process is that the liquid medicine in the infusion bottle enters the channels of the human body through a Marvin tube, a control clamp and a liquid medicine filter. The liquid medicine filter is used for preventing pollutants such as particles in the liquid medicine and air from entering a human body.

The liquid medicine filter in the prior art mainly has the following problems: 1. the liquid outlet cavity is easy to accumulate bubbles, and if the bubbles cannot be discharged in time, the bubbles may enter the body of a patient to cause medical accidents; 2. the leakage fault of the breathable water-blocking film is easy to occur, and if the leakage fault cannot be found or eliminated in time, germs can invade the infusion system to infect patients; 3. the high leakage probability of the water-blocking film also causes the abandonment of the infusion apparatus and the waste of the liquid medicine; 4. the secondary exhaust is not easy to carry out, gas is accumulated in the system, the filtering speed is reduced, and the transfusion cannot be carried out. And current water blocking film often all fixes in liquid medicine filter through pasting, needs install before liquid medicine filter's casing assembly, and the fixed mode stability of viscose is relatively poor, takes place to become flexible very easily, and water blocking film often all installs in a recess in addition, and narrow and small installation hole site need paste again, and it is difficult to do the operation to put into effect, so solve the above-mentioned problem that exists and be the thing that will not deal with at present.

Disclosure of Invention

The utility model aims to solve the problems in the prior art and provides a medical liquid medicine filter. It solves the technical problems of inconvenient assembly and poor stability of the existing liquid medicine filter.

The purpose of the utility model can be realized by the following technical scheme:

the utility model provides a medical liquid medicine filter, is including being circular and having the casing of inner chamber, be equipped with the filtration membrane that divide into feed liquor chamber and play sap cavity with the inner chamber in the casing, its characterized in that, it is equipped with the through-hole to lie in feed liquor chamber one side on the casing, lie in through-hole outside aperture department on the casing and still seted up the annular, be equipped with the water blocking film in the annular, it is sealed that circumference is fixed with between end cover and the annular inside wall in the annular still, the end cover inboard supports presses and forms spacingly on the water blocking film, the gas pocket has been seted up on the end cover.

The through-hole has been seted up on the casing of feed liquor chamber one side of this filter, the effect of through-hole is used for the exhaust with external intercommunication, it is greater than the annular of through-hole still to be equipped with the diameter in the pore department of through-hole outside on the casing, the effect of seting up of this annular is used for placing the water-blocking film, because the annular diameter is greater than the through-hole, so the water-blocking film can support the tank bottom that leans on the annular, the annular inboard still is fixed with the end cover, the end cover can seal the annular groove, and the gas pocket has been seted up on the end cover, can discharge the gas that passes through from through-hole department, the main effect of end cover lies in can supporting and press on the water-blocking film, water-blocking film one side supports and leans on the support that the tank bottom department opposite side of annular receives the end cover to press, set up like this and make the water-blocking film be equivalent to the card establish between annular tank bottom and end cover, the design has improved the stability that the water-blocking film fixes on the casing.

And the water-blocking film of this product can directly put into the annular with the water-blocking film and then fix water-blocking film and casing through embedding the annular with the end cover in, such mounting means fixes water-blocking film and its installation portability has obtained promotion by a wide margin than the mode of pasting water-blocking film in narrow and small space with glue.

In the medical liquid medicine filter, the outer edge of the end cover is provided with an annular bulge protruding towards the water-blocking film, and the annular bulge abuts against the outer edge of the water-blocking film to form a limit.

The annular protrusion is abutted on the water blocking film, and is larger in abutting force strength than the end cover which is directly abutted on the water blocking film, the water blocking film can be better fixed, the larger the abutting force strength is, the higher the sealing strength between the end cover and the ring groove is, the fixing strength between the water blocking film and the shell is further improved, and the circumferential sealing strength between the end cover and the ring groove is also improved.

In the medical liquid medicine filter, an annular convex rib is further arranged on one side, located on the water blocking film, of the end cover, and the convex rib abuts against the water blocking film and presses the water blocking film against the bottom of the annular groove.

The convex rib is located annular protruding inboard, and the effect that the convex rib played all supports to press the effect that is used for fixed water-blocking film on water-blocking film with annular protruding the same, sets up further improvement like this and has blocked the stability of fixing between water-blocking film and the casing. The annular bulge is pressed on the water blocking film, and the convex rib is pressed on the water blocking film, so that the stability of the water blocking film fixed with the shell is improved due to double pressing, and the sealing strength between the end cover and the groove wall of the annular groove is further improved due to double pressing.

In the medical liquid medicine filter, the end cap is connected to the inner side of the ring groove through threads.

The end cover is fixedly connected with the annular groove through the threads, the design has the advantages that the water blocking film can be firmly jacked through screwing the threads, the fixing strength between the water blocking film and the shell is further improved, the stability is better, the screwing tightness between the end cover and the annular groove side wall is better, the threaded connection is simple in fixing mode structure, and the assembly and the disassembly are convenient.

In the medical liquid medicine filter, the air passing hole is located at the center of the end cover and is in a straight shape.

The shape of the air passing hole is in a straight line shape, and the design function of the air passing hole has two points: one is that the air passing hole has the original function of passing air, and if liquid flows into the liquid inlet cavity and is provided with air, the liquid can be discharged from the air passing hole through the through hole and the water blocking film, so that the structure is simple, and the liquid filtering device is convenient and practical; the end cover is used for installation, the end cover is fixedly connected with the annular groove through threads, the end cover needs to be screwed into the annular groove, the end cover is round and smooth in appearance and is not easy to screw, and the linear air passing hole can enable a tool matched with the linear air passing hole to be clamped and screwed, so that the end cover is greatly convenient to install.

Compared with the prior art, the product has the advantages that:

1. the end cover mainly has the advantages that the end cover can be abutted against the water blocking film, one side of the water blocking film is abutted against the other side of the groove bottom of the annular groove and is abutted against the end cover, the water blocking film is arranged between the groove bottom of the annular groove and the end cover, and the stability of the water blocking film fixed on the shell is improved.

2. The end cover is fixedly connected with the annular groove through the threads, the design has the advantages that the water blocking film can be firmly jacked through screwing the threads, the fixing strength between the water blocking film and the shell is further improved, the stability is better, the screwing tightness between the end cover and the annular groove side wall is better, the threaded connection is simple in fixing mode structure, and the assembly and the disassembly are convenient.

3. The annular bulge is pressed on the water blocking film, and the convex rib is pressed on the water blocking film, so that the stability of the water blocking film fixed with the shell is improved due to double pressing, and the sealing strength between the end cover and the groove wall of the annular groove is further improved due to double pressing.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a half sectional view of the present invention;

fig. 3 is an enlarged view of the present invention at fig. two a.

In the figure, 1, a housing; 11. a liquid inlet cavity; 12. a liquid outlet cavity; 13. a through hole; 14. a ring groove; 2. a filtration membrane; 3. a water-resistant film; 4. an end cap; 41. air passing holes; 42. an annular projection; 43. and (5) convex ribs.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1-3, the medical liquid filter includes a circular housing 1 having an inner cavity, the housing 1 includes an upper cavity and a lower cavity, a filtering membrane 2 is sandwiched between the upper cavity and the lower cavity, a liquid inlet cavity 11 is formed between the upper cavity and the filtering membrane 2, and a liquid outlet cavity 12 is formed between the lower cavity and the filtering membrane 2. A connecting end communicated with the liquid inlet cavity 11 and used for connecting a pipeline is arranged above the shell 1 at the liquid inlet cavity 11, and a connecting end communicated with the liquid outlet cavity 12 and used for connecting a pipeline is also arranged below the shell 1 at the liquid outlet cavity 12. Go up and seted up through-hole 13 on the cavity, lie in through-hole 13 outside orifice department on casing 1 and still set up the annular 14 that the diameter is greater than through-hole 13, be equipped with in the annular 14 and hinder water film 3 that the diameter is slightly littleer than annular 14 diameter, go back threaded connection in the annular 14 and have end cover 4, threaded connection makes circumference sealed between end cover 4 and the annular 14 inside wall, and end cover 4 inboard supports to press and forms spacingly on hindering water film 3, has seted up air passing hole 41 on the end cover 4.

A through hole 13 is arranged on the shell 1 at one side of a liquid inlet cavity 11 of the filter, the through hole 13 is communicated with the outside for exhausting, a ring groove 14 with the diameter larger than that of the through hole 13 is also arranged at the hole position outside the through hole 13 on the shell 1, the function of the ring groove 14 is to place the water-resisting film 3, because the diameter of the ring groove 14 is larger than that of the through hole 13, therefore, the water-resisting film 3 can be abutted against the groove bottom of the ring groove 14, the end cover 4 is fixed on the inner side of the ring groove 14, the ring groove 14 can be sealed by the end cover 4, the end cover 4 is provided with the air passing hole 41 which can discharge the air passing through the through hole 13, the end cover 4 mainly has the function of pressing against the water blocking film 3, one side of the water blocking film 3 is pressed against the other side of the groove bottom of the ring groove 14 and is pressed by the end cover 4, the arrangement enables the water blocking film 3 to be clamped between the groove bottom of the annular groove 14 and the end cover 4, and the design improves the stability of the water blocking film 3 fixed on the shell 1.

The end cap 4 is screwed inside the ring groove 14. The end cover 4 is fixed with the annular groove 14 in a threaded connection mode, the design has the advantages that the water blocking film 3 can be firmly jacked by screwing the threads, the fixing strength between the water blocking film 3 and the shell 1 is further improved, the stability is better, the screwing-more tightness between the end cover 4 and the side wall of the annular groove 14 is better, the threaded connection fixing mode is simple in structure, and the assembly and the disassembly are convenient. The shape of the air passing hole 41 is in a straight line shape, and the design function of the air passing hole 41 is two points: one is that the air passing hole 41 has the original function of passing air, and if liquid flows into the liquid inlet cavity 11 and is provided with air, the liquid can be discharged from the air passing hole 41 through the through hole 13 and the water blocking film 3, so that the structure is simple, and the device is convenient and practical; the second is used for installation, because the end cover 4 is fixedly connected with the annular groove 14 through threads, the end cover 4 needs to be screwed into the annular groove 14, the end cover 4 is round and smooth and is not easy to screw, and the linear air passing hole 41 can be used for enabling a tool matched with the linear air passing hole to be clamped and then screwed, so that the installation of the end cover 4 is greatly facilitated. The water-blocking film 3 of this product can directly put into annular groove 14 with water-blocking film 3 and then through fixing water-blocking film 3 and casing 1 in annular groove 14 with end cover 4 threaded connection, such mounting means is than fixing water-blocking film 3 with glue the mode of pasting water-blocking film 3 in narrow and small space and its installation portability has obtained promotion by a wide margin.

The outer edge of the end cover 4 is provided with an annular bulge 42 which is convex towards the direction of the water-resistant film 3, and the annular bulge 42 is pressed against the outer edge of the water-resistant film 3 to form a limit position. The annular protrusion 42 is abutted on the water blocking film 3, and compared with the condition that the end cover 4 is directly abutted on the water blocking film 3, the abutting force is larger, the water blocking film 3 can be better fixed, and the larger the abutting force is, the higher the sealing strength between the end cover 4 and the annular groove 14 is, so that the fixing strength between the water blocking film 3 and the shell 1 is further improved, and the circumferential sealing strength between the end cover 4 and the annular groove 14 is also improved. The end cover 4 is also provided with an annular convex rib 43 at one side of the water blocking film 3, the diameter of the convex rib 43 is slightly larger than that of the through hole 13, and the height of the convex rib 43 is the same as that of the annular convex 42. The convex rib 43 is located on the inner side of the annular protrusion 42, and the convex rib 43 has the same function as the annular protrusion 42 in pressing against the water blocking film 3 for fixing the water blocking film 3, so that the stability of fixation between the water blocking film 3 and the shell 1 is further improved. The annular bulge 42 is pressed against the water-blocking film 3, and the convex rib 43 is pressed against the water-blocking film 3, so that the stability of fixation between the water-blocking film 3 and the shell 1 is improved due to double pressing, and the sealing strength between the end cover 4 and the groove wall of the annular groove 14 is further improved due to double pressing.

The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.

Claims

1. The utility model provides a medical liquid medicine filter, is including being circular and casing (1) that has the inner chamber, be equipped with in casing (1) and divide into filter membrane (2) of feed liquor chamber (11) and play liquid chamber (12) with the inner chamber, a serial communication port, it is equipped with through-hole (13) to lie in feed liquor chamber (11) one side on casing (1), it still offers annular (14) to lie in through-hole (13) outside orifice department on casing (1), annular (14) inboard is equipped with water blocking film (3), still be fixed with circumference between end cover (4) and annular (14) inside wall in annular (14) and seal, end cover (4) inboard is supported and is pressed and form spacingly on water blocking film (3), air pocket (41) have been seted up on end cover (4).

2. The medical liquid filter according to claim 1, wherein the outer edge of the end cap (4) is provided with an annular protrusion (42) protruding toward the water-blocking film (3), and the annular protrusion (42) is pressed against the outer edge of the water-blocking film (3) to form a limit.

3. The medical liquid filter according to claim 2, wherein the end cap (4) is further provided with a ring-shaped rib (43) at a side of the water-resistant film (3), and the rib (43) abuts against the water-resistant film (3) and presses the water-resistant film (3) against the bottom of the groove (14).

4. A medical fluid filter according to any of claims 1-3, wherein the end cap (4) is screwed inside the ring groove (14).

5. The medical liquid filter according to claim 4, wherein the air passing hole (41) is located at the center of the end cap (4) and has a straight shape.