CN111973844A - Medical double-reflux filter for infusion apparatus - Google Patents
Medical double-reflux filter for infusion apparatus Download PDFInfo
- Publication number
- CN111973844A CN111973844A CN201910437684.4A CN201910437684A CN111973844A CN 111973844 A CN111973844 A CN 111973844A CN 201910437684 A CN201910437684 A CN 201910437684A CN 111973844 A CN111973844 A CN 111973844A
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- China
- Prior art keywords
- filter membrane
- filter
- liquid
- ring
- positioning ring
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/36—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests with means for eliminating or preventing injection or infusion of air into body
- A61M5/38—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests with means for eliminating or preventing injection or infusion of air into body using hydrophilic or hydrophobic filters
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/165—Filtering accessories, e.g. blood filters, filters for infusion liquids
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/165—Filtering accessories, e.g. blood filters, filters for infusion liquids
- A61M2005/1657—Filter with membrane, e.g. membrane, flat sheet type infusion filter
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- Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Emergency Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention discloses a medical double-reflux filter for an infusion apparatus, and relates to the technical field of infusion apparatuses. The filter membrane fixing device comprises a lower shell, an upper cover body and a filter membrane body, wherein one surface of the upper cover body is fixedly connected with one surface of the lower shell, a cushion block is fixed on the inner wall of the lower shell, a liquid through hole is formed in the cushion block, a through hole is formed in the inner wall of the cushion block and is communicated with the liquid through hole, a filter membrane fixing ring is fixed on one surface of the cushion block, and a lower positioning ring is fixed on one surface of the filter membrane fixing ring. According to the invention, liquid is conveyed to the front side of the filter membrane body through the liquid inlet pipe, the down-flow channel and the liquid inlet, the liquid moves from bottom to top, gas in the filter is discharged through the exhaust head, so that bubbles on the front side of the filter membrane body are completely removed, the liquid permeates into the back side of the filter membrane body after being filtered by the filter membrane body, the liquid medicine moves from bottom to top, and the bubbles on the back side of the filter membrane can be expelled through the pushing of the liquid, so that the problem of bubble residue in the filter is solved.
Description
Technical Field
The invention belongs to the technical field of infusion sets, and particularly relates to a medical double-reflux filter for an infusion set.
Background
At present, the infusion apparatus clinically used in hospitals mainly has the following problems in the aspect of intravenous infusion:
1. aiming at the common filtering infusion set, the filter pore size of the infusion set is larger and is in the range of 15-20um, and the particles smaller than 15um all enter the blood vessel of a patient and can not block bubbles.
2. At present the aperture of accurate transfusion system is between 1.2um, 3um and 5um, has played fine holding back to the particle of clinical infusion, nevertheless through clinical discovery, a lot of transfusion system are beginning to operate to the puncture completion, in the middle of the infusion process, still have the bubble to remain, along with continuous infusion, the bubble can get into the blood vessel, can cause patient's secondary injury.
3. The residual position of bubble mainly embodies at the position of wanting liquid filter, the liquid medicine passes through the pipeline and gets into the filter, moist filtration membrane, pass through filtration membrane, the infiltration filtration membrane back, then get into patient's blood vessel through the pipeline, filtration membrane is in dry time, the air can be got rid of, but when the filtration membrane is moist back, liquid passes through and gas is not enough, produce the air blocking and influence the flow, because the filtration membrane is at moist in-process, the moist direction position of membrane is indefinite, it is indefinite to have caused the liquid medicine position that the filtration membrane back oozes past, the bubble receives the liquid separation, it is difficult to discharge the bubble, the patient is when the activity, the bubble is along with liquid flow, get into patient's blood vessel, can produce the adverse reaction, can.
Disclosure of Invention
The invention aims to provide a medical double-reflux filter for an infusion apparatus, which is characterized in that liquid is delivered to the front surface of a filter membrane body through a liquid inlet pipe, a down-flow channel and a liquid inlet, the liquid moves from bottom to top, gas in the filter is discharged through an exhaust head, so that bubbles on the front surface of the filter membrane body are completely removed, the liquid permeates into the back surface of the filter membrane body after being filtered by the filter membrane body, liquid medicine moves from bottom to top, and the bubbles on the back surface of the filter membrane can be removed by pushing the liquid, so that the problem of bubble residue in the filter is.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to a medical double-reflux filter for an infusion apparatus, which comprises a lower shell, an upper cover body and a filter membrane body, wherein one surface of the upper cover body is fixedly connected with one surface of the lower shell;
a cushion block is fixed on the inner wall of the lower shell, a liquid through port is formed in the cushion block, a through hole is formed in the inner wall of the cushion block and is communicated with the liquid through port, a filter membrane fixing ring is fixed on one surface of the cushion block, a lower positioning ring is fixed on one surface of the filter membrane fixing ring, and an opening is formed in the peripheral side surface of the lower positioning ring;
An upper positioning ring is fixed on one surface of the upper cover body, the upper positioning ring is opposite to the lower positioning ring in position, a film pressing ring is fixed on the inner wall of the upper positioning ring, the film pressing ring is opposite to the filter film fixing ring in position, a plurality of liquid inlets are formed in the peripheral side surfaces of the upper positioning ring and the film pressing ring, and the liquid inlets are opposite to the openings in position;
the filter membrane body is arranged between the membrane pressing ring and the filter membrane fixing ring;
an exhaust head penetrates through one surface of the upper cover body and is made of waterproof and breathable materials.
Furthermore, the filter membrane body is of an annular structure, and the outer diameter of the filter membrane body is the same as the inner diameter of the lower positioning ring.
Furthermore, the sum of the heights of the upper positioning ring and the lower positioning ring is the same as the height of the inner cavity of the lower shell, and the sum of the heights of the membrane pressing ring, the membrane filtering body and the membrane filtering fixing ring is the same as the height of the inner cavity of the lower shell.
Furthermore, a down-flow channel is formed among the cushion block, the filter membrane fixing ring, the lower positioning ring, the upper positioning ring and the side wall of the lower shell, a liquid inlet pipe penetrates through and is fixed on the peripheral side face of the lower shell, and the liquid inlet pipe is communicated with the down-flow channel.
Furthermore, a liquid outlet pipe penetrates through and is fixed to the peripheral side face of the lower shell, one end of the liquid outlet pipe is fixedly connected with the peripheral side face of the cushion block, and the liquid outlet pipe is communicated with the liquid through port.
Furthermore, a plurality of filter membrane supporting bulges are fixed on one surface of the cushion block, and the heights of the filter membrane supporting bulges are the same as those of the filter membrane fixing ring.
Further, the exhaust head is made by compounding a polytetrafluoroethylene microporous membrane and a polyester non-woven fabric.
The invention has the following beneficial effects:
the liquid is conveyed to the front side of the filter membrane body through the liquid inlet pipe, the down-flow channel and the liquid inlet, the liquid moves from bottom to top due to gravity transfusion, gas in the filter is discharged through the exhaust head, bubbles on the front side of the filter membrane body are completely removed, the problems of air blockage and flow reduction caused by the existence of the bubbles are solved, the liquid permeates into the back side of the filter membrane body after being filtered by the filter membrane body, liquid medicine moves from bottom to top, the bubbles on the back side of the filter membrane can be removed through pushing of the liquid, the filtered liquid can be discharged through the through hole, the liquid through hole and the liquid outlet pipe, the problem that the bubbles are remained in the filter is solved, and the body health of a patient is.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of the medical dual reflux filter for infusion set of the present invention;
FIG. 2 is an exploded view of the structure of FIG. 1;
FIG. 3 is a schematic top view of the structure of FIG. 2;
FIG. 4 is a cross-sectional view of the structure at A-A in FIG. 3;
FIG. 5 is an enlarged view of a portion of FIG. 4 at A;
FIG. 6 is a schematic structural view of the lower housing;
FIG. 7 is a schematic structural view of the upper cover;
in the drawings, the components represented by the respective reference numerals are listed below:
1-lower shell, 2-upper cover body, 3-filter membrane body, 101-cushion block, 102-liquid through port, 103-through hole, 104-filter membrane fixing ring, 105-lower positioning ring, 106-opening, 107-lower flow channel, 108-liquid inlet pipe, 109-liquid outlet pipe, 110-filter membrane supporting protrusion, 201-upper positioning ring, 202-membrane pressing ring, 203-liquid inlet, 204-exhaust head.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-7, the present invention provides a medical dual reverse flow filter for an infusion apparatus, which comprises a lower casing 1, an upper cover 2 and a filter membrane body 3, wherein one surface of the upper cover 2 is fixedly connected with one surface of the lower casing 1;
a cushion block 101 is fixed on one inner wall of the lower shell 1, a liquid through port 102 is formed in the cushion block 101, a through hole 103 is formed in one inner wall of the cushion block 101, the through hole 103 is communicated with the liquid through port 102, a filter membrane fixing ring 104 is fixed on one surface of the cushion block 101, a lower positioning ring 105 is fixed on one surface of the filter membrane fixing ring 104, and an opening 106 is formed in the peripheral side surface of the lower positioning ring 105;
an upper positioning ring 201 is fixed on one surface of the upper cover body 2, the upper positioning ring 201 is opposite to the lower positioning ring 105 in position, a film pressing ring 202 is fixed on the inner wall of the upper positioning ring 201, the film pressing ring 202 is opposite to the filter membrane fixing ring 104 in position, a plurality of liquid inlets 203 are formed in the peripheral sides of the upper positioning ring 201 and the film pressing ring 202, and the liquid inlets 203 are opposite to the openings 106 in position;
the filter membrane body 3 is arranged between the membrane pressing ring 202 and the filter membrane fixing ring 104;
an exhaust head 204 penetrates through one surface of the upper cover body 2, and the exhaust head 204 is made of a waterproof and breathable material.
As shown in FIG. 5, the filter membrane body 3 is a ring structure, and the outer diameter of the filter membrane body 3 is the same as the inner diameter of the lower positioning ring 105.
As shown in FIGS. 4-5, the sum of the heights of the upper positioning ring 201 and the lower positioning ring 105 is the same as the height of the inner cavity of the lower casing 1, and the sum of the heights of the membrane pressing ring 202, the membrane filter body 3 and the membrane filter fixing ring 104 is the same as the height of the inner cavity of the lower casing 1.
As shown in fig. 4-6, a down flow channel 107 is formed between the spacer 101, the filter membrane fixing ring 104, the lower positioning ring 105, the upper positioning ring 201 and the side wall of the lower casing 1, a liquid inlet pipe 108 is fixed on the peripheral side surface of the lower casing 1, and the liquid inlet pipe 108 is communicated with the down flow channel 107.
As shown in fig. 4 and 6, a liquid outlet pipe 109 penetrates through the peripheral side surface of the lower casing 1, one end of the liquid outlet pipe 109 is fixedly connected with the peripheral side surface of the pad 101, and the liquid outlet pipe 109 is communicated with the liquid through port 102.
As shown in FIGS. 5 to 6, a plurality of filter membrane supporting protrusions 110 are fixed on one surface of the spacer 101, and the height of the filter membrane supporting protrusions 110 is the same as that of the filter membrane fixing ring 104.
Wherein, the exhaust head 204 is made by compounding a polytetrafluoroethylene microporous membrane and a polyester non-woven fabric.
One specific application of this embodiment is: liquid is discharged into the down flow channel 107 through the liquid inlet pipe 108, the liquid flows downwards along the down flow channel 107, the liquid in the down flow channel 107 flows into the space between the filter membrane body 3 and the upper cover body 2 through the liquid inlet 203, gas can be discharged through the exhaust head 204, the liquid flows to the back of the filter membrane body 3 after being filtered by the filter membrane body 3, the liquid medicine moves from bottom to top, bubbles on the back of the filter membrane body 3 can be expelled through the pushing of the liquid, and the filtered liquid can be discharged through the through hole 103, the liquid through port 102 and the liquid outlet pipe 109.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (7)
1. A medical two palirrhea filters for transfusion system, including casing (1), upper cover body (2) and filter membrane body (3) down, upper cover body (2) a surface and casing (1) a fixed surface connection down, its characterized in that:
A cushion block (101) is fixed on one inner wall of the lower shell (1), a liquid through port (102) is formed in the cushion block (101), a through hole (103) is formed in one inner wall of the cushion block (101), the through hole (103) is communicated with the liquid through port (102), a filter membrane fixing ring (104) is fixed on one surface of the cushion block (101), a lower positioning ring (105) is fixed on one surface of the filter membrane fixing ring (104), and an opening (106) is formed in the peripheral side surface of the lower positioning ring (105);
an upper positioning ring (201) is fixed on one surface of the upper cover body (2), the upper positioning ring (201) is opposite to the lower positioning ring (105), a film pressing ring (202) is fixed on the inner wall of the upper positioning ring (201), the film pressing ring (202) is opposite to the filter film fixing ring (104), a plurality of liquid inlets (203) are formed in the peripheral sides of the upper positioning ring (201) and the film pressing ring (202), and the liquid inlets (203) are opposite to the openings (106);
the filter membrane body (3) is arranged between the membrane pressing ring (202) and the filter membrane fixing ring (104);
an exhaust head (204) penetrates through one surface of the upper cover body (2), and the exhaust head (204) is made of a waterproof and breathable material.
2. The medical double reflux filter for infusion set according to claim 1, wherein the filter membrane body (3) is of an annular structure, and the outer diameter of the filter membrane body (3) is the same as the inner diameter of the lower positioning ring (105).
3. The medical double reflux filter for the infusion set according to claim 1, wherein the sum of the heights of the upper positioning ring (201) and the lower positioning ring (105) is the same as the height of the inner cavity of the lower casing (1), and the sum of the heights of the pressure membrane ring (202), the filter membrane body (3) and the filter membrane fixing ring (104) is the same as the height of the inner cavity of the lower casing (1).
4. The medical dual reflux filter for the infusion set according to claim 1, wherein the cushion block (101), the filter membrane fixing ring (104), the lower positioning ring (105), the upper positioning ring (201) and the side wall of the lower shell (1) form a down flow channel (107), an inlet tube (108) penetrates through the peripheral side surface of the lower shell (1) and is fixed, and the inlet tube (108) is communicated with the down flow channel (107).
5. The medical dual reflux filter for the infusion set according to claim 1, wherein a liquid outlet pipe (109) penetrates through and is fixed on the peripheral side surface of the lower casing (1), one end of the liquid outlet pipe (109) is fixedly connected with the peripheral side surface of the cushion block (101), and the liquid outlet pipe (109) is communicated with the liquid through port (102).
6. The medical dual reflux filter for the infusion set according to claim 1, wherein a plurality of filter membrane supporting protrusions (110) are fixed on one surface of the cushion block (101), and the height of the filter membrane supporting protrusions (110) is the same as that of the filter membrane fixing ring (104).
7. The medical double reflux filter for infusion set according to claim 1, wherein the exhaust head (204) is made of a polytetrafluoroethylene microporous membrane and a polyester non-woven fabric.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910437684.4A CN111973844A (en) | 2019-05-24 | 2019-05-24 | Medical double-reflux filter for infusion apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910437684.4A CN111973844A (en) | 2019-05-24 | 2019-05-24 | Medical double-reflux filter for infusion apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111973844A true CN111973844A (en) | 2020-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910437684.4A Pending CN111973844A (en) | 2019-05-24 | 2019-05-24 | Medical double-reflux filter for infusion apparatus |
Country Status (1)
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| CN (1) | CN111973844A (en) |
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| CN201959341U (en) * | 2011-01-25 | 2011-09-07 | 上海振浦医疗设备有限公司 | Precise liquid medicine filter |
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| CN202219008U (en) * | 2011-09-23 | 2012-05-16 | 浙江润强医疗器械股份有限公司 | Secondary injection molding liquid medicine filter |
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| CN207462404U (en) * | 2017-04-01 | 2018-06-08 | 胡敏 | A kind of medical treatment and nursing liquid medicine filter and liquid infusion apparatus |
| CN108392704A (en) * | 2017-12-15 | 2018-08-14 | 武汉智迅创源科技发展股份有限公司 | A kind of liquid medicine filter for the water conservancy diversion support device of liquid medicine filter and with water conservancy diversion support device |
| CN208785465U (en) * | 2018-03-23 | 2019-04-26 | 徐州一佳医疗器械有限公司 | A kind of medical transfusion accurate filter |
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2019
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| CN2740204Y (en) * | 2004-11-13 | 2005-11-16 | 盛同飞 | Self-air discharge filter |
| US20120022449A1 (en) * | 2009-02-09 | 2012-01-26 | E-Wha Fresenius Kabi Inc. | Filter device and liquid injection apparatus having the same |
| CN201959341U (en) * | 2011-01-25 | 2011-09-07 | 上海振浦医疗设备有限公司 | Precise liquid medicine filter |
| EP2567720A1 (en) * | 2011-09-08 | 2013-03-13 | GVS S.p.A. | Medical infusion filter with optimized filling |
| CN202219008U (en) * | 2011-09-23 | 2012-05-16 | 浙江润强医疗器械股份有限公司 | Secondary injection molding liquid medicine filter |
| CN202376566U (en) * | 2011-10-27 | 2012-08-15 | 李林风 | Multi-effect infusion apparatus for automatically venting and liquid stopping |
| CN102671252A (en) * | 2012-05-25 | 2012-09-19 | 山东新华安得医疗用品有限公司 | Full automatic infusion set |
| CN103566435A (en) * | 2013-11-14 | 2014-02-12 | 台州迈得医疗工业设备股份有限公司 | Process of assembling medical filter |
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| CN108392704A (en) * | 2017-12-15 | 2018-08-14 | 武汉智迅创源科技发展股份有限公司 | A kind of liquid medicine filter for the water conservancy diversion support device of liquid medicine filter and with water conservancy diversion support device |
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Application publication date: 20201124 |