CN106310439A - Air filter and infusion apparatus - Google Patents

Air filter and infusion apparatus Download PDF

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Publication number
CN106310439A
CN106310439A CN201610789092.5A CN201610789092A CN106310439A CN 106310439 A CN106310439 A CN 106310439A CN 201610789092 A CN201610789092 A CN 201610789092A CN 106310439 A CN106310439 A CN 106310439A
Authority
CN
China
Prior art keywords
membrane
shell
gland
air filter
air
Prior art date
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.)
Withdrawn
Application number
CN201610789092.5A
Other languages
Chinese (zh)
Inventor
李文超
潘名辉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shandong Shinva Ande Healthcare Apparatus Co Ltd
Original Assignee
Shandong Shinva Ande Healthcare Apparatus Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shandong Shinva Ande Healthcare Apparatus Co Ltd filed Critical Shandong Shinva Ande Healthcare Apparatus Co Ltd
Priority to CN201610789092.5A priority Critical patent/CN106310439A/en
Publication of CN106310439A publication Critical patent/CN106310439A/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • 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
    • A61M2005/1401—Functional features
    • 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
    • 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
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/75—General characteristics of the apparatus with filters

Landscapes

  • 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)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

The invention belongs to the field of medical instruments and particularly relates to an air filter. The air filter comprises a shell, an air filter membrane and a gland. The air filter membrane is installed in the shell and divides an inner cavity of the shell into two chambers, two openings are formed in the shell and located in the two sides of the air filter membrane respectively, the gland is matched with one opening of the shell, a one-way membrane is fixed in the chamber, away from the gland, of the shell and is made of an elastic material, and the one-way membrane comprises an inner movable diaphragm and an annular membrane body on the periphery of the inner movable diaphragm, wherein the inner movable diaphragm and the annular membrane body are integrally connected. When no external force action exists, the inner movable diaphragm is completely located in the annular membrane body, and the periphery of the inner movable diaphragm is matched with the inner wall of the annular membrane body. The invention further provides an infusion apparatus using the air filter. In the normal infusion process, medicine liquid can be automatically prevented from making contact with the air filter membrane through the one-way membrane as long as the gland is opened before use according to normal operation, so that the medicine liquid filter membrane is effectively prevented from being contaminated by medicine liquid, and the air filter and the infusion apparatus are safe and convenient to use, fast and reliable.

Description

Air filter and transfusion device
Technical field
The present invention relates to air filter and transfusion device, belong to medical instruments field.
Background technology
Venous transfusion is Therapeutic Method widely used in clinical treatment, during medicinal liquid in infusion rigid container, and transfusion Must be equipped with air inlet device on device to realize container inside and outside air pressure balance in infusion process, thus ensure the medicinal liquid in container Normal infusion.There is air-filtering membrane on air inlet device for filtering the air entering medicinal liquid, and stop medicinal liquid to be revealed.But in reality During border uses, owing to medicinal liquid kind is many, complicated component, after air-filtering membrane Long contact time medicinal liquid, easily dirty by medicinal liquid Dye, its breathability can reduce, it is difficult to continues the air pressure inside and outside equalizing reservoir, sometimes there is also container inner pressure and reduces, and then The problem stoping medicinal liquid infusion.
Summary of the invention
The technical problem to be solved in the present invention is: overcome deficiency of the prior art, it is provided that one can be in infusion process In prevent medicinal liquid ingress of air filter membrane, guarantee that liquid medicine filtering membrane will not be provided by the air filter of liquid medicine contamination simultaneously Apply the transfusion device of this air filter.
Air filter of the present invention, including shell, air-filtering membrane and gland, air-filtering membrane is arranged on shell In and shell inner cavity is divided into two chambers, shell has two openings, two openings lay respectively at the both sides of air-filtering membrane, Gland coordinates with an opening of shell, shell away from being fixed with one-way membrane in the chamber of gland, one-way membrane use elastic material (as The flexible high molecular materials such as conventional use of silica gel, latex, polyurethane, rubber), one-way membrane includes the interior movable film integrally connected Sheet and the circular membrane of its periphery；Time without External Force Acting, in interior moving diaphragm is fully located at circular membrane and its periphery and circular membrane Inwall matches.Wherein, gland can use split-type structural, and it includes that housing and buckle closure, buckle closure fasten with the outer end of housing, The inner of housing snaps in shell, and buckle closure can be connected with housing by connecting band；Certainly, gland can also directly use indent The lid of shape, is pressed into the lid of concave shaped in shell.
In actual application, one-way membrane directly contacts with medicinal liquid.When using this air filter, only need to be by normal behaviour Open gland before use.In infusion process, when in medical liquid container, pressure reduces, outside air is from air filtration Passing through in film, (interior moving diaphragm staggers with circular membrane, sky therebetween to promote the interior moving diaphragm on one-way membrane to form passage Gap is passage), outside air enters medical liquid container by this passage, makes medical liquid container external and internal pressure restore balance, then single Setting back to the interior moving diaphragm of film, the passage on one-way membrane disappears, and stops medicinal liquid ingress of air filter membrane, such that it is able to real Now prevent liquid medicine filtering membrane by the function of liquid medicine contamination in infusion process.
Transfusion device of the present invention has a following two scheme:
Scheme one:
Transfusion device includes bottle plug puncture unit, and the side of bottle plug puncture unit has the first connection being connected with air filter End, has, in the first connection end, the cavity that the vent cap with bottle plug puncture unit communicates；Air filter uses above-mentioned air mistake Filter, wherein, shell arranges the second connection end away from one end of gland, has what the inner chamber with shell communicated in the second connection end Cavity, second connects end is connected end connection by flexible pipe with described first.
In this transfusion device, when air filter is assembled on bottle plug puncture unit, one-way membrane is placed in air-filtering membrane with Between bottle plug puncture unit so that it is contact with medicinal liquid.During use, bottle plug puncture unit is inserted in hard medical liquid container, now hard Medicinal liquid in medical liquid container flows in the patient from transfusion device, and hard medical liquid container internal gas pressure reduces, and is formed inside and outside one-way membrane High outside and low outside pressure differential, the interior moving diaphragm on one-way membrane under the effect of ambient pressure to inner side (i.e. towards bottle stopper puncture The side of device) movable, form passage, the outside air after air filtration membrane filtration enters hard medical liquid container by passage, After inside and outside air pressure balance, external force disappears, and the interior moving diaphragm of one-way membrane sets back, and passage disappears, and prevents medicinal liquid ingress of air Filter membrane.
Scheme two:
Transfusion device includes bottle plug puncture unit, and the side of bottle plug puncture unit has the installation end of air filter, installation end Inside having the cavity that the vent cap with bottle plug puncture unit communicates, air filter includes air-filtering membrane, one-way membrane and pressure Covering, air-filtering membrane and one-way membrane are arranged in the cavity of above-mentioned installation end, and one-way membrane is positioned at air-filtering membrane and bottle stopper puncture Between device, gland coordinates with the opening of installation end outer end, and one-way membrane uses elastic material, and one-way membrane includes the interior work integrally connected Dynamic diaphragm and the circular membrane of its periphery；Time without External Force Acting, in interior moving diaphragm is fully located at circular membrane and its periphery and annular The inwall of film matches.Wherein, gland can use split-type structural, and it includes the outer end of housing and buckle closure, buckle closure and housing Fastening, the inner of housing snaps in shell, and buckle closure can be connected with shell by connecting band；Certainly, gland can also directly be adopted With the lid of concave shaped, the lid of concave shaped is pressed in shell.
In this programme, the operation principle process of transfusion device is identical with the transfusion device in scheme one, is all by mutually isostructural One-way membrane plays and prevents air-filtering membrane in infusion process by the effect of liquid medicine contamination, to be intended merely to coordinate different structure form Bottle plug puncture unit, makes slightly changed in structure (owing to the side of bottle plug puncture unit has installation end, therefore can work by installation end For the shell of above-mentioned air filter, during assembling, directly air-filtering membrane, one-way membrane are placed in the cavity of installation end).
In the present invention, the one-way membrane of said structure form can prepare in the following way: has one in resilient one-way membrane Portion has a groove, and the interior moving diaphragm formed during fluting is connected stiff except a bit of with the periphery of one-way membrane (circular membrane) Outward, remainder can swing under the effect of external force, and staggers formation passage with circular membrane.Further, since one-way membrane Be close to air-filtering membrane, therefore under the obstruction of inside air filter membrane can only towards the side shifting away from air-filtering membrane, from And achieve material can only the single effect of (i.e. gland side) inwardly side oscillation outside air filter.
The present invention is compared with prior art had the beneficial effect that
Air filter arrangement advantages of simple in the present invention, during normal infusion, only need to used by normal operating Front opening gland, can prevent medicinal liquid ingress of air filter membrane automatically by one-way membrane, thus effectively prevent liquid medicine filtering membrane quilt Liquid medicine contamination, safe and convenient to use, the most reliably.Meanwhile, the transfusion device applying this air filter also has above-mentioned air mistake The equivalent effect of filter.
Accompanying drawing explanation
Fig. 1 is the structural representation of air filter in the present invention；
Fig. 2 is the structural representation of one-way membrane in the present invention；
Fig. 3 is the structural representation of transfusion device in the embodiment of the present invention 1；
Fig. 4 is the structural representation of transfusion device in the embodiment of the present invention 2；
Fig. 5 is the structural representation of transfusion device in the embodiment of the present invention 3.
In figure: 1, shell；2, one-way membrane；3, air-filtering membrane；4, housing；5, band is connected；6, buckle closure；7, circular membrane；8、 Interior moving diaphragm；9, passage；10, the lid of concave shaped；11, second connects end；12, flexible pipe；13, first connects end；14, bottle stopper Perforator；15, vent cap；16, installation end；17, big arc shank type bottle plug puncture unit.
Detailed description of the invention
Below in conjunction with the accompanying drawings embodiments of the invention are described further:
As shown in Figure 1, 2, air filter of the present invention includes shell 1, air-filtering membrane 3 and gland, air mistake In filter membrane 3 is arranged on shell 1 and shell 1 lumen segmentation is become two chambers, shell 1 has two openings, two openings position respectively In the both sides of air-filtering membrane 3, gland coordinates with an opening of shell 1, and shell 1 is away from being fixed with one-way membrane in the chamber of gland 2, one-way membrane 2 uses the interior moving diaphragm 8 and the circular membrane 7 of its periphery that elastic material, one-way membrane 2 include integrally connecting；Without outward The masterpiece used time, in interior moving diaphragm 8 is fully located at circular membrane 7 and its periphery matches with the inwall of circular membrane 7.Wherein, gland Can use split-type structural, it includes that housing 4 and buckle closure 6, buckle closure 6 fasten with the outer end of housing 4, and the inner of housing 4 snaps in Pushing against air-filtering membrane 3 in shell 1, buckle closure 6 is connected with housing 4 by connecting band 5；Gland can also directly use concave shaped Lid 10, is pressed into the lid 10 of concave shaped in shell 1 and gets final product (Fig. 1 does not embodies this structure)；One-way membrane 2 can pass through limited block Or other structures carry out spacing.One-way membrane 2 prepares in the following ways: has resilient one-way membrane 2 inside by one and has one Groove, during fluting formed interior moving diaphragm 8 except a bit of be connected with the periphery of one-way membrane 2 (circular membrane 7) stiff in addition to, its Remaining part is divided and can be swung under the effect of external force, and with circular membrane 7 stagger formation passage 9.
In actual application, one-way membrane 2 directly contacts with medicinal liquid.When using this air filter, only need to be by normally Buckle closure 6 is opened in operation before use.In infusion process, when in medical liquid container, pressure reduces, outside air is from air Filter membrane 3 passes through, promote the interior moving diaphragm 8 on one-way membrane 2 formed passage 9 (interior moving diaphragm 8 staggers with circular membrane 7, two Space between person is passage 9), outside air enters medical liquid container by this passage 9, makes medical liquid container external and internal pressure recover Balance, then the interior moving diaphragm 8 of one-way membrane 2 sets back, and the passage 9 on one-way membrane 2 disappears, and stops medicinal liquid ingress of air mistake Filter membrane 3, such that it is able to realize preventing liquid medicine filtering membrane by the function of liquid medicine contamination in infusion process.
Transfusion device of the present invention has following 3 kinds of specific embodiments:
Embodiment 1:
As it is shown on figure 3, transfusion device includes that bottle plug puncture unit 14, the side of bottle plug puncture unit 14 have with air filter even The the first connection end 13 connect, has, in the first connection end 13, the cavity that the vent cap 15 with bottle plug puncture unit 14 communicates；Air Filter uses above-mentioned air filter, and wherein, shell 1 arranges the second connection end 11 away from one end of gland, and second connects Having the cavity that the inner chamber with shell 1 communicates in end 11, second connects end 11 is connected end 13 by flexible pipe 12 with described first Connecting, the gland in the present embodiment uses the lid 10 of concave shaped, and the lid 10 of this concave shaped is pressed in shell 1, and by interior The lid 10 of spill pushes against air-filtering membrane 3, and is fixed to by one-way membrane 2 on second connection end 11.
In this transfusion device, when being assembled into by air filter on bottle plug puncture unit 14, one-way membrane 2 is placed in air-filtering membrane Between 3 and bottle plug puncture unit 14 so that it is contact with medicinal liquid.During use, bottle plug puncture unit 14 is inserted in hard medical liquid container, this Time hard medical liquid container in medicinal liquid from transfusion device flow in the patient, hard medical liquid container internal gas pressure reduce, in one-way membrane 2 The pressure differential that outer formation is high outside and low outside, the interior moving diaphragm 8 on one-way membrane 2 under the effect of ambient pressure to inner side (i.e. towards The side of bottle plug puncture unit 14) movable, form passage 9, the outside air after air-filtering membrane 3 filters is entered by passage 9 Hard medical liquid container, after inside and outside air pressure balance, external force disappears, and the interior moving diaphragm 8 of one-way membrane 2 sets back, and passage 9 disappears, Prevent medicinal liquid ingress of air filter membrane 3.
Embodiment 2:
As shown in Figure 4, transfusion device includes that bottle plug puncture unit 14, the side of bottle plug puncture unit 14 have air filter Installation end 16, has the cavity that the vent cap 15 with bottle plug puncture unit 14 communicates in installation end 16, air filter includes Air-filtering membrane 3, one-way membrane 2 and gland, air-filtering membrane 3 and one-way membrane 2 are arranged in the cavity of above-mentioned installation end 16, unidirectional Film 2 is close to both the air-filtering membrane 3 side near bottle plug puncture unit 14, air-filtering membrane 3 and bottle plug puncture unit 14 and is combined, for One-way membrane 2 provides powerful support, and gland coordinates with the opening of installation end 16 outer end, and one-way membrane 2 uses elastic material, one-way membrane 2 include interior moving diaphragm 8 and the circular membrane 7 of its periphery integrally connected；In time without External Force Acting, interior moving diaphragm 8 is fully located at Circular membrane 7 is interior and its periphery matches with the inwall of circular membrane 7.Wherein, gland uses split-type structural, and it includes housing 4 He Buckle closure 6, buckle closure 6 fastens with the outer end of housing 4, and the inner of housing 4 pushes against air-filtering membrane 3 in snapping in shell 1, and by one-way membrane 2 are fixed on bottle plug puncture unit 14；Buckle closure 6 is connected with shell 1 by connecting band 5.
In the present embodiment, the operation principle process of transfusion device is identical with the transfusion device in embodiment 1, is all by identical knot The one-way membrane 2 of structure plays and prevents air-filtering membrane 3 in infusion process by the effect of liquid medicine contamination, to be intended merely to coordinate different structure The bottle plug puncture unit 14 of form, makes slightly changed in structure (owing to the side of bottle plug puncture unit 14 has installation end 16, the most directly Connect installation end 16 as the shell 1 of air filter in embodiment 1, during assembling, directly air-filtering membrane 3, one-way membrane 2 are put In the cavity of installation end 16).
Embodiment 3:
As it is shown in figure 5, the bottle plug puncture unit except using is different, other structures of transfusion device are the most same as in Example 2, this Bottle plug puncture unit in embodiment uses big arc shank type bottle plug puncture unit 17, and the side of big arc shank type bottle plug puncture unit 17 has equally There is the installation end 16 of air filter, there is in installation end 16 cavity that the vent cap 15 with bottle plug puncture unit 14 communicates. Owing to version has essentially no difference, therefore its operation principle process is identical with the transfusion device in embodiment 2, does not remake concrete Illustrate.

Claims (9)

1. an air filter, including shell (1), air-filtering membrane (3) and gland, air-filtering membrane (3) is arranged on shell (1) in and shell (1) lumen segmentation being become two chambers, shell (1) has two openings, two openings lay respectively at air filtration The both sides of film (3), gland coordinates with an opening of shell (1), it is characterised in that: shell (1) is away from fixing in the chamber of gland Having an one-way membrane (2), one-way membrane (2) uses elastic material, one-way membrane (2) include the interior moving diaphragm (8) that integrally connects and its outside The circular membrane (7) in week；Time without External Force Acting, in interior moving diaphragm (8) is fully located at circular membrane (7) and its periphery and circular membrane (7) inwall matches.
Air filter the most according to claim 1, it is characterised in that: described gland includes housing (4) and buckle closure (6), buckle closure (6) fastens with the outer end of housing (4), and the inner of housing (4) snaps in shell (1).
Air filter the most according to claim 2, it is characterised in that: described buckle closure (6) is by connecting band (5) with outer Shell (1) connects.
Air filter the most according to claim 1, it is characterised in that: described gland is the lid (10) of concave shaped, In gland press-in shell (1).
5. a transfusion device, including bottle plug puncture unit (14), it is characterised in that: the side of bottle plug puncture unit (14) has and air The first connection end (13) that filter connects, has the vent cap (15) with bottle plug puncture unit (14) in the first connection end (13) The cavity communicated；Air filter uses arbitrary described air filter in Claims 1 to 4, wherein, shell (1) away from One end of gland arranges the second connection end (11), has, in the second connection end (11), the cavity that the inner chamber with shell (1) communicates, the Two connect end (11) is connected end (13) connection by flexible pipe (12) with described first.
6. a transfusion device, including bottle plug puncture unit (14), it is characterised in that: the side of bottle plug puncture unit (14) has air mistake The installation end (16) of filter device, has the cavity that the vent cap (15) with bottle plug puncture unit (14) communicates in installation end (16), Air filter includes that air-filtering membrane (3), one-way membrane (2) and gland, air-filtering membrane (3) and one-way membrane (2) are arranged on In the cavity of above-mentioned installation end (16), one-way membrane (2) is positioned between air-filtering membrane (3) and bottle plug puncture unit (14), gland with The opening of installation end (16) outer end coordinates, and one-way membrane (2) uses elastic material, and one-way membrane (2) includes the interior activity integrally connected The circular membrane (7) of diaphragm (8) and its periphery；In time without External Force Acting, interior moving diaphragm (8) is fully located in circular membrane (7) and it Periphery matches with the inwall of circular membrane (7).
Transfusion device the most according to claim 6, it is characterised in that: described gland includes housing (4) and buckle closure (6), shell Body (4) the inner snaps in installation end (16), and buckle closure (6) fastens with the outer end of housing (4).
Transfusion device the most according to claim 7, it is characterised in that: described buckle closure (6) is by connecting band (5) and housing (4) connect.
Transfusion device the most according to claim 6, it is characterised in that: described gland is the lid (10) of concave shaped, gland In press-in shell (1).
CN201610789092.5A 2016-08-31 2016-08-31 Air filter and infusion apparatus Withdrawn CN106310439A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610789092.5A CN106310439A (en) 2016-08-31 2016-08-31 Air filter and infusion apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610789092.5A CN106310439A (en) 2016-08-31 2016-08-31 Air filter and infusion apparatus

Publications (1)

Publication Number Publication Date
CN106310439A true CN106310439A (en) 2017-01-11

Family

ID=57790014

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610789092.5A Withdrawn CN106310439A (en) 2016-08-31 2016-08-31 Air filter and infusion apparatus

Country Status (1)

Country Link
CN (1) CN106310439A (en)

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