CN102371013A

CN102371013A - Disposable precision filtering infusion apparatus

Info

Publication number: CN102371013A
Application number: CN2010102650754A
Authority: CN
Inventors: 林景春
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-08-25
Filing date: 2010-08-25
Publication date: 2012-03-14

Abstract

The invention discloses a disposable precision filtering infusion apparatus. The infusion apparatus is formed by communicating a bottle plug puncture outfit, an air inlet piece, a dropping funnel, a liquid inlet multi-way fitting, filters, a liquid outlet multi-way fitting, an injection piece and an intravenous injection needle in sequence through a dropping tube and sleeving a flow adjuster on the dropping tube, and is characterized in that: each filter is provided with a filter membrane of which the pore diameter is less than or equal to 5 mum; the area of the filter membrane and the volume of each filter are suitable for quickly injecting liquid into the filter, so that air in the filter is easy to exhaust without forming an exhaust channel; and a plurality of filters are communicated in parallel through the liquid inlet multi-way fitting and the liquid outlet multi-way fitting. The area of a filter membrane for filtering fine particles during infusion is the sum of the areas of the filter membranes of which the pore diameters are less than or equal to 5 mum for each filter.

Description

Disposable use precision filter infusion set

Technical field

The invention belongs to a kind of medical apparatus and instruments, the disposable use precision filter infusion set that especially when transfusion, uses.

Background technology

The filter membrane aperture of disposable use precision filter infusion set≤5 μ m, flow rate of liquid is slower, for satisfying the requirement of clinical transfusion flow velocity; The filter membrane area just needs bigger, and at present, disposable use precision filter infusion set all only is located at needed filter membrane in the liquid medicine filter; Because the filter membrane area is bigger, causes the filter volume also bigger, cause liquid to be difficult for filling with fast filter; The interior air of filter is difficult to discharge, and needs the exhaust passage that is coated with hydrophobic exhaust membrane is set, and the interior air of filter is discharged easily; So not only increase manufacturing cost and difficulty, and because of the material of hydrophobic exhaust membrane, the low-energy surface of polytetrafluoroethylene (PTFE); Adhesion is poor, and difficult bonding characteristic makes the bonding strength of it and filter housings not enough; Cause when infusion, particularly when higher pressure infusion of need or long-time large capacity transfusion, be easy to generate the medicinal liquid seepage at the position, exhaust passage.

Summary of the invention

For overcoming present disposable use precision filter infusion set, the requirement of satisfying clinical transfusion flow velocity and filtering microgranule, the filter membrane of needed membrane aperture≤5 μ m; All only be located in the filter, cause the filter volume too big, liquid is difficult for filling with fast filter; The interior air of filter is difficult to discharge, and needs the exhaust passage that is coated with hydrophobic exhaust membrane is set, and the interior air of filter is discharged easily; So not only increase manufacturing cost and difficulty, and because of the material of hydrophobic exhaust membrane, the characteristic that low-energy surface, the adhesion of polytetrafluoroethylene (PTFE) is poor, difficult bonding; Make the bonding strength of it and filter housings not enough; Cause when infusion, particularly when higher pressure infusion of need or long-time large capacity transfusion, be easy to generate the defective of medicinal liquid seepage at the position, exhaust passage.

The disposable use precision filter infusion set of the present invention; Be how logical, filter by bottle plug puncture unit, air inlet part, dropping funnel, feed liquor, fluid be how logical, injection member, intravenous needle be communicated with through dropper in regular turn, and form at the sheathed flow regulator of dropper, described feed liquor how logical with fluid logical separating tubes that a person in charge and equal number are all arranged how; Each root separating tube that feed liquor leads to more; The inlet that is communicated with a filter, each root separating tube that fluid is led to more, the liquid outlet of a filter of connection; How logical person in charge's feed liquor is connected with dropping funnel through dropper, and how the logical person in charge is communicated with injection member, intravenous needle to fluid.

Described filter is a plurality of, can set number according to needs, as 2,3 or more, but is at least 2.Said filter is provided with the filter membrane of membrane aperture≤5 μ m, and filter membrane area size and filter volume should be able to be fit to filter and fill with liquid fast, makes in the filter air discharge and need not to be provided with the exhaust passage easily.Described filter, be how logical through feed liquor, how logical parallel connection is communicated with fluid.

The separating tube numbers that described feed liquor leads to more and fluid is led to more; All equate with the filter number; Can set according to needs, be 2 like the filter number, and then the many logical separating tubes of feed liquor and the number of the fluid separating tubes that lead to respectively are 2 respectively more; Like the filter number is 3, and the then many logical separating tubes and the number of the fluid separating tubes that lead to respectively are 3 respectively more.

During transfusion, medicinal liquid is, fluid each filter that how logical parallel connection be communicated with how logical through feed liquor, the microgranule of filtering simultaneously.The common filter membrane area of filtering microgranule simultaneously, the filter membrane area sum of each filter that is communicated with for parallel connection.

Through more than, it is needed all to be provided with disposable use precision filter infusion set to one, the filter membrane of aperture≤5 μ m causes the filter volume excessive, liquid is difficult for filling with fast, air is difficult to discharge, and the filter of exhaust passage need be set.Divide and be set as the filter membrane that several are provided with aperture≤5 μ m; Filter membrane area and filter volume size, be fit to that liquid is prone to fill with, make air to be prone to discharge fast and the filter that need not to be provided with the exhaust passage, and, fluid technical scheme that how logical parallel connection be communicated with how logical through feed liquor, avoid; Present disposable use precision filter infusion set; Because of the filter membrane of needed membrane aperture≤5 μ m, all be located in the filter, and the defective that produces.

Description of drawings

Fig. 1 is the floor map of disposable use precision filter infusion set basic block diagram of the present invention and operation principle.

--bottle plug puncture unit (2)--air inlet part (3)--dropping funnel (4)--feed liquor is logical (5) how--filter (6)--fluid is logical (7) how--injection member (8)--intravenous needle (9)--dropper (10)--flow regulator (the 11)--persons in charge (12) that feed liquor the is how logical--separating tubes (13) that feed liquor the is how logical--separating tubes (14) that fluid is how logical--fluid how logical persons in charge (15)--filter membrane of aperture≤5 μ m among the figure (1)

The specific embodiment

Below in conjunction with accompanying drawing and embodiment, the disposable use precision filter infusion set of the present invention is further specified.

Like Fig. 1; Disposable use precision filter infusion set of the present invention; Be by bottle plug puncture unit (1), air inlet part (2), dropping funnel (3), feed liquor how logical (4), filter (5), fluid how logical (6), injection member (7), intravenous needle (8) is communicated with in regular turn through dropper (9), and at the sheathed flow regulator of dropper (9) (10) composition, wherein; How logical person in charge's feed liquor (11) is connected with dropping funnel (3) through dropper (9); How logical every separating tube (12) is communicated with a filter (5) inlet respectively to feed liquor, and how logical every separating tube (13) is communicated with a filter (5) liquid outlet respectively to fluid, and how the logical person in charge (14) is communicated with injection member (7), intravenous needle (8) to fluid.Each filter (5) is provided with aperture≤5 μ m filter membranes (15), and filter membrane area and filter volume size, suitable filter are filled with liquid fast, make the interior air of filter (5) discharge easily, and need not to be provided with the exhaust passage that covers hydrophobic exhaust membrane.Described filter is a plurality of (embodiment is an example with 3), can set number according to needs, as 2,3 or more, but is at least 2.

The number of the separating tubes (13) that separating tube (12) that feed liquor leads to more and fluid are led to more; All equal with filter (5) number; Like filter (5) number is 2; Then the many logical separating tubes (12) of feed liquor and the number of the fluid separating tubes (13) that lead to respectively are 2 respectively more, are 3 like filter (5) number, and the number of the separating tubes (13) that then separating tubes (12) that lead to and fluid are led to more more respectively is 3 respectively.

During transfusion; The every separating tube (12) that medicinal liquid is led to by feed liquor more; Divide simultaneously to flow into the filter (5) of connection separately, behind aperture≤5 μ m filter membrane (15) filtering microgranules that the filter (5) that is communicated with separately is provided with, through the many logical separating tubes (13) of fluid that are communicated with separately; The person in charge (14) of confluxing and leading to into fluid more flows into injection member (7), intravenous needle (8) again.During transfusion, disposable use precision filter infusion set, the filter membrane area of filtering microgranule is aperture≤5 μ m filter membrane (15) the area sums of each filter (5) setting at the same time.

Claims

1. disposable use precision filter infusion set; Be by be how logical, filter by bottle plug puncture unit, air inlet part, dropping funnel, feed liquor, fluid be how logical, injection member, intravenous needle be communicated with through dropper in regular turn, and forms at the sheathed flow regulator of dropper, it is characterized in that: the number of described filter is a plurality of; And be provided with that feed liquor is how logical, how logical fluid is; Parallel connection is communicated with each filter, each root separating tube that feed liquor leads to more, the inlet of a filter of connection; Each root separating tube that fluid is led to more, the liquid outlet of a filter of connection.

2. disposable use precision filter infusion set according to claim 1 is characterized in that: described filter is provided with the filter membrane of aperture≤5 μ m; Filter membrane area and filter volume size; Suitable filter is filled with liquid fast, and air is discharged easily, need not to be provided with the exhaust passage.

3. disposable use precision filter infusion set according to claim 1 is characterized in that: the separating tube numbers that described feed liquor leads to more and fluid is led to more all equate with the filter number.