WO2017187544A1 - Filtre à corps moulé utilisant un film de ptfe, et sac ou contenant jetable pour aspirateur médical utilisant ledit filtre à corps moulé - Google Patents

Filtre à corps moulé utilisant un film de ptfe, et sac ou contenant jetable pour aspirateur médical utilisant ledit filtre à corps moulé Download PDF

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Publication number
WO2017187544A1
WO2017187544A1 PCT/JP2016/063148 JP2016063148W WO2017187544A1 WO 2017187544 A1 WO2017187544 A1 WO 2017187544A1 JP 2016063148 W JP2016063148 W JP 2016063148W WO 2017187544 A1 WO2017187544 A1 WO 2017187544A1
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Prior art keywords
container
filter
disposable bag
molded
endocrine
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PCT/JP2016/063148
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English (en)
Japanese (ja)
Inventor
悠一 佐紺
暁 倉本
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悠一 佐紺
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Application filed by 悠一 佐紺 filed Critical 悠一 佐紺
Priority to PCT/JP2016/063148 priority Critical patent/WO2017187544A1/fr
Priority to JP2017508710A priority patent/JP6185212B1/ja
Priority to JP2018514711A priority patent/JP7055379B2/ja
Priority to PCT/JP2017/016811 priority patent/WO2017188398A1/fr
Publication of WO2017187544A1 publication Critical patent/WO2017187544A1/fr
Priority to JP2021180933A priority patent/JP2022010088A/ja

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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
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems

Definitions

  • the present invention is a medical aspirator system, which aspirates a patient's exhaled breath, body endocrine substances and saline, waste liquid such as blood, stores it, discards it when it reaches a certain storage amount, and can be discarded
  • the present invention relates to a bag or a container, and a molded article filter used therefor.
  • a structurally essential port is a suction port for introducing exhaled breath and body endocrine substances sucked from the patient into the bag, and an opening for exhausting the air in the bag to a rigid container outside the bag.
  • the opening for exhaustion contains a body endocrine that is aspirated simultaneously with air permeability for transmitting suction (negative pressure) from the external suction pump to the suction catheter inserted into the patient's body.
  • a waterproof filter is also required to prevent filtration through the opening to the suction pump side.
  • a sintered body of high molecular weight polyethylene is immersed in an aqueous solution of sodium carboxymethylcellulose (CMC) and dried to obtain a function corresponding to these two requirements, ie, two types of cylindrical molded articles Molded articles made of different materials are used as ventilation / waterproof filters (hereinafter referred to as "PE sintered bodies / CMC filters”) in the form of blocking the exhaust port.
  • PE sintered bodies / CMC filters ventilation / waterproof filters
  • the above-mentioned PE sintered body / CMC filter is used worldwide as a vent / waterproof filter in the form of blocking the exhaust port.
  • the present PE sintered body / CMC filter has a large defect as described in detail below.
  • patents and developments and proposals on novel filter materials and molded filters formed using them have hardly been made in the past including Europe and the United States.
  • the basic system 100 is usually configured as schematically shown in FIG. (1)
  • a suction port 11 for connecting a suction catheter 18 for suctioning body endocrine substances and the like of a patient etc., and for discharging the air in the bag from the bag through the filter 12 while preventing water leakage.
  • Disposable plastic bag 110 which is made of flexible plastic and has an exhaust port 13 and is formed so as to be able to store body endocrine such as a patient in this bag 110 (2)
  • a rigid container body 120 having a discharge port 15 / suction port 16 for storing a disposable bag or the like and for reducing the pressure inside, and its lid 122 (3)
  • Aspirator main body 130 for generating a suction force by an electric motor (4)
  • Suction port for transferring suction force to the catheter 18 (5)
  • Tube 19 for connecting the rigid container main body 120 and the suction main body 130 and a joint for mounting the same (not shown)
  • the basic system 100 stores the disposable bag 110 of (1) inside the rigid container body 120 of (2), and directly connects the exhaust port 13 of the bag and the suction port 16 on the side of the suction device 130 of (3). Instead of connecting the discharge port 15 of the rigid container and the suction port 16 on the suction device side, the pressure in the rigid container is reduced to reduce the pressure from the exhaust port 13 of the disposable bag etc. There is. The reason for this is that since the bag is expanded under reduced pressure, storage of body endocrine substances etc. is facilitated and at the same time it is simple at the time of removal of the suction bag, and body endocrine substances etc. in the bag are temporarily sintered. Even if it leaks from the body / CMC filter 12, it is a safety measure to store this in a rigid container and prevent it from being absorbed directly by the suction mechanism on the main body side.
  • a PE sintered body / CMC filter is formed in a molded article of plastic (PP) provided with a pair of suction port and exhaust port to close the exhaust port.
  • the molded product is formed by a method of heat-sealing a plastic bag and a molded product by storing the molded product inside a flexible plastic bag.
  • the mechanism for suctioning secretions from the patient's body into the disposable bag etc. is as follows. First, the aspirator main body 130 sucks the air in the rigid container from the discharge port 15 of the rigid container main body 120 at a pressure of usually 20 to 35 kPa, and the pressure in the rigid container is reduced. As a result, the disposable bag etc. 110 stored in the rigid container expand due to the pressure difference, and at the same time, the air in the disposable bag etc. is discharged from the exhaust port 13 of the disposable bag etc. 110 through the ventilation filter attached to the same bag. As a result, suction force is generated in the bag 110, whereby the body's endocrinecrine substance and the like of the patient are sucked into the disposable bag and the like 110 through the suction catheter 18.
  • Patent Document 1 Japanese Patent Publication No. 2015-521069, “waste liquid container device and suction bag unit”), “a suction port (a liquid discharge container device is connected to a suction source and the suction bag is exhausted) ) May be placed in the lid, may be directly connected to the suction bag, and may be placed in a rigid drainage container so that the drainage container is first evacuated and then It is described for the first time that the suction bag located therein is evacuated. And, it is supposed that the deformation of these shapes belongs to the most known.
  • Vacuum suction waste bag member "High-performance filter and vent”, Essentra Porous Technologies, 2014 “3786-012 Filter Valve”, Vacsax Limited Material Specification, January 2012 Carboxymethylcellulose sodium “serogen” general catalog, Daiichi Kogyo Seiyaku Co., Ltd.
  • the disposable bag etc. 110 stores the sucked body endocrine etc. in the bag and discards it together with the bag when it reaches a predetermined amount, and the body endocrines sucked and stored in the bag is the filter part It is necessary to prevent leakage from the exhaust port 13 through 12 and contaminating the inside of the rigid container body 120 and also to adversely affect the suction mechanism of the aspirator body 130. Furthermore, when ventilating the discharge port, or even if a body endocrine substance or the like leaks the filter portion, the filter portion must have bacterial barrier property. It goes without saying that it is important whether or not the bacteria contained therein are removed when exhausting through the body exhalation filter or leakage of body endocrine substances and the like.
  • the current filter is based on the idea that two kinds of materials, ie, a molded article of a polymer and another polymer swelling material, are combined to have an air-permeable function and a waterproof function, respectively.
  • the present air-permeable / water-proof filter is made by immersing a porous PE sintered body, which is formed into a desired shape by heat-sealing PE having a small particle size, into a water-soluble CMC solution and Dry to manufacture.
  • the air permeability is derived from the porous nature of the PE sintered body, and the standard opening range is approximately 30 to 50 ⁇ m.
  • this PE sintered body is usually in the shape of a cylinder without one bottom and about 3.7 to 3.9 mm. It is formed thick.
  • the waterproof function is that CMC, which exists in the state of coating individual particle surface of PE sintered body, expands rapidly when it comes in contact with liquid body endocrine etc., and blocks the pores of PE sintered body. It is expressed. For this reason, some companies that manufacture and sell ventilated and waterproof filters in Europe and the United States refer to CMC used for filters as a self-sealing material. In addition, the bacteria / aerosol removal rate in this filter is described as 99.9 to 99.98% in the pamphlet, despite the large pore diameter of the PE sintered body.
  • the first problem with conventional filters is that PE sinter and CMC filters, which are currently used as standard aeration and waterproof filters for medical aspirators in Japan and the world, are fundamentally waterproof for a long time To have a This is due to the ease of water solubility of the CMC responsible for the waterproof function.
  • the second problem is the pore size and bacterial barrier property of the PE sintered body. As mentioned above, this is a concern because the pore diameter of the PE sintered body is larger than the size of the bacteria.
  • the third problem is that the ventilation performance is insufficient.
  • the first problem that is, the problem of the water solubility of CMC having a waterproof function
  • the PE sintered body / CMC filter When the PE sintered body / CMC filter is immersed in tap water for about 24 hours, it is easily observed that a considerable amount of liquefied CMC is eluted. This phenomenon clearly shows that the mixture of CMC solution and body endocrine products is directly linked to the serious problem that it easily leaks out from the outlet of the disposable bag or the like.
  • the waterproofing performance required for disposable bags etc. and the waterproofing function of the present PE sintered body / CMC filter are analyzed and compared in detail.
  • the first aspect relates to waterproofing for a long time. Although disposable bags after used are stored after being incinerated, due to the waterproofness of the bags, body endocrine substances including bacteria and viruses leak out of the bags during the storage period, resulting in hygiene for the environment and humans etc. It must be absolutely prevented to cause problems. For example, the risk of the disposable disposable bag etc. getting wet due to rain is easily imagined.
  • the second aspect relates to instantaneous waterproofness. The filter is submerged in body endocrine while being aspirated, and instantaneously mist or liquid body endocrine etc.
  • the PE sintered body / CMC filter can cope with the second instantaneous waterproof function, which has serious problems in long-term waterproofness.
  • the PE sintered body / CMC filter currently widely used in the world and in Japan lacks waterproofing for a long time.
  • the barrier property against bacteria of the ventilation / waterproof filter is the two cases of the barrier property against this body exhalation and the barrier property when body endocrine substances etc. leak out from the ventilation / waterproof filter together with the CMC solution as mentioned above.
  • the barrier property of the filter It is general to judge the barrier property of the filter to the first exhalation breath using the bacteria aerosol removal rate (JIS L1912) as an index.
  • JIS L1912 bacteria aerosol removal rate
  • no established indicator is found in the barrier properties to bacteria when liquid leaks from the filter.
  • the size of the bacteria and the size of the pore size of the PE sintered body are crucial.
  • the size of the bacteria is 0.8 (S. aureus) to 10 ⁇ m, whereas the pore diameter in the state where the CMC is coated is unknown, but the pores of the PE sintered body are approximately 30 to 50 ⁇ m It is.
  • PE sintered body filters are considered to exhibit high barrier property in the bacteria aerosol removal rate test unless their pores have pores of 10 ⁇ m or less, but the barrier property in liquid material is essentially to bacteria. It is considered that it does not have a barrier function. And, with PE sintered body / CMC filter, it is not possible to make the pore to 30 to 50 ⁇ m or less, due to the limitations of sintering technology and the necessity of securing air permeability of a certain amount (20 L) or more (35 kPa ⁇ 16 cm 2 ) It is possible. Therefore, it is considered that the present PE sintered body / CMC filter basically has great concern for the bacterial barrier property. In the future, we plan to quickly investigate the bacterial barrier properties of PE sintered bodies and CMC filters.
  • Non-Patent Document 1 which is a standard PE sintered body and waterproof filter at present is 0.0391 L, and Non-Patent Document 2 has 0.0514 L It has become.
  • Non Patent Literatures 1 and 2 filter areas of 14.61 cm 2 (3.9 ⁇ 3.9 cm) and 11.12 cm 2 (3.4 ⁇ 3.4 cm), respectively. Is required.
  • the surface area of non-patent documents 1 and 2 which makes a cylindrical product with a standard product is about 16 cm 2 . Therefore, with the current PE sintered body / CMC filter, it is difficult to reduce the filter surface area below the current state.
  • the air flow rate per unit suction power / unit area is large. Must.
  • the above calculation is premised on that the aeration flow rate is linearly proportional to the unit differential pressure and the unit area. Miniaturization of the filter reduces production costs and increases the design freedom of disposable bags and the like.
  • the object of the present invention is considered to be relatively safe, with ventilation performance comparable to current products, while solving the problem of long-term waterproofness which is a fundamental defect of current PE sintered body and CMC filters. It is an object of the present invention to provide a molded article filter formed of a porous PTFE film having a bacterial barrier property, and a disposable bag or the like in which the molded article filter is incorporated.
  • base molecular weight for example, standard specific gravity is 2.16 or more or less
  • presence or absence of copolymerization component base material shape (round bar, rolling, sheet)
  • stretching method uniaxial, biaxial
  • the air permeability of the PTFE film depends on the draw ratio, and in general, uniaxial stretching forms a fillet (fiber) extending in parallel with the node, and biaxial stretching reduces the node and fillet together.
  • ventilation and waterproofness are both improved by randomizing the direction of filling. It has been found that proper selection in consideration of the production method and structure thereof is crucial in the selection of the PTFE film.
  • Table 1 summarizes the relationship between single layer / lamination, uniaxial / biaxial, and ventilation / waterproof function.
  • PTFE In order to use the PTFE film in a breathable / waterproof filter which is actually incorporated in a disposable bag of a medical aspirator, etc., PTFE integrally achieves the individual requirements of air permeability, waterproofness and maximum pore diameter (bacterial / barrier property) Experiments were conducted to determine if the film was present, and if so, how to balance these at high levels.
  • the film pore diameter is up to 0.8 ⁇ m, but with a pore diameter of 1 ⁇ m, under the suction force (differential pressure) of 35 kPa, 24 L / min with the same area (16 cm 2 ) It was actually confirmed that both ventilation and bacterial / barrier measures were compatible.
  • the water pressure resistance test of JIS L1912 proved to be of a type in which both aeration, bacteria and barrier properties were confirmed.
  • the PTFE films of the invention were screened based on their water pressure resistance data, and water leakage experiments were carried out using PTFE films having a maximum pore diameter in the range of 0.2 to 5.0 ⁇ m. The result was extremely good that no water leak occurred under the suction force (differential pressure) of 35 kPa required for the medical suction device.
  • the differential pressure condition which is the premise of the waterproofness is 35 kPa, and 70 kPa corresponds to a safety factor of 2.0 times, it can be judged that this result also has sufficient waterproofness.
  • the maximum pore diameter of the appropriately selected PTFE film is in the range of 1 to 5.0 ⁇ m, simultaneously satisfying at a high level the breathability and waterproofness required for disposable bags etc. and the bacterial barrier properties. It has been proved that things are actually obtained. It should be noted that, unlike the CMC film, if there is no problem in instantaneous waterproofing, the PTFE film is waterproofed for a long time without causing any water leakage.
  • the PTFE film is intended to be used alone without laminating a support such as PP or PET non-woven fabric on the PTFE film in order to suppress the production cost of the PTFE filter.
  • An adhesive can not be used for laminating the PTFE film and the three-dimensional shaped part 200, and both are joined by a method of heat-sealing them, and the airtightness of the heat-sealing part is sufficiently maintained under a reduced pressure of 35 kPa. I was able to confirm it.
  • the bonding part area of 4 sides can be taken large, and it can also bond with an adhesive.
  • a method of directly laminating the PTFE film on a three-dimensional shaped part and heating the hot plate from the upper side of the PTFE film is preferable.
  • the following can be mentioned as an effect in the case of using the molded article filter formed from the PTFE film according to the present invention as a breathable / waterproof / bacterial / barrier filter incorporated in a disposable bag or the like.
  • the aeration / waterproof / bacterial / barrier filter of the present invention is completely waterproof, and is a fundamental defect of the present PE sintered body / CMC filter, which occurs when discarding and storing disposable bags etc. May be prevented from leaking out of the bag, such as mixtures of CMC solution and body endocrine substances.
  • the aeration / waterproof filter of the present invention which has a pore diameter of at most 1 ⁇ m, can theoretically suppress leakage of most bacteria to the outside of the bag for both internal exhalation and systemic endocrine substances and the like.
  • the air permeability of the new aeration / waterproof filter of the present invention using a base material having an opening diameter of 5 ⁇ m is 0.086 L / 1 kPa ⁇ 1 cm 2 ⁇ 1 min.
  • the air permeability is 0.0514 L / 1 kPa ⁇ 1 cm 2 ⁇ 1 / 1.67 times. This means that the surface area of the aeration and waterproofing filter of the present invention can be reduced to 60% (9.6 cm 2 ).
  • the size of the aeration / waterproof filter of the present invention can be reduced as compared with the existing PE sintered body / CMC filter, and therefore, the design of the disposable bag etc. and attachment of the suction port and exhaust port thereto is free. Degree will increase.
  • FIG. 1 is a schematic block diagram of the basic system of the present medical aspirator.
  • FIG. 2A is a perspective view of a three-dimensional shaped component used in the disposable bag and the like according to the present invention (before bonding of the filter substrate).
  • FIG. 2B is a perspective view of a molded article filter (three-dimensionally shaped component after filter substrate bonding) used for a disposable bag and the like according to the present invention.
  • FIG. 3A is a perspective view of the ventilation component used for the disposable bag etc. based on this invention.
  • FIG. 3B is a perspective view of the ventilation part after attaching a three-dimensional part for use in the disposable bag etc. according to the present invention.
  • FIG. 4A is a perspective view of a flexible bag used for a disposable bag etc.
  • FIG. 4B is a perspective view of a disposable bag and the like after all of the ventilated part, the three-dimensionally shaped part, and the flexible bag according to the present invention are joined.
  • FIG. 5A is a cross-sectional view showing a disposable bag etc. according to the present invention housed in a rigid container.
  • FIG. 5B is a perspective view showing a rigid container containing the disposable bag and the like according to the present invention in a state in which the lid is opened.
  • the disposable bag etc. which make the molded part which has the ventilation and waterproof function formed using a PTFE film etc. into the integral product part can manufacture the type with various shape, a function, and a size.
  • representative embodiments of the present invention will be described.
  • FIG. 2A shows a three-dimensionally shaped component 200 that heat-seals the PTFE film 25 to the opening 21 later.
  • This shape uses polypropylene (PP) as a raw material and is manufactured by injection molding using a mold.
  • This three-dimensional shaped part has an opening 21 which is a region for heat-sealing a PTFE film or the like, a lattice rib 22 for supporting the PTFE film at the opening, and an internal cavity 23 which is a flow passage of passing air.
  • It has a fitting shape 24 for attachment to the molding shown in FIG. 3A.
  • one side, both sides, four sides, or four sides and a bottom face of a substantially rectangular molded component may be used as the opening.
  • the shape of the said three-dimensional shaped component can be various things, such as cylindrical shape and disk shape besides a rectangular parallelepiped. The open areas in this example are shown in Table 3.
  • FIG. 2B shows the molded part 210 in a state in which the PTFE film 25 is heat-sealed to the three-dimensional part.
  • this molded part 210 is referred to as a "molded filter”.
  • the thickness of the PTFE film used in this example is in the range of 50 to 200 ⁇ m, and the maximum pore diameter is in the range of 0.2 to 5 ⁇ m.
  • the thickness containing PET nonwoven fabric was 300 micrometers or less (pore diameter can not be prescribed).
  • FIG. 3A shows the appearance of a molded manufactured vent component 300 inscribed in a film bag.
  • the aeration component 300 has a suction port 31 for joining the suction catheter 18 and its cap 32, a mounting shape 33 to a rigid container, and a fitting portion 34 with a fitting shape 24 of the PTFE film heat sealing solid shape component 200, And an exhaust port 35, and a joint portion 36 by heat fusion or the like with a film bag for storing body endocrine products and the like.
  • a vulcanized rubber is separately used for the outlet 37 of the suction port on the film bag side in order to prevent backflow of body endocrine products etc. stored in the film bag or their mist-like substances back into the suction pipe. Mounting the check valve 38 manufactured.
  • FIG. 3B shows a composite molded body 310 in which the PTFE filter of FIG. 2B which is heat-sealed is fitted and integrated with the vented part of FIG. 3A in an airtight state.
  • the integration it is of course possible to perform the integration to maintain the air tightness not by the fitting but by heat fusion of both.
  • FIG. 4A shows an example of a film bag for storing body endocrine substances and the like.
  • the film bag is generally formed by multilayer inflation molding using linear polyethylene (LLDPE), polyethylene terephthalate (PET) resin, and / or nylon resin (NY), and further an adhesive resin.
  • LLDPE linear polyethylene
  • PET polyethylene terephthalate
  • NY nylon resin
  • the film bag is composed of three layers, and the thickness is 30 ⁇ m for the outer layer (PET), 7 ⁇ m for the adhesive resin layer, and 120 ⁇ m for the inner layer (LLDPE).
  • the internal volume of a present Example is 1300 cc.
  • FIG. 4B shows a form in which the composite molded body 310 of FIG. 3B is inscribed and airtightly heat-sealed inside the upper end of the film bag of FIG. 4A.
  • a final product for a medical suction device configured from the above-described film bag 400 and the integrated composite molded body 310 using the three-dimensional shaped component 210 having the function of ventilation and waterproofing formed using the PTFE film Disposable bag 410 is completed.
  • the present embodiment shows an example in which the composite molded body 310 is inscribed in the bag, it may be jointed and joined to the outside of the film bag. Further, the mounting position of the composite molded body 310 to the film bag does not have to be at the upper end of the film bag 400, and may be at four sides of the bag or at a middle position of the side corner portions.
  • FIGS. 5A and 5B show the finally completed disposable bag attached to the rigid container 500.
  • FIG. FIG. 5B shows an example in which the composite molded body 310 is not a vertical type PTFE film three-dimensional shaped part as shown in FIG. 3B but a horizontal type.
  • a three-dimensional shaped part in which the PTFE film is heat-sealed that is, a molded, is used in order to use a detour exhaust system in which the rigid container is depressurized by the aspirator body and the interior of disposable bag etc.
  • the disposable bag or the like may be directly suctioned by the suction device main body to be decompressed.
  • the suction tube directly connected to the vessel body may be connected to the outlet side of the filter.
  • the molded product filter is provided in contact with the inside of the discharge port 15 of the rigid container or its lid, and the exhaust port 35 of the venting part 300 and the inlet of the molded product filter are connected by a suction tube and suctioned from the suction port 16 It is good also as composition.
  • the molded body filter may be provided somewhere on the suction tube.

Abstract

L'invention concerne un filtre à corps moulé présentant une perméabilité à l'air qui est au moins équivalente à celle des filtres en CMC-PE compacts frittés, une imperméabilité à l'eau à court terme et à long terme, et des propriétés améliorées de barrière contre les bactéries. L'invention concerne en outre un sac ou contenant jetable comprenant ledit filtre à corps moulé. Un film de polytétrafluoroéthylène (PTFE) poreux, ayant une structure et un diamètre de pores donnés, est utilisé comme matériau de base de filtre. Le matériau de base de filtre est thermofondu ou thermocollé, par l'intermédiaire d'un adhésif, à un composant tridimensionnel qui est creux à l'intérieur et comprend une partie de support permettant de fixer le matériau de base de filtre de type film, ladite partie de support étant pourvue d'une nervure en forme de maille empêchant le gonflement vers le côté intérieur du matériau de base de filtre, de sorte qu'un filtre à corps moulé est constitué par liaison à la partie de support de façon à préserver l'étanchéité à l'air du composant tridimensionnel. Ledit filtre à corps moulé est fixé à l'orifice d'évacuation d'un sac ou contenant jetable de sorte que l'expiration interne et l'air présent à l'intérieur du sac ou contenant jetable passent bel et bien au travers lorsqu'ils sont évacués vers l'extérieur du sac ou contenant jetable.
PCT/JP2016/063148 2016-04-27 2016-04-27 Filtre à corps moulé utilisant un film de ptfe, et sac ou contenant jetable pour aspirateur médical utilisant ledit filtre à corps moulé WO2017187544A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
PCT/JP2016/063148 WO2017187544A1 (fr) 2016-04-27 2016-04-27 Filtre à corps moulé utilisant un film de ptfe, et sac ou contenant jetable pour aspirateur médical utilisant ledit filtre à corps moulé
JP2017508710A JP6185212B1 (ja) 2016-04-27 2016-04-27 Ｐｔｆｅフィルムを用いた成形体フィルター、及びそれを用いた医療吸引器用ディスポーザブルバッグまたは容器
JP2018514711A JP7055379B2 (ja) 2016-04-27 2017-04-27 医療吸引器用ディスポーザブルバッグまたは容器用ウイルス捕集性フィルター
PCT/JP2017/016811 WO2017188398A1 (fr) 2016-04-27 2017-04-27 Filtre de piégeage des virus pour sac ou contenant jetable pour aspirateur médical
JP2021180933A JP2022010088A (ja) 2016-04-27 2021-11-05 医療吸引器用ディスポーザブルバッグまたは容器用ウイルス捕集性フィルター

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PCT/JP2016/063148 WO2017187544A1 (fr) 2016-04-27 2016-04-27 Filtre à corps moulé utilisant un film de ptfe, et sac ou contenant jetable pour aspirateur médical utilisant ledit filtre à corps moulé

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WO2017187544A1 true WO2017187544A1 (fr) 2017-11-02

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PCT/JP2017/016811 WO2017188398A1 (fr) 2016-04-27 2017-04-27 Filtre de piégeage des virus pour sac ou contenant jetable pour aspirateur médical

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US20210252207A1 (en) * 2018-03-30 2021-08-19 Greenpla Co., Ltd. Virus-collecting filter for medical aspirator system
KR102363622B1 (ko) * 2018-12-05 2022-02-24 최대한 의료용 석션장치
CN113069600B (zh) * 2021-03-05 2023-08-01 南京超图中小企业信息服务有限公司 一种肝胆胰外科手术用腹腔引流装置

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