US3782265A - Assembly for separating a dust-free part from a space, and method for disinfecting the same - Google Patents

Assembly for separating a dust-free part from a space, and method for disinfecting the same Download PDF

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Publication number
US3782265A
US3782265A US00140549A US3782265DA US3782265A US 3782265 A US3782265 A US 3782265A US 00140549 A US00140549 A US 00140549A US 3782265D A US3782265D A US 3782265DA US 3782265 A US3782265 A US 3782265A
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United States
Prior art keywords
space
air
dust
assembly
walls
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Expired - Lifetime
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US00140549A
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English (en)
Inventor
J Pielkenrood
Galen P Van
Nes J Van
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Pielkenrood Vinitex BV
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Pielkenrood Vinitex BV
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G13/00—Operating tables; Auxiliary appliances therefor
    • A61G13/10—Parts, details or accessories
    • A61G13/108—Means providing sterile air at a surgical operation table or area
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G10/00—Treatment rooms or enclosures for medical purposes
    • A61G10/02—Treatment rooms or enclosures for medical purposes with artificial climate; with means to maintain a desired pressure, e.g. for germ-free rooms

Definitions

  • ABSTRACT An assembly of tent-like units for isolating patients, 30 Foreign Application priority Data each unit comprising four columns supporting an air Ma 6 1970 Netherlands 7006660 supply chamber and pliable side walls, the air supply y chamber being designed for producing a uniform downward air flow in the unit in question for keeping [52] US. Cl 98/33, 98/32,:28/23691, out dust at the lower side of the pliable side walls- [5 11 um Cl F2 13/00 Such units may be coupled with one another at corre- Mei!
  • References Cited of such an assembly may be disinfected unit by unit by closing the connection between the unit to be disin- UNITED STATES PATENTS fected and an adjacent unit so that a patient should 2,502,263 Lewis not be removed from the assembly during disinfectio m 2,677,253 5/1954 Lee 2,912,918 11/1959 Snead 98/33 R 'ZClai rngQQrawingFjguges 2!
  • an assembly for separating a substantially dust-free part from a space comprises a frame delimiting, together with a floor, the part to be separated, which part is, furthermore, delimited by walls supported by this frame, at least a part of which consists of transparent plastic sheet or plate material, the rear wall being formed by the exit surface of the air filters, through which, air may be blown into the separated part of the space, and the front wall is open or may for the greater part be closed by a lid.
  • a pliable plastic hose is suspended in the frame and is connected to the filters, which hose forms the lateral and upper walls, and is partly lying on the floor.
  • Such an assembly is, in the first place, intended for nursing patients in a dust-free space.
  • the substantially horizontal air flow directed towards the partly open front wall keeps dust out of the separated part, and it is possible that nursing personnel enter this part against the air flow.
  • the patient remains visible through the transparent walls.
  • various instruments such as X-ray apparatus may be brought into the immediate vicinity of the patient without being freed of dust, and the walls may be provided with transfer locks, transfer openings, openings closed by gloves and the like.
  • Theprior assembly is less suitable for these purposes since the filter box makes the space inaccessible at one side, and the separated space may not arbitrarily be extended. Moreover such an assembly is designed for being accessible, which is, however, in the cases mentioned above not allowed at all, so that the provisions made to that end are useless then. Moreover such an assembly cannot be made suitable for being moved to other rooms and, when coupled with other dust-free spaces or transport means, disturbances in the flow distribution will occur which might endanger the dust-free condition. Finally the disinfection of such a space during the presence of the patient is rather difficult.
  • the invention provides an assembly which is adapted to the special requirements mentioned above.
  • the assembly according to the invention is characterized in that the upper wall of the separated part is formed by the perforated exit wall of dust filters or an air supply box, and in that the side walls supported by the frame which join the dust filters or this box and the upright columns of the frame in a substantially dustproof manner terminate over the full circumference at a small distance from the floor, this in such a manner that the substantially vertical air flow in the separated part may escape along the bottom and form there a flow; keeping out dust.
  • FIG. 1 is a cross-section of two assemblies according to the invention and a transfer box interconnecting these assemblies along the line II of FIG. 3;
  • FIG. 2 is a cross-section along the line II-II of FIG.
  • FIG. 3 is a cross-section along the line III-III of FIG. 1;
  • FIG. 4 is a diagrammatic cross-section on a larger scale of the upper end of a pliable side wall of such an assembly
  • FIGS. 5 and 6 are diagrammatic cross-section and top views, respectively of a special embodiment of a raised floor of such an assembly
  • FIG. 7 is a diagrammatic cross-section of a special transportable disinfection unit.
  • FIGS. 8A and B are simplified cross-sections of a transportable filter and disinfection unit in two different conditions.
  • the double'assembly shown in FIGS. 1-3 comprises four units 1 which are mutually equal.
  • Each unit comprises a frame with four columns 2 carrying at the top of a filter box 3 to which a blower chamber 4 is connected.
  • This filter box contains a number of dust filters, by means of which the air which is passed through can be efficiently freed from harmful dust.
  • the blower chamber preferably comprises two or more electric blowers adapted to suck in air from the ambient atmosphere and to blow it through the filters, this air being blown vertically downwards into the unit in question.
  • the various blowers are preferably connected to different network groups and, if necessary, to an emergency power supply in order to ensure the supply of air in the event of a breakdown. Moreover these blowers are equipped with such control means, that in spite of 5 an increasing contamination of the filters, a constant flow rate may be maintained, and on attainment of a critical contamination an alarm will be given.
  • the side walls 5 are provided at suitable points with openings 7 closed with gloves so that a patient may be assisted from the outside or other manipulations may be carried out from the outside. Since the persons who stick their hands into such openings are close to the side wall in question, it cannot be prevented that the front portion of their shoes are stuck under the side wall, which may lead to the introduction of dust. Therefore, it is preferred to provide a raised floor 8 in each unit 1 which comprises vertical side walls so that a small passage is formed where the air flowing outwards attains a higher velocity, so that any possibly introduced dust is blown away in a downward direction.
  • FIG. 4 shows the manner in which such a wall may be suspended.
  • a hollow guide 12 of the usual shape in which running wheels 13 are movable, from which the pliable wall 5 with pleats 5' may be suspended.
  • a resilient flap 14 is fastened to the channel 11 and/or the guide 13, this flap smoothing itself against the wall in consequence of the interior pressure, thus increasing the leakage path and leakage resistance so that air leakage is considerably reduced. A certain amount of leakage is not harmful since the interior pressure prevents the air from flowing from the outside inwards.
  • a dust-free working bench with a horizontal air flow, the main features of which have been described in U.S. Pat. Application Ser. No. 95,035 and Dutch Pat. Application /03 208.
  • Such a working bench is designated by reference numeral 15.
  • This bench comprises a separated working space 16 which is accessible from the front side, and, at the rear side, a blower-filter unit 17 is mounted which, as shown, is adapted to maintain a substantially horizontal dust-free air flow in this working space directed towards the front opening. Everything which is introduced in the closed space of this working bench must be moved against this air flow.
  • openings 18 are provided which, by means of a tube 19, are passed through the adjacent side wall of a unit 1. If this wall is pliable, an opening may be provided therein which may be clamped around the tube 19.
  • the opening 18 is preferably provided with self-closing closure means, for example a closure flap or the like disposed at the inside of the unit 1. If the pressure in the unit it higher than the pressure in the working bench, this flap is kept sufficiently closed. In the working space of this bench an object or the like to be transferred to the assembly will be stripped of its anti-dust cover, and is subsequently passed on. It is also possible to arrange in such a working bench dust-free working cupboards for certain nursing requisites. As shown it is possible to serve two identical separation units with one working bench 15.
  • Such a separated space can be composed of any number of units 1, and the columns 2 may be provided with rapidly fixable and detachable connecting means 'with which also a working bench 15 may be fastened to a column, as for example threaded pins to be inserted into holes of another column.
  • One of the units may, for example, be provided with a bed 20, whereas the other one may serve as a day room and may be provided with sanitary requisites.
  • the latter ones may thereby be equipped with bays for receiving the waste these bays being adapted to be removed from the outside in a sterile way. Since one starts from detached units, the size of the separated space can be adapted to the prevailing conditions. For a bedridden patient two units will suffice. For ambulant patients and in particular for children a larger or playing space may be provided if necessary.
  • Such a unit on wheels may then be connected to a stationary unit, whereupon the adjoining walls will be opened to transfer the patient to the stationary unit. Since in all the units the air flow moves in the same way and with the same intensity vertically downwards, this coupling of an additional unit does not disturb the air flows.
  • the disinfectant enters the adjoining room which may be inconvenient to the personnel present in this room. It is, therefore, preferred to carry out the disinfection in another way.
  • sprinkler lines 21 are arranged near the filter boxes 3 (FIG. 1), and the raised floor 8 is made hollow as is shown in FIG. 5.
  • the cavity 22 of the floor is then put into communication with a suction blower (not shown) which communicates in some suitable manner with the atmosphere.
  • this blower is started and the disinfectant is sprayed through the lines 21 into the respective unit, so that it may be sucked away at the bottom.
  • An important advantage of the assembly according to the invention is that all walls are equivalent, which con- ,siderably simplifies its erection in a space, and also the treatment and the nursing of the patient which should. be done from the outside.
  • Such units may, furthermore, be constructed in 'such dimensions that in cases of emergency they can be erected at once in any space, for instance around a bed of the like.
  • these units may be combined in any manner. It is for example also possible to couple two units containing a bed by means of an intermediate unit serving as an interchange unit for both'patients.
  • rods arranged at the outside of the pliable walls for limiting the outward deflection of said walls at such a height that persons having stuck their arms into the gloves may lean against said rods.
  • these rods prevent falling objects or the like from pushing the walls considerably inwards from the outside.
  • the auxiliary unit of FIG. 7 may be used, which comprises a frame 26 on castor wheels 27, supporting a blower 28, the inlet 29 of which is to be connected to the cavity 22 of the raised floor 25.
  • the outlet 30 of this blower opens into a space 30, the side wall of which is provided with an opening which is normally closed by a lid 31.
  • the upper side of this space 30 communicates with an absorbent box 32.
  • two perforated metal plates 33 are supported horizontally. Between these plates a bed of a suitable absorbent for the disinfectant, e.g. soda lime if the disinfectant is an acid, is arranged between two layers 35 of glass fibers. The air sucked in through the inlet 29 is blown through the bed 34, and the disinfectant is absorbed in this bed.
  • the lid 31 is opened and a tray 36 is slid into the space 30, which tray is connected to a bag 37 of plastic foil.
  • the lower layer 35 is pulled away, so that the absorbent may fall down through the perforations of the lower plate 33 in the tray 36 and the bag 37. The latter may then be closed and destroyed.
  • FIG. 8 shows a filter unit designed for a simplified assembly, which unit comprises a box 38 on castor wheels 39 and containing a blower 40, the outlet 41 of which is to be connected to one or more air supply boxes 3 of an assembly according to the preceding FIGS.
  • the inlet 42 communicates with a space 43 which, in the case of FIG. 8A, contains a filter 44, which space is provided with a suction duct 45 then communicating with the ambient air.
  • the space 44 of the same or a similar unit is provided with an absorbent bed 35 of the same kind as in FIG. 7, and then the duct 45 is connected to the cavity 22 of the isolation unit then being disinfected.
  • blowers 4 may be arranged in another room for reducing the noise level. In some cases it may be favorable to connect the cavity 22 with the inlet side of the blowers 4. Furthermore the beds 20 may be mounted on the columns 2 so that the floor may be more easily cleaned. Lamps may be arranged outside the units. Instead of gloves,bags may be fixed in one or more openings 7 for introducing X-ray apparatus or the like.
  • An assembly for making a dust-free space and isolating it from its surroundings for nursing a bed patient comprising a frame set upon the floor and including corner posts interconnected at their upper ends by a top closure including an air supply chamber having a perforated bottom wall,
  • At least one of the side walls being flexible and slidably suspended from the frame
  • At least one of the side walls being provided with air lock means permitting objects to be moved into and removed from the space without introducing dust bearing outside air into the space.
  • An assembly according to claim ll including a raised platform inside the dust-free space and sized slightly smaller than the enclosed floor area to define a peripheral space between the platform and the side I walls and leading to the gap between the side walls and flexible side wall is suspended for sliding movement along the side of the bed and is provided with glove means permitting a worker on the exterior of the enclosed space to manipulate objects within the space along the length of the bed.
  • An assembly according to claim 4 including spaced suction inlets to the raised platform and stop means preventing the side walls from being drawn against the inlets.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Biomedical Technology (AREA)
  • Engineering & Computer Science (AREA)
  • Surgery (AREA)
  • Pulmonology (AREA)
  • Accommodation For Nursing Or Treatment Tables (AREA)
  • Ventilation (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Electrostatic Separation (AREA)
  • Brushes (AREA)
US00140549A 1970-05-06 1971-05-05 Assembly for separating a dust-free part from a space, and method for disinfecting the same Expired - Lifetime US3782265A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7006660.A NL163422C (nl) 1970-05-06 1970-05-06 Samenstel voor het van een ruimte afscheiden van een stofvrij gedeelte.

Publications (1)

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US3782265A true US3782265A (en) 1974-01-01

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US00140549A Expired - Lifetime US3782265A (en) 1970-05-06 1971-05-05 Assembly for separating a dust-free part from a space, and method for disinfecting the same

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US (1) US3782265A (enrdf_load_stackoverflow)
JP (1) JPS5532966B1 (enrdf_load_stackoverflow)
BE (1) BE766774A (enrdf_load_stackoverflow)
CA (1) CA934211A (enrdf_load_stackoverflow)
DE (1) DE2122108C3 (enrdf_load_stackoverflow)
FR (1) FR2091226A5 (enrdf_load_stackoverflow)
GB (2) GB1351622A (enrdf_load_stackoverflow)
NL (1) NL163422C (enrdf_load_stackoverflow)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4608066A (en) * 1985-07-31 1986-08-26 Flanders Filters, Inc. Clean room adapted for variable work area configurations
US5259812A (en) * 1992-09-23 1993-11-09 Kleinsek Don A Clean room and clean room containment center
US5314377A (en) * 1992-10-05 1994-05-24 Airo Clean Inc. Clean air isolation enclosure
US5326316A (en) * 1991-04-17 1994-07-05 Matsushita Electric Industrial Co., Ltd. Coupling type clean space apparatus
US5641354A (en) * 1995-07-10 1997-06-24 Seh America, Inc. Puller cell
US5713791A (en) * 1995-04-06 1998-02-03 Motorola, Inc. Modular cleanroom conduit and method for its use
US5997399A (en) * 1997-05-09 1999-12-07 La Calhene, Inc. Isolation chamber air curtain apparatus
US20040074212A1 (en) * 2002-10-22 2004-04-22 Sanki Engineering Co., Ltd. Patient isolation unit
US20040221554A1 (en) * 2003-05-05 2004-11-11 Sanki Engineering Co., Ltd. Bioclean room unit
US20060003685A1 (en) * 2004-05-27 2006-01-05 Juergen Rothbauer Sterile filling arrangement
US20110217917A1 (en) * 2007-12-14 2011-09-08 Ge-Hitachi Nuclear Energy Americas Llc Air filtration and handling for nuclear reactor habitability area
ES2876051A1 (es) * 2020-05-08 2021-11-11 Univ Alcala Henares Procedimiento de proteccion para reducir el contagio interpersonal mediado por particulas o aerosoles respiratorios basado en un flujo de aire descendente
WO2023282742A1 (en) * 2021-07-08 2023-01-12 Surgicube Ip B.V. Surgical operation unit with local operation field

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE790708A (fr) * 1971-10-31 1973-04-30 Pielkenrood Vinitex Bv Samenstel voor het afscheiden van een gedeelte van een ruimte
FR2332028A2 (fr) * 1975-11-21 1977-06-17 Joubert Jack Perfectionnements aux moyens d'elimination de micro-organismes en suspension dans l'air de locaux fermes
BR5701235U (pt) * 1977-09-30 1979-04-24 S Driuzzo Dispositivo para higiene pessoal
DE3219301C2 (de) * 1982-05-22 1986-02-20 Avraham Zürich Fishman Zahn- und Zahnfleischmassagebürste
GB2151918B (en) * 1983-12-24 1986-12-10 David Llewellyn Maitland Price Dual purposes disposable shaving mug
DE8805774U1 (de) * 1988-04-30 1988-06-23 Babcock-BSH AG vormals Büttner-Schilde-Haas AG, 4150 Krefeld Tunnelmodul zum Aufbau eines Reinraumes in Laminar-Flow-Technik
DE4219125C2 (de) * 1992-06-11 1996-01-11 Meissner & Wurst Vorrichtung zur Erzeugung von Reinraumbereichen
GB2328149A (en) * 1997-08-15 1999-02-17 Julie Francis Toothbrushes

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2502263A (en) * 1948-03-09 1950-03-28 Clifford A Lewis Air sterilizing and dehydrating apparatus for oxygen tents
US2677253A (en) * 1951-10-11 1954-05-04 Lee Randolph Air cooling oxygen circulating device
GB763156A (en) * 1953-12-24 1956-12-12 Claude Charles Frederic Cuvier Improvements in apparatus for cooling sick persons
US2912918A (en) * 1957-06-25 1959-11-17 William H Mead Blast room with uniform down-draft ventilation
US3294480A (en) * 1959-06-01 1966-12-27 Union Carbide Corp System for the prevention of the spread of infectious disease by airborne microorganisms
US3367257A (en) * 1965-03-23 1968-02-06 Pyle National Co Air control for white room
US3601031A (en) * 1969-09-22 1971-08-24 Litton Systems Inc Patient isolator room
US3602212A (en) * 1968-05-02 1971-08-31 Howorth & Co Ltd James Surgical operating theatre with sterile air admitting means
US3657991A (en) * 1970-05-18 1972-04-25 Zero Manufacturing Co Floor for blast room with uniform down-draft ventilation

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4843676U (enrdf_load_stackoverflow) * 1971-09-24 1973-06-06

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2502263A (en) * 1948-03-09 1950-03-28 Clifford A Lewis Air sterilizing and dehydrating apparatus for oxygen tents
US2677253A (en) * 1951-10-11 1954-05-04 Lee Randolph Air cooling oxygen circulating device
GB763156A (en) * 1953-12-24 1956-12-12 Claude Charles Frederic Cuvier Improvements in apparatus for cooling sick persons
US2912918A (en) * 1957-06-25 1959-11-17 William H Mead Blast room with uniform down-draft ventilation
US3294480A (en) * 1959-06-01 1966-12-27 Union Carbide Corp System for the prevention of the spread of infectious disease by airborne microorganisms
US3367257A (en) * 1965-03-23 1968-02-06 Pyle National Co Air control for white room
US3602212A (en) * 1968-05-02 1971-08-31 Howorth & Co Ltd James Surgical operating theatre with sterile air admitting means
US3601031A (en) * 1969-09-22 1971-08-24 Litton Systems Inc Patient isolator room
US3657991A (en) * 1970-05-18 1972-04-25 Zero Manufacturing Co Floor for blast room with uniform down-draft ventilation

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4608066A (en) * 1985-07-31 1986-08-26 Flanders Filters, Inc. Clean room adapted for variable work area configurations
US5326316A (en) * 1991-04-17 1994-07-05 Matsushita Electric Industrial Co., Ltd. Coupling type clean space apparatus
US5259812A (en) * 1992-09-23 1993-11-09 Kleinsek Don A Clean room and clean room containment center
WO1994006574A1 (en) * 1992-09-23 1994-03-31 Kleinsek Don A Clean room and clean room containment center
US5314377A (en) * 1992-10-05 1994-05-24 Airo Clean Inc. Clean air isolation enclosure
US5713791A (en) * 1995-04-06 1998-02-03 Motorola, Inc. Modular cleanroom conduit and method for its use
US5641354A (en) * 1995-07-10 1997-06-24 Seh America, Inc. Puller cell
US5702522A (en) * 1995-07-10 1997-12-30 Seh America, Inc. Method of operating a growing hall containing puller cells
US5749967A (en) * 1995-07-10 1998-05-12 Seh America, Inc. Puller cell
US5997399A (en) * 1997-05-09 1999-12-07 La Calhene, Inc. Isolation chamber air curtain apparatus
US20040074212A1 (en) * 2002-10-22 2004-04-22 Sanki Engineering Co., Ltd. Patient isolation unit
US6966937B2 (en) * 2002-10-22 2005-11-22 Sanki Engineering Co., Ltd. Patient isolation unit
US20040221554A1 (en) * 2003-05-05 2004-11-11 Sanki Engineering Co., Ltd. Bioclean room unit
US6869458B2 (en) * 2003-05-05 2005-03-22 Sanki Engineering Co., Ltd. Bioclean room unit
US20060003685A1 (en) * 2004-05-27 2006-01-05 Juergen Rothbauer Sterile filling arrangement
US7717774B2 (en) * 2004-05-27 2010-05-18 Inova Pharma Systems Gmbh Sterile filling arrangement
US20110217917A1 (en) * 2007-12-14 2011-09-08 Ge-Hitachi Nuclear Energy Americas Llc Air filtration and handling for nuclear reactor habitability area
US9435552B2 (en) * 2007-12-14 2016-09-06 Ge-Hitachi Nuclear Energy Americas Llc Air filtration and handling for nuclear reactor habitability area
ES2876051A1 (es) * 2020-05-08 2021-11-11 Univ Alcala Henares Procedimiento de proteccion para reducir el contagio interpersonal mediado por particulas o aerosoles respiratorios basado en un flujo de aire descendente
WO2023282742A1 (en) * 2021-07-08 2023-01-12 Surgicube Ip B.V. Surgical operation unit with local operation field
NL2028657B1 (en) * 2021-07-08 2023-01-13 Surgicube Ip B V Surgical operation unit with local operation field

Also Published As

Publication number Publication date
NL163422B (nl) 1980-04-15
GB1355171A (en) 1974-06-05
JPS5532966B1 (enrdf_load_stackoverflow) 1980-08-28
NL163422C (nl) 1980-09-15
NL7006660A (enrdf_load_stackoverflow) 1971-11-09
DE2122108A1 (de) 1971-11-18
GB1351622A (en) 1974-05-01
CA934211A (en) 1973-09-25
DE2122108B2 (de) 1980-02-07
FR2091226A5 (enrdf_load_stackoverflow) 1972-01-14
BE766774A (nl) 1971-10-01
DE2122108C3 (de) 1980-09-25

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