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WO1991001692A1 - Dispositif utilise dans la decharge de fumees provenant d'un site d'operation - Google Patents

Dispositif utilise dans la decharge de fumees provenant d'un site d'operation Download PDF

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Publication number
WO1991001692A1
WO1991001692A1 PCT/SE1990/000523 SE9000523W WO9101692A1 WO 1991001692 A1 WO1991001692 A1 WO 1991001692A1 SE 9000523 W SE9000523 W SE 9000523W WO 9101692 A1 WO9101692 A1 WO 9101692A1
Authority
WO
WIPO (PCT)
Prior art keywords
chamber
opening
fumes
operating site
working
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.)
Ceased
Application number
PCT/SE1990/000523
Other languages
English (en)
Inventor
Fredrik Petersson
Lennart Johnsson
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of WO1991001692A1 publication Critical patent/WO1991001692A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
    • B08B15/04—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area from a small area, e.g. a tool
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2218/00—Details of surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2218/001—Details of surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body having means for irrigation and/or aspiration of substances to and/or from the surgical site
    • A61B2218/007—Aspiration
    • A61B2218/008—Aspiration for smoke evacuation

Definitions

  • the present invention relates to a device for use in the discharge of fumes from an operating site in fume- inducing surgery, e.g. laser surgery and diathermy. More precisely, the invention concerns a device enabling, in such an operation site, efficient local suction of fumes without any leakage to the ambient atmosphere.
  • SU 1,179,981 discloses a device for local suction in laser surgery. This device comprises a circular, annular, upwardly concave plate, whose lower peripheral edge defines a bottom opening to be placed over the operating site, and whose other peripheral edge defines an opposing, larger working opening providing access to the operating site through the bottom opening.
  • the annular concave plate, the bottom opening and the working opening together define a kind of frustoconical chamber into which the fumes are initially conducted from the operating site through the bottom opening.
  • the annular, concave plate is rigidly connected to a handle formed with an elongate exhaust duct, whose one end opens near to the chamber, and whose other end is adapted to be connected to a negative pressure for sucking off fumes conducted into the chamber from the operating site. More precisely, the first end of the exhaust duct formed in the handle opens at a point outside the chamber and immediately above the working opening. This means that the fumes in the chamber must leave through the working opening in order to reach the mouth of the exhaust duct.
  • the distinctive feature of this device is that the annular plate is made of metal, and that its concave upper side facing away from the operating site is blackened to prevent reflection of laser radia- tion.
  • the device disclosed in SU 1,179,981 is, for the following reasons, not suited for practical use.
  • the fumes generated in laser surgery do not behave in the same way as, for instance, the smoke from a flame, but leave the operating site as quite heavy puffs.
  • laser radiation normally used in laser surgery is comparatively rich in energy, and that the energy thus supplied to the operating site brings about almost instantaneous heating and boiling of cell water.
  • the device described in SU 1,179,981 is no doubt incapable of efficiently sucking off such puffs, of which at least some in all probability will pass by the inlet opening of the exhaust duct located at the upper side of the working opening, and ascend towards the theatre personnel standing beside the operating site.
  • an extremely powerful air flow through the exhaust duct may to some extent reduce this fume leakage, but it would instead entail the above-mentioned incon- veniences of substantial air flows, i.e. disturbance of the ventilating system, unpleasant sounds, and the need of expensive equipment.
  • the inventive device comprises a chamber which is defined by a body and has a bottom opening to be placed over the operating site for conducting fumes emitted therefrom into the chamber, and a working opening substantially opposite to the bottom opening for providing access to the operating site through the chamber and the bottom opening, and an exhaust duct having a first end opening in the vicinity of the chamber, and a second end adapted to be connected to a negative pressure for sucking off fumes conducted into the chamber.
  • the inventive device is characterised by one or more air passages extending from the outside of said body and separate from the bottom and working openings, said air passages and said first end of the exhaust duct opening in the chamber between the bottom opening and the working opening at two opposite sides of the chamber.
  • two part chambers namely a first part chamber between the bottom opening and the air lid and a second part chamber between the air lid and the working opening, will form when the negative pressure is applied.
  • the fumes emitted from the operating site are prevented from rising into the second part chamber and out through the working opening, and will instead be effectively retained under the air lid and sucked off from the first part chamber through the exhaust duct.
  • the inventive device further has the advantage of requiring only a very small air flow through the exhaust duct, e.g. 20-301/min, to be compared with the several cubic metres per minute in prior art air exhaust devices.
  • a preferred embodiment of the invention comprises a plurality of-.separate air passages which, as a row of substantially evenly distributed separate inlet openings, open in the chamber, said row being extended at least circumferentially relative to a centre line passing through the chamber and interconnecting the bottom opening and the working opening.
  • a correspond ⁇ ing number of laminar air flows are produced, passing from the air inlet openings to the end of the exhaust duct opening in the chamber.
  • the air flow/air flows that are to form the air lid must be substantially laminar, since every turbulent flow inside the chamber entails the risk of fumes leaking out through the working opening.
  • the row of inlet openings is inclined in such a manner that a first end thereof is offset towards the bottom opening, and a second end thereof is offset towards the working opening.
  • the body for defining the chamber and the bottom and working openings thereof, comprises a tubular body, e.g. a cylindrical circumferential wall, open at both ends.
  • the separate air passages may consist of a corresponding number of peripheral through holes in the cylindrical circumferential wall.
  • the size of the chamber can be varied depending on the work to be performed.
  • the chamber may have a height of about 30 mm and a diameter of about 40 mm.
  • substantial deviations from these dimensions are perfectly conceivable.
  • a particu ⁇ larly preferred embodiment of the inventive device compri ⁇ ses a panel which is integrated with the body and projects therefrom at the side of the chamber where the first end of the exhaust duct opens, said panel covering, at this side of the chamber, a limited part of the cross-sectional area of said chamber.
  • the panel is located near to or in the same plane as the working opening.
  • the air flowing from outside through the working opening will descend along the sides of the chamber at the areas not covered by the panel.
  • the panel prevents such outside air from descending and turn ⁇ ing at the operating site to immediately leave the chamber through the working opening. This in turn prevents turbu- lence in the chamber.
  • Fig. 1 is a perspective view of an inventive device as seen obliquely from above;
  • Fig. 2 is a top plan view of the device in Fig. 1;
  • Fig. 3 is a side view of the device in Fig. 1 along the line III-III in Fig. 2;
  • Fig. 4 is a side view of the device in Fig. 1 along the line IV-IV in Fig. 2;
  • Fig. 5 is a schematic vertical section showing the device in Fig. 1 placed over an operating site, and illustrating the basic mode of operation of this device.
  • the inventive device generally designated 1, comprises a chamber 3 which is defined by a body 2 and has a bottom opening 4 and a working opening 5.
  • the body has the form of a straight cylinder which is open at both ends and whose circumferential wall defines the chamber 3.
  • a connecting nipple 6 is integrally connected to the body 2 from which it projects about midway between the bottom opening 4 and the working opening 5.
  • the connecting nipple 6 forms an exhaust duct 7 (see Fig. 5) between a first end 8 (see Fig. 5) opening in the chamber 3, and a second, free end 9 adapted to be connected to a negative pressure for sucking off fumes conducted into the chamber.
  • holes 10, 11, 12, 13 in the circumferential wall 2 are formed substantially diametrically opposite to the mouth of the exhaust duct 7 in the chamber 3.
  • the holes 10-13 are circumferentially evenly distributed along a straight line which is slightly inclined relative to the diametrical plane. More precise- ly, the degree of inclination is such that the distance A indicated in Fig. 3 is approximately equal to the distance B indicated in Fig. 4, which represents the diameter of the exhaust duct 7.
  • the device 1 comprises a panel 14 which is shaped as the segment of a circle and which, in this embodiment, is formed integral with the circumferential wall or body 2.
  • the panel 14 is located in the plane of the working opening 2 above the duct end opening 8 in the chamber 3.
  • the device 1 may be equipped with sealing means (not shown) at the lower edge of the circumferential wall to provide efficient sealing between the circumferen ⁇ tial wall 2 and an operating site, when the device is being used.
  • sealing means not shown
  • a skin portion is designated 15, and an operating site therein is designated 16.
  • the device 1 with the bottom opening 4 is applied over the skin portion 15, either directly or indirectly via sealing means and/or surgical drapes or the like.
  • Fig. 5 schematically illustrates a surgical instrument 17 inserted through the working opening 5 to emit, at its lower end 18, laser radiation 19 towards the operating site 16. Owing to the laser radiation applied, fumes 20 are emitted in known manner from the operating site.
  • the free end 9 of the exhaust duct 7 is connected to a negative pressure, produced preferably by means of suction pumps of the type which is normally used in operating theatres for sucking off residual tissue or the like and which can produce an air flow sufficient to make the inventive device work.
  • a negative pressure By the application of a negative pressure, the fumes 20 from the operating site will be immediately sucked off from the chamber 3, as schematically illustrated by an arrow 21. However, all the fumes 20 will not take this "direct" route 21 since they are generated, as mentioned above, in the form of upwardly directed puffs.
  • the holes 10-13 are slightly inclined, which makes thicker the air lid formed by the laminar flows 10'-13'.
  • the distance A indicated in Fig. 3 i.e. the height of the circumferential band within which the holes 10-13 are located, roughly equals the diameter B of the exhaust duct 7.
  • other ratios between A and B are perfectly conceivable.
  • a dashed, U-shaped arrow 22 an air flow entering from outside through the working opening 5 will not be able to turn and leave the chamber 3 directly, thus producing turbulence in the chamber with the ensuing leakage of fumes.
  • the panel 14 effectively prevents any formation of turbulence without, however, preventing the instrument 17 from being inserted through the working opening 5, or obstructing the view through this opening.
  • a dashed arrow 23 in Fig. 5 illustrates how the air flow entering the working opening 5 is also inter ⁇ cepted by the laminar air flows 10'-13' to be directly discharged from the chamber.
  • air passages 10-13 other than through holes in a circumferential wall may be provided.
  • a possible option is to arrange a corresponding number of narrow tubes whose one end opens adjacent to the working opening within the chamber to take air therefrom, and whose other end opens at a position corresponding to a position of a hole 10-13 shown in Figs 1-5.
  • the separate air passages may be formed otherwise, e.g. as slots.

Landscapes

  • Laser Surgery Devices (AREA)
  • Prevention Of Fouling (AREA)

Abstract

Un site (1) destiné à être utilisé dans la décharge de fumées (20) provenant d'un site d'opération (16), par exemple en chirurgie laser (17, 19), comprend une chambre (3) définie par un corps (2) et comportant un orifice inférieur (4) à placer sur le site d'opération (16) afin d'évacuer les fumées émises à partir de ce dernier dans ladite chambre (3), ainsi qu'un orifice de travail (5) situé à l'opposé de l'orifice inférieur (4), destiné à assurer l'accès au site d'opération (16) par l'intermédiaire de ladite chambre (3) et dudit orifice inférieur (4). Une première extrémité (8) d'un conduit d'évacuation (7) s'ouvre à proximité de ladite chambre (3), et une seconde extrémité (9) dudit conduit d'évacuation est adaptée pour être reliée à une pression négative destinée à aspirer les fumées (20) conduites dans ladite chambre (3). Un ou plusieurs passages d'air (10 à 13) s'étendent de l'extérieur dudit corps (2), et sont séparés des orifices inférieurs et de travail (4, 5). Ces passages d'air séparés (10 à 13), ainsi que la première extrémité (8) dudit conduit d'évacuation (7), débouchent dans ladite chambre (3) entre l'orifice inférieur (4) et l'orifice de travail (5), au niveau de deux cotés opposés de ladite chambre (3). Ainsi, un couvercle d'écoulements laminaires d'air (10', 11', 12', 13') est formé dans ladite chambre (3), empêchant la fuite de fumées par l'intermédiaire de l'orifice de travail (5).
PCT/SE1990/000523 1989-08-10 1990-08-10 Dispositif utilise dans la decharge de fumees provenant d'un site d'operation Ceased WO1991001692A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8902709A SE463289B (sv) 1989-08-10 1989-08-10 Anordning foer anvaendning vid avlaegsning av roek fraan ett operationsstaelle
SE8902709-8 1989-08-10

Publications (1)

Publication Number Publication Date
WO1991001692A1 true WO1991001692A1 (fr) 1991-02-21

Family

ID=20376656

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1990/000523 Ceased WO1991001692A1 (fr) 1989-08-10 1990-08-10 Dispositif utilise dans la decharge de fumees provenant d'un site d'operation

Country Status (3)

Country Link
AU (1) AU6270490A (fr)
SE (1) SE463289B (fr)
WO (1) WO1991001692A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0585373A4 (fr) * 1991-04-26 1994-03-24 Sorenson Lab Inc Sonde chirurgicale et eliminateur de fumee.
FR2707154A1 (fr) * 1993-07-08 1995-01-13 Satelec Sa Bistouri à ultrasons.
WO1997023167A1 (fr) * 1995-12-26 1997-07-03 Acuderm Inc. Appareil d'evacuation des fumees chirurgicales
DE19604955A1 (de) * 1996-02-10 1997-08-14 Stefan Dipl Ing Ostermann Verfahren zur Vermeidung der Sprühkontamination bei medizinischen Eingriffen sowie in diesem verwendbare Vorrichtung
WO2002076643A1 (fr) * 2001-03-27 2002-10-03 Markku Vanhala Procede et dispositif d'elimination des impuretes
CN111265943A (zh) * 2020-03-20 2020-06-12 吴瑾 一种前置医源性烟尘过滤器

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4071338A (en) * 1976-01-27 1978-01-31 Physical Systems, Inc. Air exhausted mixing bowl
DE2903842A1 (de) * 1979-01-30 1980-07-31 Ziad Dipl Ing Nouri Abschirmung zum verhindern des eindringens kontaminierter luft in schutzzonen
US4296523A (en) * 1980-03-31 1981-10-27 Chevron Research Company Dust-collection head for a dust collection system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4071338A (en) * 1976-01-27 1978-01-31 Physical Systems, Inc. Air exhausted mixing bowl
DE2903842A1 (de) * 1979-01-30 1980-07-31 Ziad Dipl Ing Nouri Abschirmung zum verhindern des eindringens kontaminierter luft in schutzzonen
US4296523A (en) * 1980-03-31 1981-10-27 Chevron Research Company Dust-collection head for a dust collection system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DERWENT'S ABSTRACT, No. 86- 99 308/15; & SU,A,1 179 981, publ week 8615, (SMOLENSK MEDIC INST). *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0585373A4 (fr) * 1991-04-26 1994-03-24 Sorenson Lab Inc Sonde chirurgicale et eliminateur de fumee.
FR2707154A1 (fr) * 1993-07-08 1995-01-13 Satelec Sa Bistouri à ultrasons.
WO1995001754A1 (fr) * 1993-07-08 1995-01-19 Satelec S.A. Bistouri a ultrasons
US5702360A (en) * 1993-07-08 1997-12-30 Satelec S.A. Ultrasonic surgical knife
WO1997023167A1 (fr) * 1995-12-26 1997-07-03 Acuderm Inc. Appareil d'evacuation des fumees chirurgicales
DE19604955A1 (de) * 1996-02-10 1997-08-14 Stefan Dipl Ing Ostermann Verfahren zur Vermeidung der Sprühkontamination bei medizinischen Eingriffen sowie in diesem verwendbare Vorrichtung
WO2002076643A1 (fr) * 2001-03-27 2002-10-03 Markku Vanhala Procede et dispositif d'elimination des impuretes
CN111265943A (zh) * 2020-03-20 2020-06-12 吴瑾 一种前置医源性烟尘过滤器

Also Published As

Publication number Publication date
AU6270490A (en) 1991-03-11
SE463289B (sv) 1990-11-05
SE8902709D0 (sv) 1989-08-10

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