Key information

Title
Suction device
Application number
20240639
Case type
National
Status
19.01.2026 Patent meddelt (B1)
Filed
14.06.2024
Effective date
14.06.2024
Publicly available
15.12.2025
Next annual fee due
30.06.2026
Applicant
ØSI ALLSERVICE AS (NO)
Owner
ØSI ALLSERVICE AS (NO)
Inventor
Terje Plukkerud (NO)
Agent
ACAPO ONSAGERS AS (NO)
Granted
19.01.2026
Patent number
349439
Expiry date
14.06.2044

Abstract and drawing

Disclaimer: This text has been machine-scanned and may contain errors – please refer to "Publications" for legally binding content.
A suction device for suctioning substances, comprises a vacuum device, a suction nozzle having a first tube and a second tube, each of the tubes being open at a tip of the suction nozzle, wherein a distal end of the first tube is arranged inside a distal end of the second tube, such that the tubes enclose an annular gap at their distal ends at the tip of the suction nozzle, wherein the first tube is coupled with the vacuum device, wherein the annular gap is coupled with an air source, optionally a pressurized air source, and wherein the suction device is configured to simultaneously eject air through the annular gap and suction substances that at least partially entrained by the ejected air through the first tube at the tip of the suction nozzle.

Publications

B1A1
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Documents

 Expand Download files (24)
Date
 Date Doc. No. Process Case number In/Out Journal description To/from
 02.11.2026 12-01 Saksbehandling 20240639(349439) UT PT Påminnelse om ikke betalt årsavgift (3329) (PT20240639) ACAPO ONSAGERS AS
 02.05.2026 11-01 Saksbehandling 20240639(349439) UT PT Varsel om betaling av første årsavgift (3317) (PT20240639) ACAPO ONSAGERS AS
 21.01.2026 10-01 Saksbehandling 20240639(349439) UT PT Registreringsbrev nasjonal patent (15) (PT20240639)
29.10.2025 09-01 Saksbehandling 20240639 UT PT Meddelelse om patent ACAPO ONSAGERS AS
 06.10.2025 08-06 Saksbehandling 20240639 INN P29620NO00 Specification for meddelelse - wc ACAPO ONSAGERS AS
 06.10.2025 08-05 Saksbehandling 20240639 INN P29620NO00 Specification for meddelelse cc ACAPO ONSAGERS AS
 06.10.2025 08-04 Saksbehandling 20240639 INN P29620NO00 Brev til NIPO - utsatt meddelelse ACAPO ONSAGERS AS
 06.10.2025 08-03 Saksbehandling 20240639 INN P29620NO00 Besvarelse ACAPO ONSAGERS AS
 06.10.2025 08-02 Saksbehandling 20240639 INN P29520NO00 Norsk oversettelse av krav ACAPO ONSAGERS AS
 06.10.2025 08-01 Saksbehandling 20240639 INN Korrespondanse (Hovedbrev inn) ACAPO ONSAGERS AS
 04.07.2025 07-01 Saksbehandling 20240639 UT Realitet patent ACAPO ONSAGERS AS
 27.06.2025 06-04 Saksbehandling 20240639 INN P29620NO00 Reply to Official Action ACAPO ONSAGERS AS
 27.06.2025 06-03 Saksbehandling 20240639 INN P29620NO00 Amended claims wc ACAPO ONSAGERS AS
 27.06.2025 06-02 Saksbehandling 20240639 INN P29620NO00 Amended claims clean ACAPO ONSAGERS AS
 27.06.2025 06-01 Saksbehandling 20240639 INN Korrespondanse (Hovedbrev inn) ACAPO ONSAGERS AS
 13.01.2025 05-02 Saksbehandling 20240639 UT PT report 11:14:56
13.01.2025 05-01 Saksbehandling 20240639 UT Realitet patent ACAPO ONSAGERS AS
 01.07.2024 04-02 Saksbehandling 20240639 INN P29620NO00_Signed GPOA_NO_ØSI Allservice AS ACAPO ONSAGERS AS
 01.07.2024 04-01 Saksbehandling 20240639 INN Korrespondanse (Hovedbrev inn) ACAPO ONSAGERS AS
 17.06.2024 03-01 Saksbehandling 20240639 UT Formalia 1 ACAPO ONSAGERS AS
 17.06.2024 02-01 Saksbehandling 20240639 UT Informasjon til oppfinner Terje Plukkerud
 14.06.2024 01-03 Saksbehandling 20240639 INN P29620NO00_Specification_READY FOR FILING ACAPO ONSAGERS AS
 14.06.2024 01-02 Saksbehandling 20240639 INN P29620NO00_final_drawings ACAPO ONSAGERS AS
 14.06.2024 01-01 Saksbehandling 20240639 INN Søknadsskjema Patent ACAPO ONSAGERS AS

Description, claims and drawings

Disclaimer: This text has been machine-scanned and may contain errors – please refer to "Publications" for legally binding content. Description
3494391Suction deviceTechnical fieldThe invention relates to a suction device for suctioning substances.5Background of the inventionSuction devices are known, which extract sludge and other materials from the seabed or from regions underneath of or within fish cages submerged in the sea. By suctioning the sludge, large quantities of water are suctioned, too, and need to be 10 processed before feeding it back into the sea.US 2008/0085163 A1 describes an earth reduction tool configured to connect to a vacuum source of an earth reduction system for moving material comprising an elongated body defining a first end for connecting to the vacuum source, an opposite second end, and an elongated vacuum passage extending through the 15 elongated body between the first and the second ends. The tool also has an elongated air passage extending from the body second end to at least a point intermediate the elongated body first and second ends, the air passage having an open first end and an open second end proximate the elongated body second end that is in fluid communication with the elongated body vacuum passage second end, 20 wherein when the vacuum source pulls a vacuum through the elongated body vacuum passage, air is drawn up into the vacuum passage from the air passage open second end.DE 3245821 A1 describes an apparatus for drawing off sand, mud, earth and the like with the use of a gas flow, in particular an air flow, with a suction pipe, a 25 suction fan and a separating device for separating the drawn-off material from the gas or air, is distinguished by the fact that it has a compressed-gas source, in particular a pressure blower, a line for directing the compressed gas or the compressed air to the suction opening of the suction pipe, and devices which are open at the bottom and surround the suction opening of the suction pipe and the 30 discharge opening for the compressed gas in a dome shape. Even materials located underwater, such as sand, mud and the like, can be drawn off with the apparatus without water also being drawn in to a significant degree at the same time.JP S5562668 U describes a side wall of a nozzle which sucks mud, which is formed into a double wall, compressed air is sent to one space partitioned by double wall, 35 the other space is sucked by a vacuum pump, Nozzle for mud from a structure that makes it easy to eliminate mud with low moisture content. 3494392Other suction devices have long been integral to surgical procedures, facilitating the removal of fluids and fragmented tissue. It is known to combine high-pressure fluid jets with vacuum aspiration to emulsify and extract targeted tissue. These suction devices may be provided in the form of handheld devices, designed for precision 5 and minimal invasiveness. They may be used for delicate surgeries, such as cataract removal, where maintaining the integrity of surrounding structures is important.Summary of the inventionIt is an object of the invention to propose an improved suction device that is capable 10 of removing, loosening, cutting, disintegrating and/or emulsifying substances and of simultaneously suctioning substances effectively and efficiently for various technical applications.The object of the invention is met by a suction device having the features of independent claim 1. Advantageous embodiments and further improvements may be 15 gathered from the dependent claims and the following description.A suction device for suctioning substances is proposed, the device comprising a vacuum device, a suction nozzle having a first tube and a second tube, each of the tubes being open at a tip of the suction nozzle, wherein a distal end of the first tube is arranged inside a distal end of the second tube, such that the tubes enclose an 20 annular gap at their distal ends at the tip of the suction nozzle, wherein the first tube is coupled with the vacuum device, wherein the annular gap is coupled with a pressurized air source, and wherein the suction device is configured to simultaneously eject air through the annular gap and suction substances that at least partially entrained by the ejected air through the first tube at the tip of the suction 25 nozzle. The suction device comprises an adjustable air valve arranged between the annular gap and the pressurized air source for controlling an air flow through the annular gapThe suction device is capable of suctioning substances, in particular, solids or soft substances, such as body tissue. The ejected air supports the removing, loosening, 30 cutting, disintegrating and/or emulsifying. As will be explained further below, different substances may lead to different designs of the suction device. In the following, the features of the suction device will be explained in more detail.The pressurized air source is a device that is configured to supply air at an elevated pressure. By the elevated pressure, air can be conveyed to the suction nozzle, i.e., 35 into the annular gap, to be ejected therefrom. The pressurized air source may comprise a blower, such as a centrifugal blower, or a compressor, such as a positive displacement compressor. The pressurized air source may preferably be configured 3494393to continuously operate to provide a continuous flow of pressurized air. It may comprise a buffer tank, in which a certain volume of air is stored with a certain overpressure, while a blower or a compressor intermittently operates to maintain or increase the overpressure in the buffer tank. However, solutions without buffer tank 5 are not ruled out herein. The size and working principle may be chosen depending on the planned application, the operation duration and other requirements. The suction device may also operate without use of a pressurized air source, i.e. by suction of ambient air as an air source into the annular gap by use of the vacuum device.10 The vacuum device is configured to create an underpressure that allows to suction a fluid and anything that is entrained therein. The vacuum device could be formed by a blower, such as a radial blower with a suction side creating the underpressure. The blower may preferably be operated by an electric motor, but other drives are not ruled out herein. In marine applications, for example, also combustion engines may 15 operate the vacuum device.Consequently, the suction device according to the invention uses a combination of an air source and a vacuum device for delivering a certain airflow and for suctioning substances, which may include fluid and particles entrained therein. For applying the combination of airflow and suctioning, the suction nozzle is used.20 The suction nozzle has a tip, which is the part that will face the substances or come into contact with the substances to be suctioned. The distal ends of the first tube and of the second tube form the tip. The second tube may have a hollow cylindrical shape at the distal end. The first tube has an outer diameter that is smaller than an inner diameter of the second tube. The first tube is arranged inside the second tube 25 at the tip of the suction nozzle. This creates the annular gap that is arranged between the first tube and the second tube. Consequently, two independent flow channels are created in the suction nozzle, wherein the first tube is coupled with the vacuum device to provide a suctioning at the distal end of the first tube and wherein the annular gap is coupled with the air source to eject air through the annular gap 30 towards the target.The second tube may comprise a radial cutout, through which the first tube is fed from inside the second tube to the exterior of the second tube. The cutout shall be sealed to avoid a leakage of air. The second tube may be bent or kinked, and the radial cutout may be provided at the bend or kink. The first tube may be straight. 35 However, the second tube may be straight, while the first tube is bent or kinked.The first tube and the second tube may have the same wall thicknesses. Optionally, depending on the size of the individual tubes, their wall thicknesses may differ. The first tube should be sufficiently rigid to not collapse due to the underpressure inside the first tube and the overpressure inside the second tube that surrounds it. 3494394The term “coupled” is to be understood as being connected, while not excluding additional elements between the respective connected elements. For example, it is possible to place a valve between the pressurized air source and the annular gap, or a valve between the first tube and the vacuum device.5 By ejecting air, a high-pressure jet of air is directed to a target to cut, remove, disintegrate and/or loosen up material. When suctioning at the same time, particles or soft substances entrained in air or another fluid that is present in the vicinity of the tip can be suctioned into the first tube. Depending on how the suction nozzle is connected to the vacuum device, the suctioned substances will flow towards the 10 vacuum device and may enter a particle separator, a collecting tank or another similar component.The first tube and the second tube may be concentrically arranged. Thus, the annular gap has a constant width along its circumferential extension around the first tube. The suctioning strength is the same at any point of the annular gap at the tip of 15 the suction nozzle.The distal end of the first tube and the distal end of the second tube may be flush with each other. In this case, neither the first tube nor the second tube protrudes over the other one of the first tube or the second tube. The air flow that exits the annular gap will be deflected about 180° to enter the first tube. If both the first tube 20 and the second tube are flush with each other, the whole deflected flow from the annular gap into the first tube impinges onto the target substance in the form of a vortex field to optimize the removing, loosening, cutting, disintegrating and/or emulsifying.The distal end of at least one of the first pipe and the second pipe comprises an 25 external bevel. The bevel may create a blunt edge or a sharp edge, depending on the requirements for operating the suction device. For example, if the suction device is integrated into a medical apparatus, sharp edges may be useful for supporting the effect of the ejected air flow by manually acting on the target. If the suction device is intended for suctioning mud or sludge, e.g. in a fish farm, blunt edges may be 30 preferred to avoid damages of components that belong to a fish cage or the like. In both cases, the outer edge of at least one of the pipes, and preferably at least of the second pipe, may be chamfered.The annular gap may be open without interruptions along its complete circumferential extension around the first tube. The loosening, cutting or removing 35 of substances at the tip of the suction device can be improved if the annular gap does not have any interruptions. Aligning the first tube inside the second tube may be done by flat ribs or flanges further inwards, i.e. away from the distal ends inside the annular gap. 3494395The suction device may comprise an adjustable air valve arranged between the annular gap and the pressurized air source for controlling an air flow through the annular gap. The user of the suction device may alter the flow of air through the annular gap by adjusting the adjustable air valve, i.e. by increasing or decreasing 5 the air mass flow by opening or closing the respective flow-through cross-section.As an alternative, the user may select or enter a desired volume flow, for example by selecting a level of a number of available levels, in a control unit.The suction device may comprise a collecting tank arranged between the vacuum device and the first tube for collecting the suctioned substances. Suctioned10 substances enter the collecting tank and are accumulated therein until the collecting tank is emptied. The collecting tank may comprise a volume that is sufficient to guarantee a prolonged operation of the suction device, depending on the area of application of the suction device. The collecting tank may be transparent or translucent to allow a user to easily recognize the fill level of the collecting tank. If 15 this is not possible, the collecting tank may instead comprise at least one window made of a translucent or transparent material. In a further alternative, sensors may be used to detect the fill level. The vacuum device may be connected to a suction port of the vacuum tank, while the first tube may be connected to an inlet port of the collecting tank. The suction port and the inlet port may be arranged at two opposite 20 or diametrically opposite sides of the collecting tank. Substances that are suctioned into the first tube may thus settle in the collecting tank and do not flow directly into the suction port.The suction device may comprise a vacuum adjustment valve connected to the collecting tank. The vacuum adjustment valve may be connected to the collecting 25 tank and allows to adjust the underpressure inside the collecting tank. It may comprise a vacuum gauge which lets the user recognize the momentary underpressure in the collecting tank.The suction device may comprise a floating ball valve arranged inside the tank and connected to the vacuum device. The floating ball valve comprises a ball, which 30 will only flow up when the ball is in contact with water or other liquids or particles inside the collecting tank. When the collecting tank is full, the ball valve shall close and interrupt the connection between the vacuum device and the collecting tank. The floating ball valve may be arranged in a top section of the collecting tank and may be directly connected to the vacuum device.35 The vacuum tank may comprise a filtering grate dividing the collecting tank into a first chamber and a second chamber. The filtering grate divides the particles from a fluid, in which the particles are entrained. The grate allows a simple removal of large particles from the collecting tank and also protects the vacuum device, the optional floating ball valve and other devices installed in fluid communication with 3494396the interior of the collecting tank from contamination. The grate may be arranged at an inclined angle inside the collecting tank. The filtering grate may be made from a sheet material having holes. As an alternative or in addition thereto it may comprise a mesh or a web or a net or a combination thereof.5 The vacuum device and the first tube may be coupled with the first chamber of the vacuum tank, wherein the collecting tank comprises a first hatch arranged to selectively open the first chamber to the exterior of the tank for removal of collected substances, and/or wherein the collecting tank comprises a second hatch arranged to selectively open the second chamber to the exterior of the tank for 10 removal of fluid. The first hatch allows to remove collected substances, in particular larger particles. The first hatch may comprise a sufficient size to introduce tools for scraping or pulling and to remove larger objects from inside the collecting tank. As only very fine particles or substances may enter the second chamber, the second hatch may have a smaller size and may particularly be used for removal of fluid. 15 The suction device may comprise a sump suction pump in fluid communication with the second chamber to selectively remove fluid and/or solids from the second chamber. Removal of fluid and in particular liquid may be automatically accomplished by the sump suction pump, which may even limit the interaction of the user with the collecting tank to the use of the first hatch. The collecting tank 20 may comprise a sensor arranged in the second chamber to automatically operate the sump suction pump upon demand.The suction nozzle may be arranged in a handheld medical device. Such a handheld medical device could be designed for the excision and removal of tissue, which may be particularly useful in ocular surgery for cataract removal. The medical device 25 may be designed as a pencil-like device with the suction nozzle arranged at a distal end. The dual-action of air ejection and suction facilitates precise and minimally invasive tissue removal, reducing trauma and promoting quicker recovery.The suction device may comprise a vacuum hose arranged between the vacuum device and the suction nozzle. The vacuum hose should be sufficiently rigid or stiff 30 to avoid collapsing when applying a vacuum. The suction nozzle may be permanently installed at a place, where substances need to be suctioned regularly, for example, in a fish farming environment underneath a fish cage under water. All other components that belong to the suction device may be installed above the water. By using the vacuum hose, long distances between a collecting tank and the 35 suction nozzle can be provided.The suction device may comprise a nozzle ring attachable to the tip of the suction nozzle, and a liquid supply source, wherein the nozzle ring is coupled with the liquid supply source. This may further improve loosening, cutting, removing or diluting solid masses. the liquid may be water or water that contains additives. The 3494397supply may be adjustable. The nozzle ring may be attached to the tip of the suction nozzle.Brief description of the drawings5 In the following description this invention will be further explained by way of exemplary embodiments shown in the drawings:Fig. 1 shows a lateral sectional view of a suction nozzle.Fig. 2 shows a front view of the suction nozzle.Fig. 3 shows a suction device without the suction nozzle in a schematic view.10 Fig. 4 shows a schematic view of a suction device arranged in a fish farm.Detailed description of the inventionFig. 1 shows a schematic sectional view of a suction nozzle 2 of a suction device, which may be particularly useful for minimal invasive surgical operations. For 15 example, the suction nozzle may be used for excision and removal of tissue, such as the lens of the eye. Other applications are not ruled out and this is merely one of many examples. Fig. 2 additionally shows the suction nozzle 2 in a front view with the viewing direction being from the right hand side of Fig. 1 to the left hand side onto the suction nozzle 2.20 The suction nozzle 2 comprises a first tube 4 and a second tube 6. In the exemplary application stated above, the tubes 4 and 6 may be made from biocompatible materials such as stainless steel or titanium, due to their corrosion resistance, mechanical strength, and compatibility with sterilization processes. The first tube 4 may have an outer diameter d1 of about 0,8 to 1,5 mm and the second tube 6 may 25 have an outer diameter d2 of about 3 to 4 mm. Additionally, medical-grade polymers like PEEK (polyether ether ketone) may be utilized for their low weight, durability, and resistance to both chemical and thermal degradation. The When used for other applications, the tubes 4 and 6 may be made from different materials.The outer diameter d1 of first tube 4 is smaller than an inner diameter d3 of the 30 second tube 6. The fist tube 4 is arranged inside the second tube 6, such that the second tube 6 surrounds the first tube 4, and thereby forms an annular gap 8 between the first tube 4 and the second tube 6.On the right-hand side of fig. 1, a tip 12 of the suction nozzle 2 is illustrated. The first tube 4 defines a central flow channel 10 that extends to the tip 12. At the tip 349439812, both tubes 4 and 6 are flush with each other and distal ends 5 and 7 of the first tube 4 and the second tube 6 do not protrude over each other. However, in an alternative the first tube 4 may be recessed proximally with respect to the second tube 6 by approximately the size of the outer diameter d1 of the first tube 4.5 Radial outer edges of both tubes 4 and 6 are beveled or chamfered. In this exemplary embodiment, the radial outer edges are beveled in a way that they form sharp edges to mechanically support an excision accomplished by the suction nozzle 2.As indicated on the left-hand side of fig. 1, the second tube 6 exemplarily has a 10 cutout 15, through which the first tube 4 protrudes to exit the interior space of the second tube 6. The central flow channel 10 can thus be connected to a vacuum hose 18 and the gap 8 can be connected to an air supply hose 16 independently.A vacuum device (not shown here) is coupled with the central flow channel 10 through the vacuum hose 18 to provide a suctioning effect at the tip 12. A15 pressurized air source (not shown here) is coupled with the annular gap 8 through an air supply hose 16 to provide an air flow at the tip 12. Resultantly, air is ejected from the annular gap 8 at the tip 12, impinges on the target in front of the tip 12 and will be deflected about approximately 180° through the suctioning effect. The air, other fluids in an around the target and the material to be removed is suctioned into 20 the central flow channel 10.The air flow produced by simultaneous ejection and suctioning may lead to a turbulent, converging-diverging flow field. As high-pressure air is ejected from the annular gap 8, it generates a broad annular and high-velocity stream directed towards the target, where it creates a localized high-pressure zone. The central flow 25 channel 10 in turn generates a negative pressure zone, leading to a converging flow as ambient air and, for example, emulsified tissue or other substances are drawn towards and into the central flow channel 10. The interaction between the highpressure jet and the negative pressure suctioning forms a complex, dynamic flow pattern characterized by vortices 14, promoting efficient removal and, if relevant for 30 the application of the suction nozzle 2, emulsification of tissue.As apparent from fig. 2, the first tube 4 is concentrically arranged inside the second tube 6. Resultantly, the annular gap 8 has the same radial width over its complete circumferential extension.Fig. 3 shows a suction device 20 without the suction nozzle 2, which is left out for 35 illustration purposes. It would be attached to the air supply hose 16 and the vacuum hose 18 on the right hand side of Fig. 3. 3494399The vacuum hose 18 is connectable to the first tube 4 and is connected to a collecting tank 38. The collecting tank 38 exemplarily comprises a floating ball valve 34, through which the collecting tank 38 is coupled with a vacuum device 40 through a vacuum supply hose 36. The vacuum device 40 may comprise a radial 5 blower having an air inlet and an air outlet, wherein the air inlet creates an underpressure usable for evacuating the collecting tank 38. For adjusting the resulting underpressure inside the collecting tank 38, a vacuum adjustment valve 30 as well as a pressure gauge 32 are exemplarily provided.A pressurized air source 42, which may also comprise a blower, is coupled with the 10 air supply hose 16 through an air valve 22. The air valve 22 may be manually or electrically adjustable to control or regulate the resulting air flow inside the air supply hose 16 and the annular gap 8, respectively. By changing the setting of the air valve 22, the volume flow and thus, the speed of the air ejected at the tip 12 can be adjusted.15 The suction device 20 additionally comprises a lancet 26, which is introducible into the vacuum hose 18 through a lateral opening 24 in the wall of the vacuum hose 18. The lancet 26 may provide further assistance in a surgical operation.A sampling valve 28 is arranged at the collecting tank 38 for selectively removing and analyzing substances suctioned into the collecting tank 38.20 The suction nozzle 2 shown in figs. 1 to 3 is designed for being integrated into a medical device, for example, a handheld medical device having a pen-like shape. In contrast to this, fig. 4 shows another field of application of a suction device 43. Here, a submerged fish cage 44 is shown. Such a fish cage 44 is typically made from a durable netting material, is anchored to the seabed and is employed to 25 cultivate salmon or other fish in marine environments. It may be designed to float on the water surface while extending deep into the sea. The fish cage 44 provides a controlled habitat that mimics natural conditions, optimizing water quality and flow to support the growth and health of the fish. The excrements of the fish in such a fish cage 44 typically settles on the seabed beneath the cage 44 and may contribute 30 to the accumulation of organic matter in the sediment. If the accumulation of excrements becomes excessive, it may lead to localized eutrophication, resulting in reduced oxygen levels and potentially harmful effects on both the farmed fish and the surrounding marine ecosystem. It is known to temporarily leave such a site unused after a while, i.e. fallowing, and relocate the fish cage 44 to another site. 35 By using the suction device 43 according to the invention, excrements, dead fish and other organic material that forms a sludge on the seabed may efficiently be removed. A suction nozzle 46, which is designed in analogy to the suction nozzle 2, 34943910is arranged at a bottom side of the fish cage 44. It can particularly disintegrate and suction dead fish that is present at the bottom of the fish cage 44.The skilled person would acknowledge that the suction device 43 is usable both by arranging the nozzle 46 inside a fish cage 44 or outside a fish cage 44 to suction 5 material inside or outside a fish cage. The suction device 43 is also usable for suction of material without the context of a fish cage.The first tube 4 is connected to a vacuum hose 48 that is connected to a collecting tank 50. Inside the collecting tank 50, a grate 52 for filtering fish and particles is placed. The grate 52 is inclined and separates the interior space of the collecting 10 tank 50 into a first chamber 50a and a second chamber 50b.A suction port 54 having a floating ball valve 56 is arranged at the collecting tank 50 and is connected to a vacuum device 40. By operating the vacuum device 40, the pressure inside the collecting tank 50 is reduced. An inlet port 60, which is in fluid communication with the first chamber 50a, is connected to the vacuum hose 48. The 15 vacuum created in the collecting tank 50 is thus connected to the central flow channel 10 of the first tube 4.Emptying or cleaning of the collecting tank 50 may be facilitated by pressurizing the collecting tank 50 after use, for example by feeding air into the collecting tank 50. This may be achieved, for example, by the vacuum device 40. A non-return 20 valve 62 prevents air and other contents from the collecting tank 50 from entering the vacuum hose 48. When pressurized, the collecting tank 50 can be cleaned out by opening the first hatch 58 and/or second hatch 66 to flush out any excess material. A first hatch 58 is arranged at a bottom right of the collecting tank 50. The grate 52 is inclined in a way that it extends from an upper left side of the collecting tank 50, 25 where the inlet port 60 is placed, to the bottom right, where the first hatch 58 is placed. The grate 52 ends just beneath the first hatch 58. The sludge that enters the collecting tank 50 through the inlet port 60 thus collects at the first hatch 58. The sludge may also contain dead fish that may be present at the bottom of the fish cage 44 and can efficiently be removed.30 At the opposite side, i.e. at the bottom left, a sump suction pump 64 is arranged that is able to pump out fluid that is collected in the second chamber 50b. In addition, a second hatch 66 is provided at the bottom of the collecting tank 50 and allows to drain the fluid from the second chamber 50b. In case the sump suction pump 64 cannot handle the accumulation of material in the collecting tank 50, a35 pressurization of the collecting tank 50 and cleaning it out as described above may be considered. 34943911A pressurized air source 42 is connected to the annular gap 8 through an air supply hose 68. The pressure from the pressurized air source 42 may be adapted to the water immersion depth of the suction nozzle 46. When the suction nozzle 46 is at a depth h of 15m, for example, the pressure delivered to the annular gap of the 5 suction nozzle 46 must exceed 1,5 bar to be able to eject air from the nozzle 46.At the right-hand side next to the fish cage 44, another suction nozzle 46 is shown, which is arranged above the seabed 70 to suction excrements 72 that accumulate on the seabed 70.A still further suction nozzle 74 is shown, which comprises a nozzle ring 76 10 attachable to the tip 12 of the suction nozzle 74, and a liquid supply source 78, wherein the nozzle ring 76 is coupled with the liquid supply source 78. This may further improve loosening, cutting, removing, disintegrating or diluting solid masses. The liquid may be water or water that contains additives. The supply may be adjustable.15 A plurality of suction nozzles 46 and/or 74 may be coupled with a single vacuum device 40 and/or a single pressurized air source 42 and/or a single liquid supply source 78. By using valves (which are not shown herein), individual suction nozzles may be operated upon demand.Known suction principles rely on powerful water currents in the suction nozzle, 20 leading to suctioning of 90% water and 10% sludge. Due to the combination of ejected air and a vacuum at a central flow channel, sludge is more efficiently removed. It has been shown in experiments that the amount of water in the suction operation can be reduced by over 60%. In ideal conditions, the inflow at the inlet port 60 carries up to 80% sludge and only 10 to 20% of water. Thus, the suction 25 device 43 has an improved efficiency compared to known solutions. 34943912Reference numerals2 suction nozzle4 first tube5 5 distal end of first tube 6 second tube7 distal end of second tube 8 annular gap10 flow channel10 12 tip14 vortex15 cutout16 air supply hose18 vacuum hose15 20 suction device22 air valve24 lateral opening26 lancet28 sampling valve20 30 vacuum adjustment valve 32 pressure gauge34 floating ball valve36 vacuum supply hose 38 collecting tank25 40 vacuum device42 pressurized air source 43 suction device44 fish cage46 suction nozzle30 48 vacuum hose50 collecting tank52 filtering grate54 suction port56 floating ball valve35 58 first hatch60 inlet port62 non return valve64 sump suction pump66 second hatch40 68 air supply hose70 seabed72 excrements 3494391374 suction nozzle76 nozzle ring78 liquid supply source5d1 outer diameter of first tube 4 d2 outer diameter of second tube 6 d3 inner diameter of second tube 6 h immersion depth10
Claims
34943914CLAIMS1. Suction device (20, 43) for suctioning substances in water, comprising:a vacuum device (40),5 a suction nozzle (2, 46, 74) having a first tube (4) and a second tube (6), each of the tubes (4, 6) being open at a tip (12) of the suction nozzle (2, 46, 74), wherein a distal end (5) of the first tube (4) is arranged inside a distal end (7) of the second tube (6), such that the tubes enclose an annular gap (8) at their distal ends at the tip (12) of the suction nozzle (2, 46, 74),10 wherein the first tube (4) is coupled with the vacuum device (40),wherein the annular gap (8) is coupled with a pressurized air source (42), wherein the suction device (20, 43) is configured to simultaneously eject air through the annular gap (8) and suction substances that are at least partially entrained by the ejected air through the first tube (4) at the tip (12) of the suction nozzle (2, 46, 15 74), andwherein the suction device (20, 43) comprises an adjustable air valve (22) arranged between the annular gap and the pressurized air source (42) for controlling an air flow through the annular gap (8).20 2. The suction device (20, 43) according to claim 1,wherein the first tube (4) and the second tube (6) are concentrically arranged.3. The suction device (20, 43) according to claim 1 or 2,wherein the distal end (5) of the first tube (4) and the distal end (7) of the 25 second tube (6) are flush with each other.4. The suction device (20, 43) according to any of the preceding claims, wherein the distal end (5, 7) of at least one of the first pipe (4) and the second pipe (6) comprises an external bevel.305. The suction device (20, 43) according to any of the preceding claims, wherein the annular gap (8) is open without interruptions along its complete circumferential extension around the first tube (4).35 6. The suction device (20, 43) according to any of the preceding claims,comprising a collecting tank (38, 50) arranged between the vacuum device (40) and the first tube (4) for collecting the suctioned substances.7. The suction device (20, 43) according to claim 6,34943915comprising a vacuum adjustment valve (30) connected to the collecting tank (38, 50).8. The suction device (20, 43) according to claim 6 or 7,5 comprising a floating ball valve (34, 56) arranged inside the collecting tank (38, 50) and connected to the vacuum device (40).9. The suction device (20, 43) according to any of claims 6 to 8,wherein the collecting tank (38, 50) comprises a filtering grate (52) dividing 10 the collecting tank (38, 50) into a first chamber (50a) and a second chamber (50b).10. The suction device (20, 43) according to claim 9,wherein the vacuum device (40) and the first tube (4) are coupled with the first chamber (50a) of the collecting tank (38, 50),15 wherein the collecting tank (38, 50) comprises a first hatch (58) arranged to selectively open the first chamber (50a) to the exterior of the collecting tank (38, 50) for removal of collected substances, and/orwherein the collecting tank (38, 50) comprises a second hatch (66) arranged to selectively open the second chamber (50b) to the exterior of the collecting tank (38, 20 50) for removal of fluid and/or solids.11. The suction device (20, 43) according to claim 9 or 10,comprising a sump suction pump (64) in fluid communication with the second chamber (50b) to selectively remove fluid and/or solids from the second chamber 25 (50b).12. The suction device (20, 43) according to any of the preceding claims, wherein the suction nozzle (2, 46, 74) is arranged in a handheld medical device.3013. The suction device (20, 43) according to any of the preceding claims, comprising a vacuum hose (18, 48) arranged between the vacuum device (40) and the suction nozzle (2, 46, 74).35 14. The suction device (20, 43) according to any of the preceding claims, comprising:a nozzle ring (76) attachable to the tip (12) of the suction nozzle (2, 46, 74), anda liquid supply source (78),40 wherein the nozzle ring (76) is coupled with the liquid supply source (78).34943916Patentkrav1. Sugeanordning (20, 43) for suging av substanser i vann, omfattende:en vakuumenhet (40),5 en sugedyse (2, 46, 74) med et første rør (4) og et andre rør (6), hvor hvert av rørene (4, 6) er åpent ved en spiss (12) av sugedysen (2, 46, 74),hvor en distal ende (5) av det første røret (4) er anbrakt inne i en distal ende (7) av det andre røret (6), slik at rørene omslutter et ringformet gap (8) ved sine distale ender ved spissen (12) av sugedysen (2, 46, 74),10 hvor det første røret (4) er koblet til vakuumenheten (40),hvor det ringformede gapet (8) er koblet til en trykkluftkilde (42),hvor sugeanordningen (20, 43) er konfigurert til samtidig å utstøte luft gjennom det ringformede gapet (8) og suge substanser, som i det minste delvis er revet med av den utstøtte luften, gjennom det første røret (4) ved spissen (12) av sugedysen (2, 46, 74), 15 ogkarakterisert ved at sugeanordningen (20, 43) omfatter en justerbar luftventil (22) anbrakt mellom ringgapet og trykkluftkilden (42) for å kontrollere en luftstrøm gjennom ringgapet (8).20 2. Sugeanordningen (20, 43) ifølge krav 1,hvor det første røret (4) og det andre røret (6) er konsentrisk anbrakt.3. Sugeanordningen (20, 43) ifølge krav 1 eller 2,hvor den distale enden (5) av det første røret (4) og den distale enden (7) av det andre røret (6) 25 er i flukt med hverandre.4. Sugeanordningen (20, 43) ifølge et hvilket som helst av de foregående kravene,hvor den distale enden (5, 7) av minst ett av det første røret (4) og det andre røret (6) omfatter en utvendig avfasing.349439175. Sugeanordningen (20, 43) ifølge et hvilket som helst av de foregående kravene,hvor det ringformede gapet (8) er åpent uten avbrudd langs hele sin omkretsmessige utstrekning rundt det første røret (4).5 6. Sugeanordningen (20, 43) ifølge et hvilket som helst av de foregående kravene,omfattende en oppsamlingstank (38, 50) anbrakt mellom vakuuminnretningen (40) og det første røret (4) for å samle opp de innsugede substansene.7. Sugeanordningen (20, 43) ifølge krav 6,10 omfattende en vakuumjusteringsventil (30) koblet til oppsamlingstanken (38, 50).8. Sugeanordningen (20, 43) ifølge krav 6 eller 7,omfattende en flytende kuleventil (34, 56) anbrakt inne i oppsamlingstanken (38, 50) og koblet til vakuumenheten (40).159. Sugeanordningen (20, 43) ifølge et hvilket som helst av kravene 6 til 8,hvor oppsamlingstanken (38, 50) omfatter en filterrist (52) som deler oppsamlingstanken (38, 50) i et første kammer (50a) og et andre kammer (50b).20 10. Sugeanordningen (20, 43) ifølge krav 9,hvor vakuuminnretningen (40) og det første røret (4) er koblet til det første kammeret (50a) i oppsamlingstanken (38, 50),hvor oppsamlingstanken (38, 50) omfatter en første luke (58) anbrakt for selektivt å åpne det første kammeret (50a) mot utsiden av oppsamlingstanken (38, 50) for fjerning av oppsamlede 25 substanser, og/ellerhvor oppsamlingstanken (38, 50) omfatter en andre luke (66) anbrakt for selektivt å åpne det andre kammeret (50b) mot utsiden av oppsamlingstanken (38, 50) for fjerning av væske og/eller faste substanser.30 11. Sugeanordningen (20, 43) ifølge krav 9 eller 10,34943918omfattende en sumpsugepumpe (64) i fluidekommunikasjon med det andre kammeret (50b) for selektivt å fjerne fluide og/eller faste substanser fra det andre kammeret (50b).12. Sugeanordningen (20, 43) ifølge et hvilket som helst av de foregående kravene,5 hvor sugedysen (2, 46, 74) er anbrakt i en håndholdt medisinsk innretning.13. Sugeanordningen (20, 43) ifølge et hvilket som helst av de foregående kravene,omfattende en vakuumslange (18, 48) anbrakt mellom vakuuminnretningen (40) og sugedysen (2, 46, 74).1014. Sugeanordningen (20, 43) ifølge et hvilket som helst av de foregående kravene, omfattende:en dysering (76) som kan festes til spissen (12) av sugedysen (2, 46, 74), ogen væsketilførselskilde (78),15 hvor dyseringen (76) er koblet til væsketilførselskilden (78).
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Patent classes

IPC classesE02F 3/88E02F 3/92CPC classesE02F 3/88E02F 3/92E02F 3/9243E02F 3/925A61B 2217/00

Citations

US 2008085163 A1 (A1)DE 3245821 A1 (A1)JP S5562668 U (U)

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ØSI ALLSERVICE AS
Nesveien 4 1513 MOSS NO (MOSS Municipality, Østfold county)Org. number: 982735580Inventors
Terje Plukkerud
Nesveien 4 1513 MOSS NO (MOSS Municipality, Østfold county)

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ACAPO ONSAGERS AS
ACAPO ONSAGERS AS

Org. number: 932214636

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Edvard Griegs vei 1 5059 BERGEN NO (BERGEN Municipality, Vestland county)
Org. number: 932214636
Reference: P29620NO00

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