HK1137952A - Suction pump unit - Google Patents

Description

Technical field

The invention relates to a fluid collection tank as defined in the general concept of claim 1.

State of the art

In the medical field, and in particular in thoracic drainage, stationary drainage systems are commonly used for draining body fluids or secretions from body cavities or wounds. These drainage systems consist essentially of a suction source, in particular a vacuum pump, a fluid or secretion collecting tank, a water lock placed between them and connecting lines, namely a drainage line leading from a patient to the secretory tank, a connection line leading from the secretory tank to the water lock and a vacuum line connecting the water lock to the suction source.

Although these suction systems have proven themselves in practice, it is essential for the healing process, especially after a thoracic operation, that the patient can move and leave his bed as quickly as possible.

It has therefore been suggested that all the above drainage system components be mounted on a mobile rack, so that the patient can at least have some mobility within the hospital.

In addition, portable suction units are known to significantly increase the patient's range of mobility and are mostly used for wound drainage.

US-6'352'525 reveals a portable pump unit, however, which is designed for thoracic drainage. It can be attached to the patient's body and thus allow him to move freely and relatively unrestricted. This drainage pump unit incorporates a vacuum pump, an energy source, a vacuum chamber and a secretion collector. The vacuum chamber is arranged in a first part, the secretion collector in a second part and the vacuum pump in a third part. The first and third parts are arranged in a drainage system above the second part and are soluble and can be connected to the second part by vacuum connections or vacuum connections.

WO 99/10024 describes a portable pump unit for thoracic drainage, connected by an external line to a similarly portable kidney-shaped collecting tank.

EP-A-1'184'043 also shows a small-sized suction pump, especially for wound drainage, which has a receptacle for suction material and a lid, with all the components of the pump necessary for operation integrated in the lid.

Description of the invention

The invention is intended to create a fluid collection tank which prevents contamination of the intake line or pump by suctioned fluid.

The fluid collection tank according to the invention has a drainage connection to a patient-side drainage hose and a vacuum connection to a suction pump, and has an interior divided by ribs, the interior divided into at least one vacuum chamber and one drainage chamber, these two chambers being connected by at least one narrow passage, the vacuum connection being in the vacuum chamber and the drainage connection in the drainage chamber.

Preferably, the vacuum chamber and the secretion chamber are not directly connected, but are separated by an intermediate chamber.

The vacuum chamber and the secretion chamber are separated, so the vacuum connection is relatively well protected, even without back valves or membranes.

The fluid storage tank of the invention can be used in particular in a portable suction pump unit for the suction of body fluids and/or air, which has a pump unit housing with a pump unit and at least one secretory or fluid storage tank solubly connected to this pump unit housing. The pump unit housing has a front wall, a rear wall and a side wall located between these two walls, the front and the back wall having one wall per wall, which sides face the wall and the fluid storage tank is kept between these walls. Nevertheless, the fluid storage tank can be easily attached to the pump unit and safely kept there.

This suction pump unit allows maximum mobility for the patient and allows easy operation of the unit.

The patient can carry the suction pump unit around in a variety of ways: he can hang it around his neck, fasten it to a belt, or wear it over his shoulder.

The same housing can also be used for different sizes of fluid storage tanks, which reduces production and operating costs.

In a preferred embodiment, the fluid collection tank is held in- and out-flip between the wall edges, preferably in a lower area where the tank is held in- and out-flip and in an upper area where the pump unit housing is locked.

Preferably the container is completely removable from the housing, and it is easier to replace the container if the container is retractable.

The suction pump unit of the invention is used for medical purposes, in particular for thoracic drainage and wound drainage, but other applications are possible, for example for suctioning body fluids during surgery or for liposuction.

In particular, in thoracic and wound drainage, the advantage is that the device can be kept in operation at all times and thus a permanent vacuum can be created which is actively maintained.

Other advantageous embodiments are shown by the dependent claims.

Brief description of the drawings

The following illustrations of the subject matter of the invention are illustrated by means of preferred embodiments shown in the accompanying drawings, showing: Figure 1a perspective view of an exhaust pump unit according to the invention in a first embodiment;Figure 2a view of the exhaust pump unit according to Figure 1 from above;Figure 6a view of the exhaust pump unit according to Figure 1 with a view of the interior of the housing;Figure 3a perspective view of the exhaust pump unit according to Figure 1 with a partially deflected fluid collection tank in a perspective view from a first side;Figure 4a perspective view of the exhaust pump unit according to Figure 3 in a perspective view from a second side;Figure 5a view of the exhaust pump unit according to Figure 1 from above;Figure 6a perspective view of the exhaust pump unit according to the invention in a second embodiment from above;Figure 7a perspective view of a fluid collection tank in a perspective view from a first side;Figure 8a perspective view of a fluid collection tank in a perspective view from a second side;Figure 10a perspective view of a patient walking in a second side;Figure 8a perspective view of a fluid treatment unit according to Figure 10a perspective of a patient walking in a second side;Figure 8a perspective view of a patient walking in a second side;Figure 10a perspective view of a fluid treatment in a patient walking in a second side;Figure 8a perspective of a patient walking in a patient walking in a second side;Figure 10a perspective view of a patient walking in a patient walking in a patient in a second side;Figure 8a perspective of a patient walking in a patient walking in a patient;Figure 10 and a patient in a patient in a second side;Figure 8a perspective of a patient walking in a patient in a patient;Figure 10 and a patient in a patient in a patient in a patient in a patient;Figure 8 in a patient in a patient in a patient in a patient;Figure 10 and a patient in a patient in a patient in a patient in a patient;Figure 8 in a patient in a patient in a patient in a patient;

Ways of carrying out the invention

The first example of the exhaust pump unit of the invention is shown in Figures 1 and 2. It consists essentially of a pump unit housing 1 with a pump unit 6 located in it and visible in Figure 2 and at least one fluid collection tank 2. Preferably, there is exactly one fluid collection tank 2. The pump unit 6 is used to generate the pressure necessary for the extraction. The fluid collection tank 2 is connected to the pump unit 6 so that the subpressure can be generated in the tank 2. The collection tank 2 is connected via an exhaust pipe or a secretory line to a 30 kV wound or the patient's body, where the body fluid is to be drained, the collected fluid drained from the body.

Preferably, not only the discharge line 30 leads to the patient, but also a measuring line 31 through which, for example, the pressure or flow rate in the discharge line can be measured. Preferably, a double-loop patient tube 3 is used for this purpose, which contains both lines 30, 31. The tube 3 may be directed from the housing 1 as shown here, but it may also be arranged at an angle or a displaced adapter may be used into which the tube 3 can be inserted.

Preferably, the tube 3 is connected to an adapter 7. This adapter is shown in detail in Figure 7. It is preferably made of plastic by injection molding. It has a double tube connector 71 to which or into which the double-loop patient tube 3 can be connected. To this tube connector 71 a flange 70 is mounted, which is mounted on the housing 1 and through which the adapter 7 can be attached, for example, in the housing 1. The housing-side part of the adapter 7 has a detached head-plug section 72 for a housing-secreting tube 19 and a connection 73 for the measuring tube 31 which is closed at the opposite end of the head-plug 74 and 72 for the measuring tube 72.

The pump unit 6 consists essentially of an electric motor 60, a storage element 61, batteries here, and a vacuum pump 62. The motor 60 is preferably mounted on the pump 62 flanked and the vacuum pump 62 is preferably kept fixed on the housing 1.

Preferably, the unit 6 is placed approximately in the centre of the housing 1 and preferably in the centre of the housing 1; it is advantageous if the unit 6 is placed in such a way that the unit 1 and unit 6 have a common centre of gravity so that the unit 1 does not tilt to one side when being worn.

The pump unit housing 1 is essentially square, with a rear wall 10, a front wall 11 running approximately parallel to it, a first side wall 16 arranged between these walls, a second side wall 17 running approximately parallel to the first side wall 16, an upper wall 12 and a lower wall not visible in the figures. The housing 1 is preferably made of plastic or metal. The rear wall 10 and the front wall 11 may be flat. The front wall 11 may also have a central but protruding arch 112 as shown in Figure 3. The rear wall 10 may also be curved to fit the shape of the human body and thus be more suitably curved to the inside wall.

Preferably the rear wall 10 and the front wall 11 have the largest wall areas, and the upper and lower wall 12 are longer than the side walls 16, 17, so that the housing 1 forms a reclining square.

The figures do not show the attachments for the appropriate brackets and straps for the portable or portable suction pump unit, but they are preferably on the back or side walls of the housing.

Housing 1 contains controls for pump unit 6; preferably these controls are located in the upper wall 12. In the example shown here, there is a main switch 5 to turn the unit or apparatus on and off. There is also an indicator and control panel 15 on which the status information of the apparatus, the suction operation and other information useful for optimal suction can be displayed or retrieved. For example, the air flow rate can be measured by the secretory line 30 and shown in the display panel 15. It is also possible to arrange a storage element in housing 1 to store measurement data and to display the corresponding data in the display panel 15 after the command.

In addition, the vacuum pump 62 or the motor 60 can be activated or the desired suction parameters entered or selected via this field 15. Preferably, the field 15 is a touch screen field of a known type. However, it is also possible to use control buttons and switches and optionally a known LCD display instead of such a field.

The rear wall 10 and the front wall 11 shall be at least in front of the first side wall 16, preferably both side walls and also the lower and upper walls, with their edges.

The fluid storage tank 2 is also approximately square in shape, with two parallel and approximately flat walls 22 forming the front and rear walls, the side walls and the upper and lower walls.

This fluid storage tank 2 is now soluble in housing 1 and preferably held completely removable. To this end, the rear wall 10 and the front wall 11 of the housing have areas, here called front wall edge 110 and rear wall edge 100, which are in front of the first side wall 16. These wall edges 100, 110 are preferably curved, having a notch towards their own wall surface. Between these wall edges 100, 110 the tank 2 is held, the curved areas facilitating the grasping and manual holding of the tank 2.

As shown in Figures 3 and 4, the container is adjustable and adjustable between the two edges 100, 110, and is held in its lower area between the wall edges 100, 110, and is preferably adjustable in this position. For this purpose, corresponding bolts may be fitted on the front and rear walls 22 of the container 2 and corresponding remnants on the wall edges 100, 110.

In an upper area, the container 2 can be locked with the housing 1. To this end, the container 2 has a gap 20 in which a retention shaft 14 of the housing 1 can intervene. The retention shaft 14 can be released from the gap with the exception 20 by means of a release button or switch 13 so that the container 2 can be deflected. The release button 13 is preferably located in the upper wall 12 of the container. As an additional stop, the container 2 can be provided with protruding hinges on its front and back walls, which are pressed to the wall edges 100, 110 so that the container 2 does not fall out of the housing 1 automatically after the release of the lock.

The container side pendants are visible in Figure 4. The reference digit 24 is the container side vacuum connection and the reference digit 25 is the container side secret connection. Both connectors are located in a page 23 of container 2. The vacuum connectors 24, 18 are the connection between the vacuum tube 62 and container 2. The container side secret connectors 19, 25 connect the container 2 to the container side secret connection 30 Adap 7.

When the container 2 is removed, the container-side connection 25 can be closed by means of a closing element 4. This is preferably attached to the container 2, as shown in Figure 4. It has a dock and a closing cap placed at the end of the dock. The closing cap is suitable for closing connection 25. Connection 24 can be closed by a non-shown filter, which closes automatically, for example, when moisture saturation occurs. Other types of closing are also possible.

In Figure 2 it is shown that the leading edges of pump unit housing 1, namely the rear and front bottom edge 101, 111, form a support surface for application to a surface such as a table. However, the fluid collection tank 2 preferably ends with its bottom floor above this support surface so that it hangs freely in housing 1. However, as shown in Figure 5, it is held between the two wall edges 110 100, 110 and 110 100.

The size of the container 2 can be varied. Figure 5 shows a relatively short container 2 and Figure 6 a longer container 2. They only need to have the same shape in the area between the wall edges 100, 110 so that both can be fixed in the same housing 1.

In Figures 8 and 9, two opposite parts of a pump unit housing 1 are shown in a third example, forming the rear wall 10 (Figure 8) and the front wall 11 (Figure 9) of the housing 1.

The two parts 10, 11 are designed to be plugged in, and are kept apart from each other.

One or both of the two walls, here the back wall 10, may be fitted with a 12' handle. At the 12' handle, preferably, a tub 120 is placed with its arch open upwards. This tub 120 is used to receive or attach the patient tube 30 so that it is held along the pump.

At least one part 10, 11, preferably both parts, has an upper and a lower backing at its front edge 115, 116. The two opposite upper backing leads 115 have a widened opening and a subsequently horizontal end point which is directed inwards away from the edge. The two opposite lower backing leads 116 also have an extended end point, but this also passes inwards away from the edge into a lower, slanted downward end point. These leads 116 and 115 are used to receive and hold the fluid collection tank 2.

A corresponding plastic fluid storage tank 2 is shown in Figure 10 and, in the area of a side wall 23, has upper and lower bolts or cones 21, 21' injected individually into the rear or front wall and substantially perpendicular to it.

To secure the collector tank 2 loosely to the housing 1, it is first inserted with its lower bolts 21' into the lower back guides 116 to the coupling and then, by a swivel motion around the pivot axis defined by the end position of the lower back guides 116, is connected with the upper bolts 21 to the upper back guides 115 or their end position. The same method of attachment is also preferred for the examples mentioned above. The bolts can also be placed on the housing and the back guides on the container.

As can be seen in Figure 10, in this collection tank 2 the tank side vacuum connection 24 and the tank side secretory connection 25 are no longer in the same configuration as in the example above. The adapter 70 does not necessarily have to be located in a front or rear wall 10, 11 but can also be located elsewhere in the housing 1, for example on the front side. Furthermore, the tank 2 is equipped with an intervention strip 23' to fix the tank 2 in the housing 1 instead of an exception, which can be used by the container 1 restraint. The nose and the removal or removal can also be used alternately on the housing or on the rear side of the housing. These features can be combined with each other in the above examples and can also be used in any of the above treatments.

The container 2 may be equipped with a single chamber, but preferably with a divided interior as shown in Figures 11 and 12.

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The two passages 261 and 271 are relatively narrow, but there may be several passages, which should be small enough to prevent the secretion or the suction fluid from flowing back as far as possible and large enough to allow the container to be pressurised as quickly as possible.

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The lower part may also have vertical separating strips 290, 290', 291 which may extend over almost the whole height of the lower part or only a short lower part of it.

The 25th secretion junction is located in the lower part of the vessel, the lower part of which is used to absorb the liquid drawn in and forms a secretion chamber 29, 29'. The separating ribs 290, 290', 291 divide this chamber into sub-chambers, which are connected to each other by the fluid. They prevent the fluid collected from flowing in and out. The 28th and 28th handles prevent the fluid from flowing into the upper part of the vessel or from flowing into this area if the vessel is slightly inclined. The narrow labyrinthine openings and in particular the upper part of the labyrinthine arrangement, thanks to the intermediate or expansion chamber, prevent fluid that can still reach the upper part of the vessel from entering the vacuum.

In an unrepresented form, the ribs are arranged in one part only and the second part is flattened and serves as a lid.

The intermediate chamber 27, 27' is optional but preferred because it avoids a direct connection between vacuum chamber 26, 26' and secretory chamber 29, 29'.

All the above fluid storage tanks can be manufactured in different sizes.

The suction pump unit of the invention allows for easy and safe replacement of the fluid collection tank and allows for increased patient mobility.

List of reference marks

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Claims (15)

1. Fluid collection tank for receiving drained fluid, with a drainage outlet (24) for the patient-side drainage hose and a vacuum outlet (25) for the suction pump, and with an inner compartment divided by ribs, characterised by the inner compartment being divided into at least one vacuum chamber (26, 26') and one secretion chamber (29, 29') connected by at least one passage, with the vacuum outlet (24) in the vacuum chamber (26, 26') and the secretory outlet (25) in the secretion chamber (29, 29').
2. Fluid storage containers according to claim 1, with an intermediate chamber (27, 27') between the vacuum chamber (26, 26') and the secretion chamber (29, 29') and with a vacuum passage (261) from the vacuum chamber (26, 26') to the intermediate chamber (27, 27') and from there to the secretion chamber (29, 29').
3. Fluid storage tanks as claimed 2, with no direct connection between vacuum chamber (26, 26') and excretion chamber (29, 29').
4. Fluid storage tank according to one of claims 1 to 3, with the vacuum chamber (26, 26') located in the upper part of the tank (2).
5. Fluid storage tank according to claim 4, with a sleeve (28, 28') adjacent to the vacuum chamber (26, 26') in the upper part of the secretory chamber (29, 29') extending over a substantial part of the width of the tank (2) but not over the entire width and extending over the entire depth.
6. Fluid storage tanks according to one of claims 1 to 5, with the secretory chamber (29, 29') divided into interconnected sub-chambers by vertical ribs (290, 290', 291).
7. Portable suction pump unit for suction of body fluids and/or air with a fluid collection tank as defined in any of the claims 1 to 6, where the suction pump unit has a pump housing (1) with a pump unit (6) and at least one soluble fluid collection tank (2) connected to that pump unit housing (1), where the pump unit housing (1) has a front (11 wall), a rear wall (10) and a side wall (16) located between these two walls (10, 11), where the front (11) and rear wall (10) each have one wall edge (110, 100) which is located between this side wall (16) and the fluid storage tank (2) between these wall edges (110, 100), where the fluid container is located between the front (110, 100) and the back (110, 100) and the container is located between the front (110, 100) and the back (110, 100) wall edges.
8. Suction pump unit according to claim 7, with the fluid storage tank (2) held in a lower area between the wall edges (110, 100) to be rotated and in an upper area to be locked by the pump unit housing (1).
9. Suction pump unit according to claim 8, with a back-up (14) that is soluble via a release element (13) from a fixture attached to the fluid storage tank (2).
10. Suction pump unit according to one of claims 8 or 9, with the fluid collection tank (2) at the bottom of the tank capable of being connected to the pump unit housing (1).
11. Suction pump unit according to one of claims 8 to 10, where the container (2) has protruding nozzles (21, 21') and the housing (1) has lateral back-guides (115, 116) which can be moved together in the interlock.
12. Suction pump unit according to one of the claims 7 to 11, where the pump body (1) has a support surface to be placed on a surface and the fluid storage tank (2) ends with its bottom above this support surface.
13. Suction pump unit according to one of claims 7 to 12, with the fluid collection tank (2) only one side above the pump unit housing (1).
14. Suction pump unit according to one of the claims 7 to 13, with a patient tube (3) connection in the front wall (11).
15. Suction pump unit according to one of claims 7 to 14, with a vacuum connection (18) and a secret connection (19) located in the side wall (16) of the pump unit housing (1).