DEVICE AND METHOD FOR TREATING THE MEDICAL LIQUID AND THE MEDICAL CASSETTE

This invention relates down the device for processing of medical liquid, which contains the processing machine with the connecting surface, in this case the cassette from the rigid part with the channels conducting liquid, which are covered for the sake of flexible film, is provided, and this cassette is executed with the possibility of connection for the sake of the connecting surface of that processing.

Furthermore, this invention relates down the cassette from the rigid part with the channels conducting liquid, which are covered for the sake of flexible film, in this case the cassette is executed with the possibility of connection for the sake of the connecting surface of the processing machine. Furthermore, ane invention relates down the method of connecting cassette from the rigid part for the sake of the channels conducting liquid which they are covered for the sake of flexible film, with the connecting surface of the processing machines for the purpose working of medical liquid, and also to the method of the pressure leak test of such medical of.

In this case the processing machine can be the machine of of working the blood, such as, for example, utilized with hemodialysis or with peritoneal machine. Medical cassette contains with this use those conducting the blood, correspondingly, dialytical liquid channels and is connected through the connecting surface with the actuating mechanisms and the sensors of the processing machine. Thus, medical cassette it is possible to perform in the form cheap single-time part, while actuating mechanisms for control besides fluid flow through the channels, and also sensors, for example, for determining of level or of the measurement of pressure are integrated beside processing.

In this case such executed in the form of single-time medical cassettes consist of thin-walled three-dimensional plastic rigid part with the flat circumferential adjacent edge and different deepenings (cameras, partitions and channels). Before formed by these three-dimensional structures of plastic rigid part cameras and channels can pass the medical liquids, such as, for example, the dialyzate or.

The plane of the adjoining of cassette is closed liquid-tight with of flexible film, preferably polymer film, which on the perimeter is connected with the adjacent edge of rigid part, in particular, it is welded and/or glued. With the use medical cassette is forced by flexible film against the connecting surface of the processing machine, so that actuating mechanisms and sensors fit closely down the polymeric of.

Additionally due to the pressing flexible film is pressed to the partitions of cassette and, thus ensures the impenetrable for the fluid separation of the conducting liquid channels before the rigid part with the aid of the partitions and the flexible film in accordance with this the connecting surface of the processing machine it has usually actuating mechanisms of and surfaces, which transmit the forces of pressing. In this case actuating mechanisms and sensors of the processing the blood machine before the connected state of cassette are located opposite down the conducting liquid channels of cassette due to this actuating mechanisms they can form by means of pressing downward of film valves so that flexible film it is pressed beside the zones of the conducting liquid channels it overlaps their sensors they measure, for example, the pressure and the temperature of located before the conducting liquid channels liquid. The transmitting the force of pressing surfaces force flexible film against the sealing partitions of rigid part which they surround the conducting liquid channels of of their packing relative to each other and relative to remaining cassette in this case connecting surface is usually formed by the flat surface of the carrier, which is executed for example, from the metal before which are provided the nests of of sensors and actuating mechanisms, and inserted flush beside these nests of.

Beyond the connecting surface of the processing machine flexible mat is usually located, for example, from silicone or another elastomeric material. has the advantage that the surfaces of sensors are protected based on the influence of environment, and additionally to this the surface of machine appears impenetrable of liquid and thus, provides the possibility of ideal hygienic cleaning. In this case flexible mat is the part of the processing machine, with which is connected the cassette as the single-time part. The work of actuating mechanisms is ensured due to the flexibility of mat. Furthermore flexible film can be forced well through the flexible mat against connecting surface, which ensures a good contact with the actuating mechanisms sensors and transmitting the forces of pressing surfaces. However, the processing machine can also work without the flexible mat, so that flexible film fits closely directly down the connecting surface, and sensors and actuating mechanisms are connected directly based on.

However, in connecting sensors for the sake of surface film before the known systems is a difficulty of achieving a good connection for obtaining the correct measuring values. In particular, air, which occurs concluded in the transition section between the flexible film and the surface of sensor with the stacking of cassette, leads down the distortion of the results of measurement it relates down the pressure sensors (in particular with the measurement of pressure, which less than the ambient pressure), also as to the determination of level, and also to the actuating mechanisms by such as, for instance, valves. Therefore in connecting it is necessary to remove undesirable trappings of air between external surface film and adjacent surface of flexible mat and, correspondingly, if mat does not adapt by the adjacent connecting surface of the processing machine. Usually this is achieved due to the suction of air. However, in this case it is difficult to achieve contact on the fluid with this space in particular, there is a problem, that due to the adjoining of film down the mat, correspondingly, of connecting surface occurs the doubling-up of film, so that remain the islets of.

Poet from DE 101 of 57 9241 and DE of 102 24 750 Al is noted for the realization of the air outlet with the aid of integrated B the mat of channels on the inverted to the machine back of machine mat. In this case the passage of air from the surface of the flexible film concerning the mat to the air ducts located beyond the side of machine occurs locally through the passage cuts in the Canal Zone of mat. However, due to this occurs the air outlet only in the accurately assigned places of the flexible film of the cassettes, before which air is drawn off through the cuts before the mat to the channels of mat located beyond the side of machine; Therefore these channels of mat must be located before the zone of the conducting liquid channels of the cassette of of the guarantee of a there good suction that it is possible to lead down the problems of reliability. Furthermore, this machine mat with the integrated beside the mat channels and the cuts is expensive before the production and requires the high labor inputs during cleaning. The surface of sensors also not is protected based on the influences of environment and not it is airtightly closed from the mat, so that appear also hygienic problems. Furthermore there is a need at the point of the improvement in the reliability of the suction of air, since due to only the local suction through the cuts can nevertheless remain the starts of.

Therefore the task of this invention is the guarantee of a cheap, reliable and hygienic suction of.

This problem is solved according to invention with the aid of the device for treating the medical liquid on point 1 formula of invention. It contains the processing machine with the connecting surface; moreover this connecting surface of the processing machine is made with the possibility of the connection to it of cassette from rigid part with the channels conducting liquid, which are covered for the sake of flexible film. In this case, according to invention before the connected state of the cassette between the flexible film and the connecting surface, at least, in the individual sections is located the layer from permeable of air of the porous material, which is ensured the possibility of the suction of air IIQ of ~~~I~~~ of ~o~tp~~ocT~ Bo the time of the process of connecting and/or with the connected cassette. Thus, according to invention air is drawn off not as before the technological level is only point through the cuts before the flexible mat in some places, so that can remain the islets of air, but by means of the large surface through the layer from the porous material permeable for air. The possibility of suction along the entire surface of air from the zone between the flexible film and the connecting surface is ensured due to this, in this case reliably are prevented the trappings of air, which ever cannot be excluded with only the local suction. Furthermore, it is possible to forego the badly being yielded to cleaning flexible mat with the channels, and it is possible to use flexible mat actually without the passages or to not at all use.

In this case, it is possible according to invention that already during the process of connection, in particular, not long before the end of the process of connection, it is possible by especially favorable means to draw off air. In this case with the connection of cassette the pressure of pressing increases about maximum value. Furthermore, suction can be begun as soon as cassette will fit closely down the connecting surface, but before cassette it will be pressed with the maximum force. already during this short phase it is possible to create rarefaction. In particular porous material, correspondingly, its shaping, before this phase yet not is so highly-compressed and, thus better passes air. However, a suction of air can be achieved also with that completely connected of.

In this case~[titelno] is ensured the possibility of the suction of air from permeable of air of porous material along the plane of layer. The possibility of the air outlet along the connecting plane is ensured due to this, whereas actuating mechanisms and sensors simultaneously can influence perpendicularly down connecting plane. In this case is sufficient to ensure contact on the fluid with the space between the film and the connecting surface in one or several places of suction and the connection for the sake of the suction device, moreover air from there is drawn off by means of the large surface along the connecting plane. If mat is provided, then this flexible mat, which does not have other passages, it can have in the afore-mentioned or several places of opening for the contact on the fluid with the permeable for air porous of.

Through the layer from the, in particular, porous material permeable for air, rarefaction for the suction it can act in this case before the entire zone of layer from the permeable for air porous material, which provides the possibility of reliable suction along entire surface. In this case the material of layer is preferably IT[ronitsaemym] for air both along the principal plane of layer and across the principal plane of.

Due to this air outlet it can occur, in particular, also in the layer of material along its principal plane, due to what air reliably is drawn off between the surface of flexible film and the connecting of.

In this case the layer from the porous material before the connected state of cassette permeable for air is preferably located directly beyond the flexible film. The direct suction of air of the surface of flexible film is ensured due to this, so that it is ensured the possibility of the reliable of.

Furthermore, layer from the porous material permeable for air contains non-woven material. In this case this non-woven material provides the possibility of the above-indicated air outlet, it ensuring uniform contact between the connecting surface and the film and, thus, between the sensors and the mechanisms and the film, but simultaneously ensures surface suction in the plane between the flexible film and the connecting surface, correspondingly, for the sake of flexible mat furthermore, layer from the porous material permeable for air is preferably located along entire surface beyond the flexible film. Thus, is ensured the cheap and simple possibility of the suction of air through the executed along entire surface layer from the permeable for air porous material. However, for the specific applications it is possible to also provide for this layer from the permeable for air porous material only on separate.

Furthermore, cassette before the connected state is preferably forced against connecting surface, in this case during the process of connecting and/or with the connected cassette transferred through the layer from the permeable for air material perpendicular down its plane the pressure presses film for the fluid to the conducting liquid channels of the rigid part of the cassette, however, layer from the permeable for air porous material it impenetrably remains permeable for air along its plane. Thus, layer from permeable for air porous~[eriala] can transfer pressure necessary for hermetically sealing the conducting liquid channels, due to interaction between the partitions of rigid part and the film, which is forced against partitions. However, simultaneously it remains permeable for the gas along its plane and it ensures thus, the surface suction of air between film and connecting of.

Furthermore, the processing machine preferably has the located beyond the connecting surface flexible mat in particular silicone mat, and cassette is executed with the possibility of connection for the sake of the connecting surface of the processing machine through flexible.

B that preferable version of fulfillment the processing machine has the located beyond the connecting surface flexible mat in this case cassette it is executed with the possibility of with the connecting surface of the processing machine through the flexible mat, N before the connected state of the cassette between the flexible film and the flexible mat is located layer from the permeable for air material, due to this flexible mat can hermetically seal liquid-tight connecting surface and, thus, to create especially simple for the cleaning and hygienic system, while suction occurs through~[olozhennyy] between the flexible mat and the flexible film the permeable for air layer this as the material for the flexible mat it is possible to use silicone or another suitable elastomer. As the permeable for air layer M0KHQ to use, as noted above the layer of the porous material, such as, for example, non-woven.

However, before this invention due to the surface suction of air along the connecting plane it is possible also to forego the flexible mat between the flexible film of cassette and the connecting surface of the processing machine, and to provide only layer from permeable of air of porous material, similar as, for instance, non-woven material, so that the flexible film of medical cassette fits closely directly down the connecting surface of the processing machine through the layer from permeable of air of porous material without the mat lying between them, and the suction of air occurs directly between the connecting surface and bending of.

Furthermore, this invention relates down the device for processing of medical liquid which it contains the processing machine with the connecting surface and the located beyond the connecting surface flexible mat, moreover~[a] cassette from the rigid part with the conducting liquid channels which are covered for the sake of flexible film, and cassette is executed with the possibility of the connection through the flexible mat for the sake of the connecting surface of the processing machine, the flexible mat consisting of permeable of air of material and is executed so that during the process of connecting and/or with the connected cassette air it is drawn off in the zone of flexible mat without the apertures, namely, along the plane of flexible mat and/or through flexible math. due to the application of the permeable material of mat it is possible to forego the additional layer from the material permeable for air, since the surface suction occurs through itself of of math. Supply of rarefaction can be accomplished in this case through the appropriate channels in the connecting surface of the processing machine. Since the thin silicone layers have the specific permeability for air, it is possible to form flexible mat from silicone and to carry out by its very thin before the zones, in which air must be drawn off, so that due to the application of the corresponding high rarefaction it is possible to draw off air by mat it is lengthwise drawn off surface it ensures also air it prevents, directly through math. thus, it is possible to turn from the cuts to mat, which hamper cleaning. Furthermore, surface is hermetically sealed by liquid-tight of.

B the quality of alternative solution or additionally to the above-indicated layer from the permeable for air porous material or the flexible mat from permeable of air of material, surface film the, correspondingly, inverted to the film surface of flexible mat can have a shaping, through which it is possible to draw off.

Therefore this invention proposes also the device for processing of medical liquid, which contains the processing machine with the connecting surface, moreover is provided cassette from the rigid to ~[asti] with the channels conducting liquid, which are covered for the sake of flexible film and cassette is executed with the possibility of the connection through the flexible mat for the sake of the connecting surface of the processing machine. In this case the surface of flexible film has according to invention a shaping, through which during the process of connecting and/or with the connected cassette it is possible to draw off air along shaping of film. Thus, possibly also the reliable suction of air from the zone between the film and the connecting surface, correspondingly, of connecting plane, through the formed due to the film channels. Thus possibility that moreover air of shaping shaping surface suction very, the formation of the islets of air; moreover it is provided, at least, in the zones where connection free from air is necessary. In this case shaping surface film appears preferably sufficiently to small, so that do not appear or appear only minimum deviations before the effort of pressing between the flexible film and the partitions of rigid part; however,~[no] large, so that the appearing due to the shaping channels completely would not be closed due to between the connecting surface, correspondingly, by mat and film and they would remain those conducting.

In this case shaping can be accomplished by means of the stamping of surface film. However, as the alternative solution, shaping film can be carried out directly with the extrusion of.

Furthermore, it is possible to carry out shaping on the side of flexible mat inverted to the film. Therefore this invention proposes also the device for processing of medical liquid, which contains that processing by surface and by that located beyond by flexible mat, in particular, machine based on the connecting connecting surface by silicone mat, moreover cassette from the rigid part with the channels conducting liquid, which are covered for the sake of flexible film, is provided, and cassette is executed with the possibility of the connection through the flexible mat for the sake of the connecting surface of the processing machine. According to invention in this case the surface of flexible mat inverted to the flexible film has a shaping, through which during the process of and/or with the connected cassette it is possible to draw off air along shaping of flexible mat in this case the suction through shaping of the surface of flexible mat occurs exactly as the suction through shaping of flexible film which it was described.

However, shaping film has in comparison with shaping of that inverted to the film of the surface of mat the decisive advantage that the inverted to the film surface of mat can be carried out by smooth, whereas and it easy to clean cassette is, on the contrary, single-time, so that there is no need for its cleaning after use, it is simple.

Is given below the description of the preferable versions of the fulfillment of the shapings, which can be used both for shaping of flexible film and for shaping of the surface of mat preferably, shaping has grid structure and/or meander and/or linear structure. With the aid of the grid structure, in particular, preferably honeycomb structure, it is possible simply and reliably to draw off by means of the large surface air. In contrast to this, with the aid of the meander structure it is possible to carry out the goal-directed suction in the specific zones furthermore, shaping is preferably executed by anisotropic and/or homogeneous. Due to the selection of the suitable structure it is possible to realize anisotropic suction, the greater that for example, channels are from left to right executed than from top to bottom structure can be also executed beyond the surface homogeneous due to this it is possible to, for example, ensure the uniform suction of air in the surface, even when space between the film and the mat connected with thecbIB[ayuim] device along the fluid only in one place at the point of important for the attainable power of suction during this shaping appears the ratio of depth to the width of channels. In this case preferably the width of channels is lower than their depth. Due to the execution by narrow and deep of narrow deep channels the channels are not closed during pressing of film and mat, so that remains the possibility of suction the flatter they appear channels, the greater the danger of packing due to the partial adjoining of film down the mat. If channels are too wide that additionally increases the danger of the fact that the pressing on smooth rear~[orone] of film according to the partitions of rigid part becomes too not homogeneous, and on this side can occur the leakage between the conducting liquid channels before the different version of fulfillment shaping surface film or surface of mat it can pass the lengthwise conducting liquid channels due to this necessary to evacuate altogether only a small volume, is so that shortened the time of suction, correspondingly, time for the initial checking of.

Furthermore air is drawn off only, where is actually necessary contact without the trappings of air between the film and the flexible mat in contrast to this, in the zones without the conducting liquid channels this airless connection not of.

Therefore shaping can preferably pass in the form meander and/or the lines of the lengthwise conducting liquid channels however in this case shaping preferably converges in one or several zones of the outside conducting liquid channels, which form the points of suction. Thus, in these zones of the outside conducting liquid channels it is possible to achieve simple connection, for example, for the sake of the suction device the passing from the point of suction beside the zones of the conducting liquid channels shaping, while ensures the reliable suction of air from these.

In this case the shaping preferably passes to passage from the zone with the channels beside the zone of the outside conducting liquid channels conducting liquid actually perpendicular down the edge of the partition of channel. Due to this is ensured the uniform pressing of film according to the edges of the partition of channel without the loss in this case by shaping its function of the air outlet because of.

Preferably, shaping in the zones, in which it does not intersect the edge of the partitions of channels, is passed at a distance from the edges of the partitions of channels. Thus, shaping is capable of fulfilling the function of drainage only in the zones of film where technologically necessarily moistening for the sake of liquid. For remaining zones there is no need for the suction of air due to the high pressure of pressing between film and rigid of.

Furthermore, shaping preferably executed so that between the zones of film with different conducting liquid channels does not exist direct connection. With the break of film this has the advantage that the liquid cannot spread along the shaping throughout entire cassette. In particular, the breaks of film in the zone without the channels conducting liquid remain without the consequences. Even with the break of film in the zone of the conducting liquid channels liquid is drawn off along the shaping only to the point of suction, while it is prevented the leakage through the edges of the partitions of the channels between those conducting the liquid of.

However, a good and reliable pressing also during the application of a honeycomb structure, which does not, naturally, pass the lengthwise conducting the liquid channels, and before which shaping is not always passed perpendicularly down the edges of the partitions of channels after the advantage of this fulfillment it appears the possibility of simple and cheap.

Preferably, cassette before the device according to invention is forced before the connected state against connecting surface; moreover film is pressed with the hermetic sealing on the fluid to the conducting liquid channels of the rigid part of the cassette however shaping along its plane it provides the possibility of the outlet of.

Furthermore, this invention proposes the device for processing of liquid, which contains the processing machine with the connecting surface and the flexible mat located beyond the connecting surface in particular, the silicone mat, moreover cassette from the rigid part with the channels conducting liquid, which are covered for the sake of flexible film, is provided, and this cassette is executed with the possibility of the connection through the flexible mat for the sake of the connecting surface of the processing machine. In this case according to invention during the process of connecting and/or with the connected cassette is ensured the possibility of the suction of air of the wills of the plane between by film and inverted to the flexible film surface of the flexible of.

Due to this it is possible to turn from the supply of flexible mat as far as complex to production and badly being yielded to cleaning channels and by cuts. And what is more air can be reliably and simply drawn off between the surface of mat and the flexible film. In this case the suction preferably is achieved through, on to measure, in the hotel sections layer from the permeable for air material, or through shaping of flexible film or surface of mat. Due to this are ensured already indicated higher than.

Thus, according to invention air no longer is drawn off as before the technological level, it is only point through the apertures before the flexible mat in some places, but by means of the large surface along the plane between the film and the mat. For this it suffices to provide connection on the fluid of space between the film and the mat in one or several places for the sake of the suction device, in this case air is drawn off from it by means of the large surface along the plane of the connection between the film and of.

Thus it is possible to forego the expensive fulfillment of flexible mat with the channels before the Ger. additionally to this, is ensured the reliable airless connection between the film and the mat, in the absence cuts before the mat, so that again it is ensured impenetrable of liquid and, thus, the ideally hygienically cleaned surface of.

In this case the suction of air is achieved through the structure, which is located in the zone between the flexible film and the flexible mat. Thus, is ensured the passage of air along the connecting plane while simultaneously actuating mechanisms and sensors can perpendicularly down connecting plane. In this case the discussion deals, in particular, preferably about the flat structure, this as, for example, already indicated layer from the permeable for air material, correspondingly, for the sake of shaping of surface film or mat. The possibility of the suction of air from this zone along entire surface is ensured due to this, moreover reliably are prevented the trappings of air, which ever cannot be excluded with only the local of.

Furthermore, a device according to invention preferably has at least, one suction device. With the aid of this suction device it is possible to create the rarefaction, which is applied to the zone between the flexible film and the flexible mat respectively, the connecting surface and, thus ensures suction. In this case to preferably have several suction devices for~[sheniya] of the possibility of testing the suction device furthermore, before the device according to invention, regardless of the fact, with the aid of what structure is realized the suction by means of the large surface, conducting air layer is connected along the fluid in one or several places out of the zone of the conducting liquid channels with the suction device. Since the suction occurs along the connecting plane, according to this invention greater there is no need for the connection of ~[o] to fluid directly in the zone of the conducting liquid channels for the sake of the of.

Furthermore, before~[roystve] according to invention suction preferably located of the machine of.

it occurs, on the connecting of 3[n] it is opened, to smaller measure, through one surfaces of that processing for example, due to pressing of cassette according to the connecting surface of the processing machine with the aid of the pusher and then automatically draws off air from conducting air of.

As the alternative solution, a suction can be achieved also through the cassette. In this case on the cassette there can be provided suction opening with the hydrophobic5[ranoy]. Therefore suction preferably occurs through one or several those located before the rigid part of the cassette of the suction openings, which~[titelno] are supplied for the sake of hydrophobic membrane. Due to this is ensured the possibility of simple contact on the fluid with conducting air of.

Furthermore, device according to invention preferably has optical sensor for the recognition of leakages in particular with the aid of the detection of moistening due to scattering of light. Due to this is ensured the simplified noncontact detection of leakages, in particular, before the connection for the sake of shaping surface film which changes its reflective properties due to the yield of liquid, that it is possible to measure with the aid of the optical sensor furthermore, device according to invention preferably has the control device, which ensures the automatic suction of air. In this case the control device governs the suction device and, thus, automatically provides connection without the trappings of air of cassette furthermore, control device preferably carries out theBTQMct[ticheskuyu] pressure leak test of medical cassette. This can be achieved, as it will be in more detail described below by means of checking of rarefaction with the suction of air furthermore, before the devices according to invention is preferably used, as noted above, the medical cassette, whose description is given.

Medical cassette according to this invention contains rigid part with the channels conducting liquid, which are covered for the sake of flexible film, moreover the cassette Of bbIIIQJIH|HB with the possibility of connection for the sake of the connecting surface of that processing.

In this case according to invention beyond the flexible film is located the structure, through which during the process of connecting and/or with the connected cassette it is possible to draw off air along the plane of surface film. Due to this it is possible to provide, as it was already in detail explained in connection with to device for treating the medical liquid, the possibility of the simple and reliable suction of air between the flexible film and the mat respectively, the connecting surface of the processing machine. In this case especially preferably, that the structure forms the component part of the medical cassette, since it is single-time part and therefore it is not subject to cleaning after use. Thus, structure for the suction of air also must not satisfy special requirements relative to the possibility of~[istki].

In this case on the flexible film, at least, in the individual sections is located the layer from that permeated for air, in particular, the porous material, through which before the connected state of cassette is ensured the possibility of the suction of air by means of the large surface along the plane of.

The advantages of this arrangement has already been indicated above in connection with the device. Layer from that permeated for air, in particular, the porous material, which is located beyond the flexible film, ensures the reliable and uniform by means of the large surface suction of.

In this case the layer from the material permeable for air is preferably located beyond the entire surface by bending.

Thus, realizes the favorable and simple arrangement, during which air can be drawn off along the entire surface between the flexible film and the connecting surface of the processing machine in this case the layer from permeable of air of material is preferably welded with the cassette in the circumferential limb zone. Due to this layer based on the permeable for air material forms common with the cassette and is retained on it. In this case welding layer from permeable of air of material preferably is accomplished at the point of one operation with welding of film with the rigid part thus, realizes cheap.

In this case the welding preferably forms impenetrable of gas barrier along the plane of layer. Therefore due to the welding it is ensured that along the plane of layer air is drawn off only in the zone before which the cassette it is forced against the processing machine. In other respects, air can be drawn off from the lateral zones due toG it is prevented deaeration from the zone between the film and the processing machine. In this case it is possible to use that the fact that with the sticking of layer from the permeable for air material down the film, the structure of layer from the preferably porous material changes so that it appears the impenetrable for the gas barrier. Thus, in this place with the aid of the flexible mat or connecting surface occurs hermetic sealing that being relatively becoming in this place at the point of those not penetrated for air of layer. Layer from the permeable for air material~[itelno] is welded with the rigid part of the cassette. For this layer from the permeable for air material it is preferably made from the material, which is suitable for the welding with the plastic based on KGTQpoN it is prepared the rigid part of.

As the alternative solution or additionally, the rigid part of the cassette can have the circumferential limb zone, along which does not pass the structure, in particular, layer from the material permeable for air, so that this limb zone during the pressing forms sealing partition. This formed by limb zone without the structure sealing partition ensures that from the space between the film and the mat, correspondingly, by the connecting surface of the processing machine it is possible to reliably move away air in particular this of in the limb zone of cassette it is possible to forego the layer from the material permeable for air or.

Furthermore, in this case flexible film is preferably welded in the circumferential limb zone with the rigid part of the cassette. Thus, this circumferential limb zone can be used as before the technological level based on one side, for the welding with the flexible film and, based on the other side, to serve as the sealing partition for the structure furthermore before this invention the layer from the material permeable for air is preferably connected with the film in particular, it is glued and/or point welded and/or masked, and/or laminated, and/or nailed to it. Due to this is ensured the reliable confinement of layer from the permeable for air material on the flexible film, for example, even when layer it is not welded in the limb zone with the rigid of.

Furthermore before the medical cassette according to this invention transferred during the process of connecting with the connected cassette through the structure, in particular layer from permeable of air of material, perpendicular down its plane pressure preferably presses film with the hermetic sealing on the fluid to the channels of the rigid part of the cassette conducting liquid. In contrast to this, structure, in particular, layer from the material permeable for air remains permeable for the gas along its plane. Thus, the most reliable possible pressing of film according to the rigid part, during which do not appear the leakages between the conducting liquids channels however in this case it remains possible the reliable suction of air through the surface structure. This due to the appropriate fulfillment of the layer of the material, for example, of non-woven material, or due to the appropriate fulfillment of shaping surface by bending.

Furthermore layer from permeable of air of material preferably contains non-woven material. This non-woven material is optimum for the uniform pressure propagation and is suitable for the suction along its of.

Before one other example of fulfillment the surface of the flexible film of medical cassette according to this invention preferably has a shaping, through which it is possible to draw off air before the connected state of cassette along the plane of film due to this as far as simple means is reached the possibility to reliably move away air from the zone between the film and the mat, correspondingly, between the film and the connecting surface of the processing machine without the formation of the trappings of air or islets of air. In this case the arrangement of shaping beyond surface film has special advantage, since the cassette after application simply is utilized, and thus, there is no need for its.

As has already been indicated above in connection with device for treating the medical liquid shaping it has in this case preferably grid structure and/or meander, and/or linear structure. Furthermore, shaping is preferably executed by anisotropic and/or homogeneous. Also preferably the width of the channels formed due to the shaping is lower than the depth of these channels, since they must not be shut during the pressing according to the processing machine, but, nevertheless to provide the possibility of the uniform pressing of the smooth back of film according to the partitions of the rigid of.

Before other preferable example of fulfillment the shaping passes the lengthwise conducting channels, moreover adapts, structure. Due to.

Further in particular, meander either linear this decreases the volume, which is subject the elements of shaping they preferably converge together in one or several zones of the outside conducting liquid channels, which form the points of suction. Due to this it is possible to carry out in this zone simple suction, while with the aid of shaping of the lengthwise conducting liquid channels is provided the connection without air before this of.

Shaping preferably passes to passage from the zone with the channels beside the zone of the outside conducting liquid channels conducting liquid actually perpendicular down the edge of the partition of.

Due to this is ensured the uniform pressing of film according to the edges of the partition of channel with the simultaneous good suction of air preferably, shaping in the zones, in which it does not intersect the edge of the partitions of channels, are passed by n distance based on the edges of the partitions of channels. Spreading liquid in the case of break along the shaping throughout entire cassette can be prevented due to this. Furthermore better pressing of film according to the edges of the partitions of channels furthermore shaping is preferably executed so that between the zones of film with different conducting liquid channels there is no direct connection. With the break of film this has that advantage that liquid it cannot be extended along the shaping throughout entire cassette. In particular, breaks in the zone without the channels conducting liquid also remain without the consequences. to with the break of film in the zone of the conducting liquid channels, liquid is sucked along the shaping only to the point of suction, while it is prevented the leakage through the edges of the partitions of the channels between those conducting the liquid of.

Furthermore, rigid limiting sealing closed with part preferably has partitions, which connect the boundary partitions of channels and they form airtightly pressing zone. In this case the place of suction preferably lies against such hermetically sealed during the pressing zone, so that with the break of fluid film of leakage reaches only this zone, and is impossible direct contact between those separate conducting the liquid of.

Furthermore, medical cassette according to invention preferably has, at least, one located beyond the rigid part of the cassette suction opening. Through this suction opening can be achieved the contact on the fluid space between the film and the mat, correspondingly, by a surface with the fir tree of suction. Due to this it is possible to carry out flexible mat on the side of machine by continuous and, thus, ideally suitable for.

opening is preferably located out of the zone of the conducting liquid channels of cassette. The safety rises due to this, since the damage of welding only during the simultaneous break of before the place of channel or the simultaneous damage of sealing partition causes the pollution of the suction device of the, correspondingly, located before the suction channel hydrophobic of.

Flexible film is preferably welded around the suction opening with the rigid part of the cassette in this case the circular weld around the opening it preferably has a shaping in order not to have a negative effect beyond the suction of air due to the weld this especially importantly by shaping of surface film it can be achieved, for example, with the aid of the appropriate structuring of the welded of.

As the alternative solution or additionally the zone of the weld can be omitted also relative to the plane of pressing cassette. Due to this it is possible to also prevent the negative influence of the weld beyond the suction of air. especially preferably, in particular, also during the application of a layer from that permeated for air of.

Furthermore, beyond suction~[ii] is preferably located hydrophobic filter. In this case the suction opening or the suction openings are closed liquid-tight with the aid of one, correspondingly, several hydrophobic filters hydrophobic filters they are liquid-tight and it is simultaneously permeated for.

Furthermore, this invention proposes the method of connecting cassette for the sake of the processing machine, which provides the possibility of reliable connection without.

In this case this invention proposes the method of connecting cassette from the rigid part for the sake of the channels conducting liquid, which are covered for the sake of flexible film with the connecting surface of the processing machines for treating medical liquid, that contains the following stages: the connection of cassette for the sake of the connecting surface of the processing machine and the suction of air between the flexible film and the connecting surface of the processing machine during the process of connecting and/or with the connected cassette, in this case suction occurs by means of the large surface through that located, at least, in the individual sections between the flexible film and connecting surface layer from permeable of air of porous material. The stages of connection and suction it is possible in this case to carry out either above each other or, at least, partially simultaneously, during the process of connecting because begin suction B the quality of alternative, a suction can be achieved also along the shaping beyond the surface of flexible film and/or along the shaping beyond the inverted to the flexible film surface of the flexible mat, through which the cassette is connected with the connecting surface. Due to this are ensured already indicated above in connection with the device of advantage, in particular, the reliable suction of air from the zone between the flexible film and the connecting surface of that processing.

Furthermore the method of connecting cassette from the rigid part for the sake of the channels conducting liquid, which are covered for the sake of flexible film, with the connecting surface of the processing machines for treating medical liquid, that contains the stages, is proposed:

the connection of medical cassette for the sake of the connecting surface of the processing machine through the located beyond the connecting surface flexible mat, the suctions of air between the flexible film and the flexible mat during the process of connecting and/or with the connected cassette, in this case suction in the zones of flexible mat occurs without the cuts, namely along the plane of flexible mat and/or through the flexible mat, for which mat is made from that permeated for air of.

Furthermore, according to this invention is proposed the method of connecting cassette from the rigid part for the sake of the channels conducting liquid, which are covered for the sake of flexible film with the connecting surface of the processing machines for treating medical liquid, that contains the stages of the connection of medical cassette for the sake of the connecting surface of the processing machine through the located beyond the connecting surface flexible mat, in particular, silicone mat, and the suction of air between the flexible film and the flexible mat during the process of connecting and/or with the connected cassette, in this case the suction occurs along the plane between the flexible film and the surface of flexible mat inverted to the flexible film. The above-indicated advantages also are ensured due to this. In particular, in this case flexible mat can be carried out especially easily, also, with the possibility of the simple of.

In this case before the method according to invention preferably adapt medical cassette and/or device for treating the medical liquid, whose description is given.

Furthermore, according to this invention is proposed the method of the leak check of medical cassette from the rigid part with the channels conducting liquid, which are covered for the sake of flexible film, in particular before the filling of medical cassette containing the stages of the connection of medical cassette by the connecting surface of the processing machine, suction of air between the flexible film and the connecting surface of the processing machine during the process of connecting and/or with the connected cassette, in particular, suction by means of the large surface, the leak check of medical cassette for the sake of the use of the appearing rarefaction, in this case the leak check occurs during or after connecting.

Since in the case of leakage before the film with the suction of air the rarefaction cannot appear, according to invention it is possible to reveal and to reflect too great a leak rate by means of checking of rarefaction and of rarefaction with the suction of air. Thus, it is possible to reveal the leakage through the film, first of all before the filling of liquid and before beginning working. Therefore it is possible to substitute defective single-time cassette by proper cassette. Thus, due to the continuous evacuation is ensured the possibility of detecting the nonhermetic state of film and replacement of the defective single-time of.

This is facilitated, in particular, due to the suction by means of the surface according to this invention. In contrast to this, without the suction by means of the large surface the doubling-up between the film and the mat, which would hamper.

, would occur Before this method preferably are used medical cassette and/or device for treating the medical liquid, whose description is given.

Is given below the more detailed explanation of the invention on the basis of examples of fulfillment with the references down the accompanying drawings, on which it is represented:

fig. 1 device for treating the medical liquid, according to the level of.

fig. 2 device for treating the medical liquid, according to the first example of the fulfillment of this invention; fig. 3 device for treating the medical liquid, according to the second example of the fulfillment of this invention; fig. 4 shaping, according to the third example of the fulfillment of this invention, top view and in the section; fig. of 5[a] - medical cassette according to the fourth example of the fulfillment of this invention, top view; fig. 5b section of shaping in the zone with the sealing partitions; Fig. of 5[s] the section of the suction opening, according to one example of the fulfillment of invention; and Fig. b device for treating the medical liquid according to the fifth example of the fulfillment of data of.

On Fig. 1 is shown the device of of working medical liquid, known from the technological level, for example, for the application for hemodialysis or peritoneal dialysis. However, such devices can be used, also, in many other cases of the applications, in which are used the single-time cassettes, which are connected through the connecting surface with the sensors and by the actuating mechanisms of that processing.

Processing machine 1 has connecting surface of 10, beyond which is located, for example, sensor 11 cassettes 2 it contains rigid part of 20 with conducting liquid channel 21, which is covered for the sake of flexible film 25, moreover the conducting liquid channel through located across the sides sealing partitions 22 which are forced against flexible film 25, it is isolated airtightly on the fluid inside the cassette. In this case sensor 11 lies on the contrary conducting liquid channel 21 which form measurement chamber, in the case of of pressure the camera of the measurement of pressure between film 25 and connecting surface of the processing machines 1 on the side machine is located flexible silicone mat 15 for the purpose of the protection of the sensitive surfaces of sensor 11 from the influences of environment. Furthermore, due to this the surface of machine is airtight and, thus, it is ideally suitable for the hygienic cleaning however as the~[ernativnogo] solution, it is possible also to forego silicone mat 15, so that film 25 fits closely directly down the connecting surface of 10 processing machines 1 however in connecting sensors for the sake of the film of cassette 2 difficult to connect film with the sensitive surface of~[ika] 11 so as to obtain the correct values of measurement. In particular, air, which is concluded before the transition section between the film of cassette and the sensitive surface with the installation of cassette, leads down the distortion of the results of measurement. This relates down the pressure sensors but also, for example, to the sensors of level and down the actuating mechanisms similar as, for instance, the valves, which due to the depression of flexible film 25 beside the conducting liquid channels of 21 rigid part of 20 govern fluid flows inside the cassette the first example of the fulfillment of this invention it is shown on Fig. 2 in this case the flat structure between film 25 and mat it provides the possibility of the surface suction of air along the plane of connection this it is ensured reliable deaeration from the space between film 25 and mat 15 with the exception of the formation of the islets of air due to the self sealing by means of the adjoining of film 25 down mat 15 and without the distortion of the results of.

In this case before the example of fulfillment shown on Fig. 2 surface suction fact that between film 2b and mat 15 is packed layer 30 of that permeated for air, in particular, porous material, B this case of non-woven material. This layer of non-woven material is porous due to its structure, i.e., air it can pass to this layer by means of the large surface, even when entire unit from film 25, non-woven material 30 and mat 15 is highly-compressed, for example, by the sealing partitions of 22.

Thus, between film 25 and rigid part is obtained the liquid-tight connection by pressing, moreover layer 30 of that permeated for air, in particular, porous material nevertheless remains permeable of of.

Thus, it suffices to carry out contact of space between film 25 and mat 15 before the place through suction opening 28 on the fluid with vacuum system 13 in order and by means of the large surface to move away air from entire space between film 25 and mat 15. Due to this it is possible reliably, also, without the trappings of air to connect several sensors 11 or actuating mechanisms with film 25. thus, the connection of the filled for the sake of non-woven material space with the vacuum system it is possible to use immediately after pressings also for the pressure leak test of film, which would be impossible without such conducting air of.

In this case suction opening 28 before the first example of fulfillment integrated beside the rigid part of 20 cassettes has before the suction channel hydrophobic membrane 24, which is also integrated beside the rigid part. Due to this it is possible to prevent the pollution of machine in the case of the break of film. In this case suction opening 28 before the rigid part of 20 cassettes with piling of cassette beside the processing machine is connected through sealing element 14 with the suction channels integrated beside the door of 12 machines, which are in turn connected with the vacuum system 13 films it has around suction opening 28 circumferential welding with the rigid part. In this case the zone of circumferential welding is omitted relative to the plane of pressing cassette, so that welding the layer of 30 non-woven materials with the rigid part does not form barrier for the suction of.

In this case the contact of the space of non-woven material on the fluid occurs outside conducting of the regions of channel structure 21 thus, the malfunction of welding between the film and the rigid part around the suction opening can lead down the pollution of hydrophobic membrane only with the simultaneous break of film before the place of channel or with the simultaneous destruction of the sealing partition of 22.

On Fig. 2 is shown the second example of the fulfillment of this invention, with which the contact on the fluid is achieved not of the rigid part of 20, but based on the side of mat. In this case before mat 15 is provided the opening, which through valve 16 with the vacuum system 13 this case the contact conducting air layer 30 connected occurs also out of the zone of conducting liquid channel structure 21 in this case rigid part of 20 it has a pusher 29 which opens valve 1B with the stacking of cassette beside the processing machine. In this case the cassette has circumferential sealing partition 27, on which is not provided the layer of 30 non-woven materials, there is so that a closed outside space between film 25 and mat from which it is possible to draw off air without the penetration outside air of.

As the alternative to the shown for fig. 3 solution, excessive penetration of air of leakage beside the system it is possible to prevent also with the aid of other fulfillments of circumferential sealing edge. In this case it is possible to use, for example, that the fact that welding non-woven material 30 with film 25 changes the structure of non-woven material so that it appears the impenetrable for the gas barrier. Thus, impenetrable for air non-woven material 30 in this place can be compressed impenetrably for air with the silicone mat 15 the ideal case this welding is accomplished before one working operation together with welding of film with rigid part of 20. of this non-woven material to preferably carry out besides to be welded with the rigid part material, for example, from (polypropylene).

Another possibility consists besides of non-woven material less than film, so that it is possible to accomplish circumferential hermetic sealing directly between the film by silicone mat. In this case fastening non-woven material on the film can be accomplished, for example, with the aid of the gluing, and/or the spot welding, and/or, and/or lamination and/or. Furthermore, it is possible before the first working operation to connect film and non-woven material, before the second operation to and then create connection for the sake of the rigid part as the alternative to the application of the fulfillment of non-woven material shown before the first and second examples, is possible to ensure of air in the desired plane due to shaping of surface film 25 so that before film itself appears conducting air layer. This can be achieved, for example by means of the stamping of structure beside.

In this case before the third example of fulfillment before the film the lattice structure is pressed, so that before the film the network of the channels, which are isolated from each other by the zones of the of thicker of.

, appears Various geometric forms are possible, in this case on Fig. 4 honeycomb structure is shown as an example. Due to the selection of the suitable structure it is possible to realize also suction due to, for example, the execution of channels from left to right more than from top to bottom. It is possible to also carry out structure beyond the surface homogeneous. Structure can have also a form of.

With geometry this for attainable of suction it is important the appearing channels. Narrow, deep channels during pressing of silicone mat are not closed, so that remains the possibility of the suction through the channels the flatter they appear channels the higher the danger of packing due to the partial adjoining of film down the mat before the channels. If channels are too wide, then rises the danger of the fact that the pressing on the smooth side of film (from of the blood and rigid part) becomes too inhomogeneous and the leakages appear on this side. Together with the stamping it is possible to use other methods for obtaining shaping surface film. Thus, for instance, it is possible to introduce structure beside surface film directly with the extrusion of.

As the alternative solution, this shaping can be also located beyond that inverted to the film of the surface of mat 15. The possibility of the reliable suction of air also is ensured due to this. However, a drawback in this arrangement is that the surface of mat in this case is not more than and, thus, it hinders cleaning the surface of.

As the alternative solution, it is possible also during the application of non-woven material 30, or respectively, shaping surface film to forego silicone mat 15 so that non-woven material 30 is located directly between film 25 and connecting surface of the processing machine, correspondingly, shaped surface film 25 it fits closely directly the connecting surface those 10 processing.

With the structuring entire the surface film of cassette, correspondingly, due to the creation beyond the entire surface of the drainage layer between the plane of film and the connecting plane entire zone of the film of cassette up to the circumferential weld A of film, correspondingly, up to the external circumferential sealing partition (created on the side cassette or on the side of machine) becomes permeable for the gases and the liquids through all regular sealing partitions on the edges of.

Therefore with the checking of of film carried out first it is necessary to evacuate entire surface, and must be ensured also hermetic sealing circumferential sealing partition in parallel to the strictly desired hermetic sealing it is boundary channels, so that it would be possible to take up the working. Necessary for this an initial quantity of drawn off air and this necessary for time due to this increase, and decreases the reliability of the detection of the possible breaks of.

Therefore on Fig. of 5[a] is shown the fourth example of the fulfillment of this invention, with which is used the internal structuring shaped surface film. With the internal structuring only the moistened by liquid in accordance with the technology zones of film become capable besides the drainage. Compression between the outer side of film and the connecting plane is considerably less than compression on the sealing partitions on the edges of channels and in the not having liquid zones G and n. in these zones cassette has the flat, passing in parallel to film impenetrable bottom. While sealing partitions on the edges of channels are executed so that liquid in the normal case it cannot cross them, zones G and N are executed the so that penetrating liquid it does not find for themselves space, since the compression of rubber mat leads down the almost complete adjoining of film both to the plane of cassette and down the lowered plane of.

Since the compression between the film and the rubber mat in the moistened by liquid inner zones Sl S2 and is considerably less than compression in all remaining zones of film, in this zone is required the considerably less expressed drainage structure for provision both of the complete connection of film and complete Of kQHTpQJIH relevant surface film relative to possible breaks. In this case with the internal structuring can be provided shielding distance E from the edges based on the partitions of channels to the structuring D equal approximately maximally 1.

Zones 6 and N undergo sterilization and airtightly are shut from the environment. If during the working, i.e., after initial checking down the integrity nevertheless appear breaks before the zone B, then this remains, as a rule, without the consequences for the working, since the corresponding zones S are not affected and since there is no possibilities of of beside the zone G if break it occurs on the sealing partition of channel and as a result of the limits it as markedly by position F, then enters beside the action self sealing due to the strong compression between the smooth film and the smooth rubber mat and, furthermore, due to the additional compression along the circumferential edge. If during the working appears break before the inner zones S, then the fluid of leakage penetrates the space between the film and the rubber mat, decreases additionally the compression and in the final analysis is extruded along the anisotropic structuring E to the place suction with even composite zone N it is not only significantly filled up for the sake of the liquid of leakage, since the way through goal-directed guides of the I to the place suction ensures the smallest resistance of.

Internal structuring ensures the shorter time of detection and the higher accuracy of detection with checking of integrity before the filling for the sake of that processed of.

Internal structuring ensures excess passive leakage protection in the case of the first break of film internal structuring it ensures considerably smaller surface films and rubber mat which they can be wet with the break of film they can lead down the pollution by the finishing the surfaces workable liquid and vice versa. Internal structuring can increase reliability and decrease the time of the detection of the appearing break of film with the working and increases, thus, protection from pollution and cross pollution. Internal structuring can also decrease the probability and the sizes of the possible losses of liquid furthermore, is ensured the possibility of the anisotropic structuring: the anisotropy of the structuring of film or the fulfillment of intermediate drainage layers indicates different local fulfillment of the intensity of direction, functions and absence of drainage action. includes the above-indicated internal structuring by the structured limb zone to the sealing partitions of.

The following possibility is goal-directed of separate structural zones Sl S2 with the minimum number of the intersections X of the zones of sealing partitions on the edges of.

The number of intersections for the sake of the I shows so, as with the aid of the optimum structuring in the case of initial checking and in the case of leakage, that it is necessary to draw off, to respectively wet minimum.

On Fig. 5b in the section is shown the action of the linear structures, which intersect perpendicularly sealing partitions on the edges of channels. Due to this arrangement optimum hermetic sealing due to the compression on the side of liquid can be supplemented as far as the optimum retention of the depth of drainage structure on the side of machine. On Fig. of 5[] are shown with the strong exaggeration two principally negative fulfillments of structuring, namely, the partial mashing of the channels D of structuring and the disrupted due to not the homogeneous transfer of force pressing V to the sealing partitions on the edges of channels. Structurings, in parallel or at angle the sealing partitions, would more strongly penetrate the partition and the rubber mat and, thus, stronger they would decrease the drainage action and the action of.

One should also consider that in the specific places, for example, for the optical measurement of the dimness of liquid or in the places of passage for the ultrasound, it can be necessary that the film would remain smooth and/or transparent. In this case is created the window due to the absence of structuring or drainage.

Furthermore, are opened possibilities due to the application of the limiting partitions: if we add in the suitable places of channels and cameras connecting partitions J between the sealing partitions on the edges of channels, then are obtained new drainage structures closed during pressing Of.'s zone they converge in this zone, then this zone forms together with the zones Sl S2 liquid the overall zone, which is checked before the working or during the working down the presence of the breaks of film and which has for the possible liquid of leakage, correspondingly, for the possible pollution and the cross pollution the passive sealing compressed edge of channel as the boundary of zone. Any leakage must fall in the final analysis before this zone N, and here is located preferable region for the places suction with the detectors of leakage and with the hydrophobic shielding of.

Limiting partitions create the possibility of a certain decrease of the sealing action of compression before the points of the intersections of drainage structures with the sealing edges of channels for the support of the improved drainage operation (for example, due to the expansion of the sealing partition of the edge of channel) without the decrease of the action of the reliable hermetic sealing of.

ane invention creates the possibility of the noninvasive detection of the leakage of the blood: the solution to cover the connecting plane of machine for the sake of continuous protective layer, for example, from rubber, requires as the consequence of the fulfillment of the detector of leakage for the early detection of the breaks of film during the working in the form of the working instrument. This possibly, for example, through the thin rubber mat with the aid of the capacitance pickups, with the aid of the ultrasonic sensors or by means of the detection of the rarefaction disappearing with the leakage. On the side, opposite down connection, (on the side of cassette without the film) this is possible with the aid of optical with the reflective system. In this case, for example, with of the sensor of color it is possible to distinguish, did come out the blood or this only normal humidity in this case the structuring of film it is possible to use of the guarantee of detection of moistening due to scattering of light. With the dry film the scattered light is reflected from the structuring, which is absent, when structuring is moistened by liquid. With this system on the side without the rubber mat is eliminated also the need for the special fulfillment of the rubber of.

sensitive for the sensors Furthermore due to the specially structured welds and the rubber mats there are possibilities: in particular, in the place suction because of necessary for this circular welds around the hydrophobic membrane and around the groove for the hydrophobic membrane of the, correspondingly, suction opening before the film appears such problem, that both the structuring of film and the sticking of that lying from above the drainage layer (for example, from the non-woven material) with the aid of the seam are equalized also the annular barriers between the zones N are formed due to this and for eliminating the possibility of forming these barriers on Fig. of 5[s] is shown combination of four possible measures. Hole Q before the rubber mat decreases the sealing pressing according to the circular weld, just as hole R in the surface of.

Additional analogous action causes the local structuring B of rubber mat before the zone of hole by grooves and by the patterns, which will bridge before the radial direction the weld in several places with the guarantee of.

With both measures with the use of rubber mats appears worsening in the possibility of cleaning rubber mat to the structuring of rubber mat in the zone of the place of suction it appears the structuring of the circular weld. For this welding die is executed ring-shaped; however, this ring is executed by more conical than the corresponding welded on surface of cassette. Additionally to this, surface M is supplied for the sake of the ray-like located drainage edges, which with the welding lead down the common structuring of the bottom of cassette and film, which due to the conicity of the system of annular surfaces after welding has toothed annular surface with those directed radially outside, by the linear structures passing to the unwelded zones of film, which together with the already existing there ray structures form the general structure, which is no longer interrupted by the annular zone of the sealing of.

, On Fig. b is shown the fifth example of the execution of device for treating the medical liquid according to this invention, with which the suction is achieved not through the layer of non-woven material between flexible film 25 and flexible mat or with the aid of the appropriate shaping of surfaces, but due to the suitable selection of material before the most flexible mat for this flexible mat is made from permeable of air of material (for example, silicone), so that with of the applicable to the suction channels 40 rarefactions it is possible to draw off air between flexible mat 15 and flexible film directly through mat itself 15. In this case the distribution of rarefaction on to space occurs through air ducts 40 before the bed frame the while permeable mat in this case it is ensured the possibility of surface suction along entire surface; also due to this surface fulfillment almost is excluded the complete blocking of suction with this fulfillment it is possible to use already known medical cassette 2 of the rigid part of 20 with conducting liquid channels 21, which are hermetically sealed with the aid of flexible film 25 for this also as before the known systems cassette 2 it is forced by flexible mat 15 against the processing machine, so that partitions 22 ensure hermetic sealing. However, according to invention the surface possible suction, which occurs on the side of the machine through vacuum channels 40, and also permeable material of.

In this case the material of mat is preferably permeable for air; however, liquid-tight for the exception of the pollution of connecting surface and lightening of cleaning due to the possibility of the continuous suction of air between flexible film 25 and connecting surface of 10 ensured with the aid of the invention is ensured the additional possibility of detecting the nonhermetic state of film. The rarefaction after pressing of door in the case of the sufficiently large zone of leakage cannot be created due to the surface evacuation. In accordance with this, air is constantly drawn off from the yet not filled single-time cassette before the intervening space between the film and the mat, correspondingly, by surface. Too great a leak rate can be in this case revealed due to checking and evaluating the rarefaction. A pressure leak test can be achieved during and/or after connecting based on.

Thus, it is possible, first of all, before the filling of single-time cassette and before beginning working to reveal the leakage of the film of cassette therefore, it is possible defective cassette to substitute by the proper of.

Without the suction by means of the large surface this checking would be less reliable, since the doubling-up between the film and the mat can appear, and in the zones of the switch oned islets of air they can and it is further~[sya] of the leakages before the film, which cannot be revealed due to checking and evaluating the rarefaction. However, before principle with the aid of any form of evacuation it is possible to achieve a pressure leak test accordingly of.

The suction by means of the large surface of air between the flexible film and the connecting surface, which possibly with the aid of different examples of the fulfillment of invention is because provided the layer permeable for air, shaping of the surface of flexible film and/or mat, suction in the plane between the flexible mat and the flexible film, and/or suction through the permeable material of.

, is the central idea of this invention OF INVENTION 1 device for treating the medical liquid, which contains the processing machine with the connecting surface, moreover cassette from the rigid part with the channels conducting liquid, which are covered for the sake of flexible film, is provided, and this cassette is executed with the possibility of connection for the sake of the connecting surface of the processing machine, by the fact that before the connected state of the cassette between the flexible film and the connecting surface, at least, in the individual sections is located the layer from the permeable for air porous material for the suction through it of air by means of the large surface during the process of and/or with that connected of.

2 device on p. 1, before which is ensured the suction of air from the porous material of the wills of the plane of.

permeable for air 3. The device on paragraphs 1 or 2, before which the layer from the permeable for air porous material before the connected state of cassette is located directly beyond by bending.

4. Device on any of paragraphs 1-3 before which layer from permeable of air of porous material contains non-woven.

The device on any of.[p] 1-4, before which the layer from the permeable for air porous material is located by entire surface beyond by bending.

b. device on any of pp 1-5 before which cassette before the connected state is forced against surface, moreover during the process of connecting and/or with the connected cassette transferred through the layer from the permeable for air material perpendicular down its plane pressure presses film not penetrated for the fluid to the conducting liquid channels of the rigid part of the cassette however layer from the permeable for air porous material it remains permeable for air along its of.

7 device on any of.[p] 1-6, before which the processing machine has that located beyond the connecting