Source: https://patents.google.com/patent/WO2014169980A1/en
Timestamp: 2018-06-22 16:08:20
Document Index: 186979918

Matched Legal Cases: ['art 20', 'arts 20', 'arts 20', 'art 20', 'art 20', 'art 20', 'art 20', 'art 20', 'art 22', 'art 20', 'arts 20', 'art\n1']

WO2014169980A1 - Ventilation tube unit for connection to a medical ventilator and a ventilation system comprising the ventilator and at least one ventilation tube unit - Google Patents
Ventilation tube unit for connection to a medical ventilator and a ventilation system comprising the ventilator and at least one ventilation tube unit
WO2014169980A1
WO2014169980A1 PCT/EP2014/000465 EP2014000465W WO2014169980A1 WO 2014169980 A1 WO2014169980 A1 WO 2014169980A1 EP 2014000465 W EP2014000465 W EP 2014000465W WO 2014169980 A1 WO2014169980 A1 WO 2014169980A1
PCT/EP2014/000465
Ventilation hose unit for connection to a medical ventilator, and a ventilation system comprising the ventilator and at least one breathing tube unit
The present invention relates to a breathing tube unit according to the preamble of claim 1 and a ventilation system according to the preamble of claim sixteenth
Ventilators as medical devices are used for artificial respiration of human patients. Through a tube system, the air is directed to the artificial respiration to the patient.
During artificial ventilation of the patient to the ventilator can condense humid air in the respiratory system, particularly in the devices connected to the medical ventilator breathing tube loading unit, come. The resulting thus condensed into the breathing tube unit or in the entire ventilation system to an increase in air resistance and can even get into the lungs during artificial ventilation of the patient. To prevent this, be fitted to the breathing tubes waterfalls einge- which the gather forming condensation in the breathing tubes so that the dangers and risks described above no longer occur. Such water traps have a removable bin that is regularly emptied. The publication US 2010/0252035 A1 shows a breathing tube unit for connection to a medical ventilator. The breathing tube unit comprises an outer tube with an integrated T-junction, on whose facing away from the outer end of the tube a water serfalle is connected to receive condensate. On both sides of the outer tube connection means are provided for the breathing tube unit on the one hand with a medical ventilator, and to connect the other hand, with a connection piece of a respirator or the like. Therefore, the outer tube extends between the two arrival closing means. Furthermore, an inner tube is provided, which is inserted in the manner of a coaxial arrangement in the outer tube. The inner tube is connected at its ends to the aforementioned connection means. Thus, both the outer tube and the inner tube between the two connection means extend. Such Beatmungsschlau- cheinheiten for connection to a medical ventilator connect it to the connection of a mask or the like on the patient. In most cases, the breathing tube unit depends between the medical ventilator and the patient and forms in its lateral contour of an arc. Condensate which forms in the breathing tube unit flows Due to gravity usually at the lowest point of the forming unit by the breathing tube sheet. Known breathing tube units see, therefore, that a water trap is positioned centrally between the connection means. This is based on the assumption that the outer tube in the middle between the connection means also depends on tiefs- th, so as to form the condensate here and can be absorbed by the water trap.
In practice it has been found, however, that a ventilator tube unit between the medical device and the patient can not always be arranged so that the water trap or the T-junction at the lowest point of the outer tube is. This can occur, for example, characterized in that the is arranged a connection means the respiratory tube unit higher than the opposite, second connection means. In this case, the low point of the outer tube in the longitudinal direction is off-center. At this au- ßermittigen low point, however, the condensate collects. Due to the longitudinally central arrangement of the water trap, it is not suitable to intercept the condensate, so that the so-called Resistance - that is, the measure of the flow resistance - and the so-called compliance - that is, the measure of the Lumendehnbarkeit - change. Further, there is a risk that the non-captured condensate into the lungs during artificial ventilation of the patient.
The object of the present invention is to provide a ventilation tube unit and a ventilation system, which can be adapted in each case during operation, that the condensed water during the operation at any point of the outer tube from the outer tube can be discharged, and While changing possible without the resistance and / or the compliance of the breathing tube unit.
The object is achieved by a ventilation hose unit for connection to a medical ventilator comprising an outer tube having a tubular connecting means which at least one shell-side branch for connection of a medical unit, in particular a water trap, and that between a first outer tube part and a second outer tube portion of the outer tube is disposed, an inner strand, which is disposed within the outer tube, and two connecting means, between which in each case the outer tube and the inner strand extend, each connection means by an associated inner string connection to one end of the inner strand and an associated outer hose connection with an equilateral , the end of the outer tube is connected characterized in that each outer tubular member between a compressed state and an expanded state is configured variable in length, u nd the connecting means is slidable relative to the inner strand in the longitudinal direction by a compression of an outer tube portion and a corresponding expansion of the other outer tube part.
According to the invention on the outer tube has a first and a second outer tube portion and a valve disposed between the outer tube parts tubular connecting means with at least one shell-side branch. The connecting means can be for example a T-piece or a T-junction or a Y-manifold. The outer tube can thus share hose from the outside and be plugged together the connecting means. Alternatively, it is also possible that the connecting means an integral part of the outer tube parts and / or the outer hose is at least in one piece with an integral connection means.
Both the outer tube and the inner strand each extending between the inventive connecting means. The connection means WEI sen to each corresponding connection means for connection to the outer tube or the inner strand on.
According to the invention the inner strand is disposed within the outer tube, so that preferably forms a kind of coaxial arrangement. By this arrangement, it is ensured that at least one channel between the Au ßenschlauch and the inner strand is formed which serves for circulation and / or movement of air within the breathing circuit or system.
Moreover, it is according to the invention provided that each outer tube part between a compressed state and an expanded state is variable in length configured. Under a compression of the outer tube part in the longitudinal direction of upsetting, telescoping, collapsing or the like compression of the outer tube may for example be understood in the longitudinal direction. Under an expanding an outer tube portion in a longitudinal direction opposite change to the aforementioned compression of the outer tube part is preferred understood in the longitudinal direction. Compressing an outer tube part in the longitudinal direction may be, for example, stretching, pulling, unfolding and / or the like extending in the longitudinal direction.
The invention is based on the realization that when the outer tube parts undergo a corresponding change in length, it is possible that the condensate can be discharged at any location of the outer tube from the outer tube, without the resistance and / or compliance of the defining by the outer tube channel to change. This is because the displacement of the connecting means relative to the inner strand of the total internal volume of the outer tube does not change since it is disposed as well as the inner strand between the two connection means. The length is preferably defined by the inner strand, so that the total length of the outer tube is not varied by the displacement of the connection means. As the inner volume of an outer tube portion and the other outer tube part is changed by a displacement of the connecting means, but in a same degree. If the an outer hose portion is reduced by a certain volume by compressing or pushed together, the other outer tube part enlarged by the corresponding expanding or being pulled apart by the same volume. From the outside, the outer tube irrespective of the relative position of the connecting means to an at least substantially constant volume. The inventive breathing tube unit, it is possible the connection means or the water trap which is connected to the aforementioned connection means to position at the lowest point of the outer tube. Even if the contour of the breathing tube unit changes, for example, by a rearrangement of the patient, the inventions dung proper breathing tube unit is configured to position the connecting means or the water trap without an opening of the outer tube back to the new lowest point of the outer tube. Here, the breathing tube unit of the invention has the advantage that neither compliance nor the resistance of the breathing tube unit is changed by moving in front of said adjustment. The settings of the medical ventilator may therefore remain unchanged. Thus the dangers and risks of artificial ventilation of the lungs of a patient fall significantly.
According to a preferred embodiment of the invention, it is provided that the outer tube in the fully extended condition is longer than the inner line. Here, it is temporarily considered that the outer tube and the inner tube are mechanically coupled by the connection means. More preferably, the first and the second outer tube part for themselves are considered in the fully extended state at least substantially as long as the inner strand. Thus, it is possible that the connecting means is slidable relative to the inner strand approximately over the entire length of the breathing tube unit. Because regardless of how far the one of the two outer hose part is collapsed, allowing the other outer hose part to make up the rest of the outer tube by this is extended correspondingly far. An alternative variant provides that the first and second outer tube section taken individually having at least 66% of the length of the inner strand in the fully extended state. This configuration is preceded by the experience that although the low point of a breathing tube unit used in practice is not centered, but often find, near the center mostly in the longitudinal direction. Thus, a flexible shifting of the connection means sufficient for the central region of the inner strand for certain applications. According to a further preferred embodiment of the invention, it is provided that the connecting means is movable from a plurality of neutral positions between a first position at which the an outer hose portion is compressed, and a second position at which the other outer tube part is compressed to a wherein the connecting means heposition without the influence of external forces maintain the respective Ru. Each of the two parts of the outer tube can be extended to a certain length compressed. The respective limit of compression and / or other achievable by compression length of each of the outer tube part preferably determines the first and second position. Between the first position and the second position, the connecting means can be moved in the longitudinal direction. In this case, a plurality of rest positions where the connecting means without the influence of external forces do not automatically alter or maintain its relative position. The stiffness of the outer hose parts and / or other physical properties of the outer tube parts can be adjusted accordingly to allow persistence of the connection means in the respective rest position.
According to a particularly preferred embodiment of the invention, it is provided that the longitudinal resilience of the outer tube part, in particular, the outer tube parts, is greater than a longitudinal flexibility of the inner strand, in particular in the pulling direction. This embodiment is preceded by the realization that the outer tube is mechanically coupled by the connection means with the inner strand. The forces acting on the connecting means in the longitudinal direction of forces for displacement thereof in the longitudinal direction due to the aforementioned coupling act indirectly on the inner strand. However, preferably, the outer tube or the outer tube portions have a higher mechanical compliance so that there is a displacement of the connecting means relative to the inner string without at least significantly to change the latter in its length. This is especially true when the forces act in the pulling direction on the inner strand. Under the longitudinal compliance, the compliance is to be understood in the longitudinal direction is preferred.
According to a further preferred embodiment of the invention, it is provided that each outer tube part is designed in the manner of a corrugated hose with a plurality of ascending and collapsible annular folds, and opened more of the annular folds and a plurality of annular folds are folded. Preferably, the annular folds of a corrugated hose are arranged one behind the other. Each annular fold is a cylindrical portion with V-shaped, symmetrical, radially inward and outward circumferential surfaces, which face away from each other in an unfolded state and abut one another in a collapsed condition. By opened more of the annular folds of the outer tube and a plurality of annular folds are folded, it is possible that the connecting means of the outer tube is displaceable relative to the inner strand in the longitudinal direction. During Längsverschie- bens of the lanyard ring folds fold example of a tube part and other ring folds example of other foreign hose partly together. This ensures that the total length of the outer tube and / or the internal volume of the outer tube are retained. This results in the advantages already discussed above. A further preferred embodiment of the invention is characterized in that the compliance of each of the annular folds, to switch from an unfolded state to a folded state, or vice versa, is greater than a longitudinal flexibility of the inner strand, in particular in the pulling direction. By the resilience of each annular fold or relevant for the compression or expansion of the outer tube annular roots is selected to be greater than a resilience of the inner strand, it is ensured that the connecting means is movable relative to the inner strand in the longitudinal direction without increasing the length of the inner strand and / or affecting the overall length of the outer tube prevail. A further preferred embodiment of the invention is characterized in that the connecting means is arranged between the annular folds of the outer tube, that the connecting means of an outer tube portion and unfolding of annular folds of the other outer tube part displaceable by folding of annular folds in the longitudinal direction relative to the inner strand is. Thus, the length of the inner strand may be at least substantially retained. The same preferably applies to the total length of the outer tube. Relative to the longitudinal flexibility in the pulling direction is made by analogy to the above explanations to the longitudinal flexibility of the inner strand.
According to a further preferred embodiment of the invention, it is provided that a water trap for receiving condensate at the one branch is at least connected. The water trap is preferably used for receiving condensed water from the outer tube. Such falling water are well known from the prior art. Preferably, the junction is designed in such manner and arranged to simply possible to connect the water trap. Alternatively, at the branch, another medical device, such as an anesthetic vaporiser, be connected. To the branch and / or the water trap may have a fast lanschlussmittel.
According to another preferred embodiment of the invention, it is provided that the inner strand is dimensionally stable in the longitudinal direction at least substantially. In other words, the physical properties, especially the stability of the inner strand are selected such that the inner strand is free from permanent changes in length under normal loads.
According to another preferred embodiment of the invention, it is provided that a ratio of the longitudinal stiffness of the inner tube is selected to the longitudinal stiffness of the outer tube so that a force acting on the connecting means and the coupled thereto, the outer tube parts and connection means on the inner tube force a longitudinal displacement of the connecting means caused by compression of an outer tube portion and a corresponding expansion of the other outer tube portion under an at least substantially maintaining the length of the inner tube. Under the longitudinal rigidity, a resistance of the inner tube and the outer tube against deformation by an attacking force in the longitudinal direction is to be understood. In order to ensure a displacement of the means of Verbindungsmit-, the longitudinal stiffness of the inner tube is greater, preferably significantly greater, than the longitudinal stiffness of the outer tube or the longitudinal stiffness of the outer hose part of the outer tube. Particularly preferably, the longitudinal stiffness of the inner tube is at least 1, 5 times greater than the longitudinal stiffness of the outer tube or the longitudinal stiffness of the outer tube parts. Thus it can be ensured in a particularly simple, that in a longitudinal displacement of the connecting means the length of the inner tube is maintained at least substantially. The ratio of the stiffness can also be greater, for example 2, can be selected.
Particularly preferably, the inner strand is a rope. The rope may have a particularly high longitudinal rigidity in the drawing direction, so that presents a particularly simple embodiment of the breathing tube unit with a rope as the inner strand.
According to another preferred embodiment of the invention, it is provided that the inner strand as inner tube and each inner string connection is designed as an inner hose connection, so that two tubular channels formed. Thus, it is preferably provided that the first hose channel is formed inside the inner tube and the second tube channel is formed between the outer tube and the inner tube. Therefore, the outer tube and the inner tube advantageously form a KOA xiale arrangement. Such breathing tube unit is very compact. why not two separate ventilation tube units, but only a breathing tube unit are necessary between the ventilator and mask for a breathing circuit. According to a further preferred embodiment of the invention, it is provided that the breathing tube unit has a portion extending between the connecting means inner tube, each connection means is connected through an associated inner tube connection to one end of the inner tube, and wherein the inner tube in radial direction between the inner string and the outer tube is arranged so that two tubular channels formed. The inner strand of the inner tube and the outer tube thus preferably form a coaxial arrangement. The inner strand is preferably adapted to determine the connection between mittein the length or to fix. The inner string may for this purpose have a correspondingly adapted stiffness or compliance. Preferably, the resilience of the inner tube and / or the resilience of the outer tube are respectively higher than the resilience of the inner strand. Particularly advantageously, the connecting means of the outer tube, and a certain portion of the inner tube can thus be moved parallel and relative to the inner strand in the longitudinal direction. This is particularly advantageous when the outer tube and the inner tube in radial direction, at least partially, mechanically connected to each other. This can be useful, for example, to increase the resistance to radial deformation of the outer tube and / or the inner tube.
A further preferred embodiment of the invention is characterized in that the inner tube is designed in the manner of a corrugated hose with a plurality of waves which prevent by their at least substantially constant radii a folding between the shafts. This Ausgestal- direction of the inner tube is preferably used to form the inner strand and / or to support the inner strand in the function to design the length of the breathing tube unit against external force influences robust. Through the continuous radiuses of the waves of the corrugated hose compression of the inner tube can be effectively prevented. Such wave hoses can be particularly easily formed with a high longitudinal stiffness.
A further preferred embodiment of the invention is characterized in that the inner tube is designed in the manner of the outer tube, wherein the junction of the inner tube is guided through the outer jacket of the outer tube. This configuration of the inner tube is therefore preferable alternative to understand the previous configuration of the inner tube. A similar design of the inner hose and the outer hose provides the advantage that the respective connecting means may be arranged displaceable in parallel. Preferably radial connecting elements between the connecting means are provided, so that both connecting means are parallel displaced by an external operation. Such a configuration of the breathing tube unit is particularly convenient for the convenient on record.
A further preferred embodiment of the invention is characterized in that at the junction of the inner tube, the or a further water trap is connected, around which catch-forming condensation in the inner tube. The leading through the outer jacket of the outer tube junction of the inner tube may thus lead to a separate or the same water trap. A separate water trap is the advantage that the hose formed inside the inner tube channel decoupled from a space formed between the inner tube and outer hose tube or channel is not coupled through the water trap. A common water trap forms the advantage that such an arrangement is particularly compact.
According to a further aspect of the invention, the aforementioned object is achieved by an inventive ventilation system comprising a ventilator for artificial respiration of a patient, at least one ventilation tubing unit having a water trap, and a breathing mask, wherein the breathing tube unit is designed according to one of the preceding aspects and / or designed , The ventilation system therefore enjoys receive the same benefits as explained to the foregoing embodiments.
Further advantageous features of the invention will become apparent from the description of the embodiment according to the invention together with the claims and / or in the accompanying drawings. In this case, embodiments of the invention one or a combination of several characteristics can be fulfilled. The invention is described below, without limiting the general inventive idea with reference to embodiments with reference to the drawings. In the drawings:
Fig. 1 is a sectional view of the ventilation tube unit in a first variant embodiment, and
Fig. 2 is a sectional view of the ventilation tube unit in a second variant.
1 shows a breathing tube unit 2 according to the invention in a sectional view, the section being taken in the longitudinal direction A of the breathing tube unit. 2 The breathing tube unit 2 includes an outer tube 4, an inner strand 6, and two connecting means 8. The inner assembly 6 is disposed inside the outer tube 4, so that therefrom a coaxial tube arrangement. The inner strand 6 and the outer tube 4 extending between the outer connecting means 8. Each of the connecting means 8 comprises an inner string connection 10 and a Außenstran- ganschluss 12. With the inner string connection 10, an end of the inner strand 6 and the outer strand terminal 12 of the same connection means 8 an equilateral end of the outer tube 4 is connected. The opposite ends of the inner strand 6 and the outer tube 4 are namely connected in a corresponding manner to the other terminal means 8, and.
1 shows the inner strand 6 is formed as an inner tube. 7 The connection means 8, the inner tube 7 and the outer tube 4 are formed by their coaxial arrangement such that two tubular channels, namely lent an inner tubing channel 14 and a central tube channel 16 formed. Each of the two tube channels 14, 16 extending over the entire length of the breathing tube unit 2. Further, the two tube channels 14, 16 pneumatically decoupled.
The outer tube 4 has a tubular connecting means 18, see be- disposed a first outer tubular part 20 and a second outer tube portion 22 of the outer tube. 4 The outer tubular members 20, 22 may be connected in a conventional manner to the connecting means 18th Alternatively, it may be provided that the outer tube 4 is designed in one piece so that the connecting means 18 forms an integral part. The 18 facing away from the connecting means Außenschlauch- ends of the parts 20, 22 are each connected to one of the connection means. 8
The tubular connecting means 18 has at least one shell-side branch 24 for connecting a medical unit (not shown), in particular a water trap on. The feeder 24 serves, in particular in order to derive in the central tube channel 16, forming condensed water to the outside and keep this from the lungs of the patient to be vented. In order to ensure the discharge of the condensed water effectively, it is advantageous if the branch is arranged at the lowest point between the two connection means 8 24th However, this is not always in the center between the connection means 8, but can vary depending on the level of arrangement of the connection means 8 also be off-center.
To be able to flexibly as possible to the branch 24 and the connecting means 18 positioned between the connecting means 8, each of the Außenschlauch- parts 20, designed variable in length between a compressed state and an expanded state 22nd In Figure 1, the Verbindungsmit- tel 18 facing half of the first outer tube part 20 is compressed. This is particularly it can be seen that there is a corrugated tube with a plurality of annular folds in the first outer tube part 20th The said connecting means 18 facing half of the first outer tube part 20 has collapsed annular folds. The remaining Ringfal- th of the first outer tube part 20 are opened. Thus, the first Au ßenschlauchteil 20 in an at least partially compressed state. The second outer tubular portion 22 is also a corrugated tube having a plurality of annular folds which are respectively opened. The second outer tubular portion 22 is therefore in an expanded state. Because of the different states of the first outer tube part 20 and the second outer tube part 22 of the connecting element 18 is by compressing the second outer tube portion 22 and a korrespondieren- of expanding the first outer tube part 20 displaceable relative to the inner tube 7 in the longitudinal direction A.
The inner tube 7 has no annular folds. The inner tube 7 is therefore preferably adapted to determine the length of the breathing tube unit 2 and / or the length between the connecting means 8 and to fix. Preferably, the inner tube 7 to a correspondingly high longitudinal stiffness. This is preferably as high chosen such that a force for displacing the connector means 18 is not sufficient to compress the inner tube 7 and / or compress. The inner tube 7 is, therefore, dimensionally stable in the longitudinal direction substantially.
In order to allow the connecting means 18 can also remains at the level reached by shifting the lowest point, it is provided that the connecting means 18 is positionable at a plurality of positions of rest without the influence of external forces. This is preferably by the Ausgestal- tung the outer tube portions 20, 22 to ensure than corrugated hoses. Each of the annular folds of such corrugated hose has two stable states, namely a state in which the respective annular fold is unfolded and another stable state in which the respective annular fold is folded. This results in a plurality of stable states, which are adjustable to the outer tube portions 20, 22 by displacing the connection means 18th the annular folds of the outer tube parts 20, 22 are in a stable state, the connecting means 18 is in a rest position, which is maintained without the influence of external forces.
2 shows another embodiment variant of the ventilation tube unit 2 according to the invention is shown which has a plurality of same characteristics as the previously discussed embodiment variant of the ventilation tube unit. 2 To the extent it makes sense, reference is made to the above explanations to the figure 1, reference at this point, therefore, with the same features with the same reference characters in the figure 2 are shown. The breathing tube unit 2 shown in Figure 2 is characterized in that the inner strand 6 is not configured by the internal tube. 7 Rather, the inner strand is constructed by a separate member. 6 Therefore, the inner tube channel 14 is formed between the inner strand 6 and the inner tube. 7 The central tube channel 16 is formed as previously also between the inner tube and the outer tube 7. 4
By means of this variant embodiment of the breathing tube unit 2, it is possible that a connecting means 26 of the inner tube 7 parallel to a connecting means 18 of the outer tube 4, relative to the inner strand in the longitudinal direction, is moved. Thus, it is possible that a tap 28 of the connecting means 26 of the inner tube 7 is guided through the outer shell 30 of the outer tube. 4 Thus, at the junction 28 of the home nenschlauchs 7 and the branch 24 of the outer tube 4 separate water traps (not shown) or a common water trap (not shown) can be connected, around which catch-forming condensation in the inner tube and outer tube. Each branch 24, 28 may be by the associated connecting means 18 are shifted 26 in such a manner relative to the inner strand 6 in the longitudinal direction, that the respective branch 24, 28 at least substantially at the lowest point between the connecting means 8 and the respiratory tube unit 2 is arranged , The channel in the inner tube 14 and / or in the central tube channel 16 forming condensation can thus be used particularly effectively and safely discharged from the ventilation system.
Breathing tube unit
internal strand
Inside string connection
Outside strand connecting inner tube channel medium tube channel
first outer tube part second outer tube part
1. breathing tube unit (2) for connection to a medical ventilator comprising an outer tube (4) with a rohrförmi- gen connecting means (18), having at least one shell-side branch (24) for connection to a medical unit, in particular a water trap, and between a first outer tube part (20) and a second outer tube portion (22) of the outer tube (4) is arranged, an inner strand (6) which is disposed within the outer tube (4) and two connecting means (8), between where the outer tube (4) and the inner strand (6) extend, each connecting means (8) by an associated home nenstranganschluss (10) with one end of the inner strand (6) and by a respective outer tube connection with a same side end of the outer tube ( 4) is connected characterized in that each outer tube part (20, 22) between a compressed state and an expanded Zustan d is changeable in length designed and the connecting means (18) by compressing said one outer tube portion (20) and a corresponding expansion of the other outer tube portion (22) relative to the inner strand (6) is displaceable in the longitudinal direction (A).
2. breathing tube unit (2) according to the preceding claim, characterized in that the longitudinal resilience of the outer tube (4), in particular, the outer tube parts (20, 22) of the outer tube (4) is greater than a longitudinal flexibility of the inner strand (6), particularly in direction of pull.
3. The method according to any one of the preceding claims, characterized in that the connecting means (18) to one of a plurality of neutral positions between a first position at which the one outer tube member (20) is compressed, and a second position at which the other outer tube portion (22) is compressed, can be displaced, wherein said connecting means (18) maintaining the respective rest position without the influence of external forces.
4. breathing tube unit (2) according to any one of the preceding claims, characterized in that each outer tube portion (20, 22) is designed in the manner of a corrugated hose with a plurality of ascending and collapsible annular folds, and a plurality of annular pleats unfolded and folded more of the ring wrinkles are ,
5. breathing tube unit (2) according to the preceding claim, characterized in that the compliance of each of the annular folds, to switch from an unfolded state to a folded state, or vice versa, is greater than a longitudinal flexibility of the inner strand (6), in particular in the pulling direction ,
6. breathing tube unit (2) according to any one of the preceding claims 4-5, characterized in that the connecting means (18) arranged between the annular folds of the outer tube (4) is arranged so that the connecting means (18) by collapsing of annular folds of an outer tube part ( 20) and unfolding ring folding the other outer tube portion (22) in the longitudinal direction (A) relative to the inner strand (6) is displaceable.
7. breathing tube unit (2) according to any one of the preceding claims, characterized in that a water trap for containing condensate to the at least one branch (24) is connected.
8. breathing tube unit (2) according to any one of the preceding claims, characterized in that the inner strand (6) in the longitudinal direction (A) is at least substantially dimensionally stable.
9. breathing tube unit (2) according to any one of the preceding claims, characterized in that a ratio of the longitudinal stiffness of the inner tube (7) to the longitudinal stiffness of the outer tube (4) is chosen such that a to the connecting means (18) and the coupled thereto, outer tube portions (20, 22) and connecting means (8) on the inner tube (7) acting force a longitudinal displacement of the connecting means (18) by compressing said one Außenschlauch- part (20) and a corresponding expansion of the other outer tube part (22 ) effected under an at least substantially maintaining the length of the inner tube (7).
10. breathing tube unit (2) according to any one of the preceding claims, characterized in that the inner strand (6) is a rope.
11. breathing tube unit (2) according to any one of the preceding claims 1-9, characterized in that the inner strand (6) as an inner tube (7) and each inner string connection (10) is designed circuit as Innenschlauchan- so that two tube channels (14, 16) form.
12. breathing tube unit (2) according to any one of the preceding claims 1-10, that the breathing tube unit (2) comprises a between the connecting means (8) extending inner tube (7), each connecting means (8) by an associated Innenschlauchan- circuit with a end of the inner tube (7) is connected, and wherein the inner tube (7) is arranged in the radial direction between the inner strand (6) and the outer tube (4), so that two tube channels (14, 16) form.
13. breathing tube unit (2) according to any one of the preceding claims 11-12, characterized in that the inner tube (7) is designed in the manner of a corrugated hose with a plurality of waves which prevent by their at least substantially constant radii a folding between the shafts ,
14. breathing tube unit (2) according to claim 11-12, characterized in that the inner tube (7) in the manner of the outer tube (4) is arranged, wherein the branch (28) of the inner tube (7) through the outer jacket of the outer tube (4) is performed.
15. breathing tube unit (2) according to the preceding claim, characterized in that the branch (28) of the inner tube (7) or a further water trap is connected to catch located in the inner tube (7) forming condensation.
16. ventilation system comprising a ventilator for artificial respiration of a patient, at least one ventilation tube unit (2) with a water trap and a breathing mask, characterized in that the ventilation tube unit (2) is designed according to one of the preceding claims and configured.
PCT/EP2014/000465 2013-04-18 2014-02-21 Ventilation tube unit for connection to a medical ventilator and a ventilation system comprising the ventilator and at least one ventilation tube unit WO2014169980A1 (en)
US14785108 US20160074616A1 (en) 2013-04-18 2014-02-21 Ventilation tube unit for connection to a medical ventilator as well as a ventilation system comprising the ventilator and at least one ventilation tube unit
WO2014169980A1 true true WO2014169980A1 (en) 2014-10-23
US20100252035A1 (en) 2009-04-06 2010-10-07 Hsiner Co., Ltd. Respiratory tube assembly
CN105377350A (en) 2016-03-02 application
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