Fixation of a heating and / or temperature measuring device in and / or to a medical device

Abstract

To provide a mounting structure capable of easily assembling or disassembling a heating and / or temperature measuring device.SOLUTION: A mounting structure 1 for a medical instrument comprises a receiving element 8 which can be mounted on a mounting part of the medical instrument, an insertion element 6 which can be inserted into the receiving element 8 and comprises a heating and / or temperature measuring device 2 for heating and / or temperature measurement of a liquid and / or a gas in a liquid chamber 30 of the medical instrument, and a connecting element 10 for connecting the insertion element 6 to the receiving element 8, wherein the connecting element 10 comprises a part 12 which is movable relative to the receiving element 8 and / or the insertion element 6 between a locked position and an unlocked position, wherein the movable part 12 is designed to lock the insertion element 6 inserted into the receiving element 8 in the locked position such that the insertion element 6 cannot be removed from the receiving element 8 and to release the insertion element in the unlocked position such that it can be removed.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a mounting structure for mounting a heating and / or temperature measuring device in and / or on a medical device. The present invention further relates to a medical device equipped with such a mounting structure. [Background technology]

[0002] Medical devices in the form of respiratory therapy machines can be used to treat sleep-related breathing disorders or other respiratory pump problems. In this case, the patient is connected to the respiratory therapy machine via a suitable patient interface, for example in the form of a face mask or nasal mask, and patient tubing. To reduce the risk of lung infection or lung tissue damage, it may be necessary to appropriately condition the respiratory gas delivered to the patient. Respiratory gas conditioning is usually understood to mean preparing the respiratory gas by heating and / or purifying it, which is particularly important for sensitive patients with damaged lungs. For this purpose, active respiratory gas humidifiers, such as nebulizers, evaporators, or bubblers, or passive respiratory gas humidifiers, also known as heat and moisture exchangers or HMEs for short, can be used.

[0003] Respiratory gas humidifiers may comprise a liquid chamber containing heated and / or purified water, into which respiratory gases can be introduced to be heated or humidified. The liquid chamber may comprise an (internal) heating device, e.g. in the form of a heating rod, for heating the water, and / or a temperature measuring device, e.g. in the form of a dip tube, for measuring the temperature of the liquid. External heating devices are also possible.

[0004] Such heating and / or temperature measuring devices may be attached to the liquid chamber, for example by means of a threaded connection.

[0005] Respiratory gas humidifiers require periodic cleaning due to the potential for bacterial and fungal growth in the heated water in the liquid chamber. In order to thoroughly clean the liquid chamber and / or heating and / or temperature measuring device periodically, it is advantageous if the user can disassemble the corresponding parts so that the parts can be cleaned separately, particularly those parts that each include a threaded portion.

[0006] Two hands are typically required to screw or loosen the heating and / or temperature measurement device so that the threaded connection is watertight. Furthermore, it is difficult for many users to estimate the correct torque when tightening the screw. Too little torque can result in a loose threaded connection, potentially allowing water to escape from the liquid chamber. Too much torque can damage components, particularly plastic components or threads. Additionally, many mechanically ventilated patients are physically debilitated and / or suffer from other illnesses, such as gout, osteoarthritis, or rheumatism. Patients with such limited mobility can have particular difficulty assembling and disassembling such threaded heating and / or temperature measurement devices. Summary of the Invention [Problem to be solved by the invention]

[0007] An object of the present invention can be to provide a mounting structure that makes it easier to assemble or disassemble a heating and / or temperature measuring device compared to a screw-type mounting structure. Another object of the present invention can be seen as providing a corresponding medical device.

[0008] These problems are solved by the subject matter of the independent claims. Advantageous embodiments of the invention are set out in the dependent claims, the following description and the accompanying drawings. [Means for solving the problem]

[0009] A first aspect of the present invention relates to a mounting structure for a medical device, in particular a respiratory gas humidifier. The mounting structure comprises a receiving element attachable to a mounting portion of the medical device, an insert element insertable into the receiving element and including a heating and / or temperature measuring device for heating and / or measuring the temperature of liquid and / or gas in a liquid chamber of the medical device, and a connecting element for connecting the insert element to the receiving element, the connecting element including a part movable relative to the receiving element and / or the insert element between a locked position and an unlocked position. The movable part is designed to lock the insert element inserted into the receiving element in the locked position to prevent removal (or falling off) of the insert element from the receiving element, and to release the insert element in the unlocked position to allow removal.

[0010] Such a mounting structure allows a patient with limited mobility to simply and easily assemble or disassemble the heating and / or temperature measurement device, for example for cleaning purposes, without damage or leaks that are common with screw-on devices.

[0011] The movable part can be designed such that in the locked position it forms a form-fit and / or force-fit connection between the receiving element and the insert element inserted therein, and in the unlocked position it releases the form-fit and / or force-fit connection again. The form-fit and / or force-fit connection can be designed such that the insert element cannot be manually removed (with normal force) from the receiving element.

[0012] The movable part may be supported on the receiving element, on the insertion element, and / or on another part of the mounting structure and / or medical device for movement between a locked position and an unlocked position.

[0013] The movable part may be rotatable and / or displaceable relative to the receiving element and / or the insert element between the locked and unlocked positions and / or may follow a straight and / or curved path when moving between the locked and unlocked positions.

[0014] For example, the movable part may be fixedly connected to the insertion element and movable, e.g., rotatable and / or displaceable, together with the insertion element, relative to the receiving element between the locked and unlocked positions. Alternatively, the movable part may be fixedly connected to the receiving element and movable, e.g., rotatable and / or displaceable, together with the receiving element, relative to the insertion element between the locked and unlocked positions.

[0015] The movable part can be designed to at least partially surround an insert element inserted into the receiving element.

[0016] The receiving element may for example be formed as part of the outer housing of the liquid chamber and / or may be attachable to a part (of the outer housing) of the liquid chamber as an attachment.

[0017] For example, when the liquid level in the liquid chamber is low, heating or measuring the temperature of the gas by the heating and / or temperature measuring device may be important. It is also conceivable that at least a part of the heating and / or temperature measuring device used for heating or measuring further protrudes into another part of the respective medical device, where this part is not in contact (or at least not completely in contact) with the liquid but is in contact with a gas (e.g. ambient air), in which case this gas is additionally or alternatively heated or its temperature measured.

[0018] A second aspect of the invention relates to a medical device, in particular a respiratory gas humidifier, comprising a liquid chamber, a mounting part and a mounting structure as described above and below, the receiving element of the mounting structure being attached to the mounting part of the medical device.

[0019] The receiving element attached to the mounting portion can be aligned with respect to the opening in the housing of the liquid chamber so that when the insert element is fully inserted into the receiving element, the heating and / or temperature measuring device protrudes through the opening into the interior of the liquid chamber.

[0020] Additionally, the medical device may include a humidification device designed to humidify the breathing gas using liquid from the liquid chamber and supply the humidified breathing gas to the ventilation tube connection.

[0021] The liquid chamber may, for example, be a water container and / or may have a volume of 100 ml to 1000 ml, 600 ml to 800 ml, or 300 ml to 400 ml.

[0022] The medical device can be, for example, a respiratory gas humidifier or a ventilator, especially in the form of a CPAP and / or high flow respiratory therapy machine, or a device for removing secretions.

[0023] The medical device may further comprise at least one of the following components: a measurement probe for measuring the flow rate and / or temperature of the respiratory gas; a tubing system for delivering the respiratory gas to and / or exhausting it from the patient; and a tube heater for heating one or more tubes of the tubing system.

[0024] Various embodiments of the present invention are described below, which should not be construed as limiting the scope of the present invention.

[0025] According to one embodiment, the movable part can be supported so as to be displaceable between a locked position and an unlocked position and / or rotatable about an axis of rotation (e.g., about the longitudinal axis of the insertion element) through a rotation angle of up to 360°, up to 180°, up to 120°, or preferably up to 90°. In other words, the movement of the movable part between the locked and unlocked positions can be pure translation, pure rotation, or a combination of translation and rotation. In that case, the rotation can be limited to a certain maximum rotation angle, for example, up to 360°, up to 180°, up to 120°, or preferably up to 90°. This can simplify the operation of the movable part, for example, compared to embodiments with a screw connection that is usually tightened more than one full turn.

[0026] During insertion, the (e.g., elongated) insertion element can only move in a direction parallel to its longitudinal axis, in other words, the insertion of the insertion element (unlike screwing) can be performed without changing its angular position or rotation angle relative to the longitudinal axis as the axis of rotation.

[0027] According to one embodiment, the insert element can be inserted into the receiving element up to a sealing position. In the sealing position, the insert element can be connected to the receiving element in a liquid-tight manner, e.g., such that a gap between the insert element and the receiving element is sealed so that liquid and / or gas cannot escape from the liquid chamber to the outside through the gap. In this case, the movable part can be designed to lock the insert element in the sealing position in the locked position and / or to unlock the insert element in the unlocked position. For example, the mounting structure can be designed so that in the sealing position, the insert element is pressed against the receiving element with a specific, sealing-required force, which can act, e.g., in the direction of the longitudinal axis of the insert element.

[0028] According to one embodiment, the mounting structure can be designed in such a way that the insert element can be inserted into the sealing position without having to rotate the insert element and / or the movable part about the axis of rotation relative to the receiving element by more than 360°, more than 180°, more than 120° or preferably more than 90°. It is also possible to insert the insert element into the sealing position by simply pushing it in.

[0029] Alternatively, the mounting structure can be designed such that when the insert element is rotated about the rotation axis, the receiving element rotates at least partially together with the insert element.

[0030] Compared to threaded connections, where the tightness is determined by the torque applied when tightening the threaded connection, this embodiment has the advantage that neither large rotational movements nor much torque are required to create a fluid-tight connection, which can significantly simplify assembly and / or make the mounting structure more robust to assembly errors.

[0031] According to one embodiment, the mounting structure can further comprise a sealing element, which can be designed in such a way that when the insert element is inserted into the sealing position, the sealing element is compressed on the one hand by the insert element and / or the connecting element and / or the movable part and on the other hand by the receiving element in order to connect the insert element with the receiving element in a fluid-tight manner.

[0032] In other words, the sealing element can be designed in a compressed state to close the gap between the insert element and the receiving element, and / or between the connecting element and the receiving element, and / or between the movable part and the receiving element in a liquid-tight manner, so that when the insert element is in the sealing position, no liquid (or gas) can escape from the mounting structure, or not a significant amount of liquid (or gas) can escape.

[0033] According to one embodiment, the movable part can be designed to exert a force on the insert element and / or receiving element in the locked position in the direction of the sealing position, which can further improve the sealing effect. For example, this force can be suitable for compressing the sealing element with a predetermined pressure, thereby ensuring a fluid-tight connection even in the case of relatively large dimensional and / or shape deviations due to manufacturing, assembly or temperature.

[0034] According to one embodiment, the insertion element inserted up to the sealing position can abut against at least one stopper, which can be designed to prevent the insertion element from being inserted further beyond the sealing position, thus avoiding leakage and / or damage due to inserting the insertion element too deeply.

[0035] According to one embodiment, the movable part can be spring-elastically formed and / or spring-elastically supported, for example on the insert element and / or on the receiving element, so that in the unlocked position a restoring force is applied to the movable part in the direction of the locked position. This has the effect that the movable part returns to the locked position by itself, unless otherwise prevented. This can further simplify assembly or disassembly. For example, the movable part can be spring-elastically supported by a separate spring element. Additionally or alternatively, the movable part itself can be designed to be elastically deformable in a suitable manner, thereby enabling a spring-elastic support.

[0036] According to one embodiment, the heating and / or temperature measurement device may comprise at least one of the following components: a (e.g., electric) heating element for heating the liquid and / or gas, and a temperature sensor for measuring the temperature of the liquid and / or gas. Furthermore, the heating and / or temperature measurement device may further comprise at least one of the following components: an electrical contact element for conductive contact with the (electrical) heating element and / or the temperature sensor, a sealing element (e.g., as described above) for sealing a gap between the receiving element and an insert element inserted into the receiving element, and a blocking element designed to define a maximum insertion depth of the insert element when inserted into the receiving element.

[0037] The blocking element, as part of the insert element, can prevent the user from pushing the insert element too far into the receiving element. The blocking element can, for example, be designed as a raised portion on the insert element, which can partially or completely surround the insert element. As a mating portion of the blocking element, the mounting structure can further have at least one protrusion in the receiving element for blocking the blocking element when the insert element is inserted, thereby preventing further insertion. The protrusion can, for example, be designed in the form of a raised ring and / or can include at least one bulge. The blocking element can, for example, be the stopper described above.

[0038] The heating element can be designed to convert electrical current into heat in a controlled manner and transfer the heat to the liquid and / or gas in the liquid chamber, for example to bring the liquid and / or gas to a temperature between 20° and 80° C. Furthermore, the heating element can be coupled to a temperature sensor to measure the actual temperature in the liquid chamber and / or can be automatically shut down via a safety circuit when it detects that it is getting too hot, for example due to no or too little liquid or no or too little gas in the liquid chamber.

[0039] The sealing element can be made of at least one of the following sealing materials: ethylene propylene diene rubber, chlorobutadiene rubber, natural rubber, ethylene vinyl acetate rubber, styrene butadiene rubber, acrylonitrile butadiene rubber, polyurethane rubber, polytetrafluoroethylene, silicone, silicone foam, and fiber-containing elastomer. The sealing element can be, for example, a sealing ring. In this case, the heating and / or temperature measurement device can include an annular recess for accommodating the sealing ring. The recess can be, for example, designed as a cutout in the material of the insert element. The sealing element can also be a sealing compound.

[0040] At least a part of the heating and / or temperature measuring device, for example at least a part of the electrical contact element, may be located outside the liquid chamber when the insertion element is (fully) inserted into the receiving element.

[0041] According to one embodiment, at least two or all components of the heating and / or temperature measuring device can be arranged one behind the other in the direction of their longitudinal axis. The heating and / or temperature measuring device can be designed elongated, e.g., rod-shaped. For example, a sealing element can be arranged between the heating element and the blocking element and / or between the temperature sensor and the blocking element, and / or a blocking element can be arranged between the sealing element and the electrical contact element.

[0042] According to one embodiment, the receiving element has at least one protrusion, which is designed such that when the insert element is inserted into the receiving element, it hits the blocking element, thereby preventing further insertion of the insert element.

[0043] According to one embodiment, the receiving element can be designed as a channel, in particular as a cylindrical channel, having an insertion surface, a limiting surface, a casing, and an inner wall. In this case, protrusions can be arranged on the limiting surface and / or the inner wall. A "casing" can be understood, for example, as an element that at least partially covers the longitudinal portion of the channel in its circumferential direction. The casing can also completely cover the longitudinal portion in its circumferential direction and / or can be designed, for example, in the shape of a ring, shell, and / or collar. An "inner wall" can be understood, for example, as at least a portion of the inner circumferential surface of the channel. The channel can, for example, have the same or similar cross-section as the insert element. For example, these two cross-sections can be formed complementary to each other, and / or the inner diameter (inner circumferential surface) of the channel can be slightly larger than the outer diameter (outer circumferential surface) of the insert element so that the insert element can be inserted into the receiving element without play or with a defined play. The insert element can be inserted into the receiving element via the insertion surface. The restriction surface can be located opposite the insertion surface, for example, in the direction of the central or longitudinal axis of the channel.

[0044] According to one embodiment, the connecting element, in particular the movable part, can include at least one locking element, for example in the form of a nose or hook, for locking the insert element to the receiving element. The locking element can be designed, for example, to lock the insert element to the receiving element when the movable part is moved to the locked position and / or to unlock the insert element from the receiving element when the movable part is moved to the unlocked position. The locking element can be arranged between the insertion surface and the limiting surface and / or between the insertion surface and the protrusion. Furthermore, the locking element can form an outlet that protrudes from the inner wall into the channel when the insert element is not inserted, and can be designed such that when the insert element is inserted into the receiving element, it can be pressed into the casing by the insert element and / or by manually (e.g., by a finger) actuating a pressure element for applying pressure to the outlet, so that the outlet no longer protrudes into the channel. For example, the state in which the locking element is housed in the casing can correspond to the unlocked position. In contrast, in the locked position the locking element engages form-fittingly in the insert element and / or can be hooked onto the insert element.

[0045] The pressure element can cooperate with the locking element to form a connecting element, in particular a movable part, for example a pressure element connected to the locking element that can be actuated by the user during insertion of the insertion element.

[0046] According to one embodiment, the insertion element may further include a holding portion for holding the insertion element with one hand, and / or the connection element (e.g., a movable part) may further include a holding portion for holding the connection element or the movable part with one hand. The holding portion may be designed to be at least partially outside the receiving element when the insertion element is inserted into the receiving element, for example, up to the sealed position. For example, the holding portion may be arranged next to the electrical contact element and / or between the electrical contact element and the blocking element along the longitudinal axis of the heating and / or temperature measurement device and / or the insertion element. This holding portion should allow a user to safely grip the insertion element and / or the connection element (e.g., a movable part) without touching the heating and / or temperature measurement device. Furthermore, the movable part may at least partially surround the holding portion of the insertion element and be designed to allow a user to safely grip the movable part.

[0047] According to one embodiment, the holding portion may include a ring-shaped body for sliding over the insertion element (e.g., over the heating and / or temperature measuring device) and holding arms projecting radially from the body for moving (e.g., rotating and / or displacing) the body relative to the insertion element (and / or receiving element).

[0048] The holding arm can have, for example, a flat grip element at its free end for gripping the holding arm with the thumb and index finger. In other words, the holding arm can be designed, for example, like a flag. The connecting element and / or the movable part can be formed at least partially by the body. For example, corresponding warning and / or operating instructions can be attached to and / or on the holding part, preferably on and / or on the holding arm and / or on the flat grip element. Such a holding part forms a particularly long lever arm for locking or unlocking the insertion element and / or for pressing the sealing element. Furthermore, such a holding part can serve as a particularly legible and unique position indicator for the locked or unlocked position. This can further improve ease of operation.

[0049] Furthermore, the holding part can be designed to be movable relative to the insertion element and / or the receiving element between a blocking position and a releasing position, such that in the blocking position it blocks the mechanical coupling of the medical device (e.g., a ventilator) with another device (e.g., a respiratory humidifier) ​​and in the releasing position it allows said coupling. The releasing position can correspond to the locked position and / or the blocking position can correspond to the unlocked position. In other words, the holding part can be designed such that the mechanical coupling can only take place when the insertion element is locked.

[0050] According to one embodiment, the mounting structure can be designed to perform an insertion movement, a sealing movement, and a closing movement to connect the insert element to the receiving element via the connecting element, whereby the insertion movement allows the insert element to be inserted into the receiving element, the sealing movement allows the insert element to be fluid-tightly connected to the receiving element, and the closing movement allows the insert element to be locked in the receiving element. The closing movement can further include a relative movement of a movable part with respect to the insert element and the receiving element.

[0051] According to one embodiment, the insertion movement can be at least partly performed in a direction parallel to the longitudinal axis of the heating and / or temperature measuring device and / or the insertion element.

[0052] According to one embodiment, the sealing can be performed by an insertion motion.

[0053] According to one embodiment, the sealing can be performed in a manner separate from the closing movement.

[0054] According to one embodiment, the closing movement can be performed at least partly obliquely or transversely to the longitudinal axis of the heating and / or temperature measuring device and / or the insert element.

[0055] According to one embodiment, the closing movement can comprise a rotation of the movable part relative to the insert element and / or the receiving element around the longitudinal axis of the heating and / or temperature measuring device and / or the insert element through a rotation angle of 30° to 180°, preferably 45° to 120°, particularly preferably 80° to 100° or 60° to 100°. The closing movement can follow a straight or curved path.

[0056] Sealing can be achieved, for example, by an insertion movement only along the longitudinal axis. A fluid-tight connection of the insert element with the receiving element can therefore be formed by inserting the insert element into the receiving element (up to the axial end stop) and applying an axial force to the sealing element during insertion. No additional (axial) force is therefore required for sealing. The closing movement can be achieved after sealing. In particular, the gap at the axial end positions between the receiving element and the insert element can be sealed independently of the rotation of the insert element around its longitudinal axis.

[0057] According to one embodiment, the mounting structure can further comprise a bayonet lock for locking the insertion element in the receiving element, in particular in the locked position. The bayonet lock can comprise, as its components, (at least) one male element and (at least) one female element complementary to the male element. The connecting element, in particular the movable part, can comprise a first part of the parts of the bayonet lock. Additionally or alternatively, the receiving element can comprise a second part of the parts of the bayonet lock.

[0058] To lock a bayonet lock, the male element can be moved relative to the mating female element from an unlocked position to a locked position, with the male element following the contours of the female element. Such movement typically requires much less force than the rotational movement of tightening a screw.

[0059] For example, the female element can be formed by at least one groove and / or the male element by at least one knob. A "knob" can generally be understood as a protuberance, in particular a rounded protuberance. The groove or grooves can extend helically in the direction of the protrusion, as viewed in its longitudinal direction, for example like a screw groove with a specific pitch. The groove or grooves can each form an angle of 90° or less, preferably 45° or less, with a plane passing through the insertion surface. The female element can be arranged, for example, on the insertion surface of the channel.

[0060] According to one embodiment, the connecting element, in particular the movable part, can be designed as a coupling element. The coupling element can include a coupling sleeve that is mounted on the insert element and is rotatable and / or displaceable relative to the insert element, and this sleeve can form a gripping element. The coupling element can also include the first part of the bayonet lock. Thus, undesirable relative movement of the (pressed) sealing element relative to the heating and / or temperature measuring device can be avoided. Such relative movement can potentially lead to the sealing element becoming dislodged or to excessive wear, which can lead to leakage. The coupling sleeve can be mounted in particular so that it is rotatable and / or displaceable between the locked and unlocked positions and / or on the insert element.

[0061] For example, the coupling sleeve may have two knobs opposite each other as male elements of a bayonet lock.

[0062] According to one embodiment, the coupling sleeve can be arranged on the holder, in particular so that it is at least partially outside the receiving element when the insert element is (e.g. fully) inserted into the receiving element. The coupling sleeve can be mounted on the insert element so that it can rotate and / or be displaceable relative to the holder.

[0063] According to one embodiment, the coupling element can be mounted displaceably relative to the holder along the longitudinal axis of the heating and / or temperature measuring device and / or the insertion element, wherein at least one retaining element can be formed on a face of the coupling element facing the holder to limit the path of the coupling element when displaced in at least one direction along the longitudinal axis.

[0064] Embodiments of the present invention will now be described with reference to the accompanying drawings, in which neither the description nor the drawings should be construed as limiting the scope of the invention. [Brief explanation of the drawings]

[0065] [Figure 1] 1A and 1B are diagrams showing a mounting structure according to an embodiment of the present invention; [Figure 2] 10A and 10B show a mounting structure according to another embodiment of the present invention. [Figure 3] 10A-10C show a receiving element of a mounting structure according to an embodiment of the present invention; [Figure 4] 1A and 1B show an insert element of a mounting structure according to one embodiment of the present invention. [Figure 5] 10A and 10B show a receiving element of a mounting structure according to another embodiment of the present invention. [Figure 6] 10A and 10B show an insert element of a mounting structure according to another embodiment of the present invention. [Figure 7] 6 shows a cross section of the storage element of FIG. 5. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0066] The figures are purely schematic and not to scale. Where the same reference signs are used in different figures, these signify the same or identical functional features.

[0067] FIG. 1 shows a mounting structure 1 for a heating device 2 in a medical device (not shown here). The mounting structure 1 comprises an insert element 6, a receiving element 8, and a connecting element 10 for connecting the insert element 6 and the receiving element 8. The receiving element 8 is designed as part of an outer housing 28 of a liquid chamber 30, which is designed as a humidification device for a respiratory treatment machine (not shown here). In the illustrated variant, the insert element 6 comprises a heating device 2, which also comprises a heating element 14 and an electrical contact element 20. The receiving element 8 is designed to at least partially receive the insert element 6, with the heating device 2 itself and the electrical contact element 20 being arranged outside the receiving element 8. The connecting element 10 has a movable part 12 relative to the insert element 6 and the receiving element 8, which at least partially surrounds the insert element 6 in the inserted state.

[0068] FIG. 2 shows an alternative embodiment of the mounting structure 1. To better visualize the individual components, the insert element 6 and the receiving element 8 are shown separated, i.e., unconnected. The receiving element 8 has a cylindrical channel 40 in which the insert element 6 is at least partially positioned after insertion. Furthermore, the receiving element 8 includes an insertion surface 42 facing toward the insert element 6 during insertion and a limiting surface 44 facing away from the insert element 6. The channel 40 has an inner wall 48 and a casing 46. A protrusion 50 is formed on the inner wall 48 near the limiting surface 44. This protrusion 50 blocks the insert element 6, particularly the blocking element 18 of the insert element 6, during insertion, thereby preventing further insertion along the longitudinal axis 24. The insert element 6 includes a temperature measuring device 4, which includes, along the longitudinal axis 24, an electrical contact element 20, a retaining portion 26, the blocking element 18, and a temperature sensor 22. A constriction 32 is formed between the blocking element 18 and the temperature sensor 22 to accommodate the sealing element 16, in particular the sealing ring 34 (not shown here). The connecting element 10 is attached to the holding part 26 and is designed here as a part 12 that is movable around the holding part 26 and partially surrounds the insert element 6. The movable part 12 is at the same time a grip element 78, on which a user can safely grip the insert element 6.

[0069] When the insert element 6 is inserted into the receiving element 8, the connecting element 10 connects the parts such that an insertion movement, a sealing, and a closing movement occur. The closing movement involves a relative movement, here a rotational movement, of the movable part 12. The insertion movement occurs here along the longitudinal axis 24. The closing movement occurs orthogonally to the longitudinal axis 24. Sealing by the sealing element 16 (not shown) is substantially achieved by the insertion movement along the longitudinal axis 24 and is substantially decoupled from the closing movement.

[0070] 3 shows a first embodiment of a receiving element 8. The illustrated variant of the receiving element 8 has an insertion surface 42 that faces the insert element 6 during insertion, a limiting surface 44 (not shown here), and a channel 40 that includes an inner wall 48 and a casing 46. The inner wall 48 is formed with a protrusion 50 that blocks the insert element 6 during insertion. The portion of the receiving element 8 shown forms a female element 60 (the counterpart in FIG. 4) of a bayonet lock that has two grooves 70 that extend helically in the direction of the protrusions 50. Each groove 70 forms an angle 80 of less than 45° with the insertion surface 42.

[0071] FIG. 4 shows a first embodiment of the insertion element 6. The movable part 12 forms the male element 58 of the bayonet lock and corresponds to the receiving element 8 of FIG. 3. The movable part 12 is here designed as a coupling element 62 that is movably seated on the holding part 26. The coupling element 62 is designed as an attached, rotatable coupling sleeve 64 that simultaneously forms a grip element 78 by which the user can safely grip the insertion element 6. The coupling sleeve 64 has two knobs 66 that can be received by grooves 70 ( FIG. 3 ) in the receiving element 8. The coupling element 62 is mounted so that it can be displaced around the holding part 26 along the longitudinal axis 24. The two grip elements 68 prevent the coupling element 62 from coming off the holding part 26 and limit its displacement along the longitudinal axis 24. The closing movement by the bayonet lock here involves a rotational movement around the longitudinal axis 24, which rotation is greater than 90°.

[0072] FIG. 5 shows a second embodiment of the receiving element 8. This differs from the variant of the bayonet lock shown in FIGS. 3 and 4 in that the connecting element 10 in the form of a movable part 12 is part of the receiving element 8. The movable part 12 is here designed as a locking element 72 between the insertion face 42 and the limiting face 44 (not shown here) and is located in front of the protrusion 50 from the insertion face 42. The locking element 72 is designed as an outlet 74 protruding from the inner wall 48 into the channel 40. When the insertion element 6 is inserted into the receiving element 8, the insertion element 6 exerts pressure on the locking element 72, so that it is received in the casing 46 and no longer protrudes into the channel 40. Alternatively or additionally, pressure can be exerted on the locking element 72 by activating a pressure element 76, which is connected to the locking element 72 and together with the locking element 72 forms the connecting element 10, in particular the movable part 12.

[0073] Figure 6 shows a second embodiment of an insert element 6, which is compatible with the receiving element 8 shown in Figure 5. Viewed in the direction of the longitudinal axis 24, the insert element 6 comprises an electrical contact element 20, a holding part 26, a block element 18 and a heating element 14, which here is designed as a cylindrical heating rod 36. Between the block element 18 and the heating element 14 is located a sealing element 16, which here is designed as a sealing ring 34.

[0074] 7 shows a cross section of the receiving element 8 shown in FIG. 5. The connecting element 10 is here designed as a movable part 12. In this case, the movable part 12 has a locking element 72 in front of the protrusion 50. The locking element 72 is designed as an outlet 74 protruding from the inner wall 48 into the channel 40. Furthermore, the movable part 12 comprises a pressure element 76, which here is connected to the locking element 72. By pressing the pressure element 76, the movable part 12 moves into the channel 40 so that the outlet 74 lies flat on the casing 46 and no longer protrudes into the channel 40.

[0075] Finally, it is noted that the words "having", "comprising", "including", "with" and the like do not exclude other elements or steps, and the indefinite article "a", "an", or "an" does not exclude a plurality.

[0076] Furthermore, it is noted that features or steps described with reference to one of the above embodiments may also be used in combination with features or steps described with reference to other of the above embodiments.

[0077] Any reference signs in the claims should not be construed as limiting the scope of the subject matter defined by the claims. [Explanation of symbols]

[0078] 1 Mounting structure 2 Heating device 4 Temperature measuring device 6 Insertion Elements 8. Housing Elements 10 Connecting Elements 12 Moving Parts 14 Heating element 16 sealing elements 18 Block Elements 20 Electrical Contact Elements 22 Temperature sensor 24 Longitudinal Axis 26 Holding part 28 Outer housing 30 Liquid Chamber 32 Narrowed part 34 Seal ring 36 Heating rod 38 Dip Tube 40 channels 42 Insertion surface 44 Restriction Surface 46 Casing 48 Inner wall 50 Protrusion 58 Male Elements 60 female elements 62 Bonding Elements 64 coupling sleeve 66 Knob 68 Holding Element 70 groove 72 Locking element 74 Exit 76 Pressure Elements 78 Grip Elements 80 Angle between groove and insertion surface

Claims

1. A mounting structure (1) for a medical device, the mounting structure (1) comprising: a receiving element (8) that can be attached to the attachment part of the medical device; an insert element (6) insertable into said receiving element (8) and including a heating and / or temperature measuring device (2, 4) for heating and / or measuring the temperature of a liquid and / or gas in a liquid chamber (30) of said medical device; a connecting element (10) for connecting said insert element (6) to said receiving element (8); Equipped with The connection element (10) includes a part (12) that is movable relative to the receiving element (8) and / or the insertion element (6) between a locked position and an unlocked position, and the movable part (12) is configured to lock the insertion element (6) inserted into the receiving element (8) in the locked position so that the insertion element (6) cannot be removed from the receiving element (8), and to release the insertion element (6) in the unlocked position so that the insertion element (6) can be removed.

2. 2. The mounting structure (1) according to claim 1, wherein the movable part (12) is displaceable between the locked position and the unlocked position and / or rotatable around the rotation axis (24) through a rotation angle of up to 360°, preferably up to 180°, particularly preferably up to 90°.

3. 3. The mounting structure (1) according to claim 1 or 2, wherein the insert element (6) can be inserted into the receiving element (8) up to a sealing position, and in the sealing position is liquid-tightly connected to the receiving element (8), and the gap between the insert element (6) and the receiving element (8) is sealed so that liquid and / or gas cannot leak from the liquid chamber (30) to the outside through the gap.

4. 4. The mounting structure (1) according to claim 3, wherein the mounting structure (1) is designed such that the insertion element (6) can be inserted to the sealing position without rotating the insertion element (6) and / or the movable part (12) relative to the receiving element (8) around the rotation axis (24) by more than 360°, preferably more than 180°, particularly preferably more than 90°.

5. the mounting structure (1) further comprises a sealing element (16) for sealing the gap, the sealing element (16) being designed to be compressed by the insert element (6) and / or the connecting element (10) and / or the movable part (12) on the one hand, and by the receiving element (8) on the other hand, in order to connect the insert element (6) to the receiving element (8) in a fluid-tight manner when the insert element (6) is inserted up to the sealing position; and / or the movable part (12) is designed to exert a force on the insert element (6) and / or the receiving element (8) in the locked position, acting in the direction of the sealing position; and / or 5. The mounting structure (1) according to claim 3 or 4, wherein the insertion element (6) inserted up to the sealing position abuts against at least one stop designed to prevent the insertion element (6) from being inserted further beyond the sealing position.

6. 6. The mounting structure (1) according to claim 1, wherein the movable part (12) is resiliently designed and / or resiliently supported such that in the unlocked position a restoring force is applied to the movable part (12) in the direction of the locked position.

7. The heating and / or temperature measuring device (2, 4) comprises at least one of the following components: a heating element (14) for heating liquids and / or gases; Temperature sensor (22) for measuring the temperature of a liquid and / or gas Including, The heating and / or temperature measuring device (2, 4) comprises at least one of the following components: an electrical contact element (20) for making conductive contact with said heating element (14) and / or said temperature sensor (22); a sealing element (16) for sealing the gap between the receiving element (8) and the insert element (6) inserted into the receiving element (8); a block element (18) designed to determine the maximum insertion depth of the insert element (6) when inserted into the receiving element (8); The mounting structure (1) according to any one of claims 1 to 6, further comprising:

8. 8. The mounting structure (1) according to claim 7, wherein the receiving element (8) has at least one protrusion (50) which is designed so that when the insert element (6) is inserted into the receiving element (8), it hits the blocking element (18) and thereby prevents further insertion of the insert element (6).

9. The receiving element (8) is designed as a channel (40), in particular as a cylindrical channel (40), having an insertion surface (42), a limiting surface (44), a casing (46) and an inner wall (48), 9. The mounting structure (1) according to claim 8, wherein the protrusion (50) is arranged on the limiting surface (44) and / or on the inner wall (48).

10. the connecting element (10), in particular the movable part (12), comprises at least one locking element (72) for locking the insert element (6) to the receiving element (8), the locking element (72) is disposed between the insertion surface (42) and the limiting surface (44) and / or between the insertion surface (42) and the protrusion (50); 10. The mounting structure (1) according to claim 9, wherein the locking element (72) forms an outlet (74) that protrudes from the inner wall (48) into the channel (40) when the insert element (6) is not inserted, and is designed so that when the insert element (6) is inserted into the receiving element (8), it is pressed into the casing (46) by the insert element (6) and / or by manually activating a pressure element (76) for applying pressure to the outlet (74), so that the outlet (74) no longer protrudes into the channel (40).

11. The mounting structure (1) according to any one of claims 1 to 10, wherein the insertion element (6) further comprises a holding portion (26) for holding the insertion element (6) with one hand, the holding portion (26) being designed to be at least partially located outside the receiving element (8) when the insertion element (6) is inserted into the receiving element (8).

12. a bayonet lock for locking the insertion element (6) in the receiving element (8) in the locked position, the bayonet lock including a male element (58) and a female element (60) complementary to the male element (58) as part of the bayonet lock; said connecting element (10), in particular the movable part (12), comprises a first of said parts of said bayonet lock; and / or Mounting structure (1) according to any one of the preceding claims, wherein the receiving element (8) comprises a second one of the parts of the bayonet lock.

13. 13. A mounting structure (1) according to claim 12, wherein the connecting element (10), in particular the movable part (12), is designed as a coupling element (62), which is mounted on the insertion element (6) and is rotatable relative to the insertion element (6), and which comprises a coupling sleeve (64) forming a grip element (78) and the first part of the bayonet lock.

14. the coupling sleeve (64) is attached to the holding part (26), in particular so as to be at least partially outside the receiving element (8) when the insert element (6) is inserted into the receiving element (8); and / or 14. A mounting structure (1) according to claim 13, which is dependent on claim 11, wherein the coupling element (62) is supported displaceably relative to the holding portion (26) along the longitudinal axis (24) of the heating and / or temperature measuring device (2, 4) and / or the insert element (6), and at least one holding element (68) is formed on the side of the coupling element (62) facing the holding portion (26) to limit the path of the coupling element (62) when displaced in at least one direction along the longitudinal axis (24).

15. A medical device, a liquid chamber (30); A mounting portion; The mounting structure (1) according to any one of claims 1 to 14, Equipped with The receiving element (8) of the mounting structure (1) is attached to the mounting part.

Images