51 results about "Artificial respiration" patented technology

The invention relates to a signal processing unit and a method which performs an estimation (Sig res,est ) for a respiratory signal. This respiratory signal is a measure of a patient's own spontaneous breathing and / or mechanical ventilation. A summed signal (Sig) is calculated from measurements taken in or on the patient's body. Sum ) generates a signal that includes the respiratory and a cardiogenic signal. By influencing the sum signal (Sigmoidal frequency), the influence of cardiac activity on the sum signal (Sigmoidal frequency) is determined. Sum ) is compensated, an intermediate signal (Sig) is used. com ) calculated. A reference attenuation signal section describes the average time course of the contribution of the cardiogenic signal to the intermediate signal (Sig). com For each detected heartbeat, an intermediate signal segment [SigA] is generated. com (x)] is generated. From this, a damped intermediate signal section [SigA] is created. com,d(x)] is generated, for which a fitted attenuation signal section [Mod(1)(x), ..., Mod(n)(x)] is applied to the intermediate signal section. The fitted attenuation signal section [Mod(1)(x), ..., Mod(n)(x)] is calculated from the reference attenuation signal section using at least one quality measure [Q(30), Q(31)].

The invention relates to a breathing system and a breathing method for artificial respiration of a patient. The invention further relates to a control assembly and a control method for controlling a breathing assembly belonging to a breathing system. The anesthetic meter member (38) provides an anesthetic gas mixture (Ng) having a predetermined theoretical concentration (conreq) of the anesthetic (Nm). The respirator (12) delivers a breathable gas mixture with an anesthetic gas mixture (Ng) to the patient-side coupling unit. The setpoint concentration (conreq) is specified in such a way that the setpoint concentration is at most equal to the calculated upper concentration limit (conmax). The higher the temperature in the anesthetic meter member (38), in the ventilator (12) and / or in the ambient environment, the higher the concentration upper limit (conmax). The present invention reduces the risk of anesthetic (Nm) coagulation.

The invention relates to a compressor (1) for conveying an air flow and / or a gas flow and to a breathing apparatus or an anaesthesia apparatus with such a compressor (1). The compressor (1) has a housing (2) in which a compressor wheel (6) is arranged in a rotatable manner and is connected to an electric motor (5) by means of a drive shaft (4), an air flow and / or a gas flow being conveyed from an inlet (9) arranged upstream on a suction side (7) of the compressor wheel (6) through a flow channel (11) to an outlet (9) arranged downstream on a pressure side (8) of the compressor wheel (6) when the compressor wheel is rotated. The invention is characterized in that the compressor wheel (6) arranged in the housing interior (3) is at least partially surrounded by the housing and by a cover element (12), the housing being designed as a collecting housing (2) for the air flow and / or the gas flow coming from the compressor wheel (6) and being arranged at least partially on the pressure side (9) of the compressor wheel (6), the cover element being arranged at least partially on the suction side (7) of the compressor wheel (6) and being separated from the compressor wheel (6) at least partially by a gap (13), wherein at least one decoupling element (15) is arranged between the cover element (12) and the collecting housing (2) and between a functional component (14) connected at least indirectly to the compressor wheel (6) and / or to the electric motor (5) and the collecting housing (2) respectively for damping and at least partial sealing of the housing interior (3) from the surroundings (16).

The present disclosure provides a unique solution for assisting in the ventilation of lungs of subject that is performed by artificial mechanical ventilator. The solution of the present invention improves the efficiency of the ventilation effect by applying desired pressure profile on portions of the upper body part of the subject in synchronization with the mechanical ventilator operation, thereby creating a desired pressure profile or gradient in the lungs airways to ensure that air pumped into the lungs by the mechanical ventilator spreads more homogeneously in the lungs than without the intervention of the system of the present invention. The application of pressure is determined after analyzing data from sensors of the system that are placed on a plurality of portions on the upper body part of the subject and data received from the mechanical ventilator. These sensors sense data indicative of the ventilation profile within the lungs, i.e. pressure profile along different portions of the lung. The system provides extra-thoracic pressure on the rib cage according to pre-defined and adaptive algorithms based on the physiological status, the respiratory mechanics, and the inhomogeneous nature of lung injury. By applying pressure to the hyperventilated areas and reducing the transpulmonary pressure gradient, the system prevents hyperinflation trauma to the open areas and atelecto-trauma to the closed areas. The system is synchronized with the mechanical ventilator and adapt to changes in the patient's respiratory mechanics.

A system to simulate breathing by a human occupant of an enclosed structure, such as vehicle, for testing, validating and verifying operation of CO2-based human presence detection systems, having a doll with dimensions corresponding to a specific human age, size, or both; a compressible breather bulb having an interior gas volume corresponding to a single breath gas volume corresponding to the specific human; an exhale gas reservoir which is collapsible at ambient atmospheric pressure; valves to control the movement of the exhale gas; wherein the reservoir collapses as gas is exhaled to simulate exchanging of gas during inhales and exhales.

The invention provides a first-aid kit, and relates to the technical field of first-aid kits, the first-aid kit comprises a kit body, a plurality of accommodating cavities, two side support brackets, a blast bag, a pipeline system and a mask system, bracket stress interlayers are arranged on the outer sides of the two opposite accommodating cavities, an elastic reset plate is preset on the kit body between the two bracket stress interlayers, the pipeline system is mounted on the blast bag, and the mask system is mounted on the blast bag. A plurality of hook-and-loop fastener hook faces adhere to the outer side of the blast bag, a hook-and-loop fastener rough face is arranged on the inner side of the bag body, the mask system is communicated with the pipeline system, the pipeline system comprises a linkage valve device and a corrugated pipe, the linkage valve device comprises a linkage valve body, an air outlet pipe, a one-way valve and a fracture type sealer, the linkage valve body is installed on the blast bag, the air outlet pipe is installed on the linkage valve body, and the corrugated pipe is installed on the corrugated pipe. The one-way valve is installed on the linkage valve body, the fracture type sealer is installed on the linkage valve body and seals the one-way valve, the corrugated pipe is installed on the air outlet pipe, the corrugated pipe is communicated with the mask system, and the artificial respiration function is achieved.

The invention discloses a visual teaching method based on virtual fusion of AI and MR technologies, and relates to the technical field of virtual reality. The visual teaching method based on AI and MR technology virtual fusion comprises the following steps of artificial respiration qualification evaluation, artificial respiration action evaluation and artificial respiration rhythm evaluation. Whether to switch AI voice guidance or not is judged according to the artificial respiration qualification evaluation coefficient obtained through the artificial respiration data, and then whether to carry out MR simulation guidance or not is judged according to the action specification evaluation index obtained through the artificial respiration action data. Finally, whether MR rhythm simulation teaching is carried out or not is judged according to the artificial respiration rhythm evaluation index obtained through the pressing time data and the artificial respiration data, the effect of more accurately evaluating visual teaching of artificial respiration is achieved, and the problem that visual teaching evaluation of artificial respiration is not comprehensive in the prior art is solved.

The utility model discloses a paper tube shaping device, which relates to the technical field of paper tube processing, and comprises a paper tube machine main body, a collecting structure is arranged at the top end of the paper tube machine main body, the collecting structure comprises a first collecting tank and an electrostatic roller, a second collecting tank is arranged in an inner cavity of the first collecting tank, and a friction component is arranged between the electrostatic roller and the first collecting tank. Through the arrangement mode that the collecting structure is matched with the supporting and driving structure, scraps generated by friction between paper and the paper core cylinder can be collected, and when falling into the adhesion range of the electrostatic roller, the scraps can be adhered to the electrostatic roller, so that the paper core cylinder is prevented from being damaged. The paper tube shaping device has the advantages that the paper tube shaping device is simple in structure and convenient to use, so that pollution to a processing environment and injury to an artificial respiratory tract caused by splashing of chippings can be avoided, the paper tube shaping processing environment is effectively improved, and convenience is provided for cleaning the chippings falling onto an electrostatic roller and in a collecting tank body under the arrangement of a supporting and driving structure.

The application discloses a multi-angle CPR training video detection based on machine vision, and has the characteristics of establishing an LCSG-YOLO model, preparing work, designing a KCHT matching algorithm and formulating a scoring standard.Compared with the prior art, the application has the advantages that: through pure machine vision technology, the key targets in cardiopulmonary resuscitation are accurately detected, and appropriate frequency of cardiopulmonary compression and artificial respiration is ensured, especially in a complex dynamic environment, efficient and accurate evaluation is ensured, a customized data set for CPR evaluation is constructed, an LCSG-YOLO model is trained based on the data set, and the system automatically evaluates the CPR operation according to the preset standard to determine whether the CPR operation meets the standard through video uploading, without relying on sensors, thereby providing scientific support for CPR quality improvement and training and promoting the popularization of intelligent evaluation application.

The invention provides an artificial respiration assisting device suitable for a first-aid scene, and relates to the technical field of artificial respiration assisting equipment. The mask comprises an upper mask body and a lower mask body, the upper mask body is arranged at the top of the lower mask body, an air inlet connector is arranged at one end of the upper mask body, bandages are symmetrically arranged on the two sides of the upper mask body, a partition plate is arranged between the upper mask body and the lower mask body, and an air guide hole is formed in the side, close to the air inlet connector, of the partition plate; an occlusion square pipe is vertically arranged on the bottom surface of the partition plate, the occlusion square pipe is oppositely arranged below the air guide hole, the outer wall of the bottom of the occlusion square pipe is sleeved with a rubber sleeve, and a notch is formed in one side of the top of the occlusion square pipe; the nose clip assembly comprises an elastic closing part and a nose clamping part; an extrusion assembly; the extrusion assembly can automatically extrude the balloon, so that oxygen is output, and personnel interference during emergency treatment is not needed; when oxygen is supplied, the nose clamping part can clamp the nose of a patient.

The invention relates to an emergency breathing device (10) for performing emergency medical artificial respiration on a patient, comprising: a housing with an ambient air intake opening and a respiratory gas outlet opening; a fan; an air filter; and an energy storage device for supplying energy to the fan for its operation, wherein the air filter is accessible via a housing opening that is closed by means of a housing cover but can be opened and is accommodated in the housing in a conventionally replaceable manner, and wherein the energy storage device is accessible via a housing opening that is closed by means of a housing cover but can be opened and is accommodated in the housing in a conventionally replaceable manner, the emergency breathing device being characterized in that the air filter and the energy storage device are accessible via a common housing opening, wherein the common housing opening can be selectively closed and opened by means of a common housing cover.

The invention discloses an external chest compression device which comprises a bottom plate, a mounting frame, a compression part, a compression driving source, an air nozzle and an inflation structure. The pressing piece is mounted on the mounting frame in a manner of moving up and down; the pressing driving source is connected with the pressing piece and can regularly drive the pressing piece to reciprocate up and down for 50 times every 30 seconds and pause once after the pressing piece reciprocates up and down for 30 times every time; the air tap can be contained in the mouth and is connected with an air pipe; the air inflation structure is communicated with the air pipe, and air can be fed into the air nozzle twice continuously during each pause period of the pressing piece. The problem that rescuers are tired due to manual external chest compression can be solved, in addition, two actions of artificial respiration can be carried out while external chest compression is carried out, and the rescue operation action is greatly simplified.

A breathing gas humidifier (1) having a housing (20) with a housing upper part (21) and a housing lower part (23) with a water chamber (5) for humidifying and / or heating breathing gas, comprising a breathing gas inlet (2) and a breathing gas outlet (4), a breathing gas path (3) for conducting breathing gas from the breathing gas inlet (2) to the breathing gas outlet (4) is formed between the breathing gas inlet and the breathing gas outlet, which path runs through the water chamber (5), the breathing gas path (3) comprising a water-tight channel (8) for conducting humidified and / or heated breathing gas, a channel (8) opens into the water chamber (5) at one end (7) and opens into the breathing gas outlet (4) at the other end, and the channel (8) is designed such that the breathing gas outlet (4) is arranged on the housing lower part (23) and / or is at least partially formed by the housing lower part.

The invention relates to a respiratory device (10) for artificially respiring a patient (12), wherein a control device (18) is designed to control the flow changing device (16) to perform a P / V action, wherein in an inspiration phase, breathing gas is supplied to the patient (12) while increasing the breathing gas pressure, and in an expiration phase, after the pressure increase has ended, the breathing gas flows passively out of the patient, wherein during the inspiration phase and during the expiration phase, for a plurality of breathing gas pressures, an action-breathing gas volume associated with the currently prevailing breathing gas pressure, which is present in the patient due to the P / V action, is determined. According to the present invention, the control device (18) is configured to: - determine a sequence of compliance values ​​based on the signals of the flow sensor device (44) and the pressure sensor device (27) during the inhalation phase; - determine a reference compliance value based on the sequence of compliance values; - determine a termination compliance value as a criterion for terminating the inhalation phase, based on the reference compliance value, as a threshold value, which is different in magnitude from the reference compliance value; and - terminate the inhalation phase if the termination compliance value is reached or passed.

A signal processing unit and method for determining a respiratory signal. The invention relates to a signal processing unit and a method of determining an estimate for a respiratory signal. The respiratory signal is a measure of the patient's own spontaneous respiratory activity and / or artificial respiration. A sum signal is generated from measurements measured in and / or at a body of a patient, the sum signal including a respiratory signal and a cardiac signal. An intermediate signal is calculated by compensating for the effects of cardiac activity on the sum signal. The reference attenuation signal segments describe an average time variation process of the contribution of the cardiac signal to the intermediate signal. For each heartbeat detected, an intermediate signal segment is generated. An attenuated intermediate signal segment is generated from the intermediate signal segment, for which purpose the adapted attenuated signal segment is applied to the intermediate signal segment. An adapted attenuated signal segment is calculated from the reference attenuated signal segment using at least one quality metric.

The utility model belongs to the field of artificial respiration devices, and particularly relates to a clinical artificial respiration device which comprises a placing plate. An inflator body is arranged at the top of the placing plate; a mounting assembly is arranged between the placing plate and the inflator body; the output end of the inflator body is connected with an air delivery pipe; an arc-shaped covering cover is mounted on the side wall of the gas conveying pipe; a rubber pad is mounted at the bottom of the arc-shaped covering cover; a mounting block is in sliding fit with the middle of the rubber pad; an elastic belt is mounted at the bottom of the mounting block; a winding assembly is arranged at the end part of the elastic band; the arrangement of the mounting assembly can carry out mounting limiting on the placing plate and the inflator body, the deviation of the inflator body during clinical use is reduced, the arrangement of the rolling assembly can carry out rolling adjustment on the elastic band, the inflator is suitable for different patients to wear, and the stable mounting effect of the inflator of the clinical artificial respiration device is enhanced.

1. The name of the design product: display screen panel for graphical user interface of external defibrillator. 2. The use of the design product: the display screen panel is used for display, and the display screen panel is used for defibrillator. 3. The design points of the design product: the content of the graphical user interface. 4. The picture or photo that best shows the design points: design 1 front view. 5. The design product is a graphical user interface (GUI) design, and the omitted views are the conventional design, and the omitted rear view, left view, right view, top view, and bottom view. 6. Design 1 is designated as the basic design. 7. The use of the graphical user interface: for indicating the operator to perform rescue on the patient with sudden cardiac arrest symptoms. 8. The change state description of the graphical user interface: design 1 front view indicates the process of pasting electrode pads on an adult, after pasting is completed, enters design 1 interface change state figure 1 to analyze the heart rhythm of the patient, after analysis is completed, if the patient needs defibrillation treatment, charging is started, after charging is completed, enters design 1 interface change state figure 2 to prompt the operator to press the flashing shock button, after the operator presses the shock button, design 1 interface change state figure 3 and design 1 interface change state figure 4 are displayed alternately to perform cardiopulmonary resuscitation compression and artificial respiration on the patient according to the device voice prompt; design 2 front view indicates the process of pasting electrode pads on a child, after pasting is completed, enters design 2 interface change state figure 1 to analyze the heart rhythm of the patient, after analysis is completed, if the patient needs defibrillation treatment, charging is started, after charging is completed, enters design 2 interface change state figure 2 to prompt the operator to press the flashing shock button, after the operator presses the shock button, design 2 interface change state figure 3 and design 2 interface change state figure 4 are displayed alternately to perform cardiopulmonary resuscitation compression and artificial respiration on the patient according to the device voice prompt.

1. The name of the design product: double channel nasopharyngeal airway. 2. The use of the design product: for placing from the nostrils into the pharynx of a patient, creating a temporary artificial respiratory airway for the patient. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view.

The utility model discloses an artificial respiration nursing device, and relates to the technical field of medical instruments. Comprising a main body and a first air suction pipe, a storage battery for power supply is fixedly installed on the inner bottom wall of the main body, a cavity for storage is fixedly installed on the inner bottom wall of the main body, an atomizer for treatment is in through connection with the upper surface of the cavity, and a medicine storage bin for storage is in through connection with the top end of the atomizer; the bottom end of the first air suction pipe is in through connection with an inner pipe used for transportation, and a cotton layer used for filtering is fixedly installed on the inner side wall of the inner pipe. The cotton layer, the second air suction pipe and the filter layer are arranged in a matched mode, the cotton layer and the filter layer can absorb water drops generated in the breathing process of a patient, liquid is prevented from entering the body of the patient, and therefore continuity of artificial respiration and sanitation of the breathing environment are kept, and meanwhile the second air suction pipe is arranged, so that the breathing effect is improved. And unnecessary contact can be reduced for a patient, so that transmission of viruses or bacteria is greatly reduced.

The invention relates to the technical field of medical training, and particularly discloses a cardiac resuscitation simulation training device which comprises a human body model and further comprises a body shape simulation assembly which is arranged on the upper side of a supporting piece and used for controlling the human body model to simulate different body shapes of a human body; the body shape simulation assembly can be regulated and controlled randomly through the adjusting assembly, so that the body shape simulation assembly simulates different body shapes of different human bodies of the human body model randomly, the authenticity of simulation training is improved, and different body shapes simulated by the body shape simulation assembly can be regulated and controlled according to the adjusting assembly through the depth pressing assembly; the pressing depth required by the current body type is automatically adjusted, artificial respiration during cardiac resuscitation can be simulated through the air blowing assembly, different body types simulated by the body type simulation assembly are adjusted and controlled according to the adjusting assembly, and the air blowing amount and the air blowing time required by the current body type are automatically adjusted.

The present invention relates to a medical device having a breathing gas source (2) and a control system (3, 4, 5), and a housing (1) having a receiving part (7) and an interface (6) on the bottom (8) of a recess (9) for receiving different data transmission rods (19) and data storage rods (20).

The mouth-to-mouth artificial respiration auxiliary device comprises a nose gel patch and a maxillofacial region gel patch provided with a breather pipe, the end, penetrating through the maxillofacial region gel patch, of the breather pipe is a patient breathing end, the other end of the breather pipe is a rescuer blowing end, a one-way valve is arranged in the breather pipe, and the other end of the breather pipe is a rescuer blowing end. The one-way valve is used for conducting air blown from the air blowing end of the rescuer to the breathing end of the patient and preventing the air from flowing back; one or more exhaust holes are formed in the side wall of the ventilation pipe, and gas entering the ventilation pipe from the breathing end of the patient can be exhausted from the exhaust holes; direct oral cavity contact is avoided through the breather pipe, the risk of infectious diseases is relieved, smooth ventilation is guaranteed through the one-way valve, gas backflow is prevented, gas exhaled by a patient is exhausted through the exhaust hole to prevent the gas exhaled by the patient from being retained in the breather pipe, meanwhile, the exhaled gas is prevented from being inhaled by a rescuer, and the rescue effect is improved. By using the device, the artificial respiration operation difficulty can be reduced, the manufacturing cost of the device is reduced, and the ventilation efficiency and the using effect of the device are ensured.

The present invention provides an artificial respiration first aid training device, comprising a manikin made of a flexible material, an indicator light provided on the manikin, a mounting shell provided within the manikin, a liftable pressing block and a fixedly mounted support rail provided within the mounting shell, a first elastic member provided between the bottom of the pressing block and the mounting shell, a push frame slidably provided on the support rail, two sets of double switches provided at intervals on the support rail, the two sets of double switches forming a double-control switch circuit with the indicator light and an internal power supply, the double switches being triggered during movement of the push frame, a transmission assembly connected to the pressing block provided on the support rail, and the pushing frame being driven to slide along the axis of the support rail by the transmission assembly during descent of the pressing block. The device can be used to train the pressing force, thereby preventing improper pressing force from causing reduced artificial respiration effectiveness or damage to the patient's sternum and lungs.

1. Name of the product in this design: Inflatable throat mask. 2. Purpose of this design: To be inserted into a patient's esophagus to create a temporary artificial airway for the patient. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

1. Name of the product in this design: Endotracheal tube. 2. Purpose of this design: To establish an artificial breathing channel for patients. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The present invention relates to a smart water rescue cabinet for a smart lamp pole in the technical field of street lamp devices, comprising a base, a lamp pole, a lamp, a cabinet body, a pivot shaft, a cabinet door, shelves, hinge rods, a mounting seat, a mounting sleeve, a storage seat, a back plate, a display screen, and a driving device. The driving device can drive the plurality of shelves to correspondingly flip up and down, and the driving device can drive the display screen to flip up and down. The driving device drives the pivot shaft to rotate, and the pivot shaft rotates to drive rotation of the cabinet door, thereby enabling an open side of the cabinet body to be quickly opened. Additionally, in the process of opening the cabinet door, the driving device can drive the plurality of shelves to flip downwards, so that rescue materials placed on the shelves can swing downwards, and rescue personnel can quickly find the corresponding rescue materials, thereby saving rescue time. Also, the driving device drives the display screen to flip downwards, so that the display screen can flip downwards, and action demonstration video content of artificial respiration is played on the display screen at the same time.

1. Name of the designed product: artificial resuscitator (for adults, children and infants). 2. Use of the designed product: artificial resuscitator for cardiopulmonary resuscitation and emergency artificial respiration. 3. Design points of the designed product: in shape. 4. Picture or photo best indicating the design points: perspective view 1. 5. Other circumstances or explanations: the transparent material at A of perspective view 1.

The invention provides a tracheostomy tube training anthropomorphic dummy, and relates to the technical field of medical instruments. The tracheostomy tube training simulation human comprises a simulation human body, an airway management model is arranged in the simulation human body, and the airway management model is used for simulating tracheal intubation, artificial respiration mask ventilation, oral airway liquid foreign matter suction and annular cartilage pressing operation training. An adjustable mechanism is further arranged in the anthropomorphic dummy body, the airway management model is arranged in the adjustable mechanism in a penetrating mode, the adjustable mechanism comprises an outer connecting ring, an adjusting frame and an inner connecting ring, an inner supporting frame is fixedly arranged at the inner bottom of the adjusting frame, and a rotating frame is rotationally arranged at the upper end of the inner supporting frame; and a connecting cylinder is fixedly arranged at the middle position in the rotating frame. Various tracheal symptoms can be flexibly adjusted and simulated through the adjustable mechanism, the training pertinence is improved, and the ability of medical staff to deal with actual conditions is enhanced.

The invention relates to the technical field of first-aid skill training, in particular to a cardio-pulmonary resuscitation simulation training system which comprises a server side and a user side which are in communication connection. The user side comprises a cardio-pulmonary resuscitation simulation device and terminal equipment; the cardio-pulmonary resuscitation simulation device comprises a positioning module, a control module, a pressing module, an artificial respiration module and an AED module, wherein the pressing module, the artificial respiration module and the AED module are detachably arranged on the positioning module and electrically connected with the control module. The compression module is used for simulating an external chest compression operation process and collecting compression operation data of a user; the server side is used for sending a training task to the user side, receiving pressing operation data sent by the user side, analyzing and processing the pressing operation data and sending a feedback result or an error correction result to the user side; and the terminal equipment is used for displaying a training task interface, receiving user input and displaying a feedback result or an error correction result. According to the invention, simulation and data acquisition functions of various key first-aid operations can be integrated, and comprehensive training and evaluation of a complete cardio-pulmonary resuscitation process are supported.

The invention relates to an adapter (1) for establishing a flow channel (2) between a breathing gas supply device and a patient connection, and to an assembly and a system for artificial respiration or respiratory support, respectively, having such an adapter (1). The adapter (1) has a first connection structure (3) for connection with a breathing gas supply device and a second connection structure (4) for connection with a patient connection. The described technical solution is characterized in that a bypass channel (5) branching off from the flow channel (2) is provided with an extraction opening (7) which can be closed at least temporarily by a safety valve (6), and the safety valve (6) is embodied such that the extraction opening (7) is closed when the artificial respiration pressure present in the flow channel (2) is less than the pressure present on the side of the safety valve facing away from the flow channel (2).