114 results about "Anaesthesia machine" patented technology

The invention relates to an anaesthesia machine control system. The system specifically comprises an acquisition module, an information interaction module, an information processing module, a gas monitoring control module, a standby power supply, a power monitoring module and a display screen, the power monitoring module is used for monitoring an external power supply state in real time, when external power supply is abnormal, the standby power supply is immediately switched, and meanwhile, the power monitoring module also monitors the state of the standby power supply in real time and controls the standby power supply to charge according to needs; and the information processing module performs numerical information fusion by using a double-model structure to obtain anesthetic gas control information. The invention further relates to an anaesthesia machine control method and an anaesthesia machine. According to the anesthesia machine using the system and the method, accurate anesthetic gas supply can be controlled for the individual user, meanwhile, uninterrupted power supply can be guaranteed, and smooth anesthesia treatment and safety of the user are guaranteed.

The utility model discloses a filtering device for an anaesthesia machine, and particularly relates to the technical field of anaesthesia machines, the filtering device comprises a filtering assembly, the filtering assembly is used for filtering gas in the anaesthesia machine, the filtering assembly comprises a gas inlet pipe and a gas outlet pipe, and the gas inlet pipe and the gas outlet pipe are combined to form a filtering pipe; the dismounting and mounting assembly is used for rapidly dismounting and mounting the air inlet pipe and the air outlet pipe, the dismounting and mounting assembly comprises a threaded pipe fixed to one end of the air inlet pipe and an internal thread formed in the air outlet pipe, and the internal thread and the threaded pipe are fixed in a threaded connection mode; according to the utility model, through the arrangement of the dismounting assembly, the effect of quickly mounting the air outlet pipe and the air inlet pipe can be realized, so that the problems that the mounting steps are relatively tedious and the filter is difficult to quickly mount when the existing filter is mounted are solved, the filter is more time-saving and labor-saving in the mounting process, and the mounting efficiency of the filter is improved. Therefore, the mounting efficiency of the filtering device can be greatly improved, and the filtering device can be conveniently and quickly used.

The present invention relates to a mixing device (1) for a respirator or anaesthesia machine for mixing at least two respiratory-gas components, comprising a flow channel which has a first flow-channel portion (4) with at least two inlets (2, 3) for introducing the respiratory-gas components and a second flow-channel portion (5) with an outlet (7) for discharging a respiratory-gas stream comprising the respiratory-gas components. The mixing device (1) is distinguished in that a cross section of the first flow-channel portion (4) at least partially decreases downstream towards a transition (6) from the first to the second flow-channel portion (4, 5), the first and the second flow-channel portion (4, 5) are inclined relative to one another and, in the region of the transition (6), the first flow-channel portion (4) opens out into the second flow-channel portion (5) in such a way that a turbulent flow (12) of the respiratory-gas stream is at least partially formed around a longitudinal centre axis (8) in the second flow-channel portion (5) and flows at least partially in a spiral towards the outlet (7). The invention also relates to a respirator or anaesthesia machine comprising such a mixing device (1) and to a method for producing such a mixing device (1).

The invention belongs to the technical field of anaesthesia machines, and relates to an automatic target control method for the concentration of end-expiratory anesthetic gas of an anaesthesia machine and the anaesthesia machine. Calculating the deviation between the concentration of the end-expiratory anesthetic gas exhaled in the current respiratory cycle and a gas concentration set value; when the deviation and / or the change amount of the end-expiratory anesthetic gas concentration is larger than the threshold value, the flow of fresh gas used for flushing the anesthetic respiratory system is increased, and the anesthetic gas concentration of the fresh gas is adjusted till the deviation and the change amount of the end-expiratory anesthetic gas concentration are smaller than the threshold value; calculating predicted values of the concentration of the end-expiratory anesthetic gas in a plurality of future respiratory cycles; an anesthetic gas concentration optimization model is constructed and solved to obtain the optimal inhaled anesthetic gas concentration variation of each future respiratory cycle, so that the target flow of the fresh gas of each future respiratory cycle is calculated to control the conveying parameters of the fresh gas, and the final-expiratory anesthetic gas concentration is taken as an adjusting target to adjust the flow rate of the fresh gas. And the concentration of the end-expiratory anesthetic gas is effectively controlled through real-time feedback, dynamic prediction and adjustment.

The invention belongs to the field of medical equipment, and provides a manual operation and control switching device for an anaesthesia machine, which comprises a mounting seat arranged on a rack of the anaesthesia machine; the shifting rod mechanism is arranged on the mounting seat and can rotate between a first rotating position and a second rotating position relative to the mounting seat so as to trigger and control the anaesthesia machine to be switched between a manual state and a mechanical control state; the swing rod assembly is rotationally connected with the shifting rod mechanism and the anaesthesia machine, and the shifting rod mechanism and the swing rod assembly can rotate synchronously; when the driving lever mechanism is located at a middle position between the first rotating position and the second rotating position, between the first rotating position and the middle position and between the second rotating position and the middle position, the driving lever mechanism is driven to rotate. The swing rod assembly drives the shifting rod mechanism to rotate towards the first rotating position or the second rotating position, rotate towards the first rotating position and rotate towards the second rotating position. The invention further provides an anaesthesia machine. The anaesthesia machine is only in a manual state or a mechanical control state and does not have an intermediate state.

The utility model relates to the technical field of water vapor filtration of an anaesthesia machine, in particular to a water vapor filtering device suitable for the anaesthesia machine, and solves the problems that the cooling time, the heat dissipation area and the cooling efficiency are influenced by a relatively short air flowing channel in the prior art, so that the filtering effect is relatively poor. A water vapor filtering device suitable for an anaesthesia machine comprises an upper tank body, an air inlet pipe is arranged on one side of the upper tank body, a separation sleeve is fixedly connected into the upper tank body, the top of the separation sleeve is communicated with an air outlet pipe, the air outlet pipe is communicated with the surface of the upper tank body, and a plurality of water absorption objects are fixedly connected into the air outlet pipe. The bottom of the upper tank body is in threaded connection with a lower tank body, the surfaces of the upper tank body and the lower tank body are fixedly connected with protruding rings, and a mounting mechanism is arranged between the two protruding rings. According to the utility model, the water vapor has longer cooling time and heat dissipation area, the cooling efficiency is improved, and a better dewatering and filtering effect can be ensured.

The invention relates to a mixing device (1) for a breathing or anaesthesia machine for mixing at least two breathing gas components, having a flow channel with at least two inlets (2, 3) for introducing the breathing gas components, 3) and a second flow channel section (5) with an outlet (7) for discharging a flow of breathing gas having a breathing gas component. The mixing device (1) is characterized in that the cross-section of the first flow channel section (4) decreases downstream at least in sections in the direction of the transition (6) from the first to the second flow channel section (4, 5), the first and second flow channel sections (4, 5) are inclined to each other, and the first flow channel section (4) opens into the second flow channel section (5) in the region of the transition (6) in such a way that the first flow channel section (4) opens into the second flow channel section (5). In this way, a vortex of the breathing gas flow around the longitudinal central axis (8) is formed at least partially in the second flow channel section (5), said vortex flowing helically in the direction of the outlet (7) at least in sections. The invention further relates to a breathing or anaesthesia machine having such a mixing device (1) and to a method for producing such a mixing device (1).

The invention relates to the technical field of medical instruments, in particular to a hand-operated machine-controlled switching valve device and an anaesthesia machine, and the hand-operated machine-controlled switching valve device comprises a valve seat (1) which is provided with a soda lime tank connector (16), an air outlet connector (2), a machine-controlled ventilation inlet (11), a hand-operated ventilation inlet (12) and a valve port (14); the valve rod (4) is arranged in the valve seat (1); the sealing gasket (10) is installed on the valve rod (4) and used for being in sealing fit with the first valve port side or the second valve port side of the valve port (14) when the valve rod (4) moves to the first position or the second position; and a driving source; under the action of a driving source, the valve rod (4) moves to a first position, so that the sealing gasket (10) closes the manual ventilation inlet (12) and opens the mechanical control ventilation inlet (11); and under the action of a driving source, the valve rod (4) returns to the second position from the first position, so that the sealing gasket (10) closes the mechanical control ventilation inlet (11) and opens the manual ventilation inlet (12), and automatic switching of ventilation channels is achieved.

The utility model discloses a PEEP valve for a breathing machine and an anaesthesia machine. The PEEP valve comprises a thrust driving assembly and an air path assembly. The thrust driving assembly comprises an upper cover, a second printed circuit board, a coil support, a coil, an inner magnet yoke, an outer magnet yoke, a permanent magnet, a first printed circuit board, a flexible circuit board and a push rod. The inner magnet yoke and the permanent magnet are located in the outer magnet yoke and are coaxial; the coil is wound on the outer ring of the coil bracket; the push rod is fixed in the center of the coil bracket; the coil support is located on the inner magnet yoke, the push rod penetrates through the permanent magnet and a center hole of the inner magnet yoke, the two ends of the flexible circuit board are connected with the first printed circuit board and the second printed circuit board respectively, the first printed circuit board is fixed to the coil support, and the second printed circuit board is fixedly connected to the upper cover. The top of the push rod penetrates through the center through hole of the upper cover and is in clearance fit with the center through hole. The permanent magnet synchronous motor is high in efficiency, long in service life, strong in manufacturability and high in thrust linearity.

An anaesthetic gas capture device housing two reusable canisters that safely capture volatile agents from the exhaust of an anaesthetic machine while maintaining a safe connection to a hospital AGSS and enabling the anaesthetic machine to continue to work in an active AGSS mode, without alteration, the device comprises or can be connected to suction means for drawing gas exhausted from a machine to the device, the suction means operates upstream of the capture canisters, the device is configured so that the suction means pushes gas through the canisters under positive pressure in series and agent extraction occurs under positive pressure, the device is pneumatically decoupled from the anaesthetic machine so that the device cannot apply vacuum pressure to the anaesthetic machine.

The invention provides an anaesthesia evaporator and an anaesthesia machine, and the anaesthesia evaporator comprises an evaporator disc which is driven by an external force to rotate around the center of the evaporator disc; the N anesthetic evaporation containers are fixed to the evaporator disc around the center of the evaporator disc, anesthetics stored in the anesthetic evaporation containers are different in type, and N is a natural number larger than or equal to 2; by rotating the evaporator disc, the anesthetic evaporation containers to be used are driven to rotate to the same designated position, and the anesthetic evaporation containers at the designated position face a patient; when the to-be-used anesthetic evaporation container rotates to a designated position, the to-be-used anesthetic evaporation container is powered on, and the idle state is switched into the using state; two openings are formed in a shell of the evaporator disc, and one opening is communicated with the anesthetic evaporation container in a use state and is connected to a respiratory system of a patient through a respiratory loop; and the other opening is communicated with the anesthetic evaporation container in an idle state, leads to the outside and is provided with a sealing cover for updating anesthetic.

The invention discloses an intelligent laboratory mouse tracheal intubation operation system and method based on mechanical arm linkage, and relates to the technical field of technical biomedices.The system comprises a respiratory anaesthesia machine, an anesthesia maintaining box and a mechanical arm, the anesthesia maintaining box is connected with the respiratory anaesthesia machine, and a mechanical arm moving track is arranged on the upper portion in the anesthesia maintaining box; a drawable laboratory mouse device plate for fixing a laboratory mouse is arranged in the anesthesia maintaining box; an operation port of the mechanical arm is provided with a tracheal catheter release device which is used for clamping a tracheal catheter to move to the deep layer in the laryngeal cavity after the oral cavity of the experimental mouse is pried open, and inserting a tracheal cannula into the trachea of the experimental mouse; an image acquisition module for acquiring in-vitro continuous images and in-oral continuous images in real time is arranged beside the tracheal catheter; an image processing module is arranged in the mechanical arm and used for analyzing continuous images in the oral cavity, recognizing and marking the trachea and calculating the time difference of opening and closing of a trachea pipeline window. On the basis of mechanical arm linkage, full-automatic implementation of the tracheal intubation operation in narrow and small lacuna is achieved.

The utility model provides a one-way valve and an anaesthesia machine thereof, and belongs to the technical field of medical instruments, the one-way valve and the anaesthesia machine comprise a connecting assembly, a first connecting seat and a second connecting seat, the first connecting seat is provided with a first channel, and the second connecting seat is provided with a second channel; the adjusting assembly is located at the joint of the first channel and the second channel and used for communicating or blocking the first channel and the second channel; wherein the adjusting assembly comprises a fixing seat, an adjusting part and an elastic piece, a first adjusting channel is formed in the fixing seat in a penetrating mode, the first adjusting channel is used for communicating the first channel with the second channel, the adjusting part is movably arranged in the first adjusting channel, and the elastic piece is connected between the adjusting part and the fixing seat; the adjusting part is used for opening or closing the first adjusting channel under the action of the first connecting base and the elastic piece. The one-way valve belongs to a mechanical trigger one-way valve, and is fast in trigger response and low in failure rate.

The invention provides an anaesthesia machine and a state recognition method for driving gas of the anaesthesia machine. The anaesthesia machine comprises a breathing loop used for being connected with a patient, a driving gas branch used for providing driving gas for a bellow-free gas driving branch, and the bellow-free gas driving branch with a bellow-free gas driver. The bellow-free gas driver is used for storing driving gas in the inspiration stage and storing gas of the breathing circuit in the expiration stage. The anaesthesia machine obtains the first gas amount flowing into the breathing circuit through the bellows-free gas driver in the inspiration stage and the second gas amount of gas entering the bellows-free gas driver in the breathing circuit in the expiration stage; and determining whether the state of the current driving gas is that the driving gas enters the breathing loop according to the first gas quantity and the second gas quantity. Therefore, a user can know the current state of the driving gas, and the risk that the anesthetic concentration of a breathing circuit is too low is reduced.

The invention relates to the technical field of intelligent medical treatment, in particular to an artificial intelligence respiratory system based on an anaesthesia machine, which comprises a data acquisition and processing module, a database establishment module, a stress analysis module and an intelligent analysis module, the data acquisition and processing module is mainly used for acquiring and preprocessing data; the database establishing module is used for establishing a historical database according to the ventilation parameters, the physiological parameters and the individual parameters; the stress analysis module is used for establishing a lung geometric model and generating a visual map of stress deformation of a lung injury area through finite element analysis; and the intelligent analysis module is used for performing model training by utilizing a machine learning algorithm and establishing a breathing parameter optimization model and a lung injury risk assessment model. According to the method, the physiological parameters and the breathing characteristics of the patient are individually integrated in real time in the operation, the dynamic multi-dimensional database is constructed, and the breathing parameters are automatically adjusted to balance the pressure and capacity distribution in the lung, so that the incidence rate of lung injury is reduced.

A modular system is provided for the unbroken acquisition of data from an entire patient stay in critical care, emergency areas and theatres. The system including a portable ventilator module in combination with an anaesthesia module. The portable ventilator module is detachably attachable to the anaesthesia module, wherein the portable ventilator module can provide life-sustaining ventilation support to a patient in critical care and wherein the portable ventilator module can dock with the anaesthesia module to provide anaesthesia during operations in theatre so that a machine change from an intensive care unit (ICU) ventilator to a separate anaesthesia machine and back again is not required, thereby avoiding data loss. The portable ventilator module comprises a turbine and, when the anaesthesia module is not connected, air is drawn in from atmosphere by the action of the ventilator module turbine. A docking port is provided to connect the ventilator module to the anaesthesia module via a single location. A connection is provided within the docking port to connect recirculated gas from the anaesthesia module to the air intake input in the ventilator module.

The utility model relates to the field of anaesthesia machines, and discloses an anaesthesia machine threaded tube for aerosol inhalation, the anaesthesia machine threaded tube comprises a connector and two fixing rings, the bottom end of the connector is communicated with an exhalation tube and an inhalation tube, the exhalation tube and the inhalation tube are symmetrically distributed with the connector as the axis, and fixing ropes are fixedly mounted at the bottom ends of the fixing rings. The surface of the fixing rope is rotationally connected with a plurality of supporting frames, the supporting frames are distributed in a circumferential array mode with the center of the fixing rope as the axis, and the tops of the two fixing rings and the bottom end of the connector are installed in a threaded mode; the fixing ring is mounted at the bottom end of the connector, the fixing rope is fixedly connected to the bottom end of the connector, the multiple supporting frames are rotatably mounted on the surface of the fixing rope, and the surfaces of the supporting frames are clamped to the inner walls of the exhalation pipe and the suction pipe, so that the inner walls of the exhalation pipe and the suction pipe are supported by means of the supporting frames; and the situation that the exhalation tube and the inhalation tube are extruded by external force to affect breathing of a patient is effectively prevented.

The utility model discloses a breathing anaesthetic mask for small animals, which relates to the field of anaesthetic devices for animal experiments and comprises a mask body. One end of the connecting part is connected with the mask body, the other end of the connecting part is connected with an anaesthesia machine pipeline, the mask body comprises a placing block, and the bottom of the placing block is a square block; the anesthesia cavity penetrates through the placing block and is connected with the connecting part; the fixing device is arranged at one end, far away from the connecting part, of the mask main body and can be used for fixing a small animal in the anesthesia cavity; the breathing anaesthetic mask for the small animal can effectively fix the head of the small animal and prevent the mask from falling off, meanwhile, the neck of the small animal is fully exposed, neck operation is facilitated, and the breathing anaesthetic mask has the advantages of being simple in structure, high in applicability, convenient to connect, low in cost and the like.

The invention provides a method for increasing the rising speed of oxygen concentration and an anaesthesia machine, and the method comprises the following steps: when the anaesthesia machine starts to use, washing a loop with pure oxygen, and after the oxygen concentration rises to a target value, replacing the pure oxygen with fresh gas with normal oxygen concentration. The anesthesia machine has the advantages that the oxygen concentration of the ventilation loop can be rapidly increased when the anesthesia machine starts to be used, and the oxygen supply concentration can be rapidly recovered after the oxygen concentration reaches a target value.

The invention relates to the technical field of medical instruments, in particular to an exhalation valve assembly for an anaesthesia machine and the anaesthesia machine. The exhalation valve assembly for the anesthesia machine comprises an exhalation valve shell (1), a driving gas device (5), an exhalation valve (7), a waste gas connecting pipe (12) and a plurality of driving gas connecting pipes (9 and 10), a driving gas pipeline (3) is arranged in the exhalation valve shell (1), and the exhalation valve shell (1) is provided with a second driving gas connector (6), a third driving gas connector (15), an exhalation valve mounting port (16), a waste gas pipeline connector (11), a loop connector (17) and other connectors. Therefore, the communication with an exhalation valve (7), a waste gas pipeline and an anaesthesia machine loop is realized. The exhalation valve (7) and the safety valve assembly (14) are integrated, connecting and sealing points are reduced, and the leakage risk is reduced. The exhalation valve assembly is compact in structure, uniform in connector, capable of supporting modular assembly and convenient to maintain. The device has the advantages of high integration, high sealing performance, low cost, high reliability and the like, and is suitable for modern anesthesia systems.

The invention discloses a headrest type suspended anesthesia device for the anesthesiology department, and relates to the technical field of medical instruments. Comprising a box body, a mounting strip is fixedly mounted at the rear end of the box body, a box door is slidably mounted at the front end of the box body, a mounting frame is slidably mounted on the inner wall of the box body, a partition plate is fixedly mounted on the inner wall of the mounting frame, an anaesthesia machine is mounted on the top of the partition plate, and a headrest assembly is arranged on the inner wall of the partition plate and comprises a fixing plate; the bottom of the adjusting plate is concavely provided with a T-shaped groove, the inner wall of the T-shaped groove is slidably sleeved with a T-shaped sliding block, the bottom of the T-shaped sliding block is fixedly provided with a pillow plate, the surface of the pillow plate is concavely provided with a headrest groove, the side end of the headrest groove is concavely provided with a groove, the inner wall of the groove is slidably sleeved with a baffle, the end of the baffle is fixedly provided with a sliding block, and the inner wall of the groove is concavely provided with a sliding groove. And the pillow plate can be stored in the box body after being used, so that the occupied area is effectively reduced, and meanwhile, the subsequent cleaning and disinfection of the operating room are also facilitated.

A modular system is provided for the unbroken acquisition of data from an entire patient stay in critical care, emergency areas and theatres. The system including a portable ventilator module in combination with an anaesthesia module. The portable ventilator module is detachably attachable to the anaesthesia module, wherein the portable ventilator module can provide life-sustaining ventilation support to a patient in critical care and wherein the portable ventilator module can dock with the anaesthesia module to provide anaesthesia during operations in theatre so that a machine change from an intensive care unit (ICU) ventilator to a separate anaesthesia machine and back again is not required, thereby avoiding data loss. The portable ventilator module comprises a turbine and, when the anaesthesia module is not connected, air is drawn in from atmosphere by the action of the ventilator module turbine. A docking port is provided to connect the ventilator module to the anaesthesia module via a single location. A connection is provided within the docking port to connect recirculated gas from the anaesthesia module to the air intake input in the ventilator module.

The invention belongs to the technical field of medical instruments, and particularly relates to a knob protection mechanism and an anaesthesia machine. The knob protection mechanism comprises a housing, a sealing plate, a transparent warning plate and an elastic piece, the housing is provided with a first knob receding groove and a first scale perspective window, and the sealing plate is assembled in the housing in a front-back sliding mode; the second knob abdicating groove can control the exposed length of the knob, and the exposed length of the knob is not enough to hold in a normal state so as to prevent misoperation. The rear end of the transparent warning plate is hinged to the housing, the front end of the transparent warning plate is slidably hinged to the sealing plate, the transparent warning plate synchronously overturns along with the sealing plate during adjustment to shield the first scale perspective window, and striking warning is formed through orange-yellow color. The mechanism is further provided with a limiting sliding groove, a limiting protrusion, a shifting block and other structures, the operation process is simplified, one-hand operation is adapted, and disassembly, assembly and maintenance are convenient. The respiration anesthesia machine comprising the mechanism can improve the safety and convenience of standby oxygen regulation, is suitable for various medical scenes, and provides reliable guarantee for regulation and control of surgical anesthesia oxygen supply.

The invention discloses a tidal volume measuring system for an anaesthesia machine pipeline, and the tidal volume measuring system comprises a near-end detection assembly, a differential pressure sensor, a differential amplifier and a microprocessor, the near-end detection assembly comprises an external flow sensor, and the external flow sensor is arranged on a tracheal catheter; the external flow sensor is arranged in the tracheal catheter and used for converting gas flow energy in the tracheal catheter into the pressure difference between the pressure high end and the pressure low end of the external flow sensor, and the pressure difference sensor is used for converting the pressure difference between the pressure high end and the pressure low end into a pressure difference electric signal. And the microprocessor is used for obtaining the gas flow in the tracheal catheter according to the electric signal output by the differential amplifier. The external flow sensor is arranged in the tracheal catheter, the flow energy of the gas in the tracheal catheter is directly detected, the actual tidal volume of a patient can be reflected more truly, interference caused by the volume change of a pipeline is avoided, and therefore the measurement error is remarkably reduced, and the gas flow measurement accuracy is improved.

The anesthesia machine comprises a driving gas branch, a fresh gas branch and a breathing loop, the fresh gas branch is used for feeding fresh gas with anesthetic gas into the breathing loop, and the driving gas branch is used for pushing the fresh gas in the breathing loop to a patient. The driving gas branch comprises a fan assembly, the fan assembly comprises a machine shell, a fan and a first heat dissipation piece, the machine shell comprises a first inner cavity, a first air inlet communicated with the first inner cavity and a first air outlet communicated with the first inner cavity, and the fan is arranged in the first inner cavity and used for driving air to enter the first inner cavity from the first air inlet and be blown out from the first air outlet; the fan comprises a volute, an impeller and a motor, the impeller is rotatably installed in the volute, the motor is installed in the volute and connected with the impeller, the surface, opposite to the first air inlet, of the motor is a projection plane, and the orthographic projection of the first air inlet and the surface of the motor are at least partially overlapped.

The present application relates to a kind of anaesthesia machine control system, the system specifically includes: acquisition module, information interaction module, information processing module, gas monitoring control module, backup power supply, power monitoring module and display screen;Power monitoring module is used to monitor the state of external power supply in real time, when external power supply appears exception, immediately switch to backup power supply, simultaneously, the power monitoring module also monitors the state of backup power supply in real time, controls backup power supply to charge according to need;Information processing module utilizes double model structure to carry out numerical information fusion, obtains anaesthetic gas control information.The present application also relates to a kind of anaesthesia machine control method and anaesthesia machine.Anesthesia machine using the system and method of the present application, not only can guarantee the accurate anaesthetic gas supply for individual control to user, simultaneously, can guarantee uninterrupted power supply, guarantees the smooth of anaesthesia processing and the safety of user.

An anaesthesia machine integrates the presence and state of charge of another medical device, such as a video laryngoscope, into operation. The anaesthesia machine communicates with the medical device to determine the presence and state of charge and present this information to a user as part of an examination procedure. A medical device mount is associated with the anesthesia machine to receive and charge the medical device. The medical device mount may include both a medical device charging mount and a battery charging mount that receives and charges a replacement battery. The medical device mount may communicate with the anesthesia machine to provide the charging and presence state of the medical device. During the examination procedure of the anaesthesia machine, presence and battery status information may be presented to the user, or the user may be prompted to manually enter this information into the anaesthesia machine.

The utility model provides a locking mechanism and an anaesthesia machine, the locking mechanism comprises a first locking assembly and a second locking assembly, the first locking assembly comprises a locking piece and a first sensor; the locking piece is provided with a first locking structure; in the locking state, the first locking structure can be locked with a second locking structure of the anaesthesia machine in a matched mode, the locking piece is located at the first sensing position, and the first sensor outputs a first sensing signal. In an unlocking state, the first locking structure can be separated from the second locking structure, the locking piece is located at a second sensing position, and the first sensor outputs a second sensing signal; the second locking assembly comprises an elastic interlocking assembly and a second sensor; the elastic interlocking assembly can move from an unlocking position to an interlocking position after being driven; in the interlocking position, the elastic interlocking assembly is located at a third sensing position, and the second sensor outputs a third sensing signal. By means of double locking of the locking mechanism, potential safety hazards caused by mistaken use of the evaporator can be avoided.

The invention discloses a precision detection method for a laughing air electronic control flowmeter in an anaesthesia machine. The method comprises the following steps: connecting a gas flow detection device with a flow control system; carrying out precision calibration on the gas flow detection device; oxygen enters through the oxygen inlet and is introduced into the atmosphere, air enters through the laughing gas inlet, the air inlet is closed, and a first flow value recorded by the gas flow detection device is obtained; laughing conversion coefficients at different preset flow values are calculated respectively; determining a verification conversion coefficient; oxygen with a fixed flow value enters through the oxygen inlet and flows through the gas flow detection device, air enters through the laughing gas inlet, the air inlet is closed, and a second flow value displayed by the laughing gas and air electric control flowmeter is obtained; determining a verification flow value range; if the third flow value displayed by the gas flow detection device is within the verification flow value range, it is determined that the precision of the laughing air electric control flowmeter meets the standard. Air can be used for replacing laughing gas for testing.

The invention discloses a pipeline structure of medical ventilation equipment, an anaesthesia machine and a breathing machine, and a main pipeline and / or a control end branch are / is provided with a silencing pipeline. When sound waves are transmitted in the silencing pipeline, the main pipeline and / or the control end branch, interaction is generated, the silencing effect is achieved, and vibration and noise of the pipeline structure are reduced.