41 results about "Anaesthetic gas" patented technology

A non-invasive method of treating cerebral ischemia, involving the use of non-inhaled, intra-nasally delivered carbon dioxide (CO2), alone or in combination with other gases to augment cerebral perfusion and improve outcome following a stroke is provided. A vasodilator gas is delivered intranasally, alone or in combination with a second gas, for prolonged periods of time without systemic absorption. The second gas may be selected from NO, hydrogen, xenon, anesthetic gases, oxygen, nitrogen, nitrous oxide, carbon monoxide, or air. The treatment selectively increases cerebral perfusion and provides neuroprotection in the treatment of cerebral ischemia.

The invention discloses a method for measuring the tidal volume of an anaesthetic machine, which can effectively improve the measurement accuracy of medical anaesthetic machine in measuring the tidal volume breathed in or out by patients. The method comprises the following steps: (1) the average value measured by a flow sensor at the prior breathing-out or breathing-in stage is calculated; (2) the flow value of patients at the current breathing-out or breathing-in stage are collected; (3) the flow value of patients at the current breathing-out or breathing-in stage deducts the average value measured by the flow sensor at the prior breathing-out or breathing-in stage and the integration are accumulated in the whole breathing-out or breathing-in stage, thereby obtaining breathing-out or breathing-in tidal volume value; all factors interfering the flow measurement are compensated in real time so as to prevent the measurement results from being affected by the component, the pressure, the temperature, atmospheric pressure and environmental temperature thus achieving the purpose of correctly measuring the breathing-out or breathing-in tidal volume, greatly improving the controllability of anaesthetic effect and realizing the purpose of the method.

The patent application discloses a gas anesthesia system which comprises an anesthesia gas volatilization pot, wherein the anesthesia gas volatilization pot is connected to an anesthetic input pipe, and the end of the anesthetic input pipe stretching into the anesthesia gas volatilization pot is connected to a spraying nozzle; the bottom end of the anesthesia gas volatilization pot is in contact connection to an electronic balance; multiple heaters are disposed on the contact face between the electronic balance and the anesthesia gas volatilization pot; a temperature sensor and an in-pot pressure sensor are disposed in the anesthesia gas volatilization pot; a pressure sensor outside the pot and a flow rate sensor are disposed at a communicating position between the anesthesia gas volatilization pot and a breathing circuit; a micro controller and a display screen connected to the micro controller are disposed in a safety monitoring system; and the electronic balance, the heaters, the pressure sensor and the flow rate sensor are connected to a micro controller.

The invention relates to equipment for a small laboratory animal designed to keep it under volatile anesthesia then to insert it into an imaging system for medical imaging investigations. It makes sure the vigilant animal has pre-anesthesia by means of a direct induction device of anesthetizing gas, its anesthesia prolonged by means of the usable device for keeping it in the open or closed position. This device makes direct access possible by the blood or respiratory pathway. The temperature of the animal is controlled and modulated by means of a nonmagnetic heat exchanger. The invention takes into account the safety of the users in regard to their exposure to halogens thanks to the double sealing connection system and thanks to the induction device that does not impregnate the coat of the animal that they have to handle.

The present invention relates to an apparatus and method for maintaining patient temperature during an anaesthetic procedure. Patients, particularly small patients, can lose body temperature when undergoing surgery or other procedures where they are anaesthetised. The process of breathing the cool anaesthetic gas contributes to the temperature loss of the patient. An anaesthetic apparatus of the present invention is arranged to warm the gas being provided for the patient to breathe, to facilitate maintaining body temperature. An inspired limb of an anaesthetic circuit comprises tubing with a heating conductor for heating the inspired gas.

The present invention provides improved anesthesia delivery systems that consistently and reliably deliver anesthesia gas to multiple gas outlets. The systems are particularly useful for anesthetizing multiple mammals and living specimens to be imaged by a low-light level imaging system. The anesthesia delivery systems are suitable for use with conventional oxygen sources, and convert the high pressures associated with a conventional oxygen source to lower pressures suitable for use with small mammals and suitable for combination with an anesthesia gas at low flow rates. The systems include an anesthesia gas source that combines anesthesia gas with the oxygen. The combination of anesthesia gas and oxygen is supplied to one or more multiple outlets.

A nose mask for applying an anesthesia gas to a laboratory animal in a casing means includes an anesthesia tube, an outer wall which is disposed outside the anesthesia tube to form a space therebetween and an anesthesia recovery system having an anesthesia recovery port open to the space. The anesthesia tube includes an anesthesia supply section which opens to an wall of the anesthesia tube so that the anesthesia is applied to the laboratory animal by inserting the nose of the laboratory animal, an anesthesia introducing section for introducing the anesthesia gas to the anesthesia tube, and an anesthesia discharging section for discharging the anesthesia gas from the anesthesia tube.

A device for measuring oxygen uptake and carbon dioxide production by a respiring subject based on the use of absorption spectroscopy. An absorption spectrometer using cavity enhanced absorption spectroscopy at 763 nm to measure oxygen concentration and direct absorption or wavelength modulation spectroscopy at 2.0035 μm for carbon dioxide concentration is incorporated into a breathing tube in proximity to the respiring subject. This provides measurements of oxygen and carbon dioxide concentration with a good temporal resolution which can be combined with measurements of flow rate as a function of time to obtain oxygen uptake and carbon dioxide production on a breath-by-breath basis. The device can also measure the concentration of water vapor and of anaesthetic gases in exhaled breath.

The invention relates to a testing device of the sendout of an anaesthetic gas, two collecting bags are arranged in a water tank, wherein, one collecting bag is communicated with p ends of electromagnetic valves 1, 3, and the other collecting bag is communicated with p ends of electromagnetic valves 2, 4. The R end of the electromagnetic valve 1 is communicated with the A end of the electromagnetic valve 2, and the R end of the electromagnetic valve 4 is communicated with the A end of the electromagnetic valve 3. The A end of the electromagnetic valve 1 is communicated with a common gas outlet of an anaesthetic machine, and the A end of the electromagnetic valve 4 is communicated with a pressure gauge, a regulating valve and a flowmeter to a concentration testing instrument. A negative pressure pump of the closed top end of the water tank establishes stable air pressure of -10Kpa in the water tank. By the precision measurement of three essentials of gas volume, transfer time and gas concentration, an evaporation volume of the anaesthetic gas in each stage in each unit time can be obtained. By the comparison, the increment of the sendout of the anaesthetic gas is proved whether exceeds 20 percent during and after rapid oxygen supply or when the air pressure waves -10KPa.

The invention discloses a small animal respiratory anaesthetic mask which comprises an outer cover, a gas inlet pipe, a gas return pipe and an anaesthetic gas source. A manual radial compression device is arranged on the inner side of the outer cover and comprises at least two radial pressing plates which are evenly distributed on the inner side wall of the outer cover and are spaced, a guide rod penetrating through a through hole in the side wall of the outer cover is arranged on the back face of each radial press plate, and a spring supported on the outer surface of the outer cover is arranged at the tail end of each guide rod in a sleeving mode. The multiple radial pressing plates are adopted in the small animal respiratory anaesthetic mask, the pressing plates can be controlled to move inwards in the radial direction through swing rods, and traumas caused by the anaesthetic work cannot be brought to small hamsters. By means of the mask and an inlet in the mask, the size of the inlet can be automatically adjusted according to the body type of small animals to ensure that anaesthetic gas is not leaked at all, and the risk that clinical workers inhale the anaesthetic gas is avoided. The small animal respiratory anaesthetic mask is reasonable in structural design, good in use effect and suitable for application and popularization in the small animal anaesthetic field.

A filter system for a building, in particular a hospital, having an exhaust air duct, by means of which a gas mixture is conducted out of the building, and a filter device, which is assigned to the exhaust air duct and is configured to filter at least partially anaesthetic gases out of the gas mixture flowing through the filter device is provided. A filter device for installation in a filter system is also provided.

The invention relates to the field of anaesthesia auxiliary equipment, in particular to a closed anaesthesia mask capable of preventing anaesthesia gas from escaping. The closed anaesthesia mask comprises a mask body, a vent pipe and an air suction pipe, both the vent pipe and the air suction pipe are connected to the mask body through a breathing valve, and the breathing valve can automatically control the on-off of the vent pipe and the air suction pipe and the inner cavity of the mask body along with respiration of a patient; the breathing valve comprises a rigid pipe with one closed end and one opened end and a light foam ball arranged in the rigid pipe in a sliding mode; and the inner cavity of the rigid pipe is divided into a first cavity part and a second cavity part by the light foam ball, the first cavity part and the second cavity part are connected through a bypass pipe, and both a connecting port of the vent pipe and the second cavity part and a connecting port of the air suction pipe and the second cavity part can be blocked by the light foam ball sliding to the corresponding position. The closed anaesthesia mask can avoid various problems caused by the escape of anesthesia gas in the anesthesia process, and is simple in structure, easy to realize and convenient to control.

The invention relates to the technical field of inhalation anaesthetic equipment, and discloses an inhalation anaesthetic mask which comprises a shell I. The right side wall of the shell I is fixedlyconnected with an air intake pipe, the left side wall of the shell I is fixedly connected with a pipeline I, the pipeline I is fixedly connected with a mask body I, a sealing mechanism is arranged onthe bottom end surface of the mask body I, a condensed water collecting device is further arranged in the mask body I, a reminder device and an anesthetic return flow device are arranged between the mask body I and the shell I, and a mixing device is arranged in the shell I. By reducing the contact area between the bottom surface of a sealing ring and the face of a patient, and when the tension provided by an elastic band is constant, the pressure between the sealing ring and the face of the patient is increased, the risk of anesthetic gas leakage caused by non tight fitting of the mask and the face of the patient due to the face deformation of the hare-lip patient is reduced, the sealing between the mask body I and the face of the patient is enhanced, the anesthetic gas leakage is effectively reduced, and the condition that a surgery is affected caused by the fact that the depth of anesthesia is affected due to insufficient anesthesia dose due to the anesthetic gas leakage is avoided.

The invention relates to the technical field of medical equipment, and particularly to an integrated gas passage board and a gas processing device with same. The integrated gas passage board comprisesthe components of a main board body which is provided with a gas outlet and at least one gas inlet; a gas current passage which is embedded into the main board body and have two ends that are respectively communicated with the gas inlet and the gas outlet; and at least one monitoring interface which is arranged on the main board body and matches a gas detecting module, wherein the monitoring interface is communicated with the gas inlet and the gas outlet through the gas passage. According to the integrated gas passage board, the gas current passage and a plurality of interfaces are fixedly arranged on the main board body of the gas passage board, thereby facilitating simultaneous assembling of an gas monitoring module and other gas monitoring medical modules, simplifying the gas passage structure, greatly reducing integral size of the product, realizing convenient operation and saving a large amount of manpower assembling cost.

The invention discloses an anesthetic dosage calculation method for anesthetics. The system comprises a control center, wherein the control center internally comprises a calculation module, a recording module and a query module; the front end of the control center is in network connection with a monitoring module; the front end of the control center is further connected with an input module; the rear side of the control center is connected with a display module. The anesthetic dosage calculation method disclosed by the invention has the beneficial effects that the dosage of gaseous anesthetics in the whole anesthesia process can be accurately calculated, errors caused by manual calculation are avoided, the accuracy and precision of liquid anesthetic dosage calculation results are effectively improved, the anesthesia gas concentration and mixed gas flow are obtained, and the dosage of gaseous anesthetics in the whole anesthesia process is obtained through calculation and summation; or the anesthesia gas concentration and mixed gas flow at each anesthesia phase can be measured, the dosage of gaseous anesthetics at each anesthesia phase is obtained through calculation, and then the dosage of gaseous anesthetics in the whole anesthesia process can be determined after summation.

The invention provides a narcotic dosage calculating method for an anesthetic machine. The narcotic dosage calculating method comprises steps of measuring the concentration of the narcotic gas and the mixed gas flow, and recoding the measuring time; calculating the dosage of the gas narcotic depending on the concentration of the narcotic gas, the mixed gas flow and the measuring time; and recognizing the type of the narcotic gas. A main controller can be used for calculating the dosage of a liquid narcotic corresponding to the dosage of the gas narcotic, based on a method for calculating a molar volume of gas. The narcotic dosage calculating method for an anesthetic machine is advantageous in that a large error caused by manual computation can be reduced.

The invention relates to an anaesthetic and oxygen respiration dual-purpose mask. The anaesthetic and oxygen respiration dual-purpose mask comprises an external mask body and an internal mask body, wherein the external mask body can be combined with the nasal part of a user in a sealed mode to form a first cavity, and corresponding to the nasal position, the external mask body is provided with an air inlet communicated with the first cavity for connecting an anaesthetic gas supply device or an oxygen supply device; the internal mask body is detachably connected to the inner side of the external mask body and can be combined with the mouth part of the user to form a second cavity, also, the internal mask body is provided with an air outlet, which is communicated with the second cavity and penetrates the external mask body for communicating with a gas recovery device generating negative pressure. According to the anaesthetic and oxygen respiration dual-purpose mask, the air inlet of the external mask body can provide anaesthetic gas or oxygen for the nasal part, and the air outlet of the internal mask body can effectively recover gas exhaled from the mouth part, and meanwhile, the external mask body can independently serve as a common mask for different applications.

The patent application discloses a gas anesthesia system which comprises an anesthesia gas volatilization pot, wherein the anesthesia gas volatilization pot is connected to an anesthetic input pipe, and the end of the anesthetic input pipe stretching into the anesthesia gas volatilization pot is connected to a spraying nozzle; the bottom end of the anesthesia gas volatilization pot is in contact connection to an electronic balance; multiple heaters are disposed on the contact face between the electronic balance and the anesthesia gas volatilization pot; a temperature sensor and an in-pot pressure sensor are disposed in the anesthesia gas volatilization pot; a pressure sensor outside the pot and a flow rate sensor are disposed at a communicating position between the anesthesia gas volatilization pot and a breathing circuit; a micro controller and a display screen connected to the micro controller are disposed in a safety monitoring system; and the electronic balance, the heaters, the pressure sensor and the flow rate sensor are connected to a micro controller.

A chamber for placement over a patient while allowing medical personnel to perform a medical procedure on the patient releasing virus, bacteria, or other contaminants, including a frame forming, supporting, and operatively integrated within a transparent body including a supported arch, an unsupported arch, and a top shield extending between the supported arch and the unsupported arch, wherein the body includes at least one access hole, and wherein the chamber surrounds the patient's head and the unsupported arch deforms around the patient's body in order to capture and exhaust any virus, bacteria, or other contaminants released by the patient during the medical procedure through negative pressure. A method of using the chamber of to perform a medical procedure on a patient. Methods of preventing exposure to waste anesthetic gas released from a patient after surgery, and preventing exposure to ultrafine particles and volatile organic compounds during 3D printer use.

The invention discloses a suction-type anesthesia device of the anesthesiology department. The device mainly comprises a fixing device and a working device, a placement groove is formed in the middleof the surface of the fixing device, and a protection pad is arranged at the front side of the top of the placement groove; sleeves are symmetrically arranged at the rear side of the upper end face ofthe fixing device, first fixing plates are arranged at the left and right sides of the fixing device respectively, and sliding rails are arranged on the first fixing plates; supporting lead screws are arranged above the first fixing plates at the two sides respectively, sliding blocks are arranged below the supporting lead screws, and second fixing plates are arranged at the upper ends of the supporting lead screws; movable blocks penetrate through the supporting lead screws, first sleeves sleeve the movable blocks, and a connection rod is horizontally fixed to one side face of the first sleeve; the connection rods at the two sides are movably connected through second sleeves, cylinder tubes are fixed to the interiors of the second sleeves, an inspiration cover is fixed to the lower portions of the cylinder tubes, a breathing cover is fixed to the lower portion of the inspiration cover, and the working device is located at the right side of the fixing device. In a word, it can be guaranteed that anesthesia gas can smoothly enter the body, the gas released externally is recycled, the applicability is high, the workload of medical personnel is reduced, and the working efficiency isimproved.

Emulsified inhalational anaesthetic is compounded with fatty emulsion and inhalational anaesthetic. Its application has less pollution to air, fast and controllable anaesthesia effect, no toxic side effect and less influence to respiratory loop and pulmonary function caused by residual anaesthetic gas. It may be also used in specific case, such as extracorporeal circulation. It can be separated from lung for regulating anaesthesia depth and its use requires only less muscle relaxing medicine, so that it is one safe and effective general anaesthetic.

The invention relates to a method for anaesthetizing animals before slaughter, by the anaesthetic action of gases or gas mixtures,method operating in “batch” mode in which the live animals, preferably put together in one or more cages, are placed in a lock chamber for treatment where the animals are brought into contact with anaesthetic gas, following a cycle comprising several steps characterized by different contents of anaesthetic gas, characterized in that at least one of the steps is carried out using gas recovered from the lock chamber and stored in at least one capacity (2, No. 1, No. 2 etc.) for temporary storage having a variable volume.

The invention discloses an inhalation type anaesthesia device. The inhalation type anaesthesia device comprises a box body, wherein a box door is rotatably connected to the outer side of the box bodythrough a hinge; trundles are arranged at the bottom of the box body; an oxygen tank is fixedly mounted on one side in the box body; a drug evaporation case is arranged at the top of the oxygen tank;an evaporating heater is arranged at the bottom of the drug evaporation case; the drug evaporation case and the evaporating heater are fixedly mounted in the box body; a gas mixing cylinder is fixedlymounted at the middle part of the box body; a piston is in sliding connection to the bottom of an inner cavity of the gas mixing cylinder; and an electric push rod is arranged at the bottom of the gas mixing cylinder. According to the inhalation type anaesthesia device disclosed by the invention, the bottom end of a rotating rod is in spiral sleeving combination with a cannula, and then during continuous lifting of the piston, a rotating disk and a lever at the top of the rotating rod are driven to rotate to sufficiently stir and mix oxygen and drug anesthetic gas inhaled in the gas mixing cylinder, so that favorable anaesthesia effects of the device can be guaranteed, and the anaesthesia performance of the device is improved.

The invention discloses an anesthesia device with a concentration adjusting function and an adjusting method thereof. The problems can be solved that on the premise that a filtering tank is additionally arranged for filtering anaesthetic gas, a patient can use an existing anesthesia device, the whole structure is complex, and a whole set of device occupies a large area; the inside of the existingdevice after use is inconvenient to clean, when the existing anesthesia device adjusts the concentration of the anaesthetic gas, the concentration of the anesthetic gas is adjusted by adopting a modethat an anesthesia induction box and the flowing speed of oxygen entering the anesthesia induction box cooperate with each other, the mode is extremely complex, and the concentration adjusting resultis quite inaccurate. The anesthesia device comprises a bracket, an evaporation tank and a concentration adjusting box, a medicine chamber is formed in the bracket, a liquid inlet is formed in the topof the medicine chamber, and a hydraulic telescoping pushing plate with the inner diameter adapting to that of the inside of the medicine chamber is installed in the medicine chamber; the hydraulic telescoping pushing plate is connected with a hydraulic pump at the bottom of the hydraulic telescoping pushing plate, and the evaporation tank is fixedly installed on the bracket.

The invention discloses an anaesthetic device for drug supply. The device comprises an anaesthetic tank, a dilution tank, an anaesthetic mask and a shell body, wherein a piston chamber is arranged inthe middle inside the shell body, two suction chambers are symmetrically arranged on two sides of the piston chamber inside the shell body, a first piston in coordination with the piston chamber is arranged in the piston chamber, two telescopic rods are symmetrically arranged on two sides of the bottom of the first piston, and a first hose is connected with the bottom of the first piston. By arrangement of an air inflation tank on top of the shell body and a fourth piston controlled by a switching column in the air inflation tank, the device replenishes fresh air outside during the use of anesthetic gas, the absorbed fresh air is squeezed into the internal discharge of the first hose and a second hose after exhausting the internal anesthesia of a piston groove, the remaining anesthesia inside the hoses is flushed, residual anesthetic gas in the pipes is avoided, the device is driven by a same motor, no extra driving force is required, energy is saved, and the use effect of the anesthetic device for drug supply is improved.

The invention relates to the field of medical apparatus and instruments, and especially relates to a gas anesthesia device that can adjust anesthetic concentrations according to needs and reduce the pollution of anesthetic waste gas. An anesthetic gas tank is provided with a first trachea which matches a first valve and a first flowmeter; an oxygen tank is provided with a second trachea which matches a second valve and a second flowmeter; the first trachea and the second trachea communicate with a third trachea that communicates with a mixing mechanism; and an anaesthetic mask respectively communicate with the mixing mechanism and a waste gas recycling device. Through the gas anesthesia device, the anesthetic gas tank and the oxygen tank respectively input anesthetic gas and oxygen to themixing mechanism so as to mix into the anesthetic gas with an appropriate concentration, and then the anesthetic gas can be conveyed to the anaesthetic mask for patients to use; the waste gas breathing out from the patients can be exhausted after treated by the waste gas recycling device; through the control of the first valve and the second valve, the proportion of the anesthetic gas and the oxygen can be conveniently adjusted, so that concentrations can be conveniently adjusted; and as the waste gas recycling device can recycle the waste gas breathing out from the patients, so that pollutioncan be greatly reduced.

The invention discloses a gas anaesthetic mask. The gas anaesthetic mask mainly comprises an outer frame, a converter, a cleaner, reinforcing ribs, a cannula frame and a rubber ring. The gas anaesthetic mask is reasonable in structural design, a T-shaped belt and a head binding belt can be matched with the rubber ring with the reinforcing ribs, the supporting strength can be guaranteed while pressing is carried out, the pressing tightness is guaranteed, and leakage is avoided; meanwhile, a first blocking frame and a second blocking frame inside are matched with a second cover plate and a second cover plate, the structure is compact, double-channel flowing gas supply is realized, meanwhile, opening and closing are stable, and the sealing performance is good; the cleaner which is rapid to disassemble and stable in inserting and sealing is arranged inside, rapid disassembly and assembly can be carried out, the internal cleaning is guaranteed, the replacement is convenient, the bacteria breeding is avoided, and the maintenance cost and steps are reduced; and meanwhile, the converter is arranged, so that flexible conversion between oxygen and anesthetic gas can be carried out, instant and rapid gas supply conversion is realized, moreover, the equipment is double-pipe flowing gas, the gas inside the outer frame can be rapidly replaced, the precision of the anesthetic material is guaranteed, and the requirement for doctors is reduced.