34 results about "Arterial perfusion" patented technology

This invention relates to a venous cannula for use in conjunction with cardiovascular examinations, treatments and surgery. The venous cannula is configured for two-stage drainage of oxygen-depleted venous blood from a central venous location via a peripheral venous insertion site, such as a femoral vein. The venous cannula is optimized for use in a cardiopulmonary bypass system that includes a multichannel arterial perfusion catheter. The cardiopulmonary bypass system is advantageous for use in performing standard open chest or least invasive cardiac surgical procedures.

An implantable coronary perfusion monitoring device for in-vivo determination of a coronary perfusion index (CPI) indicative of the coronary perfusion of a heart has a time measurement unit to determine a blood pressure reflection wave measure t indicating the timely position in the heart cycle of the maximum of a reflected blood pressure wave and in a time period starting at a preset point of time in systole and ending at a local maximum of blood pressure following aortic valve closure and, a diastolic peak pressure measurement unit adapted to determine a diastolic peak blood pressure measure DPP related to diastolic aortic peak pressure and a systolic arterial pressure measurement unit adapted to determine a systolic arterial blood pressure measure SAP related to systolic arterial pressure, and a coronary perfusion index calculating unit adapted to determine said coronary perfusion index CPI as (t·DPP) / SAP.

An atherectomy device comprising cannula systems having lumens adapted for insertion of a blood filter and an atherectomy catheter useful for performing atherectomy directly on a patient's cardiovascular tissue. Other embodiments include a lumen for arterial perfusion useful in providing oxygenated blood to the aorta during cardiopulmonary bypass. The distal end of the atherectomy catheter includes an assembly that comprises a pincer, a loop with or without a mesh, laser, hydraulics, or other suitable mechanism adapted for removing atheroma from a cardiac or vascular tissue. Methods of using the systems for vascular atherectomy are also disclosed herein.

The present invention relates to a device, system and method for monitoring of peripheral arterial perfusion of a subject. To enable distinguishing between low pulsatility caused by centralization or low cardiac output, the proposed device comprises an input (30) for receiving first detection data of a tissue region of a subject, said first detection data being acquired over time by detecting radiation reflected from and / or transmitted through tissue of the subject, and for receiving second detection data of a skin region of subject, said second detection data being acquired over time by detecting radiation received from said tissue region in response to coherent light being emitted towards said skin region, a PPG unit (32) for deriving a photoplethysmography, PPG, signal from said first detection data, a flow unit (34) for deriving, from said second detection data, a flow signal indicative of a flow of light scattering particles within the skin region, and an evaluation unit (36) for evaluating said PPG signal and said flow signal to obtain information on the peripheral arterial perfusion, wherein the evaluation unit is adapted to determine a state of low vascular compliance and / or a state of low cardiac output based on a combined evaluation of said PPG signal and said flow signal.

The invention relates to a device for the perfusion of a human liver graft, which includes: (a) an upper tray which includes a container suitable for holding a liver graft in an inverted position with respect to the normal anatomical position, in contact with a preservative solution, an arterial perfusion circuit, and a portal perfusion circuit, separate from said arterial perfusion circuit; and (b) a lower console, which supports said tray and which includes a means for sending or supplying said preservative solution, a means for supplying power, a means for temperature control, a means for supplying oxygen, a means for controlling the flow rate and pressure, said tray and console being connected in a secure, removable manner, wherein said means for temperature control maintain the temperature of the liver graft between 0 ºC and 40 ºC.

The invention relates to a device for the preservation of a hepatic graft (1) in normothermia comprising a receptacle (2) in which said hepatic graft (1) is housed in a preservation solution, an arterial perfusion circuit (3), a portal perfusion circuit (5), at least one flow sensor (7) of a perfusion circuit, and at least one pressure sensor (8) of a perfusion circuit. For the purpose of increasing the preservation of the hepatic graft (1), the preservation device additionally comprises an arterial oxygenator (11) connected to the arterial perfusion circuit (3), a portal oxygenator (12) connected to the portal perfusion circuit (5), at least one arterial perfusion pump (9), at least one portal perfusion pump (10), a temperature exchange module (13) configured to maintain the temperature inside the receptacle (2) in normothermia, and a pressure and flow control device (14).

The invention relates to a device for the preservation of a hepatic graft in normothermia comprising a receptacle in which said hepatic graft is housed in a preservation solution, an arterial perfusion circuit, a portal perfusion circuit, at least one flow sensor of a perfusion circuit, and at least one pressure sensor of a perfusion circuit. For the purpose of increasing the preservation of the hepatic graft, the preservation device additionally comprises an arterial oxygenator connected to the arterial perfusion circuit, a portal oxygenator connected to the portal perfusion circuit, at least one arterial perfusion pump, at least one portal perfusion pump, a temperature exchange module configured to maintain the temperature inside the receptacle in normothermia, and a pressure and flow control device.

The invention discloses a pressure control device for the arterial perfusion of an isolated vascular. The device comprises a perfusate circulatory system, a gas system, and a pressure detection and control system. The perfusate circulatory system comprises a sealed pipe; the sealed pipe is connected to a pipeline which forms a circulatory pipeline with the sealed pipe; the end of the pipeline where the perfusate inflows is inserted below the liquid level of the sealed pipe; and a peristaltic pump and the isolated vascular are arranged on the pipeline. The gas system comprises an air inlet pipeand an air outlet pipe which are connected to a cavity part of the sealed pipe, wherein the air inlet pipe is connected to an air pump and a gas flow regulating valve, and the air outlet pipe is connected to an electromagnetic exhaust valve and a gas flow regulating valve. The pressure detection and control system comprises an air pressure sensor inserted into the cavity part of the sealed pipe,a control system connected to the air pressure sensor, and a display screen connected to the control system. According to the pressure control device for the arterial perfusion of the isolated vascular, the isolated vascular can be ensured to obtain sufficient nutrients when in-vitro culture; meanwhile, the dynamic pressure fluctuation of the perfusate can be maintained to be consistent with the change rule of human body pulse wave.

The invention relates to a common carotid artery cannula for adjusting and distributing blood perfusion flow and application. The common carotid artery cannula comprises a cannula body at a blood supply end and is characterized by further comprising a T-shaped or Y-shaped structured extracorporeal circulation perfusion plastic tube with a proximal end tube and a distal end tube for dividing flow and pressure, wherein the extracorporeal circulation perfusion plastic tube is communicated with the cannula body and formed on an overall structure. An included angle is formed between the proximal end tube of the Y-shaped structured perfusion tube and the cannula body at the blood supply end to distribute or adjust the blood perfusion flow. The common carotid artery cannula is applied to whole-body arterial perfusion and deep hypothermic circulatory arrest selective cerebral perfusion during extracorporeal circulation of a common carotid artery, and overcomes the shortcomings of an existing artery cannula and method. Carotid artery occlusion time is short during intubation and extubation, and cerebral blood supply is almost not affected, so that cerebral complications and the pain of patients are decreased. Obviously, the common carotid artery cannula is convenient to operate, surgical time is greatly shortened, so that cerebral ischemic time is shortened, the success rate of an aortic arch surgery is increased, and the common carotid artery cannula has a wide clinical application value.

The invention relates to an axillary artery cannula for achieving no perfusion ischemic areas during extracorporeal circulation period and application thereof. The axillary artery cannula comprises a cannula body with a blood supplying end, and is characterized by also comprising a proximal artery tube and a distal artery tube which communicate with the cannula body and play roles in shunting and sharing pressure, thus forming an extracorporeal circulation plastic perfusion tube of which the whole structure is T-shaped or Y-shaped, wherein an included angle is reserved between the proximal artery tube of the perfusion tube with Y-shaped structure and the cannula body of the blood supplying end to distribute and adjust blood flow volume of perfusion. The axillary artery cannula is applied to a right axillary artery to achieve systemic arterial perfusion during the extracorporeal circulation period and selective cerebral perfusion during deep hypothermic circulatory arrest, and meanwhile can avoid right upper limb ischemia. Obviously, the axillary artery cannula can meet systemic arterial perfusion during the extracorporeal circulation period and cerebral perfusion during circulatory arrest, can distribute and adjust perfusion blood flow, and achieves no perfusion ischemic areas; and the axillary artery cannula is simple and convenient to operate, easy and reliable to fix, not prone to rising perfusion pressure and causing blood leakage, less in blood damage, greatly shortened in operation time and reduced in right upper limb ischemic time.

The invention discloses a method for establishing a prognosis model for treating advanced liver cancer patients by HAIC, which comprises the following steps: (1) acquiring sample data, and screening the sample data; (2) carrying out single-factor analysis and multi-factor analysis by adopting a Cox proportional danger model, and selecting factors influencing prognosis from the sample data; (3) establishing a column graph prediction model for predicting prognosis according to the sample data and the factors influencing prognosis; and (4) verifying the column graph prediction model by adopting c-index and a correction curve. The model established by the method can evaluate the hepatic artery perfusion chemotherapy prognosis model of the local advanced liver cancer patient, and the model is displayed in the form of a column diagram, so that the model is intuitive and simple, and is convenient for clinical doctors and patients to operate and carry out individualized prediction on the patients.

The invention discloses a vena cava retroperfusion tube and a use method thereof, and belongs to the field of medical apparatuses. The vena cava retroperfusion tube comprises an arterial perfusion tube. The arterial perfusion tube is connected with an arterial perfusion branch tube A and an arterial perfusion branch tube B. The free end of the arterial perfusion branch tube A is connected with oneend of a vena cava drainage tube A. The free end of the arterial perfusion branch tube B is connected with one end of a vena cava drainage tube B. The arterial perfusion branch tube A and the vena cava drainage tube A are integrally formed, and the arterial perfusion branch tube B and the vena cava drainage tube B are integrally formed. The vena cava drainage tube A or the vena cava drainage tubeB is connected with the arterial perfusion tube through a retroperfusion tube body. The arterial perfusion branch tube A, the arterial perfusion branch tube B, vena cava drainage tube A and the venacava drainage tube B are all hoses. The vena cava retroperfusion tube has the advantages of being convenient to operate, short in preparing time and capable of being rapidly switched among various perfusion modes.

The invention relates to an axillary artery and femoral artery cannula without a perfusion ischemia area and application of the cannula. The axillary artery and femoral artery cannula comprises a cannula main body of a blood supply end; the axillary artery and femoral artery cannula is characterized by further comprising a proximal end tube and a distal end tube, the two of which are communicated with the cannula main body and have shunting and pressure dividing effects, and a plastic extracorporeal circulating perfusion tube which is formed on the overall structure and formed into a T-shaped or Y-shaped structure, wherein an included angle is formed between the proximal end tube of the perfusion tube of the Y-shaped structure and the cannula main body of the blood supply end so that the perfusion blood flow can be distributed or regulated. The axillary artery and femoral artery cannula without the perfusion ischemia area is applied to the axillary artery and the femoral artery on the right side to realize arterial perfusion of the whole body and selective cerebral perfusion of deep hypothermic circulatory arrest during extracorporeal circulation, and meanwhile, the ischemia of the right upper limb and the right lower limb can be avoided; obviously, the axillary artery and femoral artery cannula without the ischemia area is capable of realizing the distribution and control of the perfusion blood flow, and no perfusion ischemia area is formed during extracorporeal circulation; besides, the axillary artery and femoral artery cannula is convenient to operate and high in universality; the operation time can be greatly reduced so that the limb ischemia time can be reduced; in short, the axillary artery and femoral artery cannula without the perfusion ischemia area can be widely applied.

The invention relates to a transcatheter arterial perfusion system, and the system comprises an injection device, wherein the injection device comprises a first injector and an injection assembly, the injection assembly is connected with the first injector, and the injection assembly is used for setting injection parameters and pushing the first injector according to preset parameters; a detection device which comprises a second injector and a detection assembly, wherein the detection assembly is used for detecting injection parameters of the medicament; a display assembly which is in control connection with the detection device, wherein the display assembly is used for displaying the medicament injection parameters acquired by the detection device; and a microcatheter which is selectively communicated with the first injector and the second injector. According to the transcatheter arterial perfusion system, errors of medicament injection during manual injection each time are effectively reduced, and the situation that backflow occurs or the micro-catheter pops out of the artery can be avoided. Meanwhile, the labor intensity of an operation operator can be greatly reduced, and the operation efficiency and the operation curative effect are improved.

The invention provides a four-branch artificial blood vessel for arcus aortae portion replacement perfusion. The artificial blood vessel comprises a body artificial blood vessel for introducing blood for perfusion and a brachiocephalic artery branch artificial blood vessel, a left common carotid artery branch artificial blood vessel and a left subclavian artery branch artificial blood vessel which are communicated with the body artificial blood vessel. An arterial perfusion branch artificial blood vessel communicated with extracorporeal circulation is further arranged on the body artificial blood vessel. Perfusion can be performed on the bilateral whole brain and the whole body during operation, the brain perfusion during operation during profound hypothermia circulation arrest is ensured to the maximum extent, postoperative neurological complications can be reduced, the operation technique can be simplified, and the operation time is shortened, so that the purposes of improving the operation success rate and reducing related operation complications are achieved.

An atherectomy device containing cannula systems having lumens adapted for insertion of a blood filter and an atherectomy catheter useful for performing atherectomy directly on a patient's cardiovascular tissue. Other embodiments include a lumen for arterial perfusion useful in providing oxygenated blood to the aorta during cardiopulmonary bypass. The distal end of the atherectomy catheter includes an assembly with a pincer, a loop with or without a mesh, laser, hydraulics, or other suitable mechanism adapted for removing atheroma from a cardiac or vascular tissue. Methods of using the systems for vascular atherectomy are also disclosed herein.

An atherectomy device comprising cannula systems having lumens adapted for insertion of a blood filter and an atherectomy catheter useful for performing atherectomy directly on a patient's cardiovascular tissue. Other embodiments include alumen for arterial perfusion useful in providing oxygenated blood to the aorta during cardiopulmonary bypass. The distal end of the atherectomy catheter includes an assembly that comprises a pincer, a loop with or without a mesh, laser, hydraulics, or other suitable mechanism adapted for removing atheroma from a cardiac or vascular tissue. Methods of using the systems for vascular atherectomy are also disclosed herein.

The invention discloses a remains preservative with detumescence, fading and deodorization functions and a preparation method thereof. The remains preservative is mainly prepared from the following raw materials in parts by volume: 10 to 40 parts of ethanol, 5 to 20 parts of glycerol, 1 to 20 parts of benzalkonium bromide, 1 to 10 parts of polyhexamethylene guanidine, 10 to 15 parts of hexamethylenetetramine, 0.2 to 10 parts of ethylparaben, 3 to 15 parts of organic acid, 5 to 10 parts of dimethyl fumarate, 0 to 0.3 part of essence, 0.5 to 3 parts of mannitol / sorbitol, 1 to 30 parts of low-toxicity metal salt and 10 to 40 parts of distilled water. According to the invention, normal remains and special remains (cardiovascular disease remains and edema remains) can be preserved and fixed by adopting arterial perfusion, intravenous perfusion, aortic arch method, left ventricle or injection method, and effective disinfection, preservation, detumescence, fading and deodorization effects are achieved; in addition, the preservative has efficient antibacterial property, can effectively inhibit the corrosion of bacteria to the remains and the autolysis of tissues, and is suitable for short-term preservation of the remains and preservation of the remains with cardiovascular diseases and edema.

The invention belongs to the medical appliance technique field, relates to an extracorporeal circulation self supporting oxygen system that can be used for treating fearful pulmonary function harm at the scene. The system includes an oxygenator, a vein conduction blood vessel, an artery infusion blood vessel and a chemical oxygen generator. An oxygen outlet of the chemical oxygen generator connects with an oxygen inlet of the oxygenator through pipe and adjustable valve, an oxygen inlet of the chemical oxygen generator connects with an oxygen exhaust of the oxygenator through pipe. The system gains precious time for rescuing critical patient and prolonging life, at the same time, residual oxgen after patient using and exchanged CO2 gas is lead to the chemical oxygen generator through pipe for using again, CO2 is absorbed fully, and residual oxygen is continuous used repeatedly.

The invention discloses an embalming method for fresh corpses. The method comprises the following steps: preparing a fresh corpse, and carrying out in-vitro disinfection; preparing the following materials: ammonia gas, alcohol, carbolic acid, glycerol, sodium benzoate, common perfume, industrial salt and saline water; perfusing the ammonia gas, alcohol, carbolic acid, glycerol, sodium benzoate andsaline water into the corpse from a femoral artery by a pipeline through adopting an artery perfusion technology; adding industrial salt into a storage warehouse made of PVC plastic, and then buryingthe whole corpse in the industrial salt; and finally placing the storage stock in a shady place in a whole corpse warehouse. The materials in the invention do not contain formaldehyde, inorganic oxides or organic oxides, so the embalming method has the advantages of small irritation, small harm to the environment and human health, simplicity, easily available in raw materials and strong operability, is suitable for embalming preservation of corpses, tissues and dissects in medical teaching and scientific research and funeral service work, is convenient to apply practically, and is beneficialto promotion and application.

The invention relates to a target artery selective marking method and device, electronic equipment and a storage medium. The method comprises the following steps: acquiring a blood vessel positioning image of a target artery; determining a selective excitation pulse according to the blood vessel positioning image; marking according to the selective excitation pulse to obtain a perfusion map of the target artery. According to the method, the selective excitation pulse taking the artery as the target is designed on line through the selected artery position needing to be marked and based on a single-channel or multi-channel parallel emission platform, and the selective excitation pulse is applied to the marking section in the artery spin marking sequence, so that the effects of selectively marking the specific artery and obtaining the specific arterial perfusion map are achieved.

The arterial perfusion device comprises a catheter, a connecting pipe, a radiography guide wire and a detector, a fixing plate is installed outside the radiography guide wire, and a backflow prevention mechanism is arranged in the catheter; the anti-backflow mechanism comprises blocking soft films symmetrically arranged in the guide pipe, one ends of the two blocking soft films are movably connected with the exterior of the guide pipe, the exterior of the blocking soft films are attached to the exterior of the fixing plate, and a flow adjusting mechanism is further arranged in the guide pipe; through cooperative use of a first air bag and a flow adjusting soft film in the flow adjusting mechanism, the infusion speed can be adjusted and controlled in the process of medicine infusion, liquid medicine impacts the flow adjusting soft film outwards during infusion, the flow adjusting soft film moves to the outside of a fixing plate through impact, and therefore the discharging speed of the liquid medicine is reduced, and the infusion speed is increased. In addition, the flow adjusting soft film can drive the first air bag to move in the moving process, so that the first air bag moves towards the interior of the catheter, and impact on the blood vessel in the perfusion process is avoided.

The invention discloses a body position braking device for the pancreatitis patient. According to the technical scheme, the body position braking device for the pancreatitis patient is characterized by comprising an abdomen fixing part, a leg fixing part and a body position retainer, the body position retainer comprises an abdomen connecting rod, a leg connecting rod and a hinge braking assembly,and an abdomen angle braking wheel is arranged on the abdomen connecting rod; a leg angle brake wheel is arranged on the leg connecting rod, the hinge brake assembly comprises a hinge rotating seat, an abdomen angle synchronizing wheel, a leg angle synchronizing wheel, an abdomen brake hand wheel and a leg brake hand wheel, and a rotating structure is arranged between the abdomen brake hand wheeland the abdomen angle synchronizing wheel. A braking structure is arranged between the abdomen braking hand wheel and the abdomen angle braking wheel, a rotating structure is arranged between the legbraking hand wheel and the leg angle synchronizing wheel, and a braking structure used for limiting rotation of the leg angle braking wheel is arranged between the leg braking hand wheel and the leg angle braking wheel. The body position braking device can effectively maintain the body position of a patient during regional arterial perfusion.

The invention relates to a carotid artery and femoral artery cannula capable of reducing ischemic time of a brain or limbs and application thereof. The carotid artery and femoral artery cannula comprises a cannula body with a blood supplying end, and is characterized by also comprising a proximal artery tube and a distal artery tube which communicate with the cannula body and play roles in shunting and sharing pressure, thus forming an extracorporeal circulation plastic perfusion tube of which the whole structure is T-shaped or Y-shaped, wherein an included angle is reserved between the proximal artery tube of the perfusion tube with Y-shaped structure and the cannula body of the blood supplying end to distribute and adjust blood flow volume of perfusion. The carotid artery and femoral artery cannula is applied to a right common carotid artery to achieve systemic arterial perfusion during the extracorporeal circulation period and selective cerebral perfusion during deep hypothermic circulatory arrest, and also applied to the femoral artery to achieve systemic arterial perfusion during the extracorporeal circulation period and meanwhile avoid lower limb ischemia. Obviously, the carotid artery and femoral artery cannula is convenient to operate, strong in universality and greatly shortened in operation time, so that ischemic time of the brain or the limbs can be greatly reduced, and success rate of aortic arch surgery is improved, and thereby carotid artery and femoral artery cannula can be widely used.

The invention relates to a carotid artery and arteria axillaris cannula capable of reducing brain or limb ischemia time and application. The carotid artery and arteria axillaris cannula comprises a cannula body at the blood supply end and is characterized by further comprising a proximal end tube, a far-heart end tube and an extracorporeal circulation and infusion plastic tube of a T or Y type structure, the proximal end tube and the far-heart end tube are communicated with the cannula body and have the flow and pressure dividing function, the extracorporeal circulation and infusion plastic tube is formed on an overall structure, and the proximal end tube of the Y-type infusion tube and the cannula body at the blood supply end form an included angle to distribute or adjust the infusion blood flow. The carotid artery and arteria axillaris cannula is used for the arteria carotis communis on the right side to achieve whole-body arterial perfusion and deep hypothermic circulatory arrest selective cerebral perfusion in the extracorporeal circulation period. The arteria axillaris on the right side achieves whole-body arterial perfusion and deep hypothermic circulatory arrest selective cerebral perfusion in the extracorporeal circulation period. Meanwhile, the upper right limb is prevented from ischemia. Obviously, the carotid artery and arteria axillaris cannula can achieve distribution and adjustment of the perfusion blood flow, and is convenient to operate and high in practicality, operation time is greatly shortened, therefore, the brain or limb ischemia time is reduced, the success rate of aortic arch surgery is improved, and the carotid artery and arteria axillaris cannula can be widely applied.

The invention discloses a vena cava retroperfusion tube and a use method thereof, and belongs to the field of medical apparatuses. The vena cava retroperfusion tube comprises an arterial perfusion tube. The arterial perfusion tube is connected with an arterial perfusion branch tube A and an arterial perfusion branch tube B. The free end of the arterial perfusion branch tube A is connected with oneend of a vena cava drainage tube A. The free end of the arterial perfusion branch tube B is connected with one end of a vena cava drainage tube B. The arterial perfusion branch tube A and the vena cava drainage tube A are integrally formed, and the arterial perfusion branch tube B and the vena cava drainage tube B are integrally formed. The vena cava drainage tube A or the vena cava drainage tubeB is connected with the arterial perfusion tube through a retroperfusion tube body. The arterial perfusion branch tube A, the arterial perfusion branch tube B, vena cava drainage tube A and the venacava drainage tube B are all hoses. The vena cava retroperfusion tube has the advantages of being convenient to operate, short in preparing time and capable of being rapidly switched among various perfusion modes.

The invention relates to a Carboxy-DiI compound as well as a preparation method and application thereof; the Carboxy-DiI compound is used as a fluorescent dye with higher water solubility, is high influorescence efficiency, can be used for arterial perfusion of a living heart and uniform labeling of micro-artery vascular endothelial cells, and is good in specificity and high in sensitivity.

The present invention relates to a device, system and method for monitoring of peripheral arterial perfusion of a subject. To enable distinguishing between low pulsatility caused by centralization orlow cardiac output, the proposed device comprises an input (30) for receiving first detection data of a tissue region of a subject, said first detection data being acquired over time by detecting radiation reflected from and / or transmitted through tissue of the subject, and for receiving second detection data of a skin region of a subject, said second detection data being acquired over time by detecting radiation received from said tissue region in response to coherent light being emitted towards said skin region, a PPG unit (32) for deriving a photoplethysmography, PPG, signal from said firstdetection data, a flow unit (34) for deriving, from said second detection data, a flow signal indicative of a flow of light scattering particles within the skin region, and an evaluation unit (36) for evaluating said PPG signal and said flow signal to obtain information on the peripheral arterial perfusion, wherein the evaluation unit is adapted to determine a state of low vascular compliance and / or a state of low cardiac output based on a combined evaluation of said PPG signal and said flow signal.

The invention belongs to the medical appliance technique field, relates to an extracorporeal circulation self supporting oxygen system that can be used for treating fearful pulmonary function harm at the scene. The system includes an oxygenator, a vein conduction blood vessel, an artery infusion blood vessel and a chemical oxygen generator. An oxygen outlet of the chemical oxygen generator connects with an oxygen inlet of the oxygenator through pipe and adjustable valve, an oxygen inlet of the chemical oxygen generator connects with an oxygen exhaust of the oxygenator through pipe. The systemgains precious time for rescuing critical patient and prolonging life, at the same time, residual oxgen after patient using and exchanged CO2 gas is lead to the chemical oxygen generator through pipefor using again, CO2 is absorbed fully, and residual oxygen is continuous used repeatedly.