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41 results about "Ductus arteriosus" patented technology
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The ductus arteriosus, also called the ductus Botalli, is a blood vessel in the developing fetus connecting the trunk of the pulmonary artery to the proximal descending aorta. It allows most of the blood from the right ventricle to bypass the fetus's fluid-filled non-functioning lungs. Upon closure at birth, it becomes the ligamentum arteriosum.
Medicament injection kit and medicament injection method
ActiveUS7297475B2Safely and efficiently in vivoSafely and efficiency in vivoBiocidePeptide/protein ingredientsMedication injectionVein
A medicament injection kit, for use in occluding a renal artery and a renal vein in a kidney and injecting a therapeutic medicament into the kidney so as to pressurize the kidney, includes: an artery catheter which includes a first balloon capable of occluding the renal artery; a vein catheter which includes a second balloon capable of occluding the renal vein; a syringe for injecting the therapeutic medicament, the syringe being capable of being connected to at least one of the artery catheter and the vein catheter; and a syringe for pressurizing the inside of the kidney by injecting a liquid, the syringe being capable of being connected to at least one of the artery catheter and the vein catheter.
Owner:TERUMO KK
Single continuous piece prosthetic tubular aortic conduit and method for manufacturing the same
A prosthetic aortic conduit for replacing a root portion of an aorta is provided. The conduit comprises a continuous tubular conduit along a substantially common axis. A portion of the tubular conduit does not substantially deform in a longitudinal direction and has resilient means which allow said another portion of the conduit to be expandable in a lateral direction. The portion that is able to deform laterally mimics the function of the sinuses of Valsalva. The method of manufacturing such a conduit comprises the steps of having a continuous weave of rows of yarn or the equivalent with a change in tightness of the rows so that in some portion of the conduit it is expandable in the lateral direction and in some portion of the conduit it is expandable in the longitudinal direction.
Owner:MAQUET CARDIOVASCULAR LLC
Surgical implants and delivery systems therefor
A stent for occluding the human ductus arteriosus comprises a length of wire of shape memory effect or superelastic material which is expandable from a relatively straightened state for introduction into the patient to an occluding state wherein the wire defines an occluding anchor part and a spiral anchor part and a straight linking part connecting the two wherein the wire has a series of turns extending over the cross-sectional area of the occluding anchor part.
Owner:ANSON MEDICAL LTD
Transradial coronary catheter
InactiveUS20090082756A1High strengthAdded torqueabilityCatheterDistal portionRight subclavian artery
Provided is a catheter suitable for catheterization of a right coronary artery using a right transradial approach. The catheter presents improved directionality, thereby requiring minimized external torque to be applied during insertion and diagnostic procedures. A catheter according to the disclosed design includes a tip near its distal end, a primary curve, a secondary curve, a tertiary curve and a proximal end accessible external a catheterized body. When properly inserted, the secondary curve may rest near the junction of the bracheocephalic trunk and the right subclavian artery, and the tertiary curve may rest in the superior curve of the right subclavian artery. In addition to improved directionality, the secondary and / or tertiary curve offers additional resistance against cephalic, or upward, back-up force by providing caudal, or downward, torque to more distal portions of the catheter body.
Owner:VIDYARTHI VASUNDHARA
Method for establishing rat external carotid artery catheter-indwelled cerebral ischemia reperfusion model
InactiveCN104983480AProtective structureImprove scienceSurgical veterinaryExternal carotid arteryBlood vessel
The invention relates to a method for establishing a rat external carotid artery catheter-indwelled cerebral ischemia reperfusion model. The method includes the following steps that: the direction of an external carotid artery blood vessel of a rat is drifted, the direction of the external carotid artery blood vessel of the rat is drifted to a position which is consistent with or parallel to the direction of an internal carotid artery blood vessel of the rat; the external carotid artery blood vessel is cut, a suture is inserted into an incision, so that cerebral ischemia can be formed in the neck of the rat; and 1 to 2 hours after the suture is inserted into the incision, and cerebral ischemia is formed, the suture is pulled out, and a catheter injection bag through which medicine can be injected repeatedly is arranged into the external carotid artery blood vessel. According to the method, an external carotid artery suture method is adopted to manufacture the rat ischemia reperfusion model, and therefore, the normal structures of an operation-side common carotid artery and an internal carotid artery can be protected; the catheter injection bag through which medicine can be injected repeatedly is indwelled in the external carotid artery, medicine can be injected into the internal carotid artery through the artery catheter repeatedly at different time points; nerve functional assessment after the model is established can be realized, and qualified animals could be accepted and subjected to experimental intervention, and therefore, the scientific nature of experiments can be greatly improved.
Owner:GENERAL HOSPITAL OF CHINESE PEOPLES ARMED POLICEFORCES
Single continuous piece prosthetic tubular aortic conduit and method for manufacturing the same
InactiveUS20080177379A1Maintaining a degree of flexibilityOvercomes drawbackBlood vesselsYarnMedicine
A prosthetic aortic conduit for replacing a root portion of an aorta is provided. The conduit comprises a continuous tubular conduit along a substantially common axis. A portion of the tubular conduit does not substantially deform in a longitudinal direction and has resilient means which allow said another portion of the conduit to be expandable in a lateral direction. The portion that is able to deform laterally mimics the function of the sinuses of Valsalva. The method of manufacturing such a conduit comprises the steps of having a continuous weave of rows of yarn or the equivalent with a change in tightness of the rows so that in some portion of the conduit it is expandable in the lateral direction and in some portion of the conduit it is expandable in the longitudinal direction.
Owner:DU GEORGE
Heart septal defect blocking device
ActiveCN101120893AWays to reduce mobilityReduce formation rateSurgeryBlood vessel filtersHeart septal defectThrombus
A heart septal defect occluder, its main body is a metal support net with a preset expanded shape. It has a left plate at the front end and a right plate at the rear end. There is a head near the center of the left and right plates to seal the metal support net and connect it with the metal support net. The head is turned up inside the closed metal support net, and the outer surface of the turned-up head has no head and no obvious groove, which is almost flat. There is a layer of outflow blocking film on the outer surface of the left disk or the left and right disks, and the flow blocking film is fixedly connected with the outer surface of the left disk. The invention removes the damage of the head to the surrounding tissues of the heart, reduces the way of affecting blood flow, is beneficial to promote the growth of the endothelium, and reduces the formation rate of thrombus and the release of harmful metal elements. Applicable to congenital heart disease including patent foramen ovale (PFO), patent ductus arteriosus (PDA), atrial septal defect (ASD) and ventricular septal defect (VSD), etc.
Owner:LIFETECH SCIENTIFIC (SHENZHEN) CO LTD
Novel degradable stopper implanted through guide pipe and conveying system of novel degradable stopper
ActiveCN104905890ANo adverse reactionAvoid potential risksSurgeryProsthesisPatent ductus arteriosisInterventricular septum
The invention provides a novel degradable stopper implanted through a guide pipe. The novel degradable stopper comprises a ball bag, a supporting rod and degrading liquid. The supporting rod is fixedly connected with the ball bag, the periphery of the supporting rod is wrapped by the ball bag, and the degrading liquid is a biological material which can be degraded and absorbed and is arranged in the ball bag in a filling mode to play a supporting effect. The invention further provides a conveying system of the novel degradable stopper implanted through the guide pipe. The conveying system comprises a long sheath, an inner core, a loader, a pushing rod and an infusion pipe. The stopper is made of degradable materials, foreign objects are not left in vivo, and a long-term effect is obvious. In addition, the stopper is of a ball bag type structure, and the inner filler of the stopper is temperature-sensitive hydrogel. When an abnormal defect is blocked, the stopper can be attached to the periphery of the defect completely, and especially a better blocking effect is achieved on irregular defects. The stopper can be suitable for blocking of the patent ductus arteriosus and can be made into a stopper suitable for atrial septal defects and a stopper suitable for ventricular septal defects through changing of the shape of the ball bag.
Owner:徐州亚太科技有限公司
Multifunctional tumor insertion thermotherapy machine
InactiveCN101120891AEasy to useLow consumable valueMedical devicesSurgical instruments for heatingWater bathsTherapeutic effect
The present invention is a tumor interventional thermal therapy machine with multiple functions, which is characterized in that a blocking perfusion loop is arranged. The blocking perfusion loop is a fluid-conveying pipe arranged between a storage liquid bag and an introduction tube. An introduction pump and a heating unit are arranged in series connection in the fluid-conveying pipe. The heating unit is a hot water bath groove. Middle section of the fluid-conveying pipe is a heat exchange tube arranged in the hot water bath groove. The present invention possesses advantages of reasonable structure, safe application, low application cost and reliable treatment effect. The present invention can realize multiple function therapies of ''thermal perfusion chemotherapy in target tumor artery through an artery catheter'', ''thermal perfusion chemotherapy in thoracoabdominal cavity'' and ''thermal perfusion chemotherapy in bladder'', respectively.
Owner:程海宇 +1
Antagonistic peptides of prostaglandin E2 receptor subtype EP4
InactiveUS20050164949A1Improving glomerular filtrationIncrease urine outputPeptide/protein ingredientsOrganic chemistry methodsCrypt cellCarbamate
Antagonistic peptides of prostaglandin E2 receptor subtype EP4 and their use in the treatment or prevention of medical conditions associated with oligouric nephropathy, bone resorption, abnormal intestinal crypt cell proliferation or patency of the ductus arteriosus and the like are provided herein. The antagonistic peptides of the present invention can include the following formula: X-ARnYm wherein “X” is a hydrogen atom or an amine protecting group producing a carbamate or an amide when reacting with the amine; “A” is L-(4,4′)-biphenylalanine or D-(4,4′)-biphenylalanine; “R” is an amino acid selected from the group consisting of threonine, serine, tyrosine, glutamic acid, alanine, leucine and glycine; “Y” is lysine; “n” is an integer ranging from 5 to 7; and “m” is an integer ranging from 0 to 2.
Owner:THERATECHONOLGIES INC
Blood collection device used during invasive artery monitoring
ActiveCN103519830ASimple structureEasy to useCatheterDiagnostic recording/measuringBlood Collection TubePediatrics
The invention discloses a blood collection device used during invasive artery monitoring. The blood collection device comprises an arterial duct, a pressure connection tube, a pressure sensor, a continuous washing system and an electronic monitor, wherein the pressure connection tube is filled with liquid and provided with a switch. The blood collection device is characterized in that the pressure connection tube is provided with a blood collection plug, a three-way plug valve and an injection syringe, the blood collection plug is arranged on the part, on the root of a palm of a patient, of the pressure connection tube, the three-way plug valve is arranged between the blood collection plug and the injection syringe, and the injection syringe and the pressure connection tube are formed at a time. During blood collection, the injection syringe sucks the liquid in the pressure connection tube, blood is sucked to the position of the blood collection plug, a blood taking needle punctures the blood collection plug and the blood is collected; after blood collection is finished, the liquid sucked out by the injection syringe is injected into the pressure connection tube, waste of the blood of the human body of avoided, and pulsating pressure produced during injection of the injection syringe can reduce the blood vessel blocking probability; meanwhile, no bloodstain is formed on the blood collection position, and therefore the blood infection probability of the patient is reduced; in addition, blood collection steps are simplified and the quantity of consumables is reduced.
Owner:NANTONG HENGTAI MEDICAL APP
A stent and a stent system
The invention relates to a stent. The stent includes at least one degradable section zone and at least one non-degradable section zone which are connected to each other. The axial length of the at least one degradable section zone is not less than 3 mm. At least one end of the stent is provided with the non-degradable section zone the axial length of which is not less than 3 mm. The stent enablessubsequent arterial duct closing after implantation of the stent into an arterial duct without the need of taking out the stent, thus reducing the probability of harm to child patients and other complications. The invention also provides a stent system.
Owner:BIOTYX MEDICAL (SHENZHEN) CO LTD
Ibuprofen and lysine medicament compound as well as preparation method and application thereof
InactiveCN101874794ASimple manufacturing processIncrease productivityOrganic active ingredientsAntipyreticMedicineRheumatism
The invention discloses an ibuprofen and lysine medicament compound as well as a preparation method and the application thereof. The medicament compound contains ibuprofen and lysine in the mole ratio of 1:0.5-1:2. An aqueous solution preparation of the medicament compound can be prepared by firstly dissolving lysine into water to form a lysine solution, and then dissolving ibuprofen into the lysine solution to form the aqueous solution of ibuprofen and lysine. The medicament compound is used for refrigerating, easing pain, resisting inflammation, resisting rheumatism and treating unclosed ductus arteriosus, and the like.
Owner:航天中心医院
Methods of diagnosis using pulse volume measurement
The utility of pulse volume measurement is expanded to detection of many conditions which have previously not been detected or have been detected using more complicated techniques. Such conditions include blood loss, septic shock, cardiogenic shock, neonatal sepsis, patent ductus arteriosus, limb ischemia, intra-aortic balloon pump performance, peripheral vascular disease, congestive heart failure, the effectiveness of vasoactive medications, syncope, dehydration, pre-eclampsia, deep vein thrombosis, thermal injuries, vascular instability due to renal dialysis, compromising of circulation to the hand caused by radial artery harvesting, changes in cardiac output, and hypertension. According to the present invention, such diagnoses can be performed by taking one measurement, by taking measurements over time to detect a change or by taking measurements before and after application of a treatment or stimulus.
Owner:SMITHMARKS INC
Application of multi-protein composition and congenital heart disease screening kit
The invention discloses an application of a multi-protein composition and a congenital heart disease screening kit. The detection and functions of a platelet factor 4, a vascular hemophilia factor, fibrinogen, collagen, protein-associated serine protease 2 and fibronectin are researched by utilizing a modern biological technology and bioinformatics analysis, and it is discovered that the combinedapplication has the purpose of predicting patent ductus arteriosus of a congenital heart disease; the multi-protein composition can be applied to the preparation of a targeted drug for early intervention of related diseases, and also can be applied to the preparation of the congenital heart disease screening kit; and the kit has a potential huge application value for preventing the disease, namely, the patent ductus arteriosus.
Owner:TEDA INT CARDIOVASCULAR HOSPITAL
Aortic conduit configured with terminal ends having neosinuses of valsalva
A prosthetic aortic conduit (1) for use during surgery on the aorta of a patient. The conduit includes an elongate tubular portion (10) extending along a longitudinal axis (11) between a first conduit terminal end (12) and a second conduit terminal end (13). The first conduit terminal end (12) is configured with two substantially U-shaped tongues (21, 22) extending away from the tubular portion (10) generally along the longitudinal axis (11). Each of the tongues (21, 22) is appropriately sized to together collectively approximate the shape of the scalloped bicuspid valve annulus. The second conduit terminal end (13) is configured with three substantially U-shaped tongues (31, 32, 33) extending away from the tubular portion (10) generally along the longitudinal axis (11). Each of the tongues (31, 32, 33) is appropriately sized to together collectively approximate the shape of the scalloped tricuspid valve annulus.
Owner:CORONEO
Tissue engineering patend ductus arteriosus occluder
InactiveCN101061972AHas degradable propertiesAchieve self-healingStentsSurgeryDuctus arteriosusHeart disease
The invention discloses a tissue project arterial duct unclosed plugging device, which is characterized by the following: knitting T shape mount with degradable biological material with elasticity; un-filling plugging material in the mount to stop blood flow; painting cell hyperplasia medicine on the surface of the plugging device; accelerating quick grow of plugging device metallic mount surface fiber cell and under bark cell; reaching the goal of with self cell to plug abnormal channel; possessing degradability; realizing self-repairing effect of unclosed arterial duct.
Owner:解启莲
Aryl (Ethanoic) Propanoic Acid Ascorbyl Ester, Preparation Method Thereof And Medicament Containing The Same
InactiveUS20120115897A1Improve bioavailabilityImprove solubilityBiocideNervous disorderSolubilityAscorbigen
The present invention designs and synthesizes the ascorbyl ester derivatives of the aryl (ethanoic) propanoic acid non-steroidal anti-inflammatory medicaments, such as ibuprofen, ketoprofen and naproxen, and addition salt of the derivatives with pharmaceutical acid or pharmaceutical alkaline. The non-steroidal anti-inflammatory medicament which takes the ibuprofen as the representative is a common antipyretic analgesic medicament. The invention has remarkable antipyretic and analgesic effects and good safety except for anti-inflammatory effect, thus being not only suitable for adults, but also suitable for the elderly people, infants and children. The aryl (ethanoic) propanoic acid ascorbyl ester can be converted into ascorbyl ester derivatives and the addition salts of the derivatives with pharmaceutical acid or pharmaceutical alkaline, which can improve the water solubility thereof, facilitate intravenously administration, reduce the onset time, improve the bioavailability, reduce the stimulation effect to gastrointestinal tract, and enhance the penetrating capacity to hemato encephalic barrier, and can be used as a novel medicament to be applied for antiphlogistic, antipyresis, analgesia, treatment of arthritis, dysmenorrheal, multiple sclerosis, pneumonia cystic fibrosis and patent ductus arteriosus of premature infants, and prevention and treatment of cerebral apoplexy, hypoxic-ischemic brain damage, senile dementia and certain cancers.
Owner:WUXI HONGRUI BIOMEDICAL TECH CO LTD +1
Dual-direction artery conduit used for assisting circulation, control system and control method thereof
ActiveCN106267398AEnsure blood oxygen supplyEven blood oxygen supplyOther blood circulation devicesDialysis systemsArterial catheterizationsThird aortic arch
Provided is a dual-direction artery conduit used for assisting circultion, a control system and a control method thereof. The conduit comprises a cylinder conduit body, a blood channel is formed along the central axis line of the conduit body, both ends of the blood channel near the conduit body is straight line shape, the upper end is front outlet of blood, while the lower end is the inlet of blood, the middle part of the blood channel is S shape, a sided reverse outlet is arranged near the upper side of a crook of the S-shaped channel along the blood flow direction, one end of the sided reverse outlet is connected with the blood channel, the other end is opposite to the front outlet and passes the outer wall of the conduit body. Through formation of the sided reverse outlet near the crook of the S-shaped channel, when blood flows along the S-shaped channel, a part of blood flows from the front outlet and the other part flows from the sided reverse outlet, which enables the oxygenated blood to flow respectively along two directions to not only guarantee blood flow of lower arms but also blood oxygen supply of coronary artery and branched arteries of aortic arch, and enables uniform oxygen blood supply of the coronary artery the upper arms, brain tissue and lower to avoid 'the north and south syndrome'.
Owner:安徽先方医疗科技有限公司
Patent ductus arteriosus plugging device
InactiveCN104000630AEasy to fixMeet the problem of poor blocking effectSurgeryMedicineDuctus arteriosus
The invention discloses a patent ductus arteriosus plugging device. A fabric body is sequentially provided with a right disc, a first reducing neck, a first cylinder, a second reducing neck, a second cylinder and a left disc from a right heat system to a left heart system; the two cylinders are in hollow cylinder shapes with the diameter from 4 mm to 20 mm; the diameter of the two reducing necks is obviously smaller than that of the two cylinders; the thickness of the two reducing necks is smaller than or equal to 1 mm; the right disc is in a round shape with the external edge to be 1 mm larger than the first cylinder; the left disc is in a round shape with the external edge to be 3.5 mm larger than the second cylinder; closing positions of the fabric body are arranged at centers of the two discs; a threaded column is fixed at the closing position on the right disc; two expanding thin films are arranged in an empty chamber inside the second cylinder. According to the patent ductus arteriosus plugging device, diameter of the reducing neck portion and the cylinder portion has significant difference, micro-deformation in the length direction can be achieved, and the plugging device can be firmly fixed inside an arterial duct to form into a riveting force.
Owner:SHANDONG PROVINCIAL HOSPITAL
Detection of patent ductus arteriosus using photoplethysmography
Methods and systems are described for detecting the likelihood of patent ductus arteriosus (PDA) in an infant using electrocardiogram and photoplethysmographic pulse signals obtained from the upper body and foot of the infant.
Owner:THE FEINSTEIN INST FOR MEDICAL RES
Smart transportation device used for minimally invasive closure of patent ductus arteriosus
The invention discloses a smart transportation device used for minimally invasive closure of patent ductus arteriosus, and belongs to the technical field of medical apparatuses. A handle is threaded to the tail end of an outer sheath tube, a pushing piece is mounted at the front ends in the handle, a pushing rod is mounted at the rear end of the pushing piece, the rear end of the pushing rod is connected with an input end of a sensor, and an output end of the sensor is connected with a control unit. A loading sheath is mounted at the front end of the outer sheath tube, the loading sheath is provided with a video device, and the video device is wirelessly controlled with the control unit. A closing device can be transported through ultrasonic guiding, no radioactive wound affects people during an operation, radiography is needless, and no medical damage occurs. The transportation of the closing device can be intelligentized through the sensor and the control unit, a transportation system is short and small and can be held by hands, so the transportation system can be close to a defect portion to the nearest, only one doctor can puncture, adjust the direction, establish a track, and release the closing device, and the safety of a patient can be furthest ensured.
Owner:段书华
Compositions for treating abnormalities in glomerular filtration, patent ductus arteriosus and osteoporosis
InactiveUS7442763B2Improve filtering effectIncrease urine outputPeptide/protein ingredientsMicrobiological testing/measurementDiseaseZona glomerulosa
The present invention relates to a composition of matter comprising novel prostaglandin E2 receptor antagonists, and their use in treatments for regulating the fluid filtration in the kidney, preventing bone mineral loss in osteoporosis and dental disease and additionally, closure of ductus arteriosus (DA) in premature infants or fetal animals. Additionally, the compositions include linear peptides, peptide analogs, and peptidomimetics.
Owner:HOPITAL SAINTE JUSTINE
Blood collection device used during invasive artery monitoring
ActiveCN103519830BReduce infection rateSimple structureCatheterDiagnostic recording/measuringBlood Collection TubePediatrics
Owner:NANTONG HENGTAI MEDICAL APP
Detection of patent ductus arteriosus using photoplethysmography
Methods and systems are described for detecting the likelihood of patent ductus arteriosus (PDA) in an infant using electrocardiogram and photoplethysmographic pulse signals obtained from the upper body and foot of the infant.
Owner:THE FEINSTEIN INST FOR MEDICAL RES
Central Pressurized Cadaver Model
Provided are methods for creating a pressurized cadaver model used for surgical procedure training. In the method the internal jugular veins, common carotid arteries, brachial arteries, superficial femoral arteries and femoral veins thereof of a cadaver are exposed. One internal jugular vein is ligated and a drainage tube is disposed in the other internal jugular vein. An arterial catheter is inserted into one brachial artery and connected to a pressure transducer and an arterial cannula is placed in a carotid artery and connected to a fusion pump. Fluid is injected into the artery through the cannulated carotid artery. A representative example of the surgical procedure includes resuscitative endovascular balloon occlusion of the aorta.
Owner:UNIV OF MARYLAND BALTIMORE
Aryl (ethanoic) propanoic acid ascorbyl ester, preparation method thereof and medicament containing the same
InactiveUS8703975B2Rapid onsetValuable pharmacokinetic propertyNervous disorderOrganic chemistrySolubilityAscorbigen
Owner:WUXI HONGRUI BIOMEDICAL TECH CO LTD +1
Natriuretic peptides for diagnosing cardiac complications due to coronary catheterization
InactiveUS20100255590A1Material analysis using wave/particle radiationMicrobiological testing/measurementTest sampleCoronary artery guide catheter
The present invention discloses a method for diagnosing a cardiac complication in a patient due to coronary catheterization, comprising the steps of (a) obtaining at least one baseline sample from the patient during or after coronary catheterization, and then (b) obtaining at least one test sample from the patient after coronary catheterization, (c) determining a change of the level of an ANP-type peptide between the baseline sample and the test sample, wherein a significant decrease in the level of the ANP-type peptide according to step c) indicates a cardiac complication.
Owner:ROCHE DIAGNOSTICS OPERATIONS INC
Plugging device for unclosed hole of patent ductus arteriosus
The invention discloses a plugging device for an unclosed hole of a patent ductus arteriosus. The perforated plugging device for the unclosed hole of the patent ductus arteriosus comprises a front disk for plugging a gap, a cylindrical barrier part for blocking an unclosed ductus, and a through hole penetrating through the front disk and the cylindrical barrier part; one end of the cylindrical barrier part is connected with the front disk; the other end of the cylindrical barrier part is a closed end; the diameter of the front disk is greater than that of the cylindrical barrier part; the front disk, the cylindrical barrier part and the through hole are all formed by weaving a plurality of memory alloy wires; the memory alloy wires penetrate through the through hole to form the hole wall of the through hole and are wound to form the front disk and the cylindrical barrier part; the two ends of the memory alloy wires are fixed to the same fixing clamp for restricting the memory alloy wires; the memory alloy wires are interwoven to form an elastic mesh; a sealing film is arranged in the elastic mesh. According to the perforated plugging device for the patent ductus arteriosus, the shunt of aorta-pulmonary artery is limited, and the blood flow of the aorta of a high-pressure chamber is also prevented from flowing to the pulmonary artery; the volume overload and the pressure transfer of pulmonary vessels are lightened; serious consequences caused by sudden rise of the pulmonary artery pressure can also be prevented, so that the high pressure of a right heart system has release space.
Owner:尚小珂
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