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33 results about "Inside the blood vessel" patented technology
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Blood vessels are hollow tubes that blood flows through. They have walls made of muscle. The hollow place inside of the blood vessel is called the lumen. Veins have small flaps of tissue called valves. These keep the blood flowing the right direction by closing if any blood tries to flow backwards.
Endovascular treatment of a blood vessel using a light source
InactiveUS20050015123A1Relieve physiological problemRelieve symptomsSurgical instrument detailsCatheterEndovascular treatmentVein
A method and apparatus to endovascularly treat blood vessels using a light beam that causes minimal collateral damage to surrounding tissue is described. The technique can improve the appearance of a blood vessel and / or reduce its size, as well as relieve other medical symptoms. The wavelength of the light beam can be selected so as to heat one or more chromophores either inside the blood vessel or within the blood vessel wall itself. Access to the vein lumen of the targeted blood vessel can be obtained via an optical fiber inserted into the blood vessel through a catheter.
Owner:CANDELA CORP
Device for visually indicating a blood pressure
InactiveUS7654963B2Decreased blood flowDeployed safely and correctlyInfusion syringesSurgeryVisual observationBlood pressure kit
An indicator device for visually indicating a pressure of blood inside a blood vessel includes: a body, the body comprising a duct extending in the body and having a sealed proximal end; a distal end portion adapted to be positioned inside the blood vessel and including a liquid inlet opening in fluid communication with the duct; and a window including an at least semi-transparent section configured to enable visual observation of blood entering into the duct via the inlet opening when the inlet opening is located inside the blood vessel.
Owner:ST JUDE MEDICAL COORDINATION CENT
Absorbable medical sealing device with retaining assembly having at least two loops
InactiveUS8398675B2Reduce riskGuaranteed safe sealSuture equipmentsSurgical veterinaryMechanical engineeringMedical treatment
A device having an inner seal and a retaining assembly seals a puncture in a blood vessel. The inner seal is placed inside the blood vessel and seals the puncture by contacting the inner surface wall of the blood vessel. The retaining assembly has at least two loops which engage the inner seal. Each loop may remain in substantial contact with the inner seal for substantially 360 degrees of the travel of each loop. The at least two loops may lie in a plane which is parallel to both the major axis of the inner seal and a folding axis. A locking member may be slid along the retaining assembly so as to contact the outer surface wall of the blood vessel.
Owner:ST JUDE MEDICAL COORDINATION CENT
Catheter based mid-infrared reflectance and reflectance generated absorption spectroscopy
ActiveUS8571640B2Improve signal-to-noise ratioImprove reflectivityDiagnostics using spectroscopyColor/spectral properties measurementsReflection spectroscopyPhysiological markers
A method of characterizing conditions in a tissue, by (a) providing a catheter that has a light source that emits light in selected wavenumbers within the range of mid-IR spectrum; (b) directing the light from the catheter to an area of tissue at a location inside a blood vessel of a subject; (c) collecting light reflected from the location and generating a reflectance spectra; and (d) comparing the reflectance spectra to a reference spectra of normal tissue, whereby a location having an increased number of absorbance peaks at said selected wavenumbers indicates a tissue inside the blood vessel containing a physiological marker for atherosclerosis.
Owner:RGT UNIV OF CALIFORNIA
Lung tissue model for biotoxicity detection and biotoxicity detection method
The invention discloses a lung tissue model for biotoxicity detection and a biotoxicity detection method. The lung tissue model comprises a trachea, a blood vessel and an alveolus pulmonis unit, wherein an air passage is defined in the trachea, and an air inlet and an air outlet, which are communicated with the air passage respectively are formed at two ends of the trachea; a blood passage is defined inside the blood vessel, and a liquid inlet and a liquid outlet which are communicated with the blood passage respectively are formed at the two ends of the blood vessel, a cavity is defined in the alveolus pulmonis unit, an elastic ventilate membrane is formed on the wall of the alveolus pulmonis unit, the alveolus pulmonis unit is arranged in the blood passage, and the cavity is communicated with the air passage. By adopting the lung tissue model, an air exchanging function and a breathing strain effect of the lung blood in the body can be simulated; through planting cells in the alveolus pulmonis unit, the structure and function of the alveolus pulmonis unit in a body and inflammation reaction of immune cells can be simulated in the subsequent culture process.
Owner:TSINGHUA UNIV
Stent and artificial vessel having the same
Disclosed herein is a stent which is inserted into a blood vessel of a patient who has to undergo hemodialysis. The stent includes a wire frame which has a hollow cylindrical structure, and a window which is formed in a partial portion of a circumferential surface of the wire frame. The window has no wire therein. According to one aspect of the invention, the stent may further comprise a graft which covers the stent. Such a structure allows puncturing using a needle and inserting the needle into the window of the stent inside the blood vessel of the patient who has to periodically undergo hemodialysis, so as to makes it possible for hemodialysis to be reliably conducted for the patient who receives the treatment of inserting the covered stent due to arterial aneurysm. In this way, the present invention can solve problems not only of deformation of the covered stent which occurs when a hemodialysis needle is inserted into the stent, but also of patient discomfort when having skin punctured, high cost, thrombopoiesis, a risk of recurrence, etc.
Owner:李宗勋
Emboli capture device
ActiveUS20180311029A1Process stabilityStable deliveryHeart valvesBlood vessel filtersBiomedical engineeringInside the blood vessel
A filter device includes: a shaft having an intermediate coil wire between a proximal filter wire and a distal filter wire; a proximal filter on the proximal filter wire; and a distal filter on the distal filter wire. The intermediate coil wire is disposed to extend between downstream and upstream blood vessels to pass through a path of placement that leads to another downstream blood vessel. Both the filters have a contracted configuration for being delivered into the blood vessel and an expanded configuration for capturing an embolus inside the blood vessel. The proximal filter is oriented such that an inlet opening, for taking in the embolus, of a proximal filter body in the expanded configuration faces the distal side, and the distal filter is oriented such that an inlet opening, for taking in the embolus, of a distal filter body in the expanded configuration faces the proximal side.
Owner:ACCESS POINT
Laboratory animal vascular intimal injury experimental facility
The invention relates to the field of medical experimental equipment and particularly relates to a laboratory animal vascular intimal injury experimental facility. The laboratory animal vascular intimal injury experimental facility comprises a brush part and a handle part, wherein the brush part comprises a fixed assembly and bristles arranged on the outer peripheral surface of the fixed assembly or brush teeth arranged on the fixed assembly; the fixed assembly is connected with one end of the handle part; a diameter of the brush part is greater than or equal to an inner diameter of a vessel lumen of a laboratory animal and cannot be greater by 10 percent of the inner diameter of the vessel lumen of the animal at most. The laboratory animal vascular intimal injury experimental facility provided by the invention has a simple structure and is high in pertinence on an injured position; due to the case that the diameter of the brush part is slightly greater than or equal to the inner diameter of the vessel lumen, in the process that the brush part brushes back and forth inside the blood vessels, the bristles cannot damage a vascular intimal layer and hardly cause damage to a smooth muscle layer, so that interference of the smooth muscle layer to an experimental result is reduced.
Owner:PEKING UNION MEDICAL COLLEGE HOSPITAL CHINESE ACAD OF MEDICAL SCI
Lung tissue model for biotoxicity detection and biotoxicity detection method
The invention discloses a lung tissue model for biotoxicity detection and a biotoxicity detection method. The lung tissue model comprises a trachea, a blood vessel and an alveolus pulmonis unit, wherein an air passage is defined in the trachea, and an air inlet and an air outlet, which are communicated with the air passage respectively are formed at two ends of the trachea; a blood passage is defined inside the blood vessel, and a liquid inlet and a liquid outlet which are communicated with the blood passage respectively are formed at the two ends of the blood vessel, a cavity is defined in the alveolus pulmonis unit, an elastic ventilate membrane is formed on the wall of the alveolus pulmonis unit, the alveolus pulmonis unit is arranged in the blood passage, and the cavity is communicated with the air passage. By adopting the lung tissue model, an air exchanging function and a breathing strain effect of the lung blood in the body can be simulated; through planting cells in the alveolus pulmonis unit, the structure and function of the alveolus pulmonis unit in a body and inflammation reaction of immune cells can be simulated in the subsequent culture process.
Owner:TSINGHUA UNIV
Trans-vascular surgical method and associated device
ActiveUS7879050B2Minimally invasiveImprove performanceSuture equipmentsSurgical needlesSurgical departmentMedical treatment
Owner:WILK PATENT
Method for applying hot compress of respiratory tract to treat diseases with hot air and respiratory device
InactiveCN102989076AImprove the immunitySolve the problem of insufficient oxygen nutritionRespiratory masksMedical devicesNasal cavityDisease
The invention discloses a method for applying hot compress of a respiratory tract to treat diseases with hot air and a respiratory device. The method comprises heating cold air to a warm range relatively warm and comfortable for the respiratory tract to apply hot compress of the respiratory tract; hot air enables the blood vessels and respiratory muscles of the shrunk or spasmodic respiratory tract to have diastole and cause shrinkage reactions such as coughs, sneezes and the like to fade away; hot oxygen in hot air further enables a lung and red blood cells of people to be combined into hot blood so as to enlarge the blood flow of hot blood cycle, so that nasal mucus, sputamentum or other body fluids at inflammations or high water pressure congestion parts of the respiratory tract are also dispersed or evaporated along with hot blood cycle to cause a nasal cavity and tracheas to be smooth and easy; hot blood cycle can strengthen the blood power of carotid artery so as to be nutrient or strengthen the immunity of respiratory system, so that headache, faucitis and tonsillitis is quickly cured; moreover, the method is further beneficial to the effect of the whole body to hot oxygen, thereby strengthening the immunity of the whole body to diseases; and particularly for a fever patient, the method is easier to enable the fever patient to sweat, reduce hydraulic pressure inside the blood vessels, eliminate stagnation of blood stasis, soften tumor, diminish inflammation and bring down a fever.
Owner:张平平
Ultrasonic robotic cleaner freely movable back and forth inside a blood vessel
ActiveUS20210015510A1Increase speedSimple structureJet injection syringesEndoscopesElectric machineryEngineering
An ultrasonic robotic cleaner freely movable back and forth inside a blood vessel, having an elongated shell, electrical driving mechanisms, a storage battery, and a high frequency ultrasonic vibration unit; each electrical driving mechanism is formed by propellers, an ultra-micro motor, and a gear assembly; the high frequency ultrasonic vibration unit and the storage battery are mounted inside the elongated shell; the high frequency ultrasonic vibration unit and the ultra-micro motor are electrically connected with the storage battery; the electrical driving mechanisms are disposed at two ends of the elongated shell respectively. The robotic cleaner moves inside the blood vessel and achieves blood cavitation so that blood lipids are fragmented into finer particles which are eventually burnt due to peroxidation and metabolism and transformed into energy, water and CO2.
Owner:PENG ZHIJUN
Equipment capable of implementing observation and operation in blood vessel
The invention provides equipment capable of implementing observation and operation in a blood vessel. The equipment comprises a hollow catheter, an isolation component and a function pipe, one end of the hollow catheter is arranged inside the blood vessel, and the other end of the hollow catheter is arranged outside the body; the isolation component is used for isolating blood to form a blood vessel cavity where no blood flows through inside the blood vessel; the function pipe is connected to one end of the hollow catheter, is located in the blood vessel cavity, is provided with an inner cavity, and is used for installing all function devices or delivering liquid to conduct the observation or the operation. The equipment capable of implementing observation and operation in the blood vessel achieves the purpose of implementing the observation and the operation inside the blood vessel.
Owner:深圳希思凯科技有限公司
Guide wire rotary clamp
InactiveCN1820797AEasy to holdCan't play steering roleDiagnosticsSurgeryGuide wiresBiomedical engineering
The guide wire rotating clamp is special medical equipment for assisting guide wire to turn inside the blood vessel during intervention treatment. It consists of three parts, including a right clamp, a left clamp and a connecting shaft to connect the right clamp and the left clamp. Each of the right clamp and the left clamp has wide flat holding end, transverse slots of different widths in the holding surface, and spherical locking tail end. The guide wire rotating clamp is so designed as to clamp guide wire in any position, and has shortened distance between the clamping part and the front end of the guide wire, enough force to turn guide wire, capacity of holding guide wire of different sizes, small size and simple operation.
Owner:韩海林 +2
Intravascular blood flow measurement using differential pressure principle and an expanding flow sensor
PendingUS20200054225A1Cost effectiveQuality improvementCatheterDiagnostic recording/measuringPlasma densityControl signal
A blood flow measurement system for measuring a blood flow quantity such as flow velocity or flow volume inside a blood vessel includes an intravascular blood flow measurement device with a body that comprises an expandable body section. A control unit sequentially provides a size control signal indicative of a respective one of the at least two predetermined expandable sizes to be assumed by the expandable body section. A pressure sensor unit measures respective sequences of blood pressure signals over a measuring time span defined with respect to a heart cycle period. A flow determination unit uses the values of cross sectional area of the expandable body section, the associated pressure signals and a known value of a density of blood, to calculate a value of a blood flow quantity inside the blood vessel based on Bernoulli's law.
Owner:KONINKLJIJKE PHILIPS NV
Emergency hemostasis method and emergency hemostasis device for vascular surgery
PendingCN113116450AAchieve hemostasisCause compression damageOcculdersEmergency encounterVascular surgery
The invention discloses an emergency hemostasis method and an emergency hemostasis device for vascular surgery. The method is mainly realized by the following methods: determining a blood vessel that needs hemostasis, puncturing a blood vessel wall of the blood vessel from a bleeding site, sending an inflatable balloon matching a diameter of the blood vessel into the blood vessel, and blocking a blood flow channel inside the blood vessel through the inflatable balloon, so as to achieve a purpose of blood vessel hemostasis; withdrawing gas from the inflatable balloon and withdrawing the inflatable balloon from the blood vessel after surgery. The invention further discloses an emergency hemostasis device suitable for the emergency hemostasis method. The emergency hemostasis device comprises a pressing structure, a positioning structure, an air compression structure, an outer sleeve, a balloon gas injection pipe and an inflation balloon. The method and device can complete two actions of needle tip recovery and balloon inflation at the same time; are simple to operate, convenient and quick to use, have good hemostasis effect, and have little damage to blood vessels, are particularly suitable for patients whose blood vessels are fragile and cannot be stopped by clamping and compression methods such as vascular clamps, and are also particularly suitable for hemostasis in emergencies that occur during surgery.
Owner:方越
Trans-vascular surgical method and associated device
ActiveUS20060217595A1Minimally invasiveImprove performanceSuture equipmentsSurgical needlesSurgical departmentMedical procedure
A trans-vascular surgical method includes forming an artificial opening in a blood vessel of a patient's vascular system at a substantially predetermined location and moving a distal end portion of a medical instrument through at least a section of the patient's vascular system and through the artificial opening. A surgical port device is disposed inside the blood vessel to inhibit blood from exiting the patient's vascular system through the artificial opening while permitting extension of the distal end portion of the medical instrument through the artificial opening. After moving the distal end portion of the medical instrument through the artificial opening, the medical instrument is operated to perform a medical procedure operation inside the patient.
Owner:WILK PATENT
Medical laser irradiation device and medical laser irradiation method
InactiveUS20200268447A1Safe removalSemiconductor laser arrangementsControlling energy of instrumentBlood Vessel EndotheliumMedicine
[Object] There is provided .a medical laser irradiation device and a medical laser irradiation method, both of which are capable removing plaque adhering to the angioendothelium more safely using laser light. [Solution] A medical laser irradiation device according to the present disclosure includes a first laser light source configured to emit a first laser light having a wavelength band that is selectively absorbed by plaque existing inside a blood vessel of a living body; a second laser light source configured to emit a second laser light having a wavelength band that is selectively absorbed by the plaque calcified and existing inside the blood vessel; and an optical fiber configured to coaxially guide the first laser light and the second laser light, and at least a part of which is inserted into the blood vessel.
Owner:SONY CORP
Partial-sealing reverse-flow type blood clot resorption device
InactiveCN105214199AGuaranteed pressureSimple structureBalloon catheterSurgeryThrombolytic drugThrombus
Provided is a partial-sealing reverse-flow type blood clot resorption device. The partial-sealing reverse-flow type blood clot resorption device comprises a balloon, a balloon catheter, a blood clot removing drill bit, a blood supplementing tube and a collecting tube. The blood clot removing drill bit is of a hollow structure and is connected and communicated with the blood supplementing tube. The blood clot removing drill bit and the blood supplementing tube are sleeved with the collecting tube, and the collecting tube, the blood clot removing drill bit and the blood supplementing tube form a collecting tube cavity which is communicated with a blood clot suction outlet. The partial-sealing reverse-flow type blood clot resorption device has following beneficial effects: blood clot scraps can be sucked out of the human body through the collecting tube after blood clots are smashed; meanwhile, blood is supplemented through the blood supplementing tube for blood loss, and therefore the pressure intensity inside the blood vessel is maintained; in addition, thrombolytic drugs can be injected at the same time; and besides, the blood supplementing type blood clot remover is simple in structure and convenient to operate.
Owner:UNIV OF SHANGHAI FOR SCI & TECH
Rotary thrombus phagocytosis removal system
InactiveCN111973250AAvoid destructionSolve the phenomenon of clogged coilExcision instrumentsThrombusEngineering
The invention discloses a rotary thrombus phagocytosis removal system. The rotary thrombus phagocytosis removal system comprises a fixing module, a cleaning module and a positioning module. Through the arrangement of the fixing module, the rotary thrombus phagocytosis removal system can be fixed to a thrombus position at the inner wall of the blood vessel of a patient, so that the problem that thedevice moves due to blood pressure in the working process is solved. Through the arrangement of the cleaning module, the thrombus in the blood vessel is prevented from being damaged through physicalremoval, so that the phenomenon of blood vessel blockage by the thrombus is avoided. Through the arrangement of the positioning module, a user can be enabled to better operate and control the positionof the cleaning module at the inner wall of the blood vessel inside the blood vessel, so that the safety of the rotary thrombus phagocytosis removal system in use is improved.
Owner:王剑
Infarction prevention device and treatment method
An infarction prevention device has a filter to be placed inside a blood vessel. The filter includes a connection portion having a base end to be connected to a placing member configured to place the filter inside the blood vessel, and a cylindrical body portion connected to a front end of the connection portion. At least one of the connection portion and the cylindrical body portion includes a capturing portion configured to capture a foreign substance included in blood inside the blood vessel such that the at least one of the connection portion and the body portion controls a flow of the foreign substance.
Owner:YAMANOUCHI DAI
Experimental device for vascular intima injury in experimental animals
Owner:PEKING UNION MEDICAL COLLEGE HOSPITAL CHINESE ACAD OF MEDICAL SCI
Treatment device for aneurysms preferably of aortic kind
A treatment device (1 ) for aneurysms is provided for, comprising: an endoprosthesis (2) comprising a main channel (2a) and secondary openings (2b) and suitable to be inserted in a main blood vessel (V1) at the point of an aneurysm and of a second blood vessel (V2), a first guide wire (3) suitable to be inserted in the endoprosthesis (2) when inside the blood vessel (V1), through the main channel(2a) and a secondary opening (2b), a second guide wire (4) suitable to be inserted inside the main blood vessel (V1) and the secondary blood vessel (V2), first magnetic means (5, 5a) placed at the first guide wire (3), second magnetic means (5, 5b) placed at the second guide wire (4), the magnetic means (5) being mutually attracted and at least one of the magnetic means (5) being mobile (5, 5c) along its guide wire (3, 4); means of moving (7) said mobile magnetic means (5,5c).
Owner:KARDIA
An intravascular tomography system
ActiveCN104856652BSimple structureEasy to detectDiagnostics using lightCatheterEngineeringTomography
The invention discloses a tomography system inside a blood vessel. The tomography system comprises an imaging catheter, an optical fiber movement controller, a tomography module, a data collecting module and a data processing and displaying module which are connected in sequence. The light emitted by the tomography module is transmitted to the imaging catheter through the optical fiber movement controller, the light is concentrated on a target blood vessel wall through the imaging catheter, and the optical fiber movement controller drives the imaging catheter to conduct rectilinear motion inside a target blood vessel at the same time of rotating at a high speed. The reflected light of different layers of the target blood vessel wall is collected and transmitted to the optical fiber movement controller and the tomography module in sequence by the imaging catheter, the tomography module demodulates the received reflected light into intensity information and then converts the intensity information into electrical signals, the data collecting module collects and transmits the electrical signals to the data processing and displaying module, and the data processing and displaying module processes, generates and displays cross-section image information of the blood vessel. By means of the tomography system inside the blood vessel, the high-speed tomography of the blood vessel can be achieved.
Owner:南京沃福曼医疗科技有限公司
Robot for removing cancer cells
PendingCN109431607AEasy to operateAchieve the purpose of non-renewableSurgical robotsAbnormal tissue growthCancer cell
The invention discloses a robot for removing cancer cells, which comprises a main engine and an operating table; the middle of the front face of an operation main engine is fixed with an operating table; above the front face of the main engine is fixed with a display device; above one side of the main engine is fixed with a robotic arm; a support is fixed on one side of the robotic arm away from the main engine; a needle is fixed on one side of the support far from the robotic arm; a cavity body is formed in the inner part of the support; an electric motor is fixed above the middle side of theinner part of the cavity body. According to the robot for removing cancer cells, the tumor is treated in the early stage, thereby placing a dissecting device near the cancer cells inside the blood vessel by interventional means, avoiding the risk of massive bleeding caused by aortic vascular incision, and greatly reducing the risk of surgery; at the same time, through a 3D vision device, it is convenient for medical personnel to determine the location of the cancer cells; through an ion thinner, the cancer cells are stripped into the internal vacuum ion thinner, so that cancer cells die naturally.
Owner:SHENYANG HENGTIAN ROBOT MFG CO LTD
Cannula for the drainage of blood vessels
The cannula (1) for the drainage of blood vessels comprises: a tubular body (2) provided with a first end (2a) and with a second end (2b), the latter being intended to be inserted inside a blood vessel of a patient, and provided with at least one main channel (3) extending between the ends (2a, 2b), the tubular body (2) being movable between a home configuration and an extended configuration, in which the diameter of said main channel (3) is reduced with respect to the home configuration to allow it to be inserted into a patient's body; elastic means (6) associated with said tubular body (2) and adapted to counteract the displacement from the home configuration to the extended configuration; pressure detection means (7) for detecting the pressure inside the blood vessel which are associated with the tubular body (2); wherein the pressure detection means (7) comprise at least one pressure sensor (8) associated with the tubular body (2) in the proximity of the second end (2b), and wherein the pressure sensor (8) is arranged inside the main channel (3).
Owner:欧赛特有限公司
Emboli capture device
ActiveUS10881495B2Stable deliveryOccupy large spaceHeart valvesBlood vessel filtersEmbolusBiomedical engineering
A filter device includes: a shaft having an intermediate coil wire between a proximal filter wire and a distal filter wire; a proximal filter on the proximal filter wire; and a distal filter on the distal filter wire. The intermediate coil wire is disposed to extend between downstream and upstream blood vessels to pass through a path of placement that leads to another downstream blood vessel. Both the filters have a contracted configuration for being delivered into the blood vessel and an expanded configuration for capturing an embolus inside the blood vessel. The proximal filter is oriented such that an inlet opening, for taking in the embolus, of a proximal filter body in the expanded configuration faces the distal side, and the distal filter is oriented such that an inlet opening, for taking in the embolus, of a distal filter body in the expanded configuration faces the proximal side.
Owner:ACCESS POINT
Cannula for the drainage of blood vessels
A cannula for the drainage of blood vessels having a tubular body provided with a first and second ends, the second end being insertable inside a patient's blood vessel, and provided with at least one main channel extending between the ends, the tubular body being movable between a home configuration and an extended configuration, in which the diameter of said main channel is reduced with respect to the home configuration; an elastic part associated with said tubular body and adapted to counteract the displacement from the home configuration to the extended configuration; pressure detection part for detecting the pressure inside the blood vessel which are associated with the tubular body; wherein the pressure detection part comprise at least one pressure sensor associated with the tubular body in the proximity of the second end, and where the pressure sensor is arranged inside the main channel.
Owner:EUROSETAB
Neurostimulation device for blocking blood flow between electrodes
PendingUS20220347470A1Regulates inflammatory responseInternal electrodesImplantable neurostimulatorsAnatomyEngineering
A neurostimulation device 1 for non-destructively stimulating neural activity in a nerve 3 in proximity to a blood vessel 5. The neurostimulation device 1 comprises a catheter 7 for insertion into the blood vessel 5; a proximal electrode 11 offset from a distal electrode 9 along a length of the catheter 7; and an insulator 13 positioned between the proximal electrode 11 and the distal electrode 9 on the catheter 7. The insulator 13 has a contracted configuration in which the size of the insulator 13 allows the catheter 7 to travel inside the blood vessel 5. The insulator 13 has an expanded configuration in which the insulator 13 blocks blood flowing through the blood vessel between the proximal electrode 11 and the distal electrode 9. The neurostimulation device 1 comprises a stimulator 15 arranged to apply an electrical signal between the proximal electrode 11 and the distal electrode 9 when the insulator 13 is in the expanded configuration, thus inducing electrical activity in a wall portion of the blood vessel between the proximal and distal electrodes 9, 11. There is also an insulation portion between the distal electrode 9 and a distal end of the catheter 7 for offsetting the distal electrode 9 from a wall of the blood vessel 5.
Owner:GALVANI BIOELECTRONICS LTD
A kind of multifunctional nerve block puncture needle
The invention discloses a multifunctional nerve blocking puncture needle which comprises a needle tube and a needle head located at the front end of the needle tube. A support is connected to the tail end of the needle tube. A channel communicated with an inner cavity of the needle tube is formed inside the support. The support is sleeved with an elastic pressing body. A local anesthetic is contained between the elastic pressing body and the outer wall of the support. A hole for guiding the local anesthetic into the channel is formed in the support. During puncture, the local anesthetic is squeezed into the channel by pressing the elastic pressing body through fingers, and the negative pressure effect is formed between the elastic pressing body and the support after the fingers are loosened. If the needle head is punctured into a blood vessel, blood inside the blood vessel flows into the elastic pressing body so that judgment can be performed conveniently by medical workers, injection into the blood vessel is avoided, and therefore safety needed before injection can be ensured. The multifunctional nerve blocking puncture needle can be applied to nerve blocking puncture.
Owner:THE FIRST AFFILIATED HOSPITAL OF GUANGZHOU UNIV OF CHINESE MEDICINE
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