264 results about "Balloon dilations" patented technology

The invention provides a balloon dilatation catheter, and belongs to the technical field of balloon dilatation catheters. The balloon dilatation catheter comprises a catheter body, the far end of the catheter body is provided with a balloon body used for dilating a narrow part, and the near end of the catheter body is provided with an operating handle used for charging and discharging a filling medium into the balloon body. A flow channel allowing blood to penetrate through is formed in the balloon body and / or between the balloon body and the outer side wall of the catheter body in the axial extending direction of the catheter body, in the working process, after the balloon body is filled, a narrow part is treated, and the blood in the narrow part penetrates through the flow channel to continue to be circulated. The balloon is mainly used for solving the technical problems that in the prior art, when a balloon dilates, blood flow is blocked, consequently, far-end blood supply is insufficient, and the drug transfer effect is affected due to insufficient contact time of the balloon and the blood vessel wall.

Methods and apparatuses for insertion and / or pressurization of a balloon catheter for balloon dilation of anatomical passageways in the head of a person such as the Eustachian tube and Sinus passageways. The insertion devices comprise a balloon catheter guiding tube for receiving and guiding the balloon catheter, and a device body rigidly attached to a proximal end of the balloon catheter guiding tube. The pressurization devices comprise a syringe body with a syringe barrel, a proximal thruster guide section, external hand or finger engagement geometries, a plunger with a distal plunger head and a plunger rod, and a thruster having a proximal end with a finger or hand engagement portion.

The invention discloses a real-time monitoring method and device for a cyclopharyngeal muscle catheter balloon dilatation, and the method comprises the steps: constructing a to-be-detected field domain model of the cyclopharyngeal muscle, and carrying out the finite element analysis to solve a potential distribution and sensitive matrix; the method comprises the following steps: injecting multi-frequency sine excitation current into a to-be-measured field domain of the cyclopharynx muscle catheter balloon dilatation, collecting boundary response voltage, performing multi-frequency synchronous demodulation to obtain a voltage amplitude and a phase, and inverting a conductivity change value distribution diagram under various reference frequencies by combining a sensitive matrix; and in combination with the obtained result, performing at least one operation of determining a catheter insertion position and determining a balloon dilatation state so as to obtain a real-time monitoring result of at least one of the catheter insertion position and the balloon dilatation state, and outputting the real-time monitoring result of the at least one of the catheter insertion position and the balloon dilatation state. The invention aims to provide non-invasive, non-radiation, real-time and accurate monitoring for the catheter balloon of the peripharyngeal muscle catheter balloon dilatation, accurately measure the catheter insertion position and the balloon dilatation state, and improve the safety of the peripharyngeal muscle catheter balloon dilatation.

The present invention provides a system and method for treating tight, hard-to-cross calcified lesions in which an angioplasty balloon is used to dilate the lesions and provide shock waves to restore normal blood flow in a patient's artery. An exemplary device includes an elongated tube and a balloon wrapped circumferentially around the tube and sealed to a distal end of the tube. During treatment, the device is advanced into a patient's vasculature and the balloon is inflated with conductive fluid such that the balloon is fixed to walls of the vasculature proximal to the calcified lesion. The balloon includes at least one low-profile emitter positioned near the distal end of the balloon, which may be activated to generate shock waves to break loose calcifications in the lesion. After calcium in the tight lesion has been modified, the balloon can be deflated and advanced further into the lesion to continue treatment.

The invention discloses a perfusion mastoid balloon and a balloon dilatation catheter, and relates to the technical field of medical instruments. The perfusion mastoid balloon comprises a balloon main body, mastoids and a fluid channel, the mastoid process and the balloon main body are integrally formed or separately formed; the fluid channel is formed in the peripheral wall of the balloon body and extends in the length direction of the balloon body to allow liquid to pass through, and the size of the fluid channel in the radial direction of the balloon body is smaller than or equal to the size of the mastoid in the radial direction of the balloon body. The structure of the perfusion mastoid balloon is improved, the expansion time of the perfusion mastoid balloon is effectively prolonged, a narrow area can be better expanded, and meanwhile blood vessel blockage is avoided.

The invention discloses a covered stent and a balloon dilatation covered stent system, and relates to the technical field of medical instruments.The covered stent comprises a stent body connected through a tubular covering film, and the covered stent has a non-load state with the zero compression diameter and a load state which has the compression rate relative to the non-load state and is used for supporting blood vessels to recover blood flow; when the compression ratio of the covered stent is 10%, the numerical range of the radial supporting force of the covered stent is 2.0 N / mm-6. 0N / mm. The balloon dilatation covered stent system comprises an elastic pipe sleeve, a balloon, a mandrel and a covered stent, the covered stent, the elastic pipe sleeve, the balloon and the mandrel are sequentially arranged from outside to inside in a sleeving mode, and the two ends of the balloon are sealed with the mandrel; the near end of the elastic tube sleeve is fixedly connected with the mandrel or the near end of the balloon; and the far end of the elastic tube sleeve movably sleeves the balloon. The covered stent can provide moderate support for blood vessels, and the problems of lumen restenosis and stent collapse after an existing covered stent is implanted can be effectively solved.

The invention provides a matrix type balloon dilatation system, and belongs to the technical field of balloon catheters. The system comprises a catheter, a balloon assembly, a filling medium storage part and a flow control part, the balloon assembly is arranged at the position, close to the far end by a set distance, of the catheter, the balloon assembly is provided with a plurality of rows of balloon units arranged in the axial direction of the catheter, and each balloon unit is provided with a plurality of sub-balloon bodies arranged in the circumferential direction of the catheter; each sub-balloon body is used for independently filling or scaling; the filling medium storage part is communicated with the near end of the catheter and is used for providing a filling medium for each sub-balloon body; the flow control part is communicated with the filling medium storage part and is used for controlling filling or scaling of each sub-balloon body according to the pressure in the balloon assembly; the technical problems that in the prior art, the overall filling shape of a balloon cannot be flexibly adjusted, normal blood vessels are prone to being damaged, and a patient feels uncomfortable obviously are mainly solved.

The invention discloses a mastoid balloon and a balloon dilatation catheter, and relates to the technical field of medical instruments. The mastoid balloon comprises a balloon main body, an expandable body and a plurality of bulges, the expandable body is arranged on the peripheral wall of the balloon main body and extends along the length direction of the balloon main body, and the expandable body is provided with a fluid inlet for introducing fluid and a fluid channel communicated with the fluid inlet, so that the expandable body can expand or contract under the action of the fluid; the protrusions are arranged on the expandable body and distributed at intervals in the length direction of the expandable body. The convex point structure of the mastoid balloon is improved, the height of the convex points can be adjusted, the balloon is effectively prevented from sliding when a stenosis lesion is expanded, and the treatment effect and efficiency are improved.

The invention belongs to the technical field of medical instruments. The invention discloses a drug coating balloon catheter and a preparation method thereof. In one aspect, a drug coated balloon catheter includes a catheter with a balloon; a drug coating at least comprising an inner coating and an outer coating is arranged on the outer wall of the balloon, and the inner coating and the outer coating are provided with drug active ingredients and different carriers respectively; when the balloon is expanded, the inner coating and the outer coating are separated from the balloon through the state change of the temperature-sensitive carrier of the inner coating under the body temperature environment of a patient and the hydration effect, and the outer coating is used for promoting corresponding active pharmaceutical ingredients to be transferred into target tissues through the carrier of the outer coating when the outer coating is separated from the balloon. On the other hand, the invention provides a preparation method of the drug coating balloon catheter. The preparation method has the advantages that the adhesiveness of the drug coating on the balloon can be effectively improved so as to reduce the delivery loss, and the release rate of the drug coating on diseased tissues can be improved so as to improve the drug transfer capacity.

The visual balloon type urethral dilation device comprises a urethral endoscope and a balloon dilator arranged in the urethral endoscope in a penetrating mode, and the urethral endoscope and the balloon dilator are matched with the urethra of the human body. The observation field of view of the urethra endoscope covers the dilation balloon of the balloon dilator, and visual dilation of the dilation balloon is achieved. The balloon dilator is provided with an independently-controlled fixing balloon, the fixing balloon and a balloon-shaped cavity in the urethra endoscope probe form a detachable fixing structure, the balloon dilator can penetrate through a middle shaft of the probe to move axially when fixing is removed, and the guiding function of the probe is achieved. The balloon dilator can be used in a disposable mode, and cross infection is prevented. And the probe is provided with a panoramic camera and a light supplementing lamp which are symmetrical, so that the visualization precision is improved. The urethra dilatation operation accuracy, safety and diagnosis and treatment efficiency are greatly improved from the aspects of high visualization, dilatation precision adjustment and the like.

An expansion controllable support for a balloon dilatation catheter comprises a support middle section, two ends and a fixed end, the two ends of the support middle section are connected with the fixed end respectively, the support middle section is of a telescopic structure, and the two ends of the support middle section are of a chain-shaped structure formed by connecting variable-diameter constraint rings. And the middle section of the bracket is axially connected with the fixed end through restraint rings from large to small in sequence. The two ends of the dilatation controllable stent are composed of the multi-stage variable-diameter restraint rings, the blood vessel damage is minimized while balloon dilatation is guaranteed, it can be guaranteed that the balloon recovers to the structural state before dilatation during pressure relief withdrawing, and the withdrawing performance of a balloon catheter is improved; the axial restraining rod is arranged in a penetrating mode, circumferential rotation or axial displacement of the balloon during expansion can be effectively prevented, and it is guaranteed that the balloon is accurately positioned in a blood vessel; when the balloon expands, the balloon protrusions protrude out of the grids, the pressure in the balloon is concentrated, the high-pressure expansion effect is achieved, stress is even, expansion is safer, and the expansion controllable support can control excessive expansion of the balloon.

The utility model relates to the technical field of pressure pumps, in particular to a balloon dilatation pressure pump, which comprises a sleeve, a pressure gauge arranged at the bottom of the sleeve, a guide hose embedded at the bottom of the pressure gauge and communicated with the inside of the sleeve, a threaded rod arranged in the sleeve, a scale line observation window arranged on the outer wall of the sleeve, and a positioning block sleeved on the outer wall of the sleeve and close to the left end. The threaded column is sleeved with a fixing cap, a push handle is arranged at the left end of the threaded rod, and an air guide pipe is arranged on the left side face of the push handle. According to the balloon dilatation pressure pump, the sleeve with the pressure gauge is arranged, the change condition of internal pressure can be observed in real time, the threaded rod with the push handle is arranged in the sleeve in a sleeved mode, the piston column is matched with the sleeve in an inserted connection mode, the air guide pipe is matched with the threaded rod, and under matching of the control valve, the sealing plug is manually controlled to achieve internal inflation matching; and the threaded rod is in threaded connection with the first screw hole in the fixing cap, so that stable combination, installation and matching are facilitated, quick disassembly and replacement are facilitated, replacement after the threaded rod is damaged is facilitated, and resource waste is reduced.

The utility model relates to the technical field of medical instruments, in particular to a multifunctional biliary tract drainage tube with double-cavity sacculus auxiliary expansion through a PTCD (percutaneous transluminal compact disc) way, which comprises a drainage tube, a sacculus expansion tube group, a water injection tube and a sacculus, the fixing shell set comprises a drainage tube fixing shell and a water injection tube fixing shell arranged on the periphery of the drainage tube fixing shell, the drainage tube fixing shell is connected with the drainage tube, and the water injection tube fixing shell is connected with the water injection tube; the internal and external intercommunication window is communicated with a first area on the drainage tube and a second area, corresponding to each other, on the water injection tube, so that bile outside the water injection tube flows into the drainage tube through the internal and external intercommunication window. The multifunctional biliary tract drainage tube for assisting expansion through the PTCD way double-cavity balloon integrates biliary tract expansion and bile drainage, operation is reduced, and operation cost can be greatly reduced.

According to the puncture assembly for the trigeminal nerve meniscus balloon compression operation under local anesthesia, firstly, an anesthetic needle is designed to be of a detachable structure and can be arranged in a puncture needle in a sliding and sleeving mode, and precise local anesthesia is conducted firstly in the puncture process; then the same puncture channel is used for carrying out subsequent balloon catheter insertion operation; and secondly, the balloon is fixedly arranged at the front end of the balloon catheter and is connected with the balloon dilatation pressure pump, so that moderate compression on the trigeminal nerve meniscus can be realized by accurately controlling the filling degree of the balloon in the operation process. Meanwhile, the pressure pump has a real-time monitoring function on the internal pressure of the balloon, so that an important reference basis is provided for doctors, the safety and effectiveness of surgical operation are ensured, and nerve injury or other negative effects caused by overhigh pressure of the balloon are avoided.

A diametrically adjustable endoprosthesis includes a controlled expansion element extending along at least a portion of a graft and is supported by a stent. The controlled expansion element diametrically constrains and limits expansion of the endoprosthesis. Upon deployment from a smaller, delivery configuration, the endoprosthesis can expand to the initial diameter set by the controlled expansion element. Thereafter, the endoprosthesis can be further diametrically expanded (e.g., using balloon dilation) by mechanically altering the controlled expansion element.

Disclosed is a valve balloon suction catheter, comprising a tip, a balloon, a catheter, and a handle base in sequence from a distal end to a proximal end, the catheter being provided with a fluid passage lumen. The balloon consists of at least four balloon bodies, which are distributed circumferentially around the catheter to form a circular configuration, so as to create a blood flow channel in the center of the balloon, the blood flow channel being arranged in the axial direction of the balloon. A micro axial flow pump is provided in the blood flow channel and is arranged on the catheter, and a guidewire conduit penetrating through the micro axial flow pump is provided in the micro axial flow pump. A distal end of the guidewire conduit passes through the blood flow channel and is fixedly connected to the tip, and a proximal end of the guidewire conduit penetrates through the handle base. A guidewire lumen is provided in the guidewire conduit. The micro axial flow pump is connected to an external impeller drive interface arranged at a proximal end of the handle base. Compared with the prior art, the combination of balloon dilatation and mechanical circulatory assistance establishes a drainage pathway from the left ventricle to the ascending aorta, enabling cardiac blood circulation and improving the safety of the procedure.

The invention discloses a perfusion balloon and a balloon dilatation catheter, and relates to the technical field of medical instruments. The perfusion balloon comprises a fillable body and at least one hollow component, a concave part and a convex part which are connected with each other at least in a full state are formed on the peripheral wall of the fillable body; the at least one hollow assembly is arranged on the peripheral wall of the fillable body and extends in the length direction of the fillable body, and the hollow assembly and the sunken part jointly form a blood flow channel allowing blood to pass through. The structure of the perfusion balloon is improved, a blood flow channel is formed between the periphery of the perfusion balloon and the blood vessel wall, fluid in the blood vessel is allowed to flow when the balloon expands, longer balloon expansion time is allowed, and the risks of ischemia and tissue damage are reduced.

To provide a catheter capable of reducing a risk of closing an unintended blood vessel such as a peripheral blood vessel by leak or dispersion of a high polymer material such as an embolic agent.SOLUTION: A catheter 2 includes: a shaft 3 which is the shaft 3 having one or more expanded lumens 11 for balloon expansion, and a delivery lumen 12 of a high polymer material, and has an opening 4 for communicating the delivery lumen 12 and the outside of the shaft 3; a first balloon 21 which is the first balloon 21 disposed at a distal side from the opening 4, and in which the inside is communicated with one of the one or more expanded lumens 11; and a second balloon 22 which is the second balloon 22 disposed at a proximal side from the opening 4, and in which the inside of the second balloon 22 is communicated with the expanded lumen 11 different from the expanded lumen 11 communicated with the inside of the first balloon 21 of the one or more expanded lumens 11, or the expanded lumen 11 communicated with the inside of the first balloon 21.SELECTED DRAWING: Figure 2

The invention provides a balloon, a balloon dilatation catheter and a stent system, and particularly provides a balloon, a balloon dilatation catheter and a stent system suitable for bifurcated vascular lesion areas. The balloon comprises a balloon body, a far-end body and a near-end body, the far-end body comprises a first cone part, the near-end body comprises a second cone part, and at least the size of the cone angle alpha 1 of the first cone part and the size of the diameter d of the balloon in the expansion state meet the following relational expression: alpha 1 = k1ld + b1; wherein k1 belongs to [11.009, 21.478], b1 belongs to [7.98, 20.8], d is more than or equal to 5 and less than or equal to 16, and d is a positive integer. The balloon dilatation catheter comprises the balloon, a pushing tube and a catheter seat. According to the balloon, the balloon dilatation catheter and the stent system, the structure of the balloon is improved and optimized, and the balloon, the balloon dilatation catheter and the stent system are simple in structure, easy to produce, capable of achieving industrialization, low in cost, easy to operate clinically and capable of accurately releasing and positioning the stent. Therefore, the positioning accuracy of the stent in a bifurcated vascular lesion area and the success rate of an operation are greatly improved.

The invention relates to the technical field of interventional medical instruments, and discloses a photodynamic balloon dilatation catheter and a laser transmitter. The balloon is connected to the periphery of the far end of the catheter, and the balloon has a full state and a folded state; the outer surface of the balloon is suitable for being coated with a photosensitizer; the optical fiber assembly is arranged in the balloon, and the optical fiber assembly comprises an optical fiber and a shading tube arranged outside the optical fiber in a sleeving mode; the shading tube and the optical fiber are driven to slide relatively, so that the length of the optical fiber exposed out of the shading tube is adjusted. The light shielding tube and the optical fiber are driven to slide relatively, so that the light emitting length of the optical fiber in the balloon can be adjusted, and the treatment universality of the photodynamic balloon dilatation catheter is improved.

The utility model discloses a gourd-shaped barium powder liquid sac nasogastric tube for cardia reflux prevention, comprising a nasogastric tube body, the nasogastric tube body comprising a tube cavity section, a balloon section, a stomach tube section and an intestinal tube section connected in sequence; the tube cavity section comprises a cardia reflux liquid sac cavity, a stomach decompression cavity, a stomach decompression balance cavity and an intestinal nutrition cavity arranged at intervals; the balloon section comprises a balloon embedded in the balloon section of the nasogastric tube body, and one end of the cardia reflux liquid sac cavity is connected to the inside of the balloon. The tube cavity section of the nasogastric tube is equipped with a cardia reflux liquid sac cavity, a stomach decompression cavity, a stomach decompression balance cavity and an intestinal nutrition cavity. Medical staff can start balloon expansion through the cardia reflux liquid sac cavity to avoid reflux at the cardia, and can balance the intragastric pressure through the stomach decompression balance cavity when sucking gastric juice. The function of the nasogastric tube is more complete and reasonable than that of the previous one.

The utility model discloses a balloon and an intracranial artery dilatation system. The balloon comprises a balloon body, a plurality of micropores which are formed in the balloon wall of the balloon body and communicated with an inner cavity of the balloon body, and annular protruding parts located on the two sides of the balloon body in the axial direction. After the balloon is expanded, the annular protruding parts make contact with the inner wall of the artery, so that a gap is formed between the balloon wall between the two annular protruding parts and the inner wall of the artery, and medicine flowing out of the micropores enters the gap at first. When the balloon is used, the medicine flowing out of the micropores of the balloon wall of the balloon body enters the gap firstly and does not directly act on the inner wall of the artery, so that the impact of the medicine on the inner wall of the artery can be remarkably reduced, the damage to the artery can be remarkably reduced, and the probability of injury of an inner membrane, aneurysm and acute bleeding can be remarkably reduced.

The utility model relates to the technical field of dilation catheters, and discloses a double-cavity tube of a PTA (pure terephthalic acid) balloon dilation catheter, which comprises a handle component, a double-cavity tube fitting is fixedly connected to the side end of the handle component, a guide seat is fixedly connected to the bottom end of the double-cavity tube fitting, an insertion opening is formed in the bottom end of the guide seat, and a through hole is formed in the insertion opening. According to the utility model, through the cooperative arrangement of the guide seat, the protection assembly, the extension plate and other structures, if a medical worker accidentally touches the pull plate in the process of operating the double-cavity pipe fitting, the spring is driven to be stretched, and the spring is immediately shrunk after being stretched, so that the safety of the double-cavity pipe fitting is ensured, and the safety of the double-cavity pipe fitting is ensured. The protection plate is still in a closed state, so that most of the protection plate is not easy to open due to accidental touch of medical staff, and pollutants are not easy to enter a guide wire cavity.

The utility model discloses a ring pharynx muscle balloon dilatation stimulation training tube which comprises a catheter body, three conveying tube cavities and three air bag bodies are arranged on the catheter body, the conveying tube cavities comprise the first conveying tube cavity, the second conveying tube cavity and the third conveying tube cavity, and the air bag bodies comprise the fixed air bag body, the dilatation air bag body and the annular air bag body. The fixed air bag body is located in front of the expansion air bag body, the annular air bag body is arranged on the surface of the expansion air bag body in a matched and surrounding mode, the far end of the first conveying pipe cavity is communicated with the fixed air bag body, and the near end is connected with an inflation and deflation connector. According to the utility model, not only can the air bag body be used for accurately carrying out expansion training on the cyclopharynx muscle, but also cold water flow can be injected through the annular air bag body to carry out cold stimulation training on the cyclopharynx muscle, so that the stimulation training effect of the treatment tube is improved, and the stimulation expansion training of a patient is facilitated.

The invention relates to an ear catheter for introduction into an auditory tube, comprising a catheter cartridge (2) having at least three lumens, a first lumen as an administration lumen (2a) for drug administration, a second lumen as a dilation lumen (2b) for dilating the balloon (17), and a third lumen as a pressure relief lumen (2c) for relieving pressure in the middle ear region. In order to prevent the outflow of the drug from the administration lumen (2a) and in order to prevent the outflow of the dilation fluid from the dilation lumen (2b), corresponding one-way valves (11, 12) are provided, and a pressure limiter (13) is provided in order to limit the pressure of the balloon.

The application relates to the technical field of medical catheters, in particular to a balloon dilatation catheter convenient for expansion support, which comprises a supporting mechanism and an adjusting mechanism; the supporting mechanism comprises an injection tube, two sections of covering tubes are fixed outside the injection tube, an outer expansion balloon is arranged outside the injection tube, two ends of the outer expansion balloon are respectively installed with the two sections of covering tubes, a plurality of auxiliary supporting members are installed outside the injection tube, a guide wire is fixed at one end of the injection tube, the guide wire is fixed and penetrates through the covering tubes, a main medium hole and a plurality of auxiliary medium holes are arranged on the injection tube, the main medium hole is connected with the inside of the outer expansion balloon, the plurality of auxiliary medium holes are respectively connected with the insides of the plurality of auxiliary supporting members, and a medicine storage member is installed outside the outer expansion balloon. Compared with the prior art, the application can support the thrombus position in a directional manner, the thrombus can be smoothly medicated, and the treatment effect on the thrombus is improved.

The utility model discloses a balloon dilatation catheter which comprises a catheter body, the catheter body comprises a near-end catheter section, a variable-diameter catheter section and a far-end catheter section which are sequentially arranged from the near end to the far end, the outer diameter of the near-end catheter section is larger than that of the far-end catheter section, and the variable-diameter catheter section is connected between the near-end catheter section and the far-end catheter section; the outer diameter of the variable-diameter catheter section is gradually reduced in the direction from the near-end catheter section to the far-end catheter section. The balloon is connected to the far-end catheter section and can expand in the radial direction relative to the far-end catheter section. By means of the design, the variable-diameter catheter section between the near-end catheter section and the far-end catheter section is in a smooth gradual change process, no step exists, and the problems that in the prior art, a catheter is prone to being broken at the step-shaped position, and the step-shaped catheter is prone to causing damage to blood vessels are solved.

The invention relates to a double-layer medicine balloon dilatation catheter which comprises a double-layer balloon, the double-layer balloon comprises an outer-layer balloon and an inner-layer balloon, the outer-layer balloon comprises a flexible medicine balloon, and the inner-layer balloon comprises a pressurizing supporting balloon; the double-layer balloon is connected with an outer tube, the outer tube comprises an inner-layer balloon pressurizing cavity and an outer-layer balloon pressurizing cavity, a buffering cavity is formed between the outer-layer balloon pressurizing cavity and the outer-layer balloon, and a pressurizing assembly is arranged at the near end of the outer tube; the outer-layer balloon comprises a frosted surface located on the outer side surface, and the spraying medicine is attached to and combined with the frosted surface; a shock wave emitter is arranged between the outer-layer balloon and the inner-layer balloon, and the shock wave emitter is arranged at the position, close to the connecting portion of the outer-layer balloon and the inner-layer balloon, of the balloon body and far away from the outer-layer balloon. Precise attachment of the medicine balloon on a diseased region can be achieved, loss of medicine in the conveying process is reduced, and meanwhile the treatment effect of the medicine acting on the diseased region is guaranteed.

The utility model relates to an intracranial laser balloon dilatation catheter, which comprises a catheter, a laser balloon fixed on the catheter and communicated with the catheter, and a catheter seat fixed and communicated with one end, far away from the laser balloon, of the catheter, a positioning claw is arranged on one side, close to the catheter seat, of the laser balloon, and the positioning claw is fixed on the catheter. The positioning claws are in a funnel shape formed by annularly arranging a plurality of positioning wires, and the ends, with the large opening diameter, of the positioning claws face the laser balloon; the utility model has the advantages that when the laser is continuously irradiated, the laser can be ensured to irradiate in the middle and the blood circulation can be ensured.

The invention provides a guide-wire-free integrated balloon catheter system which comprises a balloon dilatation mechanism, a balloon catheter body and a balloon catheter body, the balloon dilatation mechanism comprises a first balloon, a second balloon and a balloon pushing rod, and the first balloon and the balloon pushing rod are arranged in a penetrating mode; the first balloon is used for blocking an aorta I region; the second balloon and the balloon pushing rod are arranged in a penetrating manner; and the second balloon is used for blocking an aorta III region. According to the technical scheme, the hemostasis and plugging effects are improved.