1128 results about "Balloon catheter" patented technology

The present application provides a discharge controllable shock wave balloon catheter system, which includes a shock wave therapy main unit (1), a balloon (2), a catheter, and a plurality of electrode pairs (6); an end of the catheter is arranged passing through the balloon (2), and an other end of the catheter is connected to the shock wave therapy main unit (1); the plurality of electrode pairs (6) are accommodated in the balloon (2) and mounted on the catheter; the plurality of electrode pairs (6) are arranged to be spaced apart along a length direction of the catheter; each of the plurality of electrode pairs (6) is independently connected to the shock wave therapy main unit (1), and the plurality of electrode pairs (6) are not connected to each other.

Methods of treating a central airway obstruction (CAO), benign airway stenosis, asthma, chronic obstructive pulmonary disease (COPD), or an airway tumor in a human subject, methods of treating chronic rhinosinusitis (CRS) or chronic rhinosinusitis with nasal polyps (CRSwNP) in a human subject, methods of treating a eustachian tube disorder in a human subject, and devices and systems for performing the methods. A method of treating a central airway obstruction (CAO), benign airway stenosis, asthma, chronic obstructive pulmonary disease (COPD), or an airway tumor in a human subject includes inserting a drug-coated balloon catheter into a target site in a trachea, mainstem bronchus, bronchus intermedius, lobar bronchus, segmental bronchus, or sub-segmental bronchus, wherein the balloon is coated with a coating layer including the therapeutic agent and one or more additives. The therapeutic agent includes paclitaxel, sirolimus, or a derivative thereof. The method includes inflating the balloon to dilate the airway and deliver a therapeutic agent to the airway wall. The method includes deflating the balloon. The method also includes withdrawing the balloon catheter from the target site.

Pulsatile balloon catheter systems are provided. Aspects of the systems include: a pulse generator; and a balloon catheter assembly operably connected to the pulse generator. In embodiments, the balloon catheter assembly includes: a proximal connector operably connecting the balloon catheter assembly to the pulse generator and configured to transduce a first pulse energy generated by the pulse generator to a second pulse energy; a distal balloon; and a catheter component, where the catheter component includes a fluidic passage operably positioned between the proximal connector and the distal balloon, which passage is configured to propagate the second pulse energy from the proximal connector along the fluid passage to the distal balloon. Also provided are balloon catheter assemblies and kits that include the same. Also provided are systems and methods for assessing vessel compliance in-vivo. Also provided are systems and methods for determining system state of balloon catheter systems. The systems, assemblies and kits find use in a variety of different applications, including balloon angioplasty applications.

Pulsatile balloon catheter systems are provided. Aspects of the systems include: a pulse generator; and a balloon catheter assembly operably connected to the pulse generator. In embodiments, the balloon catheter assembly includes: a proximal connector operably connecting the balloon catheter assembly to the pulse generator and configured to transduce a first pulse energy generated by the pulse generator to a second pulse energy; a distal balloon; and a catheter component, where the catheter component includes a fluidic passage operably positioned between the proximal connector and the distal balloon, which passage is configured to propagate the second pulse energy from the proximal connector along the fluid passage to the distal balloon. Also provided are balloon catheter assemblies and kits that include the same. Also provided are systems and methods for assessing vessel compliance in-vivo. Also provided are systems and methods for determining system state of balloon catheter systems. The systems, assemblies and kits find use in a variety of different applications, including balloon angioplasty applications.

Systems and methods can involve wedge dissectors attached to strips in turn attached to medical balloons, for forming serrations within vascular wall tissue for angioplasty as well reducing vessel recoil, reducing residual stenosis, and increasing volumetric blood flow post angioplasty. The design, methods of use, intended outcomes, and process to build this type of balloon is described herein.

Systems and methods can involve wedge dissectors attached to strips in turn attached to medical balloons, for forming serrations within vascular wall tissue for angioplasty as well as drug delivery.

Systems and methods can involve manufacturing medical balloons with wedge dissectors for forming serrations within vascular wall tissue for angioplasty, wherein the systems and methods include improved methods of forming the wedge dissectors and attaching the wedge dissectors to the medical balloon as well as a central shaft to increase the cross ability of the catheter to cross lesions. The design, methods of use, intended outcomes, and process to build this type of balloon is described herein.

Various embodiments disclosed relate to polymer-encapsulated drug particles and a drug-releasing coating including the same, as well as drug-coated balloon catheters for treating, preventing, or reducing the recurrence of strictures in body lumens and methods of using the same. A drug-coated balloon catheter for delivering a therapeutic agent to a target site of a body lumen stricture includes an elongated balloon. The balloon catheter includes a coating layer overlying an exterior surface of the balloon. The coating layer includes the polymer-encapsulated drug particles; or a drug-releasing coating including the polymer-encapsulated drug particles; or a therapeutic agent and a first and / or second additive; or a combination thereof.

The invention relates to a mastoid balloon catheter and a processing method thereof. The mastoid balloon catheter is provided with a far end, a near end and an axial direction, the far end and the near end are opposite, and the axial direction extends between the far end and the near end, and the mastoid balloon catheter comprises a pipe fitting and a catheter body, the balloon body is connected to the far end of the pipe fitting, the balloon body comprises a balloon wall arranged on the periphery of the pipe fitting in a surrounding mode, an inner cavity communicated with the fluid channel is defined in the balloon wall, a plurality of protruding parts facing outwards in the radial direction are distributed on the balloon wall, and concave areas are correspondingly formed on the inner sides of the protruding parts; and at least one part of the supporting piece is fixedly filled in the concave area. According to the mastoid balloon catheter, due to the innovative improvement on the structure, it is ensured that the mastoid points are formed, the supporting pieces with the expected strength are firmly fixed to the inner side of the balloon wall of the balloon body, and the safety risk possibly caused by falling of the mastoid points in the prior art is eliminated.

A medical elongated body or a balloon catheter with high flexibility. The medical elongated body including: a catheter shaft that extends in an axial direction; and a distal member that is fused to a distal side of the catheter shaft, in which a crystallinity of each of a distal portion of the catheter shaft and a proximal portion of the distal member is less than 40%.

The invention discloses a vascular embolism thrombus extraction balloon catheter device for venous thrombosis treatment, and relates to the technical field of medical instruments, the vascular embolism thrombus extraction balloon catheter device comprises a first guide hose, an air guide hose is fixedly connected to the outer side of the first guide hose, and a first air bag is fixedly connected to the outer side of the front end of the first guide hose; the front end of the air guide hose is communicated with the first air bag, a second guide hose is slidably connected into the first guide hose, a third guide hose is slidably connected into the second guide hose, a memory metal net is fixedly connected to the front end of the third guide hose, and a fourth guide hose is slidably connected into the third guide hose. The outer side of the connecting pipe is fixedly connected with a second air bag, the outer side of the supporting pipe is fixedly connected with a plurality of metal elastic pieces, the vascular embolism embolism taking balloon catheter device for venous thrombosis treatment is beneficial to treating thrombus at two positions at a time or treating thrombus at the same position for multiple times, and the embolism cleaning effect is improved.

The invention provides a balloon pressure control system and method and a computer readable storage medium. The balloon pressure control system comprises a pressing machine, a balloon, a balloon catheter and a pressure expansion pump. The balloon catheter comprises a medium cavity, an outlet of the medium cavity is located in the balloon, and the pressure expansion pump comprises a microprocessor and a pumping mechanism; the pumping mechanism comprises a liquid storage bag, a peristaltic pump and a first conveying pipe which are sequentially connected, the first conveying pipe is connected with the medium cavity, and a filling medium is stored in the liquid storage bag; the method is executed by a microprocessor and comprises the steps that when the microprocessor receives a pressing signal, a pumping mechanism is controlled to pump a filling medium into a balloon through a first conveying pipe by means of a peristaltic pump according to the initial filling speed and the preset filling time, so that balloon filling is completed; and when the release signal is received, the pumping mechanism is controlled to extract the filling medium in the balloon through the first conveying pipe by the peristaltic pump according to the initial release speed and the preset release time, so that the release of the balloon is completed.

A method of fracturing a previously-implanted prosthetic surgical heart valve may include advancing a non-compliant balloon of a balloon catheter through a patient's vasculature until the balloon is positioned at least partially within the previously-implanted prosthetic surgical heart valve. Inflation media may be advanced through an inflation lumen and into the balloon to inflate the balloon. A pressure within the inflation lumen may be measured during advancing the inflation media. A volume of inflation media advanced through the inflation lumen and into the balloon may be measured. A relationship between the measured pressure and the measured volume of inflation may be monitored, as the inflation media is advanced into the balloon, to identify distinct phases of balloon inflation.

A delivery system and method for delivering a prosthetic heart valve to the aortic valve annulus via a transaortic approach. The system includes a balloon catheter for delivering a balloon-expandable prosthetic heart valve through an introducer from an approach from outside the patient, through a minimally-invasive opening in the chest cavity through an incision in the aorta, and into the aorta and aortic annulus. The balloon catheter includes a flexible, tapered tip just distal of the balloon to facilitate positioning of the prosthetic heart valve in the proper orientation within the aortic annulus. The prosthetic heart valve may be installed over the existing calcified leaflets, and a pre-dilation valvuloplasty procedure may also be utilized.

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 balloon catheter blood pump comprises a pump body, a flow guide cone, a tail sleeve, a five-cavity catheter, a balloon and an impeller rotor assembly, the pump body comprises an inflow cage, a middle section and an outflow cage, the outflow cage end of the pump body is connected with the flow guide cone, the flow guide cone is connected with the tail sleeve, the tail sleeve is connected with the five-cavity catheter, and the five-cavity catheter is connected with the impeller rotor assembly. The two ends of the balloon are fixed to the middle section of the pump body in a sleeved mode, five round holes are formed in the cross section of the five-cavity catheter and include two flushing fluid perfusion holes, a wiring hole, a balloon injection hole and a center hole, the impeller rotor assembly comprises an impeller, an impeller shaft, a bearing and a flexible transmission shaft, and the impeller is installed at the far end of the impeller shaft and arranged in the pump body. A bearing is arranged between the impeller shaft and the inner wall of the flow guide cone, the near end of the impeller shaft is connected with the far end of a flexible transmission shaft, the flexible transmission shaft penetrates through the center hole, a gap a is reserved between the impeller shaft and the flow guide cone in the radial direction, and a gap b communicated with the gap a is reserved between the impeller and the flow guide cone in the axial direction.

To provide a balloon catheter capable of easily improving pushability in inflating a balloon part group, and capable of allowing a part suitable for the size of the valve of the balloon part group to be easily arranged to the valve.SOLUTION: A balloon catheter 100 includes: a balloon part group 1 including a plurality of balloon parts 10 arranged in parallel; a distal side shaft part 2 located more on a distal side than the balloon parts 10; a proximal side shaft part 3 located more on a proximal side than the balloon parts 10; a distal side sleeve part 4 that connects the balloon parts 10 and the distal side shaft part 2; and a proximal side sleeve part 5 that connects the balloon parts 10 and the proximal side shaft part 3. The length of the distal side sleeve part 4 is shorter than the length of the proximal side sleeve part 5.SELECTED DRAWING: Figure 1

The invention provides a balloon pressure sensor system and a blood pressure measuring method, and relates to the technical field of sensors. A flexible printed circuit board is arranged in a target balloon catheter in a penetrating mode, and a silicon piezoresistive pressure sensor is fixed to the first end of the flexible printed circuit board; therefore, the silicon piezoresistive pressure sensor can accurately measure the initial pressure value of the position where the tip of the balloon sleeving the target balloon catheter is located in real time, and the blood pressure state of the position where the balloon is located is accurately judged according to the target pressure value obtained by the microcontroller in a vascular operation. Through the filtering operation of the hardware signal processing module and the microcontroller, the sensor voltage signal representing the initial pressure intensity value is processed and corrected, a more accurate target pressure intensity value is obtained, and the practicability of the silicon piezoresistive pressure sensor is improved. The display screen system is controlled to display the target pressure intensity value, the pressure intensity condition of the position where the tip end of the balloon is located is better presented to a user, and the user can apply the target balloon catheter more efficiently.

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.

A balloon guide catheter system including a balloon guide catheter having a catheter shaft that includes: (i) a main lumen; (ii) an inflation lumen; and (iii) an exhaust lumen. The terminating distal end of the inflation lumen and the terminating distal end of the exhaust lumen being in localized fluid communication with one another underneath the balloon while in a non-inflated state. A balloon is disposed about a distal region of an outer surface of the catheter shaft. The exhaust lumen is configured to purge the residual air in a proximal direction and out from a proximal region of the balloon guide catheter.

The nick balloon catheter comprises a catheter body, a balloon and a catheter seat, the catheter body comprises an inner tube and an outer tube, the outer tube is arranged on the outer side of the inner tube in a sleeving mode, the far end of the outer tube is connected with the near end of the balloon, and the near end of the outer tube is connected with the catheter seat; the far end of the inner tube penetrates out of the far end of the balloon, a first nicking piece and a guide wire are arranged in an inner cavity of the inner tube in a penetrating mode, and the first nicking piece comprises a first developing piece capable of developing under X rays; the inner tube comprises a nicking piece cavity and a guide wire cavity, the nicking piece cavity and the guide wire cavity extend in the length direction of the inner tube in a penetrating mode, the nicking piece cavity and the guide wire cavity are arranged in parallel, and the first nicking piece penetrates out of the far end of the inner tube through the nicking piece cavity. According to the nicking balloon catheter, the first nicking piece is arranged to cut the seriously narrow lesion position, the problem that the balloon cannot reach the seriously narrow lesion position is solved, and the application range of the nicking balloon catheter is wider.

The embodiment of the invention provides a self-adaptive control system and device based on IABP, and relates to the technical field of medical instruments.The system comprises an IABP balloon catheter and a self-adaptive control device.The self-adaptive control device executes the following self-adaptive control method that a first pressure signal representing current time sequence pressure information in a balloon is obtained, acquiring a historical pressure signal representing historical time sequence pressure information of the balloon; calculating a first pressure difference between the historical pressure signal and the first pressure signal; based on the first pressure difference, whether the balloon leaks or not is judged; if it is determined that the balloon leaks, the balloon leakage level is evaluated, control parameters corresponding to the balloon leakage level are determined, and inflation and deflation of the balloon are controlled according to the determined control parameters. By applying the scheme provided by the embodiment of the invention, accurate self-adaptive control is realized.

The invention discloses an intermittent occlusion balloon catheter system for treating heart failure. The system comprises a five-cavity double-balloon catheter, the five-cavity double-balloon catheter comprises a cavity tube body, a first balloon arranged in a pulmonary artery and a second balloon arranged in a superior vena cava, and the first balloon and the second balloon are both fixed to the surface of the cavity tube body; a round head is arranged at the far end of the cavity tube body, and the diameter of the round head is not larger than the outer diameter of the catheter. The near end is connected with the extension tube assembly through an injection molding head; the cavity tube body is provided with five cavity channels which are respectively communicated with the first balloon extension tube, the second balloon extension tube, the thermistor extension tube, the far-end extension tube and the near-end extension tube; the injection pump is driven by the stepping motor, and the controller adjusts the advancing and retreating motion period of the stepping motor, so that the injection pump is controlled to charge and discharge liquid to the second balloon. By intermittently blocking the superior vena cava, the heart filling pressure is reduced, and therefore heart hyperemia and volume overload are prevented.

Provided are a restraint bracket for balloon catheter and a balloon catheter system. The restraint bracket comprises a restraining part and one or more connecting parts. The connecting parts are arranged at axial end parts of the restraining part, and the connecting part comprises a first axial end part and a second axial end part. The first axial end part is further away from the restraining part than the second axial end part; the second axial end part is connected to the restraining part, and the first axial end part of at least one of the connecting parts is a circumferential non-closed structure. The radial size of the first axial end of the connecting part of the restraint bracket can be increased and / or reduced as required to reduce the risk of the first axial end part scratching the outer surface of the balloon during the manufacturing process of the balloon catheter system. Moreover, the first axial end part can well match the size of a tubular part of the balloon catheter, which is beneficial to improving the propelling performance and the safety performance of the balloon catheter system.

Pulsatile balloon catheter systems are provided. Aspects of the systems include: a pulse generator; and a balloon catheter assembly operably connected to the pulse generator. In embodiments, the balloon catheter assembly includes: a proximal connector operably connecting the balloon catheter assembly to the pulse generator and configured to transduce a first pulse energy generated by the pulse generator to a second pulse energy; a distal balloon; and a catheter component, where the catheter component includes a fluidic passage operably positioned between the proximal connector and the distal balloon, which passage is configured to propagate the second pulse energy from the proximal connector along the fluid passage to the distal balloon. Also provided are balloon catheter assemblies and kits that include the same. Also provided are systems and methods for assessing vessel compliance in-vivo. Also provided are systems and methods for determining system state of balloon catheter systems. The systems, assemblies and kits find use in a variety of different applications, including balloon angioplasty applications.

The invention discloses a locking structure balloon catheter system for trigeminal neuralgia and a using method of the locking structure balloon catheter system, and relates to the technical field of balloon catheters. The balloon is allowed to be filled only after the balloon catheter is conveyed to the preset position, so that the situation that the balloon is filled in advance due to misoperation is prevented, and the risk of misoperation is effectively reduced. The system comprises a puncture needle, a balloon catheter and a locking structure, the puncture needle is used for establishing a channel; the balloon catheter comprises a filling catheter, a balloon and a handle Luer connector assembly; the balloon is connected to the far end of the filling catheter, and the two ends of the handle Luer connector assembly are connected with the filling catheter and the injector respectively. The locking structure comprises an elastic sleeve which sleeves the outer wall of the filling guide pipe, and two ends of the elastic sleeve are fixedly connected to the outer wall of the filling guide pipe; when the elastic sleeve is located in the inner cavity of the puncture needle, the elastic sleeve deforms, and a fluid channel filling the catheter is closed; when the elastic sleeve is separated from the puncture needle inner cavity, the elastic sleeve restores to open the fluid channel; the invention further discloses a using method of the balloon catheter system.

The invention provides a sectional type blocking balloon which comprises a balloon catheter, a guide wire catheter, a near-end blocking balloon and a far-end blocking balloon, the near-end blocking balloon and the far-end blocking balloon are sequentially arranged on the balloon catheter, the guide wire catheter is arranged in the balloon catheter in a penetrating mode, and the near-end blocking balloon and the far-end blocking balloon are sequentially arranged on the far-end blocking balloon. A near-end balloon charging and discharging tube and a far-end balloon charging and discharging tube which are used for conveying filling media to the near-end blocking balloon and the far-end blocking balloon respectively are arranged in the balloon catheter, and the portion, between the near-end blocking balloon and the far-end blocking balloon, of the balloon catheter is an exclusive operation area. While the proximal end and the distal end are blocked, a surgical blood vessel repairing operation space is reserved, and the limitation that the proximal end and the distal end of a blood vessel need to be dissociated for blocking in a traditional surgical operation is avoided. The operation efficiency is improved, the workload of medical staff is reduced, and the device is suitable for being widely used and popularized.

A balloon for a balloon catheter including a straight tubular part, a proximal tapered part located proximal to the straight tubular part, a distal tapered part located distal to the straight tubular part, and a drug layer, is provided. The straight tubular part includes a balloon body and a convex strip which protrudes outwards in a radial direction on an outer surface of the balloon body. The drug layer is provided on the outer surface of the straight tubular part including a lateral surface of the convex strip. A crack is formed on a surface of the drug layer extending along a base of the convex strip.

To provide a device for monitoring a blood flow at the time when the blood flow is stopped using an aortic blockage balloon to thereby prevent complete blockage of the blood flow and prevent outbreak of complications. A balloon catheter device comprising: a balloon catheter including a catheter tube and an aortic blockage balloon provided at a distal end portion of the catheter tube; one or more optical fibers housed in the catheter tube; one or more light irradiation devices disposed in the balloon and coupled to the optical fibers and one or more light detection parts that detect backscattered light of radiated light; and one or more light sources that generate light to be radiated, wherein the balloon catheter device radiates, from the aortic blockage balloon into an aorta, light having a wavelength that can be absorbed by a substance present in blood, detects backscattered light from an inside of a blood vessel, and monitors a state of a blood flow between the aortic blockage balloon and a blood vessel wall over time from intensity of the detected light.

The invention relates to the technical field of pipe welding, and discloses a balloon catheter welding machine. Comprising a device base, a balloon part, a catheter part, a balloon clamping mechanism used for clamping and positioning the balloon part, a catheter clamping mechanism used for clamping and positioning the catheter part, a hot air welding mechanism used for welding the balloon part and a connector of the catheter part, and a control cabinet used for controlling all the assemblies to operate. According to the balloon catheter welding machine, the first air cylinder drives the V-shaped mounting base to ascend and descend, the height of the upper clamping piece is changed, then the distance between the lower clamping piece and the upper clamping piece is changed, and balloon parts with different calibers are clamped and positioned according to actual requirements; the second air cylinder drives the upper positioning base to ascend and descend, the distance between the lower positioning base and the upper positioning base is changed, the inner side faces of the lower positioning base and the upper positioning base make contact with the surface of the guide pipe part so that the guide pipe part can be clamped and positioned, and the device is suitable for guide pipe parts with different calibers.