697 results about "Balloon catheter" patented technology

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.

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.

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.

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.

The application provides a perfusion balloon catheter with a one-way valve, comprising: a balloon body part; the balloon body part comprises an inner lumen tube and a plurality of balloons arranged around the outer surface of the inner lumen tube; the distal balloon tube leg of the plurality of balloons is in contact with the tube wall of the inner lumen tube; a one-way valve is arranged between the inner lumen tube and the balloon part of the balloon. Compared with the prior art, the perfusion balloon catheter provided by the application is formed by a plurality of balloon clusters, and after expansion, a hollow cylindrical shape is formed, and a one-way valve is arranged in the cavity, which is used to simulate the leaflets in the heart valve, and the one-way valve is enabled after the balloon is opened, without the need for switching operation, and the structure is stable, and the function of the leaflets can be realized for multiple times; in addition, the design of the cluster balloon can reduce the difficulty of the balloon forming process while meeting the expected function.

A mold for a catheter balloon can comprise a first mold portion, a second mold portion, and a channel formed on the first mold portion. The first mold portion can comprise a first inner surface and a first outer surface. The second mold portion can comprise a second inner surface and a second outer surface, wherein the first mold portion and the second mold portion form a parting line extending in an axial direction of the mold when the first mold portion and the second mold portion are coupled together. The channel can be formed on the first mold portion parallel to and adjacent the parting line, wherein the channel extends in a radial direction from the first inner surface towards the first outer surface. The mold can be configured to form a balloon comprising features that help facilitate the retrieval and removal of the balloon from a patient's vasculature.

This balloon (10) for a balloon catheter has: a wire (17) disposed on the outer surface of a balloon body part (16); and a drug layer (22) provided on both the surface of the wire (17) and the outer surface of the balloon body part (16). In a cross section of the balloon (10), the maximum thickness T1 of the drug layer (22) in a specific region (19) is greater than the maximum thickness T2 of the drug layer (22) on the outer surface of the balloon body part (16) outside the specific region (19), wherein the specific region (19) is surrounded by a specific shape (18) obtained by expanding the cross-sectional outer edge of the wire (17) by a factor of two around the centroid (17C) of the cross-sectional outer edge of the wire (17).

The invention relates to a cavity targeted pulse therapy device, belongs to the technical field of medical instruments, and solves the problems that in the prior art, a shock wave balloon catheter is poor in passing ability, and calcification lesions which cannot be passed by the balloon catheter cannot be effectively treated. The device comprises a catheter partially penetrating into the body of a patient, the catheter comprises a balloon, a shock wave generator and a directional reinforcing component, the shock wave generator and the directional reinforcing component are arranged in the balloon, the shock wave generator is arranged in front of the directional reinforcing component or arranged in the directional reinforcing component, and the directional reinforcing component shrinks along with expansion of the balloon. By arranging the directional reinforcing component, the reverse shock wave generated by the shock wave generator is reflected and then superposed with the forward shock wave energy, so that the energy loss can be reduced, the forward impact force can be remarkably improved, and the treatment effect can be improved.

The utility model provides a shock wave balloon catheter with a backflow device and medical equipment, the shock wave balloon catheter comprises a balloon, a catheter, a fluid pump and a pressure reducing valve, and a shock wave generating part is arranged in the balloon; the balloon is arranged at the far end of the catheter, a pressurizing flow channel and a backflow flow channel are arranged in the catheter, the pressurizing flow channel is used for supplying conductive liquid into the balloon, and the backflow flow channel is used for recycling the conductive liquid from the interior of the balloon; the outlet end of the fluid pump is communicated with the pressurizing flow channel so as to provide conductive liquid with certain pressure for the balloon; the inlet end of the pressure reducing valve is communicated with the backflow channel so as to maintain the pressure of the conductive liquid in the balloon, and the outlet end of the pressure reducing valve is communicated with the inlet end of the fluid pump, so that bubbles formed by separation and electrolysis of the conductive liquid in the percussion process of an electrode in the balloon are discharged out of the balloon in time through the backflow channel. Bubbles are prevented from hindering shock waves from acting on calcification lesions, and the effective performance of the shock waves is improved.

The invention relates to the technical field of medical instruments, and provides a drug delivery balloon system for aortic aneurysm, a drug delivery balloon is a hollow balloon, and a blood flow channel for blood to pass through is arranged in the axial extension direction of the drug delivery balloon; the drug delivery balloon comprises a balloon outer surface and a balloon inner surface, wherein the balloon outer surface is provided with micropores for allowing drugs to pass through; the balloon inner surface and the balloon outer surface are correspondingly arranged to form a balloon main body, and a hollow inner cavity of the balloon main body is a blood flow channel; a filling pipeline communicated with the balloon main body is arranged on the peripheral wall of the balloon catheter, and the filling pipeline is used for conveying liquid medicine and / or a contrast agent into the balloon main body so as to fill the balloon main body. By arranging the filling pipeline at the end part of the drug delivery balloon with a hollow structure, the filling work of the balloon main body can be realized. Therefore, when the drug delivery balloon system is used for treating aortic aneurysm, blood vessels are ensured to be unobstructed, blood flow is not blocked, and balloon drug delivery work is completed at the same time.

The flow-adjustable perfusion balloon catheter comprises a catheter body, a balloon capable of being filled and a catheter base, a push rod channel and a filling channel are arranged in the catheter body, the filling channel is communicated with an inner cavity of the balloon, and a first connector and a second connector are arranged on the catheter base. Micropores are formed in the positions, located at the near end and the far end of the balloon, of the catheter body and are the near-end micropore and the far-end micropore respectively, the near-end micropore and the far-end micropore are communicated through a blood flow channel formed in the catheter body, and a blocking piece capable of blocking the near-end micropore or the far-end micropore is arranged in the blood flow channel. A push rod is arranged in the push rod channel, and the far end of the push rod is connected with the near end of the plugging piece. Compared with the prior art, by arranging the blood flow channel, effective circulation of blood flow can still be achieved after balloon plugging in the operation, complications caused by ischemia or hypertension in the operation are avoided, the perfusion blood flow can be adjusted in time according to different patient conditions, and the success rate of the operation is increased.

An interventional system is used to treat a lesion in a target anatomy. The interventional system includes a balloon catheter and a guidewire. The balloon catheter includes a balloon coupled to a catheter shaft. The catheter shaft includes a guidewire lumen having a lumen diameter. The guidewire includes a coil tip coupled to a guidewire shaft at a proximal joint. A coil diameter of the coil tip at the proximal joint is larger than the lumen diameter of the catheter shaft. The interventional system can be used to access and treat the lesion in the target anatomy. Other embodiments are also described and claimed.

Provided in the present invention is a coronary sinus balloon counterpulsation catheter, comprising a catheter body and a balloon. The catheter body is provided with a first channel and a second channel that extend through the catheter body along the axial direction thereof. The first channel is eccentric to the catheter body. A cross-section of the second channel comprises a first contour line and a second contour line. The first contour line is at least a part of a first circle. The second contour line is at least a part of a second circle. The first contour line is closer to the first channel than the second contour line, and concave sides of the first contour line and the second contour line both face the first channel. The width of the second channel satisfies a predetermined relationship. The balloon is in sealed connection with a distal outer peripheral surface of the catheter body and is in communication with the second channel. The arrangement mode of the first channel and the second channel enables a filling liquid flowing in the second channel to have a relatively low resistance and a relatively high flow rate. In this way, the coronary sinus balloon counterpulsation catheter can use a liquid such as normal saline instead of a gas as a filling medium, thereby avoiding the occurrence of air embolism caused by balloon rupture and improving the safety of use.

Balloon catheters that includes inner and outer elongate shafts, each of which is secured relative to an end of an inflatable member. The inner and outer elongate shafts are secured relative to one another at one more discrete connection locations. The balloon bonding locations are disposed radially inward relative to an outer dimension of the outer elongate shaft.

The utility model relates to the technical field of soaking devices, and discloses a self-cleaning microporous membrane balloon catheter soaking device which comprises a box body, a sealing ring is arranged at the bottom of the box body, a rotating shaft is installed in the sealing ring, a baffle ring is fixedly connected to the outer portion of the lower end of the rotating shaft, and the lower end of the baffle ring is provided with a sealing ring. Limiting grooves are formed in the left side and the right side of the portion, located on the upper side of the baffle ring, of the rotating shaft, a lantern ring is arranged outside the upper end of the rotating shaft, limiting strips are fixedly connected to the left side and the right side of the inner wall of the lantern ring, and the outer walls of the limiting strips are connected to the inner sides of the limiting grooves in an up-down sliding mode. According to the balloon catheter soaking device, balloon catheters can be limited and fixed through the arranged fixing clamps, the multiple balloon catheters can be separated through the arranged containing disc, the situation that the balloon catheters are wound and damaged during soaking is avoided, soaking liquid in the box body can be pumped out through the gathering opening through the arranged conveying pump, and the soaking liquid is injected into the filtering box through the conveying pipe; and the soaking liquid is filtered through the filter plate, so that impurities in the soaking liquid are removed.

This invention discloses a magnetically controlled balloon guidewire for microvascular revascularization and its manufacturing method. The magnetically controlled balloon guidewire for microvascular revascularization includes a magnetically controlled tip, a phase-change balloon, and a guidewire connected in sequence. This magnetically controlled balloon guidewire for microvascular revascularization can precisely navigate and flexibly steer, and the phase-change balloon can accurately navigate to the stenotic lesion site of the microvessel.

The utility model relates to a balloon catheter, belongs to the technical field of medical instruments, and solves the problems that an existing balloon catheter is poor in folding memorability and difficult to restore after pressure relief. A balloon catheter is composed of a tip tube, a balloon, a compression spring, an inner tube, a developing ring, an outer tube, a stress expansion tube and a catheter base. The developing ring is fixed on the inner pipe through bonding or forging and pressing; the compression spring is nested on the inner tube and the developing ring; the stress expansion pipe is a variable-diameter guide pipe and is arranged on the outer pipe in a sleeving mode. According to the balloon catheter, the compression spring is nested on the inner tube of the balloon to provide axial force for the balloon, and under the action of axial tension of the compression spring, the balloon is completely recovered from an expansion state in use to a folding state before use, so that the balloon catheter is easy to fully withdraw.

The present application relates to a kind of nasal balloon catheter and preparation method, the nasal balloon catheter includes expansion body and with expansion body communication injection part;The expansion body includes positioning fixed structure and expansion structure, positioning fixed structure can be supported in the nasal cavity of target object, expansion structure can be converted from shrink configuration to expansion configuration when injection filling medium in injection part;In expansion configuration, the expansion body matches with the internal physiological structure of the nasal cavity of target object;At least one ventilation catheter is provided in the expansion body, the inner cavity of ventilation catheter is ventilation passage, one end of ventilation passage is communicated with external atmosphere, the other end is communicated with nasal cavity internal airway.Compared with prior art, the present application solves the problems of inaccurate reduction, large damage in existing nasal bone fracture treatment, incomplete compression of nasal bleeding, low comfort level caused by nasal postoperative tamponade, poor effect of nasal cavity narrow treatment method, nasal cavity tamponade while unable to drain and clean nasal cavity and the like.

The invention relates to the technical field of medical instruments, and provides a shock wave peripheral balloon catheter which comprises a guide tube, a balloon body and an electrode unit, the balloon body is arranged at the far end of the guide tube, and the electrode unit is arranged at the position, corresponding to the balloon body, of the outer wall of the guide tube. A filling area is arranged between the balloon body and the guide tube, the filling area comprises conduction areas and supporting areas, the conduction areas and the supporting areas are arranged at intervals and form a group, a plurality of groups of electrode units are arranged on the circumference of the guide tube, and a plurality of electrode units are arranged on the periphery of the guide tube. The multiple electrode units are distributed in the axial direction and the circumferential direction of the guide pipe at equal intervals, and the electrode units are arranged corresponding to the conduction area. By means of the technical scheme, the problem that in the prior art, shock waves of a balloon catheter are not uniform is solved.

This invention provides a drug-coated balloon catheter, its preparation method, and its application, relating to the field of medical device technology. The drug-coated balloon catheter includes a balloon catheter and a drug coating disposed on the surface of the balloon catheter; the drug coating includes an active drug and an excipient; the active drug is a flavonoid. The drug-coated balloon catheter utilizes flavonoids, which combine the advantages of low toxicity and high water solubility. While reducing the toxic side effects of the drug coating, it achieves rapid release and efficient absorption of the drug. Furthermore, through a dual mechanism of anti-proliferation and anti-inflammation, it effectively solves the problems of potential toxic side effects, limited transport efficiency, and limited functionality that may exist in existing products at high dose densities.

The invention discloses a balloon catheter suite for interventional radiography, and relates to the technical field of balloon catheters.The balloon catheter suite comprises a main body, a catheter is arranged at one end of the main body, a backflow pipe is arranged in the catheter, a first branch and a second branch are arranged at one end of the backflow pipe, and a balloon mechanism is installed at one end of the catheter; the balloon mechanism comprises a balloon which is an elastic film, and a sealing cover and a control mechanism are arranged on one side of the body. According to the balloon catheter kit for interventional radiography, liquid is utilized to extrude the liquid drainage ball through the micro hole, the rightward sliding speed of the liquid drainage ball is higher than that of the piston, the liquid enters the position between the piston and the base, air is discharged from the liquid drainage hole, the piston slides to the same position as the liquid drainage ball, and the size of the balloon is kept unchanged; the base is pushed leftwards to block the liquid drainage holes, so that the size of the balloon is stabilized, and the effect of accurately controlling the expansion size of the balloon is achieved.

The utility model discloses a driven end holder for medicine coating balloon catheter spraying equipment, which comprises a support, a driven turntable is rotatably connected to the support, and a driving motor for driving the driven turntable to rotate is fixedly connected to one side of the outer side wall of the support. A loading plate is fixedly connected to the side, away from the driving motor, of the outer side wall of the driven rotating disc, a mounting plate is fixedly mounted on the upper surface of the loading plate, a wire winding ring is fixedly connected to the outer side wall of the mounting plate, and U-shaped wire winding storage columns which are annularly and uniformly distributed are rotationally connected to the upper surface of the wire winding ring. Through cooperation of the support, the driven rotating disc, the driving motor, the loading plate, the mounting plate, the wire coiling ring, the U-shaped wire coiling containing column, the clamping assembly and the wire lapping adjusting column, the application range of the device is effectively widened, balloon catheters of different specifications can be rapidly replaced and sprayed, and the overall spraying efficiency of the device is effectively guaranteed.

This medical system comprises: a balloon catheter having an elongate first shaft and a balloon attached to the first shaft, the balloon catheter being for delivering, to the blood vessel wall of a blood vessel, a drug that can be activated by light emitted from a light irradiation body inserted into a lumen extending through the first shaft; an ultrasonic probe having an elongate second shaft and ultrasonic elements attached to the second shaft, the ultrasonic probe being insertable into the lumen and for transmitting ultrasonic waves toward the blood vessel wall from a plurality of positions on the first shaft along the longitudinal direction thereof and receiving reflected waves of the ultrasonic waves using the ultrasonic elements; and a controller that acquires ultrasonic information relating to the reflected waves received by the ultrasonic elements, calculates the vascular stiffness of the blood vessel corresponding to each of the plurality of positions on the basis of the acquired ultrasonic information, and outputs the calculated vascular stiffness in association with each of the plurality of positions.

Balloon catheters for treating a diseased bifurcated blood vessel that includes a catheter hub, a proximal balloon hub, a distal balloon hub, a catheter tip, a catheter shaft comprising a proximal shaft and a distal shaft, and a bifurcated balloon assembly with a first balloon and second balloon that are substantially parallel. A proximal end of the proximal shaft is connected to the catheter hub and a distal end of the proximal shaft is connected to the proximal balloon hub. A proximal end of the distal shaft is connected to the distal balloon hub and a distal end of the distal shaft is connected the catheter tip. A proximal end of the first balloon is connected to the proximal balloon hub, a distal end of the first balloon is connected to the distal balloon hub, and a distal end of the second balloon is connected to the distal balloon hub.