203 results about "Balloon dilations" patented technology

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 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.

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.

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 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.

A method of treating a sinus cavity of a subject includes advancing a distal portion of a light source through a drainage pathway of a sinus cavity and into the sinus cavity and visually observing a transdermal light emitted from the light source. A distal portion of a substantially rigid inner guide member of a balloon dilation catheter is advanced into the drainage pathway, the balloon dilation catheter including a movable shaft including a balloon that is slidably mounted on the substantially rigid inner guide member. The movable shaft and balloon are advanced distally over the substantially rigid inner guide member to place a portion of the balloon in the drainage pathway whereby the balloon is inflated.

The utility model discloses a cutting balloon catheter which comprises a balloon body, the side surface of the balloon body is fixedly connected with a catheter inner tube, the side surface of the catheter inner tube is fixedly connected with a catheter outer tube, the outer surface of the balloon body is fixedly connected with a cutting layer, and the upper surface of the cutting layer is fixedly connected with a cutting blade. The inner side of the balloon body is fixedly connected with an upper liquid medicine cavity and a lower liquid medicine cavity, one end of the upper liquid medicine cavity and one end of the lower liquid medicine cavity are provided with liquid outlet openings, the cutting layer is arranged to be a grid body, uneven expansion of the balloon can be restrained, and the situation that blood vessels are damaged due to local expansion of the balloon is avoided; the length deformation of the balloon during expansion can be effectively inhibited through the cutting blade on the surface of the balloon, the length of the expanded balloon is kept constant, the passing ability of the balloon catheter and the contraction performance of the expanded balloon are improved, the medicine liquid cavity is formed, medicine can better permeate into lesions, and forming and recovery after blood vessels are cut are facilitated.

The invention relates to a guide-wire-free integrated balloon catheter system, which comprises a balloon dilatation mechanism, a balloon catheter and a balloon catheter, 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 manner; the first balloon is used for blocking the aorta I region; the second balloon and the balloon pushing rod are arranged in a penetrating manner; the second balloon is used for blocking the aorta III region; a first outlet and a second outlet are respectively formed in the balloon pushing rod between the first balloon and the second balloon and in the other side of the second balloon, and a blood inlet is further formed in the other side of the first balloon; the blood inlet is communicated with the first outlet and the second outlet through a pipeline and is closed or opened through a valve, and the pipeline is located in the balloon pushing rod. The balloon is used for improving the hemostasis and plugging effects, meanwhile, avascular necrosis of internal organs and limbs below the plugging position can be prevented, the balloon can better play the hemostasis, plugging and other roles, and the hemostasis time is prolonged.

The utility model discloses a balloon dilatation pressure pump for interventional therapy intraoperative nursing, which comprises a balloon dilatation pressure pump main body, the balloon dilatation pressure pump main body is provided with a fixing splint in a matching way, the fixing splint is arranged in a rectangular way, and the front side and the rear side of the fixing splint are respectively provided with an adjusting device and a pipeline fixing device. The fixing clamping plate is additionally arranged on one side of the disposable balloon dilatation pressure pump, and the disposable balloon dilatation pressure pump is fixed through the butt joint rod and the binding belt on the adjusting device, so that the disposable balloon dilatation pressure pump is convenient to assemble and disassemble, use of medical staff under various conditions is met, and the disposable balloon dilatation pressure pump is convenient to use. Meanwhile, the extrusion fixing clamp arranged on the rear side can fix the balloon dilatation pressure pump on a medical pipeline to assist in fixing the position of the balloon dilatation pressure pump.

The utility model is suitable for the technical field of abdominal surgery, and provides an extraperitoneal cavity dilator which comprises an operation end, the bottom of the operation end is in threaded connection with an inflation pipeline, a check valve is installed on the inner wall of the inflation pipeline, and a balloon dilator is arranged at the bottom of the inflation pipeline. The inflation pipeline is of a hollow cylinder structure and comprises a bent section used for bending, a reinforcing layer is arranged at the bottom of the bent section, and the check valve is arranged at the tail end of the reinforcing layer in the same direction. The check valve comprises an air cavity, the air cavity is formed in the middle section of the check valve, an air inlet is formed in one end of the air cavity, an air outlet is formed in the other end of the air cavity, the air inlet is formed in the end close to the bent section, and a check module is installed in the air cavity. According to the device, one-way flowing of gas is ensured through the non-return module, backflow and leakage are avoided, deflation can be achieved through the deflation rod, and operation stability and high adaptability are achieved.

The present invention discloses a shock wave balloon dilation catheter comprising a balloon and a dilation catheter. The balloon includes a blood flow passage on its outer circumference and / or interior, extending axially and penetrating through the outer circumference and / or center. A shock wave generator is arranged within the balloon chamber, where conductive fluid can be introduced. The distal end of the dilation catheter passes through or into the balloon and is sealedly connected to the balloon. A fluid passage in the catheter communicates with the balloon chamber, and the shock wave generator is fixed to the portion of the catheter within the balloon. The dilation catheter is provided with a guide wire lumen. The present invention further discloses a shock wave balloon dilation catheter for tricuspid valve openings, which designed to avoid blood flow blockage and reduce the hemodynamic impact during the procedure, enhancing safety and treatment effectiveness.

The devices and methods described herein are for use with conventional catheters and guidewires. Access can be maintained with the catheter and / or guidewire and the device can be backloaded onto the guidewire and into the catheter to be advanced to a target. The devices can include a tubular shaft having a lumen for receiving a guidewire; at least one aperture for receiving a feature of an implant positioned on the tubular shaft; and a plurality of relief cuts. The outer diameter of the tubular shaft is sized relative to an inner diameter of a catheter for receiving the tubular shaft, such that a sheath is not positionable in a lumen of the catheter when the tubular shaft is in the lumen of the catheter. The tubular shaft can be axially displaced in the lumen of the catheter to advance or retract the implant positioned on the tubular shaft.

The invention discloses a medicine balloon dilatation catheter which comprises a balloon and a support arranged outside the balloon, the support is in a net pipe shape and can dilate and contract along with the balloon, the dilatation diameter of the support is smaller than the dilatation diameter of the balloon during dilatation, and the dilatation catheter further comprises a medicine coating coated on the outer portion of the balloon. The drug coating comprises a plurality of magnetic drug particles; in a contraction state, the medicine particles are positioned between the balloon and the stent; in the expansion state, part of the sacculus swells out of the stent from the meshes of the stent to form a plurality of protruding parts, and the medicine particles are located on the protruding parts respectively. According to the drug balloon dilatation catheter, under the action of an in-vitro magnetic field, free drug particles generated in the dilatation process of the dilatation catheter can migrate to a vascular intima, meanwhile, the magnetic field can also prevent the drug particles squeezed into a blood vessel from being washed by blood to be separated from the blood vessel, and drug loss in the dilatation process can be reduced. And the stent is arranged outside the balloon, so that the medicine loss of the dilating catheter in the conveying process can be reduced.

The invention provides an intelligent integrated balloon catheter system integrating guide wire guiding and blood vessel dilatation, and the intelligent integrated balloon catheter system integrating guide wire guiding and blood vessel dilatation comprises a guide wire guiding mechanism, a blood vessel dilatation mechanism and a balloon dilatation mechanism which are integrally arranged, the balloon dilatation mechanism comprises a balloon and a sheathing canal, the balloon and the sheathing canal are arranged in a penetrating mode, and the balloon comprises a first cavity and a second cavity; a miniature pressure sensor is arranged on the portion, between the balloon and the head end of the sheath tube, of the sheath tube. According to the technical scheme, the balloon solves the problem of early intervention of bleeding in a complex junction region in a pre-hospital and pre-operation waiting stage, and the aim of effectively blocking the bleeding stopping time to be prolonged to more than 90 minutes is achieved.

A prosthetic heart valve delivery system may include a delivery device having a balloon at a distal end thereof, a balloon-expandable prosthetic heart valve configured to be received on the balloon in a crimped condition, and a loader sheath configured to at least partially surround the crimped prosthetic heart valve while the crimped prosthetic heart valve is received on the balloon. The loader sheath may include a tube and a proximal hub. The loader sheath may include a first channel extending in an axial direction along a wall of the tube and a second channel extending parallel to the first channel. The first channel and the second channel may form weakened areas to promote tearing of the tube along the first channel and along the second channel.

A balloon dilation catheter includes a substantially rigid inner guide member and a movable shaft coupled to a balloon that is slidably mounted on the substantially rigid inner guide member. To treat a sinus cavity of a subject using the balloon dilation the substantially rigid inner guide member is advanced into a drainage pathway of the sinus (e.g., frontal recess or maxillary sinus) of the subject via a nasal passageway. The shaft and balloon are advanced in a distal direction over the substantially rigid inner guide member to place the balloon in the drainage pathway. The balloon is inflated to expand or otherwise remodel the drainage pathway.

A cutting balloon catheter with concealed blades is provided. A pressure channel communicated with the balloon is formed by a gap between the outer tube and the inner tube. The cutting assembly includes first support rings sleeved on the outer tube and a blade group, the first support rings are capable of generating radial elastic deformation and sliding freely. The push-pull tube is sleeved on the outer tube, and the protective bag is configured to encapsulate the balloon and the cutting assembly. When the cutting assembly is pushed to the balloon, after the balloon is expanded, the blade group cuts a section of the protective bag opposite to the balloon to expose the blade group. The catheter can pass through the complex and tortuous blood vessels to reach the lesion site, and realize effective cutting while reducing the damage to the blood vessels.

The utility model discloses a self-tearing medicine balloon catheter which comprises a catheter body. A balloon main body is arranged outside the catheter, the balloon main body comprises a filling layer, a rupture layer is arranged outside the filling layer, and a space between the rupture layer and the filling layer serves as a medicine storage cavity; a tearing path is preset on the surface of the rupture layer, and the tearing path is used for enabling the rupture layer to rupture after the filling layer expands, so that the medicine in the medicine storage cavity is released. The medicine storage layer and the tearing layer are designed on the outer surface of the balloon, and the tearing layer can be torn actively in the balloon expansion process, so that medicine is released to the inner wall of a blood vessel, meanwhile, falling of the medicine on the surface in the balloon conveying process can be reduced, and the treatment effect on a target position is improved.

The invention relates to the technical field of medical catheters, and particularly discloses a telescopic microneedle medicine balloon dilatation catheter which comprises a catheter assembly and a balloon body located at the far end of the catheter assembly and further comprises a plurality of microneedle puncture units located outside the balloon body. The microneedle puncture unit comprises a containing sleeve, a microneedle assembly and an elastic driving part, the top end and the bottom end of the containing sleeve are open, a plugging cover is arranged at the top end of the containing sleeve, a puncture seam is formed in the middle of the plugging cover, the microneedle assembly is slidably arranged in the containing sleeve in a sleeved mode, and the elastic driving part is connected to the opening in the bottom end of the containing sleeve. When the balloon body expands and is extruded by the outside, the elastic driving part is extruded to enable the elastic driving part to generate elastic deformation, and then the puncture end of the microneedle assembly is driven to penetrate through the puncture seam and be ejected and punctured out. And the microneedle easily breaks through the hard calcified shell and enters the hard calcified shell, so that the effective establishment of a drug delivery channel is ensured.

The invention discloses a sensor preparation method based on circulating freezing and thawing, relates to the technical field of crack sensor manufacturing, and aims to solve the problem that a conductive crack sensor is manufactured to sense vibration of a spider web by simulating bristle cracks on spider feet. The intensity and the frequency of the vibration are measured according to the principle that the opening and the closing of the crack cause the change of electrical impedance; vibration measurement can be carried out in real time through impedance change caused by crack closure; the problem of vibration measurement in coronary intervention is solved, and the purpose of measuring the vibration characteristic of the blood vessel in the balloon dilatation process is achieved by adopting a modified sensor design.